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Many mammals rely on volatile organic chemical compounds (VOCs) produced by bacteria for their communication and behavior, though little is known about the exact molecular mechanisms or bacterial species that are responsible. We used metagenomic sequencing, mass-spectrometry based metabolomics, and culturing to profile the microbial and volatile chemical constituents of anal gland secretions in twenty-three domestic cats (Felis catus), in attempts to identify organisms potentially involved in host odor production. We found that the anal gland microbiome was dominated by bacteria in the genera Corynebacterium, Bacteroides, Proteus, Lactobacillus, and Streptococcus, and showed striking variation among individual cats. Microbiome profiles also varied with host age and obesity. Metabolites such as fatty-acids, ketones, aldehydes and alcohols were detected in glandular secretions. Overall, microbiome and metabolome profiles were modestly correlated (r = 0.17), indicating that a relationship exists between the bacteria in the gland and the metabolites produced in the gland. Functional analyses revealed the presence of genes predicted to code for enzymes involved in VOC metabolism such as dehydrogenases, reductases, and decarboxylases. From metagenomic data, we generated 85 high-quality metagenome assembled genomes (MAGs). Of importance were four MAGs classified as Corynebacterium frankenforstense, Proteus mirabilis, Lactobacillus johnsonii, and Bacteroides fragilis. They represent strong candidates for further investigation of the mechanisms of volatile synthesis and scent production in the mammalian anal gland.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10632438 | PMC |
http://dx.doi.org/10.1038/s41598-023-45997-1 | DOI Listing |
J Minim Access Surg
December 2024
Department of Surgery, Division of Colorectal Surgery, China Medical University Hsinchu Hospital, Zhubei City, Taiwan.
Introduction: Transvaginal natural orifice specimen extraction surgery (NOSES) is an innovative and feasible approach for left-sided colorectal resections in females. This study aimed to report our experience with transvaginal NOSES for left-sided laparoscopic colorectal resections.
Patients And Methods: We analysed data for all patients with transvaginal extraction performed for left-sided laparoscopic colorectal resections between 2011 and 2021 at a tertiary teaching hospital in Taiwan.
Cureus
November 2024
General Surgery, Lady Reading Hospital Medical Teaching Institution (MTI), Peshawar, PAK.
Introduction An anal fissure is marked by a longitudinal tear in the mucosal lining of the lower anal canal, causing painful defecation and mild anal bleeding. The classical triad includes an anal ulcer, a sentinel tag, and a hypertrophic papilla. This study investigates the frequency of fecal incontinence in patients with anal fissure undergoing closed internal sphincterotomy, offering recent insights for treatment recommendations.
View Article and Find Full Text PDFZhonghua Wei Chang Wai Ke Za Zhi
December 2024
Department of Colorectal Surgery, the Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing210029, China.
Horseshoe anal fistula is one of the most challenging subtypes of complex anal fistulas, closely related to the failure of anal fistula surgery and postoperative recurrence. Accurate preoperative assessment, correct classification, and appropriate surgical plans are crucial for improving treatment efficacy. This article primarily explores the clinical classification of horseshoe anal fistulas and the applicability of mainstream surgical techniques in different types of horseshoe anal fistulas, focusing on their cure rates, recurrence rates, and fecal continence, to assist surgeons to make reasonable surgical plans when treating horseshoe anal fistulas.
View Article and Find Full Text PDFZhonghua Wei Chang Wai Ke Za Zhi
December 2024
the 989th Hospital of the Joint Service Support Force of the Chinese People's Liberation Army / Research Institute of Anorectal Surgery of the Chinese People's Liberation Army, Luoyang471000, China.
Hemorrhoids, anal fissure, anal fistula and perianal abscess are the most common benign diseases around the anus, which obviously affect people's life and work, and need to be well diagnosed and treated. Based on damage control, the treatment principle is to eliminate relevant disease symptoms and protect the anal function at the same time. Perianal benign diseases are common and frequently occurring, which can be diagnosed and treated in many non-specialist hospitals.
View Article and Find Full Text PDFPediatr Surg Int
December 2024
Department of Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, 201102, China.
Purpose: The aim of this study was to evaluate the efficacy of seton placement for anal fistula in children.
Methods: The clinical data of children with anal fistula treated by seton placement admitted from January 2017 to September 2022 were retrospectively analyzed. Our primary treatments for perianal abscess (PA) are conservative treatment and drainage.
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