1751
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Lim CK, Li F, Rideout JM, Wright DJ, Peters TJ. Assaying erythrocyte haem biosynthetic enzyme activities by high-performance liquid chromatography with the advanced automated sample processor. J Chromatogr A 1986; 371:293-8. [PMID: 3558550 DOI: 10.1016/s0021-9673(01)94713-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The four cytosolic haem biosynthetic enzymes in erythrocytes were assayed with the Varian advanced automated sample processor (AASP) for rapid sample concentration and clean-up with fast and effective high-performance liquid chromatography systems for separation and quantitation. In the assay for 5-aminolaevulinic acid dehydrase, the porphobilinogen (PBG) formed was extracted on a C18 AASP cartridge and separated by reversed-phase ion-pair chromatography with 32% methanol in 0.05 M sodium acetate buffer (pH 3.5), containing 5.4 mM of 1-heptane-sulphonic acid as eluent. PBG was the substrate for the simultaneous assay of hydroxymethylbilane synthase and uroporphyrinogen III synthase. The uroporphyrinogen I and III isomers formed were oxidised to porphyrins, concentrated on a C2 or C8 cartridge, and separated by reversed-phase chromatography with 13% acetonitrile in 1 M ammonium acetate buffer (pH 5.16) as eluent. Uroporphyrinogen decarboxylase was estimated with pentacarboxylic porphyrinogen III as substrate. The coproporphyrinogen formed was extracted on a C2 or C8 cartridge, oxidised to coproporphyrin and separated by reversed-phase chromatography with 30% acetonitrile in 1 M ammonium acetate buffer (pH 5.16) as mobile phase.
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1752
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Harris P, Morton CC, Guglielmi P, Li F, Kelly K, Latt SA. Mapping by chromosome sorting of several gene probes, including c-myc, to the derivative chromosomes of a 3;8 translocation associated with familial renal cancer. CYTOMETRY 1986; 7:589-94. [PMID: 3536362 DOI: 10.1002/cyto.990070614] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
In eight members of a single family a constitutional translocation t(3;8) (p14.2;q24.1) is associated with the development of renal cancer. Chromosomes isolated from a cell line established from a subject with this translocation were analysed in flow with a fluorescence-activated cell sorter (FACS II). Nearly six million chromosomes from the flow karyotype region containing the der(8) and 5.5 million from the region containing the der(3) were sorted, the DNA extracted, digested with EcoRI, size fractionated by electrophoresis, and transferred to nitrocellulose. Hybridization with gene probes for c-mos, which has been localized to 8q11-q22 and somatostatin, which has been mapped to 3q28, confirmed that the sorted fractions contained, respectively, the der(8) and der(3) chromosomes. The cellular oncogenes c-raf-1 (3p25) and c-myc (8q24) were found to be translocated to the der(8) and der(3) chromosomes, respectively. The possible role that the relocation of c-myc might have on the development of renal carcinoma in carriers of this 3;8 translocation was further studied by analysis of the region surrounding the c-myc gene. By the use of cosmid cloning, no rearrangement 31 Kb 5'(or 19 Kb 3') of the translocated gene was found, indicating that the break-point is not immediately adjacent to c-myc. In an associated study, the DNA fragment D3S2 from chromosome 3 was found to map to 3p14.2-pter. This assignment in conjunction with published somatic cell hybrid data enabled D3S2 to be mapped more precisely to the interval 3p14.2-3p21.
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1753
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Li F, Zhang MZ, Lu LT. [Spontaneous rupture of the bladder: report of 9 cases]. ZHONGHUA WAI KE ZA ZHI [CHINESE JOURNAL OF SURGERY] 1986; 24:687-8, 701. [PMID: 3568885] [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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1754
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Li F, Lim CK, Peters TJ. A high-performance-liquid-chromatographic method for the assay of coproporphyrinogen oxidase activity in rat liver. Biochem J 1986; 239:481-4. [PMID: 3814086 PMCID: PMC1147306 DOI: 10.1042/bj2390481] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An h.p.l.c. method was developed for the assay of coproporphyrinogen oxidase activity in rat liver. The protoporphyrinogen IX formed is completely oxidized to protoporphyrin IX for separation and quantification by reversed-phase chromatography with mesoporphyrin as the internal standard. The Km of coproporphrinogen oxidase is 1.01 +/- 0.23 microM. The activities are 4.07 +/- 0.40 nmol of protoporphyrin IX/h per mg of mitochondrial protein and 224 +/- 19 nmol of protoporphyrin IX/h per g of liver tissue homogenate. The method is sensitive enough for measuring enzyme activity in small amounts of human tissue from needle biopsy.
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1755
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Turc-Carel C, Dal Cin P, Limon J, Li F, Sandberg AA. Translocation X;18 in synovial sarcoma. CANCER GENETICS AND CYTOGENETICS 1986; 23:93. [PMID: 3017544 DOI: 10.1016/0165-4608(86)90153-6] [Citation(s) in RCA: 125] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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1756
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Li F, Lim CK, Peters TJ. Analysis of urine and faecal porphyrins by HPLC coupled to an advanced automated sample processor. Biomed Chromatogr 1986; 1:93-4. [PMID: 3507215 DOI: 10.1002/bmc.1130010208] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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1757
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Lim CK, Li F, Peters TJ. High-performance liquid chromatography of uroporphyrinogen and coproporphyrinogen isomers with amperometric detection. Biochem J 1986; 234:629-33. [PMID: 3718489 PMCID: PMC1146618 DOI: 10.1042/bj2340629] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A reversed-phase h.p.l.c. system, with an ODS-Hypersil column with acetonitrile or methanol in ammonium acetate buffer as mobile phase, is described for the separation of uro-and copro-porphyrinogen isomers. The porphyrinogens are detected amperometrically with sensitivity comparable with that of the fluorescent detection of porphyrins. The effects of pH, buffer concentration and organic modifiers on retention and resolution were studied. The method is suitable for both analytical and preparative separation of porphyrinogens.
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1758
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Li F, Lim CK, Peters TJ. Reversed-phase high-performance liquid chromatography of conjugated and unconjugated bilirubins in body fluids. J Chromatogr A 1986; 353:19-26. [PMID: 3700514 DOI: 10.1016/s0021-9673(01)87072-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel high-performance liquid chromatography (HPLC) system is described for the separation of bilirubin and its conjugates in body fluids. Biliary bilirubin mono- and diglucuronide can be analysed directly on a C18 reversed-phase column with acetonitrile-dimethyl sulphoxide-0.1 M ammonium acetate (pH 5.16) (50:50:85, v/v/v) as mobile phase. However, the simultaneous determination of conjugated and unconjugated bilirubins in plasma required conversion of the conjugates into their methyl esters by alkaline methanolysis before HPLC separation of the C18 column eluted with acetonitrile-dimethyl sulphoxide-0.50 M ammonium acetate (pH 4.6) (50:50:40, v/v/v). The method is superior to, and more flexible than, previously described reversed-phase systems by allowing precise control of retention times by adjustment of pH, buffer concentration and the relative proportion of organic modifier in the mobile phase.
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1759
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Li F. [Seroepidemiological survey on dengue virus infection in various areas of Guangdong and Guangxi Provinces]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 1985; 6:330-2. [PMID: 3914373] [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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1760
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Yen YC, Kong LX, Lee L, Zhang YQ, Li F, Cai BJ, Gao SY. Characteristics of Crimean-Congo hemorrhagic fever virus (Xinjiang strain) in China. Am J Trop Med Hyg 1985; 34:1179-82. [PMID: 2422968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Virus strains isolated from blood of patients during a hemorrhagic fever outbreak in 1968 in southern Xinjiang, China, from Hyalomma asiaticum and from sheep, were found to be identical or closely related to Crimean-Congo hemorrhagic fever (C-CHF) virus by complement fixation and indirect immunofluorescence tests with convalescent sera of patients and with C-CHF reference antibody. The virus was inactivated by ether and acid. Viral synthesis was not suppressed by 5-iododeoxyuridine suggesting an RNA-containing genome. The buoyant density in sucrose was 1.16-1.18 g/cm3. The particle weight was estimated at 3.26 +/- 0.46 X 10(8). The diameter of the virus particles was 85-105 nm.
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1761
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1762
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Li F. [Carcinogenic action of chlordimeform give orally to mice in a lifetime experiment]. ZHONGHUA YU FANG YI XUE ZA ZHI [CHINESE JOURNAL OF PREVENTIVE MEDICINE] 1985; 19:154-6. [PMID: 4053830] [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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1763
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Jiang Y, Zhao ZC, Li F. [The relationship between daphnetin analgesia and central neurotransmitters of monoamines]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1984; 19:647-50. [PMID: 6152596] [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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1764
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Wang YL, Jin XP, Jiang XZ, Lin HF, Li F. Percutaneous absorption of radioactively labelled pesticides. A summary of 20 years' research. Chin Med J (Engl) 1984; 97:443-6. [PMID: 6437765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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1765
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Wei SL, Li F. [Application of diffuse reflectance spectra in studying the stability of solid drugs]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1983; 18:843-848. [PMID: 6679977] [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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1766
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Li DZ, Cao ZD, Gao XL, Li F. [Antagonistic action of ethylene-dimethyl sulfonate and its derivatives to human chorionic gonadotropin]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1983; 18:813-7. [PMID: 6093428] [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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1767
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Wu LS, Li F. [Side effects on the nervous system caused by nithiocyamine. Clinical observation of 47 cases]. ZHONGHUA NEI KE ZA ZHI 1983; 22:477-9. [PMID: 6653210] [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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1768
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Li F. [Characteristics of Xinjiang hemorrhagic fever virus. III. Electron microscopic observation of Xinjiang hemorrhagic fever virus]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 1983; 4:135-6. [PMID: 6414713] [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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1769
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Berg S, Jacobs SC, Cohen AJ, Li F, Marchetto D, Brown RS. The surgical management of hereditary multifocal renal carcinoma. J Urol 1981; 126:313-5. [PMID: 7277587 DOI: 10.1016/s0022-5347(17)54500-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A family was described recently in which renal carcinoma developed in 10 members in 3 consecutive generations. The cancer tended to develop in patients at an early age, and to occur in both kidneys and at multiple sites more frequently than in nonfamilial renal cancer. The finding of a balanced reciprocal translocation between chromosomes 3 and 8 in affected family members suggest that an inherited genetic defect predisposes to the development of this cancer in middle-aged patients and offers a marker for screening individuals at risk. We herein discuss the surgical management of 4 family members, the proband and 3 relatives, who were discovered on screening to have bilateral, multifocal renal cancer. Certain compromises in the principles of radical tumor surgery have proved effective in these 4 patients. Partial nephrectomy has resulted in total extirpation of the bilateral tumors with survivals of 2 to 4 years without need for chronic dialysis. The sequential order of surgical procedures is important since partial nephrectomy of the least affected side first allows a total nephrectomy on the more affected side to be done later, when necessary, without transient renal failure.
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1770
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Yao CZ, Li F, Liu YL, Zhang ZD, Wang JW, Cai BJ, Liu YY, Cheng JH, Zhao SL. [Influence of Chinese herb Lysimachia christinae Hance on immune responses in mice. I. Immunosuppressive effect (author's transl)]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1981; 3:123-6. [PMID: 6458406] [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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1771
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Li F, Brookeman JR, Rigamonti A, Scott TA. 17O NMR–NQR study of molecular motion in the liquid, and α and β solid phases of CO. J Chem Phys 1981. [DOI: 10.1063/1.441522] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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1772
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1773
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1774
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Clemmer DI, Li F, Le Blanc DR, Fox JP. An outbreak of subclinical infection with Coxsackievirus B3 in southern Louisiana. Am J Epidemiol 1966; 83:123-9. [PMID: 5910214 DOI: 10.1093/oxfordjournals.aje.a120560] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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