Hormonal regulation Dotaz Zobrazit nápovědu
Developments in endocrinology ; 10
1st ed. xiv, 410 s.
- MeSH
- endokrinní systém MeSH
- sodík zásobování a distribuce MeSH
- Publikační typ
- monografie MeSH
- Konspekt
- Fyziologie člověka a srovnávací fyziologie
- NLK Obory
- endokrinologie
Endokrinní část pankreatu produkující inzulín, glukagon, somatostatin a pankreatický polypeptid podléhá mnoha typům regulací, z nichž regulační úloha enteropankreatické osy zaujímá přední místo. Inkretinový účinek glukózodependentního inzulínotropního peptidu (GIP) a glukagonu podobnému peptidu 1 (GLP-1) se významně účastní regulace sekrece inzulínu, která je pod modulačním vlivem mnoha dalších hormonů. Diabetes mellitus podobně jako poruchy jiných hormonů mohou být proto příčinou porušené regulace inzulínu i ostatních pankreatických hormonů.
Endocrine pancreas producing insulin, glucagon, somatostatin and pancreatic polypeptide is under the influence of different types of regulation; among them the regulatory role of enteropancreatic axis plays an important role. Incretin effect of glucose-dependent insulinotropic peptide (GIP) and glucagon-like peptide 1 (GLP-1) is significantly involved in the insulin secretion which is modulated by many other hormones. Diabetes mellitus, similarly to disturbances of other hormones, can cause impaired regulation of insulin and other pancreatic hormones.
Pflügers archiv European journal of physiology, ISSN 0031-6768 suppl. no. 2 to vol. 407, 1986
A6, R184 s. : tab., grafy ; 28 cm
- Konspekt
- Fyziologie člověka a srovnávací fyziologie
- NLK Obory
- fyziologie
- endokrinologie
Secondary cell walls (SCWs) have critical functional importance but also constitute a high proportion of the plant biomass and have high application potential. This is true mainly for the lignocellulosic constituents of the SCWs in xylem vessels and fibres, which form a structured layer between the plasma membrane and the primary cell wall (PCW). Specific patterning of the SCW thickenings contributes to the mechanical properties of the different xylem cell types, providing the plant with mechanical support and facilitating the transport of solutes via vessels. In the last decade, our knowledge of the basic molecular mechanisms controlling SCW formation has increased substantially. Several members of the multi-layered regulatory cascade participating in the initiation and transcriptional regulation of SCW formation have been described, and the first cellular components determining the pattern of SCW at the subcellular resolution are being uncovered. The essential regulatory role of phytohormones in xylem development is well known and the molecular mechanisms that link hormonal signals to SCW formation are emerging. Here, we review recent knowledge about the role of individual plant hormones and hormonal crosstalk in the control over the regulatory cascades guiding SCW formation and patterning. Based on the analogy between many of the mechanisms operating during PCW and SCW formation, recently identified mechanisms underlying the hormonal control of PCW remodelling are discussed as potentially novel mechanisms mediating hormonal regulatory inputs in SCW formation.
