293 results on '"Ashish H. Shah"'
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2. Establishment of a new human iPSC cell line (UOMi012-A) from a patient with congenital heart defect who has undergone Fontan procedure
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Niketa Sareen, Abhay Srivastava, Ishika Mittal, Ashish H. Shah, and Sanjiv Dhingra
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Biology (General) ,QH301-705.5 - Abstract
Patients born with complex congenital heart defects, not amenable for surgical repair establishing normal bi-ventricular circulation are palliated with the Fontan Circulation (FC). Here, we report new iPSC line from a patient with tricuspid and pulmonary atresia. The patient underwent series of surgeries leading to completion of Fontan circulation at the age of 13yr., and this line was generated when she was 38yr. old. The exact genetic cause of this patient’s congenital heart defect is unknown, and this line will be used for studying molecular and cellular mechanisms responsible for cardiac dysfunction, along with screening for future potential therapeutic avenues.
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- 2024
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3. Uma Constelação de Acidente Vascular Cerebral e Hipoxemia após Extração do Eletrodo do CDI: Papel do Forame Oval Patente
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Ashish H. Shah, Petra Jenkins, and Heiko Schneider
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Forame Oval Patente ,Acidente Vascular Cerebral ,Hipóxia ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Published
- 2024
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4. Permanent Pacemaker-Mediated Exertional Hypoxemia in a Patient With Ebstein Anomaly
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Ashish H. Shah, MD, Nasir Shaikh, MD, Keivan Alizadeh, MD, Aliasgar Khadem, MD, Clarence Khoo, MD, Robin A. Ducas, MD, and Malek Kass, MD
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Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Patients with Ebstein anomaly are known to have a higher incidence of interatrial communications and shunting of blood and its components through, mainly due to either streaming of tricuspid regurgitation or due to elevated right atrial pressure. Here we describe a case where permanent pacemaker lead kept a patent foramen ovale open leading to right-to-left shunting of blood and exertional hypoxemia. This is the first such case report in the published literature.
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- 2024
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5. The epitranscriptome of high-grade gliomas: a promising therapeutic target with implications from the tumor microenvironment to endogenous retroviruses
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Christian K. Ramsoomair, Michele Ceccarelli, John D. Heiss, and Ashish H. Shah
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Glioblastoma ,Epitranscriptomics ,RNA modifications ,Endogenous retrovirus ,Microenvironment ,Medicine - Abstract
Abstract Glioblastoma (GBM) comprises 45.6% of all primary malignant brain cancers and is one of the most common and aggressive intracranial tumors in adults. Intratumoral heterogeneity with a wide range of proteomic, genetic, and epigenetic dysregulation contributes to treatment resistance and poor prognosis, thus demanding novel therapeutic approaches. To date, numerous clinical trials have been developed to target the proteome and epigenome of high-grade gliomas with promising results. However, studying RNA modifications, or RNA epitranscriptomics, is a new frontier within neuro-oncology. RNA epitranscriptomics was discovered in the 1970s, but in the last decade, the extent of modification of mRNA and various non-coding RNAs has emerged and been implicated in transposable element activation and many other oncogenic processes within the tumor microenvironment. This review provides background information and discusses the therapeutic potential of agents modulating epitranscriptomics in high-grade gliomas. A particular emphasis will be placed on how combination therapies that include immune agents targeting hERV-mediated viral mimicry could improve the treatment of GBM.
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- 2023
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6. Validation of the Emory Risk Score in the Transcatheter Aortic Valve Implantation Population: A Canadian Perspective
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Emily K. Hyde, RN, MN, Karen Throndson, RN, MN, Liane A. Arcinas, MD, Ashish H. Shah, MD, Brett Hiebert, MSc, Michael H. Yamashita, MD, CM, MPH, Donna Lee Samson, BA, Anita Maric, BSc, RQAP-GCP, CTBS, Reid Love, RN, MN, Denise Poettcker, RN, Rakesh C. Arora, MD, PhD, Colette M. Seifer, MD(Hons), and Malek Kass, MD
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Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background: Permanent pacemaker (PPM) implantation may be indicated post-transcatheter aortic valve implantation (TAVI). The Emory Risk Score (ERS) is a validated predictive risk score of the need for a PPM post-TAVI using a balloon-expandable valve. Our objectives were to determine the validity of the ERS in our local TAVI population with both balloon-expandable and self-expanding valves and to identify additional electrocardiographic (ECG) parameters predictive of the need for a PPM post-TAVI. Methods: Retrospective chart and electronic database reviews were performed to collect demographic and procedural information. Two expert readers reviewed all ECGs. Independent factors associated with PPM implantation were examined with multivariable logistic regression via a stepwise selection process with calculation of the area under the receiver operating characteristic curve to assess model discrimination. Results: The overall PPM implantation rate was 11.7%; rates were 9% for the Sapien 3 valves, 10% for the Evolut Pro valves, and 17% for the Evolut R valves. The ERS was found to not be predictive of need for PPM post-TAVI for the entire cohort. Right bundle branch block was the only ERS parameter independently associated with new PPM implant (8.5% vs 25%, odds ratio = 3.59, P = 0.01). No additional ECG parameters met the criteria for statistical significance. Conclusions: The poor predictive value of the ERS in determining the need for a PPM post-TAVI in our patient population suggests that further refinement of a formula (or risk-calculator) is warranted. Identification of a precise risk-calculator is likely to facilitate patient mobilization and reduce inpatient healthcare resource utilization. Résumé: Introduction: L’implantation d’un stimulateur cardiaque permanent (SCP) peut être indiquée après l’implantation valvulaire aortique par cathéter (post-IVAC). L’Emory Risk Score (ERS) est un score de prédiction du risque validé de la nécessité d’un SCP post-IVAC au moyen d’une valve expansible par ballonnet. Nous avions pour objectif de déterminer la validité de l’ERS auprès de notre population ayant eu une IVAC soit par valve expansible par ballonnet ou valve auto-expansible, et de déterminer d’autres paramètres électrocardiographiques (ECG) prédictifs de la nécessité d’un SCP post-IVAC. Méthodes: Nous avons réalisé des revues rétrospectives de dossiers et de bases de données électroniques pour collecter les données démographiques et interventionnelles. Deux experts ont lu et interprété tous les ECG. Les facteurs indépendants associés à l’implantation du SCP ont été examinés en effectuant la régression logistique multivariée par processus de sélection pas-à-pas au moyen du calcul de la surface sous la courbe caractéristique d’efficacité du récepteur afin d’évaluer la discrimination du modèle. Résultats: Le taux global d’implantation d’un SCP était de 11,7 % ; les taux étaient de 9 % pour les valves Sapien 3, de 10 % pour les valves Evolut Pro et de 17 % pour les valves Evolut R. Nous avons observé que l’ERS ne permettait pas de prédire si l’implantation d’un SCP post-IVAC était nécessaire pour la cohorte entière. Le bloc de branche droit était le seul paramètre de l’ERS indépendamment associé à la nouvelle implantation d’un SCP (8,5 % vs 25 %, rapport de cotes = 3,59, P = 0,01). Aucun autre paramètre ECG ne satisfaisait au critère de signification statistique. Conclusions: La faible valeur prédictive de l’ERS à déterminer la nécessité d’un SCP post-IVAC au sein de notre population de patients montre que des améliorations de la formule (ou calculateur de risques) sont justifiées. L’identification d’un calculateur de risques précis devrait favoriser l’adhésion des patients et réduire l’utilisation des ressources en soins de santé en milieu hospitalier.
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- 2022
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7. Human endogenous retrovirus K contributes to a stem cell niche in glioblastoma
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Ashish H. Shah, Sarah R. Rivas, Tara T. Doucet-O’Hare, Vaidya Govindarajan, Catherine DeMarino, Tongguang Wang, Leonel Ampie, Yong Zhang, Yeshavanth Kumar Banasavadi-Siddegowda, Stuart Walbridge, Dragan Maric, Marta Garcia-Montojo, Robert K. Suter, Myoung-Hwa Lee, Kareem A. Zaghloul, Joseph Steiner, Abdel G. Elkahloun, Jay Chandar, Deepa Seetharam, Jelisah Desgraves, Wenxue Li, Kory Johnson, Michael E. Ivan, Ricardo J. Komotar, Mark R. Gilbert, John D. Heiss, and Avindra Nath
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Stem cells ,Virology ,Medicine - Abstract
Human endogenous retroviruses (HERVs) are ancestral viral relics that constitute nearly 8% of the human genome. Although normally silenced, the most recently integrated provirus HERV-K (HML-2) can be reactivated in certain cancers. Here, we report pathological expression of HML-2 in malignant gliomas in both cerebrospinal fluid and tumor tissue that was associated with a cancer stem cell phenotype and poor outcomes. Using single-cell RNA-Seq, we identified glioblastoma cellular populations with elevated HML-2 transcripts in neural progenitor–like cells (NPC-like) that drive cellular plasticity. Using CRISPR interference, we demonstrate that HML-2 critically maintained glioblastoma stemness and tumorigenesis in both glioblastoma neurospheres and intracranial orthotopic murine models. Additionally, we demonstrate that HML-2 critically regulated embryonic stem cell programs in NPC-derived astroglia and altered their 3D cellular morphology by activating the nuclear transcription factor OCT4, which binds to an HML-2–specific long-terminal repeat (LTR5Hs). Moreover, we discovered that some glioblastoma cells formed immature retroviral virions, and inhibiting HML-2 expression with antiretroviral drugs reduced reverse transcriptase activity in the extracellular compartment, tumor viability, and pluripotency. Our results suggest that HML-2 fundamentally contributes to the glioblastoma stem cell niche. Because persistence of glioblastoma stem cells is considered responsible for treatment resistance and recurrence, HML-2 may serve as a unique therapeutic target.
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- 2023
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8. 1-Year Mortality Prediction through Artificial Intelligence Using Hemodynamic Trace Analysis among Patients with ST Elevation Myocardial Infarction
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Seyed Reza Razavi, Tyler Szun, Alexander C. Zaremba, Ashish H. Shah, and Zahra Moussavi
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ST elevation myocardial infarction (STEMI) ,mortality ,arterial pressure ,machine learning ,classification ,Medicine (General) ,R5-920 - Abstract
Background and Objectives: Patients presenting with ST Elevation Myocardial Infarction (STEMI) due to occlusive coronary arteries remain at a higher risk of excess morbidity and mortality despite being treated with primary percutaneous coronary intervention (PPCI). Identifying high-risk patients is prudent so that close monitoring and timely interventions can improve outcomes. Materials and Methods: A cohort of 605 STEMI patients [64.2 ± 13.2 years, 432 (71.41%) males] treated with PPCI were recruited. Their arterial pressure (AP) wave recorded throughout the PPCI procedure was analyzed to extract features to predict 1-year mortality. After denoising and extracting features, we developed two distinct feature selection strategies. The first strategy uses linear discriminant analysis (LDA), and the second employs principal component analysis (PCA), with each method selecting the top five features. Then, three machine learning algorithms were employed: LDA, K-nearest neighbor (KNN), and support vector machine (SVM). Results: The performance of these algorithms, measured by the area under the curve (AUC), ranged from 0.73 to 0.77, with accuracy, specificity, and sensitivity ranging between 68% and 73%. Moreover, we extended the analysis by incorporating demographics, risk factors, and catheterization information. This significantly improved the overall accuracy and specificity to more than 76% while maintaining the same level of sensitivity. This resulted in an AUC greater than 0.80 for most models. Conclusions: Machine learning algorithms analyzing hemodynamic traces in STEMI patients identify high-risk patients at risk of mortality.
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- 2024
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9. The Critical Transfer From Paediatrics to Adult Care in Patients With Congenital Heart Disease: Predictors of Transfer and Retention of Care
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Asem Suliman, MD, MBChB, FRCPC, Ruochen Mao, MD, Brett Hiebert, MSc, James W. Tam, MD, FRCP(C), FACC, Ashish H. Shah, MD, MD-Research (UK), FRCP (UK), Reeni Soni, MD, FRCPC, and Robin A. Ducas, MD, FRCPC
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Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background: Congenital heart disease is the most common congenital birth defect and presents with differing degrees of complexity. Patients require lifelong specialized care. The transfer from paediatric to adult care is a time of risk that may result in lapses or loss of care. A successful transfer from paediatric to adult care is integral for improved patient outcomes. Methods: In this retrospective study, we used the paediatric cardiology database and the electronic records at the adult congenital heart disease (ACHD) clinic to identify referrals and successful transfer between 2008 and 2017. Successful transfer was defined as a patient referred to the ACHD clinic who was seen in the clinic and has ongoing follow-up. We also sought to identify predictors of a successful transfer. Results: A total of 555 patients were referred to the ACHD clinic (2008-2017). Of all patients referred, 62% had a successful transfer and an ongoing specialist care. The remaining 38% either did not show for first appointments or missed 3 consecutive visits. Independent predictors of a successful transfer were the presence of moderate or complex ACHD, residing within the city limits, older age at the time of referral, and a more recent year of referral. Conclusions: Over one-third of patients did not achieve successful transfer, namely attendance at first clinic visit plus early retention in care. We were able to identify several variables that predict successful transfer. Further research is required to identify interventions that can be implemented to reduce lapses in patient care. Résumé: Contexte: La cardiopathie congénitale, qui est la malformation congénitale la plus courante, présente divers degrés de complexité. Les patients qui en sont atteints nécessitent des soins spécialisés tout au long de leur vie. La transition entre les soins pédiatriques et les soins pour adultes est un moment risqué qui peut occasionner un relâchement ou une interruption des soins. Le succès de ce transfert des soins pédiatriques aux soins pour adultes est essentiel à l’amélioration des résultats pour les patients. Méthodologie: Pour cette étude rétrospective, nous avons utilisé la base de données de cardiologie pédiatrique et les dossiers électroniques de la clinique de cardiopathie congénitale de l’adulte (CCA) pour relever les cas de réorientation et de transfert réussi survenus entre 2008 et 2017. On entendait par « transfert réussi » le fait qu’un patient orienté vers la clinique de CCA ait été vu en consultation à la clinique et qu’il fasse l’objet d’un suivi. Nous avons aussi cherché à identifier les facteurs prédictifs d’un transfert réussi. Résultats: Au total, 555 patients ont été orientés à la clinique de CCA entre 2008 et 2017. Chez 62 % de tous ces patients orientés, le transfert a été réussi et les soins spécialisés ont été poursuivis. Les patients représentant les 38 % restants ne se sont pas présentés soit à leur premier rendez-vous, soit à trois visites subséquentes consécutives. Les facteurs prédictifs indépendants du transfert réussi étaient la présence d’une CCA modérée ou complexe, le fait de résider à l’intérieur des limites de la ville, un âge plus avancé au moment de la réorientation et le caractère plus récent de la réorientation. Conclusions: Chez plus du tiers des patients, le transfert n’a pas été réussi, c’est-à-dire que ces patients ne se sont pas présentés à leur première visite à la clinique et que leurs soins n’ont pas été poursuivis rapidement après le transfert. Nous avons pu cerner plusieurs variables qui prédisent les transferts réussis. D’autres recherches seront nécessaires pour trouver les interventions à mettre en œuvre pour réduire les interruptions dans les soins aux patients.
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- 2022
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10. Differential expression of an endogenous retroviral element [HERV-K(HML-6)] is associated with reduced survival in glioblastoma patients
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Ashish H. Shah, Vaidya Govindarajan, Tara T. Doucet-O’Hare, Sarah Rivas, Leo Ampie, Catherine DeMarino, Yeshavanth Kumar Banasavadi-Siddegowda, Yong Zhang, Kory R. Johnson, Fahad Almsned, Mark R. Gilbert, John D. Heiss, and Avindra Nath
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Medicine ,Science - Abstract
Abstract Comprising approximately 8% of our genome, Human Endogenous RetroViruses (HERVs) represent a class of germline retroviral infections that are regulated through epigenetic modifications. In cancer cells, which often have epigenetic dysregulation, HERVs have been implicated as potential oncogenic drivers. However, their role in gliomas is not known. Given the link between HERV expression in cancer cell lines and the distinct epigenetic dysregulation in gliomas, we utilized a tailored bioinformatic pipeline to characterize and validate the glioma retrotranscriptome and correlate HERV expression with locus-specific epigenetic modifications. We identified robust overexpression of multiple HERVs in our cell lines, including a retroviral transcript, HML-6, at 19q13.43b in glioblastoma cells. HERV expression inversely correlated with loci-specific DNA methylation. HML-6 contains an intact open reading frame encoding a small envelope protein, ERVK3-1. Increased expression of ERVK3-1 in GBM patients is associated with a poor prognosis independent of IDH-mutational status. Our results suggest that not only is HML-6 uniquely overexpressed in highly invasive cell lines and tissue samples, but also its gene product, ERVK3-1, may be associated with reduced survival in GBM patients. These results may have implications for both the tumor biology of GBM and the role of ERVK3-1 as a potential therapeutic target.
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- 2022
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11. Population and Resource Utilization Among Patients With Adult Congenital Heart Disease: A Snapshot View of a Moderate-Size Canadian Regional Centre
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Luis A. Castro, BSc, Ashish H. Shah, MD, MD-Research (UK), FRCP, Brett Hiebert, BSc, MSc, James W. Tam, MD, FRCPC, FACC, PG Cert (Palliative Care), and Robin A. Ducas, BSc, MD, FRCPC
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Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background: Health care resource utilization for patients with adult congenital heart disease (ACHD) has not been well characterized outside of large Canadian specialized regional centres. We sought to describe the ACHD population and resource utilization patterns seen in a medium regional Canadian centre providing specialized ACHD care. Methods: A cross-sectional retrospective study was done from a sample of patients seen in 2018 at the ACHD clinic in Manitoba, Canada. Demographic data were collected along with cardiac anatomy and repair type. Health care resource utilization, clinic visits, hospital admissions, unexpected hospital presentations, and cardiac interventions were measured over a 5-year period. Results: A random sample of 262 patients was selected from our specialized ACHD clinic. Mean age was 33.5 (±13.7) years; 48% of the population was female, and >50% resided within the major city limits. A total of 21% of the population had simple anatomy, 44% had moderate anatomy, and 35% had complex anatomy. The most commonly used imaging modality was echocardiography, followed by cardiac magnetic resonance imaging, with more frequent imaging done in patients with complex anatomy. Unexpected hospital encounters occurred at a rate of 16 per 100 person-years. Total inpatient hospital days occurred at a rate of 33 per 100 person-years, and visits to the congenital clinic occurred at a rate of 90 per 100 person-years. Conclusions: Health care resource utilization appears to be highest in older adults and those with more complex ACHD anatomy. As the overall cohort of adults with ACHD continues to age, resource needs are likely to increase. Résumé: Contexte: L'utilisation des ressources de santé à l'extérieur des grands centres spécialisés régionaux au Canada n'a pas été bien caractérisée pour les patients atteints de cardiopathie congénitale de l'adulte (CCA). Nous avons cherché à décrire la population atteinte de CCA et les schémas d'utilisation des ressources observés dans un centre régional canadien de taille moyenne fournissant des soins spécialisés en CCA. Méthodologie: Une étude transversale rétrospective a été réalisée à partir d'un échantillon de patients rencontrés en 2018 dans une clinique spécialisée en CCA du Manitoba, au Canada. Des données démographiques ont été recueillies de même que des données sur l'anatomie cardiaque et le type de réparation. L'utilisation des ressources de soins de santé, les visites à la clinique, les admissions à l'hôpital, les consultions hospitalières imprévues et les interventions cardiaques ont été mesurées sur une période de cinq ans. Résultats: Un échantillon aléatoire de 262 patients a été sélectionné dans notre clinique spécialisée en CCA. L’âge moyen des patients était de 33,5 (±13,7) ans; 48 % de la population était de sexe féminin et plus de 50 % résidait dans les limites d'une grande ville. Au total, 21 % de la population présentait une anatomie cardiaque simple, 44 % une anatomie modérément complexe et 35 % une anatomie complexe. La technique d'imagerie la plus utilisée était l’échocardiographie, suivie de l'imagerie par résonance magnétique cardiaque, l'imagerie étant plus fréquente chez les patients présentant une anatomie cardiaque complexe. Le taux de consultations hospitalières imprévues était de 16 pour 100 années-patient. Le nombre total de jours d'hospitalisation était de 33 pour 100 années-patient, et le nombre de visites à la clinique spécialisée en CCA était de 90 pour 100 années-patient. Conclusions: L'utilisation des ressources de soins de santé semble être plus élevée chez les adultes plus âgés et chez ceux qui présentent une anatomie plus complexe liée à la CCA. Puisque l'ensemble de la cohorte d'adultes atteints de CCA continue de vieillir, les besoins en ressources sont susceptibles d'augmenter.
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- 2021
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12. Oncolytic Virotherapy for High-Grade Glioma and Current Evidence and Factors to Consider for Incorporation into Clinical Practice
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Sauson Soldozy, Daniel G. Eichberg, Alexis A. Morell, Evan Luther, Victor M. Lu, Dominique M. O. Higgins, Nitesh V. Patel, Ashish H. Shah, Simon J. Hanft, Ricardo J. Komotar, and Michael E. Ivan
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oncolytic virotherapy ,glioma ,virus therapy ,glioblastoma ,brain tumor ,Medicine - Abstract
Brain tumor incidence is on the rise, and glioblastoma comprises the majority of primary tumors. Despite maximal safe resection and adjuvant chemoradiation, median survival for high-grade glioma remains poor. For this reason, it is important to develop and incorporate new treatment strategies. Oncolytic virotherapy has emerged as a viable new therapeutic entity to fill this gap. Preclinical research has shown oncolytic virotherapy to be a robust and effective treatment option for brain tumors, and clinical trials for both adult and pediatric high-grade glioma are underway. The unique and protected environment of the nervous system, in part due to the blood–brain barrier, prevents traditional systemic therapies from achieving adequate penetration. Brain tumors are also heterogenous in nature due to their diverse molecular profiles, further complicating systemic treatment efforts. Oncolytic viruses may serve to fill this gap in brain tumor treatment given their amenability to genetic modification and ability to target unique tumor epitopes. In addition, direct inoculation of the oncolytic virus agent to the tumor bed following surgical resection absolves risk of systemic side effects and ensures adequate delivery. As virotherapy transitions from bench to bedside, it is important to discuss factors to make this transition more seamless. In this article, we describe the current clinical evidence as it pertains to oncolytic virotherapy and the treatment of brain tumors as well as factors to consider for its incorporation into neurosurgical workflow.
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- 2023
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13. Cardiac failure and pulmonary hypertension secondary to renal arteriovenous malformation: a case report
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Laura J. Albak, Ashish H. Shah, and James W. Tam
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Renal arteriovenous malformation ,Pulmonary hypertension ,Medicine - Abstract
Abstract Background Heart failure is usually associated with a low-cardiac-output state; however, a minority of these patients are characterized by a high-output cardiac state, described as a cardiac index of > 4 L/minute/m2. Usually such circulation is associated with low systemic vascular resistance or arteriovenous malformation (AVM), resulting in depressurized circulation and a high-output cardiac state. Treating physicians should be cognizant of such pathology when investigating patients with heart failure. As an example, renal arteriovenous malformations are a rare vascular phenomena that are typically the result of iatrogenic, traumatic or congenital etiology. Generally, non-salient, most are detected as an incidental finding. Case presentation A 75-year-old Afro-Caribbean man with multiple comorbidities presented to the emergency department with a 6-month history of heart failure symptoms. Cardiac catheterization demonstrated a giant right renal AVM leading to a significant left-to-right, post-tricuspid shunt that was treated with transcatheter coiling. Conclusions We present this case to emphasize the significance of a detailed workup in a patient with heart failure symptoms.
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- 2021
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14. The Role of HERV-K in Cancer Stemness
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Sarah R. Rivas, Mynor J. Mendez Valdez, Vaidya Govindarajan, Deepa Seetharam, Tara T. Doucet-O’Hare, John D. Heiss, and Ashish H. Shah
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human endogenous retroviruses ,HERV-K ,stem cell phenotypes ,carcinogenesis ,Microbiology ,QR1-502 - Abstract
Human endogenous retrovirus-K (HERV-K) is the most recently integrated retrovirus in the human genome, with implications for multiple disorders, including cancer. Although typically transcriptionally silenced in normal adult cells, dysregulation of HERV-K (HML-2) elements has been observed in cancer, including breast, germ cell tumors, pancreatic, melanoma, and brain cancer. While multiple methods of carcinogenesis have been proposed, here we discuss the role of HERV-K (HML-2) in the promotion and maintenance of the stem-cell in cancer. Aberrant expression of HERV-K has been shown to promote expression of stem cell markers and promote dedifferentiation. In this review, we discuss HERV-K (HML-2) as a potential therapeutic target based on evidence that some tumors depend on the expression of its proteins for survival.
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- 2022
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15. Neurosurgical Clinical Trials for Glioblastoma: Current and Future Directions
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Ashish H. Shah and John D. Heiss
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glioblastoma ,brain mapping ,temozolomide ,radiotherapy ,connection-enhanced delivery ,immunotherapy ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
The mainstays of glioblastoma treatment, maximal safe resection, radiotherapy preserving neurological function, and temozolomide (TMZ) chemotherapy have not changed for the past 17 years despite significant advances in the understanding of the genetics and molecular biology of glioblastoma. This review highlights the neurosurgical foundation for glioblastoma therapy. Here, we review the neurosurgeon’s role in several new and clinically-approved treatments for glioblastoma. We describe delivery techniques such as blood–brain barrier disruption and convection-enhanced delivery (CED) that may be used to deliver therapeutic agents to tumor tissue in higher concentrations than oral or intravenous delivery. We mention pivotal clinical trials of immunotherapy for glioblastoma and explain their outcomes. Finally, we take a glimpse at ongoing clinical trials and promising translational studies to predict ways that new therapies may improve the prognosis of patients with glioblastoma.
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- 2022
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16. Oncolytic Virotherapy for Melanoma Brain Metastases, a Potential New Treatment Paradigm?
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Sauson Soldozy, Kathleen M. Mulligan, David X. Zheng, Melissa A. Levoska, Christopher R. Cullison, Turki Elarjani, Daniel G. Eichberg, Leonel E. Ampie, Ashish H. Shah, Kaan Yağmurlu, Mark E. Shaffrey, Jeffrey F. Scott, and Ricardo J. Komotar
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oncolytic virotherapy ,melanoma ,brain metastases ,neuroimmunology ,neuro-oncology ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Introduction: Melanoma brain metastases remain a devastating disease process with poor prognosis. Recently, there has been a surge in studies demonstrating the efficacy of oncolytic virotherapy for brain tumor treatment. Given their specificity and amenability to genetic modification, the authors explore the possible role of oncolytic virotherapy as a potential treatment option for patients with melanoma brain metastases. Methods: A comprehensive literature review including both preclinical and clinical evidence of oncolytic virotherapy for the treatment of melanoma brain metastasis was performed. Results: Oncolytic virotherapy, specifically T-VEC (Imlygic™), was approved for the treatment of melanoma in 2015. Recent clinical trials demonstrate promising anti-tumor changes in patients who have received T-VEC; however, there is little evidence for its use in metastatic brain disease based on the existing literature. To date, only two single cases utilizing virotherapy in patients with metastatic brain melanoma have been reported, specifically in patients with treatment refractory disease. Currently, there is not sufficient data to support the use of T-VEC or other viruses for intracranial metastatic melanoma. In developing a virotherapy treatment paradigm for melanoma brain metastases, several factors must be considered, including route of administration, need to bypass the blood–brain barrier, viral tumor infectivity, and risk of adverse events. Conclusions: Evidence for oncolytic virotherapy treatment of melanoma is limited primarily to T-VEC, with a noticeable paucity of data in the literature with respect to brain tumor metastasis. Given the promising findings of virotherapy for other brain tumor types, oncolytic virotherapy has great potential to offer benefits to patients afflicted with melanoma brain metastases and warrants further investigation.
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- 2021
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17. Presurgical thalamocortical connectivity is associated with response to vagus nerve stimulation in children with intractable epilepsy
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George M. Ibrahim, Priya Sharma, Ann Hyslop, Magno R. Guillen, Benjamin R. Morgan, Simeon Wong, Taylor J. Abel, Lior Elkaim, Iahn Cajigas, Ashish H. Shah, Aria Fallah, Alexander G. Weil, Nolan Altman, Byron Bernal, Santiago Medina, Elysa Widjaja, Prasanna Jayakar, John Ragheb, and Sanjiv Bhatia
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Computer applications to medicine. Medical informatics ,R858-859.7 ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Although chronic vagus nerve stimulation (VNS) is an established treatment for medically-intractable childhood epilepsy, there is considerable heterogeneity in seizure response and little data are available to pre-operatively identify patients who may benefit from treatment. Since the therapeutic effect of VNS may be mediated by afferent projections to the thalamus, we tested the hypothesis that intrinsic thalamocortical connectivity is associated with seizure response following chronic VNS in children with epilepsy. Twenty-one children (ages 5–21years) with medically-intractable epilepsy underwent resting-state fMRI prior to implantation of VNS. Ten received sedation, while 11 did not. Whole brain connectivity to thalamic regions of interest was performed. Multivariate generalized linear models were used to correlate resting-state data with seizure outcomes, while adjusting for age and sedation status. A supervised support vector machine (SVM) algorithm was used to classify response to chronic VNS on the basis of intrinsic connectivity. Of the 21 subjects, 11 (52%) had 50% or greater improvement in seizure control after VNS. Enhanced connectivity of the thalami to the anterior cingulate cortex (ACC) and left insula was associated with greater VNS efficacy. Within our test cohort, SVM correctly classified response to chronic VNS with 86% accuracy. In an external cohort of 8 children, the predictive model correctly classified the seizure response with 88% accuracy. We find that enhanced intrinsic connectivity within thalamocortical circuitry is associated with seizure response following VNS. These results encourage the study of intrinsic connectivity to inform neural network-based, personalized treatment decisions for children with intractable epilepsy. Keywords: Functional connectivity, Intrinsic connectivity networks, Resting-state fMRI, Low frequency neural oscillations, VNS
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- 2017
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18. Management of immune thrombocytic purpura and acute coronary syndrome: A double-edged sword!
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Ashish H. Shah, Richard A. Anderson, Ali Raza Khan, and Timothy D. Kinnaird
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Immune thrombocytopenic purpura ,Coronary angioplasty ,Stent thrombosis ,Optical coherence tomography ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Treating patients known to have immune thrombocytopenic purpura (ITP) presenting with acute coronary syndrome (ACS) pose challenges, especially if they undergo percutaneous coronary intervention and stenting, as they require certain period of dual anti-platelet medication based up on the type of stent been deployed. Co-existence of therapies to increase platelet number as well as anti-platelet efficacy at the same time appears contradictory; imbalance in antagonistic treatment approach of increasing platelet number to treat ITP and inhibiting their activity to treat ACS can result in life threatening complications.
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- 2016
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19. Investigating the therapeutic role and molecular biology of curcumin as a treatment for glioblastoma
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Gregor A. Rodriguez, Ashish H. Shah, Zachary C. Gersey, Sumedh S. Shah, Amade Bregy, Ricardo J. Komotar, and Regina M. Graham
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Objectives: Despite the aggressive standard of care for patients with glioblastoma multiforme, survival rates typically do not exceed 2 years. Therefore, current research is focusing on discovering new therapeutics or rediscovering older medications that may increase the overall survival of patients with glioblastoma. Curcumin, a component of the Indian natural spice, turmeric, also known for its antioxidant and anti-inflammatory properties, has been found to be an effective inhibitor of proliferation and inducer of apoptosis in many cancers. The goal of this study was to investigate the expanded utility of curcumin as an antiglioma agent. Methods: Using the PubMed MeSH database, we conducted a systematic review of the literature to include pertinent studies on the growth inhibitory effects of curcumin on glioblastoma cell lines based on Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Results: A total of 19 in vitro and five in vivo studies were analyzed. All of the studies indicated that curcumin decreased glioblastoma cell viability through various pathways (i.e. decrease in prosurvival proteins such as nuclear factor κB, activator protein 1, and phosphoinositide 3 kinase, and upregulation of apoptotic pathways like p21, p53, and executor caspase 3). Curcumin treatment also increased animal survival compared with control groups. Conclusions: Curcumin inhibits proliferation and induces apoptosis in certain subpopulations of glioblastoma tumors, and its ability to target multiple signaling pathways involved in cell death makes it an attractive therapeutic agent. As such, it should be considered as a potent anticancer treatment. Further experiments are warranted to elucidate the use of a bioavailable form of curcumin in clinical trials.
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- 2016
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20. Ticagrelor as Compared to Clopidogrel Following Percutaneous Coronary Intervention for Acute Coronary Syndrome
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Evan J. Wiens, Silvia J. Leon, Reid Whitlock, Navdeep Tangri, and Ashish H. Shah
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Cardiology and Cardiovascular Medicine - Published
- 2023
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21. Patient-Reported Outcomes After Tetralogy of Fallot Repair
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Adrienne H. Kovacs, Gerald Lebovic, Stavroula Raptis, Samuel Blais, Christopher A. Caldarone, Nagib Dahdah, Frédéric Dallaire, Christian Drolet, Jasmine Grewal, Camille L. Hancock Friesen, Edward Hickey, Gauri Rani Karur, Paul Khairy, Benedetta Leonardi, Michelle Keir, Brian W. McCrindle, Syed Najaf Nadeem, Ming-Yen Ng, Ashish H. Shah, Edythe B. Tham, Judith Therrien, Andrew E. Warren, Isabelle F. Vonder Muhll, Alexander Van de Bruaene, Kenichiro Yamamura, Michael E. Farkouh, and Rachel M. Wald
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Cardiology and Cardiovascular Medicine - Published
- 2023
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22. Surgically Treated Brain Metastases from Uterine Origin: A Case Series and Systematic Review
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Tiffany Eatz, Adam Levy, Martín Merenzon, Lauren Bystrom, Katherine Berry, Alexis Morell, Shovan Bhatia, Lekhaj Daggubati, Dominique Higgins, Matthew Schlumbrecht, Ricardo Jorge Komotar, Ashish H. Shah, and Michael E. Ivan
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Surgery ,Neurology (clinical) - Published
- 2023
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23. Development of an enhanced recovery after laser ablation surgery protocol: a preliminary analysis
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Adam S Levy, Martin A Merenzon, Tiffany Eatz, Alexis A Morell, Daniel G Eichberg, Marc J Bloom, Ashish H Shah, Ricardo J Komotar, and Michael E Ivan
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Medicine (miscellaneous) - Abstract
Background Enhanced recovery after surgery (ERAS) programs are a model of care that aim to improve patient outcomes, reduce complications, and facilitate recovery while reducing healthcare-associated costs and admission length. While such programs have been developed in other surgical subspecialties, there have yet to be guidelines published specifically for laser interstitial thermal therapy (LITT). Here we describe the first multidisciplinary ERAS preliminary protocol for LITT for the treatment of brain tumors. Methods Between the years 2013 and 2021, 184 adult patients consecutively treated with LITT at our single institution were retrospectively analyzed. During this time, a series of pre, intra, and postoperative adjustments were made to the admission course and surgical/anesthesia workflow with the goal of improving recovery and admission length. Results The mean age at surgery was 60.7 years with a median preoperative Karnofsky performance score of 90 ± 13. Lesions were most commonly metastases (50%) and high-grade gliomas (37%). The mean length of stay was 2.4 days, with the average patient being discharged 1.2 days after surgery. There was an overall readmission rate of 8.7% with a LITT-specific readmission rate of 2.2%. Three of 184 patients required repeat intervention in the perioperative period, and there was one perioperative mortality. Conclusions This preliminary study shows the proposed LITT ERAS protocol to be a safe means of discharging patients on postoperative day 1 while preserving outcomes. Although future prospective work is needed to validate this protocol, results show the ERAS approach to be promising for LITT.
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- 2023
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24. Radical supramaximal resection for newly diagnosed left-sided eloquent glioblastoma: safety and improved survival over gross-total resection
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Long, Di, Ashish H, Shah, Anil, Mahavadi, Daniel G, Eichberg, Raghuram, Reddy, Alexander D, Sanjurjo, Alexis A, Morell, Victor M, Lu, Leonel, Ampie, Evan M, Luther, Ricardo J, Komotar, and Michael E, Ivan
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Brain Neoplasms ,Humans ,General Medicine ,Glioblastoma ,Craniotomy ,Neurosurgical Procedures ,Retrospective Studies - Abstract
OBJECTIVE Supramaximal resection (SMR) has arisen as a possible surrogate to gross-total resection (GTR) to improve survival in newly diagnosed glioblastoma (nGBM). However, SMR has traditionally been limited to noneloquent regions and its feasibility in eloquent nGBM remains unclear. The authors conducted a retrospective multivariate propensity-matched analysis comparing survival outcomes for patients with left-sided eloquent nGBM undergoing SMR versus GTR. METHODS A retrospective review was performed of all patients at our institution who underwent SMR or GTR of a left-sided eloquent nGBM during the period from 2011 to 2020. All patients underwent some form of preoperative or intraoperative functional mapping and underwent awake or asleep craniotomy (craniotomy under general anesthesia); however, awake craniotomy was performed in the majority of patients and the focus of the study was SMR achieved via awake craniotomy and functional mapping with lesionectomy and additional peritumoral fluid attenuated inversion recovery (FLAIR) resection. Propensity scores were generated controlling for age, tumor location, and preoperative Karnofsky Performance Status (KPS) score with the nearest-neighbor algorithm. RESULTS A total of 102 patients (48 SMR, 54 GTR) were included in this study. The median overall survival (OS) and progression-free survival (PFS) for patients receiving SMR were 22.9 and 5.1 months, respectively. Propensity matching resulted in a final cohort of 27 SMR versus 27 GTR patients. SMR conferred improved OS (21.55 vs 15.49 months, p = 0.0098) and PFS (4.51 vs 3.59 months, p = 0.041) compared to GTR. There was no significant difference in postoperative complication rates or KPS score in SMR compared with GTR patients (p = 0.236 and p = 0.736, respectively). In patients receiving SMR, improved OS and PFS showed a dose-dependent relationship with extent of FLAIR resection (EOFR) on log-rank test for trend (p < 0.001). CONCLUSIONS SMR by means of awake craniotomy with functional mapping for left-sided eloquent nGBM is safe and confers a survival benefit compared to GTR obtained with lesionectomy alone while preserving postoperative neurological integrity. When tolerated, greater EOFR with SMR may be associated with improved survival.
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- 2023
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25. Detection of SARS-CoV-2 Nucleocapsid and Microvascular Disease in the Brain
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Catherine DeMarino, Myoung-Hwa Lee, Maria Cowen, Joseph P. Steiner, Sara Inati, Ashish H. Shah, Kareem A. Zaghloul, and Avindra Nath
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Neurology (clinical) - Abstract
Background and ObjectivesSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection can cause a wide range of neurologic complications; however, its neuropenetrance during the acute phase of the illness is unknown.MethodsExtracellular vesicles were isolated from brain biopsy tissue from a patient undergoing epilepsy surgery using ultracentrifugation and analyzed by Western blot and qPCR for the presence of virus protein and RNA, respectively. Biopsy tissue was assessed by immunohistochemistry for the presence of microvascular damage and compared with 3 other non-COVID surgical epilepsy brain tissues.ResultsWe demonstrate the presence of viral nucleocapsid protein in extracellular vesicles and microvascular disease in the brain of a patient undergoing epilepsy surgery shortly after SARS-CoV-2 infection. Endothelial cell activation was indicated by increased levels of platelet endothelial cell adhesion molecule-1 and was associated with fibrinogen leakage and immune cell infiltration in the biopsy tissue as compared with control non-COVID surgical epilepsy brain tissues.DiscussionDespite the lack of evidence of viral replication within the brain, the presence of the nucleocapsid protein was associated with disease-specific endothelial cell activation, fibrinogen leakage, and immune cell infiltration.
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- 2022
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26. A Pan-Canadian Survey of Cardiogenic Shock Management: A Report From the Canadian Cardiovascular Research Collaboratory (C3) Cardiogenic Shock Working Group
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Derek Y.F. So, Akshay Bagai, Sean van Diepen, Christopher B. Fordyce, Shuangbo Liu, Robert Avram, Juan Russo, Ashish H. Shah, Jean-Francois Tanguay, Shaun G. Goodman, and Adriana Luk
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Canada ,Extracorporeal Membrane Oxygenation ,Shock, Cardiogenic ,Humans ,Heart ,Cardiology and Cardiovascular Medicine ,Cardiovascular System - Published
- 2022
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27. Brain Metastasis from Pancreatic Cancer: Our Experience and Systematic Review
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Frank A. De Stefano, Alexis Morell, Katya Marks, Sophia Fernandez, Grace Smith, Timothy Mayo, Martin Merenzon, Ashish H. Shah, Daniel G. Eichberg, Evan Luther, Michael E. Ivan, and Ricardo J. Komotar
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Pancreatic Neoplasms ,Brain Neoplasms ,Humans ,Surgery ,Neurology (clinical) ,Prognosis ,Retrospective Studies - Abstract
To systematically review existing literature on the neurosurgical management and outcomes of brain metastasis from pancreatic cancer in comparison with our institutional experience of this patient cohort.Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, a systematic literature review was performed using PubMed, Ovid Embase, Scopus, and Web of Science databases from date of database inception to March 2022. Studies were selected based on predetermined inclusion and exclusion criteria. Simultaneously, a retrospective analysis was conducted of patients who underwent neurosurgical evaluation and treatment for intracranial metastatic lesions from pancreatic origin at a single institution.The original literature search yielded 292 articles, of which 17 studies comprising 23 patients with brain metastases of pancreatic origin were ultimately selected. Median overall survival from primary diagnosis of pancreatic cancer was 22 months (interquartile range: 3-84) and 3 months (interquartile range: 1-36) after diagnosis of brain metastasis. In our institutional cohort, 4 patients were identified with a median overall survival of 30.5 months (interquartile range: 2-108). Our institutional cohort experienced a prolonged median overall survival (3 months vs. 30.5 months, P = 0.03) compared with the literature.Brain metastasis from pancreatic cancer is rare and associated with a fatal outcome. However, based on the data presented in this review, patient-specific and treatment-related factors could signal better prognosis. Further studies are needed to elucidate multimodal therapy and survival to suggest a more personalized decision-making process.
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- 2022
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28. Clinical Applications of High-Sensitivity Troponin Testing: From Diagnosis to Prognosis
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Evan J. Wiens, Meagan Deviaene, and Ashish H. Shah
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Troponin T ,Humans ,Prognosis ,Cardiology and Cardiovascular Medicine ,Sensitivity and Specificity ,Biomarkers ,Troponin - Published
- 2022
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29. Safety of the utilization of telemedicine for brain tumor neurosurgery follow-up
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Alexis A Morell, Nitesh V Patel, Tiffany A Eatz, Adam S Levy, Daniel G Eichberg, Ashish H Shah, Evan Luther, Victor M Lu, Michael Kader, Dominique M O Higgins, Michael E Ivan, and Ricardo J Komotar
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Medicine (miscellaneous) - Abstract
Background There is a need to evaluate the outcomes of patients who underwent brain tumor surgery with subsequent telemedicine or in-person follow-up during the COVID-19 pandemic. Methods We retrospectively included all patients who underwent surgery for brain tumor resection by a single neurosurgeon at our Institution from the beginning of the COVID-19 pandemic restrictions (March 2020) to August 2021. Outcomes were assessed by stratifying the patients using their preference for follow-up method (telemedicine or in-person). Results Three-hundred and eighteen (318) brain tumor patients who were included. The follow-up method of choice was telemedicine (TM) in 185 patients (58.17%), and in-person (IP) consults in 133 patients. We found that patients followed by TM lived significantly farther, with a median of 36.34 miles, compared to a median of 22.23 miles in the IP cohort (P = .0025). We found no statistical difference between the TM and the IP group, when comparing visits to the emergency department (ED) within 30 days after surgery (7.3% vs 6.01%, P = .72). Readmission rates, wound infections, and 30-day mortality were similar in both cohorts. These findings were also consistent after matching cohorts using a propensity score. The percentage of telemedicine follow-up consults was higher in the first semester (73.17%) of the COVID-19 pandemic, compared to the second (46.21%), and third semesters (47.86%). Conclusions Telehealth follow-up alternatives may be safely offered to patients after brain tumor surgery, thereby reducing patient burden in those with longer distances to the hospital or special situations as the COVID-19 pandemic.
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- 2022
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30. Glioblastoma multiforme in patients with human immunodeficiency virus: an integrated review and analysis
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Mynor J. Mendez Valdez, Victor M. Lu, Enoch Kim, Sarah R. Rivas, Vaidya Govindarajan, Michael Ivan, Ricardo Komotar, Avindra Nath, John D. Heiss, and Ashish H. Shah
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Cancer Research ,Neurology ,Oncology ,Neurology (clinical) - Published
- 2022
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31. Multi-vessel spontaneous coronary artery dissections
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David C. Nelson, Basem Elbarouni, and Ashish H. Shah
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General Medicine ,Cardiology and Cardiovascular Medicine - Published
- 2023
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32. Towards the definition of progressive disease in brain metastasis treated with Laser Ablation: an evidence-based study
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Martin A. Merenzon, Adam S. Levy, Shovan Bhatia, Cameron Rivera, Alexis A. Morell, Alexa Semonche, Lekhaj C. Daggubati, Evan Luther, Ricardo J. Komotar, Ashish H. Shah, and Michael E. Ivan
- Abstract
Purpose The postoperative period after laser interstitial thermal therapy (LITT) is marked by a temporary increase in volume, which can impact the accuracy of radiographic assessment. The current criteria for progressive disease (PD) suggests that a 20% increase in size of brain metastasis (BM) assessed in 6–12 weeks intervals should be considered as local progression (LP). However, there is no agreement on how LP should be defined in this context. In this study, we aimed to statistically analyzed which variations in tumor volume were associated with LP. Methods We analyzed 42 BM that underwent LITT between 2013–2022. For this study, LP was defined following radiographic features, while PD with a combined clinical and radiographic criterion. A ROC curve was generated to evaluate volume change as a predictor of LP and find the optimal cutoff point. A logistic regression analysis and Kaplan Meier curves were performed to assess the impact of various clinical variables on LP. Results Out of 42 lesions, 12 (26.7%) had LP. An increase in volume of 25.6% from baseline within 120–180 days after LITT presented a 70% sensitivity and 88.9% specificity for predicting LP (AUC: 0.78, p = 0.0412). The multivariate analysis showed a 25% increase in volume between 120–180 days as a negative predictive factor (p = 0.007). Volumetric changes within 60–90 days after LITT did not predict LP (AUC: 0.57; p = 0.612). Conclusion Volume changes within the first 120 days after the procedure are not independent indicators of LP of metastatic brain lesions treated with LITT.
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- 2023
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33. Exertional Dyspnea in a Young Patient
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Ashish H. Shah, Nasir Shaikh, and Malek Kass
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Cardiology and Cardiovascular Medicine - Published
- 2023
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34. Traumatic brain injury and subsequent brain tumor development: a systematic review of the literature
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Darsh S. Shah, Akshat Sanan, Alexis A. Morell, Daniel G. Eichberg, Ashish H. Shah, Evan Luther, Victor M. Lu, Turki Elarjani, Dominic M. O. Higgins, Nitesh V. Patel, Jonathan R. Jagid, Michael E. Ivan, and Ricardo J. Komotar
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Surgery ,Neurology (clinical) ,General Medicine - Published
- 2022
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35. Invasive Hemodynamic Evaluation of the Fontan Circulation: Current Day Practice and Limitations
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Ashish H. Shah, Shakeel A. Qureshi, and Richard A. Krasuski
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Cardiology and Cardiovascular Medicine - Published
- 2022
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36. Trends in Leadership Among Neurosurgical Oncology Fellowships
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David P. Matichak, Adam S. Levy, Nathan Vanderveer-Harris, Henry Chang, Frederic Vallejo, Benjamin Schachner, Ashish H. Shah, Ricardo J. Komotar, Vikram Chakravarthy, and Michael E. Ivan
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Surgery ,Neurology (clinical) - Published
- 2023
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37. Predicting Academic Career Placement via Development of Novel Intra-residency Metrics
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Vaidya Govindarajan, Ashish H. Shah, Alexis A. Morell, Veronica Borowy, Shreya M. Ingle, Mynor J. Mendez Valdez, Sarah Rivas, Daniel G. Eichberg, Evan Luther, Victor Lu, John Heiss, Ricardo J. Komotar, and Allan D. Levi
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Surgery ,Neurology (clinical) - Published
- 2023
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38. Distinct survival and clinical profile of infantile glioblastoma: insights from a national database
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Evan Luther, Ossama M. Maher, Ashish H. Shah, Victor M. Lu, Daniel G Eichberg, Toba N. Niazi, and David J. Daniels
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Oncology ,Chemotherapy ,medicine.medical_specialty ,business.industry ,Proportional hazards model ,medicine.medical_treatment ,Cancer ,General Medicine ,medicine.disease ,Comorbidity ,Radiation therapy ,Statistical significance ,Internal medicine ,Pediatrics, Perinatology and Child Health ,medicine ,Neurology (clinical) ,Neurosurgery ,business ,Glioblastoma - Abstract
BACKGROUND The diagnosis of glioblastoma (GBM) in infants aged ≤ 1 year is extremely rare, and its comparability to the more common adult diagnosis is underexplored. Correspondingly, the objective of this study was to interrogate a national cancer database to elucidate the typical survival and clinical profile of this demographic. METHODS All GBM patients aged ≤ 1 year in the U.S. National Cancer Database (NCDB) between 2005 and 2016 were retrospectively reviewed. Data were summarized, and overall survival (OS) was modeled using Kaplan-Meier and Cox regression analyses. RESULTS A total of 86 patients satisfied criteria for entry into study, making up 0.08% of all GBM diagnoses in the database. There were 32 (37%) females and 54 (63%) males. Irrespective of treatment, median OS was 67.3 months (95% CI, 46-91), which was distinct from all other ages and pediatric age groups. There were 74 (86%) treated by surgery, 51 (59%) treated by chemotherapy, and 17 (20%) treated by radiation therapy. Multivariable analysis demonstrated that Hispanic status (HR = 3.41, P = 0.02) and the presence of comorbidity (HR = 3.24, P = 0.01) independently predicted shorter OS, whereas treatment with chemotherapy (HR = 0.18, P
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- 2021
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39. Prognosticating survival of pineal parenchymal tumors of intermediate differentiation (PPTID) by grade
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Michael E. Ivan, Alexis Morell, Ricardo J. Komotar, Evan Luther, Victor M. Lu, Daniel G Eichberg, and Ashish H. Shah
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Cancer Research ,medicine.medical_specialty ,Chemotherapy ,Proportional hazards model ,business.industry ,medicine.medical_treatment ,Cancer ,Histology ,medicine.disease ,Gastroenterology ,Radiation therapy ,Neurology ,Oncology ,Internal medicine ,Cohort ,medicine ,Adjuvant therapy ,Neurology (clinical) ,business ,Survival rate - Abstract
Pineal parenchymal tumors of intermediate differentiation (PPTID) are a rare group of pineal parenchymal tumors classified by histology as either World Health Organization (WHO) Grades 2 or 3. The rarity of these tumors in adults has left a number of clinical management questions open. Correspondingly, the aim of this study was to aggregate a large PPTID cohort with sufficient statistical power from a large national cancer database to analyze prognostic parameters. All PPTID patients aged over 18 years in the U.S. National Cancer Database (NCDB) between 2005 and 2016 were retrospectively reviewed. Data were summarized and survival was modeled using Kaplan–Meier and Cox regression analyses. A total of 103 adult PPTID patients were identified in the NCDB with 63 (61%) WHO Grade 2 and 40 (39%) WHO Grade 3 tumors. Overall, mean age was 53 ± 18 years with even gender distribution. A total of 75 (73%) patients underwent surgical resection for diagnosis, with gross total resection (GTR) was the most common resection outcome in 50/75 (67%). Chemotherapy was utilized in 18 (17%) patients, and radiation therapy in 37 (36%) patients. Overall, 5-year survival rate was estimated to be 54% (95% CI 42–64%), with mean survival was 84 (95% CI 69–99) months. Patients with Grade 2 tumors survived statistically longer than Grade 3 tumor counterparts (P
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- 2021
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40. Surgical Approaches to Thalamic Gliomas: A Systematic Review
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Martín Merenzon, Adam S. Levy, Shovan Bhatia, Tiffany Eatz, Alexis A. Morell, Lekhaj Daggubati, Katherine Berry, Daniel G. Eichberg, Jay Chandar, Ashish H. Shah, Evan Luther, Victor M. Lu, Ricardo J. Komotar, and Michael E. Ivan
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Surgery ,Neurology (clinical) - Abstract
Adult thalamic gliomas (ATGs) present a surgical challenge given their depth and proximity to eloquent brain regions. Choosing a surgical approach relies on different clinical variables such as anatomical location and size of the tumor. However, conclusive data regarding how these variables influence the balance between extent of resection and complications are lacking. We aim to systematically review the literature to describe the current surgical outcomes of ATG and to provide tools that may improve the decision-making process.Literature regarding the surgical management of ATG patients was reviewed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Four databases were queried and a description of clinical characteristics and survival analysis were performed. An individual patient data analysis was conducted when feasible.A total of 462 patients were included from 13 studies. The mean age was 39.8 years with a median preoperative Karnofsky performance scale of 70. The lateral approaches were most frequently used (74.9%), followed by the interhemispheric (24.2%). Gross total and subtotal/partial resections were achieved in 81%, and 19% of all cases, respectively. New permanent neurological deficits were observed in 51/433 patients (11.8%). individual patient data was pooled from 5 studies (n = 71). In the multivariate analysis, tumors located within the posterior thalamus had worse median overall survival compared to anterior gliomas (14.5 vs. 27 months, P = 0.003).Surgical resection of ATGs can increase survival but at the risk of operative morbidity. Knowing which factors impact survival may allow neurosurgeons to propose a more evidence-based treatment to their patients.
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- 2022
41. Correlation of Impedance Cardiography-Derived and Cardiac Magnetic Resonance-Derived Stroke Volumes
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Pedram Hassan-Tash, Umar Ismail, Iain D.C. Kirkpatrick, Amir Ravandi, Davinder S. Jassal, Brett Hiebert, Malek Kass, Richard A. Krasuski, and Ashish H. Shah
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General Medicine ,Cardiology and Cardiovascular Medicine - Abstract
Cardiac output (CO) and other hemodynamic parameter measurements play an important role in the management of cardiovascular conditions; however, due to limitations of current day technologies, such measurements are either not routinely performed or incorporated into clinical practice. Moreover, measurement of these hemodynamic parameters in the outpatient setting at different time points to assess interval change is currently not feasible. We attempted to validate total-body impedance cardiography-based Non-Invasive Cardiac System (NICaS) derived stroke volume (SV) with that from cardiac magnetic resonance (CMR), a current day gold standard method of assessment. We compared SV, as it is the primary unit of measurement utilized by both technologies. Forty-one consecutive patients undergoing CMR were also investigated by NICaS following CMR. The consistency of non-invasive technology-derived SV measurement was validated by NICaS measurement in 10 subjects, both before and after CMR. Of the 41 enrolled patients; data from 38 patients was adequate for comparison (motion artifact prevented CMR measures in 3 patients). Fourteen patients (37%) were female; mean age was 55 ± 15 years (28-87 years) and body-mass index was 28.7 ± 5.5 kg/m
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- 2022
42. Chest Pain Post-Transcatheter Aortic Valve Implantation
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Umar Ismail, Manish Motwani, Douglas G.W. Fraser, Ragheb Hasan, and Ashish H. Shah
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Cardiology and Cardiovascular Medicine - Published
- 2022
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43. Is endoscopic resection a useful technique for a cavernous sinus sellar cavernoma? A case report and literature review
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Evan Luther, Ricardo J. Komotar, Victor M. Lu, Franco Rubino, Ali G Saad, Ashish H. Shah, Daniel G Eichberg, and Michael E. Ivan
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medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,Vascular malformation ,Subtotal Resection ,General Medicine ,Cavernous malformations ,medicine.disease ,Radiation therapy ,Cavernous sinus ,otorhinolaryngologic diseases ,Medicine ,Surgery ,Endoscopic resection ,Neurology (clinical) ,Radiology ,business - Abstract
Cavernous sinus cavernous malformations (CSCMs) is a vascular malformation of the cavernous sinus. Nowadays, there is an increasing preference to withhold using the terms cavernoma or cavernous hemangioma in order to stop considering these lesions as vascular neoplasms. These lesions are highly vascularized making surgical resection a challenge, mainly in endoscopic approaches. We present a case of this tumor treated in our institution with an endoscopic endonasal approach and incomplete resection. Because of the strenuous resection through this approach, we systematically reviewed the reported endoscopic cases of CSCMs to determine their intraoperative complications, results and tumor features.Using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines, one database (PubMed) and crossed references were queried for CSCMs from 1948 to 2020. Data regarding demographic features, clinical presentation, MRI features, surgical results and overall pathology features extracted.Eighteen patients were selected (including our case). The mean age was 50.4 ± 14 years. Pituitary dysfunction and cavernous sinus nerve compression were the most reported symptoms. Only five cases (27%) reported a gross total resection (GTR) through endoscopic endonasal approach. Intraoperative bleeding was the most frequent intraoperative complication.We present a comprehensive analysis of every reported CSCM treated through endoscopic approach. Partial or subtotal resection are the most used techniques because of the intraoperative bleeding and the adherence to surrounding structures. Radiotherapy is a very good option for patients with incomplete resections.
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- 2021
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44. Robotic guidance platform for laser interstitial thermal ablation and stereotactic needle biopsies: a single center experience
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Michael E. Ivan, Long Di, Daniel G Eichberg, Evan Luther, Victor M. Lu, Karen Eliahu, Franco Rubino, Ashish H. Shah, Ricardo J. Komotar, and Joacir Graciolli Cordeiro
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medicine.medical_specialty ,Thermal ablation ,Health Informatics ,Stereotactic procedures ,Single Center ,Brain tumors ,Laser Interstitial Thermal Therapy ,Robotic Surgical Procedures ,medicine ,Skull bone ,Humans ,Stereotactic neurosurgery ,Aged ,Retrospective Studies ,business.industry ,Lasers ,Biopsy, Needle ,Robotic neurosurgery ,Robotics ,Middle Aged ,Magnetic Resonance Imaging ,Catheter ,ROSA robot ,LITT ,Surgery ,Original Article ,Radiology ,Laser Therapy ,Catheter placement ,Fiducial marker ,business - Abstract
While laser ablation has become an increasingly important tool in the neurosurgical oncologist’s armamentarium, deep seated lesions, and those located near critical structures require utmost accuracy during stereotactic laser catheter placement. Robotic devices have evolved significantly over the past two decades becoming an accurate and safe tool for stereotactic neurosurgery. Here, we present our single center experience with the MedTech ROSA ONE Brain robot for robotic guidance in laser interstitial thermal therapy (LITT) and stereotactic biopsies. We retrospectively analyzed the first 70 consecutive patients treated with ROSA device at a single academic medical center. Forty-three patients received needle biopsy immediately followed by LITT with the catheter placed with robotic guidance and 27 received stereotactic needle biopsy alone. All the procedures were performed frameless with skull bone fiducials for registration. We report data regarding intraoperative details, mortality and morbidity, diagnostic yield and lesion characteristics on MRI. Also, we describe the surgical workflow for both procedures. The mean age was 60.3 ± 15 years. The diagnostic yield was positive in 98.5% (n = 69). Sixty-three biopsies (90%) were supratentorial and seven (10%) were infratentorial. Gliomas represented 54.3% of the patients (n = 38). There were two postoperative deaths (2.8%). No permanent morbidity related to surgery were observed. We did not find intraoperative technical problems with the device. There was no need to reposition the needle after the initial placement. Stereotactic robotic guided placement of laser ablation catheters and biopsy needles is safe, accurate, and can be implemented into a neurosurgical workflow.
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- 2021
45. Safety and Facial Nerve Outcomes of Intracisternal Papaverine Irrigation for Vestibular Schwannoma Resection
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Michael A. Silva, Henry Chang, Ashish H. Shah, Nickalus R. Khan, Clifford S. Brown, Christine T. Dinh, Adrien A. Eshraghi, Fred F. Telischi, Simon I. Angeli, and Jacques J. Morcos
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Surgery ,Neurology (clinical) - Abstract
Papaverine, a vasodilator approved for use by the U.S. Food and Drug Administration, has shown efficacy in treating vasospasm in cardiology, urology, and nephrology. The vasodilatory effect of papaverine is also hoped to protect the facial nerve from ischemic damage and nerve manipulation during vestibular schwannoma surgery. Our institution uses intracisternal papaverine irrigation during vestibular schwannoma resection to protect the facial nerve in patients with neuromonitoring changes. Our objective was to investigate the safety and facial nerve outcomes of intracisternal papaverine irrigation during vestibular schwannoma resection.We retrospectively reviewed patients who underwent resection of vestibular schwannoma at our institution between 2008 and 2021. Patients received papaverine if the intraoperative facial nerve stimulation threshold increased above 0.05 mA. Postoperative outcomes were compared with control patients who did not receive papaverine.A total of 283 cases were included in our analysis. Patients who received papaverine (n = 60) had lower immediate postoperative House-Brackmann (HB) grades than did control individuals (mean, 1.54 vs. 1.95; P = 0.029) and a lower likelihood of immediate postoperative HB grade1 (odds ratio, 0.514; P = 0.039). At long-term follow-up, there was no significant difference in HB grade. Papaverine use was not associated with increased rates of perioperative complications (P = 0.24).The off-label use of intracisternal papaverine irrigation during vestibular schwannoma resection can certainly be used safely for select cases. It is associated with improved immediate postoperative facial nerve outcomes, similar long-term facial nerve outcomes, and no significant increase in complications.
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- 2022
46. Targeting protein arginine methyltransferase 5 sensitizes glioblastoma to trametinib
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Yeshavanth Kumar Banasavadi-Siddegowda, Sriya Namagiri, Yoshihiro Otani, Hannah Sur, Sarah Rivas, Jean-Paul Bryant, Allison Shellbourn, Mitchell Rock, Ashis Chowdhury, Cole T Lewis, Toshihiko Shimizu, Stuart Walbridge, Sivarajan Kumarasamy, Ashish H Shah, Tae Jin Lee, Dragan Maric, Yuanqing Yan, Ji Young Yoo, Sangamesh G Kumbar, John D Heiss, and Balveen Kaur
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Basic and Translational Investigations ,General Medicine - Abstract
Background The prognosis of glioblastoma (GBM) remains dismal because therapeutic approaches have limited effectiveness. A new targeted treatment using MEK inhibitors, including trametinib, has been proposed to improve GBM therapy. Trametinib had a promising preclinical effect against several cancers, but its adaptive treatment resistance precluded its clinical translation in GBM. Previously, we have demonstrated that protein arginine methyltransferase 5 (PRMT5) is upregulated in GBM and its inhibition promotes apoptosis and senescence in differentiated and stem-like tumor cells, respectively. We tested whether inhibition of PRMT5 can enhance the efficacy of trametinib against GBM. Methods Patient-derived primary GBM neurospheres (GBMNS) with transient PRMT5 knockdown were treated with trametinib and cell viability, proliferation, cell cycle progression, ELISA, and western blot were analyzed. In vivo, NSG mice were intracranially implanted with PRMT5-intact and -depleted GBMNS, treated with trametinib by daily oral gavage, and observed for tumor progression and mice survival rate. Results PRMT5 depletion enhanced trametinib-induced cytotoxicity in GBMNS. PRMT5 knockdown significantly decreased trametinib-induced AKT and ERBB3 escape pathways. However, ERBB3 inhibition alone failed to block trametinib-induced AKT activity suggesting that the enhanced antitumor effect imparted by PRMT5 knockdown in trametinib-treated GBMNS resulted from AKT inhibition and not ERBB3 inhibition. In orthotopic murine xenograft models, PRMT5-depletion extended the survival of tumor-bearing mice, and combination with trametinib further increased survival. Conclusion Combined PRMT5/MEK inhibition synergistically inhibited GBM in animal models and is a promising strategy for GBM therapy.
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- 2022
47. Stimulated Raman Histology for Rapid Intraoperative Diagnosis of Gliomas
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Ashish H. Shah, Evan Luther, Ricardo J. Komotar, Victor M. Lu, Michael E. Ivan, Sakir H. Gultekin, Aria M. Jamshidi, Kevin Huang, Long Di, and Daniel G Eichberg
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Adult ,Male ,medicine.medical_specialty ,Brain tumor ,Sensitivity and Specificity ,Neurosurgical Procedures ,Intraoperative Period ,03 medical and health sciences ,0302 clinical medicine ,Glioma ,Image Processing, Computer-Assisted ,medicine ,Humans ,Computer Simulation ,Prospective Studies ,Prospective cohort study ,Aged ,Permanent Section ,Aged, 80 and over ,Frozen section procedure ,Brain Neoplasms ,business.industry ,Margins of Excision ,Reproducibility of Results ,Histology ,Gold standard (test) ,Middle Aged ,medicine.disease ,Magnetic Resonance Imaging ,030220 oncology & carcinogenesis ,Female ,Surgery ,Histopathology ,Neurology (clinical) ,Radiology ,business ,030217 neurology & neurosurgery - Abstract
Intraoperative pathologic diagnosis traditionally involves frozen section histopathology, which may be labor and time intensive. Indeed, a technique that streamlines the acquisition and evaluation of intraoperative histologic data may expedite surgical decision-making and shorten operative time. Stimulated Raman histology (SRH) is an emerging technology that allows for more rapid acquisition and interpretation of intraoperative histopathologic data.A blinded, prospective cohort study was performed for 82 patients undergoing resection for a central nervous system tumor. Of these, 21 patients were diagnosed with glioma either intraoperatively or postoperatively on permanent section histology and included in this study. Time to diagnosis (TTD) and diagnostic accuracy relative to permanent section (the gold standard) were compared between SRH-based diagnosis and conventional frozen section histology. Diagnostic concordance with permanent section was also compared between frozen histopathology and SRH diagnosis.Diagnostic accuracy was not significantly different between methods (P = 1.00). Diagnostic concordance was not significantly different between methods when comparing 95% confidence intervals for kappa values (κ = 0.215; κ = 0.297; κ = 0.369). Lastly, mean TTD was significantly shorter with SRH-based diagnosis compared with frozen section (43 vs. 9.7 minutes, P0.0001). SRH was able to identify key features associated with varying glioma types.SRH allows for rapid intraoperative diagnosis without sacrificing diagnostic accuracy. SRH may serve as a promising adjuvant to conventional histopathology to expedite intraoperative pathology consultation and surgical decision-making.
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- 2021
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48. Clinical development of retroviral replicating vector Toca 511 for gene therapy of cancer
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Douglas J. Jolly, Sara Collins, Noriyuki Kasahara, Ashish H. Shah, and Derek Ostertag
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0301 basic medicine ,medicine.medical_treatment ,Genetic enhancement ,Genetic Vectors ,Clinical Biochemistry ,Article ,Cytosine Deaminase ,Viral vector ,03 medical and health sciences ,0302 clinical medicine ,Cell Line, Tumor ,Neoplasms ,Drug Discovery ,Medicine ,Vector (molecular biology) ,Pharmacology ,business.industry ,Cancer ,Genetic Therapy ,Immunotherapy ,Prodrug ,medicine.disease ,Recombinant Proteins ,Clinical trial ,030104 developmental biology ,Cell killing ,030220 oncology & carcinogenesis ,Cancer research ,business - Abstract
Introduction The use of tumor-selectively replicating viruses is a rapidly expanding field that is showing considerable promise for cancer treatment. Retroviral replicating vectors (RRV) are unique among the various replication-competent viruses currently being investigated for potential clinical utility, because they permanently integrate into the cancer cell genome, and are capable of long-term persistence within tumors. RRV can mediate efficient tumor-specific delivery of prodrug activator genes, and subsequent prodrug treatment leads to synchronized cell killing of infected cancer cells, as well as activation of anti-tumor immune responses. Areas covered Here we review preclinical studies supporting bench-to-bedside translation of Toca 511, an optimized RRV for prodrug activator gene therapy, the results from Phase I through III clinical trials to date, and potential future directions for this therapy as well as other clinical candidate RRVs. Expert opinion Toca 511 has shown highly promising results in early-stage clinical trials. This vector progressed to a registrational Phase III trial, but the results announced in late 2019 appeared negative overall. However, the median prodrug dosing schedule was not optimal, and promising possible efficacy was observed in some prespecified subgroups. Further clinical investigation, as well as development of RRV with other transgene payloads, is merited.
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- 2021
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49. Current experimental therapies for atypical and malignant meningiomas
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Victor M. Lu, Evan Luther, Andres M. Corona, Ashish H. Shah, Daniel G Eichberg, Long Di, Ricardo J. Komotar, Raphael Crespo, and Michael E. Ivan
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Oncology ,Cancer Research ,medicine.medical_specialty ,Neurology ,Malignant meningioma ,business.industry ,medicine.medical_treatment ,Treatment options ,Immunotherapy ,Targeted therapy ,Radiation therapy ,Clinical trial ,03 medical and health sciences ,0302 clinical medicine ,030220 oncology & carcinogenesis ,Targeted Molecular Therapy ,Internal medicine ,medicine ,Neurology (clinical) ,business ,030217 neurology & neurosurgery - Abstract
Atypical (WHO grade II) and malignant meningiomas (WHO Grade III) are a rare subset of primary intracranial tumors. Given their relatively high recurrence rate after surgical resection and radiotherapy, there has been a recent push to explore other adjuvant treatment options for these treatment-refractory tumors. Recent advances in molecular sequencing of tumors have elucidated new pathways and drug targets which are currently being studied. This article provides a thorough overview of novel investigational therapeutics including targeted therapy, immunotherapy, and new technological modalities for atypical and malignant meningiomas. We performed a comprehensive review of the available literature regarding preclinical and clinical evidence for emerging treatments for high grade meningiomas from 1980 to 2020 including contemporaneous clinical trials. There is encouraging preclinical evidence regarding the efficacy of the emerging treatments discussed in this article. Several clinical trials are currently recruiting patients to translate targeted molecular therapy for meningiomas. Several clinical studies have suggested a clinical benefit of combinatorial treatment for these treatment-refractory tumors. With numerous active clinical trials for high grade meningiomas, a meaningful improvement in the outcomes for these tumors may be on the horizon.
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- 2021
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50. Population and Resource Utilization Among Patients With Adult Congenital Heart Disease: A Snapshot View of a Moderate-Size Canadian Regional Centre
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Brett Hiebert, Robin A. Ducas, Luis A. Castro, Ashish H. Shah, and James W. Tam
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medicine.medical_specialty ,education.field_of_study ,medicine.diagnostic_test ,Heart disease ,business.industry ,Population ,Retrospective cohort study ,medicine.disease ,Cardiac magnetic resonance imaging ,RC666-701 ,Cardiac interventions ,Emergency medicine ,Health care ,Cohort ,medicine ,Diseases of the circulatory (Cardiovascular) system ,Original Article ,Cardiology and Cardiovascular Medicine ,education ,business ,Resource utilization - Abstract
Background: Health care resource utilization for patients with adult congenital heart disease (ACHD) has not been well characterized outside of large Canadian specialized regional centres. We sought to describe the ACHD population and resource utilization patterns seen in a medium regional Canadian centre providing specialized ACHD care. Methods: A cross-sectional retrospective study was done from a sample of patients seen in 2018 at the ACHD clinic in Manitoba, Canada. Demographic data were collected along with cardiac anatomy and repair type. Health care resource utilization, clinic visits, hospital admissions, unexpected hospital presentations, and cardiac interventions were measured over a 5-year period. Results: A random sample of 262 patients was selected from our specialized ACHD clinic. Mean age was 33.5 (±13.7) years; 48% of the population was female, and >50% resided within the major city limits. A total of 21% of the population had simple anatomy, 44% had moderate anatomy, and 35% had complex anatomy. The most commonly used imaging modality was echocardiography, followed by cardiac magnetic resonance imaging, with more frequent imaging done in patients with complex anatomy. Unexpected hospital encounters occurred at a rate of 16 per 100 person-years. Total inpatient hospital days occurred at a rate of 33 per 100 person-years, and visits to the congenital clinic occurred at a rate of 90 per 100 person-years. Conclusions: Health care resource utilization appears to be highest in older adults and those with more complex ACHD anatomy. As the overall cohort of adults with ACHD continues to age, resource needs are likely to increase. Résumé: Contexte: L'utilisation des ressources de santé à l'extérieur des grands centres spécialisés régionaux au Canada n'a pas été bien caractérisée pour les patients atteints de cardiopathie congénitale de l'adulte (CCA). Nous avons cherché à décrire la population atteinte de CCA et les schémas d'utilisation des ressources observés dans un centre régional canadien de taille moyenne fournissant des soins spécialisés en CCA. Méthodologie: Une étude transversale rétrospective a été réalisée à partir d'un échantillon de patients rencontrés en 2018 dans une clinique spécialisée en CCA du Manitoba, au Canada. Des données démographiques ont été recueillies de même que des données sur l'anatomie cardiaque et le type de réparation. L'utilisation des ressources de soins de santé, les visites à la clinique, les admissions à l'hôpital, les consultions hospitalières imprévues et les interventions cardiaques ont été mesurées sur une période de cinq ans. Résultats: Un échantillon aléatoire de 262 patients a été sélectionné dans notre clinique spécialisée en CCA. L’âge moyen des patients était de 33,5 (±13,7) ans; 48 % de la population était de sexe féminin et plus de 50 % résidait dans les limites d'une grande ville. Au total, 21 % de la population présentait une anatomie cardiaque simple, 44 % une anatomie modérément complexe et 35 % une anatomie complexe. La technique d'imagerie la plus utilisée était l’échocardiographie, suivie de l'imagerie par résonance magnétique cardiaque, l'imagerie étant plus fréquente chez les patients présentant une anatomie cardiaque complexe. Le taux de consultations hospitalières imprévues était de 16 pour 100 années-patient. Le nombre total de jours d'hospitalisation était de 33 pour 100 années-patient, et le nombre de visites à la clinique spécialisée en CCA était de 90 pour 100 années-patient. Conclusions: L'utilisation des ressources de soins de santé semble être plus élevée chez les adultes plus âgés et chez ceux qui présentent une anatomie plus complexe liée à la CCA. Puisque l'ensemble de la cohorte d'adultes atteints de CCA continue de vieillir, les besoins en ressources sont susceptibles d'augmenter.
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- 2021
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