tranilast and Chronic-Disease

Fibrosis and excessive extracellular matrix production are characteristic features of lacrimal gland chronic GVHD (cGVHD). Tranilast (n-[3,4-anthoranilic acid]), used for fibrotic skin disease, inhibits transforming growth factor-beta-induced matrix production. We conducted a non-randomized study comparing 8 patients (five men, three women; median age, 47 years) given topical tranilast with 10 patients (three men, seven women; median age, 37 years) receiving therapy with topical artificial tears, sodium hyaluronate and vitamin A for mild ocular cGVHD. The tranilast group instilled topical tranilast and artificial tears q.i.d., beginning the day of dry eye diagnosis. The ocular surface and tear dynamics of each patient were evaluated before hematopoietic stem cell transplant, at the onset of dry eye and after 3 months of treatment. At 3 months, the scores of the Rose Bengal test and Schirmer test with nasal stimulation had significantly improved in the tranilast group compared with that in the control group (P<0.05). Furthermore, although five control patients (50%) developed severe dry eye within the treatment period, only one tranilast-treated patient (12.5%) did; the rest still had mild dry eye (P<0.05). These results suggest the hypothesis that topical tranilast may effectively retard the progression of mild dry eye associated with cGVHD.

Topics: Adult; Anti-Allergic Agents; Chronic Disease; Dry Eye Syndromes; Female; Graft vs Host Disease; Hematologic Neoplasms; Hematopoietic Stem Cell Transplantation; Humans; Male; Middle Aged; Ophthalmic Solutions; ortho-Aminobenzoates; Tears

The current investigation was taken to scrutinize the action of tranilast on the airway remodeling in chronic asthma in mice.. Intraperitoneal injection of ovalbumin was applied to mice for sensitization and subsequent inhalation of 1% ovalbumin three times week for 10 weeks for challenge. Beclomethasone or tranilast were given daily for the 10 week challenge period. At the end of the study, lung weight index, total collagen content, bronchoalveolar lavage level of total and differential cell counts, interleukin-13, in addition to lung tissue nitrate/nitrite and transforming growth beta-1 were measured. Also, histological analysis was done.. Asthmatic mice demonstrated apparent fibrotic changes. Significant airway fibrosis was demonstrated by hyperplasia of goblet cells and thickening of airway epithelium, increased content of lung collagen, lung and bronchoalveolar lavage of transforming growth factor beta-1 and interleukin-13 mutually accompanied by reduction in nitrate/nitrite generation.. Beclomethasone influence on airway remodeling was mediated mainly via suppression of eosinophilic recruitment into the airways and reduction of interleukin-13 cytokine levels. Whereas, tranilast effects on airway remodeling was found to be mainly mediated via its inhibitory effect on transforming growth beta-1. Both beclomethasone and tranilast influence airway remodeling by different degrees and mechanisms.

Topics: Airway Remodeling; Animals; Anti-Allergic Agents; Anti-Asthmatic Agents; Asthma; Beclomethasone; Bronchoalveolar Lavage Fluid; Chronic Disease; Collagen; Disease Models, Animal; Drug Evaluation, Preclinical; Interleukin-13; Leukocyte Count; Lung; Male; Mice; Nitric Oxide; ortho-Aminobenzoates; Transforming Growth Factor beta1

Topics: Animals; Cell Division; Chronic Disease; Coronary Disease; Cyclosporine; Graft vs Host Disease; Heart Transplantation; Male; ortho-Aminobenzoates; Platelet Aggregation Inhibitors; Postoperative Complications; Rats; Rats, Inbred ACI; Rats, Inbred Strains; Trachea; Transplantation, Heterotopic; Transplantation, Homologous