122 results on '"G, Lamas"'
Search Results
2. Nanostructured LnBaCo2O6−𝜹 (Ln = Sm, Gd) with layered structure for intermediate temperature solid oxide fuel cell cathodes
- Author
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Augusto E. Mejía Gómez, Diego G. Lamas, Ana Gabriela Leyva, and Joaquín Sacanell
- Subjects
Physics ,QC1-999 - Abstract
In this work, we present the combination of two characteristics that are beneficial for solid oxide fuel cell (SOFC) cathodic performance in one material. We developed and evaluated for the first time nanostructured layered perovskites of formulae LnBaCo2O6-d with Ln = Sm and Gd (SBCO and GBCO, respectively) as SOFC cathodes, finding promising electrochemical properties in the intermediate temperature range. We obtained those nanostructures by using porous templates to confine the chemical reagents in regions of 200-800 nm. The performance of nanostructured SBCO and GBCO cathodes was analyzed by electrochemical impedance spectroscopy technique under different operating conditions using Gd2O3-doped CeO2 as electrolyte. We found that SBCO cathodes displayed lower area-specific resistance than GBCO ones, because bulk diffusion of oxide ions is enhanced in the former. We also found that cathodes synthesized using smaller template pores exhibited better performance.
- Published
- 2017
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3. Genetic differentiation without mimicry shift in a pair of hybridizing Heliconius species
- Author
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Mxe9rot C, J Mavxe1rez, KK Dasmahapatra, J Mallet, G Lamas M and M Joron
- Published
- 2013
4. Intracanalicular facial nerve metastasis presenting as a benign tumor in the internal auditory canal
- Author
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F Tankere, G Lamas, Roula Hourani, J Chiras, M Auriol, N Martin-Duverneuil, Physiologie et physiopathologie de la motricité chez l'homme, Université Pierre et Marie Curie - Paris 6 (UPMC)-IFR70-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Service de Neuroradiologie [CHU Pitié-Salpêtrière], and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)
- Subjects
medicine.medical_specialty ,MESH: Facial Nerve Diseases ,MESH: Petrous Bone ,Benign tumor ,Metastasis ,Auditory canal ,MESH: Magnetic Resonance Imaging ,03 medical and health sciences ,0302 clinical medicine ,MESH: Diagnosis, Differential ,MESH: Cranial Nerve Neoplasms ,MESH: Skull Neoplasms ,Medicine ,Radiology, Nuclear Medicine and imaging ,Neuroradiology ,MESH: Humans ,MESH: Middle Aged ,[SDV.BA.MVSA]Life Sciences [q-bio]/Animal biology/Veterinary medicine and animal Health ,medicine.diagnostic_test ,business.industry ,MESH: Adenocarcinoma ,Magnetic resonance imaging ,Interventional radiology ,General Medicine ,Anatomy ,medicine.disease ,Facial nerve ,MESH: Male ,MESH: Lung Neoplasms ,030220 oncology & carcinogenesis ,Radiology ,business ,030217 neurology & neurosurgery - Published
- 2004
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5. Estimates of Selection and Gene Flow from Measures of Cline Width and Linkage Disequilibrium in Heliconius Hybrid Zones
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Nicholas H. Barton, H Eeley, G Lamas, J Santisteban, James Mallet, and M Muedas
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Genetics ,Male ,Natural selection ,biology ,Population genetics ,Locus (genetics) ,Cline (biology) ,Investigations ,biology.organism_classification ,Heliconius melpomene ,Linkage Disequilibrium ,Lepidoptera ,Hybrid zone ,Phenotype ,Gene Frequency ,Genes ,Evolutionary biology ,Heliconius ,Animals ,Hybridization, Genetic ,Female ,Selection, Genetic ,Butterflies ,Heliconius erato - Abstract
Hybrid zones can yield estimates of natural selection and gene flow. The width of a cline in gene frequency is approximately proportional to gene flow (sigma) divided by the square root of per-locus selection (square root of s). Gene flow also causes gametic correlations (linkage disequilibria) between genes that differ across hybrid zones. Correlations are stronger when the hybrid zone is narrow, and rise to a maximum roughly equal to s. Thus cline width and gametic correlations combine to give estimates of gene flow and selection. These indirect measures of sigma and s are especially useful because they can be made from collections, and require no field experiments. The method was applied to hybrid zones between color pattern races in a pair of Peruvian Heliconius butterfly species. The species are Müllerian mimics of one another, and both show the same changes in warning color pattern across their respective hybrid zones. The expectations of cline width and gametic correlation were generated using simulations of clines stabilized by strong frequency-dependent selection. In the hybrid zone in Heliconius erato, clines at three major color pattern loci were between 8.5 and 10.2 km wide, and the pairwise gametic correlations peaked at R approximately 0.35. These measures suggest that s approximately 0.23 per locus, and that sigma approximately 2.6 km. In erato, the shapes of the clines agreed with that expected on the basis of dominance. Heliconius melpomene has a nearly coincident hybrid zone. In this species, cline widths at four major color pattern loci varied between 11.7 and 13.4 km. Pairwise gametic correlations peaked near R approximately 1.00 for tightly linked genes, and at R approximately 0.40 for unlinked genes, giving s approximately 0.25 per locus and sigma approximately 3.7 km. In melpomene, cline shapes did not perfectly fit theoretical shapes based on dominance; this deviation might be explained by long-distance migration and/or strong epistasis. Compared with erato, sample sizes in melpomene are lower and the genetics of its color patterns are less well understood. In spite of these problems, selection and gene flow are clearly of the same order of magnitude in the two species. The relatively high per locus selection coefficients agree with "major gene" theories for the evolution of Müllerian mimicry, but the genetic architecture of the color patterns does not. These results show that the genetics and evolution of mimicry are still only sketchily understood.
- Published
- 1990
6. Preparation and ionic transport properties of YDC–YSZ nanocomposites.
- Author
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Martín G. Bellino, Diego G. Lamas, and Noemí E. Walsöe de Reca
- Abstract
The ionic transport properties of dense nanocomposites of yttria-doped ceria (YDC) and yttria-stabilized zirconia (YSZ), in a volume ratio of 1 : 1, have been investigated by electrochemical impedance spectroscopy. These materials were prepared by means of a fast-firing process starting from nanopowders with high specific surface area, avoiding the formation of secondary phases and minimizing the opportunity for grain growth to occur during sintering. An important enhancement of the total ionic conductivity with decreasing crystallite size was observed, as reported in the literature for other nanostructured ionic conductors. This result can be attributed to an almost ideal parallel connection between both nanophases, coupled to an increase of their grain boundary ionic diffusivity. In addition, it was proved that the presence of the YSZ phase significantly improves the mechanical properties of ceria-based nanoceramics. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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7. Sol-gel synthesis of cubic Nb/Ta-doped SrCoO3−δ with mixed nano-micro morphology.
- Author
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V C Fuertes, F M Eroles, A D Menzaque, W J Peláez, and D G Lamas
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- 2019
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8. Influence of particle size and agglomeration in solid oxide fuel cell cathodes using manganite nanoparticles.
- Author
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Hernán Martinelli, Diego G Lamas, Ana G Leyva, and Joaquín Sacanell
- Published
- 2018
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9. Enhanced Ionic Conductivity in Nanostructured, Heavily Doped Ceria CeramicsThe present work was supported by Fundación YPF (Repsol YPF Award 2003) and Agencia Nacional de Promoción Científica y Tecnológica (Argentina, PICT No. 14268). We thank Dr. Patricia Bozzano (CAC, CNEA), Alejandro Fernández (DEICOR, CITEFA), and Rodolfo Kempf (CAC, CNEA) for their assistance during the TEM study, the SEM observations, and the density measurements, respectively. M.G.B. thanks CONICET and Fundación YPF for his PhD fellowship. Supporting Information is available online from Wiley InterScience or from the author.
- Author
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M. G. Bellino, D. G. Lamas, and N. E. Walsöe de Reca
- Published
- 2006
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10. Diagnostic challenges in pediatric Cushing's disease associated with chronic renal failure: a report of three patients.
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Martínez Castillo I, Aziz M, Di Palma I, López L, Chaparro A, González Ramos J, Mansilla C, Lubienecki F, Lamas G, Rugilo CA, Lazzatti JM, Ciaccio M, and Gil S
- Abstract
Objectives: Cushing's disease (CD) in the context of chronic kidney disease (CKD) is very rare. CKD causes physiological hypercortisolism making the diagnosis of CD extremely difficult. To report 3 females with CKD and CD and to outline the principles that may guide the diagnosis of CD in this context., Case Presentation: P1. A 12.3-year-old patient with CKD secondary to steroid-resistant nephrotic syndrome on hemodialysis (HD) and a medical history of aseptic meningitis. She was referred due to the incidental finding of pituitary macroadenoma. P2. A patient with CKD secondary to bilateral renal hypodysplasia in conservative treatment. At age 16.4 years, she had significant weight gain, purple-red stretch marks, galactorrhea, and menstrual irregularities. P3. A 15.3-year-old patient with CKD secondary to steroid resistant nephrotic syndrome in conservative treatment was referred for weight gain, secondary amenorrhea, and hypertension. In all patients, diagnosis of CD was confirmed by clinical and biochemical findings. P1 and P3 underwent transsphenoidal surgery, and in P2, transcranial surgery resection was performed. Histopathological examination revealed a corticotroph adenoma in P1 and P2, and in P3, immunohistochemistry demonstrated ACTH predominance. All patients achieved remission. P1 and P2 developed pituitary deficiencies., Conclusions: To the best of our knowledge, these are the first three reported cases of the diagnostic association of CD and CKD in children. In all cases, CS was clinically suspected and CD was confirmed through complementary exams. Given the current lack of clear diagnostic criteria for CD in CKD patients, a thorough clinical evaluation remains essential for guiding the diagnosis., (© 2024 Walter de Gruyter GmbH, Berlin/Boston.)
- Published
- 2024
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11. Current status of prepectoral breast reconstruction in Argentina.
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Rancati A, Angrigiani C, Lamas G, Rancati A, Berrino V, Barbosa K, Dorr J, and Irigo M
- Abstract
Breast cancer is among the most common cancers diagnosed in women, affecting one in eight women per year. Immediate implant-based breast reconstruction has emerged as the predominant approach for postmastectomy reconstruction, with a growing preference for the direct-to-implant (DTI) method over the traditional tissue expander technique. While conventionally, implants were typically positioned beneath the pectoralis major muscle, recent advancements have paved the way for implant placement above the muscle, in the prepectoral plane. Nipple-sparing mastectomy (NSM) and skin-sparing mastectomy (SSM) techniques can be combined with prepectoral breast reconstruction. The presence of sufficient fatty tissue coverage is considered one of the foremost independent factors influencing the success of immediate breast reconstruction and flap viability. DTI is a safe approach for prepectoral implant-based reconstruction with a number of advantages. However, careful patient selection and judicious assessment of flap perfusion help identify an appropriate subset of patients for prepectoral DTI reconstruction. Proposed breast tissue coverage classification (BTCC) and rigorous perfusion assessment techniques will aid to minimize postoperative complications and reconstruction failure. Based on the obtained range of coverage values (distance between the Cooper's ligaments and the skin) of preoperative digital mammogram evaluation, a three-type BTCC is as follows: Type 1: <1 cm (poor coverage), Type 2: between 1 and 2 cm (medium coverage), Type 3: >2 cm (good coverage). Prepectoral DTI reconstruction provides good results with complication rates similar to those of subpectoral techniques, eliminating breast animation. A meticulous surgical technique is essential to preserve the vascular network that guarantees the survival of the skin flap and nipple-areola complex (NAC). In the good coverage group (Type 3), an immediate DTI reconstruction could be safely performed. Aesthetic complications as rippling can occur if prepectoral implants are placed in Type 1 patients. Preoperative planning for prepectoral placement should not depend on breast volume, but on breast tissue coverage. Flap evaluation based on preoperative imaging measurements may be helpful when planning a conservative mastectomy. Patient selection, preoperative and intraoperative mastectomy flap evaluation, and modifications in implant technology play a critical role in this new and rapidly growing method for implant-based breast reconstruction., Competing Interests: Conflicts of Interest: All authors have completed the ICMJE uniform disclosure form (available at https://gs.amegroups.com/article/view/10.21037/gs-23-291/coif). The series “Hot Topics in Breast Reconstruction World Wide” was commissioned by the editorial office without any funding or sponsorship. The authors have no other conflicts of interest to declare., (2024 Gland Surgery. All rights reserved.)
- Published
- 2024
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12. Systematics of Dynastor Doubleday, [1849] (Lepidoptera: Nymphalidae, Satyrinae, Brassolini).
- Author
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Piovesan M, Casagrande MM, Lamas G, and Mielke OHH
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- Animals, Female, Male, Body Size, Larva anatomy & histology, Larva classification, Larva growth & development, Animal Structures anatomy & histology, Animal Structures growth & development, Organ Size, Phylogeny, Mexico, Ecosystem, Argentina, Animal Distribution, Butterflies classification, Butterflies anatomy & histology
- Abstract
Dynastor Doubleday, [1849] (Lepidoptera: Nymphalidae: Satyrinae: Brassolini) is an exclusively Neotropical genus, occurring from Mexico to Argentina. Adults have crepuscular habits, while the larvae are unique in Brassolini in feeding on bromeliads (Bromeliaceae). Until now, Dynastor contained three species, nine subspecies, and five synonyms (two of them generic synonyms). The present study analyzed information on the immature stages and adult morphology, with molecular and distribution data, to provide a revised taxonomic hypothesis for Dynastor species and subspecies. Analyses of approximately 380 specimens, including all species and subspecies known for the genus, supported the reinstatement of the statuses of three species: Dynastor stygianus Butler, 1872 stat. rest., Dynastor hannibal Oberthür, 1881 stat. rest., and Dynastor strix (Bates, 1864) stat. rest. One subspecies is here treated as a species: Dynastor pharnaces Stichel, 1908 stat. nov. Three new synonyms are proposed: Papilio anaxarete Cramer, 1776 syn. nov., Dynastor darius ictericus Stichel, 1904 syn. nov. and Dynastor darius faenius Fruhstorfer, 1912 syn. nov. of Dynastor darius (Fabricius, 1775). To ensure unambiguous identification of names, two neotypes were designated for: Dynastor napoleon f. maculatus Niepelt, 1922 and Dynastor populus Röber, 1927, and nine lectotypes for: Dynastor napoleon Doubleday, [1849], Papilio darius Fabricius, 1775, Papilio anaxarete, Dynastor mardonius Fruhstorfer, 1911, Dynastor darius faenius, Brassolis macrosiris Westwood, 1851, Dynastor hannibal, Brassolis strix, and Dynastor pharnaces stat. nov. The proposed taxonomic checklist for Dynastor includes seven species, more than double the previous proposals, and eight subjective synonyms (two of them generic synonyms).
- Published
- 2024
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13. Hybrid speciation driven by multilocus introgression of ecological traits.
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Rosser N, Seixas F, Queste LM, Cama B, Mori-Pezo R, Kryvokhyzha D, Nelson M, Waite-Hudson R, Goringe M, Costa M, Elias M, Mendes Eleres de Figueiredo C, Freitas AVL, Joron M, Kozak K, Lamas G, Martins ARP, McMillan WO, Ready J, Rueda-Muñoz N, Salazar C, Salazar P, Schulz S, Shirai LT, Silva-Brandão KL, Mallet J, and Dasmahapatra KK
- Subjects
- Animals, Female, Male, Gene Flow, Genome, Insect genetics, Mating Preference, Animal, Phenotype, Pigmentation genetics, Reproductive Isolation, Selection, Genetic genetics, Species Specificity, Sympatry genetics, Wings, Animal anatomy & histology, Wings, Animal metabolism, Butterflies anatomy & histology, Butterflies classification, Butterflies genetics, Genetic Introgression genetics, Genetic Speciation, Hybridization, Genetic, Quantitative Trait Loci genetics
- Abstract
Hybridization allows adaptations to be shared among lineages and may trigger the evolution of new species
1,2 . However, convincing examples of homoploid hybrid speciation remain rare because it is challenging to demonstrate that hybridization was crucial in generating reproductive isolation3 . Here we combine population genomic analysis with quantitative trait locus mapping of species-specific traits to examine a case of hybrid speciation in Heliconius butterflies. We show that Heliconius elevatus is a hybrid species that is sympatric with both parents and has persisted as an independently evolving lineage for at least 180,000 years. This is despite pervasive and ongoing gene flow with one parent, Heliconius pardalinus, which homogenizes 99% of their genomes. The remaining 1% introgressed from the other parent, Heliconius melpomene, and is scattered widely across the H. elevatus genome in islands of divergence from H. pardalinus. These islands contain multiple traits that are under disruptive selection, including colour pattern, wing shape, host plant preference, sex pheromones and mate choice. Collectively, these traits place H. elevatus on its own adaptive peak and permit coexistence with both parents. Our results show that speciation was driven by introgression of ecological traits, and that speciation with gene flow is possible with a multilocus genetic architecture., (© 2024. The Author(s).)- Published
- 2024
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14. Immunohistochemical expression of TFF1 is a marker of poor prognosis in retinoblastoma.
- Author
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Aschero R, Ganiewich D, Lamas G, Restrepo-Perdomo CA, Ottaviani D, Zugbi S, Camarero S, Néspoli E, Vilanova MC, Perez-Jaume S, Pascual-Pasto G, Sampor C, Grigorovski N, Salas B, Suñol M, Carcaboso AM, Mora J, de Dávila MTG, Doz F, Radvanyi F, Abramson DH, Llera AS, Schaiquevich PS, Lubieniecki F, and Chantada GL
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- Humans, Cohort Studies, Neoplasm Recurrence, Local, Prognosis, Recurrence, Trefoil Factor-1, Retinoblastoma pathology, Retinal Neoplasms pathology
- Abstract
Introduction: The risk of relapse in retinoblastoma is currently determined by the presence of high-risk histopathologic factors in the enucleated eye. However, the probability of developing metastatic disease is heterogeneous among these patients. Evaluating a biological marker to identify high-risk patients could be useful in clinical setting. This study aims to evaluate whether the expression of TFF1, a surrogate for subtype 2 retinoblastoma, is a prognostic marker for relapse and death., Methods: This multicenter cohort study included 273 patients, 48 of whom had extraocular disease. Immunohistochemical staining were performed for CRX, ARR3, TFF1, and Ki67. Tumors were classified as histological subtype 1 (HS1) if they had low or no expression of TFF1 (quick score (QS) ≤ 50) and as histological subtype 2 (HS2) if they expressed TFF1 diffusely (QS > 50). We studied the association between HS classification and outcome., Results: Of 273 patients, 35.9% were classified as HS1, 59.3% as HS2 and 4.8% were not evaluable. In multivariate analysis, patients with HS2 tumors had a higher probability of relapse and death than those with HS1 (p < .0001 and p = .00020, respectively). We identified a higher-risk subgroup among HS2 tumors, presenting non-mutually exclusive expression of ARR3 and TFF1 and had an increased risk of relapse and death compared with tumors that displayed mutually exclusive expression (p = .012 and p = .027, respectively)., Conclusions: Expression of TFF1, especially when it is not-mutually exclusive with ARR3, is an independent significant marker of poor outcome in retinoblastoma., (© 2023 Wiley Periodicals LLC.)
- Published
- 2024
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15. Establishment and Comprehensive Characterization of a Novel Preclinical Platform of Metastatic Retinoblastoma for Therapeutic Developments.
- Author
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Zugbi S, Aschero R, Ganiewich D, Cancela MB, Winter U, Ottaviani D, Sampor C, Dinardi M, Torbidoni AV, Mena M, Balaguer-Lluna L, Lamas G, Sgroi M, Lagomarsino E, Lubieniecki F, Fandiño A, Radvanyi F, Abramson DH, Podhajcer O, Llera AS, Cafferata EG, Chantada G, Carcaboso AM, and Schaiquevich P
- Subjects
- Animals, Humans, Neoplasm Recurrence, Local, Cell Line, Disease Models, Animal, Retinoblastoma drug therapy, Retinoblastoma genetics, Retinal Neoplasms drug therapy, Retinal Neoplasms genetics
- Abstract
Purpose: Although there have been improvements in the management of metastatic retinoblastoma, most patients do not survive, and all patients suffer from multiple short- and long-term treatment toxicities. Reliable and informative models to assist clinicians are needed. Thus we developed and comprehensively characterized a novel preclinical platform of primary cell cultures and xenograft models of metastatic retinoblastoma to provide insights into the molecular biology underlying metastases and to perform drug screening for the identification of hit candidates with the highest potential for clinical translation., Methods: Orbital tumor, bone marrow, cerebrospinal fluid, and lymph node tumor infiltration specimens were obtained from seven patients with metastatic retinoblastoma at diagnosis, disease progression, or relapse. Tumor specimens were engrafted in immunodeficient animals, and primary cell lines were established. Genomic, immunohistochemical/immunocytochemical, and pharmacological analysis were performed., Results: We successfully established five primary cell lines: two derived from leptomeningeal, two from orbital, and one from lymph node tumor dissemination. After the intravitreal or intraventricular inoculation of these cells, we established cell-derived xenograft models. Both primary cell lines and xenografts accurately retained the histological and genomic features of the tumors from which they were derived and faithfully recapitulated the dissemination patterns and pharmacological sensitivity observed in the matched patients., Conclusions: Ours is an innovative and thoroughly characterized preclinical platform of metastatic retinoblastoma developed for the understanding of tumor biology of this highly aggressive tumor and has the potential to identify drug candidates to treat patients who currently lack effective treatment options.
- Published
- 2023
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16. Checklist of Yunnan Papilionidae (Lepidoptera: Papilionoidea) with nomenclatural notes and descriptions of new subspecies.
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Hu SJ, Cotton AM, Lamas G, Duan K, and Zhang X
- Subjects
- Animals, China, Lepidoptera, Butterflies, Leeches
- Abstract
A checklist of the Papilionidae of Yunnan is presented, with nomenclatural and taxonomic changes made. In the nomenclatural section, the junior homonym Papilio bootes nigricans Rothschild, 1895 is replaced by Papilio bootes nigricauda Lamas & Cotton nom. nov., Chilasa (Cadugoides) epycides muhabbet Koak, 2005 is synonymised with Papilio epycides camilla Rousseau-Decelle, 1947 syn. nov., Graphium cloanthus nyghmat Koak & Kemal, 2000 is placed as a junior objective synonym syn. nov. of Graphium cloanthus clymenus (Leech, 1893), and Papilio astorion Westwood, 1842 is shown to have priority over Papilio varuna White, 1842, thus the valid species name is Atrophaneura astorion (Westwood, 1842) comb. nov. In the main checklist, five new subspecies are described: Parnassius cephalus haba Hu & Cotton ssp. nov., Lamproptera curius hsinningae Hu, Zhang & Cotton ssp. nov., Lamproptera curius yangtzeanus Hu & Cotton ssp. nov., Graphium macareus vadimi Cotton & Hu ssp. nov., and Papilio krishna benyongi Hu & Cotton ssp. nov. The First Reviser Principle under the ICZN Code is invoked to solve four taxonomic problems, and 18 names are synonymised with explanations, notably Papilio machaon venchuanus Moonen, 1984 syn. nov., which is synonymised with Papilio machaon schantungensis Eller, 1936. Byasa genestieri (Oberthr, 1918) stat. nov. is separated from Byasa latreillei (Donovan, 1826), and Papilio everesti Riley, 1927 stat. nov. and P. verityi Fruhstorfer, 1907 stat. nov. are separated from Papilio machaon Linnaeus, 1758 as species. Taxa that require further confirmation of their presence in Yunnan and those that do not occur in Yunnan are enumerated.
- Published
- 2023
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17. A global phylogeny of butterflies reveals their evolutionary history, ancestral hosts and biogeographic origins.
- Author
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Kawahara AY, Storer C, Carvalho APS, Plotkin DM, Condamine FL, Braga MP, Ellis EA, St Laurent RA, Li X, Barve V, Cai L, Earl C, Frandsen PB, Owens HL, Valencia-Montoya WA, Aduse-Poku K, Toussaint EFA, Dexter KM, Doleck T, Markee A, Messcher R, Nguyen YL, Badon JAT, Benítez HA, Braby MF, Buenavente PAC, Chan WP, Collins SC, Rabideau Childers RA, Dankowicz E, Eastwood R, Fric ZF, Gott RJ, Hall JPW, Hallwachs W, Hardy NB, Sipe RLH, Heath A, Hinolan JD, Homziak NT, Hsu YF, Inayoshi Y, Itliong MGA, Janzen DH, Kitching IJ, Kunte K, Lamas G, Landis MJ, Larsen EA, Larsen TB, Leong JV, Lukhtanov V, Maier CA, Martinez JI, Martins DJ, Maruyama K, Maunsell SC, Mega NO, Monastyrskii A, Morais ABB, Müller CJ, Naive MAK, Nielsen G, Padrón PS, Peggie D, Romanowski HP, Sáfián S, Saito M, Schröder S, Shirey V, Soltis D, Soltis P, Sourakov A, Talavera G, Vila R, Vlasanek P, Wang H, Warren AD, Willmott KR, Yago M, Jetz W, Jarzyna MA, Breinholt JW, Espeland M, Ries L, Guralnick RP, Pierce NE, and Lohman DJ
- Subjects
- Animals, Biological Evolution, Phylogeny, Butterflies genetics
- Abstract
Butterflies are a diverse and charismatic insect group that are thought to have evolved with plants and dispersed throughout the world in response to key geological events. However, these hypotheses have not been extensively tested because a comprehensive phylogenetic framework and datasets for butterfly larval hosts and global distributions are lacking. We sequenced 391 genes from nearly 2,300 butterfly species, sampled from 90 countries and 28 specimen collections, to reconstruct a new phylogenomic tree of butterflies representing 92% of all genera. Our phylogeny has strong support for nearly all nodes and demonstrates that at least 36 butterfly tribes require reclassification. Divergence time analyses imply an origin ~100 million years ago for butterflies and indicate that all but one family were present before the K/Pg extinction event. We aggregated larval host datasets and global distribution records and found that butterflies are likely to have first fed on Fabaceae and originated in what is now the Americas. Soon after the Cretaceous Thermal Maximum, butterflies crossed Beringia and diversified in the Palaeotropics. Our results also reveal that most butterfly species are specialists that feed on only one larval host plant family. However, generalist butterflies that consume two or more plant families usually feed on closely related plants., (© 2023. The Author(s).)
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- 2023
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18. Correction: Considerations on the Systematics of Neotropical Pierina, with the Description of Two New Species of Phulia Herrich-Schäffer from the Peruvian Andes (Lepidoptera: Pieridae, Pierinae, Pierini).
- Author
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Pyrcz TW, Willmott KR, Lamas G, Boyer P, Florczyk K, Fåhraeus C, Mahecha O, Cerdeña J, Mrozek A, Farfán J, and Zubek A
- Published
- 2023
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19. The Role of Quorum Sensing in the Development of Microcystis aeruginosa Blooms: Gene Expression.
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Lamas-Samanamud G, Montante A 3rd, Mertins A, Phan D, Loures C, Naves F, Reeves T, and Shipley HJ
- Abstract
Microcystis aeruginosa (M. aeruginosa) is the dominant cyanobacterial species causing harmful algal blooms in water bodies worldwide. The blooms release potent toxins and pose severe public health hazards to water bodies, animals, and humans who are in contact with or consume this water. The interaction between M. aeruginosa and heterotrophic bacteria is thought to contribute to the development of the blooms. This study strives to provide a specific answer to whether quorum sensing is also a potential mechanism mediating the interaction of different strains/species and the expression by gene luxS or gene mcyB in M. aeruginosa growth. The luxS gene in M. aeruginosa PCC7806 is associated with quorum sensing and was tested by q-PCR throughout a 30-day growth period. The same was performed for the mcyB gene. Heterotrophic bacteria were collected from local water bodies: Cibolo Creek and Leon Creek in San Antonio, Texas. Results revealed that in algal bloom scenarios, there is a similar concentration of gene luxS that is expressed by the cyanobacteria. Gene mcyB , however, is not directly associated with algal blooms, but it is related to cyanotoxin production. Toxicity levels increased in experiments with multiple algal strains, and the HSL treatment was not effective at reducing microcystin levels.
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- 2023
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20. Lost and Found: Taxonomic Notes on Some Butterflies (Lepidoptera: Papilionoidea) from J.F. Zikán found on F. Dissmann's Collection.
- Author
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Siewert RR, Rosa AHB, Lamas G, and Freitas AVL
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- Animals, Brazil, Butterflies
- Abstract
J. F. Zikán described several new taxa of butterflies from the Neotropical region. The majority of the butterfly types of J. F. Zikán was deposited at the Instituto Oswaldo Cruz, Rio de Janeiro, Brazil (IOC). However, some type series were found to be incomplete. The present paper discusses and illustrate some type specimens of Papilionidae and Nymphalidae from J. F. Zikán found in Dissmann's collection, that now is deposited at Museu de Diversidade Biológica from University of Campinas - UNICAMP, Campinas, São Paulo, Brazil (ZUEC)., (© 2022. Sociedade Entomológica do Brasil.)
- Published
- 2023
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21. Contribution of the Synkinesis Assessment Questionnaire and the Sunnybrook Facial Grading System to the evaluation of synkinesis after peripheral facial palsy: A STROBE observational study.
- Author
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Lannadère E, Picard D, Hervochon R, Tankéré F, Lamas G, and Gatignol P
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- Male, Humans, Female, Retrospective Studies, Surveys and Questionnaires, Patient Reported Outcome Measures, Facial Paralysis, Synkinesis etiology, Synkinesis complications
- Abstract
Objectives: The main aim of the study was to determine whether the perception of synkinesis by patients with peripheral facial palsy (PFP) matched their clinician's severity assessment. Secondary objectives comprised: (1) to determine whether objective measurement of synkinesis matched the patient's perception; and (2) is to identify factors influencing patients' perceptions., Methods: This retrospective study took place from January to May 2020. Forty patients (8 per PFP grade, I-V/VI; 20 women, 20 men) filled out the Synkinesis Assessment Questionnaire (SAQ) and were assessed on the Sunnybrook Facial Grading System (SFGS). Photographs were analyzed on MEEI-Facegram software., Results: Perceived synkinesis (total SAQ) matched objective grades (SFGS) (Z=2.89; P=0.004), especially for smiling (Z=3.84; P<0.001) and lip protrusion (Z=3.79; P<0.001). Synkinesis on lip protrusion was a more sensitive indicator of perceived synkinesis than synkinesis on smiling (Z=2.96; P=0.003). Duration (ρ=0.5137; P<0.001) and grade of PFP (Chi
2 =13.82; P=0.008) heightened the perception of synkinesis., Conclusion: Patient-reported outcome measures (PROMs) such as the SAQ are relevant for clinical evaluation., (Copyright © 2022. Published by Elsevier Masson SAS.)- Published
- 2023
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22. Considerations on the Systematics of Neotropical Pierina, with the Description of Two New Species of Phulia Herrich-Schäffer from the Peruvian Andes (Lepidoptera: Pieridae, Pierinae, Pierini).
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Pyrcz TW, Willmott KR, Lamas G, Boyer P, Florczyk K, Fåhraeus C, Mahecha O, Cerdeña J, Mrozek A, Farfán J, and Zubek A
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- Animals, Ecosystem, Ecuador, Forests, Peru, Butterflies
- Abstract
A comparative analysis of high-Andean Pierina was carried out, including a total of 25 species. Based on morphological evidence, with an emphasis on venation and genitalia and molecular data, using three genetic markers, we confirm the recent subjective synonymy of the generic names Tatochila Butler, 1870, Piercolias, Staudinger, 1894, Hypsochila Ureta, 1955, Infraphulia Field, 1958, Pierphulia Field, 1958, and Theochila Field, 1958 with Phulia Herrich-Schäffer, 1867. Two new species are described, namely Phulia stoddardi Pyrcz & Cerdeña n. sp., from the Andes of Central Peru, which occurs at an unusually high altitude of close to 5000 m a.s.l. in dry puna habitat, and Phulia phantasma Lamas, Willmott & Boyer n. sp., from dry montane forests in northern Peru and southern Ecuador. An overview of high-elevation butterflies is presented, with some discussion on adaptations to this environment., (© 2022. The Author(s).)
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- 2022
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23. Neotype designation for Papilio fulgerator Walch, 1775 (Hesperiidae: Eudaminae).
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Zhang J, Cong Q, Lamas G, and Grishin NV
- Abstract
The discovery that a skipper butterfly Telegonus fulgerator (Walch, 1775), previously placed in the genus Astraptes Hübner, [1819], is a complex of many similar-looking species-level taxa with different COI barcodes, caterpillar foodplants and body patterns, and subtle differences in adult phenotypes raised a question about which species is the original T. fulgerator . To answer this question, being unable to locate its holotype, we designate the neotype of Papilio fulgerator Walch, 1775, a female specimen from Suriname in the Zoological State Collection, Munich, Germany. This neotype will form the foundation for a comprehensive revision of the T. fulgerator complex based on genomic sequencing and analysis augmented with phenotypic considerations.
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- 2022
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24. Taxonomic discoveries enabled by genomic analysis of butterflies.
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Zhang J, Cong Q, Shen J, Song L, Gott RJ, Boyer P, Guppy CS, Kohler S, Lamas G, Opler PA, and Grishin NV
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The comparative genomics of butterflies yields additional insights into their phylogeny and classification that are compiled here. As a result, 3 genera, 5 subgenera, 5 species, and 3 subspecies are proposed as new, i.e., in Hesperiidae: Antina Grishin, gen. n. (type species Antigonus minor O. Mielke, 1980), Pompe Grishin and Lamas, gen. n. (type species Lerema postpuncta Draudt, 1923), and Curva Grishin, gen. n. (type species Moeris hyagnis Godman, 1900); in Lycaenidae: Fussia Grishin, subgen. n. (type species Polyommatus standfussi Grum-Grshimailo, 1891) and Pava Grishin, subgen. n. (type species Thecla panava Westwood, 1852); in Hesperiidae: Monoca Grishin, subgen. n. (type species Tagiades monophthalma Plötz, 1884), Putuma Grishin, subgen. n. (type species Tisias putumayo Constantino and Salazar, 2013), and Rayia Grishin, subgen. n. (type species Mastor perigenes Godman, 1900); Cissia wahala Grishin, sp. n. (Nymphalidae; type locality in Mexico: Oaxaca); in Hesperiidae: Hedone mira Grishin and Lamas, sp. n. (type locality in Peru: Apurímac), Vidius pompeoides Grishin, sp. n. (type locality in Brazil: Amazonas), Parphorus hermieri Grishin, sp. n. (Hesperiidae; type locality in Brazil: Rondônia), and Zenis par Grishin, sp. n. (Hesperiidae; type locality in Peru: Cuzco); in Pieridae: Glutophrissa drusilla noroesta Grishin, ssp. n. (type locality in USA: Texas, Cameron Co.) and Pieris marginalis siblanca Grishin, ssp. n. (type locality in USA: New Mexico, Lincoln Co.), and Argynnis cybele neomexicana Grishin, ssp. n. (Nymphalidae; type locality in USA: New Mexico, Sandoval Co.). Acidalia leto valesinoides-alba Reuss, [1926] and Acidalia nokomis valesinoides-alba Reuss, [1926] are unavailable names. Neotypes are designated for Mylothris margarita Hübner, [1825] (type locality in Brazil) and Papilio coras Cramer, 1775 (type locality becomes USA: Pennsylvania, Montgomery Co., Flourtown). Mylothris margarita Hübner, [1825] becomes a junior objective synonym of Pieris ilaire Godart, 1819, currently a junior subjective synonym of Glutophrissa drusilla (Cramer, 1777). Lectotypes are designated for Hesperia ceramica Plötz, 1886 (type locality in Indonesia: Seram Island), Pamphila trebius Mabille, 1891 (type locality Colombia: Bogota), Methionopsis modestus Godman, 1901 and Papias microsema Godman, 1900 (type locality in Mexico: Tabasco), Hesperia fusca Grote & Robinson, 1867 (type locality in USA: Georgia), Goniloba corusca Herrich-Schäffer, 1869, and Goniloba devanes Herrich-Schäffer, 1869; the type localities of the last two species, together with Pamphila stigma Skinner, 1896 and Carystus (Argon) lota (Hewitson, 1877), are deduced to be in South America. Type locality of Junonia pacoma Grishin, 2020 is in Sinaloa, not Sonora (Mexico). Abdomen is excluded from the holotype of Staphylus ascalon (Staudinger, 1876). Furthermore, a number of taxonomic changes are proposed. Alciphronia Koçak, 1992 is treated as a subgenus, not a synonym of Heodes Dalman, 1816. The following genera are treated as subgenera: Lafron Grishin, 2020 of Lycaena [Fabricius], 1807, Aremfoxia Real, 1971 of Epityches D'Almeida, 1938, Placidina D'Almeida, 1928 of Pagyris Boisduval, 1870, and Methionopsis Godman, 1901 of Mnasinous Godman, 1900. Polites (Polites) coras (Cramer, 1775) is not a nomen dubium but a valid species. The following are species-level taxa (not subspecies or synonyms of taxa given in parenthesis): Lycaena pseudophlaeas (Lucas, 1866) and Lycaena hypophlaeas (Boisduval, 1852) (not Lycaena phlaeas (Linnaeus, 1761), Satyrium dryope (W. H. Edwards, 1870) (not Satyrium sylvinus (Boisduval, 1852)), Apodemia cleis (W. H. Edwards, 1882) (not Apodemia zela (Butler, 1870)), Epityches thyridiana (Haensch, 1909), comb. nov. (not Epityches ferra Haensch, 1909, comb. nov. ), Argynnis bischoffii W. H. Edwards, 1870 (not Argynnis mormonia Boisduval, 1869), Argynnis leto Behr, 1862 (not Argynnis cybele (Fabricius, 1775)), Boloria myrina (Cramer, 1777) (not Boloria selene ([Denis & Schiffermüller], 1775)), Phyciodes jalapeno J. Scott, 1998 (not Phyciodes phaon (W. H. Edwards, 1864)), Phyciodes incognitus Gatrelle, 2004 and Phyciodes diminutor J. Scott, 1998 (not Phyciodes cocyta (Cramer, 1777)), Phyciodes orantain J. Scott, 1998 (not Phyciodes tharos (Drury, 1773)), Phyciodes anasazi J. Scott, 1994 (not Phyciodes batesii (Reakirt, [1866])), Cercyonis silvestris (W. H. Edwards, 1861) (not Cercyonis sthenele (Boisduval, 1852)), Paramacera allyni L. Miller, 1972 and Paramacera rubrosuffusa L. Miller, 1972 (not Paramacera xicaque (Reakirt, [1867])), Cissia cheneyorum (R. Chermock, 1949), Cissia pseudocleophes (L. Miller, 1976), and Cissia anabelae (L. Miller, 1976) (not Cissia rubricata (W. H. Edwards, 1871)), Tarsoctenus gaudialis (Hewitson, 1876) (not Tarsoctenus corytus (Cramer, 1777)), Nisoniades inca (Lindsey, 1925) (not Nisoniades mimas (Cramer, 1775), Xenophanes ruatanensis Godman & Salvin, 1895 (not Xenophanes tryxus (Stoll, 1780)), Lotongus shigeoi Treadaway & Nuyda, 1994, Lotongus balta Evans, 1949, Lotongus zalates (Mabille, 1893), and Lotongus taprobanus (Plötz, 1885) (not Lotongus calathus (Hewitson, 1876)), Oxynthes martius (Mabille, 1889) (not Oxynthes corusca (Herrich-Schäffer, 1869)), Notamblyscirtes durango J. Scott, 2017 (not Notamblyscirtes simius W. H. Edwards, 1881), Hedone praeceps Scudder, 1872, Hedone catilina (Plötz, 1886), and Hedone calla (Evans, 1955) (not Hedone vibex (Geyer, 1832)), Atalopedes huron (W. H. Edwards, 1863) (not Atalopedes campestris (Boisduval, 1852)), Papias microsema Godman, 1900 (not Mnasinous phaeomelas (Hübner, [1829]), comb. nov. ), Papias unicolor (Hayward, 1938) and Papias monus Bell, 1942 (not Papias phainis Godman, 1900), Nastra leuconoides (Lindsey, 1925) (not Nastra leucone (Godman, 1900)), Nastra fusca (Grote & Robinson, 1867) (not Nastra lherminier (Latreille, [1824])), Zenis hemizona (Dyar, 1918) and Zenis janka Evans, 1955 (not Zenis jebus (Plötz, 1882)), Carystus (Argon) argus Möschler, 1879 (not Carystus (Argon) lota Hewitson, 1877), and Lycas devanes (Herrich-Schäffer, 1869) (not Lycas argentea (Hewitson, 1866)). Borbo impar ceramica (Plötz, 1886), comb. nov. is not a synonym of Pelopidas agna larika (Pagenstecher, 1884) but a valid subspecies. Parnassius smintheus behrii W. H. Edwards, 1870 and Cercyonis silvestris incognita J. Emmel, T. Emmel & Mattoon, 2012 are subspecies, not species. The following are junior subjective synonyms: Shijimiaeoides Beuret, 1958 of Glaucopsyche Scudder, 1872, Micropsyche Mattoni, 1981 of Turanana Bethune-Baker, 1916, Cyclyrius Butler, 1897 of Leptotes Scudder, 1876, Mesenopsis Godman & Salvin, 1886 of Xynias Hewitson, 1874, Carystus tetragraphus Mabille, 1891 of Lotongus calathus parthenope (Plötz, 1886), Parnara bipunctata Elwes & J. Edwards, 1897 of Borbo impar ceramica (Plötz, 1886), Hesperia peckius W. Kirby, 1837 of Polites (Polites) coras (Cramer, 1775), and Lerodea neamathla Skinner & R. Williams, 1923 of Nastra fusca (Grote & Robinson, 1867). The following transfers are proposed: of species between genera (i.e., revised genus-species combinations): Nervia niveostriga (Trimen, 1864) (not Kedestes Watson, 1893), Leona lota Evans, 1937 (not Lennia Grishin, 2022), Leona pruna (Evans, 1937) and Leona reali (Berger, 1962) (not Pteroteinon Watson, 1893), Mnasinous phaeomelas (Hübner, [1829]) (not Papias Godman, 1900), Saturnus jaguar (Steinhauser, 2008) (not Parphorus Godman, 1900), Parphorus harpe (Steinhauser, 2008) (not Saturnus Evans, 1955), Parphorus kadeni (Evans, 1955) (not Lento Evans, 1955), and Calpodes chocoensis (Salazar & Constantino, 2013) (not Megaleas Godman, 1901); of subspecies between species (i.e., revised species-subspecies combinations): Melitaea sterope W. H. Edwards, 1870 of Chlosyne palla (Boisduval, 1852) (not Chlosyne acastus (W. H. Edwards, 1874)) and Panoquina ocola distipuncta Johnson & Matusik, 1988 of Panoquina lucas (Fabricius, 1793); and junior subjective synonym transferred between species: Rhinthon zaba Strand, 1921 of Conga chydaea (A. Butler, 1877), not Cynea cynea (Hewitson, 1876), Pamphila stigma Skinner, 1896 of Hedone catilina (Plötz, 1886), not Hedone praeceps Scudder, 1872, and Pamphila ortygia Möschler, 1883 of Panoquina hecebolus (Scudder, 1872), not Panoquina ocola (W. H. Edwards, 1863). Proposed taxonomic changes result in additional revised species-subspecies combinations: Lycaena pseudophlaeas abbottii (Holland, 1892), Satyrium dryope putnami (Hy. Edwards, 1877), Satyrium dryope megapallidum Austin, 1998, Satyrium dryope itys (W. H. Edwards, 1882), Satyrium dryope desertorum (F. Grinnell, 1917), Argynnis bischoffi opis W. H. Edwards, 1874, Argynnis bischoffi washingtonia W. Barnes & McDunnough, 1913, Argynnis bischoffi erinna W. H. Edwards, 1883, Argynnis bischoffi kimimela Marrone, Spomer & J. Scott, 2008, Argynnis bischoffi eurynome W. H. Edwards, 1872, Argynnis bischoffi artonis W. H. Edwards, 1881, Argynnis bischoffi luski W. Barnes & McDunnough, 1913, Argynnis leto letona (dos Passos & Grey, 1945), Argynnis leto pugetensis (F. Chermock & Frechin, 1947), Argynnis leto eileenae (J. Emmel, T. Emmel & Mattoon, 1998), Boloria myrina nebraskensis (W. Holland, 1928), Boloria myrina sabulocollis Kohler, 1977, Boloria myrina tollandensis (W. Barnes & Benjamin, 1925), Boloria myrina albequina (W. Holland, 1928), Boloria myrina atrocostalis (Huard, 1927), Boloria myrina terraenovae (W. Holland, 1928), Phyciodes anasazi apsaalooke J. Scott, 1994, Polites coras surllano J. Scott, 2006, and Curva darienensis (Gaviria, Siewert, Mielke & Casagrande, 2018). Specimen curated as the holotype of Acidalia leto valesinoides-alba Reuss, [1926] is Argynnis leto letona (dos Passos & Grey, 1945) (not A. leto leto Behr, 1862) from USA: Utah, Provo. A synonymic list of available genus-group names for Lycaeninae [Leach], [1815] is given. Unless stated otherwise, all subgenera, species, subspecies and synonyms of mentioned genera and species are transferred with their parent taxa, and others remain as previously classified.
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- 2022
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25. A peculiar new species of Dione (Agraulis) Boisduval & Le Conte (Lepidoptera, Nymphalidae, Heliconiinae) associated with Malesherbia Ruiz & Pavón (Passifloraceae) in xeric western slopes of the Andes.
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Farfán J, Cerdeña J, Vargas HA, Gonçalves GL, Lamas G, and Moreira GRP
- Abstract
Butterflies associated with xerophytic environments of the Andes have been little studied, and they exhibit high levels of endemism. Herein Dione (Agraulis) dodona Lamas & Farfán, sp. nov. (Nymphalidae; Heliconiinae) is described, distributed on the western slopes of the Andes of Peru and northern Chile, between 800 and 3,000 m elevation. Adults of both sexes, and the immature stages, are described and illustrated based on light and scanning electron microscopy. The immature stages are associated with Malesherbiatenuifolia D. Don (Passifloraceae) found in xeric environments, representing a new record of this genus as a host plant for the subfamily Heliconiinae. Conspicuous morphological differences are presented for all stages at the generic level. Based on a phylogenetic analysis of the COI barcode mitochondrial gene fragment, D. (A.) dodona Lamas & Farfán, sp. nov. is distinguished as an independent lineage within the Agraulis clade of Dione , with ca. 5% difference to congeneric species., (Jackie Farfán, José Cerdeña, Héctor A. Vargas, Gislene L. Gonçalves, Gerardo Lamas, Gilson R. P. Moreira.)
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- 2022
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26. LepTraits 1.0 A globally comprehensive dataset of butterfly traits.
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Shirey V, Larsen E, Doherty A, Kim CA, Al-Sulaiman FT, Hinolan JD, Itliong MGA, Naive MAK, Ku M, Belitz M, Jeschke G, Barve V, Lamas G, Kawahara AY, Guralnick R, Pierce NE, Lohman DJ, and Ries L
- Subjects
- Animals, Ecology, Phenotype, Butterflies genetics
- Abstract
Here, we present the largest, global dataset of Lepidopteran traits, focusing initially on butterflies (ca. 12,500 species records). These traits are derived from field guides, taxonomic treatments, and other literature resources. We present traits on wing size, phenology,voltinism, diapause/overwintering stage, hostplant associations, and habitat affinities (canopy, edge, moisture, and disturbance). This dataset will facilitate comparative research on butterfly ecology and evolution and our goal is to inspire future research collaboration and the continued development of this dataset., (© 2022. The Author(s).)
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- 2022
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27. Genomics-based higher classification of the species-rich Hairstreaks (Lepidoptera: Lycaenidae: Eumaeini).
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Robbins RK, Cong Q, Zhang J, Shen J, Busby RC, Faynel C, Duarte M, Martins ARP, Prieto C, Lamas G, and Grishin NV
- Abstract
We propose a higher classification of the lycaenid hairstreak tribe Eumaeini - one of the youngest and most species-rich butterfly tribes - based on autosome, Lepidopteran Z sex chromosome, and mitochondrial protein-coding genes. The subtribe Neolycaenina Korb is a synonym of Callophryidina Tutt, and subtribe Tmolusina Bálint is a synonym of Strephonotina K. Johnson, Austin, Le Crom, & Salazar. Proposed names are Rhammina Prieto & Busby, new subtribe ; Timaetina Busby & Prieto, new subtribe ; Atlidina Martins & Duarte, new subtribe ; Evenina Faynel & Grishin, new subtribe ; Jantheclina Robbins & Faynel, new subtribe ; Paiwarriina Lamas & Robbins, new subtribe ; Cupatheclina Lamas & Grishin, new subtribe ; Parrhasiina Busby & Robbins, new subtribe ; Ipideclina Martins & Grishin, new subtribe ; and Trichonidina Duarte & Faynel, new subtribe . Phylogenetic results from the autosome and Z sex chromosome analyses are similar. Future analyses of datasets with hundreds of terminal taxa may be more practical time-wise by focussing on the smaller number of sex chromosome sequences (2.6% of nuclear protein-coding sequences). The phylogenetic classification and biological summaries for each subtribe suggest that a variety of factors affected Eumaeini diversification. About a dozen kinds of male secondary sexual organs with frequent evolutionary gains and losses occur in Atlidina, Evenina, and Jantheclina (141 species combined). Females have been shown to use these organs to discriminate between conspecific and non-conspecific males, facilitating sympatry among close relatives. Eumaeina, Rhammina, and Timaetina (140 species combined) are overwhelmingly montane with some evidence for a higher incidence of sympatric diversification. Seven Neotropical lineages in five subtribes invaded the temperate parts of the Nearctic Region with a diversification increase in the Callophryidina (262 species). North American Satyrium and Callophrys then invaded the Palearctic at least once each, with a major species-richness increase in Satyrium . The evolution of litter feeding detritivores within Calycopidina (172 species) resulted in an increase in diversification rate compared with its flower-feeding sister lineage. Atlidina, Strephonotina, Parrhasiina, and Strymonina (562 species combined) each contain a mixture of genera that specialize on one or two caterpillar food plant families and genera that are polyphagous. These would be appropriate subtribes to assess how the breadth of caterpillar food plants and the frequency of host shifts affected diversification., Competing Interests: CONFLICT OF INTEREST The authors declare no conflict of interests.
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- 2022
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28. Peripheral facial palsy following COVID-19 vaccination: a practical approach to use the clinical situation as a guide.
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Foirest C, Bihan K, Tankéré F, Junot H, Demeret S, Debs R, Maillart E, Lebrun-Frenay C, Vigouroux A, Caudron M, Canouï E, Lamas G, Weiss N, and Pourcher V
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- Humans, Vaccination adverse effects, Bell Palsy chemically induced, COVID-19 prevention & control, COVID-19 Vaccines adverse effects, Facial Paralysis chemically induced
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- 2022
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29. A New Sensitive Test Using Virtual Reality and Foam to Probe Postural Control in Vestibular Patients: The Unilateral Schwannoma Model.
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Oussou G, Magnani C, Bargiotas I, Lamas G, Tankere F, and Vidal C
- Abstract
Vestibular schwannomas (VS) are benign tumors of the vestibular nerve that may trigger hearing loss, tinnitus, rotatory vertigo, and dizziness in patients. Vestibular and auditory tests can determine the precise degree of impairment of the auditory nerve, and superior and inferior vestibular nerves. However, balance is often poorly quantified in patients with untreated vestibular schwannoma, for whom validated standardized assessments of balance are often lacking. Balance can be quantified with the EquiTest. However, this device was developed a long time ago and is expensive, specific, and not sensitive enough to detect early deficits because it assesses balance principally in the sagittal plane on a firm platform. In this study, we assessed postural performances in a well-defined group of VS patients. We used the Dizziness Handicap Inventory (DHI) and a customized device consisting of a smartphone, a mask delivering a fixed or moving visual scene, and foam rubber. Patients were tested in four successive sessions of 25 s each: eyes open (EO), eyes closed (EC), fixed visual scene (VR0), and visual moving scenes (VR1) delivered by the HTC VIVE mask. Postural oscillations were quantified with sensors from an android smartphone (Galaxy S9) fixed to the back. The results obtained were compared to those obtained with the EquiTest. Vestibulo-ocular deficits were also quantified with the caloric test and vHIT. The function of the utricle and saccule were assessed with ocular and cervical vestibular-evoked myogenic potentials (o-VEMPs and c-VEMPs), respectively. We found that falls and abnormal postural oscillations were frequently detected in the VS patients with the VR/Foam device. We detected no correlation between falls or abnormal postural movements and horizontal canal deficit or age. In conclusion, this new method provides a simpler, quicker, and cheaper method for quantifying balance. It will be very helpful for (1) determining balance deficits in VS patients; (2) optimizing the optimal therapy indications (active follow-up, surgery, or gamma therapy) and follow-up of VS patients before and after treatment; (3) developing new rehabilitation methods based on balance training in extreme conditions with disturbed visual and proprioceptive inputs., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Oussou, Magnani, Bargiotas, Lamas, Tankere and Vidal.)
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- 2022
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30. Ocular and systemic toxicity of high-dose intravitreal topotecan in rabbits: Implications for retinoblastoma treatment.
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Del Sole MJ, Clausse M, Nejamkin P, Cancela B, Del Río M, Lamas G, Lubieniecki F, Francis JH, Abramson DH, Chantada G, and Schaiquevich P
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- Animals, Intravitreal Injections, Rabbits, Topotecan toxicity, Vitreous Body pathology, Retinal Neoplasms drug therapy, Retinal Neoplasms pathology, Retinoblastoma drug therapy, Retinoblastoma pathology
- Abstract
Although many more eyes of children with retinoblastoma are salvaged now compared to just 10 years ago, the control of vitreous seeding remains a challenge. The introduction of intravitreal injection of melphalan has enabled more eyes to be salvaged safely but with definite retinal toxicity. Intensive treatment with high-dose intravitreal topotecan may be a strategy to control tumor burden because of its cell cycle-dependent cytotoxicity and the proven safety in humans. Therefore, we evaluated the ocular and systemic safety of repeated high-dose intravitreal injections of topotecan in rabbits. Systemic and ocular toxicity was assessed in non-tumor-bearing rabbits after four weekly injections of three doses of topotecan (10 μg, 25 μg, and 50 μg) or vehicle alone. Animals were evaluated weekly for general and ophthalmic clinical status. One week after the last injection, vitreous and plasma samples were collected for drug quantification and the enucleated eyes were subjected to histological assessment. Weight, hair loss, or changes in hematologic values were absent during the study period across all animal groups. Eyes injected with all topotecan doses or vehicle showed no signs of anterior segment inflammation, clinical or histologic evidence of damage to the retina, and ERG parameters remained unaltered throughout the study. Vitreous and plasma topotecan lactone concentrations were undetectable. Four weekly intravitreal injections of topotecan up to 50 μg in the animal model or a 100 μg human equivalent dose were not toxic for the rabbit eye. High doses of topotecan may show promising translation to the clinic for the management of difficult-to-treat retinoblastoma vitreous seeds., (Copyright © 2022. Published by Elsevier Ltd.)
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- 2022
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31. Tractional retinal detachment and juxtapapillary retinal capillary hemangioma in a 6-year-old girl: A case report.
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Benvenuto F, Sgroi M, Lamas G, Gonzalez LD, and Fandiño A
- Abstract
A 6-year-old girl with visual impairment in the right eye (OD) was referred for an eye evaluation. The fundus of the OD showed a fibrotic orange endophytic lesion located adjacent to the optic disc. In retinal optical coherence tomography, a local tractional retinal detachment and choroidal neovascular membrane were observed together also with the presence of subretinal fluid. Due to the vision of the OD evolved to nonlight perception in the following exam, enucleation was performed. The pathology report was correlated with hemangioblastoma. Herein, we describe a case of a young girl with a retinal hemangioblastoma with quick evolution and without prior systemic diagnosis., Competing Interests: There are no conflicts of interest., (Copyright: © 2022 Oman Ophthalmic Society.)
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- 2022
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32. Outcomes and prognostic factors of facial nerve repair: a retrospective comparative study of 31 patients and literature review.
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Carré F, Hervochon R, Lahlou G, Lastennet D, Gatignol P, Bernardeschi D, Lamas G, and Tankéré F
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- Cohort Studies, Humans, Prognosis, Retrospective Studies, Treatment Outcome, Facial Nerve surgery, Facial Paralysis diagnosis, Facial Paralysis etiology
- Abstract
Purpose: To evaluate functional results of facial nerve repair by direct nerve suture or grafting, compare results between a traumatic and a tumoral group and identify prognostic factors., Methods: A retrospective monocentric cohort study was studied in a university ENT department. Thirty-one patients who benefited from facial nerve suture or grafting, with at least 12 months postoperative follow-up were included. Patients were divided into two groups according to the lesion type: traumatic (accident of the public road or iatrogenic) and tumoral. Preoperative data studied were sex, side, etiology documented by CT and/or MRI, facial palsy duration and grade according to House Brackmann grading system. Intraoperative data included: surgeon, age of patient, surgical technique, graft type, use of biological glue, facial nerve derivation, lesioned site. Postoperative data included: histological diagnosis, radiotherapy history, time to onset of the first signs of reinnervation, follow-up duration, and final facial function., Results: Success rate, including grade III and IV, was 68% in the whole cohort, 79% in the traumatic group and 59% in the tumoral group. Patients presenting with facial palsy evolving less than 6 months had better recovery results than those evolving longer than 6 months (p = 0.02). No other prognostic factors were identified., Conclusions: The best outcome that can be achieved by suture or grafting of the facial nerve in traumatic or tumoral lesions is a grade III. Preoperative facial palsy duration is a prognostic factor and must be considered when establishing an operative indication., (© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2022
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33. Is preoperative bone conduction shape a prognostic factor in otosclerosis surgery?
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Hervochon R, Vauterin A, Lahlou G, Nguyen Y, Lamas G, and Tankéré F
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- Adult, Female, Humans, Male, Middle Aged, Prognosis, Auditory Threshold, Bone Conduction, Otosclerosis surgery
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- 2022
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34. Conserved ancestral tropical niche but different continental histories explain the latitudinal diversity gradient in brush-footed butterflies.
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Chazot N, Condamine FL, Dudas G, Peña C, Kodandaramaiah U, Matos-Maraví P, Aduse-Poku K, Elias M, Warren AD, Lohman DJ, Penz CM, DeVries P, Fric ZF, Nylin S, Müller C, Kawahara AY, Silva-Brandão KL, Lamas G, Kleckova I, Zubek A, Ortiz-Acevedo E, Vila R, Vane-Wright RI, Mullen SP, Jiggins CD, Wheat CW, Freitas AVL, and Wahlberg N
- Subjects
- Animals, Extinction, Biological, Genes, Insect, Genetic Speciation, Geography, Phylogeny, Spatio-Temporal Analysis, Animal Distribution, Biodiversity, Butterflies physiology, Tropical Climate
- Abstract
The global increase in species richness toward the tropics across continents and taxonomic groups, referred to as the latitudinal diversity gradient, stimulated the formulation of many hypotheses to explain the underlying mechanisms of this pattern. We evaluate several of these hypotheses to explain spatial diversity patterns in a butterfly family, the Nymphalidae, by assessing the contributions of speciation, extinction, and dispersal, and also the extent to which these processes differ among regions at the same latitude. We generate a time-calibrated phylogeny containing 2,866 nymphalid species (~45% of extant diversity). Neither speciation nor extinction rate variations consistently explain the latitudinal diversity gradient among regions because temporal diversification dynamics differ greatly across longitude. The Neotropical diversity results from low extinction rates, not high speciation rates, and biotic interchanges with other regions are rare. Southeast Asia is also characterized by a low speciation rate but, unlike the Neotropics, is the main source of dispersal events through time. Our results suggest that global climate change throughout the Cenozoic, combined with tropical niche conservatism, played a major role in generating the modern latitudinal diversity gradient of nymphalid butterflies., (© 2021. The Author(s).)
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- 2021
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35. A high-risk retinoblastoma subtype with stemness features, dedifferentiated cone states and neuronal/ganglion cell gene expression.
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Liu J, Ottaviani D, Sefta M, Desbrousses C, Chapeaublanc E, Aschero R, Sirab N, Lubieniecki F, Lamas G, Tonon L, Dehainault C, Hua C, Fréneaux P, Reichman S, Karboul N, Biton A, Mirabal-Ortega L, Larcher M, Brulard C, Arrufat S, Nicolas A, Elarouci N, Popova T, Némati F, Decaudin D, Gentien D, Baulande S, Mariani O, Dufour F, Guibert S, Vallot C, Rouic LL, Matet A, Desjardins L, Pascual-Pasto G, Suñol M, Catala-Mora J, Llano GC, Couturier J, Barillot E, Schaiquevich P, Gauthier-Villars M, Stoppa-Lyonnet D, Golmard L, Houdayer C, Brisse H, Bernard-Pierrot I, Letouzé E, Viari A, Saule S, Sastre-Garau X, Doz F, Carcaboso AM, Cassoux N, Pouponnot C, Goureau O, Chantada G, de Reyniès A, Aerts I, and Radvanyi F
- Subjects
- Biomarkers, Tumor genetics, Biomarkers, Tumor metabolism, Cell Dedifferentiation genetics, Child, Preschool, DNA Methylation, Female, Gene Expression, Genetic Heterogeneity, Humans, Infant, Male, Mutation, N-Myc Proto-Oncogene Protein genetics, Neoplasm Metastasis, Retinal Cone Photoreceptor Cells metabolism, Retinal Ganglion Cells pathology, Retinal Neoplasms genetics, Retinal Neoplasms metabolism, Retinal Neoplasms pathology, Retinoblastoma genetics, Retinoblastoma metabolism, Retinoblastoma pathology, Retinal Cone Photoreceptor Cells pathology, Retinal Ganglion Cells metabolism, Retinal Neoplasms classification, Retinoblastoma classification
- Abstract
Retinoblastoma is the most frequent intraocular malignancy in children, originating from a maturing cone precursor in the developing retina. Little is known on the molecular basis underlying the biological and clinical behavior of this cancer. Here, using multi-omics data, we demonstrate the existence of two retinoblastoma subtypes. Subtype 1, of earlier onset, includes most of the heritable forms. It harbors few genetic alterations other than the initiating RB1 inactivation and corresponds to differentiated tumors expressing mature cone markers. By contrast, subtype 2 tumors harbor frequent recurrent genetic alterations including MYCN-amplification. They express markers of less differentiated cone together with neuronal/ganglion cell markers with marked inter- and intra-tumor heterogeneity. The cone dedifferentiation in subtype 2 is associated with stemness features including low immune and interferon response, E2F and MYC/MYCN activation and a higher propensity for metastasis. The recognition of these two subtypes, one maintaining a cone-differentiated state, and the other, more aggressive, associated with cone dedifferentiation and expression of neuronal markers, opens up important biological and clinical perspectives for retinoblastomas., (© 2021. The Author(s).)
- Published
- 2021
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36. The identity of Hesperia curtius Fabricius, 1793 and its synonymization with Nisoniades mimas (Cramer, 1775) (Lepidoptera: Hesperiidae: Pyrginae).
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Siewert RR, Lemes JRA, Lamas G, Casagrande MM, and Mielke OHH
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- Animal Distribution, Animals, Butterflies, Lepidoptera
- Published
- 2021
- Full Text
- View/download PDF
37. Evolutionary trade-offs between male secondary sexual traits revealed by a phylogeny of the hyperdiverse tribe Eumaeini (Lepidoptera: Lycaenidae).
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Valencia-Montoya WA, Quental TB, Tonini JFR, Talavera G, Crall JD, Lamas G, Busby RC, Carvalho APS, Morais AB, Oliveira Mega N, Romanowski HP, Liénard MA, Salzman S, Whitaker MRL, Kawahara AY, Lohman DJ, Robbins RK, and Pierce NE
- Subjects
- Animals, Biological Evolution, Male, Phenotype, Pheromones, Phylogeny, Butterflies
- Abstract
Male butterflies in the hyperdiverse tribe Eumaeini possess an unusually complex and diverse repertoire of secondary sexual characteristics involved in pheromone production and dissemination. Maintaining multiple sexually selected traits is likely to be metabolically costly, potentially resulting in trade-offs in the evolution of male signals. However, a phylogenetic framework to test hypotheses regarding the evolution and maintenance of male sexual traits in Eumaeini has been lacking. Here, we infer a comprehensive, time-calibrated phylogeny from 379 loci for 187 species representing 91% of the 87 described genera. Eumaeini is a monophyletic group that originated in the late Oligocene and underwent rapid radiation in the Neotropics. We examined specimens of 818 of the 1096 described species (75%) and found that secondary sexual traits are present in males of 91% of the surveyed species. Scent pads and scent patches on the wings and brush organs associated with the genitalia were probably present in the common ancestor of Eumaeini and are widespread throughout the tribe. Brush organs and scent pads are negatively correlated across the phylogeny, exhibiting a trade-off in which lineages with brush organs are unlikely to regain scent pads and vice versa . In contrast, scent patches seem to facilitate the evolution of scent pads, although they are readily lost once scent pads have evolved. Our results illustrate the complex interplay between natural and sexual selection in the origin and maintenance of multiple male secondary sexual characteristics and highlight the potential role of sexual selection spurring diversification in this lineage.
- Published
- 2021
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38. Oro-facial motor assessment: validation of the MBLF protocol in facial palsy.
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Picard D, Lannadere E, Robin E, Hervochon R, Lamas G, Tankere F, and Gatignol P
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- Face, Facial Muscles, Humans, Prospective Studies, Reproducibility of Results, Bell Palsy, Facial Paralysis diagnosis
- Abstract
Background: Oro-facial myofunctional praxis assesses the muscular coordination and the degree of motor impairment of the lingual, mandibular and facial muscles necessary for articulation, mimicry and swallowing., Purpose: The objective of this study was to create and validate the MBLF protocol, a French oro-facial myofunctional assessment in order to quantify patient's impairment and to specify the motor and functional deficit for an adapted management., Methods: The MBLF was validated against the Sunnybrook Facial Grading System (criterion validity). The construct validity was tested by comparing healthy subjects (n = 102) from patients with facial palsy (n = 60). Internal and external consistency of face symmetry were reported. Normative data was provided., Results: There was a statistically significant correlation between the MBLF protocol and the Sunnybrook Facial Grading System [F(59) = 310.51, p < 0.001, R
2 = 0.843]. Significant differences were observed in Student's t test between healthy volunteers and patients with facial palsy [t(74.13) = 14,704, p < 0.001, r = 0.863]. A significant effect of the severity grades of facial palsy on the MBLF_TOTAL scores was found [F(158) = 268.469, p < 0.001]. The more severe the facial palsy, the lower the motor scores were., Conclusion: This MBLF French validation provides a baseline for comparing and quantifying the performance of subjects. The MBLF protocol is valid for assessing facial symmetry in peripheral facial palsy. A prospective study is needed to validate its role in dynamic evaluation of facial palsy.- Published
- 2021
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39. Recurrent Somatic Chromosomal Abnormalities in Relapsed Extraocular Retinoblastoma.
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Aschero R, Francis JH, Ganiewich D, Gomez-Gonzalez S, Sampor C, Zugbi S, Ottaviani D, Lemelle L, Mena M, Winter U, Correa Llano G, Lamas G, Lubieniecki F, Szijan I, Mora J, Podhajcer O, Doz F, Radvanyi F, Abramson DH, Llera AS, Schaiquevich PS, Lavarino C, and Chantada GL
- Abstract
Most reports about copy number alterations (CNA) in retinoblastoma relate to patients with intraocular disease and features of children with extraocular relapse remain unknown, so we aimed to describe the CNA in this population. We evaluated 23 patients and 27 specimens from 4 centers. Seventeen cases had extraocular relapse after initial enucleation and six cases after an initial preservation attempt. We performed an analysis of CNA and BCOR gene alteration by SNP array (Single Nucleotide Polymorfism array), whole-exome sequencing, IMPACT panel and CGH array (Array-based comparative genomic hybridization). All cases presented CNA at a higher prevalence than those reported in previously published studies for intraocular cases. CNA previously reported for intraocular retinoblastoma were found at a high frequency in our cohort: gains in 1q (69.5%), 2p (60.9%) and 6p (86.9%), and 16q loss (78.2%). Other, previously less-recognized, CNA were found including loss of 11q (34.8%), gain of 17q (56.5%), loss of 19q (30.4%) and BCOR alterations were present in 72.7% of our cases. A high number of CNA including 11q deletions, 17q gains, 19q loss, and BCOR alterations, are more common in extraocular retinoblastoma. Identification of these features may be correlated with a more aggressive tumor warranting consideration for patient management.
- Published
- 2021
- Full Text
- View/download PDF
40. Two new species of Hermeuptychia from North America and three neotype designations (Nymphalidae: Satyrinae).
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Cong Q, Barbosa EP, Marín MA, Freitas AVL, Lamas G, and Grishin NV
- Abstract
Two new species of Hermeuptychia Forster, 1964 are described. Hermeuptychia sinuosa Grishin, sp. n . (type locality Guatemala: El Progreso, Morazán) is an isolated member of the genus that does not readily fit into known species groups, as suggested by its distinct male and female genitalia and COI DNA barcode sequences. It is distinguished from its congeners by prominently wavy submarginal lines, rounder wings and distinctive genitalia, and can typically be identified by a white dot, instead of an eyespot, near the ventral hindwing apex. Hermeuptychia occidentalis Grishin, sp. n . (type locality Mexico: Guerrero, Acapulco) belongs to the Hermeuptychia sosybius group as indicated by the presence of androconia on the dorsal surface of the wings, genitalia and COI DNA barcodes, and in addition to DNA characters, differs from its relatives in the shape of the uncus and female genitalia. Neotypes of Oreas strigata canthe Hübner, [1811] (type locality Suriname: Gelderland, Suriname River), Megisto acmenis Hübner, 1823 (type locality Argentina: Buenos Aires), and Satyrus cantheus Godart, [1824] (type locality USA: Florida, Pinellas Co., St. Petersburg) and lectotype of Euptychia celmis var. bonaërensis [sic] Burmeister, 1878 (type locality Argentina: Buenos Aires) are designated. These designations establish Hermeuptychia canthe as a valid species widely distributed in South America from Colombia to Bolivia and Southeast Brazil, Euptychia celmis var. bonaërensis [sic] Burmeister, 1878 as a junior objective synonym of Yphthimoides acmenis , and S. cantheus as a junior subjective synonym of Hermeuptychia sosybius (Fabricius, 1793). Papilio camerta Cramer, 1780 is treated as nomen dubium requiring further studies to determine an identity that is consistent with the original description, as it may be conspecific with Paryphthimoides poltys (Prittwitz, 1865) instead of being a Hermeuptychia species as currently assumed.
- Published
- 2021
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41. Bridging the treatment gap in infant medulloblastoma: molecularly informed outcomes of a globally feasible regimen.
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Baroni LV, Sampor C, Gonzalez A, Lubieniecki F, Lamas G, Rugilo C, Bartels U, Heled A, Smith KS, Northcott PA, Bouffet E, Alderete D, and Ramaswamy V
- Subjects
- Antineoplastic Combined Chemotherapy Protocols therapeutic use, Argentina, Child, Preschool, Cranial Irradiation, Female, Hedgehog Proteins genetics, Humans, Infant, Male, Retrospective Studies, Cerebellar Neoplasms drug therapy, Medulloblastoma drug therapy
- Abstract
Background: Infant medulloblastoma represents an enormous challenge in neuro-oncology, due to their simultaneous high-risk of recurrence and high risk of severe neurodevelopmental sequelae with craniospinal irradiation. Currently infant medulloblastoma are treated with intensified protocols, either comprising intraventricular methotrexate or autologous transplant, both of which carry significant morbidity and are not feasible in the majority of the world. We sought to evaluate the molecular predictors of outcome in a cohort of infants homogeneously treated with induction chemotherapy, focal radiation and maintenance chemotherapy., Methods: In a retrospective analysis, 29 young children treated with a craniospinal irradiation sparing strategy from Hospital Garrahan in Buenos Aires were profiled using Illumina HumanMethylationEPIC arrays, and correlated with survival., Results: Twenty-nine children (range, 0.3-4.6 y) were identified, comprising 17 sonic hedgehog (SHH), 10 Group 3/4, and 2 non-medulloblastomas. Progression-free survival (PFS) across the entire cohort was 0.704 (95% CI: 0.551-0.899). Analysis by t-distributed stochastic neighbor embedding revealed 3 predominant groups, SHHβ, SHHγ, and Group 3. Survival by subtype was highly prognostic with SHHγ having an excellent 5-year PFS of 100% (95% CI: 0.633-1) and SHHβ having a PFS of 0.56 (95% CI: 0.42-1). Group 3 had a PFS of 0.50 (95% CI: 0.25-1). Assessment of neurocognitive outcome was performed in 11 patients; the majority of survivors fell within the low average to mild intellectual disability, with a median IQ of 73.5., Conclusions: We report a globally feasible and effective strategy avoiding craniospinal radiation in the treatment of infant medulloblastoma, including a robust molecular correlation along with neurocognitive outcomes., (© The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Neuro-Oncology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2020
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42. Description of a new genus and species for a common and widespread Amazonian satyrine butterfly (Lepidoptera: Nymphalidae: Satyrinae: Satyrini).
- Author
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Nakahara S, Lamas G, Willmott K, and Espeland M
- Abstract
We here propose a new monotypic butterfly genus Scriptor Nakahara & Espeland, n. gen. to accommodate a new species, S. sphenophorus Lamas & Nakahara, n. sp. , described and named herein. Scriptor sphenophorus n. gen. and n. sp. is a relatively common and widespread butterfly species which is recovered as a member of the so-called " Splendeuptychia clade" in the nymphalid subtribe Euptychiina, based on our molecular phylogenetic analysis using a maximum likelihood approach. Nevertheless, its sister group is not confidently resolved in any analysis, supporting a relatively distant relationship to any described genus as well as our decision to establish a new monotypic genus. We further discuss the proposed taxonomy in the light of frequent criticism of the description of monotypic taxa, as well as emphasize the importance of incorporating multiple evidence when describing new genera, illustrated by reference to several recent generic descriptions in this subtribe., Competing Interests: The authors declare there are no competing interests., (©2020 Nakahara et al.)
- Published
- 2020
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43. French Society of ENT (SFORL) guidelines. Management of acute Bell's palsy.
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Fieux M, Franco-Vidal V, Devic P, Bricaire F, Charpiot A, Darrouzet V, Denoix L, Gatignol P, Guevara N, Montava M, Roch JA, Tankéré F, Tronche S, Veillon F, Vergez S, Vincent C, Lamas G, and Tringali S
- Subjects
- Acute Disease, Adrenal Cortex Hormones administration & dosage, Adrenal Cortex Hormones therapeutic use, Antiviral Agents therapeutic use, Bell Palsy drug therapy, Contrast Media, Decompression, Surgical, Drug Administration Schedule, Drug Therapy, Combination methods, Facial Nerve diagnostic imaging, Facial Paralysis diagnosis, France, Gadolinium, Herpes Zoster Oticus drug therapy, Humans, Hyperbaric Oxygenation, Magnetic Resonance Imaging, Neurologic Examination, Otolaryngology, Physical Therapy Modalities, Prognosis, Recovery of Function, Societies, Medical, Bell Palsy diagnosis, Bell Palsy therapy
- Abstract
AQFThe authors present the guidelines of the French Society of ENT and Head and Neck Surgery (SFORL) regarding the management of Bell's palsy in adults. After a literature review by a multidisciplinary workgroup, guidelines were drawn up based on retrieved articles and group-members' experience, then read over by an independent group to edit the final version. Guidelines were graded A, B, C or "expert opinion" according to decreasing level of evidence. Thorough ENT and neurological clinical examination is recommended in all patients presenting with peripheral facial palsy to confirm diagnosis of Bell's palsy. MRI with gadolinium enhancement should explore the entire course of the facial nerve, if possible within the first month. ENMG should be performed to assess prognosis for recovery. In confirmed Bell's palsy, corticosteroid therapy should be implemented as early as possible (ideally within 72h) at a dose of 1mg/kg/day for 7-10 days. Antiviral therapy should be associated to steroids in patients with severe and early-onset disease and in Ramsay-Hunt syndrome. Isolated antiviral therapy is not recommended. To date, there is no evidence that surgical facial nerve decompression provides benefit., (Copyright © 2020 Elsevier Masson SAS. All rights reserved.)
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- 2020
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44. Revalidation of Vareuptychia Forster, 1964, description of Vanima gen. nov., and notes on Euptychia cleophes Godman amp; Salvin, 1889 (Lepidoptera: Nymphalidae: Satyrinae).
- Author
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Zacca T, Casagrande MM, Mielke OHH, Huertas B, Espeland M, Freitas AVL, Willmott KR, Nakahara S, and Lamas G
- Subjects
- Animals, Genitalia, Butterflies
- Abstract
Vareuptychia Forster, 1964 stat. rest. is revalidated and comprises two species, V. similis (Butler, 1867) comb. rest. and V. themis (Butler, 1867) comb. nov. Vanima Zacca, Casagrande Mielke gen. nov. is described to contain Euptychia labe Butler, 1870 (the type species), E. palladia Butler, 1867 and E. lesbia Staudinger, [1886]. The taxonomy of these two genera was initially revised based on morphological and distributional data, and subsequently tested and supported with a Maximum Likelihood analysis using four genes (COI, GAPDH, RpS5 and EF1-a). Lectotypes are designated for Euptychia similis Butler, 1867, E. themis Butler, 1867, E. undina Butler, 1870 and E. lesbia Staudinger, [1886]. No DNA sequences were obtained for Euptychia cleophes Godman Salvin, 1889 but its transfer to Megisto Hübner, [1819] is supported by morphological evidence. For all taxa treated in this study, a taxonomic catalog, diagnosis, (re)description and illustrations of adults, venation and genitalia are provided, as well as comments on intraspecific variation, sexual dichromatism, ecology and distribution maps.
- Published
- 2020
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45. Clinical, Genomic, and Pharmacological Study of MYCN -Amplified RB1 Wild-Type Metastatic Retinoblastoma.
- Author
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Zugbi S, Ganiewich D, Bhattacharyya A, Aschero R, Ottaviani D, Sampor C, Cafferata EG, Mena M, Sgroi M, Winter U, Lamas G, Suñol M, Daroqui M, Baialardo E, Salas B, Das A, Fandiño A, Francis JH, Lubieniecki F, Lavarino C, Garippa R, Podhajcer OL, Abramson DH, Radvanyi F, Chantada G, Llera AS, and Schaiquevich P
- Abstract
An uncommon subgroup of unilateral retinoblastomas with highly aggressive histological features, lacking aberrations in RB1 gene with high-level amplification of MYCN ( MCYN ampl RB1 +/+) has only been described as intra-ocular cases treated with initial enucleation. Here, we present a comprehensive clinical, genomic, and pharmacological analysis of two cases of MCYN ampl RB1 +/+ with orbital and cervical lymph node involvement, but no central nervous system spread, rapidly progressing to fatal disease due to chemoresistance. Both patients showed in common MYCN high amplification and chromosome 16q and 17p loss. A somatic mutation in TP53 , in homozygosis by LOH, and high chromosomal instability leading to aneuploidy was identified in the primary ocular tumor and sites of dissemination of one patient. High-throughput pharmacological screening was performed in a primary cell line derived from the lymph node dissemination of one case. This cell line showed resistance to broad spectrum chemotherapy consistent with the patient's poor response but sensitivity to the synergistic effects of panobinostat-bortezomib and carboplatin-panobinostat associations. From these cells we established a cell line derived xenograft model that closely recapitulated the tumor dissemination pattern of the patient and served to evaluate whether triple chemotherapy significantly prolonged survival of the animals. We report novel genomic alterations in two cases of metastatic MCYN ampl RB1 +/+ that may be associated with chemotherapy resistance and in vitro/in vivo models that serve as basis for tailoring therapy in these cases.
- Published
- 2020
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46. Evolution of the management of sporadic facial nerve schwannomas: A series of 83 cases over three decades.
- Author
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Lahlou G, Tankere F, Bernardeschi D, Nguyen Y, Lamas G, and Sterkers O
- Subjects
- Adolescent, Adult, Aged, Anastomosis, Surgical, Conservative Treatment, Female, Humans, Male, Middle Aged, Retrospective Studies, Facial Nerve, Neurilemmoma therapy
- Published
- 2020
- Full Text
- View/download PDF
47. A new species of Mathania Oberthür, 1890 from Peru (Lepidoptera, Pieridae).
- Author
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Farfán J, Lamas G, and Cerdeña J
- Subjects
- Animals, Female, Male, Peru, Plants, Butterflies, Lepidoptera, Moths
- Abstract
A new species of the genus Mathania Oberthür, 1890, M. hughesi Lamas, Farfán Cerdeña, sp. n. is described from the southwestern slopes of the Andes of Peru, associated with xerophytic environments, between 2300 and 3500 m elevation. This new species is distinguishable from its congeners by the following external character: a black band on forewing dorsal surface at the end of the discal cell, extending from the costal margin to the base of cell M3-CuA1. Adults and male and female genitalia are illustrated and compared to other species of Mathania. In addition, we report Ligaria cuneifolia (R. et P.) Tiegh. (Loranthaceae) as host plant of M. hughesi.
- Published
- 2020
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- View/download PDF
48. Melanotic neuroectodermal tumor of infancy arising from the skull: report of an unusual case, review of the literature, and a diagnostic approach.
- Author
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Mengide JP, Jaimovich SG, Lubieniecki FJ, Rugilo C, Lamas G, and Mantese B
- Subjects
- Child, Diagnosis, Differential, Humans, Infant, Skull, Neuroectodermal Tumor, Melanotic diagnostic imaging, Neuroectodermal Tumor, Melanotic surgery, Skull Neoplasms diagnostic imaging, Skull Neoplasms surgery
- Abstract
Introduction: Melanotic neuroectodermal tumor of infancy is a rare neoplasm mainly seen in children under 1 year of life. The most common location of the tumor is the maxilla followed by the cranial vault. Surgery is the treatment of choice and outcome mainly depends on extent of resection., Objectives: To report an atypical case of an 8-year-old patient with a melanotic neuroectodermal tumor of infancy, to review the cases with melanotic neuroectodermal tumor of infancy arising from the skull published over the last 13 years, and to provide a diagnostic approach that may allow recognition of a pattern in these rare neoplastic lesions., Methods: A case is reported with a description of the clinical, radiological, surgical, and histopathological features. Additionally, the literature was reviewed to identify reports of patients with melanotic neuroectodermal tumor of infancy arising from the cranial vault and all cases published in PubMed over the last 13 years were included. Only studies that evaluated clinical, radiological, surgical, and histopathological findings were included., Conclusion: Melanotic neuroectodermal tumor of infancy is a rare entity that may present with unusual features, but nevertheless has an identifiable pattern that allows the tumor to be considered in the differential diagnosis of intracranial space-occupying lesions in children.
- Published
- 2020
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49. Limb Preservation Using Edetate Disodium-based Chelation in Patients with Diabetes and Critical Limb Ischemia: An Open-label Pilot Study.
- Author
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Arenas I, Ujueta F, Diaz D, Yates T, Olivieri B, Beasley R, and Lamas G
- Abstract
Background In 2015, there were 30.3 million patients with diabetes in the US, including 25.2% of people ages 65 or older and 108,000 hospitalizations for non-traumatic amputations. Severe diabetic limb disease includes critical limb ischemia (CLI ) due to an infrapopliteal disease with foot pain and ischemic ulcerations including gangrene. Environmentally acquired toxic metals, such as lead and cadmium, have been associated with cardiovascular disease. Thus, we designed the present unblinded pilot study to determine whether there was a signal of benefit for edetate disodium-based infusions in patients with critical limb ischemia. Methods This was an open-label pilot study in 10 patients with diabetes and critical limb ischemia. Each patient received up to 50 edetate disodium-based infusions and was assessed for safety, clinical efficacy, metal excretion, and quality of life. The primary endpoint was to assess the effect of edetate disodium-based therapy plus vitamins in patients with diabetes and infra-popliteal peripheral artery disease presenting with severe CLI and determine if there were improvements in vascular flow parameters. Results We enrolled 10 (60% male) predominantly Caucasian (90%) subjects. The mean age was 75.3 (8.0) years. Smoking was reported by 30%. There were 70% with coronary artery disease (30% had prior coronary artery bypass grafting) and 50% had a prior lower-extremity amputation, three having previous minor amputations and two major amputations. There were no major adverse cardiovascular events during the infusion phase through the one-year follow-up. Patients completing 40 infusions demonstrated complete wound healing and improvement in the quality of life. Conclusion Patients with diabetes and CLI treated with a regimen of edetate disodium-based infusions demonstrated a potential signal of benefit and preliminary evidence of safety. The Trial to Assess Chelation Therapy in Critical Limb Ischemia (TACT3a), a randomized double-blind, placebo-controlled clinical trial now in progress, will further test these findings., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2019, Arenas et al.)
- Published
- 2019
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50. Edetate Disodium-based Treatment in a Woman with Diabetes and Critical Limb Ischemia Scheduled for Lower Extremity Amputation.
- Author
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Ujueta F, Vozzi C, Vozzi L, and Lamas G
- Abstract
Historically, it is underappreciated that women undergoing amputation for critical limb ischemia (CLI) are older, more severely ill, and have a poorer prognosis than men. Epidemiological studies have shown an association between environmentally acquired vasculotoxic metals, coronary events, and peripheral artery disease. In this paper, we describe an elderly woman with CLI referred for primary amputation underwent edetate disodium-based treatment, known to reduce toxic metal burden, as a final option for limb salvage., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2019, Ujueta et al.)
- Published
- 2019
- Full Text
- View/download PDF
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