831 results match your criteria: "Digestive Diseases Research Center[Affiliation]"

Article Synopsis
  • Obesity is a significant public health issue, prompting a study in southern Iran to examine the prevalence of metabolically healthy obesity (MHO) and healthy overweight (MHOW), alongside their associated factors.
  • * The study analyzed data to find that the standardized prevalence rates for MHOW and MHO were 6.3% and 2.3%, respectively, with younger age, female gender, higher socioeconomic status, and lower physical activity being linked to these conditions.
  • * The findings suggest that promoting physical activity could help prevent unhealthy obesity, signaling the need for public health initiatives focused on modifiable lifestyle factors.
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Article Synopsis
  • - The study explored the use of a deep learning model to predict COVID-19 patient outcomes based on chest CT images, aiming to improve its clinical application through deep privacy-preserving federated learning (DPFL).
  • - A total of 3,055 patients from 19 medical centers were analyzed, with the data being divided for training, validation, and testing to evaluate model performance using metrics like accuracy and sensitivity.
  • - The results showed that the centralized model achieved an accuracy of 76% and the DPFL model had an accuracy of 75%, with both models demonstrating similar specificity and comparable area under the curve (AUC) values, suggesting no significant statistical differences between the two approaches.
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Clin Gastroenterol Hepatol

November 2024

Digestive Diseases Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran.

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Article Synopsis
  • A retrospective study compared the clinical features and treatment of early-onset (children/adolescents) and elderly-onset inflammatory bowel disease (IBD) patients to understand differences in disease manifestation and progression.
  • The study found that early-onset IBD patients commonly had a more aggressive disease phenotype and used more intensive treatments like prednisolone and anti-TNF medications compared to elderly patients.
  • Notably, elderly-onset ulcerative colitis patients exhibited less aggressive disease and were less likely to require the same level of medication as their early-onset counterparts.
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Background: Several studies investigated the risks of neurological conditions in patients with inflammatory bowel disease (IBD), with some variability in findings. We aimed to perform a systematic review and meta-analysis of available evidence to elucidate the association between IBD and the risks of common neurological disorders.

Methods: We conducted a literature search through Embase, PubMed, Scopus, and ProQuest databases from inception to June 30, 2023, to identify cohort studies assessing the risk of developing stroke, all-cause dementia, Parkinson's disease (PD), multiple sclerosis (MS), seizure/epilepsy, and peripheral neuropathy in adult IBD patients compared with non-IBD population.

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Background: Helicobacter pylori (H. pylori) colonizes human gastric mucosa and is classified as class one carcinogenic bacteria. In this regard, this study aimed to detect major virulence factors in H.

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Context: Growing needs mandates economic growth. Entrepreneurship policies play a significant role in achieving productive employment and sustainable development for the health and wealth of society.

Aims: This study is conducted to find the accordance of this document with the basic theory of the global alphabet model of entrepreneurship on the one hand and a comparison to the real entrepreneurial and economic achievements as social determinants of health (SDOH) on the other hand.

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Emerging evidence supports the gut microbiota and the brain communication in general health. This axis may affect behavior through modulating neurotransmission, and thereby involve in the pathogenesis and/or progression of different neuropsychiatric disorders such as depression. Brain-derived neurotrophic factor and cAMP response element-binding protein known as CREB/BDNF pathway plays have critical functions in the pathogenesis of depression as the same of mechanisms related to antidepressants.

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Oral regimen for high dose methotrexate urine alkalinization: a systematic review and meta-analysis.

Daru

June 2024

Hematology, Oncology, and Stem Cell Transplantation Research Center, Research Institute for Oncology, Hematology, and Cell Therapy, Tehran University of Medical Sciences, Tehran, Iran.

Objective: Urine alkalinization prevents nephrotoxicity in patients receiving high-dose methotrexate (HDMTX). While the standard approach involves IV sodium bicarbonate, alternative oral bicarbonate regimens are crucial in drug shortages and outpatient settings. This study aims to review the efficacy and safety of such regimens.

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Background: Although younger adults with inflammatory bowel disease (IBD) are known to have an increased risk of developing colorectal cancer (CRC), the impact of IBD on CRC risk in elderly patients is not yet fully understood. Therefore, we conducted this systematic review and meta-analysis to address this knowledge gap.

Methods: We thoroughly searched Embase, PubMed, and Scopus, covering the literature from inception to 31 August 2023, in any language.

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Background: Osteonecrosis is a major cause of morbidity for patients with systemic lupus erythematosus (SLE). Although core decompression is an approved and trusted technique to prevent further joint deterioration, this surgical method seems to be less beneficial for SLE patients. We aimed to evaluate the outcomes of core decompression in SLE patients with primary stages of femoral head osteonecrosis.

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Background & Aims: Non-selective β-blockers (NSBBs) and endoscopic variceal-ligation (EVL) have similar efficacy preventing first variceal bleeding. Compensated and decompensated cirrhosis are markedly different stages, which may impact treatment outcomes. We aimed to assess the efficacy of NSBBs vs EVL on survival in patients with high-risk varices without previous bleeding, stratifying risk according to compensated/decompensated stage of cirrhosis.

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HDAC5-mediated exosomal Maspin and miR-151a-3p as biomarkers for enhancing radiation treatment sensitivity in hepatocellular carcinoma.

Biomater Res

December 2023

Department of Biochemistry and Molecular Biology and Asan Institute for Life Sciences, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-Ro 43-Gil, Songpa-Gu, Seoul, 05505, Republic of Korea.

Background: Tumor-derived exosomes are critical elements of the cell-cell communication response to various stimuli. This study aims to reveal that the histone deacetylase 5 (HDAC5) and p53 interaction upon radiation in hepatocellular carcinoma intricately regulates the secretion and composition of exosomes.

Methods: We observed that HDAC5 and p53 expression were significantly increased by 2 Gy and 4 Gy radiation exposure in HCC.

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Background: Gastroesophageal Reflux Disease (GERD) is a common chronic condition. Its chronic nature may affect the pattern of medication use. This study aimed to investigate the prevalence, associated factors, and patterns of polypharmacy and medication use among GERD patients in southwestern Iran.

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Aims: Despite the promise of immunotherapy for gastric adenocarcinoma, resistance is common, necessitating the validation of new targets. Based on our previous bioinformatics analysis, the MUC3A antigen emerged as a promising candidate for immunotherapy against gastric adenocarcinoma. However, a comprehensive understanding of its expression at protein level remains elusive, despite its crucial role in determining clinical response.

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The HAND2-AS1 (HAND2 Antisense RNA 1) Long noncoding RNA (lncRNA) has emerged as a participant in the initiation of various cancer types, underscoring its pivotal involvement in both oncological processes and immune responses. To gain deeper insights into the functional nuances of HAND2-AS1 and identify novel avenues for cancer immunotherapy, a comprehensive evaluation of this gene was undertaken. Here, based on the co-expression network analysis and construction of interacting lncRNA-mRNA genes, we introduce the HAND2-AS1 lncRNA, emphasizing its key roles in tumorigenesis and immune regulation.

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Background/aim: Currently, olaparib, a poly(ADP-ribose) polymerase (PARP) inhibitor, has been approved as maintenance therapy for patients with germline BRCA mutations and metastatic pancreatic cancer. However, platinum-based chemotherapy, which induces synthetic lethality with PARP inhibitor treatment, is still controversial. Hence, we aimed to examine a platinum-based drug in combination with a PARP inhibitor and generate data regarding the use of a PARP inhibitor in the overall treatment of pancreatic cancer.

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Efficacy and safety of immune checkpoint inhibitors for patients with prostate cancer: a systematic review and meta-analysis.

Front Immunol

December 2023

Hematology, Oncology and Stem Cell Transplantation Research Center, Research Institute for Oncology, Hematology and Cell Therapy, Tehran University of Medical Sciences, Tehran, Iran.

Immunotherapy has revolutionized the treatment paradigm of many cancers, however, its effectiveness in prostate cancer patients is still under question. In the present systematic review and meta-analysis, we sought for assessing the efficacy and safety of Immune checkpoint inhibitors (ICIs) in patients with prostate cancer. PubMed, Scopus, Web of Science, and EMBASE databases were searched on Aguste 19, 2022.

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Background: The modulation of immune responses by probiotics is crucial for local and systemic immunity. Recent studies have suggested a correlation between gut microbiota and lung immunity, known as the gut-lung axis. However, the evidence and mechanisms underlying this axis remain elusive.

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Article Synopsis
  • Adenoma detection rate (ADR) is a key measure in assessing the quality of colorectal cancer screening, with a study analyzing polyp detection rates (PDR) and ADR among various age groups over a seven-year period in Iran.
  • Out of 1,676 participants, it was found that older age groups (51-59 and ≥60) and high-risk patients had significantly higher PDR and ADR compared to average-risk patients, and men showed higher detection rates than women in certain age groups.
  • The overall trend indicated an increase in ADR during the study period, highlighting the importance of tailored screening approaches based on individual risk levels, age, and sex.
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T cells recognize several types of antigens in tumors, including aberrantly expressed, nonmutated proteins, which are therefore shared with normal tissue and referred to as self/shared-antigens (SSA), and mutated proteins or oncogenic viral proteins, which are referred to as tumor-specific antigens (TSA). Immunotherapies such as immune checkpoint blockade (ICB) can activate T-cell responses against TSA, leading to tumor control, and also against SSA, causing immune-related adverse events (irAE). To improve anti-TSA immunity while limiting anti-SSA autoreactivity, we need to understand how tumor-specific CD8+ T cells (TST) and SSA-specific CD8+ T (SST) cells differentiate in response to cognate antigens during tumorigenesis.

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Background And Aims: Recent studies raise concern for increased risk of major adverse cardiovascular events (MACE) with Janus kinase (JAK) inhibitors used to treat immune-mediated inflammatory disorders (IMIDs). We aimed to examine MACE risk with licensed biologics and small molecules used commonly between IMIDs: inflammatory bowel disease, rheumatoid arthritis, psoriasis/psoriatic arthritis, and ankylosing spondylitis.

Methods: Data were obtained from systematic searches (from inception to May 31, 2022) in PubMed, Embase, Ovid Medline, Scopus, Cochrane Central, and ClinicalTrials.

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Incident cancers attributable to using opium and smoking cigarettes in the Golestan cohort study.

EClinicalMedicine

October 2023

Genomic Epidemiology Branch, International Agency for Research on Cancer (IARC - WHO), Lyon, France.

Background: Opium consumption has recently been identified as a carcinogen, but the impact of opium use on cancer burden is unknown. We aimed to evaluate the fraction of cancers that could be attributed to opium use alone and in combination with cigarette smoking in a region where opium is widely used.

Methods: 50,045 Iranian adults were recruited to this prospective cohort study between 2004 and 2008 and were followed through January 2022.

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Background: Non-alcoholic fatty liver disease (NAFLD) is the world's most common etiology of chronic liver disease. In this systematic review and meta-analysis, we estimated the prevalence of NAFLD in the Iranian children and adult population.

Methods: A comprehensive search of five international databases, including PubMed, ISI/WOS, ProQuest, Scopus, and Google Scholar, was done from inception to Nov 2022.

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