3126
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Xu J, Whong WZ, Ong T. Validation of the Salmonella (SV50)/arabinose-resistant forward mutation assay system with 26 compounds. Mutat Res 1984; 130:79-86. [PMID: 6371504 DOI: 10.1016/0165-1161(84)90107-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Mutagenic sensitivity of the Salmonella/arabinose-resistant (Arar) assay system using the tester strain SV50 was evaluated with 26 compounds both by the preincubation and the standard plate incorporation tests. The mutagenic activity of all 26 compounds was also tested with TA98 and/or TA100 of the Ames Salmonella/microsome assay system. The results indicate that 13 and 10 of 26 compounds were mutagenic and nonmutagenic, respectively, in both assay systems. PR toxin and hydrogen peroxide were mutagenic only in the Arar assay, while 2-nitrofluorene was mutagenic only in the Ames assay. The results also show that the mutagenic response of SV50 to 13 of 15 mutagenic compounds was much higher (2.1-154-fold) if the compounds were tested with the preincubation rather than the plate incorporation test. The mutagenic activity of 4 compounds (diethyl sulfate, niridazole, PR toxin and hydrogen peroxide) in the Arar assay was detected only with the preincubation test. Since the Arar assay using tester strain SV50 has similar mutagenic sensitivity as the Ames assay to chemicals with different modes of action and since it requires only one tester strain, we find this assay system to be useful for screening environmental mutagens. Based on the effectiveness of the preincubation test in this study, it is recommended that the preincubation test instead of the plate incorporation test be used for the Arar assay system with tester strain SV50.
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3127
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Shimizu H, Xu J, Mao H, Bell P. High-pressure FT IR measurements of crystalline methylene chloride up to 120 kbar in the diamond anvil cell. Chem Phys Lett 1984. [DOI: 10.1016/0009-2614(84)85028-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3128
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Xu J, Jin GZ, Yu LP, Li JH, Yu AY. [Central antimuscarinic cholinergic effects of scopolamine and other cholinergic antagonists]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1983; 4:156-62. [PMID: 6228112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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3129
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Jin GZ, Xu J, Zhang FT, Yu LP, Li JH, Wang XL. [Relevance of the sedative-tranquilizing effect of l-tetrahydropalmatine to brain monoaminergic neurotransmitters]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1983; 4:4-10. [PMID: 6135292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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3130
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Xu J, Zheng LZ, Jin GZ. [Relevance of brain prostaglandins to central effects of l-tetrahydropalmatine]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1982; 3:217-20. [PMID: 6219534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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3131
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Li LY, Xia JH, Dai HP, He XX, Xu FM, Xu J, Xiao GH, He HE, Hu XD, Lu HL. Genetic Counseling Clinic chromosome analysis in 522 cases. Chin Med J (Engl) 1982; 95:793-804. [PMID: 6819917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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3132
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Cui M, Xu J, Zhou X. Comparative studies on spontaneous and mitomycin-C-induced sister-chromatid exchanges in smokers and non-smokers. Mutat Res 1982; 105:195-200. [PMID: 6815523 DOI: 10.1016/0165-7992(82)90011-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Both spontaneous and mitomycin-C-induced sister-chromatid exchanges were analyzed in 6 smokers and 6 non-smokers. The average number of spontaneous SCE in smokers' cells was 8.33 +/- 1.08. The frequency in the non-smoking controls was 4.41 +/- 0.72. This difference is highly significant (P less than 0.001). Smokers also had more SCE at all levels of mitomycin C testes. Analysis of variance showed these differences to be highly significant (P less than 0.001).
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3133
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Xia JH, Li LY, Dai HP, Hu SQ, He XX, Xu FM, Xu J, Xiao GH, Hu XD, Lu HL. Karyotype analysis in 2,079 consecutive liveborn infants. Chin Med J (Engl) 1982; 95:687-91. [PMID: 6817995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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3134
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Xu J. Mitosis of nerve cells in the cerebral cortex of adult rats. SCIENTIA SINICA. SERIES B, CHEMICAL, BIOLOGICAL, AGRICULTURAL, MEDICAL & EARTH SCIENCES 1982; 25:286-91. [PMID: 7100898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Adult rats 4-5 months old and 150-200g in body weight were used in this experiment. Lesions were made with antiseptic precaution by excising portions (0.7 x 0.4 x 0.1cm) of the cerebral cortices under ether anesthesia. The animals were sacrificed by decapitation at the time intervals ranging from 1 to 30 days after the operation. Specimens of the brain were removed from the lesions with their adjacent normal areas, and processed for histological and histochemical studies. Mitotic figures were observed in nerve cells adjacent to the lesions. The mitotic process of these neurons is similar to that of the other tissue cells, as it can also be divided into four stages--prophase, metaphase, anaphase and telophase. However, neurons are entirely different from the neuroglia and other tissue cells in that these have characteristic cell processes, i.e. axon and dendrites, while most of the neurons are pyramidal cells of layers II and V of the cerebral cortex. The other characteristic feature is that the dividing neuron contains Nissl bodies in the cytoplasm.
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3135
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Xu J, Jin GZ, Yu LP, Liu XJ. [Differentiation between catalepsies induced by l-tetrahydropalmatine and by haloperidol and morphine (author's transl)]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1981; 2:152-5. [PMID: 6462002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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3136
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Xu J, Ma Y, Wang XL, Wu XM, Yao C, Peng SZ, Zhang CG, Zeng FT. [Effect of Chinese remedy Kwei-Ling-Chi on immunity in mice (author's transl)]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1981; 3:119-22. [PMID: 6458405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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3137
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Xu J. [Clinical features of multiple-sclerosis---clinical analysis of 141 cases (author's transl)]. ZHONGHUA SHEN JING JING SHEN KE ZA ZHI = CHINESE JOURNAL OF NEUROLOGY AND PSYCHIATRY 1981; 13:105-8. [PMID: 7307761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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3138
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Jin GZ, Lin XJ, Yu LP, Xu J. [Serotoninergic implication l-tetrahydropalmatine-induced catalepsy in rats (author's transl)]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1980; 1:12-7. [PMID: 6175169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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3139
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Han J, Re M, Tang J, Fan S, Xu J, Guan X. The role of central catecholamine in acupuncture analgesia. Chin Med J (Engl) 1979; 92:793-800. [PMID: 116824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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3140
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Xu XY, Li Y, Xu J. [A modified humoral immune assay method--a method of hemolysin determination (author's transl)]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1979; 14:443-6. [PMID: 93846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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3141
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Luo Z, Yu S, Zhu Y, Zhang J, Xu W, Xu J. Effect of various levels of isoflavone aglycone-enriched fermented soybean meal on redox status, serum hormones and milk quality in ewes. S AFR J ANIM SCI 1970. [DOI: 10.4314/sajas.v48i4.9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The study investigated the effects of various levels of isoflavone aglycone-enriched fermented soybean meal (FSBM) on the redox status, serum hormones and milk quality of ewes from late pregnancy to early lactation. Twenty Chongming White ewes were chosen and divided into four treatment groups (n = 5): basal diet without FSBM (CON); basal diet with 2% (FSBM2); 4% (FSBM4); and 6% FSBM (FSBM6) replacing equal amounts of soybean meal (SBM). At parturition, maternal serum, the placenta and colostrum were collected. At day 21 of lactation, maternal serum and milk were collected. Results showed that, compared with CON, feeding ewes with FSBM6 reduced the concentrations of hydrogen peroxide (H2O2) and 8-hydroxy-2-deoxyguanosine (8-OHdG), and increased the activity of superoxide dismutase (SOD) and total antioxidant capacity (T-AOC) concentration in the placenta. At parturition and day 21 of lactation, the serum SOD activity and T-AOC concentration in FSBM4 and FSBM6 were higher than those in CON. Furthermore, the concentration of serum 8-iso prostaglandin (8-ISO-PGF2α) was markedly lower in FSBM6 than in CON. Serum prolactin (PRL), insulin-like growth factor 1 (IGF-1) and epidermal growth factor (EGF) concentrations were increased in FSBM4 and FSBM6 compared with CON. PRL concentration was increased in FSBM2. FSBM4 increased the levels of fat, protein, lactose, IgA, IgG and IgM in colostrum and milk. In conclusion, feeding ewes with FSBM from late pregnancy to early lactation seemed to increase maternal and placental anti-oxidative capacity, and improve serum hormones and milk quality. Considered overall, the level of 4% supplementation is recommended.Keywords: Milk contents, oxidative stress, placenta, serum parameters
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