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Published in: Respiratory Research 1/2013

Open Access 01-12-2013 | Research

Systemic inflammation, depression and obstructive pulmonary function: a population-based study

Authors: Yanxia Lu, Lei Feng, Liang Feng, Ma Shwe Nyunt, Keng Bee Yap, Tze Pin Ng

Published in: Respiratory Research | Issue 1/2013

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Abstract

Background

Levels of Interleukin-6 (IL-6) and C-creative protein (CRP) indicating systemic inflammation are known to be elevated in chronic diseases including chronic obstructive pulmonary disease (COPD) and depression. Comorbid depression is common in patients with COPD, but no studies have investigated whether proinflammatory cytokines mediate the association between pulmonary function and depressive symptoms in healthy individuals with no known history of obstructive pulmonary diseases.

Methods

In a population-based sample (n = 2077) of individuals aged 55 and above with no known history of obstructive pulmonary disease in the Singapore Longitudinal Ageing Study (SLAS), we analyzed the relationships between IL-6 and CRP, depressive symptoms (GDS-15 ≥5) and obstructive pulmonary function (FEV1% predicted and FEV1/FVC% predicted).

Results

High serum levels of IL-6 and CRP were associated with greater prevalence of depressive symptoms (p < 0.05). High IL-6, high CRP and depressive symptoms were independently associated with decreased FEV1% predicted and FEV1/FVC% predicted after adjusting for smoking status, BMI and number of chronic inflammatory diseases. Increasing grades of combination of inflammatory markers and/or depressive symptoms was associated with progressive increases in pulmonary obstruction. In hierarchical models, the significant association of depressive symptoms with pulmonary obstruction was reduced by the presence of IL-6 and CRP.

Conclusions

This study found for the first time an association of depressive symptoms and pulmonary function in older adults which appeared to be partly mediated by proinflammatory cytokines. Further studies should be conducted to investigate proinflammatory immune markers and depressive symptoms as potential phenotypic indicators for chronic obstructive airway disorders in older adults.
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Literature
1.
go back to reference Corsonello A, Antonelli Incalzi R, Pistelli R, Pedone C, Bustacchini S, Lattanzio F: Comorbidities of chronic obstructive pulmonary disease. Curr Opin Pulm Med. 2011, 17 (Suppl 1): S21-S28.PubMedCrossRef Corsonello A, Antonelli Incalzi R, Pistelli R, Pedone C, Bustacchini S, Lattanzio F: Comorbidities of chronic obstructive pulmonary disease. Curr Opin Pulm Med. 2011, 17 (Suppl 1): S21-S28.PubMedCrossRef
2.
go back to reference Gan WQ, Man SF, Senthilselvan A, Sin DD: Association between chronic obstructive pulmonary disease and systemic inflammation: a systematic review and a meta-analysis. Thorax. 2004, 59: 574-580. 10.1136/thx.2003.019588.PubMedPubMedCentralCrossRef Gan WQ, Man SF, Senthilselvan A, Sin DD: Association between chronic obstructive pulmonary disease and systemic inflammation: a systematic review and a meta-analysis. Thorax. 2004, 59: 574-580. 10.1136/thx.2003.019588.PubMedPubMedCentralCrossRef
3.
go back to reference Gompertz S, O'Brien C, Bayley DL, Hill SL, Stockley RA: Changes in bronchial inflammation during acute exacerbations of chronic bronchitis. Eur Respir J. 2001, 17: 1112-1119. 10.1183/09031936.01.99114901.PubMedCrossRef Gompertz S, O'Brien C, Bayley DL, Hill SL, Stockley RA: Changes in bronchial inflammation during acute exacerbations of chronic bronchitis. Eur Respir J. 2001, 17: 1112-1119. 10.1183/09031936.01.99114901.PubMedCrossRef
4.
go back to reference Chang SS, Vaz Fragoso CA, Van Ness PH, Fried LP, Tinetti ME: Association between combined interleukin-6 and C-reactive protein levels and pulmonary function in older women: results from the Women's Health and Aging Studies I and II. J Am Geriatr Soc. 2011, 59: 113-119. 10.1111/j.1532-5415.2010.03203.x.PubMedPubMedCentralCrossRef Chang SS, Vaz Fragoso CA, Van Ness PH, Fried LP, Tinetti ME: Association between combined interleukin-6 and C-reactive protein levels and pulmonary function in older women: results from the Women's Health and Aging Studies I and II. J Am Geriatr Soc. 2011, 59: 113-119. 10.1111/j.1532-5415.2010.03203.x.PubMedPubMedCentralCrossRef
5.
go back to reference Mannino DM, Ford ES, Redd SC: Obstructive and restrictive lung disease and markers of inflammation: data from the Third National Health and Nutrition Examination. Am J Med. 2003, 114: 758-762. 10.1016/S0002-9343(03)00185-2.PubMedCrossRef Mannino DM, Ford ES, Redd SC: Obstructive and restrictive lung disease and markers of inflammation: data from the Third National Health and Nutrition Examination. Am J Med. 2003, 114: 758-762. 10.1016/S0002-9343(03)00185-2.PubMedCrossRef
6.
go back to reference Schols AM, Buurman WA, Staal van den Brekel AJ, Dentener MA, Wouters EF: Evidence for a relation between metabolic derangements and increased levels of inflammatory mediators in a subgroup of patients with chronic obstructive pulmonary disease. Thorax. 1996, 51: 819-824. 10.1136/thx.51.8.819.PubMedPubMedCentralCrossRef Schols AM, Buurman WA, Staal van den Brekel AJ, Dentener MA, Wouters EF: Evidence for a relation between metabolic derangements and increased levels of inflammatory mediators in a subgroup of patients with chronic obstructive pulmonary disease. Thorax. 1996, 51: 819-824. 10.1136/thx.51.8.819.PubMedPubMedCentralCrossRef
7.
go back to reference Hurst JR, Donaldson GC, Perera WR, Wilkinson TMA, Bilello JA, Hagan GW, Vessey RS, Wedzicha JA: Use of plasma biomarkers at exacerbation of chronic obstructive pulmonary disease. Am J Respir Crit Care Med. 2006, 174: 867-874. 10.1164/rccm.200604-506OC.PubMedCrossRef Hurst JR, Donaldson GC, Perera WR, Wilkinson TMA, Bilello JA, Hagan GW, Vessey RS, Wedzicha JA: Use of plasma biomarkers at exacerbation of chronic obstructive pulmonary disease. Am J Respir Crit Care Med. 2006, 174: 867-874. 10.1164/rccm.200604-506OC.PubMedCrossRef
8.
go back to reference van Ede L, Yzermans CJ, Brouwer HJ: Prevalence of depression in patients with chronic obstructive pulmonary disease: a systematic review. Thorax. 1999, 54: 688-692. 10.1136/thx.54.8.688.PubMedPubMedCentralCrossRef van Ede L, Yzermans CJ, Brouwer HJ: Prevalence of depression in patients with chronic obstructive pulmonary disease: a systematic review. Thorax. 1999, 54: 688-692. 10.1136/thx.54.8.688.PubMedPubMedCentralCrossRef
9.
go back to reference Lindqvist D, Janelidze S, Hagell P, Erhardt S, Samuelsson M, Minthon L, Hansson O, Bjorkqvist M, Traskman-Bendz L, Brundin L: Interleukin-6 is elevated in the cerebrospinal fluid of suicide attempters and related to symptom severity. Biol Psychiatry. 2009, 66: 287-292. 10.1016/j.biopsych.2009.01.030.PubMedCrossRef Lindqvist D, Janelidze S, Hagell P, Erhardt S, Samuelsson M, Minthon L, Hansson O, Bjorkqvist M, Traskman-Bendz L, Brundin L: Interleukin-6 is elevated in the cerebrospinal fluid of suicide attempters and related to symptom severity. Biol Psychiatry. 2009, 66: 287-292. 10.1016/j.biopsych.2009.01.030.PubMedCrossRef
10.
go back to reference Howren MB, Lamkin DM, Suls J: Associations of depression with C-reactive protein, IL-1, and IL-6: a meta-analysis. Psychosom Med. 2009, 71: 171-186. 10.1097/PSY.0b013e3181907c1b.PubMedCrossRef Howren MB, Lamkin DM, Suls J: Associations of depression with C-reactive protein, IL-1, and IL-6: a meta-analysis. Psychosom Med. 2009, 71: 171-186. 10.1097/PSY.0b013e3181907c1b.PubMedCrossRef
11.
go back to reference Hiles SA, Baker AL, de Malmanche T, Attia J: Interleukin-6, C-reactive protein and interleukin-10 after antidepressant treatment in people with depression: a meta-analysis. Psychol Med. 2012, 42 (10): 2015-2026. 10.1017/S0033291712000128.PubMedCrossRef Hiles SA, Baker AL, de Malmanche T, Attia J: Interleukin-6, C-reactive protein and interleukin-10 after antidepressant treatment in people with depression: a meta-analysis. Psychol Med. 2012, 42 (10): 2015-2026. 10.1017/S0033291712000128.PubMedCrossRef
12.
go back to reference Niti M, Ng TP, Kua EH, Ho RC, Tan CH: Depression and chronic medical illnesses in Asian older adults: the role of subjective health and functional status. Int J Geriatr Psychiatry. 2007, 22: 1087-1094. 10.1002/gps.1789.PubMedCrossRef Niti M, Ng TP, Kua EH, Ho RC, Tan CH: Depression and chronic medical illnesses in Asian older adults: the role of subjective health and functional status. Int J Geriatr Psychiatry. 2007, 22: 1087-1094. 10.1002/gps.1789.PubMedCrossRef
13.
go back to reference Nyunt MS, Fones C, Niti M, Ng TP: Criterion-based validity and reliability of the Geriatric Depression Screening Scale (GDS-15) in a large validation sample of community-living Asian older adults. Aging Ment Health. 2009, 13: 376-382. 10.1080/13607860902861027.PubMedCrossRef Nyunt MS, Fones C, Niti M, Ng TP: Criterion-based validity and reliability of the Geriatric Depression Screening Scale (GDS-15) in a large validation sample of community-living Asian older adults. Aging Ment Health. 2009, 13: 376-382. 10.1080/13607860902861027.PubMedCrossRef
14.
go back to reference Standardization of Spirometry, 1994 Update. American Thoracic Society. Am J Respir Crit Care Med. 1995, 152: 1107-1136. Standardization of Spirometry, 1994 Update. American Thoracic Society. Am J Respir Crit Care Med. 1995, 152: 1107-1136.
15.
go back to reference Stone AA: Selected methodological concepts: Mediation and moderation, individual differences, aggregation strategies, and variability of replicates. In Stress and disease processes, Perspectives in behavioral medicine. Edited by Schneiderman N, McCabe P, Baum A. Hillsdale, NJ, England: Lawrence Erlbaum Associates, Inc; 1992:55–71. Stone AA: Selected methodological concepts: Mediation and moderation, individual differences, aggregation strategies, and variability of replicates. In Stress and disease processes, Perspectives in behavioral medicine. Edited by Schneiderman N, McCabe P, Baum A. Hillsdale, NJ, England: Lawrence Erlbaum Associates, Inc; 1992:55–71.
16.
go back to reference Ng TP, Niti M, Fones C, Yap KB, Tan WC: Co-morbid association of depression and COPD: a population-based study. Respir Med. 2009, 103: 895-901. 10.1016/j.rmed.2008.12.010.PubMedCrossRef Ng TP, Niti M, Fones C, Yap KB, Tan WC: Co-morbid association of depression and COPD: a population-based study. Respir Med. 2009, 103: 895-901. 10.1016/j.rmed.2008.12.010.PubMedCrossRef
17.
go back to reference Opolski M, Wilson I: Asthma and depression: a pragmatic review of the literature and recommendations for future research. Clin Pract Epidemiol Ment Health. 2005, 1: 18-10.1186/1745-0179-1-18.PubMedPubMedCentralCrossRef Opolski M, Wilson I: Asthma and depression: a pragmatic review of the literature and recommendations for future research. Clin Pract Epidemiol Ment Health. 2005, 1: 18-10.1186/1745-0179-1-18.PubMedPubMedCentralCrossRef
18.
go back to reference Ng TP, Chiam PC, Kua EH: Mental disorders and asthma in the elderly: a population-based study. Int J Geriatr Psychiatry. 2007, 22: 668-674. 10.1002/gps.1728.PubMedCrossRef Ng TP, Chiam PC, Kua EH: Mental disorders and asthma in the elderly: a population-based study. Int J Geriatr Psychiatry. 2007, 22: 668-674. 10.1002/gps.1728.PubMedCrossRef
19.
go back to reference Goodwin RD, Chuang S, Simuro N, Davies M, Pine DS: Association between lung function and mental health problems among adults in the United States: Findings from the First National Health and Nutrition Examination Survey. Am J Epidemiol. 2007, 165: 383-388.PubMedCrossRef Goodwin RD, Chuang S, Simuro N, Davies M, Pine DS: Association between lung function and mental health problems among adults in the United States: Findings from the First National Health and Nutrition Examination Survey. Am J Epidemiol. 2007, 165: 383-388.PubMedCrossRef
20.
go back to reference Sluzewska A, Sobieska M, Rybakowski JK: Changes in acute-phase proteins during lithium potentiation of antidepressants in refractory depression. Neuropsychobiology. 1997, 35: 123-127. 10.1159/000119332.PubMedCrossRef Sluzewska A, Sobieska M, Rybakowski JK: Changes in acute-phase proteins during lithium potentiation of antidepressants in refractory depression. Neuropsychobiology. 1997, 35: 123-127. 10.1159/000119332.PubMedCrossRef
21.
go back to reference Kubera M, Kenis G, Bosmans E, Zieba A, Dudek D, Nowak G, Maes M: Plasma levels of interleukin-6, interleukin-10, and interleukin-1 receptor antagonist in depression: comparison between the acute state and after remission. Pol J Pharmacol. 2000, 52: 237-241.PubMed Kubera M, Kenis G, Bosmans E, Zieba A, Dudek D, Nowak G, Maes M: Plasma levels of interleukin-6, interleukin-10, and interleukin-1 receptor antagonist in depression: comparison between the acute state and after remission. Pol J Pharmacol. 2000, 52: 237-241.PubMed
22.
go back to reference Garrod R, Marshall J, Barley E, Fredericks S, Hagan G: The relationship between inflammatory markers and disability in chronic obstructive pulmonary disease (COPD). Prim Care Respir J. 2007, 16: 236-240. 10.3132/pcrj.2007.00047.PubMedCrossRef Garrod R, Marshall J, Barley E, Fredericks S, Hagan G: The relationship between inflammatory markers and disability in chronic obstructive pulmonary disease (COPD). Prim Care Respir J. 2007, 16: 236-240. 10.3132/pcrj.2007.00047.PubMedCrossRef
23.
go back to reference de Torres JP, Cordoba-Lanus E, Lopez-Aguilar C, Muros de Fuentes M, Montejo de Garcini A, Aguirre-Jaime A, Celli BR, Casanova C: C-reactive protein levels and clinically important predictive outcomes in stable COPD patients. Eur Respir J. 2006, 27: 902-907.PubMed de Torres JP, Cordoba-Lanus E, Lopez-Aguilar C, Muros de Fuentes M, Montejo de Garcini A, Aguirre-Jaime A, Celli BR, Casanova C: C-reactive protein levels and clinically important predictive outcomes in stable COPD patients. Eur Respir J. 2006, 27: 902-907.PubMed
24.
go back to reference Yanbaeva DG, Dentener MA, Spruit MA, Houwing-Duistermaat JJ, Kotz D, Passos VL, Wouters EF: IL6 and CRP haplotypes are associated with COPD risk and systemic inflammation: a case-control study. BMC Med Genet. 2009, 10: 23-PubMedPubMedCentralCrossRef Yanbaeva DG, Dentener MA, Spruit MA, Houwing-Duistermaat JJ, Kotz D, Passos VL, Wouters EF: IL6 and CRP haplotypes are associated with COPD risk and systemic inflammation: a case-control study. BMC Med Genet. 2009, 10: 23-PubMedPubMedCentralCrossRef
25.
go back to reference Yoshida M, Sakuma J, Hayashi S, Abe K, Saito I, Harada S, Sakatani M, Yamamoto S, Matsumoto N, Kaneda Y, Kishimoto T: A Histologically Distinctive Interstitial Pneumonia Induced by Overexpression of the Interleukin-6, Transforming Growth-Factor-Beta-1, or Platelet-Derived Growth-Factor-B Gene. Proc Natl Acad Sci U S A. 1995, 92: 9570-9574. 10.1073/pnas.92.21.9570.PubMedPubMedCentralCrossRef Yoshida M, Sakuma J, Hayashi S, Abe K, Saito I, Harada S, Sakatani M, Yamamoto S, Matsumoto N, Kaneda Y, Kishimoto T: A Histologically Distinctive Interstitial Pneumonia Induced by Overexpression of the Interleukin-6, Transforming Growth-Factor-Beta-1, or Platelet-Derived Growth-Factor-B Gene. Proc Natl Acad Sci U S A. 1995, 92: 9570-9574. 10.1073/pnas.92.21.9570.PubMedPubMedCentralCrossRef
26.
go back to reference Hierholzer C, Kalff JC, Omert L, Tsukada K, Loeffert JE, Watkins SC, Billiar TR, Tweardy DJ: Interleukin-6 production in hemorrhagic shock is accompanied by neutrophil recruitment and lung injury. Am J Physiol Lung Cell Mol Physiol. 1998, 275: L611-L621. Hierholzer C, Kalff JC, Omert L, Tsukada K, Loeffert JE, Watkins SC, Billiar TR, Tweardy DJ: Interleukin-6 production in hemorrhagic shock is accompanied by neutrophil recruitment and lung injury. Am J Physiol Lung Cell Mol Physiol. 1998, 275: L611-L621.
27.
go back to reference Park CS, Chung SW, Ki SY, Lim GI, Uh ST, Kim YH, Choi DI, Park JS, Lee DW, Kitaichi M: Increased levels of interleukin-6 are associated with lymphocytosis in bronchoalveolar lavage fluids of idiopathic nonspecific interstitial pneumonia. Am J Respir Crit Care Med. 2000, 162: 1162-1168. 10.1164/ajrccm.162.3.9906007.PubMedCrossRef Park CS, Chung SW, Ki SY, Lim GI, Uh ST, Kim YH, Choi DI, Park JS, Lee DW, Kitaichi M: Increased levels of interleukin-6 are associated with lymphocytosis in bronchoalveolar lavage fluids of idiopathic nonspecific interstitial pneumonia. Am J Respir Crit Care Med. 2000, 162: 1162-1168. 10.1164/ajrccm.162.3.9906007.PubMedCrossRef
28.
go back to reference Hogg JC, Chu F, Utokaparch S, Woods R, Elliott WM, Buzatu L, Cherniack RM, Rogers RM, Sciurba FC, Coxson HO, Pare PD: The nature of small-airway obstruction in chronic obstructive pulmonary disease. N Engl J Med. 2004, 350: 2645-2653. 10.1056/NEJMoa032158.PubMedCrossRef Hogg JC, Chu F, Utokaparch S, Woods R, Elliott WM, Buzatu L, Cherniack RM, Rogers RM, Sciurba FC, Coxson HO, Pare PD: The nature of small-airway obstruction in chronic obstructive pulmonary disease. N Engl J Med. 2004, 350: 2645-2653. 10.1056/NEJMoa032158.PubMedCrossRef
29.
go back to reference Kuhn C, Homer RJ, Zhu Z, Ward N, Flavell RA, Geba GP, Elias JA: Airway hyperresponsiveness and airway obstruction in transgenic mice. Morphologic correlates in mice overexpressing interleukin (IL)-11 and IL-6 in the lung. Am J Respir Cell Mol Biol. 2000, 22: 289-295. 10.1165/ajrcmb.22.3.3690.PubMedCrossRef Kuhn C, Homer RJ, Zhu Z, Ward N, Flavell RA, Geba GP, Elias JA: Airway hyperresponsiveness and airway obstruction in transgenic mice. Morphologic correlates in mice overexpressing interleukin (IL)-11 and IL-6 in the lung. Am J Respir Cell Mol Biol. 2000, 22: 289-295. 10.1165/ajrcmb.22.3.3690.PubMedCrossRef
30.
go back to reference Janssen SPM, Gayan-Ramirez G, Van Den Bergh A, Herijgers P, Maes K, Verbeken E, Decramer M: Interleukin-6 causes myocardial failure and skeletal muscle atrophy in rats. Circulation. 2005, 111: 996-1005. 10.1161/01.CIR.0000156469.96135.0D.PubMedCrossRef Janssen SPM, Gayan-Ramirez G, Van Den Bergh A, Herijgers P, Maes K, Verbeken E, Decramer M: Interleukin-6 causes myocardial failure and skeletal muscle atrophy in rats. Circulation. 2005, 111: 996-1005. 10.1161/01.CIR.0000156469.96135.0D.PubMedCrossRef
31.
go back to reference Johnston RA, Schwartzman IN, Flynt L, Shore SA: Role of interleukin-6 in murine airway responses to ozone. Am J Physiol Lung Cell Mol Physiol. 2005, 288: L390-L397.PubMedCrossRef Johnston RA, Schwartzman IN, Flynt L, Shore SA: Role of interleukin-6 in murine airway responses to ozone. Am J Physiol Lung Cell Mol Physiol. 2005, 288: L390-L397.PubMedCrossRef
32.
go back to reference Penninx BW, Kritchevsky SB, Yaffe K, Newman AB, Simonsick EM, Rubin S, Ferrucci L, Harris T, Pahor M: Inflammatory markers and depressed mood in older persons: results from the Health, Aging and Body Composition study. Biol Psychiatry. 2003, 54: 566-572. 10.1016/S0006-3223(02)01811-5.PubMedCrossRef Penninx BW, Kritchevsky SB, Yaffe K, Newman AB, Simonsick EM, Rubin S, Ferrucci L, Harris T, Pahor M: Inflammatory markers and depressed mood in older persons: results from the Health, Aging and Body Composition study. Biol Psychiatry. 2003, 54: 566-572. 10.1016/S0006-3223(02)01811-5.PubMedCrossRef
33.
go back to reference Kiecolt-Glaser JK, Glaser R: Depression and immune function: central pathways to morbidity and mortality. J Psychosom Res. 2002, 53: 873-876. 10.1016/S0022-3999(02)00309-4.PubMedCrossRef Kiecolt-Glaser JK, Glaser R: Depression and immune function: central pathways to morbidity and mortality. J Psychosom Res. 2002, 53: 873-876. 10.1016/S0022-3999(02)00309-4.PubMedCrossRef
34.
go back to reference Konsman JP, Parnet P, Dantzer R: Cytokine-induced sickness behaviour: mechanisms and implications. Trends Neurosci. 2002, 25: 154-159. 10.1016/S0166-2236(00)02088-9.PubMedCrossRef Konsman JP, Parnet P, Dantzer R: Cytokine-induced sickness behaviour: mechanisms and implications. Trends Neurosci. 2002, 25: 154-159. 10.1016/S0166-2236(00)02088-9.PubMedCrossRef
35.
go back to reference Lanquillon S, Krieg JC, Bening-Abu-Shach U, Vedder H: Cytokine production and treatment response in major depressive disorder. Neuropsychopharmacology. 2000, 22: 370-379. 10.1016/S0893-133X(99)00134-7.PubMedCrossRef Lanquillon S, Krieg JC, Bening-Abu-Shach U, Vedder H: Cytokine production and treatment response in major depressive disorder. Neuropsychopharmacology. 2000, 22: 370-379. 10.1016/S0893-133X(99)00134-7.PubMedCrossRef
36.
go back to reference Basterzi AD, Aydemir C, Kisa C, Aksaray S, Tuzer V, Yazici K, Goka E: IL-6 levels decrease with SSRI treatment in patients with major depression. Hum Psychopharmacol. 2005, 20: 473-476. 10.1002/hup.717.PubMedCrossRef Basterzi AD, Aydemir C, Kisa C, Aksaray S, Tuzer V, Yazici K, Goka E: IL-6 levels decrease with SSRI treatment in patients with major depression. Hum Psychopharmacol. 2005, 20: 473-476. 10.1002/hup.717.PubMedCrossRef
38.
go back to reference Broekhuizen R, Wouters EF, Creutzberg EC, Schols AM: Raised CRP levels mark metabolic and functional impairment in advanced COPD. Thorax. 2006, 61: 17-22.PubMedPubMedCentralCrossRef Broekhuizen R, Wouters EF, Creutzberg EC, Schols AM: Raised CRP levels mark metabolic and functional impairment in advanced COPD. Thorax. 2006, 61: 17-22.PubMedPubMedCentralCrossRef
39.
go back to reference Man SF, Connett JE, Anthonisen NR, Wise RA, Tashkin DP, Sin DD: C-reactive protein and mortality in mild to moderate chronic obstructive pulmonary disease. Thorax. 2006, 61: 849-853. 10.1136/thx.2006.059808.PubMedPubMedCentralCrossRef Man SF, Connett JE, Anthonisen NR, Wise RA, Tashkin DP, Sin DD: C-reactive protein and mortality in mild to moderate chronic obstructive pulmonary disease. Thorax. 2006, 61: 849-853. 10.1136/thx.2006.059808.PubMedPubMedCentralCrossRef
40.
go back to reference Shaaban R, Kony S, Driss F, Leynaert B, Soussan D, Pin I, Neukirch F, Zureik M: Change in C-reactive protein levels and FEV1 decline: a longitudinal population-based study. Respir Med. 2006, 100: 2112-2120. 10.1016/j.rmed.2006.03.027.PubMedCrossRef Shaaban R, Kony S, Driss F, Leynaert B, Soussan D, Pin I, Neukirch F, Zureik M: Change in C-reactive protein levels and FEV1 decline: a longitudinal population-based study. Respir Med. 2006, 100: 2112-2120. 10.1016/j.rmed.2006.03.027.PubMedCrossRef
41.
go back to reference Salvi S, Blomberg A, Rudell B, Kelly F, Sandstrom T, Holgate ST, Frew A: Acute inflammatory responses in the airways and peripheral blood after short-term exposure to diesel exhaust in healthy human volunteers. Am J Respir Crit Care Med. 1999, 159: 702-709. 10.1164/ajrccm.159.3.9709083.PubMedCrossRef Salvi S, Blomberg A, Rudell B, Kelly F, Sandstrom T, Holgate ST, Frew A: Acute inflammatory responses in the airways and peripheral blood after short-term exposure to diesel exhaust in healthy human volunteers. Am J Respir Crit Care Med. 1999, 159: 702-709. 10.1164/ajrccm.159.3.9709083.PubMedCrossRef
42.
go back to reference Maes M, Yirmiya R, Noraberg J, Brene S, Hibbeln J, Perini G, Kubera M, Bob P, Lerer B, Maj M: The inflammatory & neurodegenerative (I&ND) hypothesis of depression: leads for future research and new drug developments in depression. Metab Brain Dis. 2009, 24: 27-53. 10.1007/s11011-008-9118-1.PubMedCrossRef Maes M, Yirmiya R, Noraberg J, Brene S, Hibbeln J, Perini G, Kubera M, Bob P, Lerer B, Maj M: The inflammatory & neurodegenerative (I&ND) hypothesis of depression: leads for future research and new drug developments in depression. Metab Brain Dis. 2009, 24: 27-53. 10.1007/s11011-008-9118-1.PubMedCrossRef
43.
go back to reference Manton KG: A longitudinal study of functional change and mortality in the United States. J Gerontol. 1988, 43: S153-S161. 10.1093/geronj/43.5.S153.PubMedCrossRef Manton KG: A longitudinal study of functional change and mortality in the United States. J Gerontol. 1988, 43: S153-S161. 10.1093/geronj/43.5.S153.PubMedCrossRef
44.
go back to reference Yong V, Saito Y, Chan A: Gender differences in health and health expectancies of older adults in Singapore: an examination of diseases, impairments, and functional disabilities. J Cross Cult Gerontol. 2011, 26: 189-203. 10.1007/s10823-011-9143-0.PubMedCrossRef Yong V, Saito Y, Chan A: Gender differences in health and health expectancies of older adults in Singapore: an examination of diseases, impairments, and functional disabilities. J Cross Cult Gerontol. 2011, 26: 189-203. 10.1007/s10823-011-9143-0.PubMedCrossRef
45.
go back to reference Singapore DoS: Complete life tables 2006–2008 for Singapore resident population. 2009, Singapore Singapore DoS: Complete life tables 2006–2008 for Singapore resident population. 2009, Singapore
Metadata
Title
Systemic inflammation, depression and obstructive pulmonary function: a population-based study
Authors
Yanxia Lu
Lei Feng
Liang Feng
Ma Shwe Nyunt
Keng Bee Yap
Tze Pin Ng
Publication date
01-12-2013
Publisher
BioMed Central
Published in
Respiratory Research / Issue 1/2013
Electronic ISSN: 1465-993X
DOI
https://doi.org/10.1186/1465-9921-14-53

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