4151
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Li Z, Qi Z, Deelder AM, Su X. [Quantification of gut-associated schistosome circulating proteoglycan and its specific immune complexes in patients with schistosomiasis japonicum]. ZHONGHUA YI XUE ZA ZHI 1991; 71:450-2. [PMID: 1660767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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4152
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Arndt RA, Li Z, Roper LD, Workman RL. Pion-nucleon coupling constant. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1991; 44:289-290. [PMID: 10013741 DOI: 10.1103/physrevd.44.289] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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4153
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Li Z, Ambigapathy R, Petschek RG, Rosenblatt C. Dynamics of the nematic-electroclinic effect. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 43:7109-7112. [PMID: 9905076 DOI: 10.1103/physreva.43.7109] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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4154
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Xu X, Guo P, Song Y, Li Z. [The contents of gamma-aminobutyric acid and glutamic acid in brain affected by coriaria lactone]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1991; 22:213-5. [PMID: 1686259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Capillary chromatography was applied to studying the contents of gamma-aminobutyric acid (GABA) and glutamic acid (Glu) in brain affected by coriaria lactone. The results showed that there was a significant increase in the content of Glu whereas no significant change in the content of GABA was noted. The precisions for GABA and Glu were 3.3% and 4.98% and the recoveries of them were 80.5% and 85.2%, respectively. Capillary chromatography is a good method for determining the contents of GABA and Glu in brain, which has the characteristics of rapid and high sensitivity.
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4155
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Yip R, Li Z, Chong WH. Race and birth weight: the Chinese example. Pediatrics 1991; 87:688-93. [PMID: 2020515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
In several studies a race-specific variation in birth weight was suggested between black infants and white infants. The following were compared: (1) the birth weight of Chinese infants born in mainland China, Taiwan, and the United States; and (2) the birth weight of Chinese infants and white infants born in the United States controlled for sociodemographic background. Similar birth weight distributions and incidence of low birth weight were found among Chinese infants born in the three areas with markedly different economic conditions. The women in all three areas appear to have met the basic health and nutritional needs for adequate fetal growth. Similar incidence of low birth weight with different birth weight distribution was found among infants born in the United States to two Chinese parents, to one Chinese parent and one white parent, and to two white parents. The variation in birth weight is greater for white infants than for Chinese infants and, consequently, more white infants had larger birth weight. The possibility of race-specific influences on birth weight distribution is suggested by these findings.
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4156
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Chen H, Li Z, Guo J, Yang W, Su H, Zhou X, Zhang A, Mao D. In vivo inhibition of HBsAg and DHBsAg expression in ducks after injection of HBsAg or DHBsAg antisense vaccinia recombinant. Antiviral Res 1991. [DOI: 10.1016/0166-3542(91)90252-m] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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4157
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Li Z. [Serologic investigation of HBV in 302 patients who had a history of smallpox]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 1991; 12:83-6. [PMID: 2065347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This paper provides serologic investigation of HBV in 302 persons who had a history of smallpox in Zhumadian County. The results showed that the HBsAg positivity rate (1.3%) was significantly lower than those of the control group 1 (8.3%) and 2 (8.6%) (P less than 0.001). The HBsAg positivity rate between the two control groups had no significant difference (P greater than 0.05). The HBV infection rate (19.2%) was also lower than those of control group 1 (47.7%) and 2 (51.3%) (P less than 0.001). There was not much difference between the two control groups. The determination of cellular immunity showed that the rosette positivity rate (75.93%) and lymphocyte conversion rate (70.39%) of the patients' group were higher than those of control group 1 (62.3% and 52.9%) and 2 (60.93% and 55.3%). It may suggested that patients having had smallpox might have enhanced cellular immunity which might interfere with HBV infection.
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4158
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Arndt RA, Li Z, Roper LD, Workman RL, Ford JM. Pion-nucleon partial-wave analysis to 2 GeV. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1991; 43:2131-2139. [PMID: 10013597 DOI: 10.1103/physrevd.43.2131] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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4159
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Herz AV, Li Z. Statistical mechanics of temporal association in neural networks with transmission delays. PHYSICAL REVIEW LETTERS 1991; 66:1370-1373. [PMID: 10043188 DOI: 10.1103/physrevlett.66.1370] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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4160
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Yu R, Li X, Song L, Zhang R, Zhu T, Yang G, Li Z, Yang B. [Toxic principles of Oxytropis glabra DC]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1991; 16:160-3, 191. [PMID: 1883498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Eight alkaloids were isolated from Oxytropis glabra and identified as anagirine, thermopsine, N-methylcytisine, sparteine, baptifoline, adenine, dictamnine and ethyl allophanate respectively by spectral analysis and physicochemical methods. All these alkaloids were isolated from this genus for the first time and ethyl allophanate was found in nature for the first time.
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4161
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Guo ZD, Li Z, Ruan Y, Cong H, Zhang KY. [Distribution of muscarinic receptors of different affinities in smooth muscle of human stomach]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1991; 12:180-3. [PMID: 1776486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Muscarinic receptors of high and low affinity were found in the fundus and the body of human stomach through the contraction experiment combined with ligand method in vitro. The 2 types of muscarinic receptors with different affinity regulated respectively the contractions of the longitudinal and the circular muscle of human gastric fundus and gastric body. However, in the antrum exists only one kind of muscarinic receptors of high affinity, which regulated the contractions of the longitudinal and the circular muscles of human stomach. The contractile force of the longitudinal muscle induced by exogenous ACh in the fundus and that in the body of human stomach were found to be similar to each other. The contractile force of the circular muscle in the body was found to be the strongest, and the contractile force of both longitudinal and circular muscles in antrum was weaker.
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4162
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Guo P, Li Z, Hong Z, Liu S, Wu T. [Determination of berberine hydrochloride in traditional Chinese medicines containing Coptis chinensis Franch by reversed phase high performance liquid chromatography]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1991; 22:90-2. [PMID: 1774045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This paper reports a reversed phase high performance liquid chromatography method to determine berberine hydrochloride in Coptis chinensis Franch and in the traditional Chinese medicine containing Coptis chinensis Franch. The result shows that the mobile phase of 0.4mol/L ammonium nitratemethanol (52:48) can give a satisfactory separation. The extraction of sample with 1% H2SO4 solution using the ultrasonic vibration method is simple and easy to operate.
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4163
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Li Z, Akins RB, DiLisi GA, Rosenblatt C, Petschek RG. Anomaly in the dynamic behavior of the electroclinic effect below the nematic-smectic-A phase transition. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 43:852-857. [PMID: 9905102 DOI: 10.1103/physreva.43.852] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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4164
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Li Z, Nicoll DA, Collins A, Hilgemann DW, Filoteo AG, Penniston JT, Weiss JN, Tomich JM, Philipson KD. Identification of a peptide inhibitor of the cardiac sarcolemmal Na(+)-Ca2+ exchanger. J Biol Chem 1991; 266:1014-20. [PMID: 1985930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The deduced amino acid sequence of the cardiac sarcolemmal Na(+)-Ca2+ exchanger has a region which could represent a calmodulin binding site. As calmodulin binding regions of proteins often have an autoinhibitory role, a synthetic peptide with this sequence was tested for functional effects on Na(+)-Ca2+ exchange activity. The peptide inhibits the Na(+)-dependent Ca2+ uptake (KI approximately 1.5 microM) and the Nao(+)-dependent Ca2+ efflux of sarcolemmal vesicles in a noncompetitive manner with respect to both Na+ and Ca2+. The peptide is also a potent inhibitor (KI approximately 0.1 microM) of the Na(+)-Ca2+ exchange current of excised sarcolemmal patches. The binding site for the peptide on the exchanger is on the cytoplasmic surface of the membrane. The exchanger inhibitory peptide binds calmodulin with a moderately high affinity. From the characteristics of the inhibition of the exchange of sarcolemmal vesicles, we deduce that only inside-out sarcolemmal vesicles participate in the usual Na(+)-Ca2+ exchange assay. This contrasts with the common assumption that both inside-out and right-side-out vesicles exhibit exchange activity.
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4165
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Brown R, Li Z, Vriend CY, Nirula R, Janz L, Falk J, Nance DM, Dyck DG, Greenberg AH. Suppression of splenic macrophage interleukin-1 secretion following intracerebroventricular injection of interleukin-1 beta: evidence for pituitary-adrenal and sympathetic control. Cell Immunol 1991; 132:84-93. [PMID: 1648453 DOI: 10.1016/0008-8749(91)90008-y] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Intracerebroventricular (ICV) injections of interleukin-1 beta (IL-1 beta) produced a dose-dependent increase in plasma corticosterone and adrenocorticotropic hormone (ACTH) within 2 hr of injection and then declined over the next 24 hr. Using a potent steroidogenic dose of IL-1 beta (5 ng), ICV injection resulted in suppression of splenic macrophage IL-1 secretion following stimulation by LPS in vitro. Macrophage TGF-beta secretion was not affected, indicating a differential action of ICV IL-1 beta on macrophage cytokine production. Following adrenalectomy (ADX), the suppressive effect of ICV IL-1 beta was reversed and resulted in stimulation of macrophage IL-1 secretion, indicating that the suppression was mediated by adrenocorticol activation. However, surgical interruption of the splenic nerve to eliminate autonomic innervation of the spleen also prevented the macrophage suppressive signal in rats given ICV IL-1 beta. Furthermore, the combination of ADX and splenic nerve section resulted in a potent stimulatory effect of ICV IL-1 beta on splenic macrophage IL-1 secretion which was greater than either ADX or splenic nerve section alone. These results support the concept of a negative feedback on macrophage IL-1 secretion by the central action of IL-1 beta and indicate that both the hypothalamic-pituitary-adrenal axis and the sympathetic nervous system mediate this effect.
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4166
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Liu YL, Lin LM, Zhu J, Zhang ZJ, Li Z. Case-control study on pathogenesis of pneumonia in children aged 0-2 years. Chin Med J (Engl) 1991; 104:22-6. [PMID: 1879191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
In order to know the incidence of risk factors predisposing children to pneumonia, case control study was carried out in six MCH Model Counties in 1986. Single factor analysis showed 29 factors were responsible for the increasing incidence of pneumonia. 13 of 29 factors were major pneumonia risk factors by the standard of means greater than 15 and OR greater than 3. They were malnutrition, anemia, riskets, pneumonia history, repeated colds, chronic diarrhoea, congenital malformation, asphyxia neonatorum, amniotic fluid aspiration, artificial feeding, too much clothing, family member with acute respiratory illness (ARI) and contact with ARI patients. Among them 7 factors were related to individual health condition. Therefore, it is important to improve general health of children so as to reduce the incidence of pneumonia.
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4167
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Tarn TJ, Bejczy A, Yun X, Li Z. Effect of motor dynamics on nonlinear feedback robot arm control. ACTA ACUST UNITED AC 1991. [DOI: 10.1109/70.68075] [Citation(s) in RCA: 216] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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4168
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Li Z, Tarn TJ, Bejczy A. Dynamic workspace analysis of multiple cooperating robot arms. ACTA ACUST UNITED AC 1991. [DOI: 10.1109/70.97870] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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4169
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Zhao X, Li Z, Chen Y, Sun J. [Identification of 10 kinds of Zanthoxylum by pyrolysis GC]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1990; 15:709-11, 763. [PMID: 2282166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In this paper, pyrolysis GC was applied to differentiate and fingerprint 10 kinds of Zanthoxylum on an OV-101 capillary column. Analytical conditions with this column, operating temperature, pyrolysis time and peak identifications are discussed.
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4170
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Li Z. [Results of total gastrectomy in the treatment of adenocarcinoma of the cardia in advanced stages]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1990; 12:401-4. [PMID: 2151256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Over an 8 year period, 66 patients with adenocarcinoma of the cardia in advanced stages underwent total gastrectomy. The operative morbidity rate was 7.5% and the post-operative mortality rate (1 month) was 1.5%. The post-operative 1,3,4, and 5 year survival rates were 69%, 30.7%, 20% and 13.8% respectively. The quality of life after surgery was improved. Pathologic type, lymph node metastasis, incomplete resection and post-operative chemotherapy were the main factors influencing post-operative survival. Indications for total gastrectomy and the advantages of transthoracic total gastrectomy are discussed.
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4171
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Arndt RA, Workman RL, Li Z, Roper LD. Pion photoproduction resonance couplings in the second resonance region. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1990; 42:1864-1866. [PMID: 9966930 DOI: 10.1103/physrevc.42.1864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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4172
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Arndt RA, Workman RL, Li Z, Roper LD. Partial-wave analysis of pion photoproduction. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1990; 42:1853-1863. [PMID: 9966929 DOI: 10.1103/physrevc.42.1853] [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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4173
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Close FE, Li Z. Photo- and electroproduction of N* in a quark model. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1990; 42:2194-2206. [PMID: 10013073 DOI: 10.1103/physrevd.42.2194] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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4174
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Li Z, Li Z. [Blood specimen collection in patients with cyanotic congenital heart disease]. ZHONGHUA HU LI ZA ZHI = CHINESE JOURNAL OF NURSING 1990; 25:511-2. [PMID: 2261675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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4175
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Li Z. [Changes in induced interleukin-1 and interleukin-2 activity and their interrelationship in patients with schistosomiasis japonica]. ZHONGHUA YI XUE ZA ZHI 1990; 70:552-5, 38. [PMID: 2176563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Activities of IL-1 produced by peripheral blood monocytes stimulated with lipopolysaccharide and IL-2 released by peripheral blood mononuclear cells induced by PHA, SWAP and SEA in vitro were detected in patients with various stages of schistosomiasis japonica. It was found that the activity of IL-1 was greatly increased and positively related to the body temperature, and high level of IL-2 was induced by SWAP and SEA in the group of acute schistosomiasis. The activity of IL-1 was significantly reduced in the groups of chronic and advanced schistosomiasis, especially in the latter group. The level of IL-2 induced by SWAP and SEA in the groups of chronic and advanced schistosomiasis was significantly lower than that in the group of acute schistosomiasis, but was much higher than that in the group of normal control. The level of IL-2 induced by SWAP and SEA in the cases of acute schistosomiasis was positively related to the activity of IL-1. The results indicate that the specific cellular immunity was increased in acute cases and decreased in chronic cases of schistosomiasis japonica. Both specific and nonspecific cellular immune responses were greatly reduced in cases of advanced schistosomiasis japonica. IL-1 and IL-2 may play an important role in the immunoregulation of schistosomiasis japonica.
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