1
|
Ge WS, Geng W, Shen Y, Bao L, Li MP. [The screening of HPV-independent adenocarcinoma in situ of the uterine cervix by cell block: report of a case]. Zhonghua Bing Li Xue Za Zhi 2024; 53:98-100. [PMID: 38178759 DOI: 10.3760/cma.j.cn112151-20230823-00091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Affiliation(s)
- W S Ge
- Department of Pathology, Shaoxing Women and Children Health Hospital, Shaoxing 312000, China
| | - W Geng
- Department of Pathology, Shaoxing Women and Children Health Hospital, Shaoxing 312000, China
| | - Y Shen
- Department of Pathology, Shaoxing Women and Children Health Hospital, Shaoxing 312000, China
| | - L Bao
- Department of Pathology, Shaoxing Women and Children Health Hospital, Shaoxing 312000, China
| | - M P Li
- Department of Pathology, Shaoxing Women and Children Health Hospital, Shaoxing 312000, China
| |
Collapse
|
2
|
Ge WS, Li MP, Bao L. [Mixed carcinoma with apocrine differentiation and invasive micropapillary carcinoma of the breast: report of a case]. Zhonghua Bing Li Xue Za Zhi 2022; 51:372-374. [PMID: 35359056 DOI: 10.3760/cma.j.cn112151-20210712-00499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- W S Ge
- Department of Pathology, Shaoxing Women and Children Health Hospital, Shaoxing 312000, China
| | - M P Li
- Department of Pathology, Shaoxing Women and Children Health Hospital, Shaoxing 312000, China
| | - L Bao
- Department of Pathology, Shaoxing Women and Children Health Hospital, Shaoxing 312000, China
| |
Collapse
|
3
|
Xie XB, Li MP, Wang JS. [Transient infantile hypertriglyceridemia caused by GPD1 deficiency: report of two cases and literature review]. Zhonghua Er Ke Za Zhi 2020; 58:923-927. [PMID: 33120465 DOI: 10.3760/cma.j.cn112140-20200411-00375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical phenotype and genotype of transient infantile hypertriglyceridemia (HTGTI). Methods: The clinical data of two HTGTI children, diagnosed at Children's Hospital of Fudan University from July 2019 to January 2020, were collected and analyzed retrospectively. The literature up to 25th January 2020 were searched in PubMed, CNKI and Wanfang databases with the key words of "hypertriglyceridemia" and "glycerol phosphate dehydrogenase-1 (GPD1)". Results: Two children, including a 5-month-old female and a 13-month-old male, who presented with hepatomegaly, hypertriglyceridemia, transaminase elevation and hepatic steatosis, were admitted to the hospital. Gene detection found compound heterozygous variation of GPD1. After a low-fat diet with enriched medium-chain fatty acids, their plasma triglyceride level were significantly decreased, and finally normalized in case 2. Literature review found 17 patients with GPD1 gene variation reported in 5 papers, including 16 HTGTI cases and one case of different phenotype. Most of the cases presented with hepatomegaly, hypertriglyceridemia and transaminase elevation, while some had developmental retardation, splenomegaly, hypoglycemia, obesity and insulin resistance. The c.361-1G>C was the most common variation of GPD1. Conclusions: HTGTI caused by GPD1 deficiency is mainly manifested with hepatomegaly, hypertriglyceridemia, transaminase elevation as well as hepatic steatosis and fibrosis. The most common variation of GPD1 is c.361-1G>C.
Collapse
Affiliation(s)
- X B Xie
- The Center for Pediatric Liver Disease, Children's Hospital of Fudan University, Shanghai 201102, China
| | - M P Li
- The Center for Pediatric Liver Disease, Children's Hospital of Fudan University, Shanghai 201102, China
| | - J S Wang
- The Center for Pediatric Liver Disease, Children's Hospital of Fudan University, Shanghai 201102, China
| |
Collapse
|
4
|
Yu Y, Li MP, Xu B, Fan F, Lu SF, Pan M, Wu HS. A study of regulatory effects of TLR4 and NF-κB on primary biliary cholangitis. Eur Rev Med Pharmacol Sci 2020; 23:3951-3959. [PMID: 31115023 DOI: 10.26355/eurrev_201905_17824] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the regulatory effects of the Toll-like receptor 4 (TLR4) and the nuclear factor kappa-light-chain-enhancer of the activated B cells (NF-κB) on primary biliary cholangitis (PBC) and to analyze the possible mechanisms. MATERIALS AND METHODS A total of 24 C57BL/6 mice were randomly divided into M group (n=12, intraperitoneally injected with polyinosinic acid-polycytidine acid (PolyI:C) for 12 consecutive weeks, 2 times/week) and C group (n=12, intraperitoneally injected with the same volume of normal saline). After 12 weeks, the mice were sacrificed to collect liver tissues. Then, an enzyme-linked immunosorbent assay (ELISA) kit was used to detect the content of interleukin-6 (IL-6), IL-10, and tumor necrosis factor-alpha (TNF-α) in liver tissues. Hematoxylin-eosin (HE) staining assay was performed to observe the pathological changes of liver tissues, and measure the levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in peripheral blood of mice. Terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate-biotin nick end-labeling (TUNEL) staining was applied to determine cell apoptosis in liver tissues. The relative messenger ribonucleic acid (mRNA) expression levels of TLR4 and NF-κB in liver tissues were detected by quantitative Polymerase Chain Reaction (qPCR). Western blotting was adopted to measure the protein expressions of TLR4, NF-κB, myeloid differentiation factor 88 (MyD88), B-cell lymphoma 2 (Bcl-2)/Bcl-2-associated X protein (Bax), and Caspase-3. RESULTS Compared with that in C group, the content of IL-6 and TNF-α in liver tissues in M group was significantly increased (p<0.01), but the level of IL-10 was statistically downregulated (p<0.01). According to HE staining, liver damage of mice in M group was evidently severer than that in C group, and the levels of ALT and AST in M group were significantly higher than those in C group (p<0.01). The amount of TUNEL-positive cells in liver tissues in M group was significantly greater than that in C group (p<0.01). The levels of TLR4 and NF-κB mRNA in liver tissues from M group were significantly elevated in comparison with the C group (p<0.01). Compared with those in C group, the expressions of TLR4, NF-κB, MyD88, and Caspase-3 proteins in M group showed statistical increases in liver tissues (p<0.01), whereas that of Bcl-2/Bax was significantly declined (p<0.01). CONCLUSIONS PBC activates the TLR4/MyD88/NF-κB signaling pathway, induces the release of inflammatory factors and produces a large number of apoptotic proteins, which results in liver damage and cell apoptosis in mice.
Collapse
Affiliation(s)
- Y Yu
- Jinan University, Guangzhou, Guangdong, China.
| | | | | | | | | | | | | |
Collapse
|
5
|
Ma N, Sun YJ, Ren JH, Wang SY, Zhang YW, Ji XP, Li MP, Guo FJ. [Characteristics of renal cortical perfusion and its association with renal function among elderly patients with renal artery stenosis]. Zhonghua Xin Xue Guan Bing Za Zhi 2019; 47:628-633. [PMID: 31434434 DOI: 10.3760/cma.j.issn.0253-3758.2019.08.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the characteristics of renal cortical blood perfusion assessed by contrast-enhanced ultrasound (CEUS) in elderly patients with renal artery stenosis (RAS) and its relationship with renal function. Methods: Ninety-three elderly patients diagnosed with RAS, who were admitted in Beijing Hospital during June 2017 and December 2018, were retrospectively enrolled. According to the degree of RAS, 186 renal arteries were divided into normal renal artery group (n=79), mild RAS group (30% to 49%, n=59), moderate RAS group (50% to 70%, n=33), and severe RAS group (70% to 99%, n=15). Renal cortical blood perfusion and renal glomerular filtration rate (GFR) were measured by CEUS and radionuclide renal dynamic imaging. According to the renal GFR, 186 kidneys were divided into normal renal function group (GFR≥35 ml/min, n=42) and mild renal insufficiency group (35 ml/min>GFR≥25 ml/min, n=51), moderate renal insufficiency group (25 ml/min>GFR≥15 ml/min, n=75) and severe renal insufficiency group (GFR<15 ml/min, n=18). The renal cortical blood perfusion time-intensity curve (TIC) and related parameters were analyzed, including the area under the curve (AUC), the slope of the ascending branch (A), the peak intensity (PI), the peak time (TTP) and the mean transit time (MTT), the kidneys of different RAS groups and patients with different renal function groups were analyzed. Pearson correlation analysis was used to evaluate the correlation between renal cortical blood perfusion parameters and renal GFR. Results: (1) Renal cortical blood perfusion and GFR: CEUS showed that parameter A of TIC was significantly reduced, while TTP was prolonged in the mild renal artery stenosis group compared with the normal renal artery group (both P<0.05), GFP was similar between the two groups. Cortical perfusion parameters, such as AUC, A, PI and GFR were significantly lower, while TTP and MTT were significantly prolonged in the moderate and severe renal artery stenosis group than in the normal and mild stenosis groups (all P<0.05). Compared with the moderate stenosis group, AUC, A, PI and GFR were significantly lower while TTP, MTT were significantly prolonged in the severe renal artery stenosis group (all P<0.05). (2) TIC showed that the renal perfusion parameters, AUC, PI and A were significantly lower, while TTP was significantly longer in the mild renal dysfunction group than in the normal renal function group (all P<0.001). The changes aggravated in proportion with renal dysfunction. (3) Correlation between perfusion parameters and GFR: Pearson correlation analysis showed that the AUC (r=0.774, P<0.05), A (r=0.815, P<0.05) and PI (r=0.772, P<0.05) were positively correlated with GFR; serum creatinine level (r=-0.841, P<0.05), renal function grading (r=-0.731, P<0.05), TTP (r=-0.803, P<0.05) and MTT (r=-0.741, P<0.05) were negative correlated with GFR. The degree of stenosis was negatively correlated with GFR (r=-0.427, P<0.05). Conclusion: Cortical perfusion parameters differ significantly among patients with various degree of RAS and renal dysfunction. The renal cortical blood perfusion parameters are correlated with renal GFR.
Collapse
Affiliation(s)
- N Ma
- Department of Sonography, Beijing Hospital, National Center of Gerontology, Beijing 100730, China
| | | | | | | | | | | | | | | |
Collapse
|
6
|
Kuang DB, Zhou JP, Li MP, Tang J, Chen XP. Association of NPR3 polymorphism with risk of essential hypertension in a Chinese population. J Clin Pharm Ther 2017; 42:554-560. [PMID: 28497617 DOI: 10.1111/jcpt.12549] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 04/05/2017] [Indexed: 12/24/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Essential hypertension (EH) is a common disease exhibiting large individual difference in occurrence, development and treatment response. Genetic factors are implicated in the development and progression of EH. This study aimed to explore the association between NPR3 single nucleotide polymorphism rs2270915 (A/G, Asn521Asp) and the risk of EH in a Chinese Han population by a case-control study. METHODS The study was a single-centre, case-control trial, in which a total of 287 EH patients and 289 age- and sex-matched healthy controls were enrolled. The inclusion criteria were as follows: Han Chinese origin, male or female patients, systolic blood pressure (SBP) ≥140 mm Hg and/or diastolic blood pressure (DBP) ≥90 mm Hg. The healthy controls were subjects without histories of cardiovascular or cerebrovascular diseases. NPR3 rs2270915 polymorphism was genotyped by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). In addition, primary human umbilical vein endothelial cells (HUVECs) were isolated from 19 fresh human umbilical cords and cultured. Atrial natriuretic peptide (ANP) concentration in cell medium was determined by enzyme-linked immunosorbent assay (ELISA). NPR3 mRNA expression was determined by real-time semi-quantitative PCR. RESULTS AND DISCUSSION No significant difference in genotype distribution of NPR3 rs2270915 polymorphism was observed between cases and controls (P>.05). Patients carrying the rs2270915 G allele showed decreased SBP, and the difference was marginal. As compared with cells carrying the rs2270915 AA genotype, those with the AG genotype showed significantly lower NPR3 mRNA expression levels (P<.05) and lower medium ANP concentration (P<.001). WHAT IS NEW AND CONCLUSION This study suggested that NPR3 rs2270915 polymorphism was associated with decreased SBP level marginally in EH patients in a Chinese Han population, and the polymorphism may function through decreasing NPR3 mRNA expression and ANP level.
Collapse
Affiliation(s)
- D-B Kuang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, Hunan, China
| | - J-P Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Department of Cardiovascular Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - M-P Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, Hunan, China
| | - J Tang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, Hunan, China
| | - X-P Chen
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Pharmacogenetics, Institute of Clinical Pharmacology, Central South University, Changsha, Hunan, China
| |
Collapse
|
7
|
Li MP, Tang J, Zhang ZL, Chen XP. Induction of both P-glycoprotein and specific cytochrome P450 by aspirin eventually does not alter the antithrombotic effect of clopidogrel. Clin Pharmacol Ther 2015; 97:324. [PMID: 25669934 DOI: 10.1002/cpt.32] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- M P Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Hunan, P.R. China; Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Hunan, P.R. China
| | | | | | | |
Collapse
|
8
|
Abstract
OBJECTIVE To examine the association between smoking and depressive symptoms among Chinese elderly in Hong Kong. METHOD Cross-sectional data on smoking and depressive symptoms from 56,167 Chinese elderly aged 65 or over in Hong Kong were analysed using logistic regression. RESULTS Current smokers and former smokers were more likely to have depressive symptoms than never smokers. The adjusted odds ratios (OR) and 95% confidence interval (CI) in males and females respectively were 1.62 (1.34-1.96) and 1.43 (1.20-1.70) for current smokers, and were 1.18 (0.99-1.40) and 1.29 (1.12-1.47) for former smokers. Former smokers were less likely to have depressive symptoms than current smokers (OR = 0.80, 95% CI: 0.70-0.92). CONCLUSION Smoking is positively associated with depressive symptoms in Chinese elderly. Health care workers should be vigilant about the detection of depressive symptoms in elderly smokers.
Collapse
Affiliation(s)
- T H Lam
- Department of Community Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China.
| | | | | | | | | | | | | |
Collapse
|
9
|
Patel KR, Li MP, Schuh JR, Baldeschwieler JD. Modification of vesicle surfaces with amphiphilic sterols. Effect on permeability and in vivo tissue distribution. Biochim Biophys Acta 1985; 814:256-64. [PMID: 3978103 DOI: 10.1016/0005-2736(85)90443-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
In this paper, we describe the permeability of vesicles prepared with various synthetic cholesterol derivatives. Cholesterol derivatives with side-chains ending in hydroxyl groups reduced the permeability of unilamellar vesicles. However, addition of cholesterol derivatives with terminal amino groups makes the vesicles more permeable. Vesicles prepared with a short-chain amino-cholesterol derivative were found to be less permeable in phosphate-buffered saline, but not in bovine serum, while long-chain amino-cholesterol-containing vesicles were very permeable in both media. Studies in vivo indicate a rapid clearance rate for intravenously administered amino-cholesterol-containing vesicles with a concomitant increase in liver uptake. However, no difference was found in either the clearance or tissue distribution of control vesicles and the less permeable hydroxyl-cholesterol-containing vesicles.
Collapse
|
10
|
Patel KR, Li MP, Schuh JR, Baldeschwieler JD. The pharmacological efficacy of a rigid non-phospholipid liposome drug delivery system. Biochim Biophys Acta 1984; 797:20-6. [PMID: 6692008 DOI: 10.1016/0304-4165(84)90377-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Hydration of an ethoxylate derivative of cholesterol, triethoxycholesterol, results in the formation of stable, rigid, bilayer-like structures capable of encapsulating polar compounds. Studies on the stability and tissue distribution of these liposomes in mice indicate that they are suitable as a drug delivery system. Intraperitoneal injection of triethoxycholesterol encapsulated methotrexate into mice bearing hepatoma ascites tumor results in a doubling of the survival time, relative to untreated mice and those receiving unencaptulated drug. These studies show that fluid, acyl chains are not required for the formation of pharmacologically useful vesicles and that such formulations need not be limited to phospholipid-containing systems.
Collapse
|
11
|
Abstract
The effect of dextran sulfate (DS, 500,000 Mr) and multilamellar vesicles (MLV) as liver blockade agents has been investigated in mice. Intravenous injection of unlabeled MLV prior to radioactive MLV caused moderate reduction in the liver uptake and increased tibia, lung, and spleen uptake. More drastic differences were observed with intraperitoneal injection of DS. When tested in the range of 0-50 mg of DS per kg of body weight, maximal liver blockade occurred at a dose of 50 mg. By using 50 mg of DS per kg, maximal liver blockade occurred at 12 hr after DS injection. The liver blockade was temporary, ending within 48 hr. The intraperitoneal route of injection for DS was more effective for liver blockade than the intravenous route.
Collapse
|
12
|
Weisz A, Buzard RL, Horn D, Li MP, Dunkerton LV, Markland FS. Steroid derivatives for electrophilic affinity labelling of glucocorticoid binding sites: interaction with the glucocorticoid receptor and biological activity. J Steroid Biochem 1983; 18:375-82. [PMID: 6687618 DOI: 10.1016/0022-4731(83)90054-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
To investigate the possible use of electrophilic affinity labelling for the characterization of glucocorticoid receptors, different chemically reactive derivatives of deoxycorticosterone (deoxycorticosterone 21-mesylate and deoxycorticosterone 21-(1-imidazole) carboxylate), dexamethasone (dexamethasone 21-mesylate, dexamethasone 21-iodoacetate and dexamethasone 21-bromoacetate) and progesterone (21-chloro progesterone) were tested for their ability to bind irreversibly to the glucocorticoid receptor from goat lactating mammary gland. Using partially purified receptor, only one of the steroids tested, dexamethasone 21-mesylate (DXM-M) was found more effective than dexamethasone (DXM) in preventing exchange of radioactive dexamethasone in the receptor binding site. The affinity of DXM-M for the glucocorticoid receptor, measured by competitive binding assay, was 1/15 that of DXM. Polyacrylamide gel electrophoresis in sodium dodecyl sulphate of the [3H]-DXM-M labeled glucocorticoid receptor revealed a specific covalently radiolabeled fraction corresponding to an apparent molecular weight of 75,000 to 80,000. The biological activity of DXM-M was studied in RPMI 3460-clone 6 Syrian hamster melanoma cells, a cell line which is sensitive to growth inhibition by glucocorticoids. Like DXM, DXM-M inhibits the growth of RPMI 3460-clone 6 cells and it acts as a slowly reversible glucocorticoid agonist at concentrations which correlate with the affinity of DXM-M for the glucocorticoid receptor in vitro.
Collapse
|
13
|
Abstract
One hypothesis of the origin of pre-modern forms of life is that the original replicating molecules were specific polypeptides which acted as templates for the assembly of poly-Schiff bases complementary to the template, and that these polymers were then oxidized to peptide linkages, probably by photo-produced oxidants. A double cycle of such anti-parallel complementary replication would yield the original peptide polymer. If this model were valid, the Schiff base between an N-acyl alpha amino aldehyde and an amino acid should yield a dipeptide in aqueous solution in the presence of an appropriate oxidant. In the present study it is shown that the substituted dipeptide, N-acetyl-tyrosyl-tyrosine, is produced in high yield in aqueous solution at pH 9 through the action of H2O2 on the Schiff-base complex between N-acetyl-tyrosinal and tyrosine and that a great variety of N-acyl amino acids are formed from amino acids and aliphatic aldehydes under similar conditions.
Collapse
|
14
|
Dunkerton LV, Markland FS, Li MP. Affinity-labelling corticoids. I. Synthesis of 21-chloroprogesterone, deoxycorticosterone 21-(1-imidazole) carboxylate, 21-deoxy-21-chloro dexamethasone, and dexamethasone 21-mesylate, 21-bromoacetate, and 21-iodoacetate. Steroids 1982; 39:1-6. [PMID: 6896248 DOI: 10.1016/0039-128x(82)90120-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
15
|
Chan TH, Birmingham MK, Li MP. Antihypertensive action of 18,20-cyclo-20,21-dihydroxy-4-pregnen-3-one, a structural analogue of 18-hydroxydeoxycorticosterone. J Steroid Biochem 1976; 7:949-51. [PMID: 1025374 DOI: 10.1016/0022-4731(76)90017-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
16
|
|
17
|
Abstract
18-Hydroxydeoxycorticosterone is an adrenal steroid hormone causing salt and water retention and is secreted in greatly increased amounts in response to the pituitary hormone adrenocorticotropic hormone. Its production is abnormally high in some forms of hypertension in man and rat. Direct proof that 18-hydroxydeoxycorticosterone is capable of causing hypertension is present. Daily subcutaneous injections of 200 micrograms, a low physiological dose, significantly increase the blood pressure of unilaterally nephrectomized saline-treated rats after 2 weeks. This strengthens the hypothesis that 18-hydroxydeoxycorticosterone contributes to the etiology of hypertension, possibly by a mechanism involving stressinduced release of adrenocorticotropic hormone.
Collapse
|
18
|
Kraulis I, Traikov H, Li MP, Birmingham MK. The effects of corticosterone, 18-OH-DOC, DOC and 11 -hydroxyprogesterone on the adrenal pituitary axis of the stressed rat. J Steroid Biochem 1973; 4:129-37. [PMID: 4351916 DOI: 10.1016/0022-4731(73)90019-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
19
|
Kraulis I, Traikov H, Li MP, Lantos CP, Birmingham MK. The reduction of SU-4885 by adrenal glands and other tissues and its inhibition by ACTH. Can J Biochem 1968; 46:463-9. [PMID: 4298013 DOI: 10.1139/o68-070] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Rat adrenal glands convert 2-methyl-1,2-bis(3-pyridyl)-1-propanone (SU-4885) in vitro to a product with physical and chemical properties indicating the reduction to 2-methyl-1,2-bis(3-pyridyl)-1-propanol. The same compound is also formed by the reduction of SU-4885 with NaBH4. The reduction of SU-4885 also occurs in the presence of frog adrenal, rat kidney, and most actively, rat liver tissue, and depends on the concentration of SU-4885 in the incubation medium. Added deoxycorticosterone, at the concentration used, had no effect, but ACTH inhibited the reduction by both adrenal and liver tissue.
Collapse
|