3276
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Xu Y, Qiu XF, Xue JL, Zhou JM, Xu YL. Establishment of a human/Chinese hamster hybrid clone panel. SCIENTIA SINICA. SERIES B, CHEMICAL, BIOLOGICAL, AGRICULTURAL, MEDICAL & EARTH SCIENCES 1987; 30:630-7. [PMID: 3313724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Combined with the chromosome G-banding, followed by Giemsa-11 techniques and chromosomal marker isozyme analysis, 6 out of 200 subclones have been analyzed in detail. A primary hybrid clone panel has been established, which can be used to map genes on chromosomes 4, 5, 8, 12, 20 and 22. Since the panel contains deleted chromosomes 4, 5, 8 and 12, genes on these chromosomes can be mapped regionally.
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3277
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Abstract
A new alkaloid, N-allylnorgalanthamine ( 1), was isolated from the bulbs of LYCORIS GUANGXIENSIS Y. Hsu et Q. J. Fan (Amaryllidaceae). Additionally, seven known alkaloids, lycorine, narwedine, galanthamine, lycoramine, crinine, norgalanthamine, and pseudolycorine were also obtained. The structure of 1 was established through the interpretation of spectral data.
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3278
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Xu Y, Salerno JC, Wei YH, King TE. Stabilized ubisemiquinone in reconstituted succinate ubiquinone reductase. Biochem Biophys Res Commun 1987; 144:315-22. [PMID: 3034247 DOI: 10.1016/s0006-291x(87)80512-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
QP-S, a ubiquinone (Q) protein, accepts electrons from succinate through succinate dehydrogenase (SDH). A new method has produced a preparation of QP-S which has a different amino acid composition and SDS gel electrophoretic pattern from that of the old preparation (Biochemistry 19, 3579-3585 (1980)). The new preparation contains less than 1 nmol heme/mg protein; the activity of the preparation was not proportional to its heme content. A thenoyltrifluoroacetone sensitive free radical signal was detected by EPR spectroscopy in succinate-Q reductase reconstituted from this QP-S and SDH; the characteristics of this species identify it as ubisemiquinone. At pH 7.4, the Em of the two electron step was about 70 mV with E1 = 5 mV and E2 = 125 mV. The properties of the radical differed slightly from those of "Qs" radical in more intact preparations (e.g. submitochondrial particles). The present is the simplest system in which such a succinate reducible ubisemiquinone free radical has been demonstrated.
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3279
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Zhang XG, Xu Y, Qian SZ. Injection of copper powder into epididymides via vas deferens on male fertility. ADVANCES IN CONTRACEPTIVE DELIVERY SYSTEMS : CDS 1987; 3:167-71. [PMID: 12268654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
In adult SD rats, a single injection of silicon rubber containing 10mg metallic copper particles via vas deferens into each cauda epididymis could induce male infertility. Although the copper contact in the cauda epididymides of treated rats was significantly higher than that in the controls, the serum copper concentration did not rise significantly, while the histology of important organs and blood testosterone levels did not change. Treated animals gained weight as fast as the controls, suggesting a low systemic toxicity of this procedure. In 5 of the 8 treated rats, fertility was restored 16 weeks after treatment with normal testicular copper concentration and testicular histology. In 3, fertility was not restored within 16 weeks and the testicular copper concentration was significantly higher than in the controls. Only in these 3 rats were different degrees of damage noted in the seminiferous epithelium and it is anticipated that the fertility will be restored after a certain period of time since sperm production was unaffected. The delayed recovery of fertility in these rats is attributed to the diffusion of copper ions into the testis. It would appear that the injection of silicon rubber containing copper particles via the vas deferens to the cauda epididymides is a potential approach for male contraception.
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3280
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Liu YH, Tian JS, Xu Y, Xue SP. [Establishment of human promyelocytic leukemia cell mutant (HL-60-AR) with characteristics of resistance to 8-AG and deficiency in HGPRT]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1986; 8:456-60. [PMID: 2954674] [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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3281
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Xue SP, Zhang JB, Yuan J, Xu Y, Cai YY, Wang ZQ, Liu YH, Li LJ, Hu X. [Studies on the regulatory effect of rabbit reticulocyte cytoplasmic factors on the malignancy of mouse myeloma cells]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1986; 8:339-46. [PMID: 2952304] [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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3282
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Lee P, Lieber AJ, Pradhan AK, Xu Y. Time-resolved measurements of nonthermal x-ray emission of Ti. PHYSICAL REVIEW. A, GENERAL PHYSICS 1986; 34:3210-3216. [PMID: 9897639 DOI: 10.1103/physreva.34.3210] [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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3283
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Xu Y, Zhang SF, Hu X, Xue SP. [Analysis of the effect of gossypol on the activity of purified LDH-X]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1986; 8:362-5. [PMID: 2952308] [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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3284
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Kage M, Kage M, Liew CT, Xu Y, Peters RL. Alpha-1-antitrypsin deficiency in adults. ACTA PATHOLOGICA JAPONICA 1986; 36:1139-48. [PMID: 3490736 DOI: 10.1111/j.1440-1827.1986.tb02835.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A clinicopathological examination was carried out on eight adult patients with alpha-1-antitrypsin (ATT) deficiency. Phenotyping confirmed five patients with PiMZ, two patients with PiZ-, and one patient with PiZZ. Cirrhosis was found in six of the patients, four of whom had a history of excessive ethanol consumption. Hepatitis B surface antigen was positive in two patients with cirrhosis. Dysplastic change was present in four patients, although no neoplasia in the liver was found in all patients. All patients had periodic acid-Schiff positive and diastase resistant inclusions of hepatocytes, which were identified as ATT by indirect immunoperoxidase stain. The possibility of the combined effects of ATT inclusions and such harmful stimuli such as alcohol or viral hepatitis infection may render the hepatocytes more susceptible to damage, and may contribute to development of cirrhosis.
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3285
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Xu Y, Tian JS, Liu YH, Zhang JB, Hu X, Huang AM, Xue SP. [Detection of HGPRT gene products before and after hybridization of reticulocytes with myeloma cells]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1986; 8:199-203. [PMID: 2946458] [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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3286
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Abstract
Studies were undertaken to assess the effect of the total glycosides extracted from Tripterigium wilfordii Hook. f. (GTW), a ready-made Chinese herb medicine, on the fertility of both male and female rats. In male rats, GTW was given by gastric gavage at a dose of 10 mg/kg per day, 6 days a week for 8 weeks. All the treated animals became infertile. The body weight growth was normal and the mating behavior was present. There was a drastic decrease in the viability of the epididymal spermatozoa, while the decrease in the sperm density, though significant, was far less marked. Seminiferous tubular damage was minimal and no perceptible change was observed in the Leydig and the Sertoli cells. All other parameters examined, including the serum testosterone level and the histology of various organs, were normal. In female rats, GTW given orally at a dose of 50 mg/kg per day on days 1-4 or 7-9 of pregnancy did not significantly affect the fertility. It is thus concluded that non-toxic dose of GTW can cause infertility in male rats, the mechanism of which may involve and interference in the function of the epididymal and/or testicular spermatozoa; in female rats, the dose regimens employed do not have significant anti-implantation or early-pregnancy termination effect.
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3287
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Gu S, Xu Y. [Family planning: knowledge, attitude and practice of childbearing women in rural areas]. REN KOU YAN JIU = RENKOU YANJIU 1985:19-21. [PMID: 12159287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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3288
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Grace R, Barnes PD, Eisenstein RA, Franklin GB, Maher C, Rieder R, Seydoux J, Szymanski J, Wharton W, Bart S, Chrien RE, Pile P, Xu Y, Hackenburg R, Hungerford E, Bassalleck B, Barlett M, Milner EC, Stearns RL. Weak decay of 1 Lambda 2C and 1 Lambda 1B hypernuclei. PHYSICAL REVIEW LETTERS 1985; 55:1055-1058. [PMID: 10031716 DOI: 10.1103/physrevlett.55.1055] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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3289
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Xu Y, Xiao FL, Xu N, Qian SZ. Effect of intra-epididymal injection of copper particles on fertility, spermatogenesis, and tissue copper levels in rats. INTERNATIONAL JOURNAL OF ANDROLOGY 1985; 8:168-74. [PMID: 4018891 DOI: 10.1111/j.1365-2605.1985.tb00830.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
In male rats, a single injection of 10 mg metallic copper particles in oil into each caput epididymidis induced infertility, whilst leaving mating behaviour and blood testosterone levels unchanged. Fertility tended to recover 5.5 months after the copper treatment. Although the copper content of the caput epididymidis reached a level of around 100 times higher than control values, the serum copper concentration did not rise significantly. This finding and the observation that treated animals gained weight as fast as the controls suggest a low systemic toxicity of this method. The testicular copper concentration was significantly higher than that in controls and different degrees of damage, including vacuolation, karyorrhexis, pyknosis, and cytolysis, were seen mainly in pachytene spermatocytes and early spermatids. Clumps of foreign particles, apparently metallic copper, were found in the interstices of the caput epididymidis together with degenerative changes in the epithelial cells of the caput, suggesting a possible effect of copper on the epididymal epithelium. The viability of epididymal sperm decreased more markedly than the decrease in sperm density. It is therefore most likely that the major cause of infertility after copper injection into the caput epididymidis is a direct inhibitory effect of copper on the sperm, whilst damage to the seminiferous and epididymal epithelial may contribute.
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3290
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3291
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Zheng GJ, Ding YY, Xu Y, Qian SZ. [Effect of potassium deficiency on the magnesium metabolism of rats]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1984; 5:267-9. [PMID: 6242221] [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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3292
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Zheng GJ, Ding YY, Xu Y, Qian SZ. [Effect of potassium deficiency on magnesium metabolism of rats]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1984; 5:267-9. [PMID: 6240904] [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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3293
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Ito S, Xu Y, Keyser AJ, Peters RL. Histochemical demonstration of guanase in human liver with guanine in bicine buffer as substrate. THE HISTOCHEMICAL JOURNAL 1984; 16:489-99. [PMID: 6735738 DOI: 10.1007/bf01041349] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Histochemical studies of human guanase (guanine deaminase) have seldom been undertaken, in part because of technical difficulties which result in heavy background staining. In this report, we describe a modified procedure in which the methodological inadequacies have been overcome. The modified technique has been applied to determine the intracellular and lobular distribution of guanase in normal human liver and in cases of primary biliary cirrhosis and alcoholic cirrhosis. Guanase was present within the cytoplasm of hepatocytes throughout the entire lobule. Enzyme activity was stronger on the sinusoidal side of the hepatocytes and in the periportal area. The reaction was weaker in perivenular hepatocytes. Portal components (bile ducts and veins), fibrous tissue and inflammatory cells were non-reactive, and the enzyme was absent from hepatocyte nuclei and membranes. Sections of skeletal muscle contained no guanase. The specificity of the reaction was confirmed by control tests on liver tissue and by the use of a specific inhibitor of guanase. It is concluded that the modified procedure overcomes the disadvantages inherent in the original method for guanase demonstration, allows the examination of fine cellular detail and should become a valuable histochemical tool with which to study diseases of the liver.
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3294
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Xu Y, Li YH, Xu XY. [The comparative anatomy of Clerodendron trichotomum Thunb. and Clerodendron fragrans Vent]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1983; 18:973-5. [PMID: 6679181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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3295
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Xu Y, Vest CM, Murray JD. Holographic interferometry used to demonstrate a theory of pattern formation in animal coats. APPLIED OPTICS 1983; 22:3479-3483. [PMID: 18200220 DOI: 10.1364/ao.22.003479] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Time-average holographic interferometry has been used to observe modal patterns of acoustically excited thin plates and shells having shapes which are schematically related to shapes occurring in the coats of animals. These modal patterns are related by a reaction-diffusion model to animal coat markings found in nature.
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3296
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Xu Y. [Differential diagnosis of psychotic type of non-specific encephalitis--analysis of 100 cases]. ZHONGHUA SHEN JING JING SHEN KE ZA ZHI = CHINESE JOURNAL OF NEUROLOGY AND PSYCHIATRY 1983; 16:309-11. [PMID: 6675958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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3297
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Qian SZ, Xu Y, Wu SY. Antispermatogenic activity of gossypol in rats on low-potassium diet. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1983; 4:183-185. [PMID: 6228118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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3298
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Xu Y, Vest CM. Holographic technique for simultaneous measurement of displacement and tilt. APPLIED OPTICS 1983; 22:2137. [PMID: 18196095 DOI: 10.1364/ao.22.002137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
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3299
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Ye GC, Xu Y, Qian SZ, Jiang XJ, Sun WK, Tang XC. [Effect of a large dosage of PGE on spermatogenesis and tissue prostaglandin levels in rats]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1983; 18:406-10. [PMID: 6659939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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3300
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Xu Y, Wang WH, Qian SZ. [Antagonism of antifertility effect of gossypol by aspirin]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1983; 4:122-4. [PMID: 6225300] [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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