2101
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Xu ZY, Blot WJ, Xiao HP, Wu A, Feng YP, Stone BJ, Sun J, Ershow AG, Henderson BE, Fraumeni JF. Smoking, air pollution, and the high rates of lung cancer in Shenyang, China. J Natl Cancer Inst 1989; 81:1800-6. [PMID: 2555531 DOI: 10.1093/jnci/81.23.1800] [Citation(s) in RCA: 127] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
A case-control study involving interviews with 1,249 patients with lung cancer and 1,345 population-based controls was conducted in Shenyang, an industrial city in northeastern China, where mortality rates are high among men and women. Cigarette smoking was found to be the principal cause of lung cancer in this population, accounting for 55% of the lung cancers in males and 37% in females. The attributable risk percentage among females is high compared to elsewhere in China, largely because of a higher prevalence of smoking among women. After adjustment for smoking, there were also significant increases in lung cancer risk associated with several measures of exposure to air pollutants. Risks were twice as high among those who reported smoky outdoor environments, and increased in proportion to years of sleeping on beds heated by coal-burning stoves (kang), and to an overall index of indoor air pollution. Threefold increases in lung cancer risk were found among men who worked in the nonferrous smelting industry, where heavy exposures to inorganic arsenic have been reported. The associations with both smoking and indoor air pollution were stronger for squamous cell and small cell carcinomas than for adenocarcinoma of the lung. Risks due to smoking or air pollution were not greatly altered by adjustment for consumption of fresh vegetables or sources of beta carotene or retinol, prior chronic lung diseases, or education level. The findings suggest that smoking and environmental pollution combine to account for the elevated rates of lung cancer mortality in Shenyang.
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2102
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Lin XY, Wang Y, Sun J, Wang FQ, Ni LQ, Chang LY, Chen SS. Association of RFLP of HLA class I genes with Chinese ankylosing spondylitis patients. TISSUE ANTIGENS 1989; 34:279-83. [PMID: 2576476 DOI: 10.1111/j.1399-0039.1989.tb01743.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: 01/01/2023]
Abstract
By serum typing, it is indicated that HLA B27 may be associated with the susceptibility to ankylosing spondylitis (AS). We analyzed DNA restriction fragment length polymorphism (RFLP) in 28 Chinese AS patients and 99 healthy controls, using a 1.4 Kb HLA class I cDNA probe. The results showed that the frequencies of the 8.1 Kb EcoRI, 5.2 Kb EcoRI and 21.9 Kb XbaI fragments were found to be significantly increased in affected patients (P less than 0.0001, P = 0.0015, respectively), but that of 19.2 Kb XbaI fragment was decreased (P = 0.0021). The data suggest that AS may be a polygenic disease; furthermore, B27 and 8.1 Kb EcoRI band may be two different factors responsible for the susceptibility or just in linkage disequilibrium with the susceptible gene(s).
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2103
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Sun J. Localization in the Soukoulis-Economou model of one-dimensional incommensurate systems. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:8270-8274. [PMID: 9991283 DOI: 10.1103/physrevb.40.8270] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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2104
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Sun J, Herzer PJ, Weinstein MP, Lampson BC, Inouye M, Inouye S. Extensive diversity of branched-RNA-linked multicopy single-stranded DNAs in clinical strains of Escherichia coli. Proc Natl Acad Sci U S A 1989; 86:7208-12. [PMID: 2476815 PMCID: PMC298026 DOI: 10.1073/pnas.86.18.7208] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Recently it was shown that a clinical strain of Escherichia coli contains a reverse transcriptase that is essential for the synthesis of a branched-RNA-linked multicopy single-stranded DNA (msDNA). We now have examined 113 independent clinical isolates of E. coli for the existence of msDNA and found that 7 strains contained msDNA. Four of them were further analyzed by hybridization analysis, which indicated that three of the msDNAs were different, having little sequence homology. When the reverse transcriptase gene associated with one of these msDNAs was used as a probe, it did not hybridize with chromosomal DNA from the other strains containing msDNA. These results indicate that some clinical E. coli strains carry their own unique msDNA-synthesizing systems; msDNAs produced by these systems have little, if any, sequence homology in their RNA and DNA molecules and the reverse transcriptases required for the production of msDNA also have little sequence similarity. Such extensive diversity of the msDNA-synthesizing systems supports the notion that they were acquired by the E. coli genome late during the evolution of E. coli.
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2105
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Misra SK, Sun J, Jerzak S. Mn2+ EPR study of the phase transition in an ammonium sulfate single crystal: Existence of two inequivalent sublattices. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:74-83. [PMID: 9990885 DOI: 10.1103/physrevb.40.74] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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2106
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Farias LA, Sun J, Markov AK. Improved brain metabolism with fructose 1-6 diphosphate during insulin-induced hypoglycemic coma. Am J Med Sci 1989; 297:294-9. [PMID: 2719056 DOI: 10.1097/00000441-198905000-00005] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The effect of fructose 1-6 diphosphate (FDP) on brain metabolism and brain function was investigated in hypoglycemic rabbits. The electroencephalogram and differences in oxygen content of arterial and cerebral venous blood were used as indicators for brain metabolic activity. Hypoglycemic coma was induced and maintained for 1 hour by insulin administration. At the onset of isoelectric EEG, six rabbits were treated with FDP and five rabbits received 0.9% saline. The animals were killed by an overdose of barbiturate 60 minutes after hypoglycemic recovery with glucose. FDP-treated rabbits had lower arterial glucose concentration after 40 minutes of treatment (p less than .05) and a significantly greater difference between the oxygen content of arterial and venous blood after 40 minutes (p less than .01), and after 60 minutes (p less than .025) of FDP infusion than saline-treated rabbits. FDP-treated rabbits also had a lower cerebral glucose-oxygen index than did saline-treated rabbits (p less than .005, after 20 and 40 minutes of FDP infusion). FDP administration was followed by a return of EEG activity during hypoglycemia, whereas saline produced no such effect. After glucose infusion, EEG activity was improved in FDP-treated rabbits; in saline-treated rabbits, minimal or no EEG activity was observed. The data suggest the possibility that, at the doses given in this study, FDP is taken up and used as a metabolic substrate by the brain.
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2107
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Abstract
In a recent study by Bentz, J., D. Alford, J. Cohen, and N. Düzgünes (1988. Biophys. J. 53:593-607), La3+ was found to be more effective than Ca2+ in causing nonleaky fusion of phosphatidylserine vesicles. It was proposed that this difference in fusion efficiency may be due, in part, to a difference in coordination of the two cations. That is, Ca2+ was presumed to bind to the lipid phosphate, whereas La3+ was proposed to be coordinated by the serine carboxylate and amine. 31P and 13C NMR results presented here demonstrate that the lanthanides, Tb3+ and La3+, are coordinated by the phosphodiester and carboxylate moieties of phosphatidylserine. Tb3+-Phosphatidylserine optical experiments suggest that the serine amine does not coordinate the lanthanide below pH 10, at least not while the membrane has a net negative surface charge. Although these observations disagree with the structural details proposed by Bentz et al. (1988), they are not in conflict with their general fusion mechanism. The work presented here also demonstrates that La3+ affects the inner surface phosphodiesters differently than those on the outer surface of phosphatidylserine vesicles. The vesicles studied are of an intermediate size, having diameters on the order of 150-200 nm. The cation appears to have a more immediate effect on the packing of the crowded headgroups on the inner surface. Higher levels of bound La3+ on the outer surface may be required to induce the same changes in headgroup conformation.
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2108
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Lai Z, Conrad H, Chao Y, Wang S, Sun J. Effect of electropulsing on the microstructure and properties of iron-based amorphous alloys. ACTA ACUST UNITED AC 1989. [DOI: 10.1016/0036-9748(89)90372-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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2109
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Lampson BC, Sun J, Hsu MY, Vallejo-Ramirez J, Inouye S, Inouye M. Reverse transcriptase in a clinical strain of Escherichia coli: production of branched RNA-linked msDNA. Science 1989; 243:1033-8. [PMID: 2466332 DOI: 10.1126/science.2466332] [Citation(s) in RCA: 92] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Branched RNA-linked multicopy single-stranded DNA (msDNA) originally detected in myxobacteria has now been found in a clinical isolate of Escherichia coli. Although lacking homology in the primary structure, the E. coli msDNA is similar in secondary structure to the myxobacterial msDNA's, including the 2',5'-phosphodiester linkage between RNA and DNA. A chromosomal DNA fragment responsible for the production of msDNA was cloned in an E. coli K12 strain; its DNA sequence revealed an open reading frame (ORF) of 586 amino acid residues. The ORF shows sequence similarity with retroviral reverse transcriptases and ribonuclease H. Disruption of the ORF blocked msDNA production, indicating that this gene is essential for msDNA synthesis.
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MESH Headings
- Amino Acid Sequence
- Base Sequence
- Cloning, Molecular
- DNA Probes
- DNA Restriction Enzymes
- DNA, Bacterial/genetics
- DNA, Single-Stranded/analysis
- DNA, Single-Stranded/biosynthesis
- DNA, Single-Stranded/genetics
- Endoribonucleases/genetics
- Escherichia coli/enzymology
- Escherichia coli/genetics
- Genes, Bacterial
- HIV/enzymology
- HIV/genetics
- Human T-lymphotropic virus 1/enzymology
- Human T-lymphotropic virus 1/genetics
- Molecular Sequence Data
- Myxococcales/genetics
- Nucleic Acid Hybridization
- RNA, Bacterial/analysis
- RNA, Bacterial/biosynthesis
- RNA, Bacterial/genetics
- RNA-Directed DNA Polymerase/genetics
- Retroviridae/enzymology
- Retroviridae/genetics
- Ribonuclease H
- Sequence Homology, Nucleic Acid
- Transformation, Bacterial
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2110
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He F, Wang S, Liu L, Chen S, Zhang Z, Sun J. Clinical manifestations and diagnosis of acute pyrethroid poisoning. Arch Toxicol 1989; 63:54-8. [PMID: 2742502 DOI: 10.1007/bf00334635] [Citation(s) in RCA: 139] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This article reviews 573 cases of acute pyrethroid poisoning reported in the Chinese medical literatures during 1983-1988. There were 325 cases of acute deltamethrin poisoning (occupational 158, accidental 167), 196 patients of acute fenvalerate poisoning (occupational 63, accidental 133, including 2 cases of ingestive fenvalerate-organophosphate mixture poisoning), 45 cases of acute cypermethrin poisoning (occupational 6, accidental 39) and 7 cases of other pyrethroid poisoning (occupational 2, accidental 5). The clinical manifestations have been reviewed and analysed. The diagnosis, gradation and differential diagnosis of occupational acute pyrethroid poisoning have been discussed.
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2111
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He F, Sun J, Han K, Wu Y, Yao P, Wang S, Liu L. Effects of pyrethroid insecticides on subjects engaged in packaging pyrethroids. BRITISH JOURNAL OF INDUSTRIAL MEDICINE 1988; 45:548-51. [PMID: 3415921 PMCID: PMC1009649 DOI: 10.1136/oem.45.8.548] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
A health survey was conducted on 199 workers engaged in dividing and packaging pyrethroids. The subjects were exposed to fenvalerate at 0.012-0.055 mg/m3 and deltamethrin at 0.005-0.012 mg/m3 in the air with simultaneous skin contact for 0.5-4.5 months. Burning sensations and tightness or numbness on the face appeared in two thirds of the subjects and one third had sniffs and sneezes. Abnormal facial sensations, dizziness, fatigue, and miliary red papules on the skin were more evident in summer than in winter. Neither abnormalities in other organs or systems nor symptoms or signs of acute pyrethroid poisoning were found by interviews, examinations, and laboratory tests. There was no significant difference in plasma levels of NA, cAMP, and cGMP between the examined subjects and the control group. The urine concentration of fenvalerate in the study group ranged from 1.02 to 18.6 micrograms/l; deltamethrin in the urine was present in trace amounts.
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2112
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Wu BQ, Fang WG, Zheng J, Sun YK, Wang JL, Zhao XS, Yang JS, Lu CP, Sun J, Xu QM. [In vivo metastasis of human tumor transplant in T and NK cell immune-deficient mice]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1988; 10:1-3. [PMID: 3262047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Beige-nude mice with combined T and NK cell deficiency were produced by introducing "nu" gene into the beige mice of C57BL/6 background. The beige-nude mice were characterized by morphological features, level and activity of the NK cell in spleen and peripheral blood. NK cell level of the beige-nude mice was higher than the beige mice and similar to the ordinary nude mice though its NK cell activity was markedly lower than the nude mice. Human lung adenocarcinoma (PAa) was transplanted subcutaneously to the beige-nude mice and nude mice of BALB/cA background. No metastasis was found in BALB/cA nude mice (0/7), while in beige-nude mice, spontaneous lymph node metastasis rate was 36.3% (4/11). It should be noted that the transplanted PAa metastasized to lungs, which had never been seen in BALB/cA nude mice in previous experiments. The increase of metastatic rate is correlated with the relative low NK cell activity of the beige-nude mice. Our observation is that the beige-nude mice could be a suitable experimental model for in vivo study on metastatic behavior of the human tumors.
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2113
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Sun BL, Xu JY, Zhao R, Sun J, Hou GY. The effect of orally administered pingle jiegudan on fracture healing: an experimental study. J TRADIT CHIN MED 1987; 7:280-6. [PMID: 3449711] [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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2114
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Ao P, Yu SY, Zhao M, Sun J. [Different effects of selenium on proliferation of human lung adenocarcinoma cells and human embryonic lung diploid cells in vitro]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1987; 9:408-11, 22. [PMID: 3452535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
After treating human lung adenocarcinoma cells by Na2SeO3 (1 microgram/ml) for 24 hours, its mitotic index decreased by 50%. The reduction rate was directly proportional to selenite concentration (1-5 micrograms/ml). In the meantime, the labelling index, growth rate and progression of the cell cycle were also inhibited. In contrast to the above observation, there was no marked change in the cell count, mitotic index, labelling index and the average silver granule number in the human embryonic lung diploid cells treated by Na2SeO3 (1-5 micrograms/ml) for 1-3 days. When human embryonic lung diploid cells were mix-cultured with human lung adenocarcinoma cells in the presence of 5 micrograms/ml Na2SeO3 for 24 hours, the former maintained a normal morphology, while the lung cancer cells showed heavily vacuolated cytoplasms and distorted nuclei.
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2115
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Yang H, Sun J. [Effect of hydrogen ion regurgitation and gastric mucosa ischemia on the pathogenesis of stress ulcer]. SHENG LI KE XUE JIN ZHAN [PROGRESS IN PHYSIOLOGY] 1987; 18:260-2. [PMID: 3313714] [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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2116
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Wu DL, Jiang MY, Zhang LM, Sun J, Chen Q. [Metabolism of 125I-superoxide dismutase in mice]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1987; 8:281-4. [PMID: 2959030] [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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2117
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Sun J, Kyotani T, Tomita A. Preparation and characterization of lanthanum carbonate hydroxide. J SOLID STATE CHEM 1986. [DOI: 10.1016/0022-4596(86)90093-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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2118
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Sun J, Kyotani T, Tomita A. Preparation and characterization of lanthanum hydroxide bromide hydrates. J SOLID STATE CHEM 1986. [DOI: 10.1016/0022-4596(86)90139-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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2119
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Wu DL, Zhang LM, Sun J, Chen Q, Wu NH, Gao ZF, Mao QW. [Absorption and distribution of 125I-modified snake neurotoxin in rats]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1986; 7:300-2. [PMID: 2954386] [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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2120
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An XC, Zhao HS, Li XC, Tang YY, Sun J, Liu J, Yi JQ, Yu YX, Zhang GC, Hao G. Acupuncture treatment for disturbances in urination and defecation from sacral cryptorachischisis--a clinical observation of 254 cases. J TRADIT CHIN MED 1986; 6:95-8. [PMID: 3534473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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2121
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Sun J, Li R. The development of China's population statistics. POPULATION RESEARCH (PEKING, CHINA) 1986; 3:23-7. [PMID: 12268650] [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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2122
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Chen DY, Sun J. [Rokitansky-Kuster-Hauser syndrome: clinic analysis of 40 cases]. ZHONGHUA FU CHAN KE ZA ZHI 1985; 20:220-2, 253-4. [PMID: 4053782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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2123
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Tsay YG, Jones R, Calenoff E, Sun J, Arndt L, Crispin B, McDermott D, Stern I. Chymopapain-induced hypersensitivity following chemonucleolysis. Spine (Phila Pa 1976) 1984; 9:769-71. [PMID: 6390723 DOI: 10.1097/00007632-198410000-00021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
This study describes the changes in chymopapain-specific IgE antibody levels in patients following chemonucleolysis with Chymodiactin. Using the ChymoFAST method, chymopapain-specific IgE values were studied in 91 patients prior to and for 2 months post-Chymodiactin chemonucleolysis. A total of 8.8% (17/91) developed IgE levels greater than or equal to 0.06 IU/ml. Those patients with detectable IgE levels prior to chemonucleolysis were more likely than those with nondetectable preinjection levels (36.4% versus 4%) to develop chymopapain-specific IgE levels greater than or equal to 0.06 IU/ml.
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2124
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Tsay YG, Jones R, Calenoff E, Sun J, Arndt L, Crispin B, Rock H. A preoperative chymopapain sensitivity test for chemonucleolysis candidates. Spine (Phila Pa 1976) 1984; 9:764-8. [PMID: 6390722 DOI: 10.1097/00007632-198410000-00020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A fluorescence enzyme immunoassay (ChymoFAST test) for the quantitation of chymopapain-specific IgE antibody concentration in human serum is described. The IgE antibody is recognized as the major immunologic mediator for anaphylactic reactions. Serum chymopapain-specific IgE levels serve as an objective screening method for identifying patients most likely to tolerate chymopapain, thereby minimizing associated risks. Preoperative sera obtained from 11,658 chemonucleolysis candidates were tested, of which 0.94% (110/11,658) were found to be positive. Good predictive values for both positive and negative findings are evident based on 4776 postmarketing surveillances obtained from the surgeons.
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2125
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Shen A, Qi X, Sun J. [Some problems observed in the 1 percent sample survey of fertility in Shanghai]. REN KOU YAN JIU = RENKOU YANJIU 1984:47-9. [PMID: 12159397] [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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2126
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Sun J. [Problems concerning population distribution in China]. REN KOU YAN JIU = RENKOU YANJIU 1982:10-1. [PMID: 12312829] [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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2127
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Pohorecky LA, Newman B, Sun J, Bailey WH. Acute and chronic ethanol ingestion and serotonin metabolism in rat brain. J Pharmacol Exp Ther 1978; 204:424-32. [PMID: 563906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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