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Neel Shah

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https://www.readbyqxmd.com/read/28700743/polymorphisms-in-the-vitamin-d-receptor-gene-are-associated-with-reduced-rate-of-sputum-culture-conversion-in-multidrug-resistant-tuberculosis-patients-in-south-africa
#1
Matthew J Magee, Yan V Sun, James C M Brust, N Sarita Shah, Yuming Ning, Salim Allana, Angela Campbell, Qin Hui, Koleka Mlisana, Pravi Moodley, Neel R Gandhi
BACKGROUND: Vitamin D modulates the inflammatory and immune response to tuberculosis (TB) and also mediates the induction of the antimicrobial peptide cathelicidin. Deficiency of 25-hydroxyvitamin D and single nucleotide polymorphisms (SNPs) in the vitamin D receptor (VDR) gene may increase the risk of TB disease and decrease culture conversion rates in drug susceptible TB. Whether these VDR SNPs are found in African populations or impact multidrug-resistant (MDR) TB treatment has not been established...
2017: PloS One
https://www.readbyqxmd.com/read/28697107/relationship-between-labor-and-delivery-unit-management-practices-and-maternal-outcomes
#2
Avery C Plough, Grace Galvin, Zhonghe Li, Stuart R Lipsitz, Shehnaz Alidina, Natalie J Henrich, Lisa R Hirschhorn, William R Berry, Atul A Gawande, Doris Peter, Rory McDonald, Donna L Caldwell, Janet H Muri, Debra Bingham, Aaron B Caughey, Eugene R Declercq, Neel T Shah
OBJECTIVE: To define, measure, and characterize key competencies of managing labor and delivery units in the United States and assess the associations between unit management and maternal outcomes. METHODS: We developed and administered a management measurement instrument using structured telephone interviews with both the primary nurse and physician managers at 53 diverse hospitals across the United States. A trained interviewer scored the managers' interview responses based on management practices that ranged from most reactive (lowest scores) to most proactive (highest scores)...
July 7, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28686159/deconstruction-of-the-ras-switching-cycle-through-saturation-mutagenesis
#3
Pradeep Bandaru, Neel H Shah, Moitrayee Bhattacharyya, John P Barton, Yasushi Kondo, Joshua C Cofsky, Christine L Gee, Arup K Chakraborty, Tanja Kortemme, Rama Ranganathan, John Kuriyan
Ras proteins are highly conserved signaling molecules that exhibit regulated, nucleotide-dependent switching between active and inactive states. The high conservation of Ras requires mechanistic explanation, especially given the general mutational tolerance of proteins. Here, we use deep mutational scanning, biochemical analysis and molecular simulations to understand constraints on Ras sequence. Ras exhibits global sensitivity to mutation when regulated by a GTPase activating protein and a nucleotide exchange factor...
July 7, 2017: ELife
https://www.readbyqxmd.com/read/28680904/risk-factors-associated-with-outpatient-parenteral-antibiotic-therapy-program-failure-among-intravenous-drug-users
#4
Deanna J Buehrle, Ryan K Shields, Neel Shah, Christopher Shoff, Kathleen Sheridan
Sixty-one percent of intravenous drug users (IVDUs) who received outpatient parenteral antibiotic therapy (OPAT) failed treatment. Hospital readmission and adverse drug reactions occurred in 25%. By multivariate analysis, time since last IVDU was associated with failure (P = .04). Intravenous drug users requiring OPAT are at high risk for failure; additional studies are needed to explore alternatives.
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28614298/erf-mutations-reveal-a-balance-of-ets-factors-controlling-prostate-oncogenesis
#5
Rohit Bose, Wouter R Karthaus, Joshua Armenia, Wassim Abida, Phillip J Iaquinta, Zeda Zhang, John Wongvipat, Elizabeth V Wasmuth, Neel Shah, Patrick S Sullivan, Michael G Doran, Ping Wang, Anna Patruno, Yilin Zhao, Deyou Zheng, Nikolaus Schultz, Charles L Sawyers
Half of all prostate cancers are caused by the TMPRSS2-ERG gene-fusion, which enables androgens to drive expression of the normally silent E26 transformation-specific (ETS) transcription factor ERG in prostate cells. Recent genomic landscape studies of such cancers have reported recurrent point mutations and focal deletions of another ETS member, the ETS2 repressor factor ERF. Here we show these ERF mutations cause decreased protein stability and mostly occur in tumours without ERG upregulation. ERF loss recapitulates the morphological and phenotypic features of ERG gain in normal mouse prostate cells, including expansion of the androgen receptor transcriptional repertoire, and ERF has tumour suppressor activity in the same genetic background of Pten loss that yields oncogenic activity by ERG...
June 29, 2017: Nature
https://www.readbyqxmd.com/read/28549612/variation-in-cesarean-birth-rates-by-labor-and-delivery-nurses
#6
Joyce K Edmonds, Michele O'Hara, Sean P Clarke, Neel Shah
OBJECTIVE: To examine variation in the cesarean birth rates of women cared for by labor and delivery nurses. DESIGN: Retrospective cohort study. SETTING: One high-volume labor and delivery unit at an academic medical center in a major metropolitan area. PARTICIPANTS: Labor and delivery nurses who cared for nulliparous women who gave birth to term, singleton fetuses in vertex presentation. METHODS: Data were extracted from electronic hospital birth records from January 1, 2013 through June 30, 2015...
May 23, 2017: Journal of Obstetric, Gynecologic, and Neonatal Nursing: JOGNN
https://www.readbyqxmd.com/read/28540148/clinical-and-microbiological-characteristics-of-bacteroides-prosthetic-joint-infections
#7
Neel Shah, Douglas Osmon, Aaron J Tande, James Steckelberg, Rafael Sierra, Randall Walker, Elie F Berbari
Clinical and microbiological characteristics of patients with Bacteroides prosthetic joint infection (PJI) have not been well described in the literature. The aim of this retrospective cohort study was to assess the outcome of patients with Bacteroides PJI and to review risk factors associated with failure of therapy. Between 1/1969 and 12/2012, 20 episodes of Bacteroides PJI in 17 patients were identified at our institution. The mean age of the patients in this cohort at the time of diagnosis was 55.6 years; 59% (n=10) had knee involvement...
2017: Journal of bone and joint infection
https://www.readbyqxmd.com/read/28334585/uptake-and-utilization-of-practice-guidelines-in-hospitals-in-the-united-states-the-case-of-routine-episiotomy
#8
Katy B Kozhimannil, Pinar Karaca-Mandic, Cori J Blauer-Peterson, Neel T Shah, Jonathan M Snowden
BACKGROUND: The gap between publishing and implementing guidelines differs based on practice setting, including hospital geography and teaching status. On March 31, 2006, a Practice Bulletin published by the American College of Obstetricians and Gynecologists (ACOG) recommended against the routine use of episiotomy and urged clinicians to make judicious decisions to restrict the use of the procedure. OBJECTIVE: This study investigated changes in trends of episiotomy use before and after the ACOG Practice Guideline was issued in 2006, focusing on differences by hospital geographic location (rural/urban) and teaching status...
January 2017: Joint Commission Journal on Quality and Patient Safety
https://www.readbyqxmd.com/read/28334563/quality-improvement-initiatives-lead-to-reduction-in-nulliparous-term-singleton-vertex-cesarean-delivery-rate
#9
Mary A Vadnais, Michele R Hacker, Neel T Shah, JoAnn Jordan, Anna M Modest, Molly Siegel, Toni H Golen
BACKGROUND: The nulliparous term singleton vertex (NTSV) cesarean delivery rate has been recognized as a meaningful benchmark. Variation in the NTSV cesarean delivery rate among hospitals and providers suggests many hospitals may be able to safely improve their rates. The NTSV cesarean delivery rate at the authors' institution was higher than state and national averages. This study was conducted to determine the influence of a set of quality improvement interventions on the NTSV cesarean delivery rate...
February 2017: Joint Commission Journal on Quality and Patient Safety
https://www.readbyqxmd.com/read/28286165/disparate-domains-cryptogenic-invasive-klebsiella-pneumoniae-liver-abscess-syndrome
#10
Jacquelyn R Sink, William A Pasculle, Neel B Shah, Emanuel N Vergis
No abstract text is available yet for this article.
March 10, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28278205/complement-effectors-c5a-and-c3a-in-cystic-fibrosis-lung-fluid-correlate-with-disease-severity
#11
Pamela S Hair, Laura A Sass, Turaj Vazifedan, Tushar A Shah, Neel K Krishna, Kenji M Cunnion
In cystic fibrosis (CF), lung damage is mediated by a cycle of obstruction, infection, inflammation and tissue destruction. The complement system is a major mediator of inflammation for many diseases with the effectors C5a and C3a often playing important roles. We have previously shown in a small pilot study that CF sputum soluble fraction concentrations of C5a and C3a were associated with clinical measures of CF disease. Here we report a much larger study of 34 CF subjects providing 169 testable sputum samples allowing longitudinal evaluation comparing C5a and C3a with clinical markers...
2017: PloS One
https://www.readbyqxmd.com/read/28249664/the-eyes-are-useless-when-the-mind-is%C3%A2-blind-a-rare-case-of-anton-babinski-syndrome-in-hepatic-encephalopathy
#12
Sanlly Perez-Ceballos, Francisco T Fernandez-Rodriguez, Neel Shah, Priyanka Wani-Parekh, Lyan Gondin-Hernandez, Jose L Gonzalez-Martinez, Mateo Porres-Muñoz, Mateo Porres-Aguilar
No abstract text is available yet for this article.
February 26, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28221108/pnca-gene-mutations-associated-with-pyrazinamide-resistance-in-drug-resistant-tuberculosis-south-africa-and-georgia
#13
Salim Allana, Elena Shashkina, Barun Mathema, Nino Bablishvili, Nestani Tukvadze, N Sarita Shah, Russell R Kempker, Henry M Blumberg, Pravi Moodley, Koleka Mlisana, James C M Brust, Neel R Gandhi
Although pyrazinamide is commonly used for tuberculosis treatment, drug-susceptibility testing is not routinely available. We found polymorphisms in the pncA gene for 70% of multidrug-resistant and 96% of extensively drug-resistant Mycobacterium tuberculosis isolates from South Africa and Georgia. Assessment of pyrazinamide susceptibility may be prudent before using it in regimens for drug-resistant tuberculosis.
March 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28124390/how-do-pregnant-women-use-quality-measures-when-choosing-their-obstetric-provider
#14
Rebecca A Gourevitch, Ateev Mehrotra, Grace Galvin, Melinda Karp, Avery Plough, Neel T Shah
BACKGROUND: Given increased public reporting of the wide variation in hospital obstetric quality, we sought to understand how women incorporate quality measures into their selection of an obstetric hospital. METHODS: We surveyed 6141 women through Ovia Pregnancy, an application used by women to track their pregnancy. We used t tests and chi-square tests to compare response patterns by age, parity, and risk status. RESULTS: Most respondents (73...
June 2017: Birth
https://www.readbyqxmd.com/read/28099825/transmission-of-extensively-drug-resistant-tuberculosis-in-south-africa
#15
N Sarita Shah, Sara C Auld, James C M Brust, Barun Mathema, Nazir Ismail, Pravi Moodley, Koleka Mlisana, Salim Allana, Angela Campbell, Thuli Mthiyane, Natashia Morris, Primrose Mpangase, Hermina van der Meulen, Shaheed V Omar, Tyler S Brown, Apurva Narechania, Elena Shaskina, Thandi Kapwata, Barry Kreiswirth, Neel R Gandhi
BACKGROUND: Drug-resistant tuberculosis threatens recent gains in the treatment of tuberculosis and human immunodeficiency virus (HIV) infection worldwide. A widespread epidemic of extensively drug-resistant (XDR) tuberculosis is occurring in South Africa, where cases have increased substantially since 2002. The factors driving this rapid increase have not been fully elucidated, but such knowledge is needed to guide public health interventions. METHODS: We conducted a prospective study involving 404 participants in KwaZulu-Natal Province, South Africa, with a diagnosis of XDR tuberculosis between 2011 and 2014...
January 19, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28059768/sox2-promotes-lineage-plasticity-and-antiandrogen-resistance-in-tp53-and-rb1-deficient-prostate-cancer
#16
Ping Mu, Zeda Zhang, Matteo Benelli, Wouter R Karthaus, Elizabeth Hoover, Chi-Chao Chen, John Wongvipat, Sheng-Yu Ku, Dong Gao, Zhen Cao, Neel Shah, Elizabeth J Adams, Wassim Abida, Philip A Watson, Davide Prandi, Chun-Hao Huang, Elisa de Stanchina, Scott W Lowe, Leigh Ellis, Himisha Beltran, Mark A Rubin, David W Goodrich, Francesca Demichelis, Charles L Sawyers
Some cancers evade targeted therapies through a mechanism known as lineage plasticity, whereby tumor cells acquire phenotypic characteristics of a cell lineage whose survival no longer depends on the drug target. We use in vitro and in vivo human prostate cancer models to show that these tumors can develop resistance to the antiandrogen drug enzalutamide by a phenotypic shift from androgen receptor (AR)-dependent luminal epithelial cells to AR-independent basal-like cells. This lineage plasticity is enabled by the loss of TP53 and RB1 function, is mediated by increased expression of the reprogramming transcription factor SOX2, and can be reversed by restoring TP53 and RB1 function or by inhibiting SOX2 expression...
January 6, 2017: Science
https://www.readbyqxmd.com/read/28029920/more-on-treatment-outcomes-in-multidrug-resistant-tuberculosis
#17
LETTER
James C M Brust, N Sarita Shah, Neel R Gandhi
No abstract text is available yet for this article.
December 29, 2016: New England Journal of Medicine
https://www.readbyqxmd.com/read/28002390/therapeutic-hypothermia-modulates-complement-factor-c3a-and-c5a-levels-in-a-rat-model-of-hypoxic-ischemic-encephalopathy
#18
Tushar A Shah, Jasmine E Nejad, Haree K Pallera, Frank A Lattanzio, Rawad Farhat, Parvathi S Kumar, Pamela S Hair, W Thomas Bass, Neel K Krishna
BACKGROUND: Therapeutic hypothermia (HT) is the only intervention that improves outcomes in neonatal hypoxic-ischemic encephalopathy (HIE). However, the multifactorial mechanisms by which HT impacts HIE are incompletely understood. The complement system plays a major role in the pathogenesis of ischemia-reperfusion injuries such as HIE. We have previously demonstrated that HT modulates complement activity in vitro. METHODS: Term equivalent rat pups were subjected to unilateral carotid ligation followed by hypoxia (8% O2) for 45 min to simulate HIE...
April 2017: Pediatric Research
https://www.readbyqxmd.com/read/27862256/cost-analysis-of-following-up-incomplete-low-risk-fetal-anatomy-ultrasounds
#19
Karen O'Brien, Scott A Shainker, Anna M Modest, Melissa H Spiel, Nina Resetkova, Neel Shah, Michele R Hacker
OBJECTIVES: To examine the clinical utility and cost of follow-up ultrasounds performed as a result of suboptimal views at the time of initial second-trimester ultrasound in a cohort of low-risk pregnant women. METHODS: We conducted a retrospective cohort study of women at low risk for fetal structural anomalies who had second-trimester ultrasounds at 16 to less than 24 weeks of gestation from 2011 to 2013. We determined the probability of women having follow-up ultrasounds as a result of suboptimal views at the time of the initial second-trimester ultrasound, and calculated the probability of detecting an anomaly on follow-up ultrasound...
March 2017: Birth
https://www.readbyqxmd.com/read/27757919/comparing-biologic-cost-per-treated-patient-across-indications-among-adult-us-managed-care-patients-a-retrospective-cohort-study
#20
Tao Gu, Neel Shah, Gaurav Deshpande, Derek H Tang, Debra F Eisenberg
BACKGROUND: The relative cost of biologics in the treatment of autoimmune disorders, including rheumatoid arthritis, psoriatic arthritis, psoriasis, and ankylosing spondylitis, is a key consideration for managed care payers. OBJECTIVES: Our objective was to estimate biologic costs and treatment patterns in US managed care patients with rheumatoid arthritis, psoriatic arthritis, psoriasis, and/or ankylosing spondylitis. METHODS: This retrospective study used administrative claims data from the HealthCore Integrated Research Database (HIRD(SM)) for adults with rheumatoid arthritis, psoriatic arthritis, psoriasis, and/or ankylosing spondylitis who received abatacept, adalimumab, certolizumab, etanercept, golimumab, infliximab, rituximab, tocilizumab, or ustekinumab between 1 July 2009 and 31 January 2013...
December 2016: Drugs—Real World Outcomes
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