Publications by authors named "Rahbar A"

Electrical burns are an uncommon type of burn that can cause serious disabilities and mortality. This study aims to provide preventive strategies to investigate high-risk areas of electrical damage in Tehran Province. This is a descriptive cross-sectional study performed on patients with electrical burns referred to Shahid Motahari Educational and Medical Center during 2015-2017.

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Background: Efforts to understand atherosclerosis, a major cause of ischemic heart disease, have linked several lifestyle factors to increased risk for developing cardiovascular disease. Some studies suggest that cytomegalovirus (CMV), a widely prevalent herpesvirus, is reactivated in atherosclerotic plaques and associated with higher cardiovascular mortality risk. We aimed to explore whether CMV seropositivity and CMV-IgG antibody levels correlate with relevant biomarkers in a cohort of patients with myocardial infarction (MI) and matched controls.

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Background: Depression is associated with major adverse cardiovascular events (MACE). Whether longitudinal changes in depression affect MACE in patients with coronary heart disease (CHD) remains unknown.

Objectives: The authors evaluated the hypothesis that increasing or persistent depression predicts MACE in patients with CHD.

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Article Synopsis
  • - The study focused on how obesity and depressive symptoms are linked to chest pain (CP) in patients with nonobstructive coronary artery disease, revealing that 71.5% of participants experienced CP, with a particularly higher prevalence in those with obesity (77.6% vs. 67%).
  • - Out of 814 patients, obesity was found to significantly increase CP occurrence, especially in men, who showed more frequent and prevalent CP compared to women with similar obesity levels.
  • - The research concluded that both obesity and depressive symptoms are independently associated with CP, and the impact of obesity on CP in men was partially mediated by levels of depressive symptoms.
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Background: The management of revascularization of chronic total occlusions (CTOs) remains controversial. Whether specific patients gain survival benefit from CTO revascularization remains unknown.

Objectives: We investigated whether (i) patients with CTO have higher N terminal pro-brain natriuretic peptide (NT pro-BNP) levels than patients without CTO, (ii) in patients with CTO, NT pro-BNP levels predict adverse events, and (iii) those with elevated levels benefit from revascularization.

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Background: The role of circulating progenitor cells (CPC) in collateral formation that occurs in the presence of chronic total occlusions (CTO) of a coronary artery is not well established. In stable patients with a CTO, we investigated whether CPC levels are associated with (a) collateral development and (b) ischemic burden, as measured by circulating high sensitivity troponin-I (hsTn-I) levels.

Methods: CPCs were enumerated by flow cytometry as CD45 blood mononuclear cells expressing CD34 and both CD34 and CD133 epitopes.

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Objective: People with coronary artery disease (CAD) are at higher risk of cognitive impairment than those without CAD. Psychological stress is a risk factor for both conditions, and assessing the hemodynamic reactivity to mental stress could explain the link between stress and cognitive function.

Methods: A total of 779 individuals with stable CAD from two prospective cohort studies were included.

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Objectives: In countries with access to early antiretroviral treatment (ART), opportunistic infections caused by cytomegalovirus (CMV) in people living with HIV (PLWH) are becoming increasingly rare. As potential complications are severe, it is critical to remain aware of this important diagnosis. However, clinical characteristics and prognosis of CMV infection in PLWH in the era of modern ART have not been well described.

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Susceptibility to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections is highly variable and could be mediated by a cross-protective pre-immunity. We identified 14 cross-reactive peptides between SARS-CoV-2 and influenza A H1N1, H3N2, and human herpesvirus (HHV)-6A/B with potential relevance. The H1N1 peptide NGVEGF was identical to a peptide in the most critical receptor binding motif in SARS-CoV-2 spike protein that interacts with the angiotensin converting enzyme 2 receptor.

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Article Synopsis
  • - The study investigates the link between advanced hepatic fibrosis (AHF) and coronary artery disease (CAD), focusing on immune activation and systemic inflammation in affected patients.
  • - Among 3,406 CAD patients, 479 had AHF, which was associated with older age, lower body mass index, and worse kidney function, and led to significantly higher levels of inflammatory markers and increased risk of death.
  • - The research concluded that AHF is tied to increased inflammation and worse cardiovascular outcomes, with nearly half of the increased risk of cardiovascular death linked to immune activation, suggesting potential therapeutic targets to lower risks in CAD patients.
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Background The survival benefit of revascularization of chronic total occlusion (CTO) of the coronary arteries remains a subject of controversy. We measured high sensitivity troponin-I (hsTn-I) levels as an estimate of myocardial ischemia in patients with stable coronary artery disease, with the hypothesis that (1) patients with CTO have higher levels of hsTn-I than patients without CTO, (2) hsTn-I levels will predict adverse cardiovascular events in patients with CTO, and (3) patients with elevated hsTn-I levels will have a survival benefit from CTO revascularization. Methods and Results In 428 patients with stable coronary artery disease and CTO undergoing coronary angiography, adverse event rates were investigated.

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Colorectal cancer (CRC) is one of the most common and fatal types of cancer. Inflammation promotes CRC development, however, the underlying etiological factors are unknown. Human cytomegalovirus (HCMV), a virus that induces inflammation and other cancer hallmarks, has been detected in several types of malignancy, including CRC.

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Human cytomegalovirus (HCMV) has been detected in tissue samples from patients with glioblastoma but little is known about the systemic immunological response to HCMV in these patients. To investigate the presence and clinical significance of HCMV antibodies levels in plasma samples obtained from patients with brain tumors. HCMV-specific IgG and IgM antibody levels were determined in 59 plasma samples collected from brain tumor patients included in a prospective study and in 114 healthy individuals.

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Workplace burn injuries are associated with significant physical, psychological, and social challenges. This study was designed and conducted to investigate the common burn mechanisms, and training and safety conditions in the workplace. The study is a cross-sectional study that was performed on patients admitted to Shahid Motahari University Hospital in Tehran from August 2016 to October 2017.

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A platelet count of less than 150,000 per microliter of blood is called thrombocytopenia. Platelet count monitoring is essential in the care of burn patients. The aim of this study was to evaluate platelet count in groups of patients with different percentage of burns on the body surface and its relationship with the severity of burns and mortality.

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Human cytomegalovirus (HCMV) is increasingly suggested to be involved in human carcinogenesis and onco-modulation due to its ability to contribute to all hallmarks of cancer. Growing evidence demonstrates a link between HCMV infection and various malignancies, including breast cancer, which incidence and mortality are still on the rise. The etiology of breast cancer remains mostly unclear, leaving 80% of breast cancer cases considered to be sporadic.

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Background: Chronic exposure to silica is related with the provocation of an inflammatory response and oxidative stress mechanism. Vitamin D has multiple benefits in biological activities particularly respiratory system disease.

Method: In this research, 20 male Wistar rats were randomly allocated into four groups (5 rats /group) as follow: Group1 received saline as (negative control) group.

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Continuing efforts aimed at performing the 1-decene polymerization to low viscosity polyalphaolefins (PAO)s using a less hazardous AlCl catalyst than boron-based analogs, the basic mechanisms of this system were revealed in this research. In this aspect, neat AlCl and AlCl /toluene were carried out to perform 1-decene polymerizations. Microstructure analyses of the as-synthesized oils revealed low molecular weight (708 vs.

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Pediatric burns have long-term physical, psychological, economic, and social consequences for the patient and family. This study was designed to investigate the epidemiology, causes, and mechanism of pediatric burns in Iran, considering the impact the cultural and environmental differences of countries have on burn incidence. This study is a survey study that was performed from 2016 to 2017 on patients referred to Shahid Motahari hospital.

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Background: Burns are one of the most important health problems in communities. Traumatic injuries, especially Traumatic Brain Injury (TBI) associated with burns, may increase disability and mortality. In addition to preventing burns, any action for a better treatment approach and early detection of concomitant traumatic injuries can reduce complications, disability, and treatment costs.

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Air pollution is considered the most prominent public health. Economically, air pollution imposes additional costs on governments. This study aimed to quantify health effects and associated economic values of reducing PM air pollution using BenMAP-CE in Qom in 2019.

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Background: Acute mesenteric ischemia is known as a life threatening condition. Re-establishment of blood flow in this condition can lead to mesenteric ischemia reperfusion (MIR) injury which is accompanied by inflammatory response. Still, clear blueprint of inflammatory mechanism underlying MIR injury has not been provided.

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Glioblastoma invariably recurs despite aggressive and multimodal first-line treatment and no standardized second-line therapy exists. We previously reported that treatment with the antiviral drug valganciclovir as an add-on to standard therapy significantly prolonged overall survival in 102 patients with newly diagnosed glioblastoma compared to contemporary controls. Here we present the results of retrospective survival analyses including patients with glioblastoma that initiated valganciclovir therapy after recurrence.

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To evaluate the prevalence of cytomegalovirus (CMV) infection in preterm infants with cholestasis. Preterm infants (<37 weeks gestational age) with cholestasis were tested for CMV DNA using Taqman PCR in blood cells from sedimented whole blood, plasma, and urine. Infants were regarded as positive for CMV if any sample was tested positive.

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