Publications by authors named "Payam Tabarsi"

Background: Tuberculosis (TB) poses a significant public health challenge, particularly because it can exist in an asymptomatic latent phase. Latent TB infection indicates the presence of Mycobacterium tuberculosis without clinical symptoms. Effectively distinguishing between active and latent TB is essential, especially in regions with high TB prevalence, as it may help reduce transmission rates.

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Background And Objectives: Migration, as an important social determinant in the field of health, plays a crucial role in the non-eradication of tuberculosis worldwide. Therefore, it is essential to identify the factors related to tuberculosis treatment in immigrants to effectively combat this disease. However no comprehensive study has focused on this issue.

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Article Synopsis
  • * A sample of 305 elderly patients with tuberculosis, along with their family caregivers, was analyzed using various questionnaires to assess health, caregiver burden, and medication adherence levels.
  • * Findings revealed that nearly 45% of the elderly had low medication adherence, with marital status influencing adherence levels, as married individuals showed significantly better adherence compared to those who were single or widowed.
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  • Patients with immunodeficiency are at a higher risk for severe outcomes from SARS-CoV-2 compared to healthy individuals.
  • A study evaluated immune responses in various immunocompromised patients, showing they had significantly lower T-cell and B-cell responses to the virus compared to healthy controls.
  • The findings highlight the importance of additional precautions for immunocompromised patients to protect them from COVID-19 due to their reduced immune function.
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Article Synopsis
  • A 56-year-old man with Good's syndrome, characterized by a thymoma, developed rare co-infections of cutaneous cytomegalovirus (CMV) and varicella-zoster virus (VZV), showing painful skin lesions.
  • Histopathological tests confirmed herpes virus infection, and immunohistochemistry revealed CMV in endothelial cells.
  • The patient was successfully treated with intravenous immunoglobulin and ganciclovir, leading to complete resolution of symptoms and improved prognosis upon follow-up.
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Key Clinical Message: Good's syndrome (GS) in conjunction with a severe COVID-19 infection, shedding light on the complexities of managing this rare condition that combines thymoma and immunodeficiency.

Abstract: This study delves into the clinical presentation and management of a 63-year-old male diagnosed with Good's syndrome (GS) amid a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. GS, an uncommon association between thymoma and immunodeficiency, remains a clinical mystery, necessitating increased awareness and understanding.

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Background: The overexpression of efflux pumps (Eps) was reported to contribute to multidrug resistant tuberculosis (MDR-TB). Increases in Eps that expel structurally unrelated drugs contribute to reduced susceptibility by decreasing the intracellular concentration of antibiotics. In the present study, an association of mycobacterial membrane protein (MmpS5-MmpL5) Ep and its gene regulator (Rv0678) was investigated in MDR-tuberculosis isolates.

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The coronavirus disease of 2019 (COVID-19) resulted from an infection by severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2) which is the main cause of acute respiratory distress syndrome (ARDS) in global population from 2019 on. It may contribute to higher rate of death among the patients with immunodeficiency based on recent reports. In addition, Good syndrome (GS) as a result of thymoma removal might cause in some long-lasting microbial infections.

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Background: SpikoGen® is a recombinant subunit spike protein ectodomain vaccine manufactured in insect cells and formulated with the novel polysaccharide-based Advax-CpG55.2 adjuvant. This study aimed to compare the immunogenicity and safety of SpikoGen® vaccine in children, adolescents and young adults.

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Tocilizumab and baricitinib are considered standard treatments for hospitalized COVID-19 patients with an inflammatory status. However, the effects of co-administering these medications aiming for more rapid patient recovery are controversial among practitioners. The potential benefits include the rapid improvement of patients and regulation of the immune system, and the potential risks include the increased chance of serious adverse events, including infections.

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Background: We aimed to evaluate the accuracy of genotyping of species by the spliced leader mini-exon gene.

Methods: Suspected leishmaniasis patients, referred to Masieh Daneshvary Hospital, Tehran, Iran were included from May 2017 to September 2021. The species were genotyped by PCRRFLP based on the SL mini-exon gene and the region of gene and compared with the sequencing results.

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Background: Anti-tuberculosis drug-induced hepatotoxicity can result from genetic polymorphism of the isoniazid (INH) metabolizing enzyme. This study aimed to determine the effect of genetic polymorphism of N-acetyltransferase 2 () and cytochrome P450 2E1 () genes on serum isoniazid level and drug-induced hepatotoxicity.

Methods: A cross-sectional study was conducted on 120 patients (with and without hepatotoxicity) with pulmonary tuberculosis from June 2019 to April 2022 in Tehran (Iran).

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Article Synopsis
  • * Participants were randomly assigned to receive either the 5 µg vaccine or a placebo, with results showing a 50.2% efficacy against symptomatic COVID-19 and higher rates against severe and critical cases.
  • * Safety data indicated that a significant number of adverse events were reported, but no deaths occurred in the vaccinated group, compared to two deaths in the placebo group.
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Pulmonary aspergillosis is a life-threatening fungal infection with worldwide distribution. In the present study, clinical epidemiology of pulmonary aspergillosis and antifungal susceptibility of etiologic Aspergillus species were evaluated in one-hundred fifty patients with special focus on the frequency of voriconazole resistance. All the cases were confirmed by the clinical pictures, laboratory findings, and isolation of etiologic Aspergillus species which belonged to two major species, i.

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Background: Although many aspects of the COVID-19 disease have not yet been clarified, dysregulation of the immune system may play a crucial role in the progression of the disease. In this study, the lymphocyte subsets were evaluated in patients with different severities of COVID-19.

Materials And Methods: In this prospective study, the frequencies of peripheral lymphocyte subsets (CD3, CD4, and CD8 T cells; CD19 and CD20 B cells; CD16/CD56 NK cells, and CD4/CD25/FOXP3 regulatory T cells) were evaluated in 67 patients with confirmed COVID-19 on the first day of their admission.

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COVID-19, caused by SARS-CoV-2, requires new approaches to control the disease. Programmed cell death protein (PD-1) and cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) play important roles in T-cell exhaustion in severe COVID-19. This study evaluated the frequency of whole blood lymphocytes expressing PD-1 and CTLA-4 in COVID-19 patients upon admission to the intensive care unit (ICU) (i.

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Background: This study aims to investigate the clinical and demographic features of underlying medical conditions and the potential relationship between underlying diseases and the increased rate of morbidity and mortality due to COVID-19.

Materials And Methods: This study was conducted on 350 COVID-19 patients hospitalized at the Masih Daneshvari Hospital from February-July 2021. All participants had confirmed COVID-19 diagnosis based on symptoms and/or positive PCR test or chest X-ray results.

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Methods: This qualitative study was conducted in two phases, using an integrative literature review and individual interviews. Studies were gathered without time restriction from MEDLINE databases, Institute for Scientific Information (ISI), Google Scholar, Scopus, and EMBASE, as well as national databases, including Scientific Information Database and Magiran. The findings of 38 studies that met the inclusion criteria were analyzed through the conventional content analysis method based on the ecological approach.

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The COVID-19 pandemic has caused significant disruptions in TB services across the globe. Like many other countries, TB case notifications decreased during the pandemic in Iran. In this paper, we describe two cases of concomitant COVID-19 and TB infection whose diagnosis of pulmonary TB was delayed amid the pandemic.

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Background And Purpose: Diabetes and immunosuppressive diseases have been reported as increased risk factors for developing invasive pulmonary tuberculosis and mucormycosis.

Case Report: We presented here a case of a 55-year-old uncontrolled diabetic male with rhinosinus mucormycosis and pulmonary TB coinfection. Maxillary and ethmoid sinus involvement was observed in paranasal computed tomography.

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The pandemic of coronavirus disease in 2019 has led to a global crisis. COVID-19 shows distinct clinical manifestations of the severity of symptoms. Numerous patients with no associated risk factors demonstrate acute respiratory distress syndrome (ARDS).

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Background: Recent pandemic of coronavirus SARS-CoV-2 (COVID-19) caused limitations in the country's strategies to fight against mycobacterial infections. The aim of this study was to compare the suspected tuberculosis (TB) pulmonary patients before and during the COVID-19 pandemic (January 2018-December 2021) who were referred to the National Reference TB Laboratory (NRL TB), Tehran, Iran. The mycobacterial isolated strains were identified and compared with previous data.

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Background: The success of treatment strategies to control the disease relapse requires determining factors affecting the incident short-time and long-time of disease relapse. Therefore, this study was aimed to identify the factors affecting of short-and long-time of occurrence of disease relapse in patients with tuberculosis (TB) using a parametric mixture cure model.

Materials And Methods: In this historical cohort study; the data was collected from 4564 patients with TB who referred to the Tuberculosis and Lung Diseases Research Center of Dr.

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Introduction: Cytokine storm and critical COVID-19 pneumonia are caused in at least 10% of patients by inborn errors of or auto-Abs to type I IFNs. The pathogenesis of life-threatening COVID-19 pneumonia in other patients remains unknown.

Methods: This study was conducted at Masih Daneshvari Hospital, Tehran, Iran.

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Objectives: We sought to investigate the efficacy and safety of SpikoGen®, a subunit coronavirus disease 2019 (COVID-19) vaccine composed of a recombinant severe acute respiratory syndrome coronavirus 2 spike protein with Advax-CpG55.2™ adjuvant.

Methods: This randomized, placebo-controlled, double-blind, phase 3 trial was conducted on 16 876 participants randomized (3:1) to receive two intramuscular doses of SpikoGen® or a saline placebo 21 days apart.

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