Lymphedema is often complicated by chronic inflammation, leading to fibrosis, fat deposition, and inhibition of lymphangiogenesis. This study aimed to verify whether lymphedema itself or together with commensal bacterial flora infection contributes to the severity of local inflammation. Edema was induced by interruption of the lymph flow in the rat's hind limb.
View Article and Find Full Text PDFIn individuals with lymphedema, diabetic foot, or other diseases, infections with saprophytes are common. The response of major cell subpopulations in the draining lymph nodes to skin infection with was assessed using the rat model. After massive subepidermal infection, a cytometric evaluation showed an increase in cytotoxic and helper T lymphocytes and major subpopulations of the innate immune response.
View Article and Find Full Text PDFAging affects all tissues and organs. Aging of the immune system results in the severe disruption of its functions, leading to an increased susceptibility to infections, an increase in autoimmune disorders and cancer incidence, and a decreased response to vaccines. Lymph nodes are precisely organized structures of the peripheral lymphoid organs and are the key sites coordinating innate and long-term adaptive immune responses to external antigens and vaccines.
View Article and Find Full Text PDF5-Hydroxymethylcytosine (5hmC) is a functionally active epigenetic modification. We analyzed whether changes in DNA 5-hydroxymethylation are an element of age-related epigenetic drift. We tested primary fibroblast cultures originating from individuals aged 22-35 years and 74-94 years.
View Article and Find Full Text PDFIn the assessment of the health risk of an obese individual, both the amount of adipose tissue and its distribution and metabolic activity are essential. In adults, the distribution of adipose tissue differs in a gender-dependent manner and is regulated by sex steroids, especially estrogens. Estrogens affect adipocyte differentiation but are also involved in the regulation of the lipid metabolism, insulin resistance, and inflammatory activity of the adipose tissue.
View Article and Find Full Text PDFIntroduction: Polymorphism of the glucocorticoid receptor gene (NR3C1) may modify protein abundance or function and therefore disturb human homeostasis.
Methods: Variant frequencies of the three NR3C1 polymorphisms, rs2963154, rs10515522 and rs2918418, selected in silico as associated with longevity, was analyzed in 552 DNA samples from 95 to 106-year-old individuals and in 284 samples of cord blood DNA from newborns.
Results: Frequencies of the TT genotypes of rs2963154 and rs10515522, and of the rs291841 CC genotype, were higher in the long-lived study subjects (p = 0.