PMID: 1189779Jan 1, 1975Paper

[Dependence of the contractility of the non-pregnant human uterus from the perfusion pressure of the vascular bed during the menstrual cycle].

Zentralblatt für Gynäkologie
R Czekanowski

Abstract

The relation between the contractile activity of the isolated non-pregnant human uterus and the perfusion pressure of its vascular bed has been investigated. Experiments have been carried out on 35 isolated human uteri obtained at operations from various phases of the cycle. It has been found that the contractile activity of the non-pregnant human uterus is characterised by the lack of contraction coordination in the course of the sexual cycle with particular attention to this property in the midcycle. Regularly coordinated contractions have been recorded in the period of menstrual bleeding only. Moreover, it has been demonstrated that there is a close relation between the quality of the contractile activity and perfusion pressure in the vascular bed of the isolated human uterus, i.e. contractions with a small amplitude (4 to 8 mmHg) have as a rule no influence on the perfusion pressure whereas contractions with a higher amplitude (over 15 mHg) influence very distinctly the perfusion pressure in the vascular bed of the isolated human uterus. Obtained results have been discussed with reference to the physiology of the contractile activity basic processes of the nonpregnant human uterus.

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.