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Holly J, Harter P, Ataseven B, Moubarak M, Schwameis R, Heikaus S, Concin N, Rhiem K, Denkert C, Heitz F. HRD-Testung und BRCA1/2-Keimbahntestung in der
klinischen Routine bei Patientinnen mit primärem
Ovarialkarzinom. Geburtshilfe Frauenheilkd 2022. [DOI: 10.1055/s-0042-1746158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- J Holly
- Evangelische Kliniken Essen Mitte, Klinik für
Gynäkologie und Gynäkologische Onkologie, Essen,
Deutschland
| | - P Harter
- Evangelische Kliniken Essen Mitte, Klinik für
Gynäkologie und Gynäkologische Onkologie, Essen,
Deutschland
| | - B Ataseven
- Evangelische Kliniken Essen Mitte, Klinik für
Gynäkologie und Gynäkologische Onkologie, Essen,
Deutschland
- Abteilung für Geburtshilfe und Gynäkologie,
Universitätsklinikum, LMU München, Deutschland
| | - M Moubarak
- Evangelische Kliniken Essen Mitte, Klinik für
Gynäkologie und Gynäkologische Onkologie, Essen,
Deutschland
| | - R Schwameis
- Evangelische Kliniken Essen Mitte, Klinik für
Gynäkologie und Gynäkologische Onkologie, Essen,
Deutschland
- Abteilung für allgemeine Gynäkologie und
gynäkologische Onkologie, Universitätsklinik für
Frauenheilkunde, MedUni Wien, Österreich
| | - S Heikaus
- Evangelische Kliniken Essen Mitte, Zentrum für Pathologie,
Essen, Deutschland
| | - N Concin
- Evangelische Kliniken Essen Mitte, Klinik für
Gynäkologie und Gynäkologische Onkologie, Essen,
Deutschland
- Universitätsklinik für Frauenheilkunde, MedUni
Innsbruck, Österreich
| | - K Rhiem
- Zentrum Familiärer Brust- und Eierstockkrebs der
Universitätsklinik Köln, Deutschland
| | - C Denkert
- Institut für Pathologie, Philipps-Universität Marburg
und Universitätsklinik Marburg (UK-GM) Deutschland)
| | - F Heitz
- Evangelische Kliniken Essen Mitte, Klinik für
Gynäkologie und Gynäkologische Onkologie, Essen,
Deutschland
- Klinik für Gynäkologie mit dem Center für
Onkologische Operative Therapie, Charité Campus, Virchowklinikum,
Charité- Universitätsmedizin Berlin, Freie Universität
Berlin, Humboldt Universität zu Berlin, Berlin Institut of Health,
Deutschland
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Holly J, Gindlhuber K, Reimer D, Marth C, Aigner F, Zeimet AG. Die Rolle des suspekten Lymphknotens im Herzzwerchfellwinkels beim Ovarialkarzinom. Geburtshilfe Frauenheilkd 2015. [DOI: 10.1055/s-0035-1555076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Holly J, Hamilton D, Mallin M, Black K, Robbins R, Davis V, Barton E, Madsen T. 40 Prospective Evaluation of the Use of the Thrombolysis in Myocardial Infarction (TIMI) Score as a Risk Stratification Tool for Chest Pain Patients Admitted to an Emergency Department Observation Unit. Ann Emerg Med 2011. [DOI: 10.1016/j.annemergmed.2011.06.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Burton A, Martin R, Holly J, Hamdy F, Neal D, Donovan J, Tilling K. P2-34 Association of anthropometric and lifestyle factors with prostate specific antigen (PSA) trajectories in men with localised prostate cancer undergoing active monitoring. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976h.70] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Murphy R, Baptista J, Holly J, Umpleby AM, Ellard S, Harries LW, Crolla J, Cundy T, Hattersley AT. Severe intrauterine growth retardation and atypical diabetes associated with a translocation breakpoint disrupting regulation of the insulin-like growth factor 2 gene. J Clin Endocrinol Metab 2008; 93:4373-80. [PMID: 18728168 DOI: 10.1210/jc.2008-0819] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
CONTEXT IGF-II is an imprinted gene (predominantly transcribed from the paternally inherited allele), which has an important role in fetal growth in mice. IGF2 gene expression is regulated by a complex system of enhancers and promoters that determine tissue-specific and development-specific transcription. In mice, enhancers of the IGF2 gene are located up to 260 kb telomeric to the gene. The role of IGF-II in humans is unclear. OBJECTIVE A woman of short adult stature (1.46 m, -3 sd score) born with severe intrauterine growth retardation (1.25 kg at term, -5.4 SD score) and atypical diabetes diagnosed at the age of 23 yr had a balanced chromosomal translocation t(1;11) (p36.22; p15.5). We hypothesized that her phenotype resulted from disruption of her paternally derived IGF2 gene because her daughter who inherited the identical translocation had normal birth weight. DESIGN Both chromosomal break points were identified using fluorescent in situ hybridization. Sequence, methylation, and expression of the IGF2 gene was examined. Hyperinsulinemic, euglycemic clamp with glucose tracers and magnetic resonance imaging of the thorax, abdomen, and pelvis were performed. RESULTS The 11p15.5 break point mapped 184 kb telomeric of the IGF2 gene. Microsatellite markers confirmed paternal origin of this chromosome. IGF2 gene sequence and methylation was normal. IGF2 gene expression was reduced in lymphoblasts. Clamp studies showed marked hepatic and total insulin resistance. Massive excess sc fat was seen on magnetic resonance imaging despite slim body mass index (21.1 kg/m2). CONCLUSIONS A break point 184 kb upstream of the paternally derived IGF2 gene, separating it from some telomeric enhancers, resulted in reduced expression in some mesoderm-derived adult tissues causing intrauterine growth retardation, short stature, lactation failure, and insulin resistance with altered fat distribution.
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Affiliation(s)
- R Murphy
- Institute of Clinical and Biomedical Sciences, Peninsula Medical School, Barrack Road, Exeter EX2 5DW, United Kingdom
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Palles C, Johnson N, Coupland B, Taylor C, Carvajal J, Holly J, Fentiman IS, dos Santos Silva I, Ashworth A, Peto J, Fletcher O. Identification of genetic variants that influence circulating IGF1 levels: a targeted search strategy. Hum Mol Genet 2008; 17:1457-64. [DOI: 10.1093/hmg/ddn034] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Sandhu J, Ben-Shlomo Y, Cole TJ, Holly J, Davey Smith G. The impact of childhood body mass index on timing of puberty, adult stature and obesity: a follow-up study based on adolescent anthropometry recorded at Christ's Hospital (1936-1964). Int J Obes (Lond) 2006; 30:14-22. [PMID: 16344844 DOI: 10.1038/sj.ijo.0803156] [Citation(s) in RCA: 162] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE To examine the impact of childhood body mass index (BMI) on timing of puberty, adult stature and obesity. DESIGN A retrospective school-based cohort follow-up study. SUBJECTS A total of 1520 men born between 1927 and 1956 with serial height and weight measurements from the age of 9 to 18, followed up in adulthood at a mean age of 63 years. MEASUREMENTS Prepubertal (child) BMI; age at peak height velocity (APHV); adult leg length, waist and hip circumference (self-reported), and height and weight (measured). RESULTS Boys with a higher childhood BMI tended to have an earlier puberty (per s.d. increase in child BMI: -0.31 years, 95% confidence interval (CI): -0.23 to -0.39, P < 0.001). Childhood BMI correlated strongly and positively with adult adiposity, as measured by BMI (1.24 kg/m(2), 95% CI: 1.04-1.45, P < 0.001), waist (1.94 cm, 95% CI: 1.50-2.37, P < 0.001) and hip (1.91 cm, 95% CI: 1.55-2.28, P < 0.001). It correlated inversely with leg length (-0.40 cm, 95% CI: -0.68 to -0.12, P = 0.005), but not significantly with height or trunk length. Boys with a later puberty tended to be taller (per s.d. increase in APHV: 0.57 cm, 95% CI: 0.17-0.97, P = 0.006) and less adipose as adults (-0.55 kg/m(2), 95% CI: -0.33 to -0.77, P < 0.001). CONCLUSION The long-term consequences of childhood obesity into adulthood are well known, but the potential impact on early pubertal maturation is less well appreciated. The factors that contribute to the onset and persistence of childhood obesity require more public health focus.
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Affiliation(s)
- J Sandhu
- Department of Social Medicine, University of Bristol, UK.
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Affiliation(s)
- C Perks
- Division of Surgery, Department of Hospital Medicine, Bristol Royal Infirmary, Bristol, UK.
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Ben-Shlomo Y, Holly J, McCarthy A, Savage P, Davies D, Gunnell D, Davey Smith G. An investigation of fetal, postnatal and childhood growth with insulin-like growth factor I and binding protein 3 in adulthood. Clin Endocrinol (Oxf) 2003; 59:366-73. [PMID: 12919161 DOI: 10.1046/j.1365-2265.2003.01857.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
OBJECTIVE Weight at birth and adult height are positively associated with cancer risk. These patterns may be mediated by the insulin-like growth factor (IGF) axis. We have examined whether pre- and postnatal growth patterns have a long-term influence on adult IGF-I and IGFBP-3 levels. DESIGN A follow-up study of a randomized controlled trial of milk supplementation in pregnancy and childhood. SUBJECTS A total of 951 individuals took part in a study of diet and growth in South Wales between 1972 and 1974 followed up from birth until their mid-20s. MEASUREMENTS Anthopometric measures at birth, postnatally up to 5 years of age and in adulthood, and serum measures of IGF-I and IGF-I to IGFBP-3 ratio at mean age of 25 years. RESULTS A total of 63 subjects (70%) provided blood for analysis. We found no association between birth dimensions and adult IGF-I. Subjects who exhibited 'catch-down growth' had lower IGF-I levels (P-value for trend 0.02). Adult height was positively related to IGF-I, for every one standard deviation increase in adult height, IGF-I increased by 3.75 ng/dl (95% CI 0.46-7.08, P = 0.03). Adiposity was inversely associated with the IGF-I and IGF-I to IGFBP-3 ratio and positively associated with IGFBP-3. The strength of the associations increased with age. Downward centile crossing at any time in childhood was associated with lower IGF-I whilst the highest levels were observed in subjects who were tall throughout their early life course. Adult height remained a significant predictor of IGF-I even after adjustment for earlier growth. CONCLUSIONS Our results indicate that IGF-I levels in early adulthood are associated with patterns of childhood growth as well as adult stature and adiposity. These associations suggest the IGFs may contribute to anthropometric associations with cancer risk.
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Affiliation(s)
- Y Ben-Shlomo
- Department of Social Medicine, University of Bristol, Bristol Royal Infirmary, Bristol, UK.
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Lemmey A, Maddison P, Breslin A, Cassar P, Hasso N, McCann R, Whellams E, Holly J. Association between insulin-like growth factor status and physical activity levels in rheumatoid arthritis. J Rheumatol 2001; 28:29-34. [PMID: 11196538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
OBJECTIVE To determine if the altered insulin-like growth factor (IGF) status in rheumatoid arthritis (RA) is due to inflammation, altered body composition, or lack of exercise. METHODS Subjects included 73 patients with RA, 54 patients with other rheumatic diseases, both inflammatory and noninflammatory, and 28 healthy, physically active controls. Serum levels of IGF-I, IGF-II, and IGF binding protein-3 (IGFBP-3) were measured by radioimmunoassay. Body composition was estimated by bioelectrical impedance analysis, and habitual exercise level approximated by questionnaire. Statistical analysis was performed by 2 and 3 way ANOVA and moderated hierarchical regression. RESULTS Serum IGF-I (p < 0.001), IGFBP-3 (p < 0.001), and the BP-3:total IGF molar ratio (p < 0.001) were depressed in both patient groups relative to controls. In contrast, IGF-II levels were depressed only in patients with RA (p < 0.01). Differences in the IGF proteins between patients and controls could not be attributed to inflammation. Habitual exercise level, but not body composition, was shown to be a significant predictor for IGF-I, IGFBP-3, and BP-3:total IGF molar ratio (p < 0.001). CONCLUSION Our results indicate that the reduction in circulating IGF proteins observed in our patients is more related to their sedentary lifestyle than to the inflammatory process. This conclusion is in agreement with reports that show that highly active individuals typically exhibit higher levels of systemic IGF proteins than age matched sedentary controls.
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Affiliation(s)
- A Lemmey
- School of Sport, Health and Exercise Sciences, University of Wales, Bangor, UK
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Smith GD, Gunnell D, Holly J. Cancer and insulin-like growth factor-I. A potential mechanism linking the environment with cancer risk. BMJ 2000; 321:847-8. [PMID: 11021847 PMCID: PMC1118665 DOI: 10.1136/bmj.321.7265.847] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Jefferson K, Dwivedi A, Persad R, Holly J. Regulatory mechanisms in prostate cancer. Lancet 2000; 355:1100-1. [PMID: 10744117 DOI: 10.1016/s0140-6736(05)72223-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Affiliation(s)
- J Holly
- University Division of Surgery, Bristol Royal Infirmary, UK
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Abstract
BACKGROUND & AIMS The protein catabolic state of cirrhosis is associated with severe growth hormone (GH) resistance, with low levels of insulin-like growth factor (IGF)-I and its major binding protein (IGFBP)-3. The aim of this study was to conduct a randomized, double-blind, placebo-controlled pilot study of GH therapy in 20 cirrhotic patients to assess the reversibility of GH resistance and subsequent impact on protein economy and safety. METHODS Patients were treated with GH (0.25 IU/kg body wt) or placebo for 7 days. Serum levels of GH, IGF-I, IGFBP-3, and insulin were measured by radioimmunoassay and 24-hour urinary nitrogen by the Kjeldahl technique. RESULTS IGF-I levels increased only in the GH-treated group (mean, 69.2 +/- SE 7.0 to 170.6 +/- 48.8 ng/mL; P < 0.05) together with IGFBP-3 (1.65 +/- 0.3 to 2.94 +/- 0.6 mg/L; P < 0.005). Cumulative nitrogen balance similarly improved only in the GH group (2.87-24.16 g; P < 0.05). No significant side effects of GH were observed. CONCLUSIONS GH therapy can overcome the GH resistance of cirrhosis. The resulting improvement in nitrogen economy and possible influences on clinical outcomes will need to be confirmed in controlled studies of longer duration.
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Affiliation(s)
- A Donaghy
- Institute of Liver Studies, King's College Hospital and King's College School of Medicine and Dentistry, London, England
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Taylor AM, Bush A, Thomson A, Oades PJ, Marchant JL, Bruce-Morgan C, Holly J, Ahmed L, Dunger DB. Relation between insulin-like growth factor-I, body mass index, and clinical status in cystic fibrosis. Arch Dis Child 1997; 76:304-9. [PMID: 9166020 PMCID: PMC1717156 DOI: 10.1136/adc.76.4.304] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVES Despite improved nutrition and intensive treatment, subjects with cystic fibrosis have difficulty in maintaining anabolism during intercurrent infections, which can result in reduced body mass index and impaired skeletal growth. Insulin-like growth factor-I (IGF-I) and its binding protein IGFBP3 are sensitive to changes in nutritional status. The aim of this study was to determine the relation between circulating concentrations of these peptides, body mass index, and clinical status in cystic fibrosis. METHODS Serum concentrations of IGF-I and IGFBP3 were measured in 197 subjects (108 males, 89 females; mean age 9.69 years, range 0.41-17.9 years) and these data were analysed with respect to body mass index, pubertal stage, and clinical status as assessed by Shwachman score and forced expiratory volume in one second (FEV1). RESULTS The mean height SD score of the children studied was -0.2 (SD 1.14) and the body mass index SD score -0.26 (1.4). The body mass index SD score declined with increasing age (r = -0.18) and paralleled changes in IGF-I concentrations, which also declined. The IGF-I SD score (calculated from control data) correlated with age (r = -0.53). The abnormalities were most obvious during late puberty, when IGF-I and IGFBP3 concentrations were significantly reduced compared with those in control subjects matched for pubertal stage. The IGF-I SD score correlated with height SD score (r = 0.14) and the decline in IGF-I concentrations with the fall in body mass index SD score (r = 0.42). IGF-I SD scores also correlated with the Shwachman score (r = 0.33) and FEV1 (r = 0.17). CONCLUSIONS The close relation between declining IGF-I and IGFBP3 concentrations and body mass index in patients with cystic fibrosis may simply reflect poor nutritional status and insulin hyposecretion. Nevertheless, IGF-I deficiency could also contribute towards the catabolism observed in these patients, and IGF-I SD scores correlated with other measures of clinical status such as the Shwachman score and FEV1.
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Affiliation(s)
- A M Taylor
- Department of Paediatrics, John Radcliffe Hospital, Oxford
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Ross RJ, Chew SL, D'Souza Li L, Yateman M, Rodriguez-Arnao J, Gimson A, Holly J, Camacho-Hubner C. Expression of IGF-I and IGF-binding protein genes in cirrhotic liver. J Endocrinol 1996; 149:209-16. [PMID: 8708531 DOI: 10.1677/joe.0.1490209] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The liver plays a central role in the IGF-I axis producing the majority of circulating hormone and some of its binding proteins (IGFBPs). Cirrhosis of the liver is characterised by changes in IGF-I and IGFBPs associated with liver fibrosis and regeneration. We have studied steady state levels of mRNA for the genes in the IGF-I axis in normal and cirrhotic human liver, localised the most highly expressed gene, IGFBP-1, and measured circulating IGFBP-3 by radioimmunoassay (RIA), IGFBP-2 and IGFBP-3 by Western ligand blot (WLB), and protease activity for IGFBP-3 in cirrhotic patients. Messenger RNA for IGF-I, IGFBP-1, IGFBP-2, and IGFBP-3 was detectable by Northern blotting in normal and cirrhotic liver although there was considerable variation in expression. IGFBP-2 and IGFBP-3 tended to be more highly expressed in cirrhotic liver and IGFBP-1 was more highly expressed in normal liver, although there were no significant differences. In normal liver, in situ hybridisation localised IGFBP-1 to hepatocytes. In cirrhotic liver the regenerating nodules showed expression of IGFBP-1 while there was none in fibrotic tissue. Circulating IGFBP-3 levels were low as measured by RIA and WLB but protease activity was only found in one patient. IGFBP-2 levels, assessed by WLB, were similar to the normal serum pool. Our data show that key mRNAs involved in the IGF-I axis continue to be expressed in cirrhotic liver despite end stage liver disease. The low levels of IGFBP-3 do not appear to be due to reduced gene transcription or increased protease activity.
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Affiliation(s)
- R J Ross
- Department of Medicine, University of Sheffield, UK
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Donaghy A, Ross R, Gimson A, Hughes SC, Holly J, Williams R. Growth hormone, insulinlike growth factor-1, and insulinlike growth factor binding proteins 1 and 3 in chronic liver disease. Hepatology 1995; 21:680-8. [PMID: 7533122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/06/2022]
Abstract
The liver is the major source of circulating insulinlike growth factor-I (IGF-I) and has been suggested as a major source of at least two of the major binding proteins that modify its bioavailability. We aimed to assess the direct effects of liver dysfunction on serum levels of IGF-1 and its major binding proteins by measuring fasting levels of growth hormone, IGF-1, IGFBP-1, IGFBP-3, insulin, C peptide, and glucose in 35 patients with cirrhosis and during an oral glucose tolerance test in 16 of those patients. Serum levels of growth hormone (GH) were high in the patients: median, 12.0 mU/L (range, 1 to 87) compared with normals, 0.95 mU/L (0.1 to 20) (P < .0005) and serum IGF-1 levels were low: 81 ng/mL (38 to 153) versus 193 ng/mL (151 to 235) (P < .0001). Serum IGFBP-3 levels were low in the patients: 1.59 mg/L (0.46 to 4.43) compared with normals, 5.41 (4.34 to 6.11) (P < .0001), and there was a significant negative correlation between IGFBP-3 levels and Childs Pugh score (r = .63 P < .0001). Fasting IGFBP-1 levels were significantly higher in the patients 31 ng/mL (11 to 92) than normals, 14 (7 to 20) (P < .0001). There was no correlation between fasting insulin and IGFBP-1 levels despite high fasting insulin levels. A decrease in IGFBP-1 levels was seen during the glucose tolerance test (GTT) in all patients. In conclusion, there are significant changes in the levels of two of the major IGF-1 binding proteins that may further limit the bioavailability of already low circulating IGF-1 levels. Substrate availability appears to be a stronger influence on fasting IGFBP-1 levels than does insulin, and the close correlation of IGFBP-3 with liver function indicates a dominant regulatory role of the hepatocyte.
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Affiliation(s)
- A Donaghy
- Institute of Liver Studies, King's College Hospital and Medical School, London, United Kingdom
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Abstract
OBJECTIVE Insulin-like growth factor-I is the mediator of many of the actions of GH and is a potent metabolic regulator. Recombinant IGF-I (rhIGF-I) is of potential value in the treatment of syndromes associated with either GH or insulin resistance. This study was designed to assess the effects of subcutaneous (s.c.) rhIGF-I on anterior pituitary function. DESIGN Double-blind, placebo controlled, randomized cross-over study. The interval between investigations was 2 weeks. SUBJECTS Twelve normal volunteers received on one occasion a single s.c. dose of 40 micrograms/kg rhIGF-I and on the other, placebo. MEASUREMENTS Circulating levels were measured, over 24 hours, of GH, LH, FSH, PRL, TSH, cortisol, ACTH, glucose, IGF-I, IGF-II, insulin, C-peptides; IGF binding proteins by Western ligand blotting; total IGF bioactivity using FRTL-5 thyroid cells; and glucose by the glucose oxidase method. RESULTS Recombinant IGF-I increased AUC for plasma IGF-I, measured by radioimmunoassay (rhIGF-I mean 7065 +/- SEM 33 vs 3895 +/- 204 micrograms/l, P < 0.0001) and IGF bioactivity (22.5 +/- 3.4 vs 14.2 +/- 1.8 U/ml, P < 0.001) but plasma IGF-II fell (9308 +/- 403 vs 11052 +/- 451 micrograms/l, P < 0.0001). There was no biochemical or clinical evidence of hypoglycaemia and no difference in mean glucose levels. No difference existed in AUC for GH, LH, FSH, ACTH and cortisol between rhIGF-I and placebo; additionally, pulse number and amplitude for GH and LH were unaffected. TSH fell following rhIGF-I (33.0 +/- 3.36 vs 42.5 +/- 5.98 mU h/l, P = 0.01). Both mean plasma C-peptide (0.73 +/- 0.06 vs 0.91 +/- 0.05 nmol/l, P = 0.03), and insulin (10.81 +/- 1.02 vs 15.36 +/- 1.18 mU/l, P = 0.03) were lower following rhIGF-I. There was no change in IGFBPs. CONCLUSION A single injection of 40 micrograms/kg of subcutaneous rhIGF-I does not cause hypoglycaemia. IGF bioactivity was increased without inhibition of GH secretion. The only change observed in anterior pituitary function was a fall in plasma TSH.
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Affiliation(s)
- P J Trainer
- Department of Endocrinology, St Bartholomew's Hospital, London, UK
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Abstract
Cirrhosis of the liver, a condition characterised by hepatocyte regeneration, is also associated with elevated insulin levels and insulin resistance. In animal models hepatic regeneration is associated with increased IGFBP-1 gene expression. Insulin is known to be an inhibitor of IGFBP-1 gene expression and circulating insulin levels in man demonstrate a negative correlation with IGFBP-1 levels. To further our understanding of the regulation of IGFBP-1 in cirrhosis we have studied steady state levels of IGFBP-1 mRNA in human liver from three groups of patients: Group 1, tissue obtained at the time of harvesting donor liver for orthotopic liver transplantation (n = 4); group 2, patients undergoing major liver resection with no histological evidence of chronic liver disease (n = 4); and group 3, patients undergoing orthotopic transplantation for chronic liver failure (n = 9). Simultaneous samples of serum were taken at the time of surgery in some patients and in these patients IGFBP-1 mRNA levels were related to circulating levels of IGFBP-1 and insulin. IGFBP-1 mRNA was detectable in all the human liver samples with the greatest levels seen from the normal livers of group 2 patients. Insulin levels were elevated in the cirrhotic group 3 patients compared to a normal range as were IGFBP-1 levels. There was no relationship between circulating levels of IGFBP-1 and IGFBP-1 gene expression. In conclusion, IGFBP-1 mRNA is present in human adult liver at the time of surgery and also in cirrhotic liver despite high levels of insulin suggesting that there are factors other than insulin regulating IGFBP-1 gene expression.
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Affiliation(s)
- R J Ross
- Dept of Endocrinology, St Bartholomew's Hospital, London
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Cheetham TD, Clayton KL, Taylor AM, Holly J, Matthews DR, Dunger DB. The effects of recombinant human insulin-like growth factor I on growth hormone secretion in adolescents with insulin dependent diabetes mellitus. Clin Endocrinol (Oxf) 1994; 40:515-22. [PMID: 8187319 DOI: 10.1111/j.1365-2265.1994.tb02492.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVE It has been proposed that low IGF-I levels and reduced IGF-I bioactivity may lead to elevated GH levels in adolescents with insulin dependent diabetes (IDDM). We have therefore studied the effects of human recombinant insulin-like growth factor I (rhIGF-I) administration on GH levels and GH secretion in adolescents with IDDM. PATIENTS Nine late pubertal adolescents (four male and five female) with IDDM. DESIGN A double-blind placebo controlled study of rhIGF-I administered subcutaneously in a dose of 40 micrograms/kg body weight at 1800 h. MEASUREMENTS IGF-I and GH concentrations were measured at regular intervals throughout the study. Twenty-two hour GH secretory rates were calculated by deconvolution analysis. Overnight GH profiles were analysed by distribution analysis, and Fourier transformations were performed on both overnight GH concentrations and GH secretory rates. RESULTS Mean IGF-I levels over the 22-hour study period were significantly elevated following rhIGF-I administration (350 +/- 26 vs 205 +/- 21 micrograms/l (mean +/- SEM), P < 0.01). Mean 22-hour GH levels were reduced following rhIGF-I administration (19.4 +/- 4.0 compared with 33.6 +/- 5.8 mU/l; P = 0.01). Distribution analysis demonstrated that the reduction in GH levels was due to changes in the proportion of values at both high and low concentrations. Deconvolution analysis also revealed a significant overall reduction in GH secretory rate following IGF-I administration (1.81 +/- 0.30 vs 2.98 +/- 0.47 mU/min, P = 0.01) which was still apparent during the final 5.5 hours of the study period (1.51 +/- 0.30 vs 2.76 +/- 0.61 mU/min, P = 0.02). The dominant periodicity of GH secretory episodes as determined by Fourier transformation was between 120 and 180 minutes after both IGF-I and placebo. CONCLUSIONS In late pubertal adolescents with IDDM the rise in IGF-I levels following rhIGF-I administration in a subcutaneous dose of 40 micrograms/kg body weight leads to a significant reduction in GH levels and GH secretory rate. The reduction in GH secretion is due to changes in pulse amplitude rather than frequency. A reduction in GH secretion was apparent at the beginning and also towards the end of the 22-hour study period.
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Affiliation(s)
- T D Cheetham
- Department of Paediatrics John Radcliffe Hospital, Headington, Oxford, UK
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Cheetham TD, Jones J, Taylor AM, Holly J, Matthews DR, Dunger DB. The effects of recombinant insulin-like growth factor I administration on growth hormone levels and insulin requirements in adolescents with type 1 (insulin-dependent) diabetes mellitus. Diabetologia 1993; 36:678-81. [PMID: 8359587 DOI: 10.1007/bf00404081] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Type 1 (insulin-dependent) diabetes mellitus in adolescence is associated with reduced levels of insulin-like growth factor I, elevated growth hormone concentrations and insulin resistance. In order to determine whether restoring insulin-like growth factor I levels to normal might lead to a reduction in growth hormone levels and insulin requirements, we undertook a double-blind placebo controlled study of a single s.c. dose of recombinant insulin-like growth factor I (40 micrograms/kg body weight) in nine late pubertal subjects with Type 1 diabetes. After administration of placebo or insulin-like growth factor I at 18.00 hours, a variable rate insulin infusion was used to maintain euglycaemia overnight. Plasma insulin-like growth factor I, growth hormone, free insulin, and intermediate metabolite concentrations were monitored throughout the study. Recombinant insulin-like growth factor I led to a rise in plasma concentrations which reached a peak at 5.5 h (413.1 +/- 28.2 ng/ml, mean +/- SEM). Mean growth hormone levels between 20.00 and 08.00 hours were significantly reduced after recombinant insulin-like growth factor I (19.4 +/- 4.0 compared with 33.6 +/- 5.8 mU/l; p = 0.01), as were the insulin requirements for euglycaemia (0.25 +/- 0.02 compared with 0.31 +/- 0.04 mU.kg-1.min-1; p = 0.03). Plasma free insulin levels were lower after recombinant insulin-like growth factor I administration (31.9 +/- 2.7 compared with 67.9 +/- 16.0 mU/l; p = 0.001) but no significant differences in ketone or lactate levels were detected.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- T D Cheetham
- Department of Paediatrics, John Radcliffe Hospital, Oxford, UK
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Jenkins PJ, Ibanez-Santos X, Holly J, Cotterill A, Perry L, Wolman R, Harries M, Grossman A. IGFBP-1: a metabolic signal associated with exercise-induced amenorrhoea. Neuroendocrinology 1993; 57:600-4. [PMID: 7690116 DOI: 10.1159/000126413] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Severe exercise in young females is a potent cause of menstrual irregularity, although the exact pathogenesis is currently unknown. We performed a cross-sectional endocrine and metabolic analysis of a group of elite athletes and dancers in order to establish which variable, if any, was specifically associated with changes in menstruation. By using a step-wise discriminant analysis, two independent predictors, elevated serum cortisol and insulin-like growth factor binding protein 1 (IGFBP-1) levels, were found to account for the majority (67%) of the variance. IGFBP-1 is a hepatic protein which is acutely and inversely regulated by insulin, and is thought to modulate the peripheral actions of IGF-1. While the change in serum cortisol may reflect activation of central stress pathways, these findings suggest for the first time that there is a second peripheral signal, IGFBP-1, which may relate the availability of metabolic fuels to the control of reproduction.
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Affiliation(s)
- P J Jenkins
- Department of Endocrinology, St. Bartholomew's Hospital, London, UK
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Trainer PJ, Holly J, Medbak S, Besser GM. Effect of recombinant insulin-like growth factor I on anterior pituitary function in healthy volunteers. Acta Paediatr Suppl 1993; 388:38; discussion 39. [PMID: 7687169 DOI: 10.1111/j.1651-2227.1993.tb12836.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- P J Trainer
- Department of Endocrinology, St Bartholomew's Hospital, West Smithfield, London, UK
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Schulster D, Holly J. 2nd international symposium on insulin-like growth factors (IGFs)/somatomedins 12-16 Jan 1991 San Francisco California. Growth Regul 1991; 1:83. [PMID: 1842564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- D Schulster
- National Institute for Biological Standards & Control, Potters Bar, Herts, UK
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MacKay VL, Welch SK, Insley MY, Manney TR, Holly J, Saari GC, Parker ML. The Saccharomyces cerevisiae BAR1 gene encodes an exported protein with homology to pepsin. Proc Natl Acad Sci U S A 1988; 85:55-9. [PMID: 3124102 PMCID: PMC279480 DOI: 10.1073/pnas.85.1.55] [Citation(s) in RCA: 165] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Saccharomyces cerevisiae a cells secrete an extracellular protein, called "barrier" activity, that acts as an antagonist of alpha factor, the peptide mating pheromone produced by mating-type alpha cells. We report here the DNA sequence of BAR1, the structural gene for barrier activity. The deduced primary translation product of 587 amino acids has a putative signal peptide, nine potential asparagine-linked glycosylation sites, and marked sequence similarity of the first two-thirds of the protein with pepsin-like proteases. Barrier activity was abolished by in vitro mutation of an aspartic acid predicted from this sequence homology to be in the active site. Therefore, barrier protein is probably a protease that cleaves alpha factor. The sequence similarity suggests that the first two-thirds of the barrier protein is organized into two distinct structural domains like those of the pepsin-like proteases. However, the BAR1 gene product has a third carboxyl-terminal domain of unknown function; deletion of at least 166 of the 191 amino acids of this region has no significant effect on barrier activity.
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O'Brien JD, Thompson DG, Burnham WR, Holly J, Walker E. Action of centrally mediated autonomic stimulation on human upper gastrointestinal transit: a comparative study of two stimuli. Gut 1987; 28:960-9. [PMID: 3666564 PMCID: PMC1433154 DOI: 10.1136/gut.28.8.960] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Two well established experimental stressors, hand immersion in cold water, and mental stimulation with dichotomous listening, were applied to 37 normal subjects after the ingestion of a standard meal. Orocaecal transit was measured by serial exhaled breath hydrogen sampling. Cold water significantly delayed transit compared with warm water control (warm water 71.8 +/- 3.6 mins v cold water 93.2 +/- 5.7 mins p less than 0.01), with significant rises in blood pressure pulse rate perceived discomfort and plasma catecholamines. In contrast mental stimulation was unaccompanied by any change in transit (control; 67.4 +/- 4.7 v test 64.3 +/- 5.3 mins p greater than 0.1) despite a significant rise in pulse rate, skin conductance and plasma catecholamines. Repeated cold water immersion studies in eight individuals produced consistent orocaecal transit and autonomic responses, whereas mental stimulation showed reduced autonomic responses on repeat testing, suggesting that tolerance to the stimulus had occurred. The results of these studies show stimulus specific gastrointestinal response patterns to autonomic stimuli, and appear to have important implications for the design of future studies of human gastrointestinal autonomic physiology and for the investigation of patients with stress related gut dysfunction.
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Affiliation(s)
- J D O'Brien
- Department of Gastroenterology, London and Oldchurch Hospital
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Abstract
The Saccharomyces cerevisiae STE2 gene, which is required for pheromone response and conjugation specifically in mating-type a cells, was cloned by complementation of the ste2 mutation. Transcription of STE2 is repressed by the MAT alpha 2 gene product, so that the 1.4-kilobase STE2 RNA is detected only in a or mat alpha 2 strains, not in alpha or a/alpha cells. However, STE2 RNA levels are also increased by the mating pheromone alpha-factor and decreased in strains bearing mutations in the nonspecific STE4 gene. Regulation of STE2 expression in a cells is therefore achieved by several mechanisms.
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