Idiopathic interstitial pneumonia medical therapy
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ahmed Zaghw, M.D. [2];
Overview
As IIPs are heterogenous group of unknown interstitial lung disease with different natural history and clinical course, their management should be based on the clinical subtype. Optimal therapy for IPF is controversial as all currently available medications for IPF are severely limited by the lack of clear understanding of the natural history of IPF, the presence of various forms of study designs; heterogeneous patient groups, disputable diagnostic certainty; variable study duration; differences in medication formulation, dosage, route of administration, and duration of treatment; lack of placebo controls; variable intervals between evaluations and differing types of non quantitative assessment criteria. To date, most of treatment strategies have been based on eliminating or suppressing the inflammatory component. As no pharmacological therapy has been proven a clinical efficacy in altering or reversing the inflammatory process of IPF. The clinical trials over the past decades are hopefully held to clear the controversial dilemmas regarding which patients should be treated? When should therapy be started? What is the best treatment and how it should delivered and maintained? and how can be the treatment monitored especially that majority of patients are suffering comorbidities related functional limitations.
Medical Response of Clinical Subtypes
The following points are a general summary for the responsiveness of each subtype of IIPs:
Chronic Fibrosing IIPs
- Idiopathic Pulmonary Fibrosis
- poor response to corticosteroids and cytotoxic drugs
- Idiopathic Nonspecific Interstitial Pneumonia
- good response to corticosteroids
Acute/Subacute IIPs
- Cryptogenic Organizing Pneumonia
- good response to corticosteroids
- Acute Interstitial Pneumonia (Hamman-Rich Syndrome)]
- unknown response to corticosteroids
- Respiratory Bronchiolitis-Interstitial Lung Disease
- good response to smoking cessation but unknown response to corticosteroids
- Desquamative Interstitial Pneumonia
- good response to smoking cessation but unknown response to corticosteroids
Outline of Medical Therapy in Acute IIPs
- The main treatment for acute interstitial pneumonia (AIP) is supportive care and corticosteroids.Supportive care with Noninvasive or invasive mechanical ventilation is usually required, since most patients develop respiratory failure also the prevention of complications as venous thromboembolism, gastrointestinal bleeding and nosocomial pneumonia. The optimum dosing of glucocorticoids and its clinical benefit remains unclear, However these are widely used.
- Glucocorticoids: Once the diagnosis of AIP is made, high dose systemic glucocorticoids ( methylprednisolone 2 gm per day intravenously in divided doses) are given.[1] High dose glucocorticoid therapy are just supported by small case series with widely varying results.[2][3][4][5][6]
- Antibiotics: Empiric broad-spectrum antibiotics are given to cover any infections.
Outline of Medical Therapy in Chronic Fibrosing IIPs
- Establishment of the diagnosis is the first critical step in management as misdiagnosis can lead to inappropriate initial therapy. The second step is severity stage to guide treatment choices. Finally, a disease management plan is tailored to the disease severity and patient’s preferences. Follow up assessment is needed to refine treatment options with the disease progression. As no therapy has been proven to be efficacious in this disease, management generally includes some combination of supportive care such as supplemental oxygen and pulmonary rehabilitation, consideration for participation in clinical trials, referral for lung transplant evaluation if possible and early detection and management of comorbidities.[7][8]
General Approach
Supportive Care: The most important components of supportive care for patients with IPF are provision of supplemental oxygen (when needed), education, pulmonary rehabilitation, and vaccination against Streptococcus pneumoniae and influenza.
Supplemental oxygen: All IPF patients will at the end require supplemental oxygen, initially with exertion and then continuously. Oxygen therapy should be prescribed to enable the patients to maintain normal activity and possibly to prevent or delay the onset of secondary pulmonary hypertension in hypoxemic patients.
Education: Improved education and communication about the diagnosis, management of IPF, end of life issues and advanced directives are needed to optimize the plan of care.[9][10]
Pulmonary rehabilitation: Significant reduction in dyspnea and improvement in six-minute walk distance were reported after a pulmonary rehabilitation program[11][12][13][14][15][16]
Vaccination: Pulmonary infections are poorly tolerated in patients with interstitial lung disease, so Influenza and pneumococcal polysaccharide vaccine should be offered to patients with IPF.
Comorbidities: Prevention of gastroesophageal reflux and recurrent microaspiration and cotrolling other comorbidities may slow the progression and have an additional treatment benefit[7][17]
Gastroesophageal reflux and chronic microaspiration: GERD is an important risk factor for the development and progression of IPF,[18][19][20][21] especially that 90% of IPF patients have GERD. [22] Studies reported that use of anti-GERD medications were associated with decreased radiographic fibrosis scores on HRCT and was related to a longer survival time.[23] Those reports show that abnormal acid gastroesophageal reflux is directly linked to disease progression. However, controlled clinical trials of acid reflux treatments in IPF are needed.
Medical agents such as pirfenidone show promise, but there is insufficient evidence to recommend their general use at this time. In the past colchicine, cyclophosphamide, endothelin receptor antagonists, interferon gamma, methotrexate,cyclosporine, penicillamine) have been in case series or clinical trials. Recently there is an evidence against their routine use due to their doubtful benefit and intolerable toxicity.
- Pirfenidone: Antifibrotic agent
- Most case series and randomized trials have shown a modest beneficial effect of pirfenidone in slowing the progression of IPF.[24][25][26][27][28]
- CAPACITY 004 and 006 trials (Clinical studies Assessing Pirfenidone in idiopathic pulmonary fibrosis, showed that the higher dose of pirfenidone significantly reduced the decline in the 6 minutes walk test distance (MWTD).[29]
- A randomized trial of pirfenidone versus placebo.[30] suggested that there may be greater benefit in patients whose disease is less severe.
- Dosage and administration : 40 mg/kg per day in three divided doses. It is approved for use in patients with mild-to-moderate IPF in Japan, Europe, and Canada, but not in the United States.
- Phosphodiesterase Inhibitors: The IPF-related pulmonary hypertension may be treated with a phosphodiesterase inhibitor that might improve exercise tolerance, as in idiopathic pulmonary hypertension.[25][31][32] A trial of sildenafil may be a good option in patients with a DLCO <35 percent, echocardiographic evidence of right ventricular dysfunction, and no contraindications to sildenafil ( unstable angina, use of nitrates). Longer duration trials are needed to assess the safety and efficacy of sildenafil in the treatment of IPF.
- Methotrexate: is an antineoplastic and immunosuppressive agent, and not recommended for IPF due to lack of data of clinical benefit and the concerns about methotrexate-induced pneumonitis, which makes it difficult to distinguish pulmonary drug toxicity from progression of the IIPs. However, methotrexate can be effective in sarcoidosis induced IIPs.[33][34][35] Methotrexate may have a clinical benefit, as evidenced by radiographic and histologic assessment, in interstitial lung disease in the context of autoimmune disease as rheumatoid arthritis.[36]
- Etanercept: Antagonists of tumor necrosis factor (TNF)-alpha might be effective in IPF animal model.[41] However studies[42] failed to prove any improvement in FVC or DLCO, or in the arterial-alveolar oxygen gradient. Based on the potential side effects and lack of proven efficacy, etanercept not recommended to treat IPF. [43]
- Penicillamine: impairs collagen biosynthesis and the immune system in anima models of fibrotic lung disorders. [44][45][46][47] However experience with penicillamine in patients with IPF is limited, not encouraging and evidence of efficacy is lacking.[48][49][50]Only improvement in DLCO in fibrosing alveolitits in scleroderma (but not in other pulmonary function test parameters).[51][52] A nonrandomized prospective compared four groups of colchicine/prednisone versus penicillamine/prednisone versus D-penicillamine/colchicine/prednisone versus prednisone alone. No significant differences in survival or in lung function relative to the baseline measurement were found in any group. [53]
- Colchicine: is not recommended for treatment of IPF because evidence of efficacy is lacking. Animal model studies suggesting that colchicine may slow the fibrotic process.[54][55][56][57] However, different clinical studies, including failed to show any clinical benefit.[58][59] [60] [48]
- Cyclophosphamide: is not recommended due its toxicity and lack of proven benefit. small showed that it might be beneficial in the treatment of IPF,[61][62][63] however, one of the largest retrospective studies found no survival benefit on the combination of prednisone and oral cyclophosphamide compared prednisone alone.[64]
References
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ignored (help) - ↑ Olson, J.; Colby, TV.; Elliott, CG. (1990). "Hamman-Rich syndrome revisited". Mayo Clin Proc. 65 (12): 1538–48. PMID 2255216. Unknown parameter
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ignored (help) - ↑ Vourlekis, JS.; Brown, KK.; Cool, CD.; Young, DA.; Cherniack, RM.; King, TE.; Schwarz, MI. (2000). "Acute interstitial pneumonitis. Case series and review of the literature". Medicine (Baltimore). 79 (6): 369–78. PMID 11144035. Unknown parameter
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ignored (help) - ↑ Suh, GY.; Kang, EH.; Chung, MP.; Lee, KS.; Han, J.; Kitaichi, M.; Kwon, OJ. (2006). "Early intervention can improve clinical outcome of acute interstitial pneumonia". Chest. 129 (3): 753–61. doi:10.1378/chest.129.3.753. PMID 16537878. Unknown parameter
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ignored (help) - ↑ Avnon, LS.; Pikovsky, O.; Sion-Vardy, N.; Almog, Y. (2009). "Acute interstitial pneumonia-Hamman-Rich syndrome: clinical characteristics and diagnostic and therapeutic considerations". Anesth Analg. 108 (1): 232–7. doi:10.1213/ane.0b013e318188af7a. PMID 19095855. Unknown parameter
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ignored (help) - ↑ Quefatieh, A.; Stone, CH.; DiGiovine, B.; Toews, GB.; Hyzy, RC. (2003). "Low hospital mortality in patients with acute interstitial pneumonia". Chest. 124 (2): 554–9. PMID 12907542. Unknown parameter
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ignored (help) - ↑ 7.0 7.1 Raghu, G.; Collard, HR.; Egan, JJ.; Martinez, FJ.; Behr, J.; Brown, KK.; Colby, TV.; Cordier, JF.; Flaherty, KR. (2011). "An official ATS/ERS/JRS/ALAT statement: idiopathic pulmonary fibrosis: evidence-based guidelines for diagnosis and management". Am J Respir Crit Care Med. 183 (6): 788–824. doi:10.1164/rccm.2009-040GL. PMID 21471066. Unknown parameter
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ignored (help) - ↑ Walter, N.; Collard, HR.; King, TE. (2006). "Current perspectives on the treatment of idiopathic pulmonary fibrosis". Proc Am Thorac Soc. 3 (4): 330–8. doi:10.1513/pats.200602-016TK. PMID 16738197. Unknown parameter
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ignored (help) - ↑ Collard, HR.; Tino, G.; Noble, PW.; Shreve, MA.; Michaels, M.; Carlson, B.; Schwarz, MI. (2007). "Patient experiences with pulmonary fibrosis". Respir Med. 101 (6): 1350–4. doi:10.1016/j.rmed.2006.10.002. PMID 17107778. Unknown parameter
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ignored (help) - ↑ Daniels, CE.; Ryu, JH. (2006). "Treatment of idiopathic pulmonary fibrosis". Semin Respir Crit Care Med. 27 (6): 668–76. doi:10.1055/s-2006-957338. PMID 17195143. Unknown parameter
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ignored (help) - ↑ Holland, AE.; Hill, CJ.; Conron, M.; Munro, P.; McDonald, CF. (2008). "Short term improvement in exercise capacity and symptoms following exercise training in interstitial lung disease". Thorax. 63 (6): 549–54. doi:10.1136/thx.2007.088070. PMID 18245143. Unknown parameter
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ignored (help) - ↑ Ferreira, A.; Garvey, C.; Connors, GL.; Hilling, L.; Rigler, J.; Farrell, S.; Cayou, C.; Shariat, C.; Collard, HR. (2009). "Pulmonary rehabilitation in interstitial lung disease: benefits and predictors of response". Chest. 135 (2): 442–7. doi:10.1378/chest.08-1458. PMID 18849399. Unknown parameter
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ignored (help) - ↑ Nishiyama, O.; Kondoh, Y.; Kimura, T.; Kato, K.; Kataoka, K.; Ogawa, T.; Watanabe, F.; Arizono, S.; Nishimura, K. (2008). "Effects of pulmonary rehabilitation in patients with idiopathic pulmonary fibrosis". Respirology. 13 (3): 394–9. doi:10.1111/j.1440-1843.2007.01205.x. PMID 18399862. Unknown parameter
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ignored (help) - ↑ Salhi, B.; Troosters, T.; Behaegel, M.; Joos, G.; Derom, E. (2010). "Effects of pulmonary rehabilitation in patients with restrictive lung diseases". Chest. 137 (2): 273–9. doi:10.1378/chest.09-0241. PMID 19858229. Unknown parameter
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ignored (help) - ↑ Kozu, R.; Senjyu, H.; Jenkins, SC.; Mukae, H.; Sakamoto, N.; Kohno, S. (2011). "Differences in response to pulmonary rehabilitation in idiopathic pulmonary fibrosis and chronic obstructive pulmonary disease". Respiration. 81 (3): 196–205. doi:10.1159/000315475. PMID 20516666.
- ↑ Huppmann, P.; Sczepanski, B.; Boensch, M.; Winterkamp, S.; Schönheit-Kenn, U.; Neurohr, C.; Behr, J.; Kenn, K. (2013). "Effects of inpatient pulmonary rehabilitation in patients with interstitial lung disease". Eur Respir J. 42 (2): 444–53. doi:10.1183/09031936.00081512. PMID 23100507. Unknown parameter
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ignored (help) - ↑ Lancaster, LH.; Mason, WR.; Parnell, JA.; Rice, TW.; Loyd, JE.; Milstone, AP.; Collard, HR.; Malow, BA. (2009). "Obstructive sleep apnea is common in idiopathic pulmonary fibrosis". Chest. 136 (3): 772–8. doi:10.1378/chest.08-2776. PMID 19567497. Unknown parameter
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ignored (help) - ↑ Schachter, LM.; Dixon, J.; Pierce, RJ.; O'Brien, P. (2003). "Severe gastroesophageal reflux is associated with reduced carbon monoxide diffusing capacity". Chest. 123 (6): 1932–8. PMID 12796170. Unknown parameter
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ignored (help) - ↑ Lee, JS.; Collard, HR.; Raghu, G.; Sweet, MP.; Hays, SR.; Campos, GM.; Golden, JA.; King, TE. (2010). "Does chronic microaspiration cause idiopathic pulmonary fibrosis?". Am J Med. 123 (4): 304–11. doi:10.1016/j.amjmed.2009.07.033. PMID 20362747. Unknown parameter
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ignored (help) - ↑ Pashinsky, YY.; Jaffin, BW.; Litle, VR. (2009). "Gastroesophageal reflux disease and idiopathic pulmonary fibrosis". Mt Sinai J Med. 76 (1): 24–9. doi:10.1002/msj.20088. PMID 19170215. Unknown parameter
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ignored (help) - ↑ Raghu, G.; Yang, ST.; Spada, C.; Hayes, J.; Pellegrini, CA. (2006). "Sole treatment of acid gastroesophageal reflux in idiopathic pulmonary fibrosis: a case series". Chest. 129 (3): 794–800. doi:10.1378/chest.129.3.794. PMID 16537884. Unknown parameter
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ignored (help) - ↑ Sweet, MP.; Hoopes, C.; Golden, J.; Hays, S.; Leard, L.; Patti, M. (2006). "Prevalence of delayed gastric emptying and gastroesophageal reflux in patients with end-stage lung disease". Ann Thorac Surg. 82 (4): 1570, author reply 1570-1. doi:10.1016/j.athoracsur.2005.11.018. PMID 16996990. Unknown parameter
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ignored (help) - ↑ Lee, JS.; Ryu, JH.; Elicker, BM.; Lydell, CP.; Jones, KD.; Wolters, PJ.; King, TE.; Collard, HR. (2011). "Gastroesophageal reflux therapy is associated with longer survival in patients with idiopathic pulmonary fibrosis". Am J Respir Crit Care Med. 184 (12): 1390–4. doi:10.1164/rccm.201101-0138OC. PMID 21700909. Unknown parameter
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ignored (help) - ↑ Raghu, G.; Johnson, WC.; Lockhart, D.; Mageto, Y. (1999). "Treatment of idiopathic pulmonary fibrosis with a new antifibrotic agent, pirfenidone: results of a prospective, open-label Phase II study". Am J Respir Crit Care Med. 159 (4 Pt 1): 1061–9. doi:10.1164/ajrccm.159.4.9805017. PMID 10194146. Unknown parameter
|month=
ignored (help) - ↑ 25.0 25.1 Azuma, A.; Nukiwa, T.; Tsuboi, E.; Suga, M.; Abe, S.; Nakata, K.; Taguchi, Y.; Nagai, S.; Itoh, H. (2005). "Double-blind, placebo-controlled trial of pirfenidone in patients with idiopathic pulmonary fibrosis". Am J Respir Crit Care Med. 171 (9): 1040–7. doi:10.1164/rccm.200404-571OC. PMID 15665326. Unknown parameter
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ignored (help) - ↑ Taniguchi, H.; Ebina, M.; Kondoh, Y.; Ogura, T.; Azuma, A.; Suga, M.; Taguchi, Y.; Takahashi, H.; Nakata, K. (2010). "Pirfenidone in idiopathic pulmonary fibrosis". Eur Respir J. 35 (4): 821–9. doi:10.1183/09031936.00005209. PMID 19996196. Unknown parameter
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ignored (help) - ↑ Spagnolo, P.; Del Giovane, C.; Luppi, F.; Cerri, S.; Balduzzi, S.; Walters, EH.; D'Amico, R.; Richeldi, L. (2010). "Non-steroid agents for idiopathic pulmonary fibrosis". Cochrane Database Syst Rev (9): CD003134. doi:10.1002/14651858.CD003134.pub2. PMID 20824834.
- ↑ Okuda, R.; Hagiwara, E.; Baba, T.; Kitamura, H.; Kato, T.; Ogura, T. (2013). "Safety and efficacy of pirfenidone in idiopathic pulmonary fibrosis in clinical practice". Respir Med. 107 (9): 1431–7. doi:10.1016/j.rmed.2013.06.011. PMID 23849626. Unknown parameter
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ignored (help) - ↑ Noble, PW.; Albera, C.; Bradford, WZ.; Costabel, U.; Glassberg, MK.; Kardatzke, D.; King, TE.; Lancaster, L.; Sahn, SA. (2011). "Pirfenidone in patients with idiopathic pulmonary fibrosis (CAPACITY): two randomised trials". Lancet. 377 (9779): 1760–9. doi:10.1016/S0140-6736(11)60405-4. PMID 21571362. Unknown parameter
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ignored (help) - ↑ Azuma, A.; Nukiwa, T.; Tsuboi, E.; Suga, M.; Abe, S.; Nakata, K.; Taguchi, Y.; Nagai, S.; Itoh, H. (2005). "Double-blind, placebo-controlled trial of pirfenidone in patients with idiopathic pulmonary fibrosis". Am J Respir Crit Care Med. 171 (9): 1040–7. doi:10.1164/rccm.200404-571OC. PMID 15665326. Unknown parameter
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ignored (help) - ↑ Jackson, RM.; Glassberg, MK.; Ramos, CF.; Bejarano, PA.; Butrous, G.; Gómez-Marín, O. (2010). "Sildenafil therapy and exercise tolerance in idiopathic pulmonary fibrosis". Lung. 188 (2): 115–23. doi:10.1007/s00408-009-9209-8. PMID 20012639. Unknown parameter
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ignored (help) - ↑ Zisman, DA.; Schwarz, M.; Anstrom, KJ.; Collard, HR.; Flaherty, KR.; Hunninghake, GW.; de Andrade, J.; Anstrom, KJ.; Collard, HR. (2010). "A controlled trial of sildenafil in advanced idiopathic pulmonary fibrosis". N Engl J Med. 363 (7): 620–8. doi:10.1056/NEJMoa1002110. PMID 20484178. Unknown parameter
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ignored (help) - ↑ Pesci, A.; Bertorelli, G.; Manganelli, P.; Ambanelli, U. "Bronchoalveolar lavage analysis of interstitial lung disease in CREST syndrome". Clin Exp Rheumatol. 4 (2): 121–4. PMID 3731570.
- ↑ Lacher, MJ. (1968). "Spontaneous remission or response to methotrexate in sarcoidosis". Ann Intern Med. 69 (6): 1247–8. PMID 5725738. Unknown parameter
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ignored (help) - ↑ Lower, EE.; Baughman, RP. (1990). "The use of low dose methotrexate in refractory sarcoidosis". Am J Med Sci. 299 (3): 153–7. PMID 2316559. Unknown parameter
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ignored (help) - ↑ Scott, DG.; Bacon, PA. (1980). "Response to methotrexate in fibrosing alveolitis associated with connective tissue disease". Thorax. 35 (10): 725–31. PMID 7466720. Unknown parameter
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ignored (help) - ↑ Alton, EW.; Johnson, M.; Turner-Warwick, M. (1989). "Advanced cryptogenic fibrosing alveolitis: preliminary report on treatment with cyclosporin A.". Respir Med. 83 (4): 277–9. PMID 2692090. Unknown parameter
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ignored (help) - ↑ Venuta, F.; Rendina, EA.; Ciriaco, P.; De Giacomo, T.; Pompeo, E.; Bachetoni, A.; Ricci, C. "Efficacy of cyclosporine to reduce steroids in patients with idiopathic pulmonary fibrosis before lung transplantation". J Heart Lung Transplant. 12 (6 Pt 1): 909–14. PMID 8312314.
- ↑ Moolman, JA.; Bardin, PG.; Rossouw, DJ.; Joubert, JR. (1991). "Cyclosporin as a treatment for interstitial lung disease of unknown aetiology". Thorax. 46 (8): 592–5. PMID 1926031. Unknown parameter
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ignored (help) - ↑ Grgic, A.; Lausberg, H.; Heinrich, M.; Koenig, J.; Uder, M.; Sybrecht, GW.; Wilkens, H. (2008). "Progression of fibrosis in usual interstitial pneumonia: serial evaluation of the native lung after single lung transplantation". Respiration. 76 (2): 139–45. doi:10.1159/000108440. PMID 17851227.
- ↑ Piguet, PF.; Vesin, C. (1994). "Treatment by human recombinant soluble TNF receptor of pulmonary fibrosis induced by bleomycin or silica in mice". Eur Respir J. 7 (3): 515–8. PMID 7516893. Unknown parameter
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ignored (help) - ↑ Raghu, G.; Brown, KK.; Costabel, U.; Cottin, V.; du Bois, RM.; Lasky, JA.; Thomeer, M.; Utz, JP.; Khandker, RK. (2008). "Treatment of idiopathic pulmonary fibrosis with etanercept: an exploratory, placebo-controlled trial". Am J Respir Crit Care Med. 178 (9): 948–55. doi:10.1164/rccm.200709-1446OC. PMID 18669816. Unknown parameter
|month=
ignored (help) - ↑ Raghu, G.; Collard, HR.; Egan, JJ.; Martinez, FJ.; Behr, J.; Brown, KK.; Colby, TV.; Coardier, JF.; Flaherty, KR. (2011). "An official ATS/ERS/JRS/ALAT statement: idiopathic pulmonary fibrosis: evidence-based guidelines for diagnosis and management". Am J Respir Crit Care Med. 183 (6): 788–824. doi:10.1164/rccm.2009-040GL. PMID 21471066. Unknown parameter
|month=
ignored (help) - ↑ Ward, WF.; Shih-Hoellwarth, A.; Tuttle, RD. (1983). "Collagen accumulation in irradiated rat lung: modification by D-penicillamine". Radiology. 146 (2): 533–7. doi:10.1148/radiology.146.2.6849102. PMID 6849102. Unknown parameter
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ignored (help) - ↑ Ekimoto, H.; Aikawa, M.; Ohnuki, T.; Takahashi, K.; Matsuda, A.; Takita, T.; Umezawa, H. (1985). "Immunological involvement in pulmonary fibrosis induced by peplomycin". J Antibiot (Tokyo). 38 (1): 94–8. PMID 2579054. Unknown parameter
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ignored (help) - ↑ Molteni, A.; Ward, WF.; Ts'ao, CH.; Solliday, NH.; Dunne, M. (1985). "Monocrotaline-induced pulmonary fibrosis in rats: amelioration by captopril and penicillamine". Proc Soc Exp Biol Med. 180 (1): 112–20. PMID 2994075. Unknown parameter
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ignored (help) - ↑ Geismar, LS.; Hennessey, S.; Reiser, KM.; Last, JA. (1986). "D-penicillamine prevents collagen accumulation in lungs of rats given bleomycin". Chest. 89 (3 Suppl): 153S–154S. PMID 2419048. Unknown parameter
|month=
ignored (help) - ↑ 48.0 48.1 Selman, M.; Carrillo, G.; Salas, J.; Padilla, RP.; Pérez-Chavira, R.; Sansores, R.; Chapela, R. (1998). "Colchicine, D-penicillamine, and prednisone in the treatment of idiopathic pulmonary fibrosis: a controlled clinical trial". Chest. 114 (2): 507–12. PMID 9726738. Unknown parameter
|month=
ignored (help) - ↑ Cegla, UH. (1977). "[Treatment of idiopathic fibrosing alveolitis. Therapeutic experiences with azathioprine-prednisolone and D-penicillamine-prednisolone combination therapy]". Schweiz Med Wochenschr. 107 (6): 184–7. PMID 834991. Unknown parameter
|month=
ignored (help) - ↑ Chapela, R.; Zúñiga, G.; Selman, M. (1986). "D-penicillamine in the therapy of fibrotic lung diseases". Int J Clin Pharmacol Ther Toxicol. 24 (1): 16–7. PMID 3957484. Unknown parameter
|month=
ignored (help) - ↑ Steen, VD.; Owens, GR.; Redmond, C.; Rodnan, GP.; Medsger, TA. (1985). "The effect of D-penicillamine on pulmonary findings in systemic sclerosis". Arthritis Rheum. 28 (8): 882–8. PMID 4026885. Unknown parameter
|month=
ignored (help) - ↑ de Clerck, LS.; Dequeker, J.; Francx, L.; Demedts, M. (1987). "D-penicillamine therapy and interstitial lung disease in scleroderma. A long-term followup study". Arthritis Rheum. 30 (6): 643–50. PMID 3606683. Unknown parameter
|month=
ignored (help) - ↑ Selman, M.; Carrillo, G.; Salas, J.; Padilla, RP.; Pérez-Chavira, R.; Sansores, R.; Chapela, R. (1998). "Colchicine, D-penicillamine, and prednisone in the treatment of idiopathic pulmonary fibrosis: a controlled clinical trial". Chest. 114 (2): 507–12. PMID 9726738. Unknown parameter
|month=
ignored (help) - ↑ Raghu, G.; Brown, KK.; Bradford, WZ.; Starko, K.; Noble, PW.; Schwartz, DA.; King, TE. (2004). "A placebo-controlled trial of interferon gamma-1b in patients with idiopathic pulmonary fibrosis". N Engl J Med. 350 (2): 125–33. doi:10.1056/NEJMoa030511. PMID 14711911. Unknown parameter
|month=
ignored (help) - ↑ Dubrawsky, C.; Dubravsky, NB.; Withers, HR. (1978). "The effect of colchicine on the accumulation of hydroxyproline and on lung compliance after irradiation". Radiat Res. 73 (1): 111–20. PMID 622454. Unknown parameter
|month=
ignored (help) - ↑ Zhang, L.; Zhu, Y.; Luo, W.; Xi, P.; Yan, Y. (1992). "The protective effect of colchicine on bleomycin-induced pulmonary fibrosis in rats". Chin Med Sci J. 7 (1): 58–60. PMID 1384784. Unknown parameter
|month=
ignored (help) - ↑ Rennard, SI.; Bitterman, PB.; Ozaki, T.; Rom, WN.; Crystal, RG. (1988). "Colchicine suppresses the release of fibroblast growth factors from alveolar macrophages in vitro. The basis of a possible therapeutic approach ot the fibrotic disorders". Am Rev Respir Dis. 137 (1): 181–5. doi:10.1164/ajrccm/137.1.181. PMID 3337460. Unknown parameter
|month=
ignored (help) - ↑ Douglas, WW.; Ryu, JH.; Bjoraker, JA.; Schroeder, DR.; Myers, JL.; Tazelaar, HD.; Swensen, SJ.; Scanlon, PD.; Peters, SG. (1997). "Colchicine versus prednisone as treatment of usual interstitial pneumonia". Mayo Clin Proc. 72 (3): 201–9. doi:10.1016/S0025-6196(11)64749-6. PMID 9070193. Unknown parameter
|month=
ignored (help) - ↑ Douglas, WW.; Ryu, JH.; Schroeder, DR. (2000). "Idiopathic pulmonary fibrosis: Impact of oxygen and colchicine, prednisone, or no therapy on survival". Am J Respir Crit Care Med. 161 (4 Pt 1): 1172–8. doi:10.1164/ajrccm.161.4.9907002. PMID 10764308. Unknown parameter
|month=
ignored (help) - ↑ Douglas, WW.; Ryu, JH.; Swensen, SJ.; Offord, KP.; Schroeder, DR.; Caron, GM.; DeRemee, RA. (1998). "Colchicine versus prednisone in the treatment of idiopathic pulmonary fibrosis. A randomized prospective study. Members of the Lung Study Group". Am J Respir Crit Care Med. 158 (1): 220–5. doi:10.1164/ajrccm.158.1.9709089. PMID 9655733. Unknown parameter
|month=
ignored (help) - ↑ Kolb, M.; Kirschner, J.; Riedel, W.; Wirtz, H.; Schmidt, M. (1998). "Cyclophosphamide pulse therapy in idiopathic pulmonary fibrosis". Eur Respir J. 12 (6): 1409–14. PMID 9877500. Unknown parameter
|month=
ignored (help) - ↑ Johnson, MA.; Kwan, S.; Snell, NJ.; Nunn, AJ.; Darbyshire, JH.; Turner-Warwick, M. (1989). "Randomised controlled trial comparing prednisolone alone with cyclophosphamide and low dose prednisolone in combination in cryptogenic fibrosing alveolitis". Thorax. 44 (4): 280–8. PMID 2669218. Unknown parameter
|month=
ignored (help) - ↑ Baughman, RP.; Lower, EE. (1992). "Use of intermittent, intravenous cyclophosphamide for idiopathic pulmonary fibrosis". Chest. 102 (4): 1090–4. PMID 1395749. Unknown parameter
|month=
ignored (help) - ↑ Collard, HR.; Ryu, JH.; Douglas, WW.; Schwarz, MI.; Curran-Everett, D.; King, TE.; Brown, KK. (2004). "Combined corticosteroid and cyclophosphamide therapy does not alter survival in idiopathic pulmonary fibrosis". Chest. 125 (6): 2169–74. PMID 15189938. Unknown parameter
|month=
ignored (help)