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https://www.readbyqxmd.com/read/28431974/unique-mitochondrial-localization-of-arginase-1-and-2-in-hepatocytes-of-air-breathing-walking-catfish-clarias-batrachus-and-their-differential-expression-patterns-under-hyper-ammonia-stress
#1
Bodhisattwa Banerjee, Debaprasad Koner, Priyanka Lal, Nirmalendu Saha
Arginase (ARG) catalyzes the final step of ornithine-urea cycle (OUC) leading to a conversion of L-arginine to L-ornithine and urea. Several isoforms of ARG have been reported in vertebrates, out of which the two predominant isoforms are the cytosolic ARG1 and the mitochondrial ARG2. The air-breathing walking catfish (Clarias batrachus) is frequently being challenged by different environmental insults such as hyper-ammonia, dehydration and osmotic stresses in their natural habitats throughout the year. The present study investigated the active presence of ARG1 and ARG2 isoforms in hepatocytes along with unique localization of both the isoforms inside the mitochondria, and also their specific expression patterns under hyper-ammonia stress (5mM NH4Cl) in isolated hepatocytes of walking catfish...
April 18, 2017: Gene
https://www.readbyqxmd.com/read/28341541/pro-resolving-actions-of-spm-in-adipose-tissue-biology
#2
REVIEW
Joan Clària, Cristina López-Vicario, Bibiana Rius, Esther Titos
White adipose tissue plays an important endocrine role in balancing metabolic homeostasis. During conditions of nutrient excess, as occurs in obesity, there is an expansion of adipose tissue mass associated with a state of "low-grade" inflammation in this tissue. This chronic, unresolved inflammation of adipose tissue is deleterious and leads to many pathological sequelae associated with obesity including insulin resistance, type 2 diabetes and non-alcoholic fatty liver disease. Recently, a novel genus of anti-inflammatory and pro-resolving lipid mediators endogenously generated from membrane phospholipid-derived polyunsaturated fatty acids has been identified during the resolution phase of acute inflammation...
March 24, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28322767/cloning-localization-and-differential-expression-of-neuropeptide-y-during-early-brain-development-and-gonadal-recrudescence-in-the-catfish-clarias-gariepinus
#3
Cheni-Chery Sudhakumari, Arumugam Anitha, Raju Murugananthkumar, Dinesh Kumar Tiwari, Dharavath Bhasker, Balasubramanian Senthilkumaran, Aparna Dutta Gupta
Neuropeptide-Y (NPY) has diverse physiological functions which are extensively studied in vertebrates. However, regulatory role of NPY in relation to brain ontogeny and recrudescence with reference to reproduction is less understood in fish. Present report for the first time evaluated the significance of NPY by transient esiRNA silencing and also analyzed its expression during brain development and gonadal recrudescence in the catfish, Clarias gariepinus. As a first step, full-length cDNA of NPY was cloned from adult catfish brain, which shared high homology with its counterparts from other teleosts upon phylogenetic analysis...
March 17, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28285354/endocrine-disruption-oxidative-stress-and-testicular-damage-induced-by-4-nonylphenol-in-clarias-gariepinus-the-protective-role-of-cydonia-oblonga
#4
Alaa El-Din H Sayed, Rania F K Ismail
Exposure to xenoestrogens like 4-nonylphenol (NP) is recognized by disrupting endocrine functions and causes reproductive dysfunction in male fish. The present study aimed at investigating the 4-nonylphenol propensity to induce oxidative stress and hormonal disturbances in male catfish and at studying the protective role of quince (Cydonia oblonga). To fulfill this aim, catfish Clarias gariepinus were exposed to pure 100 μg/L 4-NP and to quince the leaf extract added to 4-NP, both for 15 days. The 4-NP exposure induced a marked increase in 17ß-estradiol (E2), LH, and cortisol, while thyroid hormone (TSH, T3), testosterone (T), and FSH levels noticeably decreased; however, 4-NP had no effect on T4 level...
March 11, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28265363/comparison-of-proximate-composition-and-sensory-attributes-of-clariid-catfish-species-of-clarias-gariepinus-heterobranchus-bidorsalis-and-their-hybrids
#5
Wasiu A Olaniyi, Olukayode A Makinde, Ofelia G Omitogun
Clariid catfish are favorite food fish especially in African and Asian continents. Recently there has been preference for particular species or hybrids of these species based on quality assurance and value addition. Consequently, this study aimed to evaluate the possible effect of different catfish species and their hybrids on proximate composition and sensory attributes. Catfish species, Clarias gariepinus (CC), Heterobranchus bidorsalis (HH), with their hybrid (CH), and reciprocal hybrid (HC) were evaluated for sensory variables - cognitive (sweet, salty, sour, bitter, and recent characteristic taste 'umami') and qualitative (texture, aroma, flavor, and color) tests; and nutritional variables - proximate composition (moisture, protein, ether/fat, and ash)...
March 2017: Food Science & Nutrition
https://www.readbyqxmd.com/read/28247501/temperature-preference-and-sex-differentiation-in-african-catfish-clarias-gariepinus
#6
Saïdou Santi, Carole Rougeot, Aboubacar Toguyeni, Vincent Gennotte, Ibrahima Kebe, Charles Melard
The African catfish Clarias gariepinus has a genetic sex determination system in which high temperature induces masculinization. The thermosensitive period for sex differentiation is short and occurs very early (from 6 to 8 days posthatching [dph]). As young juveniles can encounter high masculinizing temperature (36.5°C) in African water points, we aimed to determine the thermal preference of sexually undifferentiated juveniles and investigate if they spontaneously move toward high masculinizing temperature...
March 1, 2017: Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology
https://www.readbyqxmd.com/read/28247155/purification-and-development-of-elisas-for-two-forms-of-vitellogenin-in-indian-walking-catfish-clarias-batrachus-l
#7
S Mahapatra, Sk Kabita, D Bhattacharya, S Sarkar, S K Juin, S Maitra, P Nath
Two forms of vitellogenin (Vg: Vg1 and Vg2) were purified from the plasma of estradiol-17β (E2)-treated Indian walking catfish, Clarias batrachus, by gel filtration and adsorption chromatography. Native Vg1 and Vg2 had apparent molecular masses of 375 and 450 kDa, respectively, and both Vgs resolved into two similar major bands (95 and 67 kDa) in SDS-PAGE under reducing condition. Polyclonal antisera raised against each form of Vg were absorbed with a combination of hypophysectomized male catfish serum proteins and alternate Vg to ensure specificity...
February 28, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28239492/performance-of-clarias-gariepinus-fed-dried-brewer-s-yeast-saccharomyces-cerevisiae-slurry-in-replacement-for-soybean-meal
#8
Shola Gabriel Solomon, Gabriel Arome Ataguba, Gabriel Enemona Itodo
Following disparity of earlier results, this study tested the performance of African catfish Clarias gariepinus fed dried brewer's yeast slurry meal (DBYM) based diets. Fingerlings of C. gariepinus with pooled mean initial weight of 1.58 ± 0.01 g were stocked in hapas (1 m × 1 m × 1 m) immersed in an earthen pond at a density of 15 fish per cage. Five diets with increasing substitution of soybean meal with 25%, 50%, 75%, and 100% of dried brewer's yeast and a control without dried brewer's yeast (0% substitution) were evaluated for 8 weeks...
2017: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/28221854/effects-of-fish-derived-biological-preservatives-on-cold-storage-of-grass-carp-ctenopharyngodon-idellus-fillets
#9
Tingting Li, Yang Jiang, Gaowei Jin, Qiancheng Zhao, Jianrong Li
Two kinds of fish-derived natural antimicrobial substances, protamine and catfish ( Clarias fuscus ) epidermal mucus extract (CEME), were evaluated for their effect on the quality of grass carp fillets. Fillets were atmosphere packaged in cast polypropylene bags and were stored at 4°C in a low-temperature incubator without light. Solutions (0.5%, wt/vol) of CEME and protamine were used for dip pretreatment, respectively. Bacteriological (aerobic plate count, Shewanella putrefaciens , Pseudomonas fluorescens ) and physicochemical (pH, total volatile basic nitrogen, K value, surface color, texture profiles, water distribution) parameters and volatile odor compounds were measured on days 0, 3, 6, 9, 12, and 15...
October 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28181037/de-novo-transcriptome-characterization-and-growth-related-gene-expression-profiling-of-diploid-and-triploid-bighead-catfish-clarias-macrocephalus-g%C3%A3-nther-1864
#10
Satid Chatchaiphan, Prapansak Srisapoome, Jin-Hyoung Kim, Robert H Devlin, Uthairat Na-Nakorn
To enhance understanding of triploid gene expression, the transcriptome information from bighead catfish (Clarias macrocephalus Günther, 1864) was studied using the paired-end Illumina HiSeq™ 2000 sequencing platform. In total, 68,227,832 raw reads were generated from liver tissues and 53,149 unigenes were assembled, with an average length of 765 bp and N50 length of 1283 bp. Of these unigenes, 33,428 (62.89%) could be annotated according to their homology with matches in the NCBI non-redundant (Nr), NCBI nucleotide (Nt), Swiss-Prot, Clusters of Orthologous Groups (COG), gene ontology (GO), or Kyoto Encyclopedia of Genes and Genomes (KEGG) databases...
February 2017: Marine Biotechnology
https://www.readbyqxmd.com/read/28113117/induction-of-apoptosis-and-dna-damage-by-4-nonylphenol-in-african-catfish-clarias-gariepinus-and-the-antioxidant-role-of-cydonia-oblonga
#11
Alaa El-Din H Sayed, Heba S Hamed
In this study, we assessed the toxic effects of sub lethal concentration (0.1mgl(-1)) 4-nonylphenol (4-NP) on serum biochemical parameters, liver lipid peroxidation (LPO) and antioxidant enzymes of the African catfish Clarias gariepinus for 14 days and the ability of the quince leaf extract to alleviate the effects of (4-NP). Fish were categorized into four groups: control, exposure to 0.1mgl(-1) 4-NP, exposure to 0.1mgl(-1) 4-NP with quince leaf extract (10ml/30L water), and exposure to 0.1mgl(-1) 4-NP with quince leaf extract (20ml/30L water)...
January 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28004230/in-silico-mining-of-conserved-mirnas-of-indian-catfish-clarias-batrachus-linnaeus-1758-from-the-contigs-ests-and-bac-end-sequences
#12
Suyash Agarwal, N S Nagpure, Prachi Srivastava, Ravindra Kumar, Manmohan Pandey, Shreya Srivastava, J K Jena, P Das, Basdeo Kushwaha
MicroRNAs are small non-coding RNAs which play significant role in RNA interference. The present work deals with mining of the conserved miRNA and their target genes from the contigs, ESTs, and BAC end sequences of commercially important catfish, Clarias batrachus, from India. A total of 138, 1 and 1 conserved pre-miRNA sequences, were mined from the contigs, ESTs, and BAC end sequences, respectively. The analysis of families of the conserved pre-miRNA revealed conservation of the fish-specific family mir-430 and other important families, such as mir-455, let-7, mir-133, and mir-137...
December 21, 2016: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/27990256/dna-barcoding-of-clarias-gariepinus-coptodon-zillii-and-sarotherodon-melanotheron-from-southwestern-nigeria
#13
Mofolusho O Falade, Anthony J Opene, Otarigho Benson
DNA barcoding has been adopted as a gold standard rapid, precise and unifying identification system for animal species and provides a database of genetic sequences that can be used as a tool for universal species identification. In this study, we employed mitochondrial genes 16S rRNA (16S) and cytochrome oxidase subunit I (COI) for the identification of some Nigerian freshwater catfish and Tilapia species. Approximately 655 bp were amplified from the 5' region of the mitochondrial cytochrome C oxidase subunit I (COI) gene whereas 570 bp were amplified for the 16S rRNA gene...
2016: F1000Research
https://www.readbyqxmd.com/read/27875264/expression-of-wnt4-5-during-reproductive-cycle-of-catfish-and-wnt5-promoter-analysis
#14
Yarikipati Prathibha, Balasubramanian Senthilkumaran
Signaling molecules, Wnt4 and Wnt5, are essential for ovarian growth during developmental stages in mammals. Although these molecules were identified in several teleosts, their precise expression and role in reproductive processes have not yet been explored in any lower vertebrates. In view of this, using catfish, Clarias batrachus as an animal model, cloning and expression analysis of wnt4 and wnt5 were analyzed in different tissues, at various developmental stages, during ovarian reproductive cycle and after gonadotropin induction...
January 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/27818887/pesticide-residues-in-water-sediment-and-fish-from-tono-reservoir-and-their-health-risk-implications
#15
Osei Akoto, Augustine Asore Azuure, K D Adotey
Levels of organochlorine (OC) and organophosphorus (OP) pesticide residues in fish, sediments and water and their health risk associated with the consumption of the fish from the Tono Reservoir, Ghana were evaluated. The analytical methods included solvent extraction of the pesticide residues using ultrasound sonication and soxhlet extraction and their subsequent quantification using GC equipped with electron capture detector and pulse flame photometric detector after clean-up on activated silica gel/anhydrous sodium sulphate...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27816289/haematological-and-immune-upshots-in-clarias-batrachus-exposed-to-dimethoate-and-defying-response-of-dietary-ascorbic-acid
#16
Madhusudan Reddy Narra
Dimethoate (DM) is an organophosphate insecticide used worldwide in agriculture, household practices. It has resulted in a series of environmental and toxicological impacts on non-target aquatic organisms. The present study investigated the potential ameliorative effects of dietary ascorbic acid (AA) against dimethoate toxicity in the haematological and immune parameters in Clarias batrachus. The experiment included group A (basal diet), group B (basal diet with 1.245 mg L(-1) DM) and group C (200 mg kg(-1) AA with 1...
February 2017: Chemosphere
https://www.readbyqxmd.com/read/27815560/nitric-oxide-no-stimulates-steroidogenesis-and-folliculogenesis-in-fish
#17
Vinay Kumar Singh, Bechan Lal
The present study was undertaken to understand the physiological significance of the existence of nitric oxide synthase (NOS)/nitric oxide (NO) system in fish ovary. For this, two doses of NO donor, sodium nitroprusside (SNP, 25 µg and 50 µg) and NOS inhibitor, N-nitro-l-arginine methyl ester (l-NAME, 50 µg and 100 µg)/100 g body weight were administered during the two reproductive phases of reproductive cycle of the Clarias batrachus During the late-quiescence phase, high dose of l-NAME decreased the NO, testosterone, 17β-estradiol, vitellogenin contents in serum and ovary and activities of 5-ene-3β-hydroxysteroid dehydrogenases (3β-HSD) and 17β-hydroxysteroid dehydrogenases (17β-HSD) in ovary, whereas higher dose of SNP increased these parameters...
February 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/27815438/the-acute-on-chronic-liver-failure-syndrome-or-when-the-innate-immune-system-goes-astray
#18
REVIEW
Joan Clària, Vicente Arroyo, Richard Moreau
The acute-on-chronic liver failure (ACLF) syndrome is characterized by acute decompensation of cirrhosis, organ failure, and high 28-d mortality. ACLF displays key features of systemic inflammation and its poor outcome is closely associated with exacerbated systemic inflammatory responses. In this review, we describe the prevailing characteristics of systemic inflammation in patients with decompensated cirrhosis and ACLF, with special emphasis on the principal features of the cytokine storm the mechanisms underlying this intense systemic inflammatory response (i...
November 15, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27810534/insecticides-induced-stress-response-and-recuperation-in-fish-biomarkers-in-blood-and-tissues-related-to-oxidative-damage
#19
Madhusudan Reddy Narra, Kodimyala Rajender, R Rudra Reddy, U Suryanarayana Murty, Ghousia Begum
The present research investigated the growth, blood, antioxidant response (liver), AChE (brain and muscle) and Na+/K + ATPase in gills of Clarias batrachus exposed to 0 (control), two insecticides, 1.65 mg L(-1) chlorpyrifos (CPF) and 2.14 mg L(-1) monocrotophos (MCP) for a fixed interval time of 3, 6, 9, 12 and 15 days and follow up depuration process in fresh water for 30 days (at an interval of 7, 15 and 30 days). The toxicants exposed fish indicated significantly (P < 0.05) lower weight gain and HSI...
February 2017: Chemosphere
https://www.readbyqxmd.com/read/27805784/role-of-isotocin-in-regulation-of-the-hypophysiotropic-dopamine-neurons-in-the-preoptic-area-of-the-catfish-clarias-batrachus
#20
Omprakash Singh, Santosh Kumar, Uday Singh, Yogesh Bhute, Praful S Singru
Dopamine (DA) has emerged as the potent inhibitory neuromodulator of LH secretion and reproduction in teleosts. The DA neurons located in the anterior subdivision of nucleus preopticus periventricularis (NPPa) in the preoptic area (POA) innervate the pituitary gland and regulate the LH cells. Although reduction in the inhibitory DAergic tone is crucial for stimulatory action of GnRH on LH cells, the role of other hypothalamic factors is suggested but not fully understood. Nonapeptide, isotocin (IST) has emerged as a likely candidate that may also influence the LH cell function...
November 2, 2016: Journal of Neuroendocrinology
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