Wound healing in stage IV pressure injury with use of adjunct autologous activated platelet-rich plasma therapy: a case report.

Introduction: Pressure injuries remain a major burden worldwide with associated morbidity and financial implications. Patients in the ICU, such as those with severe COVID-19, are especially susceptible to PI as they remain immobile for extended durations while intubated.

Objective: This report examines a case of stage 4 PI in a senior COVID-19 survivor treated with adjunct intravenous and intralesional aaPRP therapy in addition to topical hyaluronic acid/silver sulfadiazine cream and framycetin sulphate dressing.

[Compensatory reaction during degeneration of arcuate nucleus dopaminergic neurons in rats].

The study has been carried out to verify the authors' hypothesis that degeneration of dopaminergic (DA-ergic) neurons of the hypothalamic tuberoinfundibular system and concomitant development of hyperprolactinemia are accompanied by involvement of compensatory synthesis of dopamine (DA) by non-dopaminergic neurons expressing single complementary enzymes of synthesis of this neurotransmitter. Degeneration of DA-ergic neurons was produced by a stereotaxic injection into the brain lateral ventricles of 6-hydroxydopamine (6-OHDA) - a specific neurotoxin of DA-ergic neurons. 14 and 45 days after the toxin administration there were determined concentration of prolactine in peripheral blood by methods of immunoenzyme and radioimmunological analyses as well as the DA amount in the arcuate nucleus by the method of highly efficient liquid chromatography with electrochemical detection.

Role of the IGF system in trophoblast invasion and pre-eclampsia.

Insulin-like growth factor-II (IGF-II) and IGF binding protein-1 (IGFBP-1) appear to play an important role in paracrine interactions at the maternal-fetal interface in human pregnancy. Patterns of expression of IGF-II and IGFBP-1 at the decidual-trophoblast interface suggest paracrine interactions occur between the IGF-II-expressing invading cytotrophoblast and maternal decidua-derived IGFBP-1. Autocrine/paracrine actions of trophoblast-derived IGF-II may be important in invasion, and for both trophoblast and decidual function.

Gestational age-dependent expression of insulin-like growth factor-binding protein-1 (IGFBP-1) phosphoisoforms in human extraembryonic cavities, maternal serum, and decidua suggests decidua as the primary source of IGFBP-1 in these fluids during early pregnancy.

The insulin-like growth factors (IGFs) and their binding proteins (IGFBPs) are important regulators of fetal and maternal tissue development during pregnancy. Posttranslational modification of IGFBP-1 yields up to six IGFBP-1 phosphovariants and a nonphosphorylated form, which in vitro, have some different properties. Nonphospho IGFBP-1 has less affinity for IGFs than the phospho isoforms and also may have IGF-independent actions.

Insulin-like growth factor binding protein-1 at the maternal-fetal interface and insulin-like growth factor-I, insulin-like growth factor-II, and insulin-like growth factor binding protein-1 in the circulation of women with severe preeclampsia.

Objectives: Preeclampsia is characterized by maternal hypertension, proteinuria, edema, and shallow placental invasion. Insulin-like growth factor binding protein-1, abundant in maternal decidua, is believed to play a role in limiting trophoblast invasiveness. In this study we addressed the hypothesis that this binding protein is aberrantly expressed in preeclampsia.