We report graft-vs-host disease-like histology in a small intestinal biopsy specimen that was obtained from a patient with common variable immunodeficiency and related T-cell defect. We include findings from immunohistochemical studies and follow-up information. Review of the literature yielded only a small number of histologically documented cases of this lesion without previous bone marrow transplantation. Awareness of this clinicopathologic entity is important in the interpretation of gastrointestinal biopsy specimens.
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Aging (Albany NY)
January 2025
Department of Pathology, Yale University School of Medicine, New Haven, CT 06519, USA.
Studies of the aging transcriptome focus on genes that change with age. But what can we learn from age-invariant genes-those that remain unchanged throughout the aging process? These genes also have a practical application: they can serve as reference genes in expression studies. Reference genes have mostly been identified and validated in young organisms, and no systematic investigation has been done across the lifespan.
View Article and Find Full Text PDFWorld J Gastrointest Surg
January 2025
Department of General Surgery, Tianjin Xiqing Hospital, Tianjin 300100, China.
Background: Petersen's hernia occurring through the epiploic foramen of the greater omentum, is an uncommon type of internal hernia. When it presents with complications such as chylous ascites, which is the lymphatic fluid accumulation in the abdominal cavity, it is particularly rare. Following laparoscopic total gastrectomy and Roux-en-Y anastomosis, the incidence of this condition is exceedingly low.
View Article and Find Full Text PDFDrug Des Devel Ther
January 2025
Department of Pediatric Surgery, Faculty of Medicine, Gazi University, Yenimahalle, Ankara, Turkey.
Background: Intestinal ischemia/reperfusion (I/R) injury can occur in a wide variety of diseases and surgeries. If necessary, the blood flow should be restored, including re-anastomosis by removing the intestines with impaired circulation. In this process, anastomotic strength is as important as inflammatory responses and oxidative stress.
View Article and Find Full Text PDFSmall Methods
January 2025
Department of Pathology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong, 510080, China.
Accurately defining cell boundaries for spatial transcriptomics is technically challenging. The current major approaches are nuclear staining or mathematical inference, which either exclude the cytoplasm or determine a hypothetical boundary. Here, a new method is introduced for defining cell boundaries: labeling cell membranes using genetically coded fluorescent proteins, which allows precise indexing of sequencing spots and transcripts within cells on sections.
View Article and Find Full Text PDFJ Transl Med
January 2025
Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, 210042, China.
Background: The small intestine harbors a rich array of intestinal intraepithelial lymphocytes (IELs) that interact with structural cells to collectively sustain gut immune homeostasis. Dysregulation of gut immune homeostasis was implicated in the pathogenesis of multiple autoimmune diseases, however, whether this homeostasis is disrupted in a lupus autoimmune background remains unclear.
Methods: We performed single-cell RNA sequencing (scRNA-seq) analyses to elucidate immune and structural milieu in the intestinal epithelium of MRL/Lpr lupus mice (Lpr mice) and MRL/Mpj control mice (Mpj mice).
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