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role of exogenous reduced glutathione on time dependent 203hg distribution in liver and kidney of a freshwater teleost, anabas testudineus.time-dependent tissue distribution of mercury(hg) was studied in a freshwater perch, anabas testudineus which revealed that the liver and kidneys are the major sites of hg retention. the role of reduced glutathione (gsh) in the clearance of hg was also investigated to evaluate the ameliorative effect of this nucleophile. for this purpose, the perch was given gsh 15 min before or after they received 203hg by injection. the fish were then sacrificed at 24 h and 48 h later. the results clearly indi ...19979099427
rapid regulatory effect of tri-iodothyronine (t3) on antioxidant enzyme activities in a fish anabas testudineus (bloch): short-term in vivo and in vitro study.the short-term action of thyroid hormone tri-iodothyronine (t3) was studied in vivo and in vitro on antioxidant enzyme activities in a teleost anabas testudineus (bloch). t3 injection in vivo (200 ng) in normal fish decreased the lipid peroxidation products and increased superoxide dismutase (sod), catalase and glutathione peroxidase (gpx) activities after 30 min. t3 in vitro (10(-6) m) increased the antioxidant activities of catalase, glutathione reductase (gr), gpx and glutathione level after ...200616955760
purification of putative thyroid hormone receptor from the ovarian nuclei of fresh water perch, anabas testudineus.perch ovarian putative t3 (3,5,3'-triiodo-l-thyroxine) receptor was purified to 580-fold by extracting the ovarian nuclear preparation with 0.4 m kcl, gel filtration on sephadex g-25, deae-sephacel chromatography and fplc superose 6 chromatography. to monitor the t3 binding protein at each purification step, aliquots from each peak protein fractions were incubated with (125)i-t3 (0.16 pmol to 3.2 nmol) in the absence or presence of 500-fold excess of unlabelled t3. maximum binding capacity (bmax ...199424197075
pituitary cytology of the freshwater teleost anabas testudineus (bloch).in the pituitary of a. testudineus the rostral pars distalis (rpd), proximal pars distalis (ppd) and pars intermedia (pi) are arranged in a rostro-caudal axis. the rostral neurohypophysis (nh) extends dorsal to the pars distalis, while the caudal part vertically penetrates into the pi and ramifies in its component. the rpd mainly consists of erythrosinophils and pgh-positive cells which are comparable to the lactotropes and corticotropes mentioned in the literature. in the nonbreeding season, ac ...19806158808
form and function of jaws during feeding: ctenopoma acutirostre, anabas testudineus and macropodus opercularis. 1979474196
behavioral changes in an air-breathing fish, anabas testudineus, exposed to malathion. 19948130421
does melatonin have a time-dependent effect on brain and gill ionic metabolism in a teleost, anabas testudineus (bloch)?exogenous administration of 0.20, 0.40 and 0.60 microg/g body weight melatonin over a 24 hr cycle caused an inhibition of na+, k+ atpase activity in both brain and gills of a. testudineus. however, ca2+ atpase activity in the brain was significantly inhibited by the highest dose, and that in the gill at all the doses of melatonin. evening injection of melatonin had an inhibitory effect on both brain and gill na+ k+ and ca2+ atpase activity. melatonin treatment in the morning for 12 hrs did not h ...200616924833
accumulation of lead and effects on total lipids and lipid derivatives in the freshwater fish anabas testudineus (bloch).exposure of a freshwater fish to several sublethal concentrations (1.25, 2.50, 5.00, 10.00, and 20.00 mg/liter) of lead for a period of 30 days showed significant accumulation of lead in the blood and tissues. lead bioaccumulated in the study showed organ-specific distribution, with high levels in the blood followed by the kidney, gill, liver, and brain and comparatively lesser amounts in the ovary and muscle tissues. the lead accumulation in tissues was found to increase with lead in water up t ...19921375146
diffusing capacity of gills of the climbing perch, anabas testudineus (bloch) in relation to body size. 19744435857
iodotyrosine synthesis by fish (anabas testudineus) kidney soluble supernatant. 19744426650
a quantitative study of the erythrocytes and haemoglobin in the blood of an air-breathing fish, anabas testudineus (bloch), in relation to its body size. 19734132197
fine structure of the respiratory surfaces of an air-breathing fish, the climbing perch anabas testudineus (bloch). 19685678023
sem study on the effects of crude oil on the gills and air breathing organs of climbing perch, anabas testudineus. 19911786459
gill lesions in the perch, anabas testudineus, subjected to sewage toxicity. 19902400839
effects of corticosteroids and protein synthesis inhibitors on activities of oxidative enzymes in a bony fish, anabas testudineus (bloch).the activities of oxidative enzymes of hepatic mitochondria of anabas testudineus increased following exogenous administration of hydrocortisone and corticosterone. the inhibitors of protein synthesis prevented the hormone-mediated increase of hepatic enzymes, suggesting that corticosteroids regulate the oxidative metabolism of this teleostean species through the protein synthetic machinery of liver.19902354770
oxidative metabolism in a teleost,anabas testudineus bloch: effect of testosterone and estradiol-17β on hepatic enzyme activities.testosterone (t) administration to maleanabas testudineus significantly stimulated the activities of cytochrome oxidase, α-glycerophosphate dehydrogenase (α-gpdh) and mg(2+) adenosine triphosphatase (mg(2+) atpase) and inhibited lactate dehydrogenase (ldh), cytosolic and mitochondrial malate dehydrogenases (mdh). the activities of succinate dehydrogenase (sdh), glucose-6-phosphate dehydrogenase (g-6-pdh) and catalase were unaffected by testosterone treatment. administration of estradiol-17β (e2) ...198924221690
influence of thyroid hormones on hepatic mitochondrial enzymes of thiouracil treated teleost anabas testudineus (bloch). 19883243587
thyroid hormone stimulation of the perch (anabas testudineus bloch) ovarian mitochondrial steroidogenesis. 19883192280
inductive changes in hepatic metallothionein profile in the climbing perch, anabas testudineus (bloch) by industrial pollutants. 19863817880
morphology and vascular anatomy of the accessory respiratory organs of the air-breathing climbing perch, anabas testudineus (bloch).the vascular organization and endothelial cell specialization of the air-breathing organs of anabas testudineus were examined by light and scanning electron microscopy of fixed tissue and vascular corrosion replicas. the vessels supplying blood to the lining of paired suprabranchial chambers and the plicated labyrinthine organs within the chambers are tripartite, having a median artery and paired, lateral veins. hundreds of respiratory islets, the functional units of gas exchange, cover the surf ...19863739954
detoxication of industrial pollutants by the glutathione glutathione-s-transferase system in the liver of anabas testudineus (bloch).the interrelationship of reduced glutathione (gsh) and glutathione-s-transferase in the liver of a freshwater climbing perch anabas testudineus (bloch) exposed to common industrial pollutants has been studied. in both short- and long-term treatments there was a concomitant decrease in reduced glutathione profile and an increase in glutathione-s-transferase activity. it may be surmised that the majority of xenobiotics of industrial origin are detoxicated by the glutathione glutathione-s-transfera ...19846236582
thyroid hormones regulate lipid metabolism in a teleost anabas testudineus (bloch).we compared the long-term action of 3,5,3'-triiodo-l-thyronine (t3) and 3,5-diiodo-l-thyronine (t2) on lipid metabolism in a teleost anabas testudineus. among the six groups of animals used in this experiment, except for the control group, all received 6-propylthiouracil (6-ptu) to create a hypothyroid state in order to analyse the action of iodothyronines on lipid metabolism. injections of 6-ptu reduced t3 concentration in the circulation by 79.6% and injections of iodothyronines enhanced the l ...199910665373
uptake and elimination of 137cs by climbing perch (anabus testudineus).this work describes the uptake and retention/biological elimination of 137cs by climbing perch (anabus testudineus) under laboratory conditions. the accumulated 137cs concentration in the whole body of the fish was measured at certain intervals up to 38 d. a significant accumulation of 137cs was found, but a steady state accumulation of 137cs was not achieved by the end of the experiment. the bioaccumulation factors and the distribution of the radionuclide in edible parts of the fish were determ ...199910568552
phenthoate-induced changes in the profiles of acetylcholinesterase and acetylcholine in the brain of anabas testudineus (bloch): acute and delayed effect.a concomitant decrease in acetylcholinesterase (ache) activity and increase in acetylcholine (ach) concentration was observed in the brain of anabas testudineus (bloch) during a 48-h phenthoate treatment. on return to phenthoate-free fresh water, the decline in enzyme activity and rise in ach concentration was found to persist for up to 20 days following exposure. normal values for brain ache activity and ach concentration were restored only after 60 days following transfer to phenthoate-free fr ...19836836603
effect of sublethal concentrations of monocrotophos on erythropoietic activity and certain hematological parameters of fish anabas testudineus (bloch). 199910475917
gonadotropin triggers the generation of proteinaceous factor in vitellogenic perch (anabas testudineus) oocyte which stimulates ovarian aromatase activity.oocytes of vitellogenic stage were collected from a. testudineus and incubated in vitro for 4 hr in the absence (control) or presence of 500 ng of piscine gonadotropic hormone (gth). after the termination of incubation, oocytes were repeatedly washed and then homogenized and ultracentrifuged at 100,000 g to obtain the supernatant fraction (100k sup). addition of 100k sup from gth treated oocytes to the oocyte incubation caused a 3-fold increase in ovarian aromatase activity as compared to the co ...19979475053
influence of gonadotropins and gonadal hormones on climbing perch thyroid nucleic acids.climbing perch thyroidal rna content fluctuated in different phases of the reproductive cycle, highest at spawning (36.08 +/- 3.69 micrograms/mg tissue) and lowest at postspawning (6.88 +/- 0.76 microgram/mg tissue) whereas dna remained unaltered. treatment of intact perch with salmon gonadotropin (sg-g100) or ovine lh for 15 days significantly stimulated thyroidal rna content. stimulatory effect of sg-g100 was greater (p less than 0.001) than lh (p less than 0.005). fsh had no such effect. gona ...19826186473
autoradiographic studies on the chronology of meiosis and spermiogenesis in a freshwater teleost fish, anabas testudineus (bloch). 19827140379
detection and localization of phosphatases, dna, glycogen, mucopolysaccharides and bound lipids in the testis of a teleost fish, anabas testudineus (bloch) during the annual cyclical changes by histochemical methods. 19826280108
role of thyroxine & gonadotropins on the mobilization of ovarian cholesterol in a teleost anabas testudineus (bloch). 19817275201
toxicity, biotransformation & elimination of endosulsfan in anabas testudineus (bloch). 19807439956
a histochemical study of the epidermis of the climbing perch, anabas testudineus (anabantidae, pisces).a histochemical investigation has been made to localize and characterize various lipid, protein, carbohydrate and enzyme constituents present within the different cell types of the epidermis of anabas testudineus. the polygonal cells contain glycogen, the amount of which gradually increases as the cells move towards the surface until they reach the most superficial layer where the amount of glycogen slightly decreases indicating the metabolically active state of these cells. the basal cells, whi ...19807424082
distribution kinetics of inorganic mercury in the subcellular fractions of fish liver.the present study tries to find out the kinetics of distribution of mercury in the different subcellular fractions of the liver in a freshwater perch anabas testudineus over a period of 48 h after a single i.m. injection of [203hg]mercuric nitrate at a dose of 4 mg/kg body weight. the fish were killed at 15 min, 2 h, 6 h and 48 h post injection. in addition the interaction of this metal with different biomolecules, viz., protein, dna and rna, was also investigated. cytosol was found to be the ma ...19938108710
effect of gonadal steroids on respiratory metabolism of anabas testudineus (bloch).the present investigation deals with the effect of gonadal steroids on the oxygen consumption (through gills only) in an air breathing fish, anabas testudineus (bloch). a good correlation (p less than 0.05) has been established between the seasonal variations in vo2 and cyclic changes in the activity of gonads in both the sexes. oxygen consumption in both the sexes of a. testudineus were studied for a period of fourteen months. vo2 of male anabas remained higher as compared to female throughout ...1979546633
two new species of trypanosomes from indian fresh water fishes. ii.two new trypanosomes, viz. trypanosoma anabasi sp. nov. from anabas testudineus (bl.) and t. cancili sp. nov. from xenentodon cancila (ham.) are described from india. both of them are monomorphic. the former is provided with a prominent undulating membrane as well as a long and well differentiated flagellum but the latter has a less defined undulating membrane with a small and extremely weak flagellum.1978727556
thyroxine formation by fish kidney soluble supernatant of anabas testudineus. 19751140297
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