Objective: To determine the frequency of H. pylori infection in biopsy proven gastritis and its association with lymphoid follicle formation.
Methods: This was a cross sectional study conducted at the Department of Histopathology, Dow Diagnostic Reference and Research Laboratory between January 2008 and December 2009. Analysis of 185 gastric antral biopsy specimens was done. Tissue sections were stained with haematoxylin and eosin for histological examination for severity of gastritis and lymphoid follicle formation. Giemsa stain was used for H. pylori assessment.
Results: Out of 185 cases, H pylori was found in 114 (61.6%) patients. Frequency of H. pylori infection was seen in fourth and fifth decades as 17.8% and 15.1% respectively. A total of 51 (27.6%) cases in which lymphoid follicle formation was found, 44 (38.6%) were associated with H. pylori infection. This association was statistically significant (p value < 0.0005) by using Chi square test.
Conclusion: The frequency of H. pylori infection is common in our population, moreover, significant association is seen between lymphoid follicle formation and H. pylori infection.
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Curr Opin HIV AIDS
January 2025
Department of Pathology and Laboratory Medicine, Emory Vaccine Center, Emory National Primate Research Center (ENPRC).
Purpose Of Review: Natural killer (NK) cells are integral components of the innate immune system, serving a vital function in eliminating virally infected cells. This review highlights the significance of CXCR5+ NK cells in the context of chronic HIV/SIV infection and viral control.
Recent Findings: Controlled HIV/SHIV infection results in a substantial increase in the population of CXCR5+ NK cells within the B-cell follicles of secondary lymphoid organs (SLOs).
Int J Mol Sci
December 2024
National Medical Research Center of Cardiology Named after Academician E.I. Chazov, Moscow 121552, Russia.
Constructing artificial tertiary lymphoid structures (TLSs) opens new avenues for advancing cancer immunotherapy and personalized medicine by creating controllable immune niches. Mesenchymal stromal cells (MSCs) offer an ideal stromal source for such constructs, given their potent immunomodulatory abilities and accessibility. In this study, we explored the potential of adipose-derived MSCs to adopt TLS-supportive phenotypes and facilitate lymphocyte organization.
View Article and Find Full Text PDFBiomolecules
November 2024
Geisel School of Medicine at Dartmouth, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03756, USA.
CXCL13 is a chemokine which is upregulated within the CNS in multiple sclerosis, Lyme neuroborreliosis, and other inflammatory diseases and is increasingly clinically useful as a biomarker. This review provides background for understanding its function in the immune system and its relationship to ectopic lymphoid follicles. Also reviewed are its utility in multiple sclerosis and Lyme neuroborreliosis and potential problems in its measurement.
View Article and Find Full Text PDFCancers (Basel)
December 2024
Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates.
Background: Ulcerative colitis is a chronic inflammatory bowel disease of the colon mucosa associated with a higher risk of colorectal cancer.
Objective: This study classified hematoxylin and eosin (H&E) histological images of ulcerative colitis, normal colon, and colorectal cancer using artificial intelligence (deep learning).
Methods: A convolutional neural network (CNN) was designed and trained to classify the three types of diagnosis, including 35 cases of ulcerative colitis (n = 9281 patches), 21 colon control (n = 12,246), and 18 colorectal cancer (n = 63,725).
Animals (Basel)
December 2024
Department of Veterinary Pathology, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania.
Gastric lymphofollicular hyperplasia (GLFH) is characterized by large lymphoid nodules in the lamina propria. Its etiology and immunohistochemical characteristics are poorly understood. This study analyzed 41 canine GLFH cases, including clinical, endoscopic, histopathological, and immunohistochemical evaluations.
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