Adrenomedullin (ADM) is found in male accessory sex glands and is part of the seminal secretion. It plays an important role in protecting the sperm in the female reproductive tract. In this study, we investigated the roles of ADM in inflammation and oxidative stress in the endometrium and in leukocyte and macrophage infiltration in the endometrial stroma. The expression of the ADM gene in the ventral prostate, coagulating gland, and seminal vesicle was determined by real time PCR. The peptide levels in the tissue and secretion were measured using an EIA Kit. The highest ADM mRNA and peptide levels were found in the ventral prostate. Most of the ADM in the seminal vesicle was stored in the tissue while little was secreted. The expression of the IL-1β gene and the secretion of TNFα and IL-6 in uterine tissue decreased significantly after treatment with ADM for 4 hours. Using an immunostaining method, the levels of leukocyte and macrophage infiltration were found to be lower at 24 hours post coitus than 1.5 hours post coitus. The infusion of ADM receptor antagonist reduced the infiltration of leukocyte and macrophages in the endometrial stroma at 24 hours post coitus. As to the anti-oxidative effect of ADM in the female tract, the reactive oxygen species (ROS) level in isolated endometrial epithelial cells was significantly decreased after treatment with ADM or seminal fluid. Our findings demonstrated that ADM in the seminal secretion may modify the inflammatory responses, play an anti-oxidative role, and increase leukocyte and macrophage infiltration in the uterus.
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http://dx.doi.org/10.3109/19396368.2012.695855 | DOI Listing |
Mol Med Rep
March 2025
Key Laboratory for Experimental Teratology of Ministry of Education, Department of Histology and Embryology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong 250012, P.R. China.
Endometriosis (EM) is a chronic inflammatory disease that is one of the most common causes of gynecological systemic lesions in women before menopause. The most representative histological feature of EM is that the endometrium appears outside of the uterine cavity, often in the ovary. Although it is generally accepted that the epithelial and stromal cells of the ectopic endometrium are not malignant, they still have numerous similarities to malignant tumors, including considerable changes to the immune microenvironment (immune monitoring disorder), the creation of a specific hormone environment, high levels of oxidative stress, chronic inflammation and abnormal immune cell regulation.
View Article and Find Full Text PDFJ Inflamm Res
December 2024
Department of Cardiothoracic Surgery, Changzheng Hospital, Naval Medical University, Shanghai, People's Republic of China.
Background: Cardiac macrophages are a heterogeneous population with high plasticity and adaptability, and their mechanisms in heart failure (HF) remain poorly elucidated.
Methods: We used single-cell and bulk RNA sequencing data to reveal the heterogeneity of non-cardiomyocytes and assess the immunoreactivity of each subpopulation. Additionally, we employed four integrated machine learning algorithms to identify macrophage-related genes with diagnostic value, and in vivo validation was performed.
Mol Med
December 2024
Key Laboratory of Viral Pathogenesis and Infection Prevention and Control (Jinan University), Ministry of Education, School of Medicine, Jinan University, Guangzhou, 510632, China.
Rheumatoid arthritis (RA) and cardiovascular disease (CVD) are both the chronic inflammatory disease. To investigate the influence of secondary atherosclerosis on arthritis mice, we treated the ApoE mice with K/BxN serum and high fat diet (HFD), and subsequently assessed the phenotypes as well as immune profiles of K/BxN serum and HFD induced ApoE mice. We found that HFD treatment aggravated the hyperlipidemia, atherosclerotic lesions, ankle swelling and arthropathy of mice.
View Article and Find Full Text PDFJ Vis Exp
December 2024
Department of Medical Materials Science & Technology, Institute for Biomedical Engineering, University Hospital Tübingen;
Foreign body reaction (FBR), an immune-mediated complex healing process, plays a crucial role in integrating implants into the body. Macrophages, as the first line of immune system interaction with implant surfaces, play a bidirectional role in modulating the inflammation-regeneration balance. For a deep understanding and the evaluation of the reactions between implant materials and immune responses, reliable in vitro methods and protocols are pivotal.
View Article and Find Full Text PDFLeukocytes detect distant wounds within seconds to minutes, which is essential for effective pathogen defense, tissue healing, and regeneration. Blood vessels must detect distant wounds just as rapidly to initiate local leukocyte extravasation, but the mechanism behind this immediate vascular response remains unclear. Using high-speed imaging of live zebrafish larvae, we investigated how blood vessels achieve rapid wound detection.
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