Narongpon Dumavibhat
Mahidol University
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Publication
Featured researches published by Narongpon Dumavibhat.
Inhalation Toxicology | 2012
Ryoji Hirota; Hiroyuki Nakamura; Sabah Asif Bhatti; Nlandu Roger Ngatu; Basilua Andre Muzembo; Narongpon Dumavibhat; Masamitsu Eitoku; Masayoshi Sawamura; Narufumi Suganuma
Limonene is one of the main flavonoids which is reported to inhibit the inflammatory response by suppressing the production of reactive oxygen species. The aim of this study was to evaluate whether limonene can inhibit Dermatophagoides farinae-induced airway hyperresponsiveness (AHR), eosinophilic infiltration and other histological changes in the lung, T helper (Th) 2 cytokine production and airway remodeling in a mice model of asthma. Treatment with limonene significantly reduced the levels of IL-5, IL-13, eotaxin, MCP-1, and TGF-β1 in bronchoalveolar lavage fluid. The goblet cell metaplasia, thickness of airway smooth muscle, and airway fibrosis were markedly decreased in limonene-treated mice. Furthermore, AHR to acetylcholine was significantly abrogated in limonene-treated mice. These results indicate that limonene has a potential to reduce airway remodeling and AHR in asthma model.
Journal of Occupational Health | 2013
Narongpon Dumavibhat; Tomomi Matsui; Eri Hoshino; Sasivimol Rattanasiri; Dittapol Muntham; Ryoji Hirota; Masamitsu Eitoku; Momo Imanaka; Basilua Andre Muzembo; Nlandu Roger Ngatu; Shinichi Kondo; Norihiko Hamada; Narufumi Suganuma
Radiographic Progression of Silicosis among Japanese Tunnel Workers in Kochi: Narongpon DUMAVIBHAT, et al. Department of Environmental Medicine, Kochi Medical School, Kochi University, Japan—
Industrial Health | 2018
Taro Tamura; Yukinori Kusaka; Narufumi Suganuma; Kazuhiro Suzuki; Ponglada Subhannachart; Somkiat Siriruttanapruk; Narongpon Dumavibhat; Xing Zhang; Prahalad K. Sishodiya; Tran Anh Thanh; Kurt G. Hering; John E. Parker; Eduardo Algranti; Francisco Santos O’Connor; Hisao Shida; Masanori Akira
Two hundred and thirty-three individuals read chest x-ray images (CXR) in the Asian Intensive Reader of Pneumoconiosis (AIR Pneumo) workshop. Their proficiency in reading CXR for pneumoconiosis was calculated using eight indices (X1–X8), as follows: sensitivity (X1) and specificity (X2) for pneumoconiosis; sensitivity (X3) and specificity (X4) for large opacities; sensitivity (X5) and specificity (X6) for pleural plaques; profusion increment consistency (X7); and consistency for shape differentiation (X8). For these eight indices, one-way analysis of variance (ANOVA) and Scheffe’s multiple comparison were conducted on six groups, based on the participants’ specialty: radiology, respiratory medicine, industrial medicine, public health, general internal medicine, and miscellaneous physicians. Our analysis revealed that radiologists had a significant difference in the mean scores of X3, X5, and X8, compared with those of all groups, excluding radiologists. In the factor analysis, X1, X3, X5, X7, and X8 constituted Factor 1, and X2, X4, and X6 constituted Factor 2. With regard to the factor scores of the six participant groups, the mean scores of Factor 1 of the radiologists were significantly higher than those of all groups, excluding radiologists. The two factors and the eight indices may be used to appropriately assess specialists’ proficiency in reading CXR.
American Journal of Public Health Research | 2018
Phanumas Krisorn; Naesinee Chaiear; Ponglada Subhannachart; Narongpon Dumavibhat; Sutarat Tungsagunwattana
Objective: This study aimed to examine the sensitivity and specificity of occupational health doctors (OHDs)’ reading of early-stage pneumoconiosis radiographs. Materials and Methods: A screening test was applied, and 33 OHDs consented to participate in the study. There were atotal of 67 chest radiographs, which consisted of normal and early-stage pneumoconiosis film. The cut-point for disease was set at profusion0/1 and 1/0. Mean sensitivity and specificity for small opacity detection were analyzed. Results: The median sensitivity of ILO profusion of 0/1 or above was 88% (IQR 10.3), and the median sensitivity of film with a 1/0 cutoff pointwas slightly higher at90% (IQR 10.3).The average specificity for ILO profusion of 0/1 or above was 43.3% (SD21.1). Upon increasing the cut-point at profusion1/0, the average specificity increased to 47.0% (SD 20.9). Conclusion: This study showed that occupational health doctors were able to interpret chest radiographs of workers with early-stage pneumoconiosis. This indicates that the development of OHDs’ chest X-ray reading skillsis valuable in order to improve the national pneumoconiosis surveillance system.
THE BANGKOK MEDICAL JOURNAL | 2017
Sitthiphon Bunman; Narongpon Dumavibhat; Wichai Chatthanawaree; Somboon Intalapaporn; Theerapoan Thuwachaosuan; Chatbodin Thongchuan
Burns are one of the most common causes of injuries. Thermal burns from wetsources (scalds) and dry source (fire or flame) account for 80% of all reported burns.Advances in resuscitation and good management have significantly improved survivalrates after thermal injury. Healthcare providers should understand the pathophysiologyof a burn injury and the current best practice management of wound care. This articlereviews and presents an update to the current management of burn injuries and recentadvances in burn wound care.
Occupational and Environmental Medicine | 2017
Phanumas Krisorn; Naesinee Chaiear; Ponglada Subhannachart; Narongpon Dumavibhat; Sutarat Tungsagunwattana; Krittin Silanun
Objective This study was aimed to find out the sensitivity and specificity in reading early stage pneumoconiosis radiographs by Occupational Health Doctors (OHDs). Materials and method A screening test was applied. Thirty three of OHD consented to join the study. The test radiographs consisted of 67 normal and early stage pneumoconiosis films. Before testing, all participants were introduced to basic ILO reading for 65 min by 3 B-reader ILO pneumoconiosis experts. The cut-point for disease was set at profusion 0/1 and 1/0. Mean sensitivity and specificity for small opacities detection was analysed. Results The median sensitivity of ILO profusion 0/1 or above was 88% (IQR 10.3), the median sensitivity of 1/0 cut-point film was slightly increase at 90% (IQR 10.3), while the mean specificity for ILO profusion 0/1 or above was 43.3% (SD 21.1). When stepping the cut-point to profusion 1/0, the mean specificity increased to 47.0% (SD 20.9). Conclusion This study showed that OHDs were able to interpret chest radiographs of workers who have had early stage pneumconiotic radiographs. Therefore, chest X-ray reading skill development for OHDs has value for the surveillance system in this country.
Journal of the Medical Association of Thailand Chotmaihet thangphaet | 2012
Ponglada Subhannachart; Narongpon Dumavibhat; Somkiat Siriruttanapruk
Industrial Health | 2012
Huashi Zhou; Yukinori Kusaka; Taro Tamura; Narufumi Suganuma; Ponglada Subhannachart; Somkiat Siriruttanapruk; Narongpon Dumavibhat; Xing Zhang; P.K. Sishodiya; Khuong Van Duy; Kurt G. Hering; John E. Parker; Eduardo Algranti; Igor Fedotov; Hisao Shida; Masanori Akira
Industrial Health | 2012
Huashi Zhou; Yukinori Kusaka; Taro Tamura; Narufumi Suganuma; Ponglada Subhannachart; Somkiat Siriruttanapruk; Narongpon Dumavibhat; Xing Zhang; P.K. Sishodiya; Khuong Van Duy; Kurt G. Hering; John E. Parker; Eduardo Algranti; Igor Fedotov; Hisao Shida; Masanori Akira
THE BANGKOK MEDICAL JOURNAL | 2018
Narongpon Dumavibhat; Ruchira Ruangchira-urai; Nisa Muangman; Punnarerk Thongcharoen; Sitthiphon Bunman; Apinut Jaroonpipatkul