Publications by authors named "Hashemian S"

Coagulation disorder is common among COVID-19 patients, particularly those afflicted with the severe form of the disease. Manifestations of thrombotic complications such as pulmonary embolism, deep vein thrombosis (DVT), ischemic stroke, cardiac infarction and arterial embolism is high in COVID-19 patients which have been assessed in various studies (5).It seems that COVID-19-related coagulopathy is a combination of low-grade DIC and pulmonary thrombotic microangiopathy which can have a significant effect on organ dysfunction in patients with severe COVID-19 (6).

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Background: Acute kidney injury (AKI) requires continuous renal replacement therapy (CRRT), which is one of the most important problems in medical and surgical patients. Therefore, it is very important to identify the influencing factors to reduce the dimensions of the problem. This study was conducted to investigate the mortality rate in medical and surgical patients with AKI requiring CRRT treatment.

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Viral infections in humans often cause excessive inflammation. In some viral infections, inflammation can be serious and even fatal, while in other infections it can promote viral clearance. Viruses can escape from the host immune system via regulating inflammatory pathways, thus worsening the illness.

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Norbelladine derivatives have garnered attention in recent years due to their diverse biological activities and pivotal role in the biosynthetic pathway of Amaryllidaceae alkaloids. This study reports the synthesis and biological evaluation of four O,-methylated derivatives of norbelladine. These derivatives were synthesized through a three-step process: forming imine intermediates from benzaldehydes with tyramine, hydrogenating them to secondary amines, and -methylating these amines.

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Article Synopsis
  • - The study aims to evaluate lung compliance and determine the best positive end-expiratory pressure (PEEP) levels in patients with TB-related Acute Respiratory Distress Syndrome (TB-ARDS) compared to those without TB-ARDS.
  • - Using electrical impedance tomography, researchers assessed 40 patients, finding that a PEEP level between 15-17 cm H2O showed promising outcomes in terms of limiting lung hyperdistention and collapse.
  • - Despite identifying optimal PEEP levels, the study highlights the importance of individualized approaches for respiratory support due to the variability in lung compliance among patients.
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The viral replication can impress through cellular miRNAs. Indeed, either the antiviral responses or the viral infection changes through cellular miRNAs resulting in affecting many regulatory signaling pathways. One of the microRNA families that is effective in human cancers, diseases, and viral infections is the miR-29 family.

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Purpose: To verify corneal biomechanical changes, poststromal augmentation using myopic small-incision lenticule extraction's (SMILEs) lenticules in advanced keratoconus (KCN) through Corvis ST (Oculus, Wetzlar, Germany).

Materials And Methods: A clinical trial enrolled 22 advanced KCN patients. We implanted lenticules exceeding 100 μ according to a nomogram and evaluated biomechanical factors through Corvis ST at 3-, 6-, and 24-month postimplantation.

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Article Synopsis
  • Highly pathogenic avian influenza viruses like H5N1 pose a potential pandemic threat, but their rapid mutation makes vaccine development difficult.
  • Researchers utilized an in silico method to design a multi-epitope vaccine targeting the H5N1 virus, incorporating various immune system components and adjuvants to enhance the immune response.
  • The study confirmed the vaccine's antigenicity, non-toxicity, and solubility, and showed promising results in molecular interactions with immune receptors TLR7 and TLR8, suggesting it could effectively stimulate T and B cell responses.
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In coronavirus disease 2019 (COVID-19), the formation of cytokine storm may have a role in worsening of the disease. By attaching the cytokines like interleukin-6 to the cytokine receptors on a cell surface, Janus kinase (JAK)-signal transducers and activators of transcription (STAT) pathway will be activated in the cytoplasm lead to hyperinflammatory conditions and acute respiratory distress syndrome. Inhibition of JAK/STAT pathway may be useful to prevent the formation of cytokine storm.

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Purpose: To investigate the outcomes of unilateral Supracor treatment to enhance near vision while maintaining good distance vision in hyperopic eyes.

Methods: This prospective interventional study includes consecutive hyperopic patients with presbyopia. All eyes underwent femtosecond laser-assisted keratomileusis treatment for hyperopia with an additional Supracor multifocal treatment algorithm in nondominant eyes.

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Bacteriophage (BP) cocktail was partially resistant to different temperatures and pH values.The BP cocktail showed lytic effects on different isolates.The BP cocktail reduced colonization in the internal organs of broilers.

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Article Synopsis
  • The study evaluated the change in adult critical care bed capacity in Asian countries, comparing data from 2017 to 2022, highlighting its importance during the COVID-19 pandemic.
  • Results showed a significant increase in the number of critical care beds per 100,000 population, rising from 3.0 in 2017 to 9.4 in 2022, with notable improvements in middle-income countries.
  • Despite the overall increase, only 3 countries did not enhance their capacity, and variability was observed, especially between middle and high-income economies regarding room specifications for critical care beds.
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Background: There is sufficient evidence that the index-finger-to-ring-finger-ratio (2D:4D-ratio) is associated with testosterone and estrogen exposure during the fetal stage. More specifically, a lower 2D:4D-ratio (that is; a shorter index finger, compared to a longer ring finger) was associated with a prenatally higher testosterone and lower estrogen exposure during the first trimester of the fetal stage. At a behavioral level, among adults, a lower 2D:4D-ratio was associated with a higher competitive performance among both female and male professional athletes, and with personality traits such as higher scores for mental toughness, dark triad traits, and aggressive behavior, and internet use disorder.

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Introduction: Trehalose is a naturally occurring disaccharide of 2 glucose molecules, which has been suggested as a potential therapeutic agent to reduce blood glucose and ameliorate diabetes-related complications in type 2 diabetes (T2D). This study aimed to determine the efficacy of medium-term trehalose treatment in patients with T2D.

Material And Methods: A double-blind, randomized, placebo-controlled trial in 40 patients with T2D was undertaken; 20 ingested trehalose 3.

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Introduction: We previously completed a trial of renal pelvic denervation for treating hypertension that reduced blood pressure by the 2-month primary endpoint. However, information on the durability of effectiveness is a critical requirement for device therapy and we now report data up to 12 months.

Methods: This was an open-label, single-arm feasibility study in patients with increased blood pressure despite taking an average of 2.

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Background: Chlamydiaceae are a group of gram-negative intracellular bacteria which can infect a wide variety of hosts. Some chlamydial agents are capable of crossing the host barrier and though they are potentially a risk to very different species. They also pose a zoonotic risk for human and different chlamydial agents are linked to several medical maladies.

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Since the outbreak of the COVID-19 pandemic in December 2019, scientists worldwide have been looking for a way to control this global threat. One of the most successful and practical solutions has been the development and worldwide distribution of the COVID-19 vaccines. However, in a small percentage of cases, vaccination can lead to de novo development or exacerbation of immune or inflammatory conditions such as psoriasis.

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Background And Aims: The main causes of death in patients with severe Coronavirus disease-2019 (COVID-19) are acute respiratory distress syndrome (ARDS) and multiorgan failure caused by a severe inflammatory cascade. Novel treatment strategies, such as stem-cell-based therapy and their derivatives can be used to relieve inflammation in these cases. In this study, we aimed to evaluate the safety and efficacy of therapy using mesenchymal stromal cells (MSCs) and their derived extracellular vesicles in COVID-19 patients.

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Currently, there are two vaccines based on killed and/or weakened Salmonella bacteria, but no recombinant vaccine is available for preventing or treating the disease. We used an in silico approach to design a multi-epitope vaccine against Salmonella using OmpA, OmpS, SopB, SseB, SthA and FilC antigens. We predicted helper T lymphocyte, cytotoxic T lymphocyte, and IFN-γ epitopes.

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Despite the need for novel, effective therapeutics for the COVID-19 pandemic, no curative regimen is yet available, therefore patients are forced to rely on supportive and nonspecific therapies. Some SARS-CoV-2 proteins, like the 3 C-like protease (3CLpro) or the major protease (Mpro), have been identified as promising targets for antiviral drugs. The Mpro has major a role in protein processing as well as pathogenesis of the virus, and could be a useful therapeutic target.

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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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Background: Reviewing the laboratory studies, we observe some drugs with other specified applications, which cause serious inhibitory immune responses in the body. Selective Serotonin Reuptake Inhibitors (SSRIs) are among these drugs. Therefore, the current research aimed to evaluate the effectiveness of one of the SSRI drugs called fluvoxamine on the cytokine levels in COVID-19 patients.

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