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Abstract
Two patients who presented with steatohepatitis had acquired partial lipodystrophy. This association has not previously been well documented. A common pathophysiological mechanism in lipodystrophy, obesity-associated nonalcoholic steatohepatitis, and alcoholic liver disease is possible.
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Khafagi F, Wright G, Castles H, Perry-Keene D, Mortimer R. Screening for thyroid malignancy: the role of fine-needle biopsy. Med J Aust 1988; 149:302-3, 306-7. [PMID: 3047534 DOI: 10.5694/j.1326-5377.1988.tb120629.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Cytological examination of the aspirate of fine-needle biopsy is becoming more widely accepted as a screening test for malignancy in thyroid nodules. However, it tends to be used in addition to, rather than instead of, more traditional methods. In this five-year prospective evaluation we performed fine-needle biopsy in 618 euthyroid patients with nodular thyroid enlargement, 86% of whom also underwent radionuclide scans and 55% of whom underwent ultrasound scans. In 19% of patients fine-needle biopsy yielded insufficient material for diagnosis, and in 14% of patients normal follicular cells were found (which indicated that the clinical lesion was not sampled). To date, a histological diagnosis has been obtained in 258 (42%) patients, 44 of whom had malignancies. The results of the radionuclide and ultrasound scans did not alter the odds in favour of the detection of malignancy. The cytological diagnosis of malignancy was falsely-positive in two patients and falsely-negative in four patients (three cases of which probably were sampling errors). If, in addition to overtly-malignant cells, atypical Hürthle cells and follicular neoplasms were considered to be potentially malignant, fine-needle biopsy alone had a sensitivity of 87% and a specificity of 72%. This good accuracy would be reduced by sampling failures, but a policy of operating on all patients with potentially-malignant cells, or on those in whom satisfactory aspirates could not be obtained, would yield high rates of the diagnosis of malignancy and would reduce the number of operations. Our data indicate that the most-appropriate method of screening thyroid nodules for malignancy is fine-needle biopsy without pertechnetate scanning or ultrasound examinations.
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Holt G, Galligan J, Winship J, Roeser P, Mortimer R. Serum thyroglobulin after mantle irradiation for Hodgkin's disease. Clin Endocrinol (Oxf) 1983; 18:605-11. [PMID: 6411392 DOI: 10.1111/j.1365-2265.1983.tb00598.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Thyroid function and serum thyroglobulin levels were studied in 66 subjects whose Hodgkin's disease had been previously treated by cervical, mediastinal and axillary lymph node (mantle) irradiation. Three patients were already undergoing treatment for thyroid disorders (one for primary hypothyroidism, two for Graves' disease) and a fourth was found to have euthyroid Graves' disease. 36 (Group I) of the remaining 62 patients had normal free thyroxine indices, normal basal thyrotrophin (TSH) levels and normal TSH response to thyrotrophin releasing factor (TRH). In 20 patients (Group II) free thyroxine indices were normal but either basal TSH levels were raised or normal basal TSH levels were associated with an exaggerated response to TRH. In 6 patients (Group III) free thyroxine indices were subnormal. Although results of thyroid function tests in group I lay within the normal range, the mean free thyroxine index was significantly lower and mean basal and peak TSH levels were significantly higher than those of a group of 35 normal subjects, indicating mild thyroid hypofunction. Elevated thyroglobulin levels were demonstrated in 11 irradiated subjects (18%). Mean thyroglobulin levels were significantly raised in each of the three groups of irradiated subjects. Significant positive correlations were found between log serum thyroglobulin and log basal TSH (r = 0.453, P less than 0.001) and log peak TSH (r = 0.515, P less than 0.001) levels. Mild thyroid hypofunction is common after mantle irradiation for Hodgkin's disease and raised serum thyroglobulin levels are a sensitive indicator of TSH stimulation of the damaged thyroid gland.
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Mortimer R, White E, Myers S, Lorentz J, Ledbetter S. As I see it... Parents', teenagers' rights clash in 'squeal' rule. THE AMERICAN NURSE 1983; 15:5, 19. [PMID: 6552893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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30
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Ogrydziak D, Bassel J, Mortimer R. Development of the genetic map of the yeast Saccharomycopsis lipolytica. MOLECULAR & GENERAL GENETICS : MGG 1982; 188:179-83. [PMID: 6961277 DOI: 10.1007/bf00332672] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Tetrad and random spore analyses have been used to further develop the genetic map of Saccharomycopsis lipolytica. Mutations in 23 new nuclear genes have been isolated. Eight genes have been located on linkage fragment 1, 4 on fragment 2, 2 on fragment 5 and 3 on fragment 6. Linkage fragments 3 and 4 have been shown to be linked, and this fragment now contains 12 markers. A tentative map of the linkage fragments 1 and 3 is presented (Fig. 1). Markers exhibiting possible centromere linkage have been identified. Interference estimates suggest that there is little interference in S. lipolytica.
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31
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Johnston J, Hilger F, Mortimer R. Variation in frequency of transformation by plasmid YRp7 in Saccharomyces cerevisiae. Gene 1981; 16:325-9. [PMID: 6282699 DOI: 10.1016/0378-1119(81)90089-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Hybrid plasmid YRp7 (Escherichia coli plasmid pBR322 carrying a 1.4-kb yeast fragment containing the TRP1 gene) transforms two related haploid yeast strains (trp1) to Trp+ at frequencies per microgram DNA varying by two orders of magnitude. The diploid cross of these two strains is transformed at a frequency less than that of the low-frequency parent, indicating that high-frequency transformation is inherited in a recessive fashion. Segregant strains of two tetrads of this cross showed intermediate levels of transformability, suggesting the polygenic inheritance of transformation frequency. Levels of variation are changed extensively when frequencies are expressed as transformants per regenerated spheroplast colony, although the inheritance of higher frequency remains clearly recessive. Storage of spheroplast-DNA preparations at 4 degrees C increases the yield of transformants with some strains.
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Harty M, Cerney M, Colson D, Coyne L, Frieswyk S, Johnson SB, Mortimer R. Correlates of change and long-term outcome. An exploratory study of intensively treated hospital patients. Bull Menninger Clin 1981; 45:209-28. [PMID: 7306729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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33
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Mortimer R. The Prior of Butley and the lepers of West Somerton. BULLETIN OF THE INSTITUTE OF HISTORICAL RESEARCH 1980; 53:99-103. [PMID: 11614301 DOI: 10.1111/j.1468-2281.1980.tb01731.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
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34
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Fogel S, Mortimer R, Lusnak K, Tavares F. Meiotic gene conversion: a signal of the basic recombination event in yeast. COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY 1979; 43 Pt 2:1325-41. [PMID: 290446 DOI: 10.1101/sqb.1979.043.01.152] [Citation(s) in RCA: 149] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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35
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Ogrydziak D, Bassel J, Contopoulou R, Mortimer R. Development of genetic techniques and the genetic map of the yeast Saccharomycopis lipolytica. ACTA ACUST UNITED AC 1978. [DOI: 10.1007/bf00271953] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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36
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Goldman J, Matz R, Mortimer R, Freeman R. High elevations of creatine phosphokinase in hypothyroidism. An isoenzyme analysis. JAMA 1977; 238:325-6. [PMID: 577537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In hypothyroidism, slight elevations of serum creatine phosphokinase (CPK) levels are common. In contrast, we describe six hypothyroid patients with extreme elevations (17- to 160-fold) of CPK levels. Enzyme analysis showed only MM isoenzyme in four cases and MM plus trace MB isoenzyme in two patients. Hypothyroidism should, therefore, be considered when elevated CPK levels, even extreme, are found. Isoenzyme analysis in such a case will show primarily an MM pattern, although trace MB fraction can also be seen. This isoenzyme pattern suggests that the sources of the CPK elevations is skeletal muscle.
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Bassel J, Hambright P, Mortimer R, Bearden AJ. Mutant of the yeast Saccharomycopsis lipolytica that accumulates and excretes protorphyrin IX. J Bacteriol 1975; 123:118-22. [PMID: 1141193 PMCID: PMC235697 DOI: 10.1128/jb.123.1.118-122.1975] [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: 12/25/2022] Open
Abstract
The red, water-insoluble pigment excreted by a mutant strain of the yeast Saccharomycopsis lipolytica is show to be protoporphyrin IX. In genetic crosses the red phenotype has the properties characteristic of a defect in a single, recessive nuclear gene. The yield and ease of harvest of protoporphyrin IX from the yeast mutant indicate that this strain or its derivatives may be a valuable source of this substance.
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38
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Bassel J, Mortimer R. Genetic analysis of mating type and alkane utilization in Saccharomycopsis lipolytica. J Bacteriol 1973; 114:894-6. [PMID: 4706194 PMCID: PMC251857 DOI: 10.1128/jb.114.2.894-896.1973] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The mating reaction in Saccharomycopsis lipolytica is shown to be bipolar through the analysis of whole meiotic tetrads. Genetic evidence is provided that alkane metabolism proceeds through a fatty acid or a fatty acid intermediate since several mutants unable to grow on n-tetradecane were also unable to utilize palmitic acid.
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39
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Bassel J, Mortimer R. Genetic order of the galactose structural genes in Saccharomyces cerevisiae. J Bacteriol 1971; 108:179-83. [PMID: 5122803 PMCID: PMC247048 DOI: 10.1128/jb.108.1.179-183.1971] [Citation(s) in RCA: 65] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The galactose structural genes of Saccharomyces cerevisiae were ordered by determining the genotypes of mitotic and meiotic recombinants from crosses heterozygous for the three genes. The most probable order is centromere-gal7-gal10-gal1. Nonreciprocal recombination was more frequent than reciprocal exchange, and both mitotic and meiotic co-conversions involving mutant sites in all three genes were observed.
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Abstract
Nutritional requirements were introduced into wild-type, heterothallic strains of Candida lipolytica by exposing the cells to X rays. Complementing hybrids were recovered from mixtures of the auxotrophic strains, and genetic recombination was observed in individually isolated ascospores from the hybrid strains.
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41
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Powell LW, Mortimer R, Harris OD. Cirrhosis of the liver. A comparative study of the four major aetiological groups. Med J Aust 1971; 1:941-50. [PMID: 5314134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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42
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Powell LW, Mortimer R, Harris OD. CIRRHOSIS OF THE LIVER A COMPARATIVE STUDY OF THE FOUR MAJOR ÆTIOLOGICAL GROUPS. Med J Aust 1971. [DOI: 10.5694/j.1326-5377.1971.tb87962.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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43
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Shields LM, Sansoy OM, Mortimer R. Directional trends in serum uric acid and lipids in 865 Spnnish-and Anglo-American men and women, age 20-79 years. SOUTHWESTERN MEDICINE 1971; 52:54-57. [PMID: 5554571] [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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44
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Shields LM, Sansoy OM, Mortimer R. Directional trends in serum uric acid and lipids in 865 Spanish-and Anglo-American men and women, age 20-79 years. SOUTHWESTERN MEDICINE 1971; 52:54-7. [PMID: 5145070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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45
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Myers DK, Tribe TA, Mortimer R. On the Radiation-Induced Reaction of Iodoacetamide with Albumin and with the Erythrocyte Membrane. Radiat Res 1969. [DOI: 10.2307/3573011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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46
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Myers DK, Tribe TA, Mortimer R. On the radiation-induced reaction of iodoacetamide with albumin and with the erythrocyte membrane. Radiat Res 1969; 40:580-7. [PMID: 5352957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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47
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48
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49
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Johnston JR, Mortimer R. Influence of temperature on recombination in yeast. Heredity (Edinb) 1967; 22:297-303. [PMID: 5235105 DOI: 10.1038/hdy.1967.33] [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: 01/14/2023] Open
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50
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Harris RJ, Dougherty RM, Biggs PM, Payne LN, Goffe AP, Churchill AE, Mortimer R. Contaminant viruses in two live virus vaccines produced in chick cells. J Hyg (Lond) 1966; 64:1-7. [PMID: 4286627 PMCID: PMC2134684 DOI: 10.1017/s0022172400040286] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Samples of yellow-fever vaccine prepared from homogenized chick embryos, and of an experimental measles vaccine prepared from chick embryo cells, have each been shown to contain a contaminant virus similar in properties to an avian leukosis virus. Young adult males injected with the yellow-fever vaccine did not develop neutralizing antibodies for Rous sarcoma virus.
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