Publications by authors named "Amirmohammad Khalaji"

Vasovagal syncope (VVS), characterized by transient loss of consciousness, is among the most prevalent reasons for emergency visits worldwide. Although benign in nature, VVS can be accompanied by traumatic injury, leading to morbidity and decreased quality of life, especially in those with VVS recurrence. The management includes non-pharmacologic and pharmacologic therapies (if resistant), patient education and reassurance, salt and fluid intake increase, and physical counter-pressure maneuvers.

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  • Heart failure (HF) is a significant health issue globally, prompting research into simple prognostic factors like anion gap (AG) to better understand patient outcomes.
  • Nine studies were analyzed in this review, revealing that non-survivors of HF had higher AG levels compared to survivors, suggesting a strong correlation between AG and mortality risk.
  • The findings indicate that higher AG is linked to increased mortality in HF patients, which could facilitate risk assessment and management in clinical practice due to its straightforward measurement.
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Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by synovial tissue transformation and fibroblast-like synoviocyte (FLS) proliferation. Galectin-3 is gaining attention as a diagnostic and prognostic biomarker for RA diagnosis. Elevated levels of Galectin-3 cause RA-FLSs to stimulate and generate proinflammatory agents, contributing to cartilage degradation and osteoclast formation.

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Objectives: Atrial fibrillation (AF) and stroke are two highly related conditions, with periodontitis and periodontal pathogens, such as Porphyromonas gingivalis (Pg), appearing to be the most prominent common risk factors. In this study, we evaluated studies assessing Pg infection via serum/plasma anti-Pg antibodies in patients with AF and/or stroke.

Material And Methods: Online databases (PubMed, Scopus, Embase, and the Web of Science) were screened for studies showing the association between anti-Pg antibodies with stroke and/or AF.

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Background: Cognitive decline and dementia are debilitating conditions that compromise the quality of life and charge the healthcare system with a substantial socioeconomic burden. In this context, emerging evidence supports an association between the triglyceride-glucose index (TyG), a surrogate insulin resistance marker, and cognitive decline and dementia. Hence, we systematically reviewed the studies assessing the TyG index in patients with cognitive decline and their controls.

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Background: Peripheral artery disease (PAD) is a common disease associated with atherosclerosis, leading to significant mortality and morbidity worldwide. Our study focuses on the association between insulin resistance (IR) and PAD, specifically investigating the triglyceride-glucose index (TyG) as a potential surrogate marker of IR in the context of PAD by pooling the existing studies on this topic.

Methods: Online databases, including PubMed, Embase, Scopus, and the Web of Science, were searched to find the studies comparing the TyG index in PAD vs.

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  • The Triglyceride-glucose index (TyG) serves as a marker for insulin resistance and may predict the risk of major adverse cardiac and cerebrovascular events (MACCE) in patients with acute coronary syndromes (ACS) undergoing percutaneous coronary intervention (PCI).
  • A study involving 13,542 patients showed that higher TyG levels, particularly in the fourth quartile, significantly correlated with an increased risk of MACCE, such as heart attacks and strokes.
  • In contrast, no significant association was found between TyG levels and MACCE in a subgroup of patients who were euglycemic, suggesting the need for further studies to confirm these findings for better clinical risk assessment.
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Background And Aims: Endocan is a marker of endothelial damage. Data regarding the association of this proteoglycan and acute respiratory distress syndrome (ARDS) is discrepant. Hence, this study sought to investigate the possible correlation between serum/plasma endocan concentration and ARDS.

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Background: The arterial stiffness measured by pulsed wave velocity (PWV) is associated with heart failure (HF). However, the effectiveness of arterial stiffness and PWV as prognostic indicators in patients with HFpEF and HFrEF is still unclear. In this systematic review and meta-analysis, we synthesized the prognostic value of PWV and arterial stiffness in HF patients.

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Background: The control of blood pressure (BP) is a challenge in diabetic patients and is associated with adverse outcomes of diabetes. In this systematic review and metaanalysis, we investigated the BP control rate among hypertensive diabetic patients in the Eastern Mediterranean Region (EMR) countries.

Methods: We systematically searched PubMed, Scopus, Embase, Cochrane, and Web of Science databases up to January 2023 for observational studies on BP control among hypertensive diabetic patients in all EMR countries.

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  • Tobacco use, especially cigarettes and e-cigarettes, is linked to increased risks for individuals with weakened immune systems (WIS) in the US.
  • Data analyzed from a large health survey revealed that a significant percentage of adults had WIS due to health conditions or prescriptions, with higher rates of current and former smokers among these individuals.
  • The findings highlight the need for targeted interventions to reduce tobacco use in people with WIS, as they are particularly vulnerable to the adverse effects of smoking.
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Background: Calprotectin, also known as MRP8/14, is generated by immune cells and is altered in several inflammatory diseases. Studies have assessed their levels in patients with coronary artery disease (CAD) and its subtypes (stable CAD and acute coronary syndrome [ACS]). Herein, we aimed to systematically investigate these associations through a systematic review and meta-analysis.

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Aims: Biomarkers are paramount for managing heart failure (HF) patients as prognostic and therapeutic efficacy index tools. Systemic levels of brain-derived neurotrophic factor (BDNF) can add to the HF biomarker scenario, allowing for potentiated efficacy in diagnosis, prognostic stratification, and prediction of patient response to a given therapeutic intervention because BDNF is one of the primary rulers of myocardial function. Yet, whether BDNF is a reliable clinical biomarker awaits clinical validation.

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Oxidative stress and inflammation are the key features of metabolic diseases, including type 2 diabetes mellitus (T2D). However, studies that explored redox homeostasis parameters in relation to T2D show discrepant results. Accordingly, we aimed to examine the potential reliability of oxidative stress biomarkers [ determined by malondialdehyde (MDA), advanced oxidation protein products (AOPP) and catalase (CAT)] in addition to traditional cardiometabolic parameters in relation to T2D in female cohort.

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  • * Data was collected from 13,682 patients, and four different ML models were tested: Logistic Regression, Random Forest, Extreme Gradient Boosting, and Ada Boost, with Random Forest showing the best performance in predictions.
  • * The findings revealed that age and comorbidities were significant predictors of mortality, and all models performed well, but Logistic Regression still offered similar predictive capabilities to the more complex ML methods.
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  • The study examines blood levels of brain-derived neurotrophic factor (BDNF) in patients with coronary heart disease (CHD) compared to healthy controls, revealing lower BDNF levels in the CHD group.
  • The analysis included data from 12 studies involving over 2,300 participants, using statistical methods to compare results and assess quality.
  • Findings suggest that BDNF could be a potential biomarker for CHD, indicating a need for more high-quality research on its role in disease severity and pathophysiology.
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The concentration of polycyclic aromatic hydrocarbons (PAHs) in the air inside residential houses in Iran along with measuring the amount of 1-OHpyrene metabolite in the urine of the participants in the study was investigated by gas chromatography-mass spectrometry (GC-MS). Demographic characteristics (including age, gender, and body composition), equipment affecting air quality, and wealth index were also investigated. The mean ± standard error (SE) concentration of particulate matter 10 (PM) and ∑PAHs in the indoor environment was 43.

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Objectives: Using the cardiac surgery database is of high importance in referral centers and can lead to a better quality of care for patients. Tehran Heart Center (THC) is a cardiovascular referral center that was inaugurated in 2001. In this report, we aimed to present the third report of trends in patients' cardiovascular risk factors and surgical procedures from 2002 to 2021 that have been gathered for all THC patients.

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Background: Unlike diabetes, the effect of prediabetes on outcomes in patients with acute coronary syndrome (ACS) who underwent percutaneous coronary intervention (PCI) is not much investigated. We investigated the association between fasting glycemic status and major adverse cardiovascular and cerebrovascular events (MACCE) in patients with ACS undergoing PCI and had mid to long-term follow-up after coronary stenting.

Methods: Registry-based retrospective cohort study included ACS patients who underwent PCI at the Tehran Heart Center from 2015 to 2021 with a median follow-up of 378 days.

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Background: Inflammatory bowel disease (IBD), including ulcerative colitis (UC) and Crohn's disease (CD), is a chronic relapsing-remitting systemic disease of the gastrointestinal tract with rising incidence. Studies have shown that adipocytes play a crucial role in patients with IBD by actively participating in systemic immune responses. The present study was designed to investigate the correlation between the circulatory levels of resistin, as an adipokine, and active and remission phases of IBD in comparison with healthy controls.

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Background: Although predictors and outcomes of postoperative atrial fibrillation (POAF) are well studied, evidence is lacking concerning postdischarge late/recurrent atrial fibrillation (AF). This study evaluated factors affecting late/recurrent AF and its association with coronary artery bypass grafting (CABG) outcomes in a real-world setting.

Methods: From 2012 through 2016, 5175 patients were included.

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Background: An essential relationship between insulin resistance (IR) and atrial fibrillation (AF) has been demonstrated. Among the methods used to assess IR, the triglyceride-glucose (TyG) index is the more straightforward, dimensionless, and low-cost tool. However, the possible usage of this index in clinical practice to predict and diagnose AF has yet to be determined and consolidated.

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Myocardial infarction (MI) is the leading cause of heart failure (HF), accounting for high mortality and morbidity worldwide. As a consequence of ischemia/reperfusion injury during MI, multiple cellular processes such as oxidative stress-induced damage, cardiomyocyte death, and inflammatory responses occur. In the next stage, the proliferation and activation of cardiac fibroblasts results in myocardial fibrosis and HF progression.

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  • The study assessed the health impact of kidney dysfunction as a metabolic risk factor in 21 countries of the North Africa and Middle East region between 1990 and 2019, utilizing data from the Global Burden of Disease 2019 study.
  • In 2019, kidney dysfunction led to approximately 296,632 deaths in the region, reflecting a significant increase since 1990, with countries like Afghanistan and Egypt showing the highest death rates associated with this condition.
  • The findings highlighted the role of kidney dysfunction in contributing to various cardiovascular diseases, urging policymakers to enhance prevention and management strategies to mitigate its broader health implications.
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