Biomaterial Database

[The relationship of mesangial cells to the renal juxtaglomerular apparatus]. 1975

K A Zufarov, and V M Gontmakher

A comparison between the ultrastructural characteristics of mesangial cells and myoepithelioid ones of the juxtaglomerular apparatus (JGA) of the kidney was carried out under conditions of activation and reduction in the secretion of renin. Bilateral adrenalectomy and parenteral protein loading were used for intensifying the activity of JGA. The state of a decreased functional activity of the JGA was studied under conditions of 7-day starvation. It was established that both in the case of adrenalectomy and in protein loading mesangial and myoepitheloid cells showed a similar type of reaction, the essence of the latter being activation of the protein synthesis. Moreover, in mesangial cells there were observed secretory granules similar structurally to those of the myoepithelioid cells. A-Decrease in secretion in myoepithelioid cells of the JGA in starvation was accompanied at the same time by a reduction in the synthetic activity of mesangial cells. An analogous reaction of mesangial and myoepithelioid cells in activation and reduction of renin secretion justifies the suggestion about the functional unity of these cells in producing biologically active substances of the JGA of the kidney.

UI	MeSH Term	Description	Entries
D007606	Juxtaglomerular Apparatus	A complex of cells consisting of juxtaglomerular cells, extraglomerular mesangium lacis cells, the macula densa of the distal convoluted tubule, and granular epithelial peripolar cells. Juxtaglomerular cells are modified SMOOTH MUSCLE CELLS found in the walls of afferent glomerular arterioles and sometimes the efferent arterioles. Extraglomerular mesangium lacis cells are located in the angle between the afferent and efferent glomerular arterioles. Granular epithelial peripolar cells are located at the angle of reflection of the parietal to visceral angle of the renal corpuscle.	Apparatus, Juxtaglomerular
D012083	Renin	A highly specific (Leu-Leu) endopeptidase that generates ANGIOTENSIN I from its precursor ANGIOTENSINOGEN, leading to a cascade of reactions which elevate BLOOD PRESSURE and increase sodium retention by the kidney in the RENIN-ANGIOTENSIN SYSTEM. The enzyme was formerly listed as EC 3.4.99.19.	Angiotensin-Forming Enzyme,Angiotensinogenase,Big Renin,Cryorenin,Inactive Renin,Pre-Prorenin,Preprorenin,Prorenin,Angiotensin Forming Enzyme,Pre Prorenin,Renin, Big,Renin, Inactive
D004527	Egg Proteins	Proteins which are found in eggs (OVA) from any species.	Egg Protein,Egg Shell Protein,Egg Shell Proteins,Egg White Protein,Egg White Proteins,Egg Yolk Protein,Egg Yolk Proteins,Ovum Protein,Ovum Proteins,Yolk Protein,Yolk Proteins,Protein, Egg,Protein, Egg Shell,Protein, Egg White,Protein, Egg Yolk,Protein, Ovum,Protein, Yolk,Proteins, Egg,Proteins, Egg Shell,Proteins, Egg White,Proteins, Egg Yolk,Proteins, Ovum,Proteins, Yolk,Shell Protein, Egg,Shell Proteins, Egg,White Protein, Egg,White Proteins, Egg,Yolk Protein, Egg,Yolk Proteins, Egg
D006651	Histocytochemistry	Study of intracellular distribution of chemicals, reaction sites, enzymes, etc., by means of staining reactions, radioactive isotope uptake, selective metal distribution in electron microscopy, or other methods.	Cytochemistry
D000315	Adrenalectomy	Excision of one or both adrenal glands. (From Dorland, 28th ed)	Adrenalectomies
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D013217	Starvation	Lengthy and continuous deprivation of food. (Stedman, 25th ed)
D014176	Protein Biosynthesis	The biosynthesis of PEPTIDES and PROTEINS on RIBOSOMES, directed by MESSENGER RNA, via TRANSFER RNA that is charged with standard proteinogenic AMINO ACIDS.	Genetic Translation,Peptide Biosynthesis, Ribosomal,Protein Translation,Translation, Genetic,Protein Biosynthesis, Ribosomal,Protein Synthesis, Ribosomal,Ribosomal Peptide Biosynthesis,mRNA Translation,Biosynthesis, Protein,Biosynthesis, Ribosomal Peptide,Biosynthesis, Ribosomal Protein,Genetic Translations,Ribosomal Protein Biosynthesis,Ribosomal Protein Synthesis,Synthesis, Ribosomal Protein,Translation, Protein,Translation, mRNA,mRNA Translations
D051381	Rats	The common name for the genus Rattus.	Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

Related Publications

K A Zufarov, and V M Gontmakher

[Renal juxtaglomerular apparatus].

January 1969, Medicina,

K A Zufarov, and V M Gontmakher

Relationship of erythropoietin to renal juxtaglomerular cells.

January 1963, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine (New York, N.Y.),

K A Zufarov, and V M Gontmakher

[Renin-like activity of mesangial cells during extreme stress on the juxtaglomerular apparatus].

January 1978, Doklady Akademii nauk SSSR,

K A Zufarov, and V M Gontmakher

Renal juxtaglomerular apparatus hyperplasia.

October 2005, Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association,

K A Zufarov, and V M Gontmakher

[Morphology of the renal juxtaglomerular apparatus].

January 1972, Arkhiv patologii,

K A Zufarov, and V M Gontmakher

Relationship of juxtaglomerular apparatus to renin and angiotensin.

January 1962, Circulation,

K A Zufarov, and V M Gontmakher

OBSERVATIONS ON THE SIMILARITY OF MESANGIAL TO JUXTAGLOMERULAR CELLS.

December 1963, Laboratory investigation; a journal of technical methods and pathology,

K A Zufarov, and V M Gontmakher

[Renal hypertension and the juxtaglomerular apparatus].

June 1968, Kardiologiia,