1,729,084 research outputs found
Ultrastructure of sertoli cells in cryptorchid goats
No full textPT: J; CR: AMAT P, 1985, J ANDROL, V6, P1 CHEMES HE, 1979, BIOL REPROD, V21, P241 CHEVALIER M, 1978, ANN BIOL ANIM BIOCH, V18, P1279 CLEGG EJ, 1963, J ENDOCRINOL, V26, P567 EZEASOR DN, 1985, J ANAT, V141, P27 EZEASOR DN, 1987, AM J VET RES, V48, P1736 HADZISELIMOVIC F, 1980, CLIN ANDROLOGY DESCE, V3, P163 HATIER R, 1980, ANAT EMBRYOL, V160, P11 JONES TM, 1977, ANAT REC, V189, P1 KERR JB, 1975, J REPROD FERTIL, V43, P1 KERR JB, 1979, BIOL REPROD, V21, P823 KOFF WC, 1988, SCIENCE, V241, P426 ROSS MH, 1975, ANAT REC, V183, P267 SCHULZE C, 1976, ANDROLOGIA, V8, P167 SINGH A, 1981, PATHOLOGY, V13, P487 SINGH A, 1989, DEV ULTRASTRUCTURE R, P159 SKINNER MK, 1985, J CELL BIOL, V100, P1941 TOYAMA Y, 1975, CELL TISSUE RES, V158, P205 TRAN D, 1982, ENDOCRINOLOGY, V111, P1562 VANVORSTENBOSCH CJ, 1984, BIOL REPROD, V31, P565; NR: 20; TC: 3; J9: ARCH ANDROLOGY; PG: 10; GA: AM133Source type: Electronic(1
Liver ultrastructure in pigs fed various oils
No full textPT: J; CR: ABDELLATIF AMM, 1970, STE ADELE QUEBE 0920, P423 ACKMAN RG, 1977, FETT SEIFEN ANSTR, V79, P15 ASTORG PO, 1977, ANN NUTR ALIMENT, V31, P43 BEAREROGERS JL, 1977, PROG CHEM FATS OTHER, V15, P29 BLOMSTRAND R, 1974, LIPIDS, V9, P771 CHRISTIANSEN RZ, 1979, BIOCHIM BIOPHYS ACTA, V573, P417 CHRISTOPHERSEN BO, 1972, BIOCHIM BIOPHYS ACTA, V280, P506 FLAKS B, 1971, J ANAT, V108, P563 GHADIALLY FN, 1975, ULTRASTRUCTURAL PATH, P160 HEIJENSKJOLD L, 1975, ACTA MED SCAND S, V585, P75 HOUTSMULLER UMT, 1970, BIOCHIM BIOPHYS ACTA, V218, P564 HSU CML, 1977, LIPIDS, V12, P486 JONES AL, 1966, J HISTOCHEM CYTOCHEM, V14, P215 KRAMER JKG, 1978, CAN J ANIM SCI, V58, P257 LAZAROW PB, 1976, P NATL ACAD SCI USA, V73, P2043 MICHALEK H, 1975, NUTR METAB, V18, P272 QUAN PC, 1974, COMPTES RENDUS HEB D, V279, P579 REMMER H, 1963, SCIENCE, V142, P1657 ROCQUELIN G, 1977, MED NUTR, V13, P269 SINGH A, 1976, P CANADIAN FEDERATIO, V19, P15 SINGH A, 1977, CAN VET J, V18, P140 SINGH A, 1977, P CANADIAN FEDERATIO, V20, P6 TREMOLIERES J, 1972, CAH NUTR DIET, V7, P155 VODOVAR N, 1973, J MICROSCOPIE PARIS, V17, A109; NR: 24; TC: 2; J9: RES VET SCI; PG: 6; GA: LS822Source type: Electronic(1
Ultrastructure of the thyroid-glands of rats fed photomirex: an 18-month recovery study
No full textPT: J; CR: CARLSON DA, 1976, SCIENCE, V194, P939 CHU I, 1981, TOXICOLOGY, V21, P235 COLLINS WT, 1977, AM J PATHOL, V84, P119 ERICSON LE, 1981, MOL CELL ENDOCRINOL, V22, P1 FUJITA H, 1975, INT REV CYTOL, V40, P197 FUJITA H, 1980, J GERONTOL, V35, P3 GARNER HS, 1975, J GERONTOL, V30, P137 HALLETT DJ, 1976, J AGR FOOD CHEM, V24, P1189 HALLETT DJ, 1978, J AGR FOOD CHEM, V26, P388 IVES PJ, 1975, MECHANISMS AGEING DE, V4, P399 KASZA L, 1978, J ENVIRON PATHOL TOX, V1, P587 MIQUELIS R, 1981, EUR J CELL BIOL, V24, P70 PENEL C, 1981, EXPERIENTIA, V37, P1010 SINGH A, J ENV PATHOL TOXICOL SINGH A, ZENTRALBL VET C SINGH A, 1981, PATHOLOGY, V13, P487 VANDENHOVEVANDE.MF, 1980, THYROID GLAND, P61 VANHERLE AJ, 1979, NEW ENGL J MED, V301, P239 VILLENEUVE DC, 1979, TOXICOL APPL PHARM, V47, P105; NR: 19; TC: 9; J9: TOXICOLOGY; PG: 11; GA: NW764Source type: Electronic(1
PCB 118 induces ultrastructural alterations in the rat liver
No full textPolychlorinated biphenyls (PCBs) are ubiquitous environmental contaminants that bioaccumulate in the food chain and thus pose a health risk to humans and other animals. In this study, PCB 118 was added to the diets of Sprague Dawley rats for 13 weeks in concentrations of 2, 20, 200, 2000 p.p.b. to the females and 10, 100, 1000 and 10 000 p.p.b, to the males. The chemical was dissolved in corn oil; animals that served as the control received corn oil in the diets devoid of PCB. Use of transmission electron microscopy and stereology revealed significant (P < 0.05) elevation in the mean volume fraction of smooth reticulum profiles (20 p.p.b.), peroxisomes (200, 2600 p.p.b.) and lipid droplets (2000 p.p.b.) in the females. Hepatocytes from the males exhibited a significant increase in the mean volume fraction of lipid droplets at 10 000 p.p.b. (P < 0.05). Interactions between large quantity of estrogen and the PCB probably would account for more profound alterations in the liver of female Sprague-Dawley rats than in the males. (C) 2000 Elsevier Science Ireland Ltd. All rights reserved.PT: J; CR: BOLL M, 1998, XENOBIOTICA, V28, P479 BURSE VW, 1974, ARCH ENVIRON HEALTH, V29, P301 CASLEYSMITH JR, 1967, J R MICROSC SOC, V87, P463 CHU I, 1995, FUND APPL TOXICOL, V26, P282 CLARKE DW, 1984, CAN J PHYSIOL PHARM, V62, P1253 CONNELL BJ, 1998, J SUBMICR CYTOL PATH, V30, P157 CONNELL BJ, 1999, TOXICOLOGY, V136, P107 CULLEN JM, 1991, HEPATOTOXICOLOGY, P67 DAR E, 1992, ENVIRON RES, V59, P189 ESPEEL M, 1997, MICROSC RES TECHNIQ, V39, P453 GALLANT TL, 1999, P 165 ANN M AM ASS A, V165, A71 GHADIALLY FN, 1988, ULTRASTRUCT PATHOL, V2, P767 GILLETTE DM, 1987, FUND APPL TOXICOL, V8, P4 GILROY C, 1998, TOXICOLOGY, V127, P179 HARRIS C, 1984, ARCH ENVIRON CON TOX, V13, P715 HINTON DE, 1978, VIRCHOWS ARCH B, V27, P279 HUFF J, 1994, ANNU REV PHARMACOL, V34, P343 KEDDERIS GL, 1998, CIIT ACTIVITIES, V18, P1 KIMBROUGH RD, 1995, CRIT REV TOXICOL, V25, P133 LEMARCHAND Y, 1973, J BIOL CHEM, V248, P6862 LODISH L, 1995, MOL CELL BIOL, P170 MACLELLAN K, 1994, HISTOL HISTOPATHOL, V9, P461 MACLELLAN K, 1994, J SUBMICR CYTOL PATH, V26, P279 MARTUCCI CP, 1993, PHARMACOL THERAPEUT, V57, P237 MCFARLAND VA, 1989, ENVIRON HEALTH PERSP, V81, P225 NISHIZUMI M, 1970, ARCH ENVIRON HEALTH, V21, P620 ORCI L, 1973, NATURE, V244, P30 PARKINSON A, 1996, CASARETT DOULLS TOXI, P113 PENG J, 1995, P MICROSC MICROANAL, V1, P994 PENG J, 1997, TOXICOLOGY, V120, P171 RENDER JA, 1982, TOXICOL APPL PHARM, V62, P428 ROSS MH, 1995, HISTOLOGY TEXT ATLAS, P496 SAFA B, 1997, TOXICOL LETT, V90, P163 SAFE S, 1984, CRC CRIT R TOXICOL, V13, P319 SATO T, 1968, J ELECTRON MICROSC, V17, P158 SCHECTER A, 1984, BANBURY REPORT, V18, P177 SINGH A, 1975, EUR J CLIN INVEST, V5, P495 SINGH A, 1981, PATHOLOGY, V13, P487 SINGH A, 1996, ULTRASTRUCT PATHOL, V20, P275 SINGH A, 1997, ULTRASTRUCT PATHOL, V21, P143 SINGH A, 1999, IN PRESS J SUBMICROS UNDERWOOD EE, 1970, QUANTITATIVE STEREOL, P25 WASSERMANN D, 1979, TOXICOL EUR RES, V1, P159 WEIBEL ER, 1969, J CELL BIOL, V42, P68 ZUBAY GL, 1995, PRINCIPLES BIOCH, P412; NR: 45; TC: 2; J9: TOXICOLOGY; PG: 8; GA: 311PESource type: Electronic(1
Uranyl nitrate-induced glomerular-basement-membrane alterations in rabbits: a quantitative-analysis
No full textPT: J; CR: AVASTHI PS, 1980, J CLIN INVEST, V65, P121 BLANTZ RC, 1985, KIDNEY INT, V28, P733 FOULKES EC, 1971, TOXICOL APPL PHARM, V20, P380 HAYASHIDA M, 1986, EXP GERONTOL, V21, P535 KANWAR YS, 1979, J CELL BIOL, V81, P137 KOBAYASHI S, 1984, KIDNEY INT, V26, P808 LATOUCHE YD, 1987, HEALTH PHYS, V53, P147 OSTERBY R, 1971, LAB INVEST, V25, P15 OSTRBY R, 1975, ACTA MED SCAND S, V574, P1 SEILER MW, 1975, SCIENCE, V189, P390 SINGH A, 1981, PATHOLOGY, V13, P487 SINGH A, 1985, ANN M AM ASS ADV SCI STEFFES MW, 1983, LAB INVEST, V49, P82 STEIN JH, 1975, KIDNEY INT, V8, P27 WEHNER H, 1973, DIABETOLOGIA, V9, P255; NR: 15; TC: 4; J9: BULL ENVIRON CONTAM TOXICOL; PG: 7; GA: HC562Source type: Electronic(1
PCB congener 77-induced ultrastructural alterations in the rat liver: a quantitative study
No full textLiver alterations were estimated morphometrically in male and female Sprague-Dawley rats that were fed PCB congener 77 (3,3',4,4'-tetrachlorobiphenyl) in concentrations of 0.01, 0.1, 1, 10 ppm or corn oil in diets for 13 weeks. A dose-dependent increase in the volume of smooth endoplasmic reticulum (SER) and an elevation in the volume of mitochondria following administration of the highest congener concentration (10 ppm) were estimated in the female rats. Hepatocytes of the male rats contained a significantly greater baseline volume of both SER and mitochondria compared to that in the females. A statistically significant (P < 0.05) change in the volumes of either SER or mitochondria in the PCB-fed males was not revealed. The authors concluded that the increase in mitochondrial volume was probably a necessary cellular adaptation to meet the heightened energy demands required by the SER to detoxify the PCB. The use of morphometric rather than a descriptive methodology allowed for a better determination of the hepatic alterations induced by PCB 77. (C) 1998 Elsevier Science Ireland Ltd. All rights reserved.PT: J; CR: AHLBORG UG, 1994, CHEMOSPHERE, V28, P1049 CHU I, 1995, FUND APPL TOXICOL, V26, P282 CLARKE DW, 1984, CAN J PHYSIOL PHARM, V62, P1253 DEVITO MJ, 1993, FUND APPL TOXICOL, V20, P125 DURHAM SK, 1989, TOXICOL PATHOL, V17, P782 GHADIALLY FN, 1988, ULTRASTRUCT PATHOL, V2, P767 GILLETTE DM, 1987, FUND APPL TOXICOL, V8, P5 GUNDERSEN HJG, 1985, J MICROSC-OXFORD, V138, P127 HANSELL MM, 1974, TOXICOL APPL PHARM, V28, P418 HARRIS C, 1984, ARCH ENVIRON CON TOX, V13, P715 HUFF J, 1994, ANNU REV PHARMACOL, V34, P343 KASZA L, 1978, J ENVIRON PATHOL TOX, V1, P241 KIMBROUGH RD, 1972, ARCH ENVIRON HEALTH, V25, P354 LIN FS, 1979, ARCH ENV CONTAM TOXI, V88, P321 MACLELLAN K, 1994, HISTOL HISTOPATHOL, V9, P453 MACLELLAN K, 1994, HISTOL HISTOPATHOL, V9, P461 MACLELLAN K, 1994, J SUBMICR CYTOL PATH, V26, P279 OKEY AB, 1990, PHARMACOL THERAPEUT, V45, P241 PARKINSON A, 1980, CHEM-BIOL INTERACT, V30, P217 PATTERSON DG, 1994, ENVIRON HEALTH PERSP, V102, P195 PENG J, 1997, TOXICOLOGY, V120, P171 SAFE SH, 1994, CRIT REV TOXICOL, V24, P87 SATO T, 1968, J ELECTRON MICROSC, V17, P158 SCHECTER A, 1984, BANBURY REPORT, V18, P177 SINGH A, 1981, PATHOLOGY, V13, P487 SINGH A, 1996, ULTRASTRUCT PATHOL, V20, P275 SINGH A, 1997, ULTRASTRUCT PATHOL, V21, P143 VOS JG, 1972, TOXICOL APPL PHARM, V23, P563 WASSERMANN D, 1979, TOXICOL EUR RES, V1, P159 WEIBEL ER, 1969, J CELL BIOL, V42, P68 WEISS L, 1988, CELL TISSUE BIOL TXB, P1; NR: 31; TC: 5; J9: TOXICOLOGY; PG: 7; GA: 104FDSource type: Electronic(1
PCB congener 126-induced ultrastructural alterations in the rat liver: a stereological study
No full textHepatocyte cytoplasmic alterations were morphometrically determined in male and female Sprague-Dawley rats fed PCB congener 126 (3,3',4,4',5-pentachlorobiphenyl) in concentrations of 0.1, 1.0, 10, 100 ppb or corn oil in diets for 13 weeks. A dose-dependent increase (P < 0.05) in the volume fraction of smooth endoplasmic reticulum (SER) and mitochondria was measured in the hepatocytes of the females. However, these cells of the male rats contained a significantly greater baseline volume fraction of SER compared to that in the females. Statistical differences were not detected in the volume fractions of rough endoplasmic reticulum, peroxisomes or lipid droplets of the hepatocytes in either the males or females. We conclude the increase in mitochondrial volume was a necessary cellular adaptation to meet the heightened energy demands by the SER to produce the necessary enzymes to detoxify the PCB. Morphometric analysis rather than a descriptive methodology allowed for a more accurate determination of the liver pathology induced by PCB 126. (C) 1999 Elsevier Science Ireland Ltd. All rights reserved.PT: J; CR: AHLBORG UG, 1994, CHEMOSPHERE, V28, P1049 BANDIERA S, 1982, CHEM-BIOL INTERACT, V39, P259 CHU I, 1994, FUND APPL TOXICOL, V22, P457 CLARKE DW, 1984, CAN J PHYSIOL PHARM, V62, P1253 DEVITO MJ, 1993, FUND APPL TOXICOL, V20, P125 GHADIALLY FN, 1988, ULTRASTRUCT PATHOL, V2, P767 GILLETTE DM, 1987, FUND APPL TOXICOL, V8, P4 GILROY C, 1998, TOXICOLOGY, V127, P179 HANSELL MM, 1974, TOXICOL APPL PHARM, V28, P418 HARRIS C, 1984, ARCH ENVIRON CON TOX, V13, P715 HONG CS, 1992, ECOTOX ENVIRON SAFE, V23, P118 KANNAN N, 1989, ARCH ENVIRON CON TOX, V18, P850 KASZA L, 1978, J ENVIRON PATHOL TOX, V1, P241 KIMBROUGH RD, 1972, ARCH ENVIRON HEALTH, V25, P354 LEECE B, 1985, J TOXICOL ENV HEALTH, V16, P379 LIN FS, 1979, ARCH ENV CONTAM TOXI, V88, P321 MACLELLAN K, 1994, HISTOL HISTOPATHOL, V9, P453 MACLELLAN K, 1994, HISTOL HISTOPATHOL, V9, P461 MACLELLAN K, 1994, J SUBMICR CYTOL PATH, V26, P279 MARTUCCI CP, 1993, PHARMACOL THERAPEUT, V57, P237 OKEY AB, 1990, PHARMACOL THERAPEUT, V45, P241 PARKINSON A, 1980, CHEM-BIOL INTERACT, V30, P217 PATTERSON DG, 1994, ENVIRON HEALTH PERSP, V102, P195 PENG J, 1997, TOXICOLOGY, V120, P171 POLAND A, 1977, MOL PHARMACOL, V13, P924 SAFE S, 1990, CRIT REV TOXICOL, V21, P51 SAFE SH, 1994, CRIT REV TOXICOL, V24, P87 SATO T, 1968, J ELECTRON MICROSC, V17, P158 SCHECTER A, 1984, BANBURY REPORT, V18, P177 SHAPIRO BH, 1995, INT J BIOCHEM CELL B, V27, P9 SINGH A, 1981, PATHOLOGY, V13, P487 SINGH A, 1996, ULTRASTRUCT PATHOL, V20, P275 SINGH A, 1997, ULTRASTRUCT PATHOL, V21, P143 SMITH LM, 1990, CHEMOSPHERE, V21, P1063 TANABE S, 1987, ENVIRON POLLUT, V47, P147 TEHSEEN WM, 1992, B ENVIRON CONTAM TOX, V48, P101 VANBIRGELEN APJM, 1994, TOXICOL APPL PHARM, V127, P209 VOS JG, 1972, TOXICOL APPL PHARM, V23, P563 WASSERMANN D, 1979, TOXICOL EUR RES, V1, P159 WEIBEL ER, 1969, J CELL BIOL, V42, P68 WEISS L, 1988, CELL TISSUE BIOL TXB, P1; NR: 41; TC: 4; J9: TOXICOLOGY; PG: 9; GA: 240XASource type: Electronic(1
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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