221 results on '"Adams, Damian"'
Search Results
202. Sperm donation perinatal outcomes in an Australian population cohort
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Kristyn Willson, Sheryl de Lacey, Alice R. Rumbold, Vivienne M. Moore, Michael J. Davies, Damian H. Adams, Renae C Fernandez, Wendy Scheil, Adams, Damian, Fernandez, Renae, Moore, Vivienne, Willson, Kristyn, Rumbold, Alice, de Lacey, Sheryl, Scheil, Wendy, and Davies, Michael
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Adult ,Male ,Sperm donation ,medicine.medical_specialty ,Tissue and Organ Procurement ,Reproductive Techniques, Assisted ,Population ,Twins ,population ,Gestational Age ,film.subject ,Cohort Studies ,03 medical and health sciences ,0302 clinical medicine ,spermatozoa ,Pregnancy ,medicine ,Birth Weight ,Humans ,insemination artificial ,030212 general & internal medicine ,education ,Generalized estimating equation ,Cryopreservation ,education.field_of_study ,030219 obstetrics & reproductive medicine ,Obstetrics ,business.industry ,Australia ,Infant, Newborn ,Pregnancy Outcome ,Obstetrics and Gynecology ,Gestational age ,Infant, Low Birth Weight ,medicine.disease ,infant ,Sperm ,Spermatozoa ,Donor Conception ,film ,Cohort ,Pregnancy, Twin ,Small for gestational age ,Premature Birth ,Female ,donor conception ,business ,Semen Preservation - Abstract
Aim: To compare perinatal outcomes for neonates conceived with donated sperm with those for neonates conceived spontaneously in an Australian population cohort. Methods: Perinatal outcomes for all births in South Australia for the period January 1986–December 2002 were linked with assisted reproductive treatment records to determine those conceived from donated sperm. Birth outcome measures were analyzed using Student's t-test and logistic regression using generalized estimating equations to determine statistical significance. Results: Donor sperm neonates were not significantly different from their spontaneously conceived counterparts in terms of mean birthweight, low birthweight, preterm delivery, small for gestational age, or large for gestational age. They were, however, significantly more likely to be born at lower mean gestational age (P = 0.012), and to have preterm delivery with low birthweight (P = 0.008), when controlling for maternal age, parity, ethnicity, socioeconomic quartile and baby's sex. These associations were not apparent when singletons and twins were considered separately. Conclusion: There was some evidence of compromised perinatal outcomes for donor sperm neonates compared with their spontaneously conceived counterparts, which appeared to be partly attributable to multiplicity. usc Refereed/Peer-reviewed
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- 2017
203. A Novel Murine Model of Hypertrophic Scarring Using Subcutaneous Infusion of Bleomycin
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Alexander M. Cameron, Damian H. Adams, John E. Greenwood, Peter J. Anderson, Allison J. Cowin, Cameron, Alexander MacGregor, Adams, Damian Hedley, Greenwood, John, Anderson, Peter, and Cowin, Allison June
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mice ,Cicatrix, Hypertrophic ,antineoplastic ,inbred balb c ,hypertrophic ,cicatrix ,Infusions, Subcutaneous ,antibiotics ,Bleomycin ,Mice ,fibroblasts ,Animals ,Humans ,animal ,humans ,Infusion Pumps ,Mice, Inbred BALB C ,disease models ,infusion pumps ,Antibiotics, Antineoplastic ,bleomycin ,Reproducibility of Results ,Dermis ,Fibroblasts ,dermis ,infusions ,animals ,Disease Models, Animal ,subcutaneous ,Surgery ,reproducibility of results - Abstract
Background: The development of new therapies for hypertrophic scarring has been hampered by the lack of an appropriate animal model. The authors' objective was to establish a reproducible murine model of hypertrophic scarring by infusing bleomycin over a prolonged period to stimulate dermal fibroproliferation. Conclusions: The bleomycin infusion model stimulates dermal fibroproliferation, creating reproducible murine scars that are comparable to human hypertrophic scars in terms of histological features, collagen content and organization, cellularity, the presence of myofibroblasts, and expression of transforming growth factor β1. The bleomycin model represents a promising technique for studying scar formation and testing new antiscarring therapies. Methods: Osmotic pumps filled with 90 μl of 2.8 mg/ml bleomycin or a control solution (phosphate-buffered saline) were inserted subcutaneously under the dorsal skin of BALB/c mice. The pumps delivered their content at a constant rate of 0.11 μl/hour for 28 days before mice were euthanized or kept alive for a further 28 days and euthanized at day 56. The resulting lesions were analyzed using histological and immunohistochemical techniques. Results: The lesions displayed histopathological features of hypertrophic scar similar to those observed in humans and had increased cellularity, abnormal collagen I-collagen III ratios, elevated levels of the proscarring cytokine transforming growth factor β1, and increased numbers of myofibroblasts. The 28-day model displayed features analogous to those of a developing human hypertrophic scar, while the 56-day model was analogous to a mature hypertrophic scar. Refereed/Peer-reviewed
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- 2014
204. Gender specific effects on the actin-remodelling protein Flightless I and TGF-β1 contribute to impaired wound healing in aged skin
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Jane A. Hooper-Jones, Allison J. Cowin, Klaus I. Matthaei, Hugh Campbell, Barry C. Powell, Damian H. Adams, Xanthe L. Strudwick, Zlatko Kopecki, Adams, Damian H, Strudwick, Xanthe L, Kopecki, Zlatko, Hooper-Jones, Jane A, Matthaei, Klaus I, Campbell, Hugh D, Powell, Barry C, and Cowin, Allison
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Male ,Genetically modified mouse ,Aging ,Cytoplasm ,medicine.medical_specialty ,actin cytoskeleton ,wound ,Estrogen receptor ,Mice, Transgenic ,Biology ,Biochemistry ,Transforming Growth Factor beta1 ,Mice ,Sex Factors ,Downregulation and upregulation ,Internal medicine ,Gene expression ,medicine ,Animals ,Humans ,Secretion ,Cell Nucleus ,Wound Healing ,Estradiol ,integumentary system ,Epidermis (botany) ,Microfilament Proteins ,aging ,Cell Biology ,Fibroblasts ,Actin cytoskeleton ,Up-Regulation ,Cytoskeletal Proteins ,Protein Transport ,Endocrinology ,Immunology ,Trans-Activators ,Female ,Carrier Proteins ,Wound healing - Abstract
Impaired wound healing in the elderly presents a major clinical challenge. Understanding the cellular mechanisms behind age-related impaired healing is vital for developing new wound therapies. Here we show that the actin-remodelling protein, Flightless I (FliI) is a contributing factor to the poor healing observed in elderly skin and that gender plays a major role in this process. Using young and aged, wild-type and FliI overexpressing mice we found that aging significantly elevated FliI expression in the epidermis and wound matrix. Aging exacerbated the negative effect of FliI on wound repair and wounds in aged FliI transgenic mice were larger with delayed reepithelialisation. When the effect of gender was further analysed, despite increased FliI expression in young and aged male and female mice, female FliI transgenic mice had the most severe wound healing phenotype suggesting that male mice were refractory to FliI gene expression. Of potential importance, males, but not females, up-regulated transforming growth factor-β1 and this was most pronounced in aged male FliI overexpressing wounds. As FliI also functions as a co-activator of the estrogen nuclear receptor, increasing concentrations of β-estradiol were added to skin fibroblasts and keratinocytes and significantly enhanced FliI expression and translocation of FliI from the cytoplasm to the nucleus was observed. FliI further inhibited estrogen-mediated collagen I secretion suggesting a mechanism via which FliI may directly affect provisional matrix synthesis. In summary, FliI is a contributing factor to impaired healing and strategies aimed at decreasing FliI levels in elderly skin may improve wound repair. Refereed/Peer-reviewed
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- 2008
205. Tropomyosin Regulates Cell Migration during Skin Wound Healing
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Cuc T. Bach, Yu Wooi Ching, Anthony J. Kee, Edna C. Hardeman, Geraldine M. O'Neill, Damian H. Adams, Justin G. Lees, Allison J. Cowin, Peter W. Gunning, Michael S. Samuel, Lees, Justin G, Ching, Yu Wooi, Adams, Damian H, Bach, Cuc TT, Samuel, Michael S, Kee, Anthony J, Hardeman, Edna C, Gunning, Peter, Cowin, Allison J, and O'Neill, Geraldine M
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wound healing ,Tropomyosin ,Biochemistry ,Extracellular matrix ,tropomyosin ,Mice ,0302 clinical medicine ,Cell Movement ,animal ,Phosphorylation ,Mmce ,Cells, Cultured ,Skin ,Mice, Knockout ,0303 health sciences ,Cell migration ,cell line ,Cell biology ,Extracellular Matrix ,rac GTP-Binding Proteins ,Rac GTP-Binding Proteins ,animals ,GTP-binding proteins ,030220 oncology & carcinogenesis ,Models, Animal ,Female ,signal transduction ,Signal Transduction ,tumor ,skin ,extracellular matrix ,Actin filament organization ,Mice, Transgenic ,Dermatology ,macromolecular substances ,Biology ,03 medical and health sciences ,models ,Cell Line, Tumor ,Animals ,cultured ,Molecular Biology ,Actin ,030304 developmental biology ,Cell Proliferation ,Wound Healing ,Actin remodeling ,Cell Biology ,Mice, Inbred C57BL ,cell proliferation ,cells ,Paxillin ,Wound healing - Abstract
Precise orchestration of actin polymer into filaments with distinct characteristics of stability, bundling, and branching underpins cell migration. A key regulator of actin filament specialization is the tropomyosin family of actin-associating proteins. This multi-isoform family of proteins assemble into polymers that lie in the major groove of polymerized actin filaments, which in turn determine the association of molecules that control actin filament organization. This suggests that tropomyosins may be important regulators of actin function during physiological processes dependent on cell migration, such as wound healing. We have therefore analyzed the requirement for tropomyosin isoform expression in a mouse model of cutaneous wound healing. We find that mice in which the 9D exon from the TPM3/γTm tropomyosin gene is deleted (γ9D -/-) exhibit a more rapid wound-healing response 7 days after wounding compared with wild-type mice. Accelerated wound healing was not associated with increased cell proliferation, matrix remodeling, or epidermal abnormalities, but with increased cell migration. Rac GTPase activity and paxillin phosphorylation are elevated in cells from γ9D -/- mice, suggesting the activation of paxillin/Rac signaling. Collectively, our data reveal that tropomyosin isoform expression has an important role in temporal regulation of cell migration during wound healing. Refereed/Peer-reviewed
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- 2015
206. Evaluation of a topical treatment for the relief of sensitive skin
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Ingrid R Heinicke, Damian H. Adams, Tanya M Barnes, Kerryn A Greive, Heinicke, Ingrid R, Adams, Damian H, Barnes, Tanya M, and Greive, Kerryn A
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collagen ,Pathology ,medicine.medical_specialty ,Erythema ,Population ,Dermatology ,Pharmacology ,Sensitive skin ,Foreskin ,medicine ,education ,Adverse effect ,Hydrocortisone ,Original Research ,moisturization ,education.field_of_study ,Transepidermal water loss ,integumentary system ,business.industry ,Sting ,medicine.anatomical_structure ,Clinical, Cosmetic and Investigational Dermatology ,inflammation ,sensitive skin ,medicine.symptom ,business ,erythema ,medicine.drug - Abstract
Ingrid R Heinicke,1 Damian H Adams,2 Tanya M Barnes,1 Kerryn A Greive1 1Ego Pharmaceuticals, Braeside, VIC, Australia; 2Mawson Institute, University of South Australia, Mawson Lakes, SA, Australia Background: Approximately, 50% of the population claim to have sensitive skin, which has created an important challenge for dermatologists and the cosmetic industry. This study evaluates the properties of QV Face Rescue Gel (Rescue Gel) that contains a combination of moisturizing and anti-irritant ingredients, and which is used to relieve the symptoms of sensitive facial skin. Methods: The ability of Rescue Gel to induce collagen types I and III in cultured neonatal human foreskin fibroblasts compared to transforming growth factor beta 1, a known potent inducer of collagen types I and III, was measured using immunofluorescence staining. Furthermore, healthy volunteers were recruited to measure the potential for Rescue Gel to reduce erythema induced by solar-simulated ultraviolet radiation on the skin compared to 0.5% hydrocortisone cream (positive control) as well as it's ability to decrease transepidermal water loss compared to baseline levels. In addition, the formulation was tested for its potential to be 1) nonstinging using a facial sting/discomfort assay performed on volunteers who reacted positively to lactic acid, 2) nonirritating as determined by repeat insult patch tests, and 3) noncomedogenic. Results: Rescue Gel significantly induced collagen types I and III in cultured human foreskin fibroblasts similarly to transforming growth factor beta 1. In volunteers, Rescue Gel was shown to significantly reduce erythema induced by solar-simulated ultraviolet radiation similarly to 0.5% hydrocortisone, and to significantly reduce transepidermal water loss compared to baseline levels. Further, the formulation was found to be nonstinging, nonirritating, and noncomedogenic. No adverse events were observed. Conclusion: In this study, Rescue Gel has been shown to exhibit properties that make it effective for use on sensitive or irritated facial skin, without exacerbation of the symptoms associated with sensitive skin. Keywords: sensitive skin, inflammation, moisturization, collagen, erythema
- Published
- 2015
207. Conceptualising a Child-Centric Paradigm
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Adams, Damian H
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child welfare ,reproductive techniques, assisted ,ethics ,policy - Abstract
Since its inception, donor conception practices have been a reproductive choice for the infertile. Past and current practices have the potential to cause significant and lifelong harm to the offspring through loss of kinship, heritage, identity, and family health history, and possibly through introducing physical problems. Legislation and regulation in Australia that specifies that the welfare of the child born as a consequence of donor conception is paramount may therefore be in conflict with the outcomes. Altering the paradigm to a child-centric model, however, impinges on reproductive choice and rights of adults involved in the process. With some lobby groups pushing for increased reproductive choice while others emphasise offspring rights there is a dichotomy of interests that society and legislators need to address. Concepts pertaining to a shift toward a child-centric paradigm are discussed. usc Refereed/Peer-reviewed
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- 2013
208. Flii neutralizing antibodies improve wound healing in porcine preclinical studies
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Jackson, Jessica E, Kopecki, Zlatko, Adams, Damian H, and Cowin, Allison J
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nonhuman ,surgical wound ,integumentary system ,cell migration ,animal model ,animal experiment ,article ,swine ,wound healing ,wound dressing ,myofibroblast ,animal tissue ,histology ,cell proliferation ,female ,male ,priority journal ,tensile strength ,scar formation ,epithelization ,controlled study ,protein expression ,mouse - Abstract
Wound healing is an important area of widely unmet medical need, with millions of procedures carried out worldwide which could potentially benefit from a product to improve the wound repair process. Our studies investigating the actin-remodeling protein Flightless I (Flii) show it to be an important regulator of wound healing. Flii-deficient mice have enhanced wound healing in comparison to Flii overexpressing mice which have impaired wound healing. For the first time, we show that a Flightless I neutralizing monoclonal antibody (FnAb) therapy is effective in a large animal model of wound repair. Porcine 5 cm incisional and 6.25 cm2 excisional wounds were treated with FnAb at the time of wounding and for two subsequent days. The wounds were dressed in Tegaderm dressings and left to heal by secondary intention for 7 and 35 days, respectively. At the relevant end points, the wounds were excised and processed for histological analysis. Parameters of wound area, collagen deposition, and scar appearance were analyzed. The results show that treatment with FnAb accelerates reepithelialization and improves the macroscopic appearance of early scars. FnAbs have the potential to enhance wound repair and reduce scar formation. Refereed/Peer-reviewed
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- 2012
209. Mouse strains for the ubiquitous or conditional overexpression of the Flii gene
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Radiya G. Ali, Allison J. Cowin, Tamsin E. M. Jones, Anna Chappell, Nicole Thomsen, Klaus I. Matthaei, Damian H. Adams, Hugh Campbell, Ruth M. Arkell, Thomsen, Nicole, Chappell, Anna, Ali, Radiya G, Jones, Tamsin, Adams, Damian H, Matthaei, Klaus I, Campbell, Hugh D, Cowin, Allison J, and Arkell, Ruth M
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Male ,RNA, Untranslated ,Time Factors ,Genotype ,Blotting, Western ,Receptors, Cytoplasmic and Nuclear ,Mice, Transgenic ,wound healing ,Mice ,Endocrinology ,Species Specificity ,Genetics ,Animals ,Actin-binding protein ,Allele ,ROSA26 ,Gene ,Skin ,Mice, Knockout ,Mice, Inbred BALB C ,Wound Healing ,biology ,Reverse Transcriptase Polymerase Chain Reaction ,Gene Expression Profiling ,Muscles ,Myocardium ,Microfilament Proteins ,Brain ,Proteins ,Cell Biology ,Null allele ,Embryonic stem cell ,Cell biology ,Cytoskeletal Proteins ,Trans-Activators ,biology.protein ,Female ,Carrier Proteins ,Wound healing ,Gelsolin ,Spleen ,Function (biology) - Abstract
The gelsolin related actin binding protein, Flii, is able to regulate wound healing; mice with decreased Flii expression show improved wound healing whereas mice with elevated Flii expression exhibit impaired wound healing. In both mice and humans Flii expression increases with age and amelioration of FLII activity represents a possible therapeutic strategy for improved wound healing in humans. Despite analysis of Flii function in a variety of organisms we know little of the molecular mechanisms underlying Flii action. Two new murine alleles of Flii have been produced to drive constitutive or tissue-specific expression of Flii. Each strain is able to rescue the embryonic lethality associated with a Flii null allele and to impair wound healing. These strains provide valuable resources for ongoing investigation of Flii function in a variety of biological processes. genesis 49:681–688, 2011. © 2011 Wiley-Liss, Inc.
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- 2011
210. Data on keratin expression in human cells cultured with Australian native plant extracts
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Allison J. Cowin, Damian H. Adams, Hans Wohlmuth, Qingyao Shou, Adams, Damian H, Shou, Qingyao, Wohlmuth, Hans, and Cowin, Allison June
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Pathology ,medicine.medical_specialty ,Immunofluorescence ,lcsh:Computer applications to medicine. Medical informatics ,01 natural sciences ,Geijera parviflora ,Tissue culture ,Australian native plants ,Keratin ,medicine ,lcsh:Science (General) ,Data Article ,chemistry.chemical_classification ,Multidisciplinary ,biology ,medicine.diagnostic_test ,integumentary system ,010405 organic chemistry ,keratin expression ,human cells ,biology.organism_classification ,Keratin 1 ,In vitro ,0104 chemical sciences ,010404 medicinal & biomolecular chemistry ,Biochemistry ,chemistry ,Rhodomyrtus psidioides ,lcsh:R858-859.7 ,Wound healing ,lcsh:Q1-390 - Abstract
Australian native plants have a long history of therapeutic use in indigenous cultures particularly for the treatment of wounds. We analysed 14 plant derived compounds from the species Pilidiostigma glabrum, Myoporum montanum, Geijera parviflora, and Rhodomyrtus psidioides for keratin 1, 5, 10 and 14 supporting the research article "Native Australian plant extracts differentially induce Collagen I and Collagen III in vitro and could be important targets for the development of new wound healing therapies" [5]. An in situ immunofluorescence assay was used in a 96 well tissue culture plate format to measure keratin expression in immortalised human keratinocytes (HaCaTs) exposed Australian native plant compounds to NMR spectra for the plant extracts are included in this article as is quantitative fluorescent intensity data of keratin 1, 5, 10 and 14 expression. Refereed/Peer-reviewed
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211. Self-reported mental health status of donor sperm-conceived adults.
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Adams DH, Gerace A, Davies MJ, and de Lacey S
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- Adult, Child, Female, Health Status, Humans, Infant, Newborn, Male, Mental Health, Pregnancy, Self Report, Spermatozoa, Tissue Donors
- Abstract
While donor-conceived children have similar mental health outcomes compared to spontaneously conceived children, there is an inconsistency between studies investigating mental health outcomes of donor-conceived people in adulthood. This study is an online health survey that was completed by 272 donor sperm-conceived adults and 877 spontaneously conceived adults from around the world. Donor sperm-conceived adults had increased diagnoses of attention deficit disorder (P = 0.004), and autism (P = 0.044) in comparison to those conceived spontaneously. Donor sperm-conceived adults self-reported increased incidences of seeing a mental health professional (P < 0.001), identity formation problems (P < 0.001), learning difficulties (P < 0.001), panic attacks (P = 0.038), recurrent nightmares (sperm P = 0.038), and alcohol/drug dependency (P = 0.037). DASS-21 analysis revealed that donor sperm-conceived adults were also more stressed than those conceived spontaneously (P = 0.013). Both donor sperm and spontaneously conceived cohorts were matched for sex, age, height, alcohol consumption, smoking, exercise, own fertility, and maternal smoking. The increase in adverse mental health outcomes is consistent with some studies of donor-conceived adult mental health outcomes. These results are also consistent with the Developmental Origins of Health and Disease (DOHaD) phenomenon that has linked adverse perinatal outcomes, which have been observed in donor-conceived neonates, to increased risk of chronic disease, including mental health. Further work is required to reconcile our observations in adults to contrary observations reported in donor-conceived children.
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- 2022
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212. Preinvasion Assessment of Exotic Bark Beetle-Vectored Fungi to Detect Tree-Killing Pathogens.
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Li Y, Bateman C, Skelton J, Wang B, Black A, Huang YT, Gonzalez A, Jusino MA, Nolen ZJ, Freeman S, Mendel Z, Kolařík M, Knížek M, Park JH, Sittichaya W, Pham TH, Ito SI, Torii M, Gao L, Johnson AJ, Lu M, Sun J, Zhang Z, Adams DC, and Hulcr J
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- Animals, Ecosystem, Fungi physiology, Plant Bark, Plant Diseases microbiology, Coleoptera microbiology, Coleoptera physiology, Trees microbiology
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Exotic diseases and pests of trees have caused continental-scale disturbances in forest ecosystems and industries, and their invasions are considered largely unpredictable. We tested the concept of preinvasion assessment of not yet invasive organisms, which enables empirical risk assessment of potential invasion and impact. Our example assesses fungi associated with Old World bark and ambrosia beetles and their potential to impact North American trees. We selected 55 Asian and European scolytine beetle species using host use, economic, and regulatory criteria. We isolated 111 of their most consistent fungal associates and tested their effect on four important southeastern American pine and oak species. Our test dataset found no highly virulent pathogens that should be classified as an imminent threat. Twenty-two fungal species were minor pathogens, which may require context-dependent response for their vectors at North American borders, while most of the tested fungi displayed no significant impact. Our results are significant in three ways; they ease the concerns over multiple overseas fungus vectors suspected of heightened potential risk, they provide a basis for the focus on the prevention of introduction and establishment of species that may be of consequence, and they demonstrate that preinvasion assessment, if scaled up, can support practical risk assessment of exotic pathogens.
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- 2022
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213. Systemic Delivery of Anti-Integrin αL Antibodies Reduces Early Macrophage Recruitment, Inflammation, and Scar Formation in Murine Burn Wounds.
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Strudwick XL, Adams DH, Pyne NT, Samuel MS, Murray RZ, and Cowin AJ
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- Animals, Burns pathology, Cicatrix prevention & control, Collagen drug effects, Collagen metabolism, Fibrosis drug therapy, Humans, Inflammation prevention & control, Inflammation Mediators, Macrophages metabolism, Male, Mice, Mice, Inbred BALB C, Transforming Growth Factor beta1 drug effects, Transforming Growth Factor beta1 metabolism, Tumor Necrosis Factor-alpha drug effects, Tumor Necrosis Factor-alpha metabolism, Antibodies, Monoclonal pharmacology, Burns drug therapy, CD11a Antigen immunology, Macrophages drug effects, Wound Healing drug effects
- Abstract
Objective: Increased macrophage recruitment in the early stages of wound healing leads to an excessive inflammatory response associated with elevated fibrosis and scarring. This recruitment relies upon integrins on the surface of monocytes that regulate their migration and extravasation from the circulation into the wound site, where they differentiate into macrophages. The aim of this study was to determine if inhibiting monocyte extravasation from the circulation into burns would reduce macrophages numbers in burns and lead to reduced inflammation and scar formation. Approach: Scald burns were created on mice and treated with integrin alpha L (αL) function blocking antibody via intravenous delivery day 1 after injury. The effect of inhibiting macrophage recruitment into the burn was assessed using macro- and microscopic wound parameters as well as immunohistochemistry for inflammatory cell markers, cytokines, and collagen deposition. Results: Burn wound-associated macrophages were reduced by 54.7% at day 3 following treatment with integrin αL antibody, with levels returning to normal by day 7. This reduction in macrophages led to a concomitant reduction in inflammatory mediators, including tumor necrosis factor-alpha (TNFα) and Il-10 as well as a reduction in proscarring transforming growth factor beta 1 (TGFβ1). This reduced inflammatory response was also associated with less alpha smooth muscle actin (αSMA) expression and an overall trend toward reduced scar formation with a lower collagen I/III ratio. Innovation: Treatment of burns with integrin αL function blocking antibodies reduces inflammation in burn wounds. Conclusion: These results suggest that reducing macrophage infiltration into burn wounds may lead to a reduced early inflammatory response and less scar formation following burn injury.
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- 2020
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214. Peering into the Cuba phytosanitary black box: An institutional and policy analysis.
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Gomez DF, Adams DC, Cossio RE, de Grammont PC, Messina WA, Royce FS, Galindo-Gonzalez S, Hulcr J, Muiño BL, and Vázquez LL
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- Capacity Building, Cuba, Forecasting, Humans, Trust, United States, Crop Production methods, Crop Protection methods, International Cooperation, Pest Control methods, Plant Diseases prevention & control, Policy Making
- Abstract
To mitigate the movement of non-native organisms with trade, phytosanitary systems have been implemented within and between countries. In some countries such as Cuba, little is known about the within-state plant health system. To facilitate the development of future trade partnership between Cuba and the United States, agencies need to understand the organizational structure and diagnostic capacity of the Cuban Plant Protection System, identify potential synergies between the United States and Cuban systems, and identify steps towards cooperation. This paper fills this critical void by presenting a descriptive analysis of the plant health system in Cuba. Information was integrated from available literature, informal interviews with Cuban experts, and workshops focused on Cuban policies, risk, and potential collaboration attended by Cuban and American experts. We identify the next practical steps in improving cooperation, including building trust and capacity. Mutual understanding of phytosanitary systems will be crucial for the regional economic and environmental stability of a post-embargo United States-Cuban relationship., Competing Interests: The authors have declared that no competing interests exist.
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- 2020
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215. Sperm donation perinatal outcomes in an Australian population cohort.
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Adams D, Fernandez R, Moore V, Willson K, Rumbold A, de Lacey S, Scheil W, and Davies M
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- Adult, Australia, Birth Weight, Cohort Studies, Cryopreservation, Female, Gestational Age, Humans, Infant, Low Birth Weight, Infant, Newborn, Male, Pregnancy, Pregnancy, Twin, Premature Birth epidemiology, Semen Preservation methods, Twins, Pregnancy Outcome, Reproductive Techniques, Assisted, Spermatozoa, Tissue and Organ Procurement
- Abstract
Aim: To compare perinatal outcomes for neonates conceived with donated sperm with those for neonates conceived spontaneously in an Australian population cohort., Methods: Perinatal outcomes for all births in South Australia for the period January 1986-December 2002 were linked with assisted reproductive treatment records to determine those conceived from donated sperm. Birth outcome measures were analyzed using Student's t-test and logistic regression using generalized estimating equations to determine statistical significance., Results: Donor sperm neonates were not significantly different from their spontaneously conceived counterparts in terms of mean birthweight, low birthweight, preterm delivery, small for gestational age, or large for gestational age. They were, however, significantly more likely to be born at lower mean gestational age (P = 0.012), and to have preterm delivery with low birthweight (P = 0.008), when controlling for maternal age, parity, ethnicity, socioeconomic quartile and baby's sex. These associations were not apparent when singletons and twins were considered separately., Conclusion: There was some evidence of compromised perinatal outcomes for donor sperm neonates compared with their spontaneously conceived counterparts, which appeared to be partly attributable to multiplicity., (© 2017 Japan Society of Obstetrics and Gynecology.)
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- 2017
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216. Climate Change and Ecosystem Services Output Efficiency in Southern Loblolly Pine Forests.
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Susaeta A, Adams DC, Carter DR, and Dwivedi P
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- Carbon Sequestration, Florida, Climate Change, Conservation of Natural Resources methods, Ecosystem, Forests, Pinus taeda growth & development
- Abstract
Forests provide myriad ecosystem services that are vital to humanity. With climate change, we expect to see significant changes to forests that will alter the supply of these critical services and affect human well-being. To better understand the impacts of climate change on forest-based ecosystem services, we applied a data envelopment analysis method to assess plot-level efficiency in the provision of ecosystem services in Florida natural loblolly pine (Pinus taeda L.) forests. Using field data for n = 16 loblolly pine forest plots, including inputs such as site index, tree density, age, precipitation, and temperatures for each forest plot, we assessed the relative plot-level production of three ecosystem services: timber, carbon sequestered, and species richness. The results suggested that loblolly pine forests in Florida were largely inefficient in the provision of these ecosystem services under current climatic conditions. Climate change had a small negative impact on the loblolly pine forests efficiency in the provision of ecosystem services. In this context, we discussed the reduction of tree density that may not improve ecosystem services production.
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- 2016
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217. Emerging models for facilitating contact between people genetically related through donor conception: a preliminary analysis and discussion.
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Crawshaw M, Daniels K, Adams D, Bourne K, van Hooff JAP, Kramer W, Pasch L, and Thorn P
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Previous research indicates interest among some donor-conceived people, donors and recipient parents in having contact. Outcomes of such contact appear largely, but not universally, positive. This paper seeks to understand better the characteristics of associated support services. Information gathered using the authors' direct experiences and professional and personal networks in different parts of the world indicates the emergence of four main groupings: (i) publically funded services outside of treatment centers; (ii) services provided by fertility treatment or gamete bank services; (iii) services provided privately by independent psychosocial or legal practitioners; and (4) services organized by offspring and/or recipient parents. Key operational features examined were: (i) who can access such services and when; (ii) what professional standards and funding are in place to provide them; and (iii) how 'matching' and contact processes are managed. Differences appear influenced variously by the needs of those directly affected, local policies, national legislation and the interests of the fertility services which recruit gamete donors and/or deliver donor conception treatments. The paper is intended to inform fuller debate about how best to meet the needs of those seeking information and contact, the implications for the way that fertility treatment and gametes donation services are currently provided and future research needs.
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- 2015
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218. Conceptualising a child-centric paradigm : do we have freedom of choice in donor conception reproduction?
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Adams DH
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- Australia, Child, Child Advocacy legislation & jurisprudence, Female, Humans, Male, Patient Rights legislation & jurisprudence, Personal Autonomy, Reproductive Rights legislation & jurisprudence, Reproductive Techniques, Assisted legislation & jurisprudence, Tissue Donors legislation & jurisprudence, Child Advocacy ethics, Infertility therapy, Patient Rights ethics, Reproduction ethics, Reproductive Rights ethics, Reproductive Techniques, Assisted ethics, Tissue Donors ethics
- Abstract
Since its inception, donor conception practices have been a reproductive choice for the infertile. Past and current practices have the potential to cause significant and lifelong harm to the offspring through loss of kinship, heritage, identity, and family health history, and possibly through introducing physical problems. Legislation and regulation in Australia that specifies that the welfare of the child born as a consequence of donor conception is paramount may therefore be in conflict with the outcomes. Altering the paradigm to a child-centric model, however, impinges on reproductive choice and rights of adults involved in the process. With some lobby groups pushing for increased reproductive choice while others emphasise offspring rights there is a dichotomy of interests that society and legislators need to address. Concepts pertaining to a shift toward a child-centric paradigm are discussed.
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- 2013
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219. Gender specific effects on the actin-remodelling protein Flightless I and TGF-beta1 contribute to impaired wound healing in aged skin.
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Adams DH, Strudwick XL, Kopecki Z, Hooper-Jones JA, Matthaei KI, Campbell HD, Powell BC, and Cowin AJ
- Subjects
- Animals, Carrier Proteins, Cell Nucleus metabolism, Cytoplasm metabolism, Cytoskeletal Proteins biosynthesis, Estradiol pharmacology, Female, Fibroblasts metabolism, Humans, Male, Mice, Mice, Transgenic, Microfilament Proteins, Protein Transport, Sex Factors, Trans-Activators, Up-Regulation, Aging physiology, Cytoskeletal Proteins physiology, Transforming Growth Factor beta1 physiology, Wound Healing physiology
- Abstract
Impaired wound healing in the elderly presents a major clinical challenge. Understanding the cellular mechanisms behind age-related impaired healing is vital for developing new wound therapies. Here we show that the actin-remodelling protein, Flightless I (FliI) is a contributing factor to the poor healing observed in elderly skin and that gender plays a major role in this process. Using young and aged, wild-type and FliI overexpressing mice we found that aging significantly elevated FliI expression in the epidermis and wound matrix. Aging exacerbated the negative effect of FliI on wound repair and wounds in aged FliI transgenic mice were larger with delayed reepithelialisation. When the effect of gender was further analysed, despite increased FliI expression in young and aged male and female mice, female FliI transgenic mice had the most severe wound healing phenotype suggesting that male mice were refractory to FliI gene expression. Of potential importance, males, but not females, up-regulated transforming growth factor-beta1 and this was most pronounced in aged male FliI overexpressing wounds. As FliI also functions as a co-activator of the estrogen nuclear receptor, increasing concentrations of beta-estradiol were added to skin fibroblasts and keratinocytes and significantly enhanced FliI expression and translocation of FliI from the cytoplasm to the nucleus was observed. FliI further inhibited estrogen-mediated collagen I secretion suggesting a mechanism via which FliI may directly affect provisional matrix synthesis. In summary, FliI is a contributing factor to impaired healing and strategies aimed at decreasing FliI levels in elderly skin may improve wound repair.
- Published
- 2008
- Full Text
- View/download PDF
220. Wound healing is defective in mice lacking tetraspanin CD151.
- Author
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Cowin AJ, Adams D, Geary SM, Wright MD, Jones JC, and Ashman LK
- Subjects
- Animals, Antigens, CD analysis, Epithelium physiology, Integrin alpha1 analysis, Integrin alpha6 analysis, Integrin beta1 analysis, Integrin beta4 analysis, Laminin analysis, Laminin chemistry, Male, Mice, Mice, Inbred C57BL, Tetraspanin 24, Antigens, CD physiology, Wound Healing
- Abstract
The tetraspanin CD151 forms complexes in epithelial cell membranes with laminin-binding integrins alpha6beta4, alpha3beta1, and alpha6beta1, and modifies integrin-mediated cell migration in vitro. We demonstrate in this study that CD151 expression is upregulated in a distinct temporal and spatial pattern during wound healing, particularly in the migrating epidermal tongue at the wound edge, suggesting a role for CD151 in keratinocyte migration. We show that healing is significantly impaired in CD151-null mice, with wounds gaping wider at 7 days post-injury. The rate of re-epithelialization of the CD151-null wounds is adversely affected, with significantly less wound area being covered by migrating epidermal cells. Our studies reveal that although laminin levels are similar in wild-type and CD151-null wounds, the organization of the laminin in the basement membrane is impaired. Furthermore, upregulation of alpha6 and beta4 integrin expression is adversely affected in CD151-null mice wounds. In contrast, we find no significant effect of CD151 gene knockout on alpha3 and beta1 integrin expression in wound repair. We suggest that mice lacking the CD151 gene are defective in wound healing, primarily owing to impairment of the re-epithelialization process. This may be due to defective basement membrane formation and epithelial cell adhesion and migration.
- Published
- 2006
- Full Text
- View/download PDF
221. The effect of nasal packing and prednisolone on mucosal healing and reciliation in a sheep model.
- Author
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Robinson S, Adams D, and Wormald PJ
- Subjects
- Adjuvants, Immunologic administration & dosage, Animals, Cilia drug effects, Disease Models, Animal, Eosinophilia physiopathology, Eosinophilia surgery, Hyaluronic Acid administration & dosage, Nasal Mucosa physiopathology, Nasal Mucosa surgery, Rhinitis physiopathology, Sheep, Sinusitis physiopathology, Anti-Inflammatory Agents administration & dosage, Hyaluronic Acid analogs & derivatives, Nasal Mucosa drug effects, Prednisolone administration & dosage, Rhinitis surgery, Sinusitis surgery, Wound Healing drug effects
- Abstract
Statement of Problems: To determine whether topical prednisolone affected sinus mucosal healing in a sheep animal model., Methods of Study: A standardised sheep model with concurrent Oestrus ovus infection was utilised. Following full thickness nasal mucosal injuries, hyaluronic acid packs soaked with prednisolone were applied to one side of the nasal cavity, with hyaluronic acid packs without prednisolone, to the other. At four weekly intervals, for 16 weeks, mucosal biopsies were taken and analysed for epithelial thickness and length, for cilial height and percentage of ciliated mucosa and mucosal inflammation., Results: Eighteen sheep were utilised, with each acting as its own control. At completion of the study there was no statistical difference between the control or treatment group for the percentage of mucosal epithelialisation (mean: 86.5% vs 92.2%), epithelial thickness (mean: 39.7 microns vs 39.3 microns or the percentage of epithelium ciliated (mean: 26.5% vs 30.8%). Furthermore prednisolone had no effect on mucosal inflammation with the control arm mean score of 3.44 (SD .022) and treatment arm mean of 3.77 (SD 0.21)., Conclusion: Hyaluronic acid nasal packs soaked in prednisolone failed to improve the speed of mucosal healing or re-ciliation in the sheep model of eosinophilic rhinosinusitis.
- Published
- 2004
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