PMID- 31222661 OWN - NLM STAT- MEDLINE DCOM- 20200101 LR - 20200225 IS - 1573-5168 (Electronic) IS - 0920-1742 (Linking) VI - 45 IP - 4 DP - 2019 Aug TI - DNA damage and physiological responses in an Indian major carp Labeo rohita exposed to an antimicrobial agent triclosan. PG - 1463-1484 LID - 10.1007/s10695-019-00661-2 [doi] AB - This study is aimed to evaluate the toxic effects of triclosan (TCS) in an Indian major carp Labeo rohita. The 96-h LC(50) value of triclosan to L. rohita was found to be 0.39 mg L(-1). Fish were exposed to two sublethal concentrations (0.039 mg L(-1), treatment I and 0.078 mg L(-1), treatment II) of TCS for 35 days, and certain hematobiochemical, antioxidant, histopathological responses were measured. Compared to the control group, there was a significant (p < 0.05) decrease in the values and genotoxicity of hematological parameters such as hemoglobin (Hb), hematocrit (Hct), and erythrocyte (RBC) in TCS-exposed fish, but the values of leucocyte count (WBC), mean corpuscular volume (MCV), and mean corpuscular hemoglobin (MCH) were found to be increased. A biphasic response in mean corpuscular hemoglobin concentration (MCHC) value was observed during the study period (35 days). Significant (p < 0.05) alterations in plasma biochemical parameters (glucose and protein), electrolytes (Na(+), K(+), and Cl(-)), and transaminases (GOT and GPT) were observed in fish treated with TCS in both treatments. Gill Na(+)/K(+)-ATPase activity was found to be decreased in fish treated with TCS in both treatments. Enzymatic and nonenzymatic antioxidant index levels have also fluctuated in all the tissues (gill, liver, and kidney). The histological lesions were comparatively more severe in the gill than the liver and kidney. Comet assay showed DNA damage on exposure at two sublethal concentrations. The present results suggest that TCS is highly toxic to fish even at sublethal concentrations. FAU - Hemalatha, Devan AU - Hemalatha D AD - Department of Zoology, PSG Arts and Science College, Avinashi Road, Civil Aerodrome Post, Coimbatore, Tamil Nadu, 641014, India. FAU - Nataraj, Bojan AU - Nataraj B AD - Unit of Toxicology, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India. FAU - Rangasamy, Basuvannan AU - Rangasamy B AD - Unit of Toxicology, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India. FAU - Shobana, Chellappan AU - Shobana C AD - Unit of Toxicology, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India. FAU - Ramesh, Mathan AU - Ramesh M AUID- ORCID: 0000-0001-9096-8274 AD - Department of Zoology, PSG Arts and Science College, Avinashi Road, Civil Aerodrome Post, Coimbatore, Tamil Nadu, 641014, India. mathanramesh@yahoo.com. LA - eng PT - Journal Article DEP - 20190620 PL - Netherlands TA - Fish Physiol Biochem JT - Fish physiology and biochemistry JID - 100955049 RN - 0 (Anti-Infective Agents) RN - 0 (Fish Proteins) RN - 0 (Water Pollutants, Chemical) RN - 4NM5039Y5X (Triclosan) RN - EC 7.2.2.13 (Sodium-Potassium-Exchanging ATPase) SB - IM MH - Animals MH - Anti-Infective Agents/*toxicity MH - *Cyprinidae/genetics/metabolism MH - DNA Damage MH - Fish Proteins/metabolism MH - Gills/drug effects/metabolism MH - Hematologic Tests MH - Kidney/drug effects/metabolism MH - Lethal Dose 50 MH - Liver/drug effects/metabolism MH - Sodium-Potassium-Exchanging ATPase/metabolism MH - Triclosan/*toxicity MH - Water Pollutants, Chemical/*toxicity OTO - NOTNLM OT - Biomarkers OT - Comet assay OT - Labeo rohita OT - Oxidative stress OT - Sublethal OT - Triclosan EDAT- 2019/06/22 06:00 MHDA- 2020/01/02 06:00 CRDT- 2019/06/22 06:00 PHST- 2018/09/18 00:00 [received] PHST- 2019/05/20 00:00 [accepted] PHST- 2019/06/22 06:00 [pubmed] PHST- 2020/01/02 06:00 [medline] PHST- 2019/06/22 06:00 [entrez] AID - 10.1007/s10695-019-00661-2 [pii] AID - 10.1007/s10695-019-00661-2 [doi] PST - ppublish SO - Fish Physiol Biochem. 2019 Aug;45(4):1463-1484. doi: 10.1007/s10695-019-00661-2. Epub 2019 Jun 20.