Nathan Visweshwar

Dr. Nathan Visweshwar

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Research Focus & Metrics

Academic Career Length

21Years (2006-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 June 2017 in Journal for ImmunoTherapy of Cancer
Verified
Journal Article
Open access
PDF file
JSJose Sandoval-Sus
Jose Sandoval-Sus
FMFrancis Mogollon-Duffo
Francis Mogollon-Duffo
APAnkita Patel
Ankita Patel
NVNathan Visweshwar
Nathan Visweshwar
DLDamian Abel Laber
Damian Abel Laber
MJMichael V. Jagal
Michael V. Jagal
Background We report the first case to our knowledge of a patient with relapsed/refractory classical hodgkin lymphoma and liver failure with encephalopathy along with human immunodeficiency virus/acquired immunodeficiency syndrome infection, successfully treated with nivolumab without major side effects and encouraging prolonged disease control. Case presentation In December 2015, at the time of the patient’s progression from his Hodgkin lymphoma after fourth line treatment, he developed persistent fevers, abdominal distension, jaundice and worsening of his liver function tests. Magnetic resonance imaging of abdomen/pelvis demonstrated hepatomegaly with innumerable new liver lesions, splenomegaly with multiple splenic nodules and several new mediastinal, intraperitoneal and retroperitoneal lymphadenopathy. In accordance with the patient’s wishes before admission, and after agreement with the family, nivolumab (3 mg/kg every 2 weeks) was given. Of note, antiretroviral therapy was on hold due to liver function tests, his viral load was undectable and cluster of differentiation 4 counts were 103/uL at the time of nivolumab administration. One week after the first dose of nivolumab both his hepatic encephalopathy and constitutional symptoms started to improve, and after 2 doses, (January 2016) his LFTs were almost back to normal. After 5 months of nivolumab treatment (10 doses), restaging (computerized tomography scans of neck, chest, abdomen, pelvis) done on May 2016 showed resolution of hepatosplenomegaly with two residual small hepatic lesions, heterogeneous spleen with no splenic lesions, and stable non-enlarged retroperitoneal lymph nodes without intraabdominal lymphadenopathy; consistent with partial response. Conclusions We report a case of a patient with human immunodeficiency virus/acquired immunodeficiency syndrome -related relapsed/refractory classical Hodgkin lymphoma and acute liver failure with encephalopathy successfully treated with nivolumab after failing all standard therapeutic options. Unlike classic cytotoxic chemotherapy, which relies on preserved organ function to ameliorate potential severe side effects (i.e. myelosuppression), elimination of monoclonal antibodies is fairly independent of baseline renal and hepatic function since they are usually metabolized by circulating phagocytes and/or by their target antigen-expressing cell.

4 November 2017 in Annals of Hematology
Verified
Journal Article
Closed access
PDF file
NVNathan Visweshwar
Nathan Visweshwar
MJMichael Jaglal
Michael Jaglal
LSLubomir Sokol
Lubomir Sokol
KZKenneth Zuckerman
Kenneth Zuckerman

29 July 2022 in Blood Coagulation & Fibrinolysis
Verified
Journal Article
Open access
NVNathan Visweshwar
Nathan Visweshwar
IAIrmel Ayala
Irmel Ayala
MJMichael Jaglal
Michael Jaglal
RKRobert Killeen
Robert Killeen
LSLubomir Sokol
Lubomir Sokol
AMArumugam Manoharan
Arumugam Manoharan
Current diagnosis of primary immune thrombocytopenia (ITP) is presumptive, centered on excluding other causes of thrombocytopenia. The diagnosis of ITP is challenging because of the wide range of potential inherited and acquired causes of thrombocytopenia. The treatment of ITP is empiric with steroids, high-dose immunoglobulin, immunosuppressants and thrombopoietin agonists with potential side effects. We searched Medline and Cochrane databases, reviewed the study data and analyzed the individual diagnostic tests for their evidence-based role in the diagnosis of ITP. We then analyzed the strength of the scientific evidence for each diagnostic test in the diagnosis of ITP and identified gaps in the diagnostic accuracy. The diagnostic challenges in ITP include: insufficient evidence for the individual test for diagnosis of ITP, no standardized protocol/guideline for diagnosis, hurdles in accessing the available resources and failure to correlate the clinical data while reviewing the blood smear. We did not identify a diagnostic test that clinicians can use to confirm the diagnosis of ITP. In the absence of a diagnostic test of proven value in ITP, the clinician is best served by a comprehensive history and physical examination, complete blood count and review of the peripheral blood smear in evaluating thrombocytopenia.

28 January 2019 in Indian Journal of Hematology and Blood Transfusion
Verified
Journal Article
Open access
PDF file
NVNathan Visweshwar
Nathan Visweshwar
MJMichael Jaglal
Michael Jaglal
LSLubomir Sokol
Lubomir Sokol
BDBenjamin Djulbegovic
Benjamin Djulbegovic
Established guidelines exist for prevention and treatment of venous thromboembolism in hematological malignancies, but none for arterial thromboembolism. However, arterial and venous thromboembolism share the same provoking features—including altered procoagulant factors and defective fibrinolytic system. The morbidity for arterial thromboembolism is increasing in hematological malignancies, with the advent of immunomodulatory and targeted therapy. However, survival rate for hematological malignancy is improving. Consequently, as patients with hematological malignancies live longer, comorbidities including diabetes, hypertension and dyslipidemia, may accentuate arterial thrombosis. Thus far, the scientific literature on prophylaxis and treatment for arterial thromboembolism in hematological malignancies is limited. This review highlights the pathogenesis, incidence and clinical features of arterial thromboembolism in hematological malignancies.

23 July 2020 in Blood Coagulation & Fibrinolysis
Verified
Journal Article
Closed access
NVNathan Visweshwar
Nathan Visweshwar
YZYumeng Zhang
Yumeng Zhang
HJHazina Joseph
Hazina Joseph
MJMichael Jaglal
Michael Jaglal
IAIrmel Ayala
Irmel Ayala
Current management of chronic pain in patients with hemophilia (PWH) focuses on pain relief with analgesics and symptom control. The clinical practice of managing chronic pain in PWH varies considerably across hemophilia treatment centers. Here, we aim to study the appropriate intervention of hemophilic arthropathy for prevention and treatment of chronic pain in PWH. Medline, Embase, Cochrane databases were searched for randomized controlled trials, and the European Hemophilia Therapy Standardization Board, The World Federation of Hemophilia, Nordic Hemophilia Guidelines, American Society of the International Pain Physicians and the Medical and Scientific Advisory Council guidelines were studied through November 2019 for chronic pain in PWH for a narrative review. We found no standardized approach for the prevention and management of chronic pain in PWH. Evidence suggests that prophylactic factor concentrate therapy, programmed exercise and educational intervention may help PWH manage their chronic pain.

1 December 2018 in Clinical Genitourinary Cancer
Verified
Journal Article
Closed access
DLDamian Abel Laber
Damian Abel Laber
MCMin-Bin Chen
Min-Bin Chen
MJMichael Jaglal
Michael Jaglal
APAnkita Patel
Ankita Patel
NVNathan Visweshwar
Nathan Visweshwar