NDLI: Paper and Pulp Mill Effluent-Induced Immunotoxicity in Freshwater Fish Channa punctatus (Bloch)

Content Provider	Springer Nature Link
Author	Fatima, M. Ahmad, I. Siddiqui, R. Raisuddin, S.
Copyright Year	2001
Abstract	The influence of temperature variation on the humoral immune response using the plaque-forming cell (PFC) assay in freshwater fish Channa punctatus (Bloch) was investigated. The fish was exposed to 1% concentration (v/v in water) of paper and pulp mill effluent under standard laboratory conditions in glass aquaria. Effect of effluent exposure on the organ weight and organ cellularity was also evaluated. In general, lower temperature in winter produced a subdued response in control as well as experimental group. At higher temperature of summer and rainy seasons, an elevated response was observed. It was revealed that though suppressive effect of effluent was evident during all the seasons, in summer, extent of suppression was greater as compared to winter. Paper and pulp mill effluent exposure resulted in a decrease in the splenic and pronephric (head kidney) cellularity, with more pronounced effect in the summer season. We also studied the effects of the length of exposure on various parameters. Fish were exposed for 15, 30, 60, and 90 days to effluent. Short-term exposure for 15 days induced an elevated PFC response, but change was not statistically significant. Conversely, the exposure for 30, 60, and 90 days significantly reduced (p < 0.05–0.001) the PFC response. Long-term exposure also caused significant reduction (p < 0.05–0.01) in the weights of lymphoid organs (spleen, head kidney, and total kidney). These results show a suppressive effect of chemical constituents of paper and pulp mill effluent on the immune functions. Furthermore, results demonstrated that though modulatory effect of the temperature on immune functions is recognized, it was not a major contributory factor to the elevated immunotoxicity of paper and pulp mill effluent in the seasons of high temperature.
Starting Page	271
Ending Page	276
Page Count	6
File Format	PDF
ISSN	00904341
Journal	Archives of Environmental Contamination and Toxicology
Volume Number	40
Issue Number	2
e-ISSN	14320703
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-02-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Pollution Health, Toxicology and Mutagenesis Medicine Toxicology

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