Publications by authors named "Hassan Taheri"

Despite considerable progress in gastric cancer screening, prevention, and treatment, it remains a major cause of morbidity and mortality worldwide. Due to late diagnosis of the disease, early potential diagnostic biomarkers are needed. Accumulating evidence indicates that non-coding RNAs have potential applications as diagnostic and prognostic biomarkers in gastric cancer.

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Article Synopsis
  • - This study addresses the challenge of early diagnosis in gastric cancer by using next-generation RNA sequencing to examine gene expression in tumor and non-tumor tissue samples from patients with early-stage gastric cancer.
  • - The results showed that 5 genes were upregulated while 234 were downregulated in cancerous tissues, revealing significant alterations in various biological pathways related to gastric health and disease.
  • - The findings suggest that the identified genes and pathways could lead to new diagnostic biomarkers for early detection of gastric cancer, highlighting the potential of RNA sequencing in cancer research.
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Gastric cancer is among the commonplace causes of cancer death worldwide. Sonic hedgehog (Shh) signaling is an important pathway which may be dysregulated in many cancers.CDX1/2, and KLF5are key transcription factors involved in Shh pathway and cancer stem cells.

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Article Synopsis
  • Gastric cancer is a leading cause of cancer death globally, linked to various genetic changes, including the CYLD tumor suppressor gene.
  • This study is the first to examine how the CYLD promoter's CpG island methylation affects its expression in gastric adenocarcinoma using tissue samples.
  • Results show that CYLD expression is significantly reduced in cancer tissues compared to normal ones, with further impacts from infections like H. pylori and EBV linked to changes in methylation levels and CYLD expression.
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Gastric cancer is a life-threatening disease; resulting from interaction among genetic, epigenetic, and environmental factors. Aberrant dysregulation and methylation changes in Wnt/β-catenin signaling downstream elements are a prevalent phenomenon encountered in gastric tumorigenesis. Also, viral infections play a role in gastric cancer development.

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Helicobacter pylori and Epstein-Barr virus are well established infections for gastric cancer development. However, the role of cytomegalovirus alone or in combination with other infections is unclear. In this case-control study, the prevalence of different infections was evaluated, and their frequency was compared with clinicopathologic features among gastric cancer patients and normal volunteers from 2012 to 2017.

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The relationship of minerals and trace elements with inflammatory bowel disease (IBD) is complex. Alterations in their metabolism can be induced by the diseases and their complications. To study the role of trace elements in IBD patients' serum zinc and copper and their related enzymes, including superoxide dismutase (SOD), activity were measured in patients with IBD patients as well as in healthy subjects.

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Introduction: Hemangioma is the most common benign tumor of the liver. Most cases are asymptomatic and do not require treatment. A hemangioma can rarely be pedunculated; as a result, it may undergo torsion and infarction, which can make it symptomatic.

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Gastric cancer is one of the major causes of death due to cancer in the world. It is a multi-factorial disease with epigenetic factors being also involved in its development. FAT4 is a tumor suppressor gene exerting an important role in cell adhesion.

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Background: Cholangiocarcinoma is an invasive biliary malignancy with poor prognosis. Diagnostic accuracy of conventional methods is low which is mainly due to the specific anatomy of the disease. The aim of this study was to evaluate the diagnostic value of biochemical profile and tumor marker of the bile in patients with malignant cholestasis compared to that of choledocholithiasis.

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Background: Inflammatory process has a substantial contribution in the development of anemia in chronic hemodialysis patients. Low serum albumin in hemodialysis patients is considered a marker of inflammation. The present longitudinal study aimed to determine the relationship between low baseline serum albumin and future development of anemia.

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Background: The appropriate colon cleansing is a major determinant of quality of colonoscopy. This prospective randomized study was designed to compare the efficacy and tolerability of the morning (AM) PEG (polyethylene glycol) solution to previous-evening (PM) PEG solution for the afternoon colonoscopy.

Methods: This comparative study compared the AM to PM prep for afternoon outpatient colonoscopy.

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Electronic equipment operating in harsh environments such as space is subjected to a range of threats. The most important of these is radiation that gives rise to permanent and transient errors on microelectronic components. The occurrence rate of transient errors is significantly more than permanent errors.

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Functional dyspepsia (FD) is a common cause of upper gastrointestinal symptoms and discomfort. The present study aimed to assess the effectiveness of brief core conflictual relationship theme (CCRT) psychoanalytic psychotherapy on changing gastrointestinal symptoms, alexithymia, and defense mechanisms in patients with FD. In a randomized controlled trial study, 49 patients with FD were randomly assigned to medical treatment with brief psychodynamic therapy (24 subjects) or medical treatment alone (25 subjects).

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The mechanism by which granulocyte colony-stimulating factor (G-CSF) could lead to the protection from liver injury is not well known. Therefore, the resolution of this role needs further basic and clinical experimental investigation. Acute liver injury was induced in rats by single intraperitoneal injection of a 0.

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Background: The level of HBsAg in some chronic hepatitis B virus (HBV)-infected individuals may decline over time so that it is not detectable in serum.

Objective: To assess the efficacy of HBV vaccine in those who lost their HBsAg without seroconverssion to anti-HBs antibody.

Patients And Methods: From April 1993 to December 2008, of 1603 chronic HBV-infected individuals, 34 (22 men and 12 women) became HBsAg-negative in follow-up visits, with no detectable anti-HBs antibody and HBV DNA in their sera.

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Unlabelled: Background : Basic fibroblast growth factor (bFGF) is a glycoprotein with stimulating ability of angiogenesis. In addition, bFGF plays an important role in wound healing process in some tissues for example gastrointestinal tract, but its ability for discrimination of various stages of wound severity in these diseases was not reported. Therefore, we aimed to determine the bFGF levels in gastric ulcer patients compared with healthy controls as a biomarker for staging the severity of wound.

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Background: Infants born to chronic hepatitis B virus (HBV) infected mothers may be infected in spite of receiving passive-active immunoprophylaxis.

Objectives: The purpose of this study was to assess the outcome of infants born to women actively infected by HBV.

Study Design: From April 2004 to September 2009, infants born to women actively infected by HBV received hepatitis B immune globulin (HBIG) and the first dose of hepatitis B vaccine at birth.

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To clarify host and environmental factors for gastric carcinogenesis, we obtained information about gastric cancer mortality in Babol, in the North of Iran, and recruited 130 participants aged 30-80 years from the general population of Babol in 2004. A urea breath test, assessment of IgG antibodies to Helicobacter pylori, a pepsinogen test, a marker of chronic atrophic gastritis, and determination of urinary excretions of sodium and potassium were performed. Diet and lifestyle information was also obtained using a questionnaire.

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