THE STUDY OF EFFECTS OF ELECTRIC IRON WELDING FUMES ON CONDUCTING AIR WAYS OF THE RAT

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MIRZAIE R.; SARGOLZAEI AVAL F.; SARANI S.A.; ARAB M.R.; RAKHSH KHOURSHID A.; MOHAMMADI M.; IMANI H.

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Journal: KOWSAR MEDICAL JOURNAL Year:2005 | Volume:10 | Issue:Part 1 Page(s): 21-27

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Title

THE STUDY OF EFFECTS OF ELECTRIC IRON WELDING FUMES ON CONDUCTING AIR WAYS OF THE RAT

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Keywords

RESPIRATORY EPITHELIUMQ4

ALVEOLIQ4

WELDING FUMESQ4

RATQ3

HISTOCHEMISTRYQ4

Abstract

Objective: Fumes generated during electric welding are comprised a group of gases (03, CO2, CO, NO and N02) and Particulate matter (Mn, Zn, Fe and Cu), which have many harmful effects on humans. Although much research has been done in this field, there is very little information about the histopathological effects of these fumes on the lungs and trachea The aim of this study was to identify the histopathologkal effects of these fumes on the epithelium of the trachea and ALVEOLI in conditioned medium of exposure chamber. Materials and Methods: A total number of 60 male Sprague Dawley RATs were divided into two experimental (n=40) and control groups (n=20). RATs of each group were further subdivided into four (2, 4, 6 and 8 weeks) groups. Experimental RATs were exposed to fumes for 2 hour/day and 5 day/week in exposure chamber. The RATe of turn over of air in exposure chamber was fixed to 12-15/hour. The amount of welding gases and particulate matters were measured. According to the timetable, samples from the trachea and lungs were taken and paraffin blocks were prepared. Prepared sections with 5-7 mm in thickness were stained by H-E, PAS, Alcian Blue pH=2.5, Van Gaisson, PNA & WGA lectins. Data were analyzed by Kruskall Wallis and Mann Whitney tests. Results: The results of this study showed many quantitative and qualitative changes in epithelium of trachea and ALVEOLI. There were significant differences for the thickness of RESPIRATORY EPITHELIUM and interalveolar septa between experimental and control groups (P < 0.001). The number of alveolar macrophages and the amount of collagen fibers in the periphery of the bronchioles and blood vessels were increased in experimental compare to control group. The architectural disorganization and mucopolysacharide changes in the experimental group showed dysplastic changes in the epithelium. Conclusion: Although there were some early adaptative responses to fumes in RATs, it seems that WELDING FUMES can cause many structural changes in the lungs and trachea. The severity of these changes was dependent on the variety of the fumes and the duration of exposure.

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APA: Copy

MIRZAIE, R., SARGOLZAEI AVAL, F., SARANI, S.A., ARAB, M.R., RAKHSH KHOURSHID, A., MOHAMMADI, M., & IMANI, H.. (2005). THE STUDY OF EFFECTS OF ELECTRIC IRON WELDING FUMES ON CONDUCTING AIR WAYS OF THE RAT. KOWSAR MEDICAL JOURNAL, 10(Part 1), 21-27. SID. https://sid.ir/paper/32826/en

Vancouver: Copy

MIRZAIE R., SARGOLZAEI AVAL F., SARANI S.A., ARAB M.R., RAKHSH KHOURSHID A., MOHAMMADI M., IMANI H.. THE STUDY OF EFFECTS OF ELECTRIC IRON WELDING FUMES ON CONDUCTING AIR WAYS OF THE RAT. KOWSAR MEDICAL JOURNAL[Internet]. 2005;10(Part 1):21-27. Available from: https://sid.ir/paper/32826/en

IEEE: Copy

R. MIRZAIE, F. SARGOLZAEI AVAL, S.A. SARANI, M.R. ARAB, A. RAKHSH KHOURSHID, M. MOHAMMADI, and H. IMANI, “THE STUDY OF EFFECTS OF ELECTRIC IRON WELDING FUMES ON CONDUCTING AIR WAYS OF THE RAT,” KOWSAR MEDICAL JOURNAL, vol. 10, no. Part 1, pp. 21–27, 2005, [Online]. Available: https://sid.ir/paper/32826/en

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