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Articles 1 - 21 of 21
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Cognitively Normal Women With Alzheimer’S Disease Proteinopathy Show Relative Preservation Of Memory But Not Of Hippocampal Volume, Jessica Z.K. Caldwell, Jeffrey L. Cummings, Sarah J. Banks, Sebastian Palmqvist, Oskar Hansson
Cognitively Normal Women With Alzheimer’S Disease Proteinopathy Show Relative Preservation Of Memory But Not Of Hippocampal Volume, Jessica Z.K. Caldwell, Jeffrey L. Cummings, Sarah J. Banks, Sebastian Palmqvist, Oskar Hansson
School of Medicine Faculty Publications
Background: We examined interactive effects of sex, diagnosis, and cerebrospinal fluid (CSF) amyloid beta/phosphorylated tau ratio (Aβ/P-tau) on verbal memory and hippocampal volumes. Methods: We assessed 682 participants (350 women) from BioFINDER (250 cognitively normal [CN]; and 432 symptomatic: 186 subjective cognitive decline [SCD], 246 mild cognitive impairment [MCI]). General linear models evaluated effects of Alzheimer’s disease (AD) proteinopathy (CSF Aß/p-tau ratio), diagnosis, and sex on verbal memory (ADAS-cog 10-word recall), semantic fluency (animal naming fluency), visuospatial skills (cube copy), processing speed/attention functions (Symbol Digit Modalities Test and Trail Making Part A), and hippocampal volumes. Results: Amyloid-positive (Aβ/P-tau+) CN women …
Safety Of Endoscopic Retrograde Cholangiopancreatography (Ercp) In Pregnancy: A Systematic Review And Meta-Analysis, Mohamed Azab, Shishira Bharadwaj, Mahendran Jayaraj, Annie S. Hong, Pejman Solaimani, Mohamad Mubder, Hyeyoung Yeom, Ji Won Yoo, Michael L. Volk
Safety Of Endoscopic Retrograde Cholangiopancreatography (Ercp) In Pregnancy: A Systematic Review And Meta-Analysis, Mohamed Azab, Shishira Bharadwaj, Mahendran Jayaraj, Annie S. Hong, Pejman Solaimani, Mohamad Mubder, Hyeyoung Yeom, Ji Won Yoo, Michael L. Volk
School of Medicine Faculty Publications
Background/Aims: Endoscopic retrograde cholangiopancreatography (ERCP) is a technically challenging procedure rarely associated with severe postprocedure complications. Hormonal changes during pregnancy promote cholelithiasis, but there are limited clinical data available on the outcomes of ERCP in pregnant women. ERCP techniques without irradiation were recently introduced as potential alternative. We performed a systematic review and meta-analysis to assess the safety of ERCP in pregnancy and to compare outcomes of radiation versus nonradiation ERCP. Materials and Methods: A systematic search of PubMed, Medline/Ovid, Web of Science, and Google Scholar through April 18th, 2018 using PRISMA and MOOSE guidelines identified 27 studies reporting the …
Biological And Practical Implications Of Genome-Wide Association Study Of Schizophrenia Using Bayesian Variable Selection, Benazir Rowe, Xiangning Chen, Zuoheng Wang, Jingchun Chen, Amei Amei
Biological And Practical Implications Of Genome-Wide Association Study Of Schizophrenia Using Bayesian Variable Selection, Benazir Rowe, Xiangning Chen, Zuoheng Wang, Jingchun Chen, Amei Amei
School of Medicine Faculty Publications
Genome-wide association studies (GWAS) have identified over 100 loci associated with schizophrenia. Most of these studies test genetic variants for association one at a time. In this study, we performed GWAS of the molecular genetics of schizophrenia (MGS) dataset with 5334 subjects using multivariate Bayesian variable selection (BVS) method Posterior Inference via Model Averaging and Subset Selection (piMASS) and compared our results with the previous univariate analysis of the MGS dataset. We showed that piMASS can improve the power of detecting schizophrenia-associated SNPs, potentially leading to new discoveries from existing data without increasing the sample size. We tested SNPs in …
Trends And Associated Factors Of Use Of Opioid, Heroin, And Cannabis Among Patients For Emergency Department Visits In Nevada: 2009–2017, Pearl C. Kim, Ji Won Yoo, Chris R. Cochran, Seong Min Park, Sungyoun Chun, Yong-Jae Lee, Jay J. Shen
Trends And Associated Factors Of Use Of Opioid, Heroin, And Cannabis Among Patients For Emergency Department Visits In Nevada: 2009–2017, Pearl C. Kim, Ji Won Yoo, Chris R. Cochran, Seong Min Park, Sungyoun Chun, Yong-Jae Lee, Jay J. Shen
School of Medicine Faculty Publications
To examine trends and contributing factors of opioid, heroin, and cannabis-associated emergency department (ED) visits in Nevada. The 2009 to 2017 Nevada State ED database (n = 7,950,554 ED visits) were used. Use of opioid, heroin, and cannabis, respectively, was identified by the International Classification of Diseases, 9th & 10th Revisions. Three multivariable models, one for each of the 3 dependent variables, were conducted. Independent variables included year, insurance status, race/ethnicity, use of other substance, and mental health conditions. The number of individuals with opioid, heroin, cannabis-associated ED visits increased 3%, 10%, and 23% annually from 2009 to 2015, particularly …
Drug-Induced Autoimmune Hepatitis From Hydralazine Leading To Acute Liver Failure And Liver Transplantation, Jasleen Grewal, Angela Doan, Annie S. Hong, Arpit Amin, Jason V. Scapa, Ramy Hanna, Francisco Durazo, Beshoy Yanny
Drug-Induced Autoimmune Hepatitis From Hydralazine Leading To Acute Liver Failure And Liver Transplantation, Jasleen Grewal, Angela Doan, Annie S. Hong, Arpit Amin, Jason V. Scapa, Ramy Hanna, Francisco Durazo, Beshoy Yanny
School of Medicine Faculty Publications
We describe a woman with no previous liver disease who developed drug-induced autoimmune hepatitis from hydralazine prescribed to her for hypertension. Despite the discontinuation of the medication, she developed acute liver failure and subsequently underwent successful liver transplantation. She survived and had a good clinical outcome.
Possible Skull Base Erosion After Prolonged Frontal Sinus Stenting, Nathaniel H. Reeve Md, Harry H. Ching Md, Yuna Kim Md, Walter W. Schroeder Md
Possible Skull Base Erosion After Prolonged Frontal Sinus Stenting, Nathaniel H. Reeve Md, Harry H. Ching Md, Yuna Kim Md, Walter W. Schroeder Md
School of Medicine Faculty Publications
Frontal sinus stenting is widely used with the goal of maintaining nasofrontal duct patency after sinus surgery. The general recommendation is to leave stents in place for 6 months; however, prolonged stenting up to 6 years has been reported with no complication. We present the first reported case of frontal sinus posterior table and skull base erosion following prolonged frontal sinus stenting. A 57-year-old female presented with chronic sinusitis and nasal obstruction. Imaging revealed pansinusitis with retained stents in each frontal sinus that were placed 8 years prior. On the right, there was an area of skull base erosion at …
A Frameshift Variant In The Chst9 Gene Identified By Family-Based Whole Genome Sequencing Is Associated With Schizophrenia In Chinese Population, Jingchun Chen, Jain-Shing Wu, Travis Mize, Marvi Moreno, Mahtab Hamid, Francisco Servin, Bita Bashy, Zhongming Zhao, Peilin Jia, Ming T. Tsuang, Kenneth S. Kendler, Momiao Xiong, Xiangning Chen
A Frameshift Variant In The Chst9 Gene Identified By Family-Based Whole Genome Sequencing Is Associated With Schizophrenia In Chinese Population, Jingchun Chen, Jain-Shing Wu, Travis Mize, Marvi Moreno, Mahtab Hamid, Francisco Servin, Bita Bashy, Zhongming Zhao, Peilin Jia, Ming T. Tsuang, Kenneth S. Kendler, Momiao Xiong, Xiangning Chen
School of Medicine Faculty Publications
Recent studies imply that rare variants contribute to the risk of schizophrenia, however, the exact variants or genes responsible for this condition are largely unknown. In this study, we conducted whole genome sequencing (WGS) of 20 Chinese families. Each family consisted of at least two affected siblings diagnosed with schizophrenia and at least one unaffected sibling. We examined functional variants that were found in affected sibling(s) but not in unaffected sibling(s) within a family. Matching this criterion, a frameshift heterozygous deletion of CA (–/CA) at chromosome 18:24722722, also referred to as rs752084147, in the Carbohydrate Sulfotransferase 9 (CHST9) gene, was …
Autoimmune Hepatitis In Patients With Human Immunodeficiency Virus Infection, Mohamad Mubder, Mohamed Azab, Mahendran Jayaraj, Chad Cross, Daisy Lankarani, Banreet Dhindsa, Jen-Jung Pan, Gordon Ohning
Autoimmune Hepatitis In Patients With Human Immunodeficiency Virus Infection, Mohamad Mubder, Mohamed Azab, Mahendran Jayaraj, Chad Cross, Daisy Lankarani, Banreet Dhindsa, Jen-Jung Pan, Gordon Ohning
School of Medicine Faculty Publications
Background: Liver disease in patients with HIV is common and typically has complex and multifactorial presentations that represent a major cause of morbidity and mortality. Autoimmune hepatitis (AIH) is rarely reported in patient with HIV and the disease course and clinical outcomes for treatment have not been well characterized. We are aiming to determine the patient characteristics, disease prevalence, and treatment outcomes from published articles of patients with HIV and AIH. Method: A systematic search of PubMed, Web of Science, and Google Scholar through February 20th, 2019 identified 15 studies that reported the outcomes of AIH in patients with HIV. …
The “Rights” Of Precision Drug Development For Alzheimer’S Disease, Jeffrey Cummings, Howard H. Feldman, Philip Scheltens
The “Rights” Of Precision Drug Development For Alzheimer’S Disease, Jeffrey Cummings, Howard H. Feldman, Philip Scheltens
School of Medicine Faculty Publications
There is a high rate of failure in Alzheimer’s disease (AD) drug development with 99% of trials showing no drug-placebo difference. This low rate of success delays new treatments for patients and discourages investment in AD drug development. Studies across drug development programs in multiple disorders have identified important strategies for decreasing the risk and increasing the likelihood of success in drug development programs. These experiences provide guidance for the optimization of AD drug development. The “rights” of AD drug development include the right target, right drug, right biomarker, right participant, and right trial. The right target identifies the appropriate …
Sex Moderates Amyloid And Apolipoprotein Ε4 Effects On Default Mode Network Connectivity At Rest, Jessica Z.K. Caldwell, Xiaowei Zhuang, Mackenzie J. Leavitt, Sarah J. Banks, Jeffery Cummings, Dietmar Cordes
Sex Moderates Amyloid And Apolipoprotein Ε4 Effects On Default Mode Network Connectivity At Rest, Jessica Z.K. Caldwell, Xiaowei Zhuang, Mackenzie J. Leavitt, Sarah J. Banks, Jeffery Cummings, Dietmar Cordes
School of Medicine Faculty Publications
Women are more likely to have Alzheimer's disease (AD) and decline more rapidly once diagnosed despite greater verbal memory early in the disease compared to men—an advantage that has been termed “memory reserve.” Resting state functional MRI (fMRI) investigations demonstrate interactions between sex and AD risk factors in default mode network (DMN) connectivity, a network of brain regions showing progressive dysfunction in AD. Separate work suggests connectivity of left prefrontal cortex (PFC) may correlate with more general cognitive reserve in healthy aging. It is unknown whether left prefrontal functional connectivity with anterior and posterior default mode network (aDMN, pDMN) might …
Souvenaid In The Management Of Mild Cognitive Impairment: An Expert Consensus Opinion, Jeffrey Cummings, Peter Passmore, Bernadette Mcguinness, Vincent Mok, Christopher Chen, Sebastiaan Engelborghs, Michael Woodward, Sagrario Manzano, Guillermo Garcia-Ribas, Stefano Cappa, Paulo Bertolucci, Leung-Wing Chu
Souvenaid In The Management Of Mild Cognitive Impairment: An Expert Consensus Opinion, Jeffrey Cummings, Peter Passmore, Bernadette Mcguinness, Vincent Mok, Christopher Chen, Sebastiaan Engelborghs, Michael Woodward, Sagrario Manzano, Guillermo Garcia-Ribas, Stefano Cappa, Paulo Bertolucci, Leung-Wing Chu
School of Medicine Faculty Publications
Background Mild cognitive impairment (MCI) among an aging global population is a growing challenge for healthcare providers and payers. In many cases, MCI is an ominous portent for dementia. Early and accurate diagnosis of MCI provides a window of opportunity to improve the outcomes using a personalized care plan including lifestyle modifications to reduce the impact of modifiable risk factors (for example, blood pressure control and increased physical activity), cognitive training, dietary advice, and nutritional support. Souvenaid is a once-daily drink containing a mixture of precursors and cofactors (long-chain omega-3 fatty acids, uridine, choline, B vitamins, vitamin C, vitamin E, …
Alzheimer's Disease Drug Development Pipeline: 2019, Jeffrey Cummings, Garam Lee, Aaron Ritter, Marwan Sabbagh, Kate Zhong
Alzheimer's Disease Drug Development Pipeline: 2019, Jeffrey Cummings, Garam Lee, Aaron Ritter, Marwan Sabbagh, Kate Zhong
School of Medicine Faculty Publications
Introduction Alzheimer's disease (AD) has few available treatments, and there is a high rate of failure in AD drug development programs. Study of the AD drug development pipeline can provide insight into the evolution of drug development and how best to optimize development practices. Methods We reviewed clinicaltrials.gov and identified all pharmacologic AD trials of all agents currently being developed for treatment of AD. Results There are 132 agents in clinical trials for the treatment of AD. Twenty-eight agents are in 42 phase 3 trials; 74 agents are in 83 phase 2 trials; and 30 agents are in 31 phase …
Safety And Efficacy Of Combined Antegrade And Retrograde Endoscopic Dilation For Complete Esophageal Obstruction: A Systematic Review And Meta-Analysis, Mahendran Jayaraj, Babu P. Mohan, Harneet Mashiana, Rajesh Krishnamoorthi, Douglas G. Adler
Safety And Efficacy Of Combined Antegrade And Retrograde Endoscopic Dilation For Complete Esophageal Obstruction: A Systematic Review And Meta-Analysis, Mahendran Jayaraj, Babu P. Mohan, Harneet Mashiana, Rajesh Krishnamoorthi, Douglas G. Adler
School of Medicine Faculty Publications
Background Complete esophageal obstruction (CEO) due to occlusive proximal stricture occurs after chemoradiation for head and neck cancers. A combined antegrade and retrograde endoscopic technique with controlled recanalization and dilation (CARD) has been shown to be an effective and safe method for regaining and maintaining esophageal luminal patency in the short term. Methods We conducted a comprehensive search of multiple electronic databases and conference proceedings, including PubMed, EMBASE, and Web of Science databases (from inception through November 2018), to identify studies that reported the outcomes of CARD. The primary outcomes were the pooled rates of technical and clinical success, specifically …
Permanent Junctional Reciprocating Tachycardia In Infants And Children, Ranjit I. Kylat Md, Ricardo A. Samson
Permanent Junctional Reciprocating Tachycardia In Infants And Children, Ranjit I. Kylat Md, Ricardo A. Samson
School of Medicine Faculty Publications
Permanent junctional reciprocating tachycardia (PJRT) is a rare form of supraventricular tachycardia (SVT). It generally presents in infants but can be difficult to diagnose. The characteristic EKG findings, response to Adenosine and persistence or frequent recurrences are helpful in making the diagnosis. It is usually difficult to manage with the initial and single medications used in SVT. Many patients are misdiagnosed and not treated effectively and end up having end stage cardiomyopathy and are diagnosed in patients referred for transplant. Hence all patients referred for a cardiac transplant with dilated cardiomyopathy need to be evaluated for this arrhythmia. If appropriate …
Medical Student Mistreatment: Understanding 'Public Humiliation', Jesse D. Markman, Thomas M. Soeprono, Heidi L. Combs, Ellen M. Cosgrove
Medical Student Mistreatment: Understanding 'Public Humiliation', Jesse D. Markman, Thomas M. Soeprono, Heidi L. Combs, Ellen M. Cosgrove
School of Medicine Faculty Publications
Introduction: Mistreatment in medical school is an enduring problem in medical education. Little is known about the concept of ‘public humiliation,’ one of the most common forms of mistreatment as identified on the AAMC Graduation Questionnaire. The objective of this study was to further investigate ‘public humiliation’ and to understand the underpinnings and realities of ‘public humiliation’ in medical education. Method: Focus groups of medical students on clinical rotation at the University of Washington School of Medicine were conducted over one and a half years. Qualitative analysis of responses identified emergent themes. Results: Study results included responses from 28 third …
Hot Snare Vs. Cold Snare Polypectomy For Endoscopic Removal Of 4-10mm Colorectal Polyps During Colonoscopy: A Systematic Review And Meta-Analysis Of Randomized Controlled Studies, Mahendran Jayaraj
School of Medicine Faculty Publications
Introduction In recent years, cold snare polypectomy (CSP) has increasingly been used over hot snare polypectomy (HSP) for the removal of colorectal polyps (4 – 10 mm in size). However, the optimal technique (CSP vs. HSP), in terms of complete polyp resection and complications, is uncertain. Our aim was to compare incomplete resection rate (IRR) of polyps and complications using CSP vs. HSP. Methods Randomized controlled studies (RCTs) comparing CSP and HSP for removal of 4 – 10 mm colorectal polyps were considered. Studies were included in the analysis if they obtained biopsy specimens from the resection margin to confirm …
Gigantic Stomach: A Rare Manifestation Of Duchenne Muscular Dystrophy, Amaninder Dhaliwal, Sarvani Madiraju, Banreet S. Dhindsa, Getaw W. Hassen, Fedja A. Rochling
Gigantic Stomach: A Rare Manifestation Of Duchenne Muscular Dystrophy, Amaninder Dhaliwal, Sarvani Madiraju, Banreet S. Dhindsa, Getaw W. Hassen, Fedja A. Rochling
School of Medicine Faculty Publications
Duchenne muscular dystrophy (DMD) is characterized by degeneration and atrophy of skeletal, cardiac, and smooth muscles after a latent period of apparently normal development and function. The gastrointestinal manifestations start in the second decade of life and are mainly due to atrophy of smooth muscle layers. Refractory gastroparesis and chronic constipation can lead to severe gastric and small bowel dilatation, which can be life threatening. Here, we present a case of a 21-year-old male with a gigantic stomach secondary to DMD resolved with conservative management and no surgical intervention.
Lumen Apposing Metal Stents In Drainage Of Pancreatic Walled-Off Necrosis, Are They Any Better Than Plastic Stents? A Systematic Review And Meta-Analysis Of Studies Published Since The Revised Atlanta Classification Of Pancreatic Fluid Collections, Babu P. Mohan, Mahendran Jayaraj, Ravishankar Asokkumar, Mohammed Shakhatreh, Parul Pahal, Suresh Ponnada, Udayakumar Navaneethan, Douglas G. Adler
Lumen Apposing Metal Stents In Drainage Of Pancreatic Walled-Off Necrosis, Are They Any Better Than Plastic Stents? A Systematic Review And Meta-Analysis Of Studies Published Since The Revised Atlanta Classification Of Pancreatic Fluid Collections, Babu P. Mohan, Mahendran Jayaraj, Ravishankar Asokkumar, Mohammed Shakhatreh, Parul Pahal, Suresh Ponnada, Udayakumar Navaneethan, Douglas G. Adler
School of Medicine Faculty Publications
Lumen-apposing metal stents (LAMS) are increasingly being used in the drainage of pancreatic walled-off necrosis (WON). Best choice of stent is subject to argument, and studies are varied in the reported outcomes between LAMS and plastic stents (PS) to this end. We conducted a comprehensive search of multiple electronic databases and conference proceedings including PubMed, EMBASE, and Web of Science databases (earliest inception through July 2018) to identify studies that reported on the use of LAMS and PS in WON drainage. Studies published since the release of the revised Atlanta classification for pancreatic fluid collections (2014 to current) were included …
Enhancement Of Viable Adipose-Derived Stem Cells In Lipoaspirate By Buffering Tumescent With Sodium Bicarbonate, Ashish Francis Md, Wei Z. Wang Md, Joshua J. Goldman Md, Xin-Hua Fang Mt, Shelley J. Williams Ms, Richard C. Baynosa Md; Facs
Enhancement Of Viable Adipose-Derived Stem Cells In Lipoaspirate By Buffering Tumescent With Sodium Bicarbonate, Ashish Francis Md, Wei Z. Wang Md, Joshua J. Goldman Md, Xin-Hua Fang Mt, Shelley J. Williams Ms, Richard C. Baynosa Md; Facs
School of Medicine Faculty Publications
Background: Fat grafting is a growing field within plastic surgery. Adipose-derived stem cells (ASCs) and stromal vascular fracture (SVF) may have a role in fat graft survival. Our group previously demonstrated a detrimental effect on ASC survival by the lidocaine used in tumescent solution. Sodium bicarbonate (SB) buffers the acidity of lidocaine. The purpose of this study was to determine whether SB buffering is a practical method to reduce ASC and SVF apoptosis and necrosis seen with common lidocaine-containing tumescent solution. Methods: Human patients undergoing bilateral liposuction for any indication were included in this study. An internally controlled, split-body design …
Pediatric Ingestion Of Multiple Button Batteries, Johnny Fong Md, Tony Zitek
Pediatric Ingestion Of Multiple Button Batteries, Johnny Fong Md, Tony Zitek
School of Medicine Faculty Publications
A two-year-old male presented to the pediatric emergency department for possible foreign body ingestion. Two hours prior to arrival, the child was found with the packaging for 10 button batteries, but his mother was only able to find one battery. The patient had no symptoms. Physical exam was within normal limits. Radiographs (Image 1) showed six foreign bodies within the stomach and one distally
Rethinking Intravenous Catheter Size And Location For Computed Tomography Pulmonary Angiography, Travis Marshall, Nae Meng Chen, Eric Nguyen, David E. Slattery, Tony Zitek
Rethinking Intravenous Catheter Size And Location For Computed Tomography Pulmonary Angiography, Travis Marshall, Nae Meng Chen, Eric Nguyen, David E. Slattery, Tony Zitek
School of Medicine Faculty Publications
Introduction: Computed tomography pulmonary angiography (CTPA) is the test of choice for diagnosis of pulmonary embolism (PE) in the emergency department (ED), but this test may be indeterminate for technical reasons such as inadequate contrast filling of the pulmonary arteries. Many hospitals have requirements for intravenous (IV) catheter size or location for CTPAs to reduce the chances of inadequate filling, but there is a lack of clinical data to support these requirements. The objective of this study was to determine if a certain size or location of IV catheter used for contrast for CTPA is associated with an increased chance …