Biomaterial Database

Anomalous response of urinary kallikrein to deoxycorticosterone in Dahl salt-sensitive rats. 1982

J P Rapp, and R P McPartland, and D L Sustarsic

Previous evidence shows that salt-sensitive (S) rats have a net increase in plasma mineralocorticoid activity due to 18-hydroxy-11-deoxycorticosterone and decreased urinary kallikrein excretion compared to salt-resistant (R) rats. Since mineralocorticoids stimulate urinary kallikrein excretion, these results are inconsistent. This inconsistency was explained by the fact that, while R rats responded normally to treatment with deoxycorticosterone (DOC) by an increase in urinary kallikrein excretion, S rats showed no change in urinary kallikrein even when treated with 10 mg of DOC/day for 24 days. S and R rats responded identically to DOC with changes muscle electrolytes and relative hypertrophy of the renal distal tubule. Other measures of chronic mineralocorticoid response in S rats beside kallikrein were, therefore, intact. It was found that S rats were capable of responding to Na deficient diet with an increase in urinary kallikrein comparable to R rats. It was argued, therefore, that mineralocorticoid receptor mechanisms and distal-tubular cell responsiveness are intact in S rats. Mild glomerular and tubular scarring was found in S rats and the severity of renal lesions was increased by DOC treatment in S rats. These lesions correlated well with blood pressure and proteinuria. No such lesions were present in control or DOC treated R rats. It was suggested that failure of urinary kallikrein to respond to DOC in S rats may be a secondary phenomenon resulting from renal damage.

UI	MeSH Term	Description	Entries
D007610	Kallikreins	Proteolytic enzymes from the serine endopeptidase family found in normal blood and urine. Specifically, Kallikreins are potent vasodilators and hypotensives and increase vascular permeability and affect smooth muscle. They act as infertility agents in men. Three forms are recognized, PLASMA KALLIKREIN (EC 3.4.21.34), TISSUE KALLIKREIN (EC 3.4.21.35), and PROSTATE-SPECIFIC ANTIGEN (EC 3.4.21.77).	Kallikrein,Kininogenase,Callicrein,Dilminal,Kallidinogenase,Kalliginogenase,Kallikrein A,Kallikrein B',Kallikrein Light Chain,Kinin-Forming Enzyme,Padutin,alpha-Kallikrein,beta-Kallikrein,beta-Kallikrein B,Enzyme, Kinin-Forming,Kinin Forming Enzyme,Light Chain, Kallikrein,alpha Kallikrein,beta Kallikrein,beta Kallikrein B
D007678	Kidney Glomerulus	A cluster of convoluted capillaries beginning at each nephric tubule in the kidney and held together by connective tissue.	Glomerulus, Kidney
D007686	Kidney Tubules, Distal	The portion of renal tubule that begins from the enlarged segment of the ascending limb of the LOOP OF HENLE. It reenters the KIDNEY CORTEX and forms the convoluted segments of the distal tubule.	Distal Kidney Tubule,Distal Renal Tubule,Distal Kidney Tubules,Distal Renal Tubules,Kidney Tubule, Distal,Renal Tubule, Distal,Renal Tubules, Distal,Tubule, Distal Kidney,Tubule, Distal Renal,Tubules, Distal Kidney,Tubules, Distal Renal
D009132	Muscles	Contractile tissue that produces movement in animals.	Muscle Tissue,Muscle,Muscle Tissues,Tissue, Muscle,Tissues, Muscle
D011188	Potassium	An element in the alkali group of metals with an atomic symbol K, atomic number 19, and atomic weight 39.10. It is the chief cation in the intracellular fluid of muscle and other cells. Potassium ion is a strong electrolyte that plays a significant role in the regulation of fluid volume and maintenance of the WATER-ELECTROLYTE BALANCE.
D011919	Rats, Inbred Strains	Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding.	August Rats,Inbred Rat Strains,Inbred Strain of Rat,Inbred Strain of Rats,Inbred Strains of Rats,Rat, Inbred Strain,August Rat,Inbred Rat Strain,Inbred Strain Rat,Inbred Strain Rats,Inbred Strains Rat,Inbred Strains Rats,Rat Inbred Strain,Rat Inbred Strains,Rat Strain, Inbred,Rat Strains, Inbred,Rat, August,Rat, Inbred Strains,Rats Inbred Strain,Rats Inbred Strains,Rats, August,Rats, Inbred Strain,Strain Rat, Inbred,Strain Rats, Inbred,Strain, Inbred Rat,Strains, Inbred Rat
D001794	Blood Pressure	PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.	Systolic Pressure,Diastolic Pressure,Pulse Pressure,Pressure, Blood,Pressure, Diastolic,Pressure, Pulse,Pressure, Systolic,Pressures, Systolic
D003900	Desoxycorticosterone	A steroid metabolite that is the 11-deoxy derivative of CORTICOSTERONE and the 21-hydroxy derivative of PROGESTERONE	21-Hydroxyprogesterone,Cortexone,Deoxycorticosterone,Desoxycortone,11-Decorticosterone,21-Hydroxy-4-pregnene-3,20-dione,11 Decorticosterone,21 Hydroxy 4 pregnene 3,20 dione,21 Hydroxyprogesterone
D004039	Diet, Sodium-Restricted	A diet which contains very little sodium chloride. It is prescribed by some for hypertension and for edematous states. (Dorland, 27th ed)	Diet, Low-Salt,Diet, Low-Sodium,Diet, Salt-Free,Diet, Low Salt,Diet, Low Sodium,Diet, Salt Free,Diet, Sodium Restricted,Diets, Low-Salt,Diets, Low-Sodium,Diets, Salt-Free,Diets, Sodium-Restricted,Low-Salt Diet,Low-Salt Diets,Low-Sodium Diet,Low-Sodium Diets,Salt-Free Diet,Salt-Free Diets,Sodium-Restricted Diet,Sodium-Restricted Diets
D004305	Dose-Response Relationship, Drug	The relationship between the dose of an administered drug and the response of the organism to the drug.	Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response