901
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Silverstein R, Lin CC, Rawitch AB. Evidence for an essential hydrophobic domain in the maintenance of phosphoenolpyruvate carboxykinase activity. Site-specific binding and inactivation by 1-anilinonaphthalene-8-sulfonate. J Biol Chem 1980; 255:1374-9. [PMID: 7354033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
1-Anilinonaphthalene-8-sulfonate (ANS) binds to phosphoenolpyruvate carboxykinase with subsequent rapid inactivation. Kinetics are saturating, with an enzyme half-life of 0.29 min at 4 x 10(-4) M ANS. IDP, GDP, and phosphoenolpyruvate protect against the inactivation. The enzyme is not covalently modified and it retains an affinity for protecting substrates and substrate analogs, with the exception of oxalate. Binding of ANS occurs in a hydrophobic environment, as suggested by the changes in fluorescence emission, and is markedly pH-dependent, leading to more rapid inactivation at acid pH. Inactivation by ANS differs in this respect from inactivation by N-(iodoacetylaminoethyl)-5-naphthylamine-1-sulfonate which affinity labels the enzyme (Silverstein, R., Rawitch, A.B., and Grainger, D.A. (1979) Biochem. Biophys. Res Commun. 87, 911-918). Though the mechanism by which ANS inactivates the enzyme is unclear, the effect is atypical in that ANS binding does not normally lead to irreversible inactivation.
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902
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Abstract
We describe a case of tertiary trisomy (22q11q) 47,XX,+der(22),(22pter = to 22q13 :: 11q25 = to 11qter) in a child with mental retardation, cleft palate, and congenital heart disease resulting from 3 : 1 meiotic nondisjunction in a maternal (11;22) translocation carrier. The clinical findings in previously reported cases are reviewed and compared with the features of reported patients with "partial trisomy 11q" and "trisomy 22" syndromes. Half of the ten reported families had additional balanced translocation carriers who may have an increased risk of having a liveborn child with an MCA/MR syndrome, although none have been reported to date.
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903
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Biederman BM, Florence D, Lin CC. Cytogenetic analysis of great horned owls (Bubo virginianus). CYTOGENETICS AND CELL GENETICS 1980; 28:79-86. [PMID: 7449439 DOI: 10.1159/000131515] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A chromosome analysis of seven great honored owls (Bubo virginianus, Gmelin) has been performed on peripheral lymphocytes. The modal chromosome number was found to be 2n = 82. Measurements of relative lengths and arm ratios of the macrochromosomes were made. All chromosomes contain a region of constitutive heterochromatin in a centromeric location, with the W chromosome being composed almost entirely of this material. Chromosome replication, as demonstrated by the BudR-acridine orange method, showed synchronous replication of the two Z chromosomes of the male and late replication of the W chromosome of the female. In this species, functional regions of nucleolar organization appear to be localized to the microchromosomes.
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904
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Martin RH, Lin CC, Mathies BJ, Lowry RB. X-linked mental retardation with macro-orchidism and marker-X chromosomes. AMERICAN JOURNAL OF MEDICAL GENETICS 1980; 7:433-41. [PMID: 6938132 DOI: 10.1002/ajmg.1320070405] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The family of 2 men with X-linked mental retardation was investigated for the presence of the marker-X chromosome and macro-orchidism. Lymphocyte cultures were set up in media F-10 and 199. Chromosomes were G-band-stained and slides coded for blind analysis. Marker-X chromosomes and autosomal gaps were seen only in cultures prepared with medium 199. Autosomal gaps were seen in all family members and controls. The marker-X chromosome was present inaffected male (3% and 15.5%) and female family members (0.5%-6.5%) but not in controls or a normal male family member. Bilateral macro-orchidism was present in 1 affected male and unilateral macro-orchidism in the other. Both had normal penile measurement. The replication pattern of the marker-X chromosome was studied in 1 woman by BrdU labelling. BrdU decreases the frequency of marker-X expression. As the marker-X chromosome was the late-replicating X in 9/20 cells, it appears that there is no preferential inactivation of the marker-X in this woman.
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905
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Tang CT, Ruch FE, Lin CC. Purification and properties of a nicotinamide adenine dinucleotide-linked dehydrogenase that serves an Escherichia coli mutant for glycerol catabolism. J Bacteriol 1979; 140:182-7. [PMID: 40950 PMCID: PMC216794 DOI: 10.1128/jb.140.1.182-187.1979] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Glycerol:NAD+2-OXIDOREDUCTASE (EC 1.1.1.6) was purified to homogeneity from a mutant of Escherichia coli K12 that uses this enzyme, instead of ATP:glycerol 3-phosphotransferase (EC 2.7.1.30), as the first enzyme for the dissimilation of glycerol. Polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulfate shows a subunit of 39,000 daltons. During electrophoresis under nondenaturing conditions, the protein migrates as two bands. These two forms, both of which are enzymatically active, appear to be dimers and octomers of the same subunit. The optimal pH for the oxidation of glycerol is about 10, and that for the reduction of dihydroxyacetone is about 6. Glycerol dehydrogenation is highly activated by NH4+, K+, or Rb+, but strongly inhibited by N-ethylmalemide, 8-hydroxyquinoline, 1,10-phenanthroline, Cu2+, and Ca2+. The enzyme exhibits a broad substrate specificity. In addition to glycerol, it act on 1,2-propanediol and several of its analogs.
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906
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Kuo SH, Lin CC, Yang SP. [Fine-needle aspiration cytology in the diagnosis of cervical lymphadenopathy (author's transl)]. TAIWAN YI XUE HUI ZA ZHI. JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION 1979; 78:650-52. [PMID: 291689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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907
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van de Sande JH, Lin CC, Deugau KV. Clearly differentiated and stable chromosome bands produced by a spermine bis-acridine, a bifunctional intercalating analogue of quinacrine. Exp Cell Res 1979; 120:439-44. [PMID: 436974 DOI: 10.1016/0014-4827(79)90409-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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908
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Schulman H, Saldana L, Lin CC, Randolph G. Mechanism of failed labor after fetal death and its treatment with prostaglandin E2. Am J Obstet Gynecol 1979; 133:742-52. [PMID: 434019 DOI: 10.1016/0002-9378(79)90111-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Pregnancy was terminated with prostaglandin E2 in 65 women harboring a dead fetus for 3 days to 8 weeks. The study was designed to: (1) elucidate the mechanism of failed onset of labor in the presence of fetal death, (2) determine appropriate dose-response relationships, and (3) evaluate safety and efficacy of this new method of intervention. Results indicate that plasma progesterone levels from 12 to 40 weeks' gestation are in the lower normal statistical range as compared to those seen in pregnancy with a living fetus. Uterine size as estimated from fetal birth weight is also in the low normal range compared to that seen in a viable pregnancy. Hence the uterine volume-progesterone ratio is equal to or greater than that in normal pregnancy and thereby partially explanatory for the failed initiation of labor. The dosage required to produce delivery declined in each month's grouping from a mean of 56 +/- 26 (SD) mg at 12 to 15 weeks to 22 +/- 8.4 mg at 38 to 40 weeks. Dose-delivery response did not correlate with age, parity, or progesterone levels but did correlate with oxytocin response. Three unusual and serious complications occured.
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909
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Lin CC. The efficiencies of removal of certain volatile anesthetics by activated charcoal (Aldasorber). A study on prevention of anesthetics pollution in operating theatres. TAIWAN YI XUE HUI ZA ZHI. JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION 1979; 78:157-67. [PMID: 286006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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910
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Jorgenson KF, van de Sande JH, Lin CC. The use of base pair specific DNA binding agents as affinity labels for the study of mammalian chromosomes. Chromosoma 1978; 68:287-302. [PMID: 81737 DOI: 10.1007/bf00327164] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The fluorochromes Hoechst 33258 and olivomycin are base pair specific DNA binding agents. The fluorescence enhancement of Hoechst 33258 and olivomycin in the presence of DNA can be directly related to the A--T and G--C content of the interacting DNA respectively. Cytological observations of metaphase chromosomes treated with these two compounds suggest that the fluorescent banding patterns produced are the reverse of one another.--Non-fluorescent base pair specific DNA binding agents have been used as counterstains in chromosome preparations to enhance the contrast of the banding patterns produced by the base specific fluorochromes. The non-fluorescent G--C specific antibiotic actinomycin-D enhanced the resolution of fluorescent bands produced by the A--T specific fluorochrome Hoechst 33258. Similarly the non-fluorescent A--T specific antibiotic netropsin was found to enhance resolution of the bands produced by the G--C -specific fluorochrome olivomycin. Netropsin was also found to increase the differential fluorescent enhancement of complexes of olivomycin with DNAs of various base composition in solution. These findings suggest that counterstaining agents act through a base sequence dependent inhibition of subsequent binding by base pair specific fluorochromes.--The base specific DNA binding agents have been used to differentiate different types of constitutive heterochromatin in mammalian species, and to facilitate chromosome identification in somatic cell hybrids.
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911
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Johnston FP, Jorgenson KF, Lin CC, van de Sande JH. Interaction of anthracyclines with DNA and chromosomes. Chromosoma 1978; 68:115-29. [PMID: 80312 DOI: 10.1007/bf00287144] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Daunomycin and adriamycin were previously found to produce Q-like banding patterns on chromosomes. The interaction of several anthracyclines with both natural and synthetic DNAs and chromosomes has been investigated in more detail. Daunomycin fluorescence is almost completely quenched by natural DNAs with varying base composition from 31 to 72% G-C and by the alternating polymer poly-d(G-C).poly-d(G-C). In contrast, daunomycin fluorescence is quenched by only 50% when the dye interacts with synthetic A-T polymers. Thus, differential quenching of daunomycin fluorescence can account for the production of bright bands at contiguous A-T sequences along the chromosome. Slight differences in fluorescence quenching between the repeating and homopolymeric A-T duplex DNAs were observed which can be attributed to differences in affinity of daunomycin for these DNAs. The aminosugar moiety of daunomycin, daunosamine, increases the binding of daunomycin to DNA and also enhances chromosome banding.--Nogalamycin, which displays no differential quenching with the different DNAs in solution, also fails to produce bands on chromosomes.--These findings suggest that non-random nucleotide sequence arrangements along the chromosome are a basic determinant for dye interaction to produce the observed banding patterns. Specific banding procedures may determine the accessibility of these sites within the chromosomal DNA.
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912
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Mahler HR, Lin CC. Exogenous adenosine 3': 5'-monophosphate can release yeast from catabolite repression. Biochem Biophys Res Commun 1978; 83:1039-47. [PMID: 213060 DOI: 10.1016/0006-291x(78)91500-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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913
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Mahler HR, Lin CC. Molecular events during the release of delta-aminolevulinate dehydratase from catabolite repression. J Bacteriol 1978; 135:54-61. [PMID: 353037 PMCID: PMC224765 DOI: 10.1128/jb.135.1.54-61.1978] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Transfer of exponential-phase cells of Saccharomyces cerevisiae, previously grown in 2% glucose, to a derepression medium resulted in a prompt increase in the level of delta-aminolevulinate dehydratase, the rate-limiting enzyme of heme biosynthesis under these conditions. This derepression exhibited a lag of 35 min at 23 degrees C and required the participation of both RNA and protein syntheses. Dissection of the molecular events during this lag period disclosed that RNA synthesis, rnal gene function (messenger RNA transport from nucleus to cytosol), and initiation of protein synthesis were completed within less than 10, 18, and 24 min, respectively. The potential regulation of derepression by mitochondrial gene products and mitochondrial function was probed by means of a series of isogenic, respiration-deficient (rho-, pet-, and mit-) mutants; no such regulation was found.
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914
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Marx GF, Kim YI, Lin CC, Halevy S, Schulman H. Postpartum uterine pressures under halothane or enflurance anesthesia. Obstet Gynecol 1978; 51:695-8. [PMID: 662248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Postpartum uterine pressures were measured in healthy women with an intrauterine microballoon before, during, and after administration of different concentrations of halothane or enflurane. Arterial blood samples for anesthetic levels were obtained at intervals. Frequency and intensity of contractions diminished markedly when blood levels exceeded the equivalent of 1/2 MAC (minimum alveolar anesthetic concentration which produces immobility in one-half of subjects exposed to a noxious stimulus) of nonpregnant adults, but normal patterns returned promptly on lightening of anesthesia. Response to 10 mU of oxytocin was suppressed at blood levels corresponding to between 3/4 and 1 MAC of the agents. Halothane and enflurane exert equipotent dose-related reversible effects on the activity of the full-term pregnant human uterus.
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915
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Lin CC, Schulman H, Saldana LR. Deceleration/contraction ratios as an index of fetal health during labor. Obstet Gynecol 1978; 51:666-70. [PMID: 26900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Internal FHR tracings of 259 patients with variable decelerations and 49 with late decelerations were analyzed for frequency and severity of the pattern in an attempt to correlate with fetal pH or Apgar score at 1 minute. A significant increase in the risk of fetal acidosis was associated with a frequency of greater than 30% variable decelerations and 20% late decelerations. It also increased with the increase of severity of the pattern. Variable decelerations are not good predictors of Apgar scores less than or equal to 6 at 1 minute, but late decelerations are predictive when they occur more than 20% of the time. The fetus with variable decelerations a normal pH can be observed through the first stage of labor with a high degree of confidence. However, when a 20% or more moderate-to-severe late deceleration/contraction ratio is present, intervention is necessary even if scalp blood pH is normal. The FHR deceleration/uterine contraction (UC) ratio is a simple bedside technique for assessing fetal outcome.
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916
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Nosanchuk JS, D'Souza JP, Mudholkar GS, Lin CC, Verno M, Buchanan B. A comparative study of five commercial reagents for the Coulter Model S: a proposed method for reagent evaluation. Arch Pathol Lab Med 1978; 102:258-62. [PMID: 25639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A comparative study of five competitive commercial reagents for the Coulter Model S was performed jointly by two large, busy hospital laboratories with active quality control programs. Both laboratories, independently using the same reagent systems, studied 20 consecutive blood samples from patients from their own respective hospital for 20 days. Data from both laboratories were analyzed by standard and nonstandard statistical methods, and the results from both laboratories were compared. Although all reagent systems performed reasonably well in a clinical setting, highly significant statistical differences in their precisions were demonstrated by using univariate and multivariate techniques. The statistical method developed in this study can be applied to other systematic investigations that compare reagent systems.
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917
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Lin CC, Chen CS. Bronchial adenoma. Chin Med J (Engl) 1978; 4:234-6. [PMID: 98308] [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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918
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Dubois RJ, Lin CC, Beisler JA. Synthesis and antitumor properties of some isoindolylalkylphosphonium salts. J Med Chem 1978; 21:303-6. [PMID: 564408 DOI: 10.1021/jm00201a016] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Antitumor evaluation of 2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)ethyltriphenylphosphonium bromide (1) revealed significant activity in P-388 lymphocytic leukemia (T/C = 160%). As a follow-up to this chemical lead, a series of closely related phosphonium salts was prepared in which the 1,3-dihydro-1,3-dioxo-2H-isoindole ring system was maintained or in which it was replaced by other moieties such as maleimido, bromo, methoxy, and isoindoline. Syntheses generally involved treatment of the appropriate N-(bromoalkyl)phthalimide with the required phosphine or condensation of the K salt of the substituted imide with beta-(bromoethyl)triphenylphosphonium bromide (12). From the biological data obtained for these compounds, several requirements can be defined for substantial antileukemic activity. Of utmost importance is the presence of a triarylphosphonium halide moiety, coupled to an alkyl chain of two or three carbon atoms. The preferred terminus of the alkyl chain is the 1,3-dihydro-1,3-dioxo-2H-isoindole ring system, although the observed activity of beta-(bromoethyl)-triphenylphosphonium bromide (12) (T/C = 127%) would suggest that a superior carrier molecule could be developed.
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919
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Lin CC, Kwan HW, Shiau YY, Yao YT. [The histopathological study of odontogenic tumors (author's transl)]. TAIWAN YI XUE HUI ZA ZHI. JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION 1978; 77:251-62. [PMID: 275453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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920
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Lin HJ, Lin CC, Chen SH, Hsu WJ, Lin WS. Infantile hemangioendothelioma of the liver. TAIWAN YI XUE HUI ZA ZHI. JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION 1978; 77:120-6. [PMID: 274513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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921
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Schulman H, Lin CC, Saldana L, Randolph G. Quantitative analysis in the oxytocin challenge test. Am J Obstet Gynecol 1977; 129:239-44. [PMID: 900193 DOI: 10.1016/0002-9378(77)90772-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A quantitative analysis of the oxytocin challenge test (OCT) was carried out in 305 women to evaluate: (1) the intrauterine pressures evoked during the oxytocin infusion, (2) when fetal heart rate (FHR) decelerations are likely to occur, (3) the type and amount of decelerations which are significant, and (4) what clinical events and laboratory parameters correlate with the OCT. If contractions are evoked at a rate of three per 10 minutes, the pressure profile mimics normal labor. The first FHR deceleration is likely to occur between the second and third effective contraction. A deceleration/contraction ratio greater than or equal to 10% significantly forecasts an abnormal FHR during parturition and an increased chance of a cesarean section.
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922
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Lin CC, Dubois RJ. Pyrimidinylpropenamides as antitumor agents. Analogues of the antibiotic sparsomycin. J Med Chem 1977; 20:337-41. [PMID: 845865 DOI: 10.1021/jm00213a004] [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: 12/24/2022]
Abstract
A series of pyrimidinylpropenamides 9 and their oxidation products 10 was prepared, as analogues of sparsomycin (1), for antitumor evaluation. Syntheses involved condensation of the appropriate amino alcohol 5 with acid 8. The resulting sulfides 9 were then oxidized with NaIO4 or H2O2 to sulfoxides 10. Activity was studied in lymphocytic leukemia P-338 and KB cell culture. With the exception of the n-decyl analogue, all of the deoxygenated compounds 9 were inactive regardless of the stereochemical form. In the sulfoxide series 10, those compounds prepared with an L configuration at the asymmetric carbon were also inactive. The completely racemic sulfoxides, on the other hand, displayed substantial antitumor activity (ILS = 37-61% in P-388; ED50 = 1.2-2.4 mug/ml in KB) suggesting that both the presence of a sulfoxide moiety and a D configuration at the chiral carbon atom were structural requirements for a positive antitumor response. There appeared to be a large tolerance for the group substituted at the sulfoxide moiety, however.
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923
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van de Sande JH, Lin CC, Jorgenson KF. Reverse banding on chromosomes produced by a guanosine-cytosine specific DNA binding antibiotic: olivomycin. Science 1977; 195:400-2. [PMID: 63994 DOI: 10.1126/science.63994] [Citation(s) in RCA: 43] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Characteristic reverse fluorescent banding patterns (R bands) on human, bovine, and mouse metaphase chromosomes are produced by treating chromosome preparations directly with olivomycin. With the DNA in solution, the repeating polymer poly[d(G-C)] - poly[d((G-C)] (where G is guanine and C is cytosine) enhanced the fluorescence of olivomycin, while the antibotic fluorescence was not affected by the alternating polynucleotide poly]d(A-T)] - poly[d(A-T)] (where A is adenine and T is thymine). Calf thymus DNA, with an intermediate G-C content of about 40 percent, showed a smaller fluorescence enhancement in the presence of olivomycin as was observed for the synthetic polynucleotide poly[d(G-C)] - poly [d(G-C)]. The closely related antibiotic chromomycin A3 showed the same results as were obtained with olivomycin either in the solution interaction with specific DNA's or with the netaphase chromosome preparations. The production of R bands by these G-C-specific DNA binding antibiotics lends credence to the suggestion that the arrangement of the nucleotide sequences along the chromosome is a primary determinant for the appearance of fluorescent bands.
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924
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925
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Lin CC, Kavanagh AJ, Aronson MM, Greene AE, Coriell LL. A (9;17) translocation, 46 chromosomes. Repository identification No. GM-988. CYTOGENETICS AND CELL GENETICS 1977; 18:244. [PMID: 872632 DOI: 10.1159/000130769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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926
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Shigeoka JW, Hall WJ, Hyde RW, Schwartz RH, Mudholkar GS, Speers DM, Lin CC. The prevalence of alpha-antitrypsin heterozygotes (Pi MZ) in patients with obstructive pulmonary disease. THE AMERICAN REVIEW OF RESPIRATORY DISEASE 1976; 114:1077-84. [PMID: 1087539 DOI: 10.1164/arrd.1976.114.6.1077] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An increased incidence of intermediate deficiency of serum alpha1-antitrypsin resulting from Pi phenotype MZ has been reported in patients with chronic obstructive pulmonary disease (COPD) by some laboratories but not confirmed by others. Prevalence of Pi MZ was determined in patients with COPD among 502 subjects referred to a pulmonary function testing laboratory in a region with low concentrations of air pollutants. Control prevalences were obtained from 930 randomly selected subjects in the same community as well as from patients without COPD referred to the laboratory. Depending on criteria used to define COPD, 155 to 306 subjects had COPD. Pi MZ prevalence in subjects with COPD varied from 1.5 to 4 times the prevalence in the community control group and in the patients without COPD. This difference approached significance or was significant. Because Pi MZ was present in only 3.5 to 4.5 per cent of patients with COPD, Pi MZ is not a major factor in the etiology of COPD in this community. The higher incidence of Pi MZ inpatients with COPD reported by other investigators may be explained by small sample size, bias in selection of study or control population groups, or the development of COPD from interaction between Pi MZ and air pollutants or other factors not present in this community.
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927
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Lin CC, Harper RG, Valenti C. De Lange syndrome. Clinical, dermatoglyphic and chromosomal findings in nine cases. LA RICERCA IN CLINICA E IN LABORATORIO 1976; 6:332-41. [PMID: 1025650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Nine cases of the de Lange syndrome are reviewed. Our findings show that the facial characteristics in the present series and in previously reported cases are remarkably similar. Dermatoglyphically, we have documented an increased incidence of tibial loops on the hallucal area and increased incidence of single flexion creases of the digits from this study series. Our study also supports the previous authors who have recorded an increased incidence in radial loops on the second and third digits and increased incidence of simian lines. We have not been able to document a consistent chromosomal defect.
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928
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Yang SP, Lin CC, Wu MC, Luh KT, Kuo SH. [Prevalence survey of primary lung cancer in Taiwan]. TAIWAN YI XUE HUI ZA ZHI. JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION 1976; 75:429-34. [PMID: 1068215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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929
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Abstract
Hyphal walls were isolated from the Oomycete, Apodachlya sp. Microscope examination of wall preparations showed that they were clean and relatively free of cellulin granules. The principal wall constituents, accounting for more than half of wall weight, were beta-glucans with 1,3- and 1,6-glucosidic linkages. Apparently chitin was the second most abundant wall constituent (18%) and cellulose accounted for less than 10% of wall weight. Protein was a significant wall constituent (6.4%), and protein hydrolysis demonstrated nearly all common amino acids plus hydroxyproline; additionally, the unusual amino acid, hydroxylysine was tentatively identified. The lipid and ash constituents were small (1.7and 0.4%, respectively) and no particular significance was assigned to them. The possible occurrence of wall glycoproteins and the relationship between wall chemistry and systematics in Apodachlya and related genera were discussed.
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930
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Lin CC, Gedeon MM, Griffith P, Smink WK, Newton DR, Wilkie L, Sewell LM. Chromosome analysis on 930 consecutive newborn children using quinacrine fluorescent banding technique. Hum Genet 1976; 31:315-28. [PMID: 60278 DOI: 10.1007/bf00270861] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Chromosome analysing using quinacrine fluorescence was performed on 930 consecutive newborn infants. The total incidence of major chromosome aberrations including numerical changes of the sex chromosomes, and structural changes of autosomes, was 0.54%. Incidence of XYY (0.4%) and XXY (0.2%) were relatively higher as compared to other studies. About 0.75% of the newborn infants were found to have a variable bright fluorescent band located on the proximal area of the short arm (p11) rather than on the proximal long arm (q11) of chromosome No. 3. Attempts were also made to record the variable fluorescent regions on 7 autosomes and the Y chromosome.
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MESH Headings
- Chromosome Aberrations/epidemiology
- Chromosome Disorders
- Chromosome Inversion
- Chromosomes, Human, 1-3
- Chromosomes, Human, 13-15
- Chromosomes, Human, 21-22 and Y
- Chromosomes, Human, 4-5
- Female
- Genetic Variation
- Humans
- Infant, Newborn
- Male
- Ontario
- Quinacrine
- Sex Chromosomes
- Staining and Labeling
- Translocation, Genetic
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931
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Lin CC, Van de Sande JH. Differential fluorescent staining of human chromosomes with daunomycin and adriamycin--the d-bands. Science 1975; 190:61-3. [PMID: 52193 DOI: 10.1126/science.52193] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Human chromosome preparations were treated with a group of anthracycline antibiotics. Well-defined, orange-red fluorescent bands were observed on chromosomes after the slide was stained with daunomycin and adriamycin but not with nogalamycin. The characteristic differential bands appeared to be similar to the banding patterns obtained by the quinacrine techniques. Interaction of these antibiotics with DNA could provide information on the general mechanism of fluorescent banding. Further, these bands (D-bands) appeared to be more stable than the Q-bands and may have some usefulness for routine clinical cytogenetic analysis.
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932
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Mahler HR, Assimos K, Lin CC. Derepression in Saccharomyces cerevisiae can be dissociated from cellular proliferation and deoxyribonucleic acid synthesis. J Bacteriol 1975; 123:637-41. [PMID: 1099068 PMCID: PMC235770 DOI: 10.1128/jb.123.2.637-641.1975] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
A method has been developed that permits precise control of release from catabolite repression in Saccharomyces cerevisiae. It consists of transferring cells growing exponentially on 5% glucose to derepression medium at high cell density. Derepression then proceeds with reproducible kinetics and is complete within 6 to 7.5 h for various intra- and extramitochondrial markers, in the absence of any substantial increase in cellular dry weight or protein. Nuclear (and mitochondrial) deoxyribonucleic acid synthesis can be interrupted in certain thermosensitive (cdc) mutants at the nonpermissive temperature; a shift to this temperature before the onset of derepression has no effect on its outcome.
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933
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Abstract
No information is available on the structural requirements for the antitumor activity of sparsomycin, an antibiotic obtained from the fermentation broth of Streptomyces sparsogenes. Its high in vivo and in vitro activity, novel structure, and uncommon mode of action have, therefore, suggested the synthesis of analogs. This report describes the preparation and screening of a series of N-substituted 3-aryl acrylamides which are closely related to sparsomycin. Three compounds exhibited some tumor inhibition but insufficient to warrant further testing.
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934
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Lin CC, van de Sande H, Smink WK, Newton DR. Quinacrine fluorescence and Q-banding patterns of human chromosomes. I. Effects of varying factors. CANADIAN JOURNAL OF GENETICS AND CYTOLOGY. JOURNAL CANADIEN DE GENETIQUE ET DE CYTOLOGIE 1975; 17:81-92. [PMID: 48411 DOI: 10.1139/g75-009] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Various factors involved in the production of "Q-bands" have been studied. It was found that a Zeiss standard WL fluorescent microscope required a shorter exposure time for photography as compared to a Zeiss photomicroscope. The minimal exposure time was obtained when the standard WL microscope was equipped with a UV light source containing a DC powered mercury burner and a concave mirror. Further, the pH and type of water used in the staining, washing and mounting of the slide were also important factors in producing clear and well differentiated "Q-bands". It also appears that the factors involved in the production of "Q-bands" effect the enhancement or quenching of fluorescence by poly d(A-T)-poly d(A-T) and salmon sperm DNA or poly dG-poly dC respectively. This preliminary report also suggests that DNA or polynucleotides with a specific base sequence may play an important role in Q-banding patterns on chromosomes.
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935
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Lin CC, Uchida I, Hotz H, Miller RC, Greene AE, Coriell LL. An (8;12) translocation, balanced, 46 chromosomes. Repository identification No. GM-213. Cytogenet Genome Res 1975; 14:78-9. [PMID: 124242 DOI: 10.1159/000130321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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936
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Mahler HR, Lin CC. The derepression of delta-aminolevulinate synthetase in yeast. Biochem Biophys Res Commun 1974; 61:963-70. [PMID: 4615712 DOI: 10.1016/0006-291x(74)90249-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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937
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Goldstein S, Lin CC, Singal DP. Immunological selection of HL-A variants of cultured progeric fibroblasts and their identification by quinacrine fluorescence. Exp Cell Res 1974; 89:451-4. [PMID: 4141969 DOI: 10.1016/0014-4827(74)90822-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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938
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939
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Hsu CC, See R, Lin CC. [6-year longitudinal study of urban primary school students' responses to Raven's Progressive Matrices in Taiwan]. TAIWAN YI XUE HUI ZA ZHI. JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION 1974; 73:451-60. [PMID: 4530035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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940
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Kuo SH, Lin CC, Yang SP. Reliability of the tissue stamp smear cytology. TAIWAN YI XUE HUI ZA ZHI. JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION 1974; 73:147-52. [PMID: 4135155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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941
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Yang CL, Chen KP, Wu HY, Chang KK, Wu CN, Wei H, Yen CH, Hsu SC, Lin CC, Wang W, Lin TL. A study on health manpower supply in Taiwan. I. Current situation of nurses and midwives. TAIWAN YI XUE HUI ZA ZHI. JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION 1974; 73:153-64. [PMID: 4526013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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942
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Luh KT, Kuo SH, Lin CC, Yang SP, Chen KP. Primary lung cancer in Taiwan. I. Chronological observation of epidemiological characteristics with etiological consideration. TAIWAN YI XUE HUI ZA ZHI. JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION 1974; 73:129-46. [PMID: 4135154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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943
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Lin CC. Proceedings: Q-banding pattern analysis of KB cells. CYTOGENETICS AND CELL GENETICS 1974; 13:117-22. [PMID: 4133282 DOI: 10.1159/000130251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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944
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Chan SK, Reibling A, Mahaffey WL, Lin CC. The delta-aminolevulinic acid synthetase activity and the effect of exogenous delta-aminolevulinate on the synthesis of cytochrome c in the thoracic muscles of the tobacco horn worm during adult development. BIOCHIMICA ET BIOPHYSICA ACTA 1973; 329:251-5. [PMID: 4358406 DOI: 10.1016/0304-4165(73)90289-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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945
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Ward EJ, Lin CC, Johnston DH. Meiotic study on supernumerary microchromosomes of red fox (Vulpes vulpes). CANADIAN JOURNAL OF GENETICS AND CYTOLOGY. JOURNAL CANADIEN DE GENETIQUE ET DE CYTOLOGIE 1973; 15:825-30. [PMID: 4781372 DOI: 10.1139/g73-096] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Numerical variation of microchromosomes between animals has been confirmed for somatic cells and shown in meiotic material. Nucleolar organizers on the supernumeraries were demonstrated by attachment of nucleoli at the heterochromatin of accessory bivalents. Two types of supernumeraries may segregate in the fox, one of which probably has two structural forms. Precocious separation of accessories was noted at diakinesis.
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946
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Hsu CC, See R, Lin CC. [Assessment of learning potential of Chinese children with Raven's Standard Progressive Matrices]. TAIWAN YI XUE HUI ZA ZHI. JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION 1973; 72:658-70. [PMID: 4522054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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947
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Lin TM, Chen KP, Lin CC, Hsu MM, Tu SM, Chiang TC, Jung PF, Hirayama T. Retrospective study on nasopharyngeal carcinoma. J Natl Cancer Inst 1973; 51:1403-8. [PMID: 4762926 DOI: 10.1093/jnci/51.5.1403] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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948
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Lin TM, Yang CS, Chiou JF, Tu SM, Lin CC, Liu CH, Chen KP, Ito Y, Kawamura A, Hirayama T. Seroepidemiological studies on carcinoma of the nasopharynx. Cancer Res 1973; 33:2603-8. [PMID: 4355974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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949
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Lin CC, Magat J, Chang R, McGlotten J, Symchowicz S. Absorption, metabolism and excretion of 14C-griseofulvin in man. J Pharmacol Exp Ther 1973; 187:415-22. [PMID: 4748557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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950
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Younglai EV, Lin CC. Fetal androgen and human chorionic gonadotropin excretion in relation to genetic sex. Am J Obstet Gynecol 1973; 117:291-2. [PMID: 4728884 DOI: 10.1016/0002-9378(73)90653-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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