5551
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Li H, Risbridger GP, Funder JW, Clements JA. Effect of ethane dimethane sulphonate on proopiomelanocortin (POMC) mRNA and POMC-derived peptides in the rat testis. Mol Cell Endocrinol 1989; 65:203-7. [PMID: 2550299 DOI: 10.1016/0303-7207(89)90181-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Recent studies have shown that both proopiomelanocortin (POMC)-derived peptides and a range of POMC gene transcripts are present in the testis. Previous immunocytochemical studies have reported immunoreactive (ir)-beta-endorphin (EP) and ir-ACTH to be localized in the Leydig cells, and ir-NacEP in spermatogonia and primary spermatocytes. In the present study, we have further examined the hypothesis that testicular Leydig cells are the principal site of synthesis of these peptides, by determining the effects of the administration of the cytotoxic drug ethane dimethane sulphonate (EDS) which selectively destroys the Leydig cells of the testis. As expected, serum testosterone levels fell and serum FSH/LH levels increased within 3 days of EDS administration, returning to normal levels 4-8 weeks later. In contrast, the testicular content of POMC-derived peptides and POMC mRNA levels in these animals was not significantly altered throughout the experimental period. In addition, POMC mRNA was not detected in a purified Leydig cell preparation derived from adult male rats, and POMC-derived peptides were also undetectable in the media of a similar preparation following cell culture. These data suggest that in the adult the predominant site of rat POMC gene expression is in testicular interstitial cells other than Leydig cells.
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5552
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Xu RK, Chen L, Li H, Yang SJ, Huang XY. [Effects of kappa-opiate receptor antagonist MR-2266-BS on ACTH and prolactin release]. SHENG LI XUE BAO : [ACTA PHYSIOLOGICA SINICA] 1989; 41:395-401. [PMID: 2557673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The effect of intravenous injection of different doses of MR-2266-BS, a selective antagonist of kappa-opiate receptor, on plasma adrenocorticotropin (ACTH) and prolactin (PRL) in conscious male rats bearing an intrajugular cannulae was assessed. The results revealed that the MR-2266-BS of 3 mg/kg completely blocked the restraint stress-induced increase in plasma ACTH levels, and further elevated plasma PRL levels in these animals, while there were no effects on the resting levels of ACTH and PRL. MR-2266-BS of 6 mg/kg significantly increased the resting levels of plasma ACTH and also further elevated the restraint stress-induced increase of plasma ACTH and PRL. The present data suggest that kappa-opiate receptor and its endogenous ligand may be involved in the regulation of the resting and restraint stress-induced release of ACTH, and their action appears to be both stimulatory and inhibitory. Furthermore, kappa-opiate receptor and its endogenous ligand may only inhibit the stress-induced release of PRL.
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5553
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Boehnke M, Arnheim N, Li H, Collins FS. Fine-structure genetic mapping of human chromosomes using the polymerase chain reaction on single sperm: experimental design considerations. Am J Hum Genet 1989; 45:21-32. [PMID: 2568090 PMCID: PMC1683385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The polymerase chain reaction (PCR) makes it possible to rapidly generate a very large number of copies of a specific region of DNA. Application of PCR to individual human sperm cells permits the typing of a large number of independent male meiotic events. If the donor male is heterozygous at three loci, sperm typing using PCR will permit ordering of loci in a manner analogous to classical methods of experimental genetics. Sequential analysis of trios of loci by sperm typing will provide a very accurate means of ordering any number of tightly linked loci. Here, we describe experimental design and sample-size issues raised by the application of sperm typing by PCR for mapping human chromosomes, and we demonstrate that sperm typing will be an efficient method for generating fine-structure human genetic maps.
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5554
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Zhang DN, Yin QX, Li XR, Li H, Zhang MS, Wang GG. [Cost-effectiveness analysis of two-dimensional/Doppler echocardiography, cardiac catheterization and angiography in the diagnosis of congenital heart disease]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1989; 20:186-9. [PMID: 2512246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
To compare the costs and effectivenesses of 2-dimensional/Doppler echocardiography (2D/DE), cardiac catheterization (CC) and angiography (CA) in the evaluation of cardiac anatomy in patients with congenital heart disease, these three kinds of examinations were performed in 100 patients before operation. The 100 patients had 120 separate cardiovascular abnormalities, of which 100 (83.3%) were prospectively identified by 2D/DE. The sensitivity and specificity of 2D/DE were: ASD, 87.9% and 100%; VSD, 97.9% and 96.1%; PDA, 86.7% and 98.2%, Tetralogy of Fallot, 6 of 6 patients; the overall sensitivity and specificity of the less common defects, 31.6% and 95.8%. Ninety-seven (80.8%) were prospectively identified by catheterization. The sensitivity and specificity of catheterization were: ASD, 87.9% and 100.0%; VSD, 80.9% and 94.6%; PDA 93.3% and 96.6%; Tetralogy of Fallot, 6 of 6 patients, the less common defects, 52.6% and 95.5%. Forty-five (81.8%) were prospectively identified by angiography in 55 patients. The sensitivity and specificity of angiography: ASD, 5 of 7 patients, VSD, 88.0% and 94.3%; PDA, 2 of 2 patients; Tetralogy of Fallot, 5 of 5 patients; the less common defects, 68.8% and 100.0%. The economic evaluations were performed. The costs of the depreciation (including equipments and houses), hospital bed, water and electricity, management and staffs' wage were: 2D/DE, RMB 46.09 per patient; catheterization, RMB 314.17 per patient; angiography, RMB 314.17. The ratios of cost to outcome (cost per correct diagnosis) of 2D/DE, CC and CA were: 55.33, 388.82 and 384.07 respectively.(ABSTRACT TRUNCATED AT 250 WORDS)
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5555
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Wang SQ, Du XR, Lü HW, Wang TL, Li H. Experimental and clinical studies of "Shen Yan Ling" in treatment of chronic glomerulonephritis. J TRADIT CHIN MED 1989; 9:132-4. [PMID: 2779276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
"Shen Yan Ling" (SYL) is a compound herbal preparation consisting of 16 ingredients: Herba Ecliptae, Radix Rhemanniae, Rhizoma Cibotii, Radix Angelica Sinensis, Rhizoma Ligustici Chuanxiong, Radix Paeoniae Rubra, Rhizoma Diosocoreae, Poria, Radix Sanguisorbae, Radix Rubiae, Herba Portulacae, Fructus Gardeniae, Herba Cirsii Japonici, Herba Cephalanoploris, etc. In animal experiments, SYL was shown to have therapeutic effect for Masugi's nephritis models. It has also been used with satisfactory results in the treatment of 314 cases of chronic glomerulonephritis of the common type with manifestations of Yin deficiency and endogenous heat.
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5556
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Yun SS, Li H, Cappelletti RL, Physics D, Matter C, Program SS, Enzweiler RN, Boolchand P. Onset of rigidity in Se1-xGex glasses: Ultrasonic elastic moduli. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 39:8702-8706. [PMID: 9947585 DOI: 10.1103/physrevb.39.8702] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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5557
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Kent JA, Li H, Chance B. HIGH-ENERGY PHOSPHATE AND HbO2/Mb02 LEVELS IN HUMAN SKELETAL MUSCLE DURING EXERCISE AT DIFFERENT WORK INTENSITIES. Med Sci Sports Exerc 1989. [DOI: 10.1249/00005768-198904001-00063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5558
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Li H, Schwinzer R, Baccarini M, Lohmann-Matthes ML. Cooperative effects of colony-stimulating factor 1 and recombinant interleukin 2 on proliferation and induction of cytotoxicity of macrophage precursors generated from mouse bone marrow cell cultures. J Exp Med 1989; 169:973-86. [PMID: 2784482 PMCID: PMC2189263 DOI: 10.1084/jem.169.3.973] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Precursor cells for NK activity, present in the light fraction of fresh mouse bone marrow, were cultivated in vitro in the presence of either CSF-1, IL-2, or a combination of both factors. In the presence of only CSF-1, strong proliferation was induced. Cells quickly passed the macrophage precursor stage and matured to typical macrophages. Neither granula formation nor NK activity were induced. Under culture conditions with only IL-2 NK activity had developed after 3 d, however, no significant proliferation occurred. In the presence of both factors strong proliferation was induced, and concomitantly, granula formation and NK activity developed. Apparently, proliferation depended on CSF-1 and granula formation, and NK cytotoxicity was induced by IL-2. When proliferating cells with strong anti-YAC-1 activity from a culture in CSF-1 plus IL-2 were further cultivated in only IL-2, the content of granula further increased, whereas proliferation gradually stopped. In contrast, when these cells from CSF-1 plus IL-2 culture were further cultivated in only CSF-1, granula disappeared and NK activity was lost, whereas sustained proliferation and differentiation to macrophages occurred. Only under culture conditions with both factors were proliferation and NK activity both maintained. More than 90% of cells from a 3-d culture in CSF-1 plus IL-2 expressed the NK 1.1. marker, whereas F4/80 was only marginally detected by FACS analysis. After two further days in culture, 70% of the cells expressed F4/80 and 60% coexpressed NK 1.1. and F4/80. By setting the size scatter in order to gate for large granular cells, a population was obtained with 100% coexpression of NK1.1. and F4/80. The data indicate that early cells of the macrophage lineage can develop into different functional and morphological directions depending on the varying influence of IL-2 and CSF-1.
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5559
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Li H. The current situation and tasks of China's population control. CHINA POPULATION NEWSLETTER 1989; 6:1-2. [PMID: 12282208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
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5560
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Li H. [Effects of PGE2 on experimental atherosclerosis]. ZHONGHUA XIN XUE GUAN BING ZA ZHI 1989; 17:39-41. [PMID: 2548822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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5561
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Huang H, Wei CM, Li H, Tonner BP, Tong SY. Quantitative structural determination of metallic film growth on a semiconductor crystal: ( sqrt 3-bar x sqrt 3-bar)R 30 degrees -->(1 x 1) Pb on Ge (111). PHYSICAL REVIEW LETTERS 1989; 62:559-562. [PMID: 10040266 DOI: 10.1103/physrevlett.62.559] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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5562
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Pan CY, Lu JM, Chang XM, Luo GC, Li H. Non-specific response of serum growth hormone to thyrotropin-releasing hormone in diabetics. Chin Med J (Engl) 1989; 102:41-4. [PMID: 2504551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
It is well known that growth hormone (GE) secretion and regulation in diabetics are abnormal. In order to evaluate the response of GH to nonphysiological stimuli in diabetics, a thyrotropin-releasing hormone (TRH) test (500 micrograms by IV bolus injection) was carried out in 12 patients with insulin-dependent diabetes (IDD, 6 males and 6 females). 11 noninsulin-dependent diabetes (NIDD, 5 males and 6 females), and 10 normal controls (6 males and 4 females). The results showed that the basal serum GH levels in diabetics were higher than that in normal controls and it was even higher in IDD than in NIDD. Following the TRH stimulus, the mean peak level of GH in IDD was the highest among the three groups, the differences being statistically significant (F = 9.323, P less than 0.01). It was concluded that a nonspecific response to TRH of GH did occur in IDD, and the peak values were even higher in female than in male subjects. A negative correlation existed between the GH peak values and the age of the patients as well as in the controls. This supported the view that GH responsiveness to TRH has a tendency of progressive decline with age. However, no significant correlation was found between the peak value of GH and the blood glucose level or the microangiopathic complications. The mechanism of TRH stimulation on GH release in diabetics is discussed.
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5563
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Li H, Yang H. Fast and reliable image enhancement using fuzzy relaxation technique. ACTA ACUST UNITED AC 1989. [DOI: 10.1109/21.44048] [Citation(s) in RCA: 64] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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5564
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Li H. [Effects of neurohypophysis hormones on the secretion of some adenohypophysis hormones]. SHENG LI KE XUE JIN ZHAN [PROGRESS IN PHYSIOLOGY] 1989; 20:45-8. [PMID: 2549619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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5565
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He YC, Yang CL, Shin LS, Li H. Passageway for recirculating lymphocytes in lymph node of the rat. Lymphology 1988; 21:239-41. [PMID: 3236900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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5566
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Li H. [Metastatic characteristics of SY86B human gastric carcinoma in athymic nude mice]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1988; 10:421-3. [PMID: 2855055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The invasive and metastatic behavior of SY86B human gastric carcinoma in nude mice were further studied. The results showed that this human cancer strain had a relatively high spontaneous metastatic rate (68.4%). The metastasis was related to the invasiveness of the transplanted tumor and tumor-bearing time. Since the metastasis developed from 2nd to 9th passages, it was considered that this model had a stable metastatic tendency. It was observed that the genetic background, age and sex difference of the recipient nude mice may not be associated with the metastasis. Aside from the high transplantable rate (100%) and spontaneous metastatic rate (68.4%), SY86B human gastric carcinoma strain still maintains the morphologic, immunologic, genetic and ultrastructural characteristics of the original tumor. All these make it a useful means in the study of diagnosis and treatment of cancer metastasis.
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5567
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Li H. [Sodium intake and blood pressure]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 1988; 9:302-7. [PMID: 3067859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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5568
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Li H, Lenz B, Walker DH. Protective monoclonal antibodies recognize heat-labile epitopes on surface proteins of spotted fever group rickettsiae. Infect Immun 1988; 56:2587-93. [PMID: 2458318 PMCID: PMC259616 DOI: 10.1128/iai.56.10.2587-2593.1988] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Thirty-eight monoclonal antibodies that have not been reported previously were developed from mice immunized with Rickettsia rickettsii, R. conorii, and R. sibirica. Western immunoblotting showed that these monoclonal antibodies are directed against heat-sensitive epitopes which are located on two major surface polypeptides with molecular sizes ranging from 115 to 150 kilodaltons. The detection of the two bands did not depend on the presence of 2-mercaptoethanol. Both bands were destroyed by treatment with proteinase K. Monoclonal antibodies examined by immunofluorescence assay reacted with epitopes that are species specific, group reactive, or shared among a smaller subset of species of spotted fever group rickettsiae. Nine of the monoclonal antibodies were evaluated for their ability to neutralize rickettsial infection and thus protect animals against disease caused by homologous species of rickettsiae. Treatment of rickettsiae with monoclonal antibodies F3-12, F3-14, and F3-36 completely protected guinea pigs against illness caused by the homologous organism R. rickettsii. Monoclonal antibodies F9-5G11 and F15-5B12, derived from mice immunized with R. sibirica, conferred partial protection by delaying the onset and shortening the duration of fever in guinea pigs inoculated with R. sibirica. Monoclonal antibodies F2-15, F2-31, F2-53, and F3-12 protected mice from a lethal infection with R. conorii. Heat-labile epitopes of spotted fever group rickettsial surface proteins are important candidate antigens for development of vaccines to confer protective immunity.
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5569
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Li H, Düzgüneş N, Ayanoğlu E, Djerassi C. Analogs of unusual sponge phospholipids. Synthesis and thermotropic properties of 1,2-di-(6Z,9Z)-6,9-hexacosadienoyl phosphatidylcholine and phosphatidylethanolamine. Chem Phys Lipids 1988; 48:109-17. [PMID: 2905212 DOI: 10.1016/0009-3084(88)90138-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The major marine sponge phospholipids 1,2-di-(5Z,9Z)-5,9-hexacosadienoyl phosphatidylcholine (PC) and phosphatidyl-ethanolamine (PE) hardly incorporate cholesterol into their liposomal bilayers, as reported earlier. Our previous studies indicated that their synthetic short chain (C18-C24) analogs with the same double bond pattern readily incorporated cholesterol, thus demonstrating the importance of the chain length. In order to investigate the possible role of the unusual delta 5,9 diunsaturation 1,2-di-(6Z,9Z)-6,9-hexacosadienoyl phosphatidylcholine and phosphatidylethanolamine were synthesized and their thermotropic behavior studied. Both analogs shows a transition endoterm at 45 degrees C, while the natural 1,2-di-(5Z,9Z)-5,9-hexacosadienoyl PC and its PE counterpart exhibited it at 42 degrees C. A partial incorporation of cholesterol into liposomal bilayers of 1,2-di-(6Z,9Z)-6,9-hexacosadienoyl PC was observed. Our results suggest that while the chain length is the predominant factor in the interactions of these phospholipids with sterols, the double bond location may also play a contributing role.
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5570
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Lu H, Mirshahi M, Krief P, Soria C, Soria J, Mishal Z, Bertrand O, Perrot JY, Li H, Picot C. Parallel induction of fibrinolysis and receptors for plasminogen and urokinase by interferon gamma on U937 cells. Biochem Biophys Res Commun 1988; 155:418-22. [PMID: 2843185 DOI: 10.1016/s0006-291x(88)81102-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A new cell sorter technique was employed to study the role of interferon gamma (INF gamma) in fibrinolysis induced by U937 monocytic cells. INF-gamma induced the differentiation of U937 cells as evidenced by the appearance of CD 14 antigen on the cell surface. Scatchard analysis and dose response curves showed a parallel increase in the number of receptors on U937 cells capable of accepting exogenous plasminogen and urokinase (UPA) synthetized by differentiating U937 monocytic cells. This would favour an activation of plasminogen by UPA. This adds a new parameter in the regulation of cell-mediated fibrinolysis and may be important in a number of biological processes.
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5571
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Abstract
A moderately differentiated tubular adenocarcinoma of human stomach, named SY86B, was successfully transplanted subcutaneously to nude mice of different genetic backgrounds (BALB/CA/PBI-nu, C57BL/6J.615/PBI-nu and ICR.BALB/CA/PBI-nu). The tumor has been passaged for 13 generations and the transplantability was 100%. The SY86B cells retained the capacity of invasive and metastatic growth in the nude mice and showed a high rate of metastasis to the regional lymph nodes and to such distant organs as the lungs, liver and pancreas. The overall rate of metastasis was 77.7%. The species of the nude mice, their age and sex apparently did not significantly affect the occurrence of metastasis. Tumor-bearing time and the aggressive character of the tumor cells themselves appeared important for the genesis of metastasis. This experimental model can provide a new approach to basic and clinical studies of cancer metastasis.
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5572
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Zhao CY, Yang Y, Li H, Zheng XL, Yang FH, Li Q. [Study on the inhibition of solid form of S-180 through water soluble polysaccharides from Flammulina velutipes]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1988; 19:146-9. [PMID: 3198094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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5573
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Li H, Tan JS. [Preliminary study on nasal cavity exfoliative cells in "lung diseases" in traditional Chinese medicine]. ZHONG XI YI JIE HE ZA ZHI = CHINESE JOURNAL OF MODERN DEVELOPMENTS IN TRADITIONAL MEDICINE 1988; 8:333-5, 323. [PMID: 3191549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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5574
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Li H. [Relation of the quantity of lipopolysaccharide in periodontal plaque and in calculus to the degree of periodontal inflammation]. ZHONGHUA KOU QIANG YI XUE ZA ZHI = ZHONGHUA KOUQIANG YIXUE ZAZHI = CHINESE JOURNAL OF STOMATOLOGY 1988; 23:136-9, 190. [PMID: 3208591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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5575
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Gao Y, Li H, Lin JH. [Clinical significance of propranolol therapy in patients with Graves' disease]. ZHONGHUA NEI KE ZA ZHI 1988; 27:234-6, 261-2. [PMID: 3219941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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5576
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Li H, Tonner BP. Real-space interpretation of x-ray-excited Auger-electron diffraction from Cu(001). PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 37:3959-3963. [PMID: 9945026 DOI: 10.1103/physrevb.37.3959] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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5577
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Li H, Liu YF, Yu DN. [Experimental and clinical use of porous biological membranes in the injured solid intra-abdominal organs]. ZHONGHUA WAI KE ZA ZHI [CHINESE JOURNAL OF SURGERY] 1988; 26:18-9, 60. [PMID: 3197530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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5578
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Han Z, Bourget L, Li H, Ulla M, Millman WS, Baum HP, Xu MF, Sarma BK, Levy M, Tonner BP. Single-target sputter deposition, post-processing and electron spectroscopy of perovskite superconductor thin films. ACTA ACUST UNITED AC 1988. [DOI: 10.1063/1.37082] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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5579
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Jerrells TR, Li H, Walker DH. In vivo and in vitro role of gamma interferon in immune clearance of Rickettsia species. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1988; 239:193-200. [PMID: 2974236 DOI: 10.1007/978-1-4757-5421-6_19] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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5580
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Lu H, Mirshahi M, Soria C, Soria J, Li H, Dosquet-Bernard C, Caen JP. Enhanced expression of urokinase activity on U 937 cell line by 1,25-dihydroxyvitamin D3 induction. THROMBOSIS RESEARCH. SUPPLEMENT 1988; 8:57-63. [PMID: 3144769 DOI: 10.1016/0049-3848(88)90154-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
1,25 Dihydroxyvitamin D3 is a differentiation inducer for monocytic cell. It can induce a monoblastic cell line U937 to differentiate. In this paper, we report that by inducing the differentiation of U937, 1,25-dihydroxyvitamin D3 increased urokinase activity expression on U937 cell surfaces. After incubation of the cell with various concentrations of 1,25-dihydroxyvitamin D3, the cell line showed a remarkable progressively increasing membrane-associated urokinase activity in a dose dependent manner. On the contrary, plasminogen activator inhibitor activity which was found in the culture medium is not modified by the 1,25-dihydroxyvitamin D3 induction. This results suggests another role of 1,25-hydroxyvitamin D3 in the treatment of myelofibrosis, since enhanced plasmin generation can accelerate the activation of procollagenase. The induced plasmin and collagenase activities surrounding the monocytic cells may participate in the physiological and pathological events, especially in the connective tissue degradation.
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5581
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Lu H, Mirshahi M, Soria C, Soria J, Li H, Dosquet-Bernard C, Caen J. Enhanced expression of urokinase activity on U 937 cell line by 1,25-Dihydroxyvitamin D3 induction. Thromb Res 1988. [DOI: 10.1016/s0049-3848(88)80007-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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5582
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Gülmez E, Li H, Cizewski JA. Level structure of 140Nd. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1987; 36:2371-2379. [PMID: 9954360 DOI: 10.1103/physrevc.36.2371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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5583
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Sun ZL, Li H, Yan S, Chen JJ, Sun ZF, Lin X. [A polymin-HRP-labeled probe for DNA hybridization]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1987; 18:321-3. [PMID: 3449420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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5584
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Wang JG, Walker DD, Li H, Lenz B, Jerrells TR. Barbash strain spotted fever group rickettsia is a strain of Rickettsia conorii and differs from Rickettsia sibirica. Acta Virol 1987; 31:489-98. [PMID: 2894143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The Barbash strain of spotted fever group rickettsia was reexamined in this study by the microimmunofluorescence test with mouse antisera and with monoclonal antibodies. Protein immunoblotting was performed for comparison of purified antigens of R. rickettsii, R. sibirica, R. conorii and Barbash strain. Comparison of Barbash strain, R. rickettsii (Sheila Smith strain), R. conorii (Malish 7 strain), and R. sibirica (strains 232, 246 and Jinghe-74) of the spotted fever group in the microimmunofluorescence test of Philip et al. revealed that Barbash strain has antigens that yield homologous titers with the R. conorii strains and differ from R. sibirica and R. rickettsii. Monoclonal antibodies specific for R. conorii react at identical titres with the Barbash strain, and a monoclonal antibody specific for R. sibirica does not react with the Barbash strain. Likewise, T-cell hybridomas reactive with R. conorii but not R. sibirica yield a strong response when stimulated by Barbash strain antigens. Western immunoblotting with the same polyclonal and monoclonal antibodies confirmed the presence of specific protein antigens of R. conorii and different protein antigenic composition of R. sibirica when compared with Barbash strain. Thus, Barbash strain is a strain of R. conorii.
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5585
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Huang YZ, Liao MY, Li H. [Catheter ablation of the A-V junction to control refractory supraventricular tachycardia in 5 cases]. ZHONGHUA XIN XUE GUAN BING ZA ZHI 1987; 15:275-7, 310-1. [PMID: 3440431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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5586
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Qiu JM, Li H, Huang FQ, Yang J, Yin YM, Liu XL, Wang XY. Effect of prostaglandin E2 on experimental atherosclerosis. Chin Med J (Engl) 1987; 100:703-8. [PMID: 3127142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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5587
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Li H. [The effects of electro-acupuncture on exudate volume and TXB2, 6-keto-PGF1 alpha content in the pleural cavity after carrageenin-induced pleurisy in rats]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1987; 9:271-6. [PMID: 2964932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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5588
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Tonner BP, Li H, Robrecht MJ, Onellion M, Erskine JL. Photoemission study of the valence band of Pb monolayers on Ge(111). PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 36:989-997. [PMID: 9942904 DOI: 10.1103/physrevb.36.989] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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5589
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Deng GR, Lu YY, Chen SM, Miao J, Lu GR, Li H, Cai H, Xu XL, E Z, Liu PN. Activated c-Ha-ras oncogene with a guanine to thymine transversion at the twelfth codon in a human stomach cancer cell line. Cancer Res 1987; 47:3195-8. [PMID: 3034404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The rat fibroblast cell line Rat 1 was transfected with total DNA of a gastrocarcinoma cell line, BGC-823. The transforming gene was cloned from the genomic library of the secondary transformants using in situ hybridization with a probe of the human Alu repeat sequence. This cloned gene is homologous to the protooncogene c-Ha-ras. The activation lesion of the transforming gene was identified by sequence analysis as a single nucleotide substitution of thymine for guanine in the 12th codon. This results in the substitution of valine for glycine at the 12th amino acid of the Mr 21,000 protein.
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5590
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Li H, Dong KQ, Qu XH, Qi GJ, Kong LJ, Li W, Wang GZ, Liu AJ, Cui JC, Wang BX. Clinical observation and experimental studies on the effectiveness of fu yan kang on chronic pelvic inflammatory diseases. J TRADIT CHIN MED 1987; 7:109-12. [PMID: 3448388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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5591
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Li H, Jerrells TR, Spitalny GL, Walker DH. Gamma interferon as a crucial host defense against Rickettsia conorii in vivo. Infect Immun 1987; 55:1252-5. [PMID: 3106216 PMCID: PMC260498 DOI: 10.1128/iai.55.5.1252-1255.1987] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Gamma interferon (IFN-gamma) plays an important role as a host defense in rickettsial infection. Swiss Webster mice, which are resistant to Rickettsia conorii (Malish 7 strain) infection, were treated with a monoclonal antibody against mouse IFN-gamma. When the antibody-treated mice were inoculated with 12 50% tissue culture infective doses of R. conorii, the mortality was 47% and the morbidity was 100%. None of the control mice, which received the same dose of R. conorii, died or became ill. The enumeration of rickettsiae in organs by direct immunofluorescence in paraffin sections demonstrated higher quantities of rickettsiae in the spleen had liver of IFN-gamma-depleted mice as compared with those of the infected controls. The kinetic analysis of IFN-gamma levels in sera showed depletion in the treated mice. These results indicate that IFN-gamma plays an important role as a host defense in the early stage of rickettsial infection. Survival of some mice despite continued treatment with antibody to IFN-gamma suggests that other immune mechanisms may also be important.
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5592
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Kubo H, Li H, Kobayashi Y, Kinoshita T. Fluorometric determination of streptomycin in serum by high-performance liquid chromatography using mobile phase containing fluorogenic reagent. Anal Biochem 1987; 162:219-23. [PMID: 3605589 DOI: 10.1016/0003-2697(87)90030-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A new postcolumn derivatization method for the fluorometric determination of streptomycin in serum by high-performance liquid chromatography is described. The serum was treated with 3.5% perchloric acid to precipitate proteins and the supernatant was directly injected into the chromatograph. Streptomycin was separated by reversed-phase, ion-pair chromatography with a mobile phase containing ninhydrin as a fluorogenic reagent, octanesulfonate, and 1,2-ethanedisulfonate as counterions, and was detected by fluorescence using continuous-flow, postcolumn derivatization in an alkaline stream with ninhydrin in the mobile phase. This method is sensitive to 1.0 microgram/ml using only 100 microliter of serum. Comparison with a fluorescence polarization immunoassay gave a good correlation coefficient of 0.976.
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5593
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Li H, Jiang MY, Jin EB. [Effects of Codonopsis pilosula on experimental gastric ulcers in the rat]. ZHONG XI YI JIE HE ZA ZHI = CHINESE JOURNAL OF MODERN DEVELOPMENTS IN TRADITIONAL MEDICINE 1987; 7:163-5, 134. [PMID: 3607967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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5594
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Tonner BP, Li H, Robrecht MJ, Chou YC, Onellion M, Erskine JL. Temperature dependence of photoelectron scattering from a monolayer. PHYSICAL REVIEW. B, CONDENSED MATTER 1986; 34:4386-4389. [PMID: 9940220 DOI: 10.1103/physrevb.34.4386] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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5595
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Liu BS, Li H. General situation and features of geriatric epidemiological study in China. Chin Med J (Engl) 1986; 99:619-27. [PMID: 3100215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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5596
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Liu BS, Li H. [Some epidemiologic aspects of the aged in China]. ZHONGHUA YI XUE ZA ZHI 1986; 66:501-3. [PMID: 3096540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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5597
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Lü YY, Lu GR, Xu XL, Ee Z, Miao J, Li H, Cai H, Chen SM, Deng GR, Liu PN. [DNA transformation activity of a human gastrocarcinoma cell line]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1986; 8:241-4. [PMID: 3757734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
DNAs of three cell lines of human gastrocarcinoma (MGC-803, BGC-823 and PACM-82) and two fresh solid tumors of human stomach cancer were used to transfect NIH3T3 and Rat-1 cells. The transformed cells were selected with high concentration of glucose and low concentration of serum, or with medium containing Geneticin (G418) after co-transfection of pSVneo and DNAs of stomach cancer cell line or primary transformants. From the second round transfection, we had obtained transformants which could grow with high colony forming efficiency in soft agarose and were tumorigenic in nude mice. The southern blot analysis showed that the cellular DNA of the transformants contained human Alu repeat sequence and the transformed gene from stomach cancer cell line (BGC-823) and was homologous to proto-oncogene c-Ha-ras. The transforming gene is able to induce neoplastic transformation of NIH3T3 and Rat-1 cells.
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5598
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Chen JK, Tang JF, Du LS, Li H. Radiologic analysis of 540 normal Chinese sella turcica. Chin Med J (Engl) 1986; 99:479-84. [PMID: 3100189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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5599
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Li H, Dong KQ. [Clinical observation and experimental research on the treatment of chronic pelvic inflammation with "fu yan kang"]. ZHONG XI YI JIE HE ZA ZHI = CHINESE JOURNAL OF MODERN DEVELOPMENTS IN TRADITIONAL MEDICINE 1986; 6:222-4, 196. [PMID: 2945660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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5600
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He BL, Jin B, Li H. [Narcotics combined with low-flow nitrous oxide in open-heart surgery]. ZHONGHUA WAI KE ZA ZHI [CHINESE JOURNAL OF SURGERY] 1986; 24:233-5, 254-5. [PMID: 2875855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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