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Huang Z, Xiao L, Xiao Y, Chen C. The Modulatory Role of Growth Hormone in Inflammation and Macrophage Activation. Endocrinology 2022; 163:6607489. [PMID: 35695371 DOI: 10.1210/endocr/bqac088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Indexed: 11/19/2022]
Abstract
Inflammation is a body's response to remove harmful stimuli and heal tissue damage, which is involved in various physiology and pathophysiology conditions. If dysregulated, inflammation may lead to significant negative impacts. Growth hormone (GH) has been shown responsible for not only body growth but also critical in the modulation of inflammation. In this review, we summarize the current clinical and animal studies about the complex and critical role of GH in inflammation. Briefly, GH excess or deficiency may lead to pathological inflammatory status. In inflammatory diseases, GH may serve as an inflammatory modulator to control the disease progression and promote disease resolution. The detailed mechanisms and signaling pathways of GH on inflammation, with a focus on the modulation of macrophage polarization, are carefully discussed with potential direction for future investigations.
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Affiliation(s)
- Zhengxiang Huang
- School of Biomedical Sciences, University of Queensland, St Lucia, QLD 4072, Australia
- School of Mechanical, Medical, and Process Engineering, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
- Centre for Biomedical Technologies, QUT, Brisbane, QLD 4000, Australia
- The Australia-China Centre for Tissue Engineering and Regenerative Medicine (ACCTERM), QUT, Brisbane, QLD 4000, Australia
| | - Lan Xiao
- School of Mechanical, Medical, and Process Engineering, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
- Centre for Biomedical Technologies, QUT, Brisbane, QLD 4000, Australia
- The Australia-China Centre for Tissue Engineering and Regenerative Medicine (ACCTERM), QUT, Brisbane, QLD 4000, Australia
| | - Yin Xiao
- School of Mechanical, Medical, and Process Engineering, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
- Centre for Biomedical Technologies, QUT, Brisbane, QLD 4000, Australia
- The Australia-China Centre for Tissue Engineering and Regenerative Medicine (ACCTERM), QUT, Brisbane, QLD 4000, Australia
| | - Chen Chen
- School of Biomedical Sciences, University of Queensland, St Lucia, QLD 4072, Australia
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Reid TJ, Jin Z, Shen W, Reyes-Vidal CM, Fernandez JC, Bruce JN, Kostadinov J, Post KD, Freda PU. IGF-1 levels across the spectrum of normal to elevated in acromegaly: relationship to insulin sensitivity, markers of cardiovascular risk and body composition. Pituitary 2015; 18:808-19. [PMID: 25907335 PMCID: PMC4619193 DOI: 10.1007/s11102-015-0657-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE Activity of acromegaly is gauged by levels of GH and IGF-1 and epidemiological studies demonstrate that their normalization reduces acromegaly's excess mortality rate. However, few data are available linking IGF-1 levels to features of the disease that may relate to cardiovascular (CV) risk. Therefore, we tested the hypothesis that serum IGF-1 levels relative to the upper normal limit relate to insulin sensitivity, serum CV risk markers and body composition in acromegaly. METHODS In this prospective, cross-sectional study conducted at a pituitary tumor referral center we studied 138 adult acromegaly patients, newly diagnosed and previously treated surgically, with fasting and post-oral glucose levels of endocrine and CV risk markers and body composition assessed by DXA. RESULTS Active acromegaly is associated with lower insulin sensitivity, body fat and CRP levels than acromegaly in remission. %ULN IGF-1 strongly predicts insulin sensitivity, better than GH and this persists after adjustment for body fat and lean tissue mass. %ULN IGF-1 also relates inversely to CRP levels and fat mass, positively to lean tissue and skeletal muscle estimated (SM(E)) by DXA, but not to blood pressure, lipids, BMI or waist circumference. Gender interacts with the IGF-1-lean tissue mass relationship. CONCLUSIONS Active acromegaly presents a unique combination of features associated with CV risk, reduced insulin sensitivity yet lower body fat and lower levels of some serum CV risk markers, a pattern that is reversed in remission. %ULN IGF-1 levels strongly predict these features. Given the known increased CV risk of active acromegaly, these findings suggest that of these factors insulin resistance is most strongly related to disease activity and potentially to the increased CV risk of active acromegaly.
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Affiliation(s)
- Tirissa J Reid
- Department of Medicine, Columbia University, College of Physicians and Surgeons, 650 West 168th Street, 9-905, New York, NY, 10032, USA
| | - Zhezhen Jin
- Department of Biostatistics, Columbia University, College of Physicians and Surgeons, New York, NY, 10032, USA
| | - Wei Shen
- Department of Medicine, Columbia University, College of Physicians and Surgeons, 650 West 168th Street, 9-905, New York, NY, 10032, USA
| | - Carlos M Reyes-Vidal
- Department of Medicine, Columbia University, College of Physicians and Surgeons, 650 West 168th Street, 9-905, New York, NY, 10032, USA
| | - Jean Carlos Fernandez
- Department of Medicine, Columbia University, College of Physicians and Surgeons, 650 West 168th Street, 9-905, New York, NY, 10032, USA
| | - Jeffrey N Bruce
- Department of Neurosurgery, Columbia University, College of Physicians and Surgeons, New York, NY, 10032, USA
| | - Jane Kostadinov
- Department of Neurosurgery, Mt. Sinai School of Medicine, New York, NY, USA
| | - Kalmon D Post
- Department of Neurosurgery, Mt. Sinai School of Medicine, New York, NY, USA
- Department of Medicine, Mt. Sinai School of Medicine, New York, NY, USA
| | - Pamela U Freda
- Department of Medicine, Columbia University, College of Physicians and Surgeons, 650 West 168th Street, 9-905, New York, NY, 10032, USA.
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Reyes-Vidal C, Fernandez JC, Bruce JN, Crisman C, Conwell IM, Kostadinov J, Geer EB, Post KD, Freda PU. Prospective study of surgical treatment of acromegaly: effects on ghrelin, weight, adiposity, and markers of CV risk. J Clin Endocrinol Metab 2014; 99:4124-32. [PMID: 25137427 PMCID: PMC4223431 DOI: 10.1210/jc.2014-2259] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Although epidemiological studies have found that GH and IGF-1 normalization reduce the excess mortality of active acromegaly to expected rates, cross-sectional data report some cardiovascular (CV) risk markers to be less favorable in remission than active acromegaly. OBJECTIVE The objective of the study was to test the hypothesis that remission of acromegaly after surgical therapy increases weight and adiposity and some CV risk markers and these changes are paralleled by a rise in ghrelin. DESIGN Forty-two adults with untreated, active acromegaly were studied prospectively. Changes in outcome measures from before to after surgery were assessed in 26 subjects achieving remission (normal IGF-1) and 16 with persistent active acromegaly (elevated IGF-1) after surgery. SETTING The study was conducted at tertiary referral centers for pituitary tumors. MAIN OUTCOME MEASURES Endocrine, metabolic, and CV risk parameters, anthropometrics, and body composition by dual-energy X-ray absorptiometry were measured. RESULTS Remission increased total ghrelin, body weight, waist circumference, C-reactive protein, homocysteine, high-density lipoprotein, and leptin and reduced systolic blood pressure, homeostasis model assessment score, triglycerides, and lipoprotein (a) by 6 months and for 32 ± 4 months after surgery. The ghrelin rise correlated with the fall in the levels of GH, IGF-1, and insulin and insulin resistance. Weight, waist circumference, and ghrelin did not increase significantly in the persistent active acromegaly group. Total body fat, trunk fat, and perentage total body fat increased by 1 year after surgery in 15 remission subjects: the increase in body fat correlated with the rise in total ghrelin. CONCLUSIONS Although most markers of CV risk improve with acromegaly remission after surgery, some markers and adiposity increase and are paralleled by a rise in total ghrelin, suggesting that these changes may be related. Understanding the mechanisms and long-term implications of the changes that accompany treatment of acromegaly is important to optimizing management because some aspects of the postoperative profile associate with the increased metabolic and CV risk in other populations.
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Affiliation(s)
- Carlos Reyes-Vidal
- Departments of Medicine (C.R-V., J.C.F., I.M.C., P.U.F.) and Neurosurgery (J.N.B.), Columbia University College of Physicians and Surgeons, New York, New York 10032; Department of Neurosurgery (C.C.), Rutgers New Jersey Medical School, Rutgers, New Jersey 07103; and Departments of Neurosurgery (J.K., E.B.G., K.D.P.) and Medicine (E.B.G., K.D.P.), Mt Sinai Medical Center, New York, New York 10029
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Plasma proteomic profiles of bovine growth hormone transgenic mice as they age. Transgenic Res 2011; 20:1305-20. [PMID: 21365322 DOI: 10.1007/s11248-011-9499-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Accepted: 02/20/2011] [Indexed: 12/17/2022]
Abstract
Attenuation of the growth hormone (GH)/insulin-like growth factor-1 (IGF-1) axis results in extended lifespan in many organisms including mice. Conversely, GH transgenic mice have excess GH action and die prematurely. We have studied bovine (b) GH transgenic mice (n = 9) and their wild type (WT) littermates (n = 8) longitudinally and have determined several age-related changes. Compared to WT mice, bGH mice lost fat mass, became hypoglycemic and had lower insulin levels at older ages despite being hyperinsulinemic when young. To examine plasma protein differences in bGH mice relative to controls, samples at 2, 4, 8, 12 and 16 months of age were analyzed by two-dimensional gel electrophoresis followed by identification using mass spectrometry. We found several differences in plasma proteins of bGH mice compared to controls, including increased apolipoprotein E (five isoforms), haptoglobin (four isoforms) and mannose-binding protein-C (one out of three isoforms), and decreased transthyretin (six isoforms). In addition, clusterin (two out of six isoforms) and haptoglobin (four isoforms) were up-regulated in bGH mice as a function of age. Finally, alpha-2 macroglobulin (seven isoforms) was altered in an isoform-specific manner with two isoforms increased and two decreased in bGH mouse plasma compared to controls. In conclusion, identification of these proteins suggests that bGH mice exhibit an increased inflammatory state with an adverse lipid profile, possibly contributing to their diminished life expectancy. Also, these newly discovered plasma proteins may be indicative or 'biomarkers' of a shortened lifespan.
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Peters SJAC, Vanhaecke T, Papeleu P, Rogiers V, Haagsman HP, van Norren K. Co-culture of primary rat hepatocytes with rat liver epithelial cells enhances interleukin-6-induced acute-phase protein response. Cell Tissue Res 2010; 340:451-7. [PMID: 20411395 PMCID: PMC2882052 DOI: 10.1007/s00441-010-0955-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2009] [Accepted: 02/25/2010] [Indexed: 12/01/2022]
Abstract
Three different primary rat hepatocyte culture methods were compared for their ability to allow the secretion of fibrinogen and albumin under basal and IL-6-stimulated conditions. These culture methods comprised the co-culture of hepatocytes with rat liver epithelial cells (CC-RLEC), a collagen type I sandwich culture (SW) and a conventional primary hepatocyte monolayer culture (ML). Basal albumin secretion was most stable over time in SW. Fibrinogen secretion was induced by IL-6 in all cell culture models. Compared with ML, CC-RLEC showed an almost three-fold higher fibrinogen secretion under both control and IL-6-stimulated conditions. Induction of fibrinogen release by IL-6 was lowest in SW. Albumin secretion was decreased after IL-6 stimulation in both ML and CC-RLEC. Thus, cells growing under the various primary hepatocyte cell culture techniques react differently to IL-6 stimulation with regard to acute-phase protein secretion. CC-RLEC is the preferred method for studying cytokine-mediated induction of acute-phase proteins, because of the pronounced stimulation of fibrinogen secretion upon IL-6 exposure under these conditions.
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Affiliation(s)
- Stephan J. A. C. Peters
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, P.O. Box 80.165, 3508 TD Utrecht, The Netherlands
- Nutricia Advanced Medical Nutrition, Danone Centre for Specialised Nutrition, P.O. Box 7005, 6700 CA Wageningen, The Netherlands
| | - Tamara Vanhaecke
- Department of Toxicology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Peggy Papeleu
- Department of Toxicology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Vera Rogiers
- Department of Toxicology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Henk P. Haagsman
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, P.O. Box 80.165, 3508 TD Utrecht, The Netherlands
| | - Klaske van Norren
- Nutricia Advanced Medical Nutrition, Danone Centre for Specialised Nutrition, P.O. Box 7005, 6700 CA Wageningen, The Netherlands
- Nutrition and Pharmacology Group, Division of Human Nutrition, Wageningen University, Wageningen, The Netherlands
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Berczi I, Quintanar-Stephano A, Kovacs K. Neuroimmune regulation in immunocompetence, acute illness, and healing. Ann N Y Acad Sci 2009; 1153:220-39. [PMID: 19236345 DOI: 10.1111/j.1749-6632.2008.03975.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Adaptive immunocompetence is maintained by growth hormone (GH), prolactin (PRL), and vasopressin (VP). Innate or natural immunocompetence depends on cytokines, hormones (especially of the hypothalamus-pituitary-adrenal axis), and catecholamines. The acute phase response (APR, or acute febrile illness) is an emergency defense reaction whereby the adaptive, T cell-dependent, immune reactions are suppressed and the innate immune function is dramatically amplified. Infection and various forms of injury induce APR. Cytokines [interleukin (IL)-1beta, tumor necrosis factor-alpha, and IL-6] stimulate corticotropin-releasing hormone (CRH) and VP secretion and cause a "sympathetic outflow." Colony-stimulating factors activate leukocytes. CRH is a powerful activator of the pituitary adrenocortical axis and elevates glucocorticoid (GC) levels. Cytokines, GCs, and catecholamines play fundamental roles in the amplification of natural immune defense mechanisms. VP supports the APR at this stage. However, VP remains active and is elevated for a longer period than is CRH. VP, but not CRH, is elevated during chronic inflammatory diseases. VP controls adaptive immune function and stimulates adrenocorticotropic hormone (ACTH) and PRL secretion. PRL maintains the function of the thymus and of the T cell-dependent adaptive immune system. The ACTH-adrenal axis stimulates natural immunity and of suppressor/regulatory T cells, which suppress the adaptive immune system. VP also has a direct effect on lymphoid cells, the significance of which remains to be elucidated. It is suggested that VP regulates the process of recovery from acute illness.
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Affiliation(s)
- Istvan Berczi
- Department of Immunology, Faculty of Medicine, the University of Manitoba, Winnipeg, Canada.
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Boero L, Manavela M, Gómez Rosso L, Insua C, Berardi V, Fornari MC, Brites F. Alterations in biomarkers of cardiovascular disease (CVD) in active acromegaly. Clin Endocrinol (Oxf) 2009; 70:88-95. [PMID: 19128365 DOI: 10.1111/j.1365-2265.2008.03323.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVES In acromegalic patients, cardiovascular and metabolic comorbidities contribute to enhance mortality. Available data on the lipoprotein profile of these patients are controversial. Our aim was to characterize the lipoprotein profile and emergent biomarkers of cardiovascular disease in active acromegalic patients in comparison with sex- and age-matched healthy controls. PATIENTS Eighteen patients with active acromegaly and 18 controls were studied. MEASUREMENTS Glucose levels, hormonal status, lipoprotein profile and C reactive protein (CRP) were evaluated by standardized methods. Cholesteryl ester transfer protein (CETP) and lipoprotein-associated phospholipase A(2 )(Lp-PLA(2)) were measured by radiometric techniques, endothelin-1 and vascular cell adhesion molecule (VCAM)-1 by enzyme-linked immunosorbent assay, and leucocytes CD18, CD49d and CD54 by flow cytometry. RESULTS After adjusting for body mass index (BMI), acromegalic patients presented a more atherogenic lipoprotein profile, consisting of higher levels of triglycerides and apolipoprotein B and alterations in the ratios which estimate insulin resistance and atherogenic risk. CETP activity was significantly increased in acromegalic patients as compared to controls (168 +/- 17 vs. 141 +/- 30% per ml h, respectively; P < 0.05). Endothelin-1 levels evidenced an increase in the patients' group (0.9 +/- 0.2 vs. 0.7 +/- 0.2 ng/l, respectively; P < 0.01) and showed positive and significant correlations with GH, IGF-1 and IGFBP-3 (r = 0.45, 0.42 and 0.44, respectively; P < 0.01 for all of them; with BMI as a fixed variable). Lymphocytes from acromegalic patients showed increased CD49d content (282 +/- 59 vs. 246 +/- 48 arbitrary units, respectively; P < 0.05). CONCLUSIONS Taken together, the alterations described seem to contribute to constituting a state of higher propensity for the development of atherosclerotic cardiovascular disease, which adds to the presence of specific cardiomyopathy.
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Affiliation(s)
- L Boero
- Department of Clinical Biochemistry, Faculty of Pharmacy and Biochemistry, CONICET, University of Buenos Aires, Buenos Aires, Argentina.
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Andreassen M, Vestergaard H, Kristensen LØ. Concentrations of the acute phase reactants high-sensitive C-reactive protein and YKL-40 and of interleukin-6 before and after treatment in patients with acromegaly and growth hormone deficiency. Clin Endocrinol (Oxf) 2007; 67:909-16. [PMID: 17727678 DOI: 10.1111/j.1365-2265.2007.02986.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Acromegaly is accompanied by increased cardiovascular mortality and a cluster of proatherogenic risk factors. In the general population, ischaemic heart disease (IHD) is associated with elevated levels of inflammatory markers. The acute phase reactant (APR) C-reactive protein (CRP) has been reported to be reduced in acromegaly and increase after treatment, suggesting that excess of GH/IGF-I could have anti-inflammatory effects. This is in accordance with results obtained in patients with growth hormone deficiency (GHD), where increased levels of CRP have been reported. OBJECTIVE To investigate the hypothesis that the GH/IGF-I system is a suppressive regulator of inflammatory processes. SUBJECTS AND METHODS Twenty-one acromegalic patients and 19 GH-deficient patients were studied. The two APRs CRP and YKL-40 and the proinflammatory cytokine interleukin-6 (IL-6) were measured before and after treatment and in healthy matched controls. RESULTS In acromegalic patients, serum concentrations of high-sensitive CRP (hsCRP) and YKL-40 were reduced compared to controls (P < 0.001) and increased (P < 0.001) after treatment, together with IL-6 (P = 0.021), to levels comparable with controls. Pretreatment serum YKL-40 and IL-6 showed a significant inverse correlation with IGF-I and GH. In GH-deficient patients, hsCRP and YKL-40 were elevated compared to controls (P = 0.001 and P = 0.048). During treatment, levels of both APRs showed a trend towards a decrease (P = 0.087 and P = 0.060), and after treatment, levels of YKL-40 no longer differed from that of controls. Serum IL-6 was not different from controls and did not change during GH treatment. CONCLUSION The results point to the possibility of a relationship between GH disturbances and inflammatory processes.
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Affiliation(s)
- Mikkel Andreassen
- Department of Endocrinology and Internal Medicine J106, Herlev Hospital, University of Copenhagen, Herlev, Denmark.
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de Wolf CJF, Cupers RMJ, Bertina RM, Vos HL. Interleukin-6 induction of protein s is regulated through signal transducer and activator of transcription 3. Arterioscler Thromb Vasc Biol 2006; 26:2168-74. [PMID: 16840717 DOI: 10.1161/01.atv.0000236202.39165.eb] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The protein C anticoagulant pathway is an essential process for attenuating thrombin generation by the membrane-bound procoagulant complexes tenase and prothrombinase. In this pathway, protein S (PS) serves as a cofactor for activated protein C. PS circulates in plasma both in a free form and in complex with complement component 4b-binding protein (C4BP). C4BP is a known acute phase reactant, thereby suggesting a relation between PS and the acute phase response. Interleukin (IL)-6 has been shown to increase both PS and C4BP gene expression. Our objective was to study the regulation of PS gene expression by IL-6 in detail. METHODS AND RESULTS IL-6 upregulates both PS mRNA and protein levels in liver-derived HepG2 cells. The promoter of the PS gene (PROS1) was cloned upstream from a luciferase reporter gene. After transfection in HepG2 cells, the luciferase activity was shown to be stimulated by the addition of IL-6. IL-6 exerts its effect through Signal Transducer and Activator of Transcription 3 (STAT3) that interacts with the PROS1 promoter at a binding site in between nucleotides 229 to 207 upstream from the translational start. CONCLUSIONS IL-6 induces PS expression via STAT3. A possible function for IL-6-induced PS expression in cell survival is discussed.
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Affiliation(s)
- Cornelia J F de Wolf
- Hemostasis and Thrombosis Research Center, Department of Hematology, Leiden, The Netherlands
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López-Bojórquez LN, Dehesa AZ, Reyes-Terán G. Molecular mechanisms involved in the pathogenesis of septic shock. Arch Med Res 2005; 35:465-79. [PMID: 15631870 DOI: 10.1016/j.arcmed.2004.07.006] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Pathogenesis of the development of sepsis is highly complex and has been the object of study for many years. The inflammatory phenomena underlying septic shock are described in this review, as well as the enzymes and genes involved in the cellular activation that precedes this condition. The most important molecular aspects are discussed, ranging from the cytokines involved and their respective transduction pathways to the cellular mechanisms related to accelerated catabolism and multi-organic failure.
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Affiliation(s)
- Lucia Nikolaia López-Bojórquez
- Departamento de Biología Celular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico, D.F., Mexico.
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Neuroendocrine Regulation of Natural Immunity. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s1567-7443(05)80017-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Lykova OF, Romanova TV, Moiseeva LM, Konysheva TV, Grigor'ev EV, Zorin NA. Effect of perftoran on macroglobulin content in the plasma and peritoneal exudate of rats with acute exudative inflammation (peritonitis). Bull Exp Biol Med 2004; 138:351-3. [PMID: 15665942 DOI: 10.1007/s10517-005-0097-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The effect of blood substitute perftoran on the content of alpha(1)- and alpha(2)-macroglobulins in the plasma and exudate was studied in rats with acute exudative inflammation. After intravenous injection of perftoran macroglobulin content increased in the plasma, but remained unchanged in the peritoneal fluid.
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Affiliation(s)
- O F Lykova
- State Institute for Postgraduate Training of Physicians, Russian Ministry of Health, Novokuznetsk.
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Lykova OF, Romanova TV, Moiseeva LM, Konysheva TV, Grigor’ev EV, Zorin NA. Effect of perftoran on macroglobulin content in the plasma and peritoneal exudate of rats with acute exudative inflammation (peritonitis). Bull Exp Biol Med 2004. [DOI: 10.1007/s10517-004-0009-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Wu X, Thomas SJ, Herndon DN, Sanford AP, Wolf SE. Insulin decreases hepatic acute phase protein levels in severely burned children. Surgery 2004; 135:196-202. [PMID: 14739855 DOI: 10.1016/j.surg.2003.08.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND Severe burn induces the hepatic acute phase response. In this study, we wondered whether continuous insulin treatment decreases acute phase protein levels in the severely burned. METHODS Eighteen children aged 2 to 17 years with burns >40% of total body surface area were randomized to receive either insulin (n=9) or no treatment (n=9) within 72 hours after injury until the wounds were 95% healed. Insulin was given at a continuous rate of > or =1.5 microU/kg/min to maintain euglycemia (serum glucose 100-140 microg/dL). Plasma was examined at days 7, 14, 21, and 28 for acute phase protein levels including C-reactive protein, C3 complement, alpha1-acid glycoprotein, haptoglobin, alpha2-macroglobulin, prealbumin, transferrin, and retinol-binding protein. Statistical analysis was by ANOVA and t test. RESULTS With insulin treatment, alpha1-acid glycoprotein, C3 complement, alpha2-macroglobulin, and haptoglobin levels decreased (P<.05) after a severe burn compared with control, especially at days 21 and 28. Additionally, the hepatic constitutive proteins (prealbumin, transferrin, and retinol-binding protein) were lower in the insulin-treatment group than those of the control group at day 21 (P<.05). CONCLUSIONS Continuous insulin treatment decreases acute phase protein levels after a severe burn. The results suggest insulin downregulation of the hepatic acute phase response to injury.
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Affiliation(s)
- Xiaowu Wu
- Shriners Hospitals for Children and Department of Surgery, the University of Texas Medical Branch, Galveston, Tex 77550, USA
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15
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The acute phase response. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s1567-7443(03)80059-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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16
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Growth and lactogenic hormones, insulin-like growth factor and insulin. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s1567-7443(03)80045-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Gerner C, Vejda S, Gelbmann D, Bayer E, Gotzmann J, Schulte-Hermann R, Mikulits W. Concomitant determination of absolute values of cellular protein amounts, synthesis rates, and turnover rates by quantitative proteome profiling. Mol Cell Proteomics 2002; 1:528-37. [PMID: 12239281 DOI: 10.1074/mcp.m200026-mcp200] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Two-dimensional gel electrophoresis of protein fractions isolated from (35)S-radiolabeled cells provides qualitative information on intracellular amounts, (35)S incorporation rates, protein modifications, and subcellular localizations of up to thousands of individual proteins. In this study we extended proteome profiling to provide quantitative data on synthesis rates of individual proteins. We combined fluorescence detection of radiolabeled proteins with SYPRO ruby(TM) staining and subsequent autoradiography of the same gels, thereby quantifying protein amounts and (35)S incorporation. To calibrate calculation of absolute synthesis rates, we determined the amount and autoradiograph intensity of radiolabeled haptoglobin secreted by interleukin-6 pretreated HepG2 cells. This allowed us to obtain a standard calibration value for (35)S incorporation per autoradiograph intensity unit. This value was used to measure protein synthesis rates during time course experiments of heat-shocked U937 cells. We measured the increasing amounts of hsp70 and calculated it by integration of the determined hsp70 synthesis rates over time. Similar results were obtained by both methods, validating our standardization procedure. Based on the assumption that the synthesis rate of proteins in a steady state of cell metabolism would essentially compensate protein degradation, we calculated biological half-lives of proteins from protein amounts and synthesis rates determined from two-dimensional gels. Calculated protein half-lives were found close to those determined by pulse-chase experiments, thus validating this new method. In conclusion, we devised a method to assess quantitative proteome profiles covering determination of individual amounts, synthesis, and turnover rates of proteins.
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Affiliation(s)
- Christopher Gerner
- Institute of Cancer Research, University of Vienna, 1090 Vienna, Austria.
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Sesmilo G, Fairfield WP, Katznelson L, Pulaski K, Freda PU, Bonert V, Dimaraki E, Stavrou S, Vance ML, Hayden D, Klibanski A. Cardiovascular risk factors in acromegaly before and after normalization of serum IGF-I levels with the GH antagonist pegvisomant. J Clin Endocrinol Metab 2002; 87:1692-9. [PMID: 11932303 DOI: 10.1210/jcem.87.4.8364] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Acromegaly is associated with premature cardiovascular mortality. GH replacement therapy decreases inflammatory markers of cardiovascular risk, but little is known about these markers in patients with acromegaly. The GH receptor antagonist, pegvisomant, reduces IGF-I levels in 98% of patients treated. We investigated the effects of GH receptor blockade on inflammatory and other cardiovascular risk markers in active acromegaly. Forty-eight patients with acromegaly and 47 age- and body mass index-matched controls were included. The study consisted of 3 parts: a cross-sectional study, a prospective randomized 12-wk placebo-controlled study, and a longitudinal open-label study of up to 18 months of pegvisomant treatment. After baseline evaluation, patients with acromegaly were randomized to placebo (n = 14), 10 mg (n = 12), 15 mg (n = 10), or 20 mg (n = 12) daily pegvisomant for 12 wk. Subsequently, all patients received at least 10 mg pegvisomant daily for up to 18 months, with dose adjustments to achieve a normal IGF-I level. Anthropometry, GH, IGF-I, and pegvisomant levels were measured monthly. C-reactive protein (CRP), IL-6, homocysteine, lipoprotein(a), glucose, insulin, triglycerides, total cholesterol, and high-density lipoprotein (HDL) and low-density lipoprotein (LDL) cholesterol were determined at baseline, 4 and 12 wk in the placebo-controlled study and at 3-month intervals (during which IGF-I levels were normal) in the longitudinal study. In the cross-sectional study, patients had lower CRP than did controls [median, 0.3 (range, 0.2-0.8) vs. 2.0 (0.6-3.7) mg/liter; P < 0.0001] and had higher insulin [78.6 (55.8-130.2) vs. 54.5 (36.6-77.5) pM, P = 0.0051]. IL-6, homocysteine, triglycerides, lipoprotein(a), LDL cholesterol and HDL cholesterol were not different between groups. In the placebo-controlled study, CRP increased in patients treated with 20 mg pegvisomant, compared with placebo (mean +/- SEM, 13.7 +/- 3.6 vs. 0.5 +/- 3.3 mg/liter; P = 0.010). There were no significant differences in IL-6, homocysteine, glucose, insulin, triglyceride, total cholesterol, LDL cholesterol and HDL cholesterol levels. In the longitudinal open-label study (median duration, 15.6 months), CRP increased by 2.0 +/- 0.5 mg/liter (P = 0.0002). Total cholesterol and triglycerides increased (0.22 +/- 0.11 mM, P = 0.050; and 0.25 +/- 0.09 mM, P = 0.007, respectively), whereas lipoprotein(a) decreased (-70 +/- 33 mg/liter, P = 0.039). Glucose, insulin, homocysteine, HDL cholesterol, and IL-6 did not change. We conclude that patients with active acromegaly have lower CRP and higher insulin levels than healthy controls. Administration of pegvisomant increases CRP levels. We propose that GH secretory status is an important determinant of serum CRP levels, although additional studies are needed to determine the mechanism and significance of this finding.
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Affiliation(s)
- Gemma Sesmilo
- Neuroendocrine Clinical Center, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA
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