Effects of simvastatin on bleomycin-induced pulmonary fibrosis in female rats. 2012

Baykal Tulek, and Esen Kiyan, and Aysel Kiyici, and Hatice Toy, and Hulagu Bariskaner, and Mecit Suerdem
Department of Pulmonary Medicine, Selcuklu Faculty of Medicine, Selcuk University, Konya, Turkey. baykaltulek@yahoo.com

Statins reduce cholesterol levels by inhibiting 3-hydroxy-3-methylglutaryl coenzyme A reductase and have a major place in the treatment of atherosclerotic disease. Recent studies have shown anti-inflammatory properties of statins. The purpose of this study was to evaluate the anti-inflammatory effect of simvastatin on bleomycin (BLM)-induced pulmonary fibrosis in rats. A total of 31 female Sprague-Dawley rats were divided into four groups: (1) intratracheal (IT) phosphate-buffered saline (PBS) + intraperitoneal (IP) PBS (n=7); (2) IT BLM + IP PBS (n=8); (3) IT BLM + low dose (LD) simvastatin (1 mg/kg daily, n=8); (4) IT BLM + high dose (HD) simvastatin (5 mg/kg daily, n=8). Simvastatin was administered IP for 15 days, beginning 1 day prior to IT BLM. The effect of simvastatin on pulmonary fibrosis was studied by measurements of IL-13, PDGF, IFN-γ, TGF-p1 levels in bronchoalveolar lavage (BAL) fluid and lung tissue hydroxyproline (HPL) content and by histopathological examination (Ashcroft score). BLM caused significant change in BAL fluid cytokine levels and increased both HPL content and histopathological score (p<0.001 for all). While LD simvastatin had no effect on cytokine levels, HD significantly reduced IL-13 (15.12 ±7.08 pg/ml vs. 4.43±2.34 pg/mL; p<0.05) and TGF-β1 levels (269.25 ±65.42 pg/mL vs. 131.75±32.65 pg/mL; p<0.05). Neither HD nor LD simvastatin attenuated HPL content or Ashcroft score. In conclusion, this study showed that LD simvastatin had no effect on a BLM-induced pulmonary fibrosis model, while the high dose caused partial improvement in profibrotic cytokine levels.

UI MeSH Term Description Entries
D011658 Pulmonary Fibrosis A process in which normal lung tissues are progressively replaced by FIBROBLASTS and COLLAGEN causing an irreversible loss of the ability to transfer oxygen into the bloodstream via PULMONARY ALVEOLI. Patients show progressive DYSPNEA finally resulting in death. Alveolitis, Fibrosing,Idiopathic Diffuse Interstitial Pulmonary Fibrosis,Fibroses, Pulmonary,Fibrosis, Pulmonary,Pulmonary Fibroses,Alveolitides, Fibrosing,Fibrosing Alveolitides,Fibrosing Alveolitis
D001761 Bleomycin A complex of related glycopeptide antibiotics from Streptomyces verticillus consisting of bleomycin A2 and B2. It inhibits DNA metabolism and is used as an antineoplastic, especially for solid tumors. BLEO-cell,Blanoxan,Blenoxane,Bleolem,Bleomicina,Bleomycin A(2),Bleomycin A2,Bleomycin B(2),Bleomycin B2,Bleomycin Sulfate,Bleomycins,Bleomycinum Mack,Bléomycine Bellon,BLEO cell,BLEOcell,Bellon, Bléomycine,Mack, Bleomycinum,Sulfate, Bleomycin
D001992 Bronchoalveolar Lavage Fluid Washing liquid obtained from irrigation of the lung, including the BRONCHI and the PULMONARY ALVEOLI. It is generally used to assess biochemical, inflammatory, or infection status of the lung. Alveolar Lavage Fluid,Bronchial Lavage Fluid,Lung Lavage Fluid,Bronchial Alveolar Lavage Fluid,Lavage Fluid, Bronchial,Lavage Fluid, Lung,Pulmonary Lavage Fluid,Alveolar Lavage Fluids,Bronchial Lavage Fluids,Bronchoalveolar Lavage Fluids,Lavage Fluid, Alveolar,Lavage Fluid, Bronchoalveolar,Lavage Fluid, Pulmonary,Lavage Fluids, Alveolar,Lavage Fluids, Bronchial,Lavage Fluids, Bronchoalveolar,Lavage Fluids, Lung,Lavage Fluids, Pulmonary,Lung Lavage Fluids,Pulmonary Lavage Fluids
D004195 Disease Models, Animal Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases. Animal Disease Model,Animal Disease Models,Disease Model, Animal
D004353 Drug Evaluation, Preclinical Preclinical testing of drugs in experimental animals or in vitro for their biological and toxic effects and potential clinical applications. Drug Screening,Evaluation Studies, Drug, Pre-Clinical,Drug Evaluation Studies, Preclinical,Drug Evaluations, Preclinical,Evaluation Studies, Drug, Preclinical,Evaluation, Preclinical Drug,Evaluations, Preclinical Drug,Medicinal Plants Testing, Preclinical,Preclinical Drug Evaluation,Preclinical Drug Evaluations,Drug Screenings,Screening, Drug,Screenings, Drug
D005260 Female Females
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000893 Anti-Inflammatory Agents Substances that reduce or suppress INFLAMMATION. Anti-Inflammatory Agent,Antiinflammatory Agent,Agents, Anti-Inflammatory,Agents, Antiinflammatory,Anti-Inflammatories,Antiinflammatories,Antiinflammatory Agents,Agent, Anti-Inflammatory,Agent, Antiinflammatory,Agents, Anti Inflammatory,Anti Inflammatories,Anti Inflammatory Agent,Anti Inflammatory Agents
D017207 Rats, Sprague-Dawley A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company. Holtzman Rat,Rats, Holtzman,Sprague-Dawley Rat,Rats, Sprague Dawley,Holtzman Rats,Rat, Holtzman,Rat, Sprague-Dawley,Sprague Dawley Rat,Sprague Dawley Rats,Sprague-Dawley Rats
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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