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Öğe Allergic granulomatosis and angiitis in the absence of asthma and blood eosinophilia: a rare presentation of limited Churg-Strauss syndrome(Springer Heidelberg, 2004) Sevinc, A; Hasanoglu, HC; Gokirmak, M; Yildirim, Z; Baysal, T; Mizrak, BAllergic granulomatosis and angiitis, also known as Churg-Strauss syndrome (CSS), is an uncommon vasculitis of unknown etiology. We report a 21-year-old male patient with fatigue, dry cough, and progressive dyspnea. He had no history of asthma or eosinophilia. Thorax computed tomography showed bullous/cystic areas with thin walls in varying sizes (5-15 mm). Histopathological examination of the open lung biopsy revealed granulomatous infiltration with histiocytes and eosinophilic leukocytes. This extremely rare variant of CSS is discussed.Öğe Apricot sulfurization: An occupation that induces an asthma-like syndrome in agricultural environments(Wiley, 2003) Koksal, N; Hasanoglu, HC; Gokirmak, M; Yildirim, Z; Gultek, ABackground Several cases of bronchial asthma have been presenting with acute attacks during the seasons of apricot sulfurization. The aim of this study was to reveal the effects of sulfur dioxide (SO2) exposure on the airways of the workers involved in this process. Methods SO2 levels in air were measured on 15 apricot farms, while the symptom scores of 69 workers were recorded before, during, and after SO2 exposure. Physical examination and pulmonary function tests (PFT) of the workers were also done prior to and after exposure periods. Results The measured SO2 concentrations ranged between 106.6 and 721.0 ppm. Dyspnea (80%), cough (78%), and eye and nose irritation (83-70%) were the most commonly observed symptoms. The workers had significant decreases in pulmonary functions after SO2 exposure. Decrements in FEV1, FEV1/FVC%, and FEF25-75% showed that the acute effect of SO2 on pulmonary functions of the workers was mostly of obstructive pattern. Conclusions Acute exposure to SO2 induces asthma-like syndrome (ALS) in apricot sulfurization workers. SO2 which has not been previously reported in agricultural environments as a cause of ALS may be considered as a new agent. (C) 2003 Wiley-Liss, Inc.(dagger).Öğe Effects of Ranitidine on pulmonary function tests of patients with chronic obstructive pulmonary disease(Academic Press Ltd- Elsevier Science Ltd, 2003) Hasanoglu, HC; Yidirim, Z; Hasanoglu, A; Ozcan, C; Gokirmak, M; Koksal, N; Kalkan, SSince the incidence of peptic ulcer and gastroesophageal reflux (GER) is more common in patients with chronic obstructive pulmonary disease (COPD) than normal population, H-2 receptor blockers are given more extensively to COPD patients. This study evaluated the effects of Ranitidine on pulmonary function tests (PFT) of the patients having COPD and peptic ulcer or GER, and of healthy volunteers. Fifty milligrams of Ranitidine was given intravenously to 30 COPD patients and 25 healthy volunteers. PFT were done before and 15, 30, 60, 120 min after Ranitidine injection. Although mean forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1) and forced midexpiratory flow rate (FEF25-75%) Of COPD patients were found to be decreased 60 and 120 min after Ranitidine injection, the decrements were statistically insignificant. The decrements in PFT of healthy volunteers were also not statistically significant. H-2 receptor blockers can be used safely for treatment of gastrointestinal disorders in COPD patients who have mild or moderate obstruction. Minimal decreases in FEV1 and FVC due to treatment by H-2 receptor blockers may clinically worsen COPD patients who have severe obstruction. (C) 2003 Elsevier Science Ltd. All rights reserved.Öğe Environmental exposure to asbestos in eastern Turkey(Heldref Publications, 2003) Hasanoglu, HC; Gokirmak, M; Baysal, T; Yildirim, Z; Koksal, N; Onal, YIn this study, the authors investigated the prevalence of asbestos-related disorders among the inhabitants of Guzelyurt, a town in Malatya, located in eastern Turkey. The authors examined river bed, white soil, and stucco samples taken from various locales in Guzelyurt, and they confirmed the presence of tremolite and chrysotile asbestos fibers. Subjects (N = 920; 449 males and 471 females) were examined by photofluoroscopy. Eighty-five patients (9.2%) had asbestos-related radiological findings; risk increased with age. Calcified pleural plaques were seen more frequently in individuals greater than or equal to 50 yr of age, compared with younger subjects (p < 0.01). Asbestos-related disorders were prevalent in the inhabitants of Guzelyurt, the population of which is exposed environmentally to asbestos-primarily the result of the stuccoing and whitewashing of houses with soil that contains asbestos.Öğe The role of nitric oxide and cytokines in asthma-like syndrome induced by sulfur dioxide exposure in agricultural environment(Elsevier, 2003) Koksal, N; Yildirim, Z; Gokirmak, M; Hasanoglu, HC; Mehmet, N; Avci, HBackground: We previously demonstrated that apricot sulfurization workers are exposed to high concentrations of SO2, subsequently causing asthma-like syndrome. This study investigated the effects of SO, exposure on serum TNF-alpha, IL-1beta, IL-6, IL-8, nitrite and nitrate levels to understand the mechanism of SO-induced bronchoconstriction in asthma-like syndrome. Methods: We measured the serum levels of the cytokines, direct nitrite, total nitrite and nitrate obtained from 40 volunteer workers after an hour of exposure to SO2 and 23 healthy controls. Results: The concentrations of the cytokines, direct nitrite, total nitrite and nitrate were significantly (p < 0.0001) higher in the workers than in the controls. The mean serum concentrations of TNF-alpha, IL-1beta, IL-6, IL-8, direct nitrite, total nitrite and nitrate were 430.60 +/- 397.03 pg/ml, 436.67 +/- 316.31 pg/ml, 752.11 +/- 394,95 pg/ml, 262.12 +/- 287.99 pg/ml, 7.75 +/- 3.34 mumol/l, 115.72 +/- 48.78 mumol/l and 107.97 +/- 46.19 mumol/l in the workers, while they were 9.83 +/- 3.12 pg/ml, < 5 pg/ml, 7.49 +/- 1.27 pg/ml, 9.38 +/- 1.99 pg/ml, 2.17 +/- 0.77 mumol/l, 59.91 +/- 7.56 mumol/l and 57.74 +/- 7.20 mumol/l in the controls, respectively. Conclusion: These results show that TNF-alpha, IL-1beta, IL-6, IL-8 and nitric oxide may play a role in the pathogenesis of bronchoconstriction in asthma-like syndrome due to the SO2 exposure. (C) 2003 Elsevier B.V. All rights reserved.Öğe The role of oxidative stress in bronchoconstriction due to occupational sulfur dioxide exposure(Elsevier, 2003) Gokirmak, M; Yildirim, Z; Hasanoglu, HC; Koksal, N; Mehmet, NBackground: We previously showed that apricot sulfurization workers (ASW) are exposed to high concentrations of SO2, resulting in an asthma-like syndrome. The aim of this study was to evaluate whether oxidative stress plays a role in the pathogenesis of asthma-like syndrome due to the high concentrations of SO2 exposure in agricultural environment. Methods: Serum antioxidant enzyme activities and malondialdehyde (MDA) concentrations, which are markers of lipid peroxidation, and pulmonary function tests (PFT) were measured in 40 volunteer ASW and compared to 20 healthy control subjects. Results: The superoxide dismutase (SOD, 2.2 +/- 0.6 vs. 3.2 +/- 0.7 U/m), glutathione peroxidase (GSH-Px, 0.6 +/- 0.3 vs. 1.1 +/- 0.3 U/m) and catalase (107.6 +/- 27.4 vs. 152.6 +/- 14.3 k/l) activities in ASW were significantly (p < 0.0001) lower than controls, whereas the malondialdehyde concentration (4.1 +/- 0.9 vs. 1.9 +/- 5.3 nmol/l) was higher in ASW (p < 0.0001). ASW had significant decreases in pulmonary function parameters after exposure. Conclusion: These results show that occupational exposure to high concentrations of SO2 enhances oxidative stress and lipid peroxidation may be considered as a new mechanism of SO2-induced bronchoconstriction. (C) 2003 Elsevier Science B.V. All rights reserved.Öğe Serum adenosine deaminase activities in lung cancer and mesothelioma(Pergamon-Elsevier Science Ltd, 1999) Yildirim, Z; Hasanoglu, HC; Akyol, Ö; Gokirmak, M; Köksal, N[Abstract Not Available]Öğe Tumor markers in sputum of patients with bronchioloalveolar carcinoma(Amer Coll Chest Physicians, 1998) Hasanogly, HC; Yildirim, Z; Gokirmak, M[Abstract Not Available]
