Amar Singh

ORCID: 0000-0002-4721-1513
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About
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Research Areas
  • Prostate Cancer Diagnosis and Treatment
  • Tuberculosis Research and Epidemiology
  • Immune Cell Function and Interaction
  • Acute Myeloid Leukemia Research
  • Prostate Cancer Treatment and Research
  • Cancer Immunotherapy and Biomarkers
  • Renal cell carcinoma treatment
  • T-cell and B-cell Immunology
  • Acute Lymphoblastic Leukemia research
  • Pancreatic function and diabetes
  • Bladder and Urothelial Cancer Treatments
  • Mycobacterium research and diagnosis
  • Pediatric Urology and Nephrology Studies
  • Urological Disorders and Treatments
  • Renal and related cancers
  • Diabetes and associated disorders
  • Xenotransplantation and immune response
  • Antimicrobial Peptides and Activities
  • Diagnosis and treatment of tuberculosis
  • Neuroinflammation and Neurodegeneration Mechanisms
  • Genital Health and Disease
  • Adrenal and Paraganglionic Tumors
  • Immunotherapy and Immune Responses
  • Urinary and Genital Oncology Studies
  • Bariatric Surgery and Outcomes

All India Institute of Medical Sciences Bhopal
2007-2024

University of Minnesota
2015-2024

All India Institute of Medical Sciences
2011-2024

Erlanger Health System
2014-2024

All India Institute of Medical Sciences Raipur
2007-2024

University of Tennessee at Chattanooga
2014-2024

Cancer Research Center
2023

Mission Bio (United States)
2023

The Royal Wolverhampton NHS Trust
2021

DR. B.R.A. Institute Rotary Cancer Hospital
2021

Background. Overexpression of programmed death 1 (PD-1) receptor is thought to inhibit the effector T-cell response in human tuberculosis. However, precise mechanism such inhibition remains unclear. The present study addresses role PD-1 dampening host function among patients with pulmonary Methods. Expression and its ligands (PD-L1/L2) on T cells, B monocytes was evaluated by flow cytometry (FACS). In vitro stimulation peripheral blood mononuclear cells presence Mycobacterium tuberculosis...

10.1093/infdis/jit206 article EN The Journal of Infectious Diseases 2013-05-09

The inadequacy of effector T-cell response in containment tubercle bacilli is believed to result the development disseminated forms tuberculosis (TB), such as miliary (MTB). Regulatory T cells (Treg) plausibly play a critical role immunopathogenesis TB by suppression immune against Mycobacterium at pathologic site(s). To understand Treg tuberculosis, we studied frequency and function derived from local disease site specimens (LDSS) patients with pleural effusion MTB clinical models contained...

10.1164/rccm.200804-529oc article EN American Journal of Respiratory and Critical Care Medicine 2009-02-27

CD4+CD25+Foxp3+ Regulatory T cells (Treg) and programmed death-1 (PD-1) molecules have emerged as pivotal players in immune suppression of chronic diseases. However, their impact on the disease severity, therapeutic response restoration human tuberculosis remains unclear. Here, we describe possible role Treg cells, M. driven expansion contribution PD-1 pathway to suppressive function among pulmonary (PTB) patients. Multicolor flow cytometry, cell culture, sorting ELISA were employed execute...

10.1371/journal.pone.0044728 article EN cc-by PLoS ONE 2012-09-19

No AccessJournal of UrologyCLINICAL UROLOGY: Urologists at Work1 Feb 2004Use Gelatin Matrix Thrombin Tissue Sealant as an Effective Hemostatic Agent During Laparoscopic Partial Nephrectomy JOHN B. BAK, AMAR SINGH, and BIJAN SHEKARRIZ BAKJOHN BAK , SINGHAMAR SINGH SHEKARRIZBIJAN View All Author Informationhttps://doi.org/10.1097/01.ju.0000104800.97009.c6AboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract...

10.1097/01.ju.0000104800.97009.c6 article EN The Journal of Urology 2004-02-01

Suppression of T cell response is thought to be involved in the pathogenesis visceral leishmaniasis (VL). Regulatory (Treg) mediated immune-suppression reported animal models Leishmania infection. However, their precise role among human patients still requires pathologic validation. The present study aimed at understanding frequency dynamics and function Treg cells blood bone marrow (BM) VL patients. included 42 parasitologically confirmed patients, 17 healthy contact 9 normal specimens...

10.1371/journal.pone.0031551 article EN cc-by PLoS ONE 2012-02-08

Previous work from our laboratory has demonstrated that during acute viral brain infection, glial cells modulate antiviral T cell effector responses through the PD-1: PD-L1 pathway, thereby limiting deleterious consequences of unrestrained neuroinflammation. Here, we evaluated pathway in development brain-resident memory (bTRM) following murine cytomegalovirus (MCMV) infection. Flow cytometric analysis immune was performed at 7, 14, and 30 days post-infection (dpi) to assess shift...

10.1186/s12974-017-0860-3 article EN cc-by Journal of Neuroinflammation 2017-04-13

To evaluate the impact of a genomic classifier (GC) test for predicting metastasis risk after radical prostatectomy (RP) on urologists' decision-making about adjuvant treatment patients with high-risk prostate cancer.Patient case history was extracted from medical records each 145 pT3 disease or positive surgical margins (PSMs) RP treated by six high-volume urologists, five community practices. GC results were available 122 (84%) these patients. US board-certified urologists (n = 107)...

10.1111/bju.12789 article EN BJU International 2014-04-30

Abstract Immune tolerance to allografts has been pursued for decades as an important goal in transplantation. Administration of apoptotic donor splenocytes effectively induces antigen-specific murine studies. Here we show that two peritransplant infusions leukocytes under short-term immunotherapy with antagonistic anti-CD40 antibody 2C10R4, rapamycin, soluble tumor necrosis factor receptor and anti-interleukin 6 induce long-term (≥1 year) islet 5 nonsensitized, MHC class I-disparate, one II...

10.1038/s41467-019-11338-y article EN cc-by Nature Communications 2019-08-02

Though islet transplantation is now being considered as a gold standard to cure type 1 diabetes in patients without the threat of unaware hypoglycemia and severe episode, post-transplantation loss due intra-islet vasculature during isolation process compromises full functionality transplanted mass. Therefore, besides instant blood-mediated inflammatory reaction (IBMIR) induced within first 60 minutes intraportal vein, two weeks avascular window, prior adequate vascularization, responsible...

10.18103/mra.v13i2.6230 article EN Medical Research Archives 2025-01-01

We prospectively evaluated the impact of body mass index (BMI) and prostate gland size on operative time, estimated blood loss (EBL) hospital stay (LOS) in patients undergoing laparoscopic radical prostatectomy at our institution.A total 70 consecutive prostatectomies were performed institution from May 2002 to April 2003. Patients who had pelvic lymphadenectomy excluded. A 62 cases available for analysis. Two converted open surgery. Perioperative data each group recorded, including patient...

10.1097/01.ju.0000150101.95236.35 article EN The Journal of Urology 2005-01-07

No AccessJournal of UrologyAdult Urology: Oncology: Renal/Upper Tract/Bladder1 May 2005HIGHER THAN EXPECTED ASSOCIATION OF CLINICAL PROSTATE AND BLADDER CANCERSis companion ofHigher Than Expected Association Clinical Prostate and Bladder Cancers AMAR SINGH, YOSHIHISA KINOSHITA, PETER M. ROVITO, STEVE LANDAS, JON SILBERSTEIN, IMAD NSOULI, CHING Y. WANG, GABRIEL P. HAAS SINGHAMAR SINGH More articles by this author , KINOSHITAYOSHIHISA KINOSHITA ROVITOPETER ROVITO LANDASSTEVE LANDAS...

10.1097/01.ju.0000154700.80042.c6 article EN The Journal of Urology 2005-04-01

Peptidoglycan recognition proteins (PGRPs) are involved in the of pathogen-associated molecular patterns. The well known patterns include LPS from Gram-negative bacteria and lipoteichoic acid (LTA) Gram-positive bacteria. In this work, crystal structures two complexes short form camel PGRP (CPGRP-S) with LTA determined at 1.7- 2.1-Å resolutions, respectively, reported. Both compounds were held firmly inside complex formed four CPGRP-S molecules designated A, B, C, D. binding cleft is located...

10.1074/jbc.m111.228163 article EN cc-by Journal of Biological Chemistry 2011-03-22

Accumulation and retention of regulatory T-cells (Tregs) has been reported within post viral-encephalitic brains, however, the full extent to which these cells modulate neuroinflammation is yet be elucidated. Here, we used Foxp3-DTR (diphtheria toxin receptor) knock-in transgenic mice, upon administration low dose diphtheria (DTx) results in specific deletion Tregs. We investigated proliferation status various immune cell subtypes inflamed central nervous system (CNS) tissue. Depletion Tregs...

10.1371/journal.pone.0145457 article EN cc-by PLoS ONE 2015-12-31

Objective:To assess the effect of an individualized genomic classifier (GC) test, for predicting metastasis following radical prostatectomy (RP), on urologists' adjuvant treatment decisions when caring high-risk patients.

10.1185/03007995.2014.919908 article EN Current Medical Research and Opinion 2014-05-06

Ureteral access sheaths were developed to facilitate difficult ureteroscopic in adults. We report our use of the ureteral sheath during standard procedures pediatric stone population.Eight patients underwent flexible ureteroscopy and holmium laser lithotripsy for symptomatic renal calculi between October 2003 2004. Average patient age was 9.3 years (range 4 13). There males females. Five 8 had bilateral stones endoscopic treatment at same operation. A 14Fr 20 cm Flexor used dilation ureter....

10.1016/s0022-5347(05)00406-4 article EN The Journal of Urology 2006-02-10

Epithelial–mesenchymal transition (EMT) is a highly dynamic process that occurs under normal circumstances; however, EMT also known to play central role in tumor progression and metastasis. Furthermore, of immune microenvironment (TIME) shaping anticancer immunity inducing the well recognized. Understanding key features critical for development effective therapeutic interventions. Given escape cancer treatment, we have carried out pan-cancer TIME analysis The Cancer Genome Atlas (TCGA)...

10.3389/fonc.2021.793881 article EN cc-by Frontiers in Oncology 2022-01-12
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