851
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Guo Z, Yang G, Chu F, Zhang S, Yu Y. Studies on antipeptic ulcer agents: the quantitative structure-activity relationship analysis of heterocyclic aldehyde N4-substituted phenyl (thio) semicarbazones. CHINESE MEDICAL SCIENCES JOURNAL = CHUNG-KUO I HSUEH K'O HSUEH TSA CHIH 1991; 6:71-3. [PMID: 1804380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Forty-five condensation products of furan-, pyrrole- and N-methyl pyrrole-alpha-carboaldehyde with N4-3- or N4-4-substituted phenyl semicarbazones and thiosemicarbazones were designed to optimize the antiulcer activity of a previously derived lead structure, formula II. Quantitative structure-activity relationships revealed that among the series of semicarbazones, increasing hydrophobicity and the introduction of electron-donating groups into the phenyl ring raise the antiulcer activity. Generally, semicarbazones are more active than the corresponding thiosemicarbazones. The wide gulf between the activity and toxicity of two derivatives (Compounds III and IV) necessitates further investigation of their pharmacological effects.
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852
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Dahl HH, Hutchison WM, Guo Z, Forrest SM, Hansen LL. Polymorphisms in the human X-linked pyruvate dehydrogenase E1 alpha gene. Hum Genet 1991; 87:49-53. [PMID: 1674716 DOI: 10.1007/bf01213091] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Pyruvate dehydrogenase E1 alpha deficiency is an X-chromosome-linked disorder, often with fatal consequences. We have searched for genetically useful polymorphisms in or near this gene. No restriction fragment length polymorphisms were detected using a battery of 36 different restriction enzymes and probing with a full-length cDNA fragment, or two single-copy genomic fragments located within intron 8, and 15 kb 3' of the coding region, respectively. The chemical cleavage method was then applied to the detection of base changes in or near the gene. One polymorphism was found in exon 8 of the coding region. However, no base changes were detected in intron 3 or in the part of intron 8 covered by fragment gB2. Three blocks of microsatellite DNA containing variable numbers of CA-repeats were isolated from the 5' end of the gene and characterized. Length polymorphisms in these microsatellite DNAs were analysed using the polymerase chain reaction. Although the three loci are tightly linked, the polymorphisms appear not to be in disequilibrium, making them useful markers in linkage studies of the pyruvate dehydrogenase E1 alpha gene. Of 31 females analysed 12(39%) were heterozygous for at least one length polymorphism of the three (CA)n alleles.
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853
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Guo Z, Tan T, Zhong Y, Wu C. [Study of the mechanism of gastrodin and derivatives of gastrodigenin]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1991; 22:79-82. [PMID: 1663484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The tritiated alpha-isobutylhydroxybenzyl alcohol (3H-G018) was found to be able to bind benzodiazepine (BZ) receptor on the rat brain membrane. The 125I labeled G-018 also had the similar binding activity with this receptor. In the present investigation, we observed that gastrodigenin and its derivatives inhibited the 125I-G018 binding of BZ receptor competitively, but no inhibition was observed with gastrodin. The results suggested that Gastrodigenin was bound to BZ receptor, and otherwise, gastrodin would have no direct interaction with BZ receptor. Probably, it might metabolize into gastrodigenin in vivo, and then got through the blood brain barrier and bound to BZ receptor, which mediated its pharmacological effects on the central nervous system.
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854
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Hu JQ, Guan YH, Zhao LZ, Xie SX, Guo Z, Liang ZH. Delayed radiation encephalopathy after radiotherapy for nasopharyngeal cancer: a CT study of 45 cases. J Comput Assist Tomogr 1991; 15:181-7. [PMID: 2002093 DOI: 10.1097/00004728-199103000-00001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The CT features of 45 cases of delayed radiation encephalopathy (including radiation necrosis) following radiotherapy for nasopharyngeal carcinoma are reported. The brain lesions were uni- or bilateral and involved mainly the white matter and subsequently the gray matter of the lower portion of the brain included within the portals of irradiation and its vicinity. The lesions were edematous and hypodense on CT and showed postcontrast enhancement in 50% of the cases. Within the period of follow-up (1-5 years), the lesions showed remissions and exacerbations and in some cases stabilized. In addition, there was progressive cerebral atrophy, manifesting itself mainly as dilatation of the temporal horns, the neighboring cisterns, and sylvian fissures. In some cases that were followed for a long time, the cerebral lesions showed either foci of calcification or encephalomalacia and/or porencephaly.
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855
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Gui Y, Guo Z, Ke S, Skirvin RM. Somatic embryogenesis and plant regeneration in Acanthopanax senticosus. PLANT CELL REPORTS 1991; 9:514-516. [PMID: 24213792 DOI: 10.1007/bf00232108] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/1990] [Revised: 11/05/1990] [Indexed: 06/02/2023]
Abstract
Mature embryos of Acanthopanax senticosus explanted on Murashige and Skoog (MS) medium with 0.5 mg/1 2,4-D developed somatic embryos directly from swollen cotyledon and embryo axes within one to two months. When the somatic embryos were transferred to medium supplemented with 2,4-D (0.5 mg/1) or IAA (1-3 mg/1) or Zeatin (0.5 mg/1) and NAA (0.2 mg/1), additional somatic embryos developed. Most (93%) embryos germinated on the above medium without 2,4-D. Sixty-two percent of the plantlets survived in soil. Histological observations revealed that the somatic embryos originated from cell masses of epidermal and sub-epidermal origin. There was no cytological separation zone between the somatic embryos and cultured expiants. Consequently, embryos were difficult to separate from their expiant tissue.
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856
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Guo Z. Projection for household development in China. CHINESE JOURNAL OF POPULATION SCIENCE 1991; 3:121-9. [PMID: 12317649] [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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857
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858
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Guo Z, Sharma V, Patterson D, Litt M. Dinucleotide repeat polymorphism at the D21S168 locus. Nucleic Acids Res 1990; 18:5924. [PMID: 2216806 PMCID: PMC332377 DOI: 10.1093/nar/18.19.5924-a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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859
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Guo Z, Sharma V, Patterson D, Litt M. TG repeat polymorphism at the D21S167 locus. Nucleic Acids Res 1990; 18:4967. [PMID: 2395673 PMCID: PMC332041 DOI: 10.1093/nar/18.16.4967-a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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860
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Terness P, Süsal C, Guo Z, Opelz G. Fc-dependent suppression of in vitro B-cell response by IgG of alloimmunized rats. Transplant Proc 1990; 22:1957-9. [PMID: 2389495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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861
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Süsal C, Guo Z, Terness P, Padányi A, Petrányi G, Opelz G. Induction of anti-F(ab)2 gamma antibodies by buffy coat transfusions and their effect in kidney transplantation. Transplant Proc 1990; 22:1893-4. [PMID: 2389476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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862
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Wang S, Liu X, Lu Y, Guo Z, Jia X, Zhou Y. [Experimental study of anti-injurous effect of Cynanchum auriculatum Royle ex Wight on ozonic toxicity]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1990; 15:431-3, 448. [PMID: 2261078] [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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863
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Wu Z, Guo Z. [Relation of cytochemistry changes in the peripheral blood ANAE in chronic glomerulonephritis and differentiation-syndromes]. ZHONG XI YI JIE HE ZA ZHI = CHINESE JOURNAL OF MODERN DEVELOPMENTS IN TRADITIONAL MEDICINE 1990; 10:399-401, 387-8. [PMID: 2208417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The ANAE reaction of the peripheral blood from 24 patients of chronic glomerulonephritis (grouped according to the identification of TCM) and 30 normal individuals were observed by cytochemistry and microspectrophotometry. It was found that the percentages of positive lymphocytes of the deficiency of Kidney-Yin was 47.8 +/- 7.6%, among which the percentages of lymphocytes of spot granular pattern and scattered granular pattern were 42.4 +/- 6.3% and 5.4 +/- 2.2% respectively, the ANAE relative quality of monocytes of the deficiency of Kidney-Yin was 51.26 +/- 2.59. They were 39.7 +/- 7.4%, 31.2 +/- 5.8%, 8.5 +/- 2.7% and 41.84 +/- 2.66 respectively in the deficiency of Kidney-Yang. The results of normal group were 65.5 +/- 6.8%, 53.6 +/- 6.7%, 11.9 +/- 3.4% and 54.78 +/- 3.34 in their given order. The differences in three groups each other were marked significantly. The authors have found the difference between the patients of chronic glomerulonephritis and the normal individuals was significant statistically.
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864
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Luty JA, Guo Z, Willard HF, Ledbetter DH, Ledbetter S, Litt M. Five polymorphic microsatellite VNTRs on the human X chromosome. Am J Hum Genet 1990; 46:776-83. [PMID: 2316523 PMCID: PMC1683648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The human genome contains approximately 50,000 copies of an interspersed repeat with the sequence (dT.dG/dA.dC)n, where n = approximately 10-60. We and others have found that several of these repeats have variable lengths in different individuals, with allelic fragments varying in size by multiples of 2 bp. These "microsatellite" variable number of tandem repeats (VNTRs) may be scored by PCR, using unique flanking primers to amplify the repeat-containing regions and resolving the products on DNA sequencing gels. Since few VNTRs have been found on the X chromosome, we screened a flow-sorted X chromosome-specific genomic library for microsatellites. Approximately 25% of the phage clones hybridized to a poly (dT-dG).poly(dA-dC) probe. Of seven X-linked microsatellites present in positive phages, five are polymorphic and three have both eight or more alleles and heterozygosities exceeding 75%. Using PCR to amplify genomic DNAs from hybrid cell panels, we confirmed the X localization of these VNTRs and regionally mapped four of them. The fifth VNTR was regionally mapped by virtue of its tight linkage to DXS87 in Centre du Polymorphisme Humain families. We conclude that whatever factors limit the occurrence of "classical" VNTRs and RFLPs on the X chromosome do not appear to operate in the case of microsatellite VNTRs.
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865
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Guo Z. [Plasma atrial natriuretic peptide levels and their clinical importance in infant with pneumonia associated with congestive heart failure]. ZHONGHUA YI XUE ZA ZHI 1990; 70:130-2, 10. [PMID: 2163735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Plasma atrial natriuretic peptide (ANP) Levels were measured by radioimmunoassay both in 38 infants with pneumonia and 20 infants with pneumonia associated with congestive heart failure (CHF). 10 of the 20 infants with CHF were examined with echocardiography during CHF and recovery period. The plasma ANP Levels in the pneumonia group was 424.3 +/- 214.4 pg/ml (mean +/- SD). Which was significantly higher than that of the control group (P less than 0.01). The plasma ANP levels in pneumonia with CHF group was 684.4 +/- 366.9 pg/ml, which was significantly higher than that in the group of pneumonia without CHF (P less than 0.01). Positive linear correlation was found between the mean pulmonary artery pressure and plasma ANP content (r = 0.717, P less than 0.05). The results of this study suggest that plasma ANP concentration may give useful information on the indication of using vasodilators in infant with pneumonia. It may also be taken as a practical diagnostic indicator in pneumonia associated with CHF.
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866
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Conrad H, Guo Z, Sprecher A. Effects of electropulse duration and frequency on grain growth in cu. ACTA ACUST UNITED AC 1990. [DOI: 10.1016/0956-716x(90)90270-q] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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867
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Guo Z. Single-person households in China. CHINESE JOURNAL OF POPULATION SCIENCE 1990; 2:163-7. [PMID: 12284839] [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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868
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Guo Z, Gent J, Goodchild C. Intrathecal 5-hydroxytryptamine produces analgesia by activating spinal cord opioid pathways. Pain 1990. [DOI: 10.1016/0304-3959(90)92342-n] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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869
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Guo Q, Guo Z. [Treatment of ulcerative colitis by traditional Chinese medicine and dynamic study of immune functions]. ZHONG XI YI JIE HE ZA ZHI = CHINESE JOURNAL OF MODERN DEVELOPMENTS IN TRADITIONAL MEDICINE 1989; 9:472-4, 452. [PMID: 2598349] [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 the traditional Chinese medicinal herbs enema and enteric-coated capsules in the treatment of ulcerative colitis (UC) were compared in 260 cases. The immune complexes and the dynamic change of autoantibodies were monitored in 28 out of the 260 cases before and after treatment. The following results were observed. (1) There was no significant difference in the total effective rate between the enema group and the oral capsule group (93.3% and 87.5% respectively), but the recovery rates of purulent hemafecia, mucusfecia and erosion accompanying colitis, etc. in the former group were higher than those in the latter (P less than 0.01). (2) The circulating immune complexes were found 43 times above the normal range in 17 cases with positive rate 60.7%, and tended to decrease as the condition became better after treatment. Antinuclear antibodies were determined by the indirect fluorescent immune method and the indirect enzyme labelling method and the positive rates were 53.6% and 64.7% respectively, both being much higher than those in the controls (P less than 0.01).
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870
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Guo Z, Süsal C, Terness P, Gerhard I, Miedaner-Mayer I, Opelz G. Possible protective effect of IgG-anti-F(ab)2 antibodies in pregnancy. J Reprod Immunol 1989. [DOI: 10.1016/0165-0378(89)90301-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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871
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Guo Z. Several problems about the study of family households. POPULATION RESEARCH (PEKING, CHINA) 1988; 5:29-33, 13. [PMID: 12281753] [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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872
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Guo Z, Arfman N, Ong E, Gilkes N, Kilburn D, Warren R, Miller R. Leakage ofCellulomonas fimicellulases fromEscherichia coli. FEMS Microbiol Lett 1988. [DOI: 10.1111/j.1574-6968.1988.tb02730.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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873
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Kamens RM, Guo Z, Fulcher JN, Bell DA. The influence of humidity, sunlight, and temperature on the daytime decay of polyaromatic hydrocarbons on atmospheric soot particles. ENVIRONMENTAL SCIENCE & TECHNOLOGY 1988; 22:103-8. [PMID: 22195517 DOI: 10.1021/es00166a012] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
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874
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Guo Z, Xu RB, Dong RC. [Determination of half-life and characterization of the glucocorticoid receptor of isolated splenic cells in mice]. SHI YAN SHENG WU XUE BAO 1986; 19:321-5. [PMID: 3577548] [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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875
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Guo Z, Xu RB, Dong RC. [The half-life of glucocorticoid receptor in SMMC-7721 human hepatoma cell line]. SHI YAN SHENG WU XUE BAO 1985; 18:471-5. [PMID: 3017028] [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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