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Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology

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https://www.readbyqxmd.com/read/30448604/dietary-replacement-of-fish-meal-impaired-protein-synthesis-and-immune-response-of-juvenile-pacific-white-shrimp-litopenaeus-vannamei-at-low-salinity
#1
Shiwei Xie, Dan Wei, Peng Yin, Lu Zheng, Tianyu Guo, Yongjian Liu, Lixia Tian, Jin Niu
An 8-week feeding trial was conducted to evaluate the effect of fish-meal replacement on growth performance, protein synthesis and immune response of juvenile Pacific white shrimp, Litopenaeus vannamei reared at low salinity (7‰). Five isonitrogenous and isolipidic diets were formulated to contain graded levels (25, 20, 15, 10 and 5%) of fish-meal. High quality alternative solutions were performed, crystalline amino acids, phytase, mannan oligosaccharides and some micro-nutrients were supplemented in the low fish-meal diets...
November 15, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30445225/phaseolin-ingestion-affects-vesicular-traffic-causing-oxidative-stress-in-the-midgut-of-callosobruchus-maculatus-larvae
#2
Daniele Kunz, Gabriel B Oliveira, Theo C Brascher, Richard I Samuels, Maria Lígia R Macedo, Luiz F de Souza, Alcir L Dafré, Carlos P Silva
It has been reported that phaseolin, the major storage globulin of the common bean (Phaseolus vulgaris), is toxic to Callosobruchus maculatus larvae, an Old World bruchid beetle that is not capable of infesting this New World edible bean. It has also been demonstrated that vicilin, the major storage globulin found in cowpea (Vigna unguiculata) seeds, is absorbed through receptor-mediated endocytosis in the insect midgut. A putative vicilin receptor has been purified and showed high homology to α-tocopherol transfer protein...
November 13, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30423433/phoenixin-expression-at-different-ovarian-development-stages-and-effects-on-genes-ralated-to-reproduction-in-spotted-scat-scatophagus-argus
#3
Mei Wang, Hua-Pu Chen, Yi Zhai, Dong-Neng Jiang, Jian-Ye Liu, Chang-Xu Tian, Tian-Li Wu, Chun-Hua Zhu, Si-Ping Deng, Guang-Li Li
Phoenixin (Pnx), a recently discovered neuropeptide, has been implicated in reproduction. Pnx mainly exists in two active isoforms, phoenixin-14 (Pnx-14) and phoenixin-20 (Pnx-20). However, little is known about the functions of Pnx in teleosts. To determine the roles of Pnx in the regulation of reproduction in Scatophagus argus, the physiological characterization of the Pnx was analyzed. During ovary development, the expression of pnx in phase IV was higher than in phase II and III in the hypothalamus. In the pituitary, pnx expression was highest in phase IV, moderate in phase III, and lowest in phase II...
November 10, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30419288/cloning-snp-detection-and-growth-correlation-analysis-of-the-5-flanking-regions-of-two-myosin-heavy-chain-7-genes-in-mandarin-fish-siniperca-chuatsi
#4
Junjian Dong, Zhihang Chen, Chengfei Sun, Yuanyuan Tian, Jie Hu, Maixin Lu, Xing Ye
Myosin heavy chains (MYHs) play important roles in muscle growth and contraction. In fish, MYHs contribute to hyperplasia and hypertrophy of muscle fibers, which can continue into adult life and thus result in indeterminate growth in some species. We previously identified two MYH genes, MYH-7a and MYH-7b, that are differentially expressed in Mandarin fish (Siniperca chuatsi) and appear to function in early growth. However, the regulatory role of their 5' flanking regions is unknown. To examine the effects of single nucleotide polymorphisms (SNPs) in these regions, we used genome walking to amplify their flanking sequences and analyzed the regulatory elements and binding sites...
November 10, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30367964/the-effect-of-micronutrient-supplementation-on-growth-and-hepatic-metabolism-in-diploid-and-triploid-atlantic-salmon-salmo-salar-parr-fed-a-low-marine-ingredient-diet
#5
John F Taylor, Luisa M Vera, Christian De Santis, Erik-Jan Lock, Marit Espe, Kaja H Skjærven, Daniel Leeming, Jorge Del Pozo, Jose Mota-Velasco, Herve Migaud, Kristin Hamre, Douglas R Tocher
The effects of low marine ingredient diets supplemented with graded levels (L1, L2, L3) of a micronutrient package (NP) on growth and metabolic responses were studied in diploid and triploid salmon parr. Diploids fed L2 showed significantly improved growth and reduced liver, hepatic steatosis, and viscerosomatic indices, while fish fed L3 showed suppressed growth rate 14 weeks post feeding. In contrast, dietary NP level had no effect on triploid performance. Whole body mineral composition, with exception of copper, did not differ between diet or ploidy...
October 24, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30366056/evaluation-of-baseline-haemolymph-biochemistry-volume-and-total-body-energetics-to-determine-an-accurate-condition-index-in-the-black-tiger-shrimp-penaeus-monodon
#6
Sarah E Berry, Cedric J Simon, Andrew R Foote, Dean R Jerry, Nicholas M Wade
Crustaceans are exposed to a range of environmental factors that can impact their condition, physiological function and growth. Condition indices are broadly defined as the extent to which stored nutrient reserves allow normal physiological function and growth, but can also represent more than nutrition alone. There is currently no reliable indicator to non-destructively measure shrimp physiological or nutritional condition. In this study, haemolymph and biochemical indices were benchmarked against a range of physiological status condition indicators, including haemolymph biochemistry parameters and carcass traits, in fed and unfed sub-adult black tiger shrimp (Penaeus monodon) and across the moult cycle...
October 24, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30315898/dynamic-alterations-in-methylation-of-global-dna-and-growth-related-genes-in-large-yellow-croaker-larimichthys-crocea-in-response-to-starvation-stress
#7
Yu Zhang, Weiliang Shen, Mingyue Cao, Juan Li, Baoxiao Zheng, Zhengjia Lou, Baoying Qian, Liangyi Xue
DNA methylation is susceptible to various environmental factors such as salinity, temperature and nutritional conditions, and can affect gene function, organ metabolism, body growth and development. In order to explore the effect of starvation on growth-related genes in large yellow croaker (Larimichthys crocea), we studied methylation of the global DNA and growth-related genes (MSTN1,MSTN2,IGF1,IGF2) and the corresponding mRNA expressions, using ELISA-based technique, bisulfite sequencing PCR (BSP) technique and quantitative Real-time PCR (qRT-PCR) respectively...
October 11, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30292754/expression-patterns-and-ligand-binding-characterization-of-plus-c-odorant-binding-protein-14-from-adelphocoris-lineolatus-goeze
#8
Liang Sun, Yu Li, Ziding Zhang, Huawei Guo, Qiang Xiao, Qian Wang, Yongjun Zhang
Odorant-binding proteins (OBPs) can bind and transport hydrophobic odorants across the sensillum lymph to the olfactory receptors (ORs) and play crucial roles in insect chemosensory systems. Although the ligand spectra of classical OBPs have been extensively characterized, little is known about OBPs in the Plus-C subgroup. Here, we focus on AlinOBP14, a Plus-C OBP from the hemipteran mirid bug pest Adelphocoris lineolatus (Goeze). Quantitative real-time PCR experiments suggest that AlinOBP14 is ubiquitously expressed at different developmental stages but is highly expressed in the adult head, the non-chemosensory organ...
October 5, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30292753/expression-of-the-alternative-splicing-variants-of-bcl6b-in-medaka-oryzias-latipes
#9
Runshuai Zhang, Xiaomei Ke, Kongyue Wu, Hao Shen, Emile Nibona, Abdullah Al Hafiz, Xiaoting Liang, Weiyuan Ye, Qingchun Zhou, Xueping Zhong, Haobin Zhao
Bcl6B, also known as BAZF, plays important roles in the immune response, repression of cancers, and maintenance of spermatogonial stem cells in mammals. In this study, the homologous gene bcl6b and its 5 alternative splicing variants, namely bcl6bX1 to bcl6bX5, were isolated from medaka fish, Oryzias latipes. Medaka bcl6b possesses conserved domains such as BTB domain, RD2 domain and four zinc fingers. Medaka bcl6bX1 to bcl6bX3 possess all three previously mentioned domains with minor differences in sequences...
October 5, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30290221/a-complete-enzymatic-capacity-for-long-chain-polyunsaturated-fatty-acid-biosynthesis-is-present-in-the-amazonian-teleost-tambaqui-colossoma-macropomum
#10
Renato B Ferraz, Naoki Kabeya, Mónica Lopes-Marques, André M Machado, Ricardo A Ribeiro, Ana L Salaro, Rodrigo Ozório, L Filipe C Castro, Óscar Monroig
In vertebrates, the essential fatty acids (FA) that satisfy the dietary requirements for a given species depend upon its desaturation and elongation capabilities to convert the C18 polyunsaturated fatty acids (PUFA), namely linoleic acid (LA, 18:2n-6) and α-linolenic acid (ALA, 18:3n-3), into the biologically active long-chain (C20-24 ) polyunsaturated fatty acids (LC-PUFA), including arachidonic acid (ARA, 20:4n-6), eicosapentaenoic acid (EPA, 20:5n-3) and docosahexaenoic acid (DHA, 22:6n-3). Recent studies have established that tambaqui (Colossoma macropomum), an important aquaculture-produced species in Brazil, is a herbivorous fish that can fulfil its essential FA requirements with dietary provision C18 PUFA LA and ALA, although the molecular mechanisms underpinning such ability remained unclear...
October 2, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30267892/kinetic-characterization-of-the-gill-na-k-atpase-in-a-hololimnetic-population-of-the-diadromous-amazon-river-shrimp-macrobrachium-amazonicum-decapoda-palaemonidae
#11
Leonardo M Fabri, Malson N Lucena, Daniela P Garçon, Cintya M Moraes, John C McNamara, Francisco A Leone
We provide a kinetic characterization of (Na+ , K+ )-ATPase activity in a posterior gill microsomal fraction from a hololimnetic population of the diadromous Amazon River shrimp Macrobrachium amazonicum. Sucrose density gradient centrifugation reveals two distinct membrane fractions showing considerable (Na+ , K+ )ATP-ase activity, but also containing other microsomal ATPases. Only a single immune-reactive (Na+ , K+ )-ATPase with Mr of ≈110 kDa is present that hydrolyzes ATP with VM  = 130.3 ± 4...
September 27, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30266630/hypometabolic-strategy-and-glucose-metabolism-maintenance-of-aedes-aegypti-egg-desiccation
#12
Renato Martins da Silva, Wagner Oliveira Vital, Rodrigo Nunes da Fonseca, Yolanda Porto Muniz Martins, Francisco José Alves Lemos, Itabajara da Silva Vaz, Carlos Logullo
The mosquito Aedes aegypti is vector of several viruses including yellow fever virus, dengue virus chikungunya virus and Zika virus. One of the major problems involving these diseases transmission is that A. aegypti embryos are resistant to desiccation at the end of embryogenesis, surviving and remaining viable for several months inside the egg. Therefore, a fine metabolism control is essential to support these organisms throughout this period of resistance. The carbohydrate metabolism has been shown to be of great importance during arthropod embryogenesis, changing dramatically in order to promote growth and differentiation and in periods of resistance...
September 25, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30236454/integrative-cytological-analysis-of-the-effects-of-ca-2-and-vitamin-d-3-on-extracellular-ca-2-flux-and-intracellular-ca-2-reserves-in-the-mantle-of-the-pearl-oyster-hyriopsis-cumingii-lea
#13
Wenjuan Li, Yuxiang Cao, Xingrong Xuan, Zhiyi Shi, Ye Zhang, Jiamin Liu, Zhiyi Bai, Yuanshuai Fu, Minglin Wu
To examine Ca2+ absorption and transportation in the freshwater pearl oyster, Hyriopsis cumingii Lea, we studied the effects of different levels of either extracellular Ca2+ or 1,25(OH)2 D3 on extracellular Ca2+ flux and intracellular Ca2+ concentrations in mantle cells using the non-invasive micro-test technique and laser scanning confocal microscopy. The inner and outer mantle (IM and OM) cells from mussels were cultured and then treated with different concentrations of Ca2+ and 1,25(OH)2 D3. Extracellular Ca2+ flux and intracellular Ca2+ reserves were analyzed...
September 17, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30218714/comparison-of-steroidogenic-gene-expression-in-mummichog-fundulus-heteroclitus-testis-tissue-following-exposure-to-aromatizable-or-non-aromatizable-androgens
#14
Robert Rutherford, Andrea Lister, Deborah MacLatchy
Androgens are a recognized class of endocrine disrupting compounds with the ability to impact reproductive status in aquatic organisms. The current study utilized in vitro exposure of mummichog (Fundulus heteroclitus) testis tissue to either the aromatizable androgen 17α-methyltestosterone (MT) or the non-aromatizable androgen 5α-dihydrotestosterone (DHT) over the course of 24 h to determine if there were differential effects on steroidogenic gene expression. Testis tissue was exposed to androgen concentrations of 10-12  M, 10-9  M and 10-6  M for 6, 12, 18 or 24 h, after which a suite of steroidogenic genes, including steroidogenic acute regulatory protein, 3β-hydroxysteroid dehydrogenase (3βhsd) and cytochrome P450 17A1 (cyp17a1), were quantified using real-time polymerase chain reaction...
September 13, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30201405/oxygen-dependent-distinct-expression-of-hif-1%C3%AE-gene-in-aerobic-and-anaerobic-tissues-of-the-amazon-oscar-astronotus-crassipinnis
#15
Waldir Heinrichs-Caldas, Derek Felipe Campos, Maria Nazaré Paula-Silva, Vera Maria Fonseca Almeida-Val
The aquatic habitats of the Amazon basin present dramatic variation of oxygen level, and, to survive such changes, many aquatic animals developed biochemical and physiological adaptations. The advanced teleost Astronotus crassipinnis (Perciformes) is a fish tolerant to hypoxia and known to endure such naturally variable environments. Hypoxia-Inducible factor-1α (hif-1α) is among the most important and studied genes related to hypoxia-tolerance, maintaining regular cellular function and controlling anaerobic metabolism...
September 7, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30196154/lipid-protein-interactions-in-mitochondrial-membranes-from-bivalve-mollusks-molecular-strategies-in-different-species
#16
Rosamaria Fiorini, Vittoria Ventrella, Fabiana Trombetti, Micaela Fabbri, Alessandra Pagliarani, Salvatore Nesci
The mitochondrial F1 FO -ATPase, the key enzyme in cell bioenergetics, apparently works in the same way in mollusks and in mammals. We previously pointed out a raft-like arrangement in mussel gill mitochondrial membranes, which apparently distinguishes bivalve mollusks from mammals. To explore the relationship between the microenvironmental features and the enzyme activity, the physico-chemical features of mitochondrial membranes and the F1 FO -ATPase activity temperature-dependence are here explored in the Manila clam (Ruditapes philippinarum)...
September 7, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30195088/assessment-of-muscular-energy-metabolism-and-heat-shock-response-of-the-green-abalone-haliotis-fulgens-gastropoda-philipi-at-extreme-temperatures-combined-with-acute-hypoxia-and-hypercapnia
#17
Miguel A Tripp-Valdez, Christian Bock, Gisela Lannig, Nils Koschnick, Hans O Pörtner, Magnus Lucassen
The interaction between ocean warming, hypoxia and hypercapnia, suggested by climate projections, may push an organism earlier to the limits of its thermal tolerance window. In a previous study on juveniles of green abalone (Haliotis fulgens), combined exposure to hypoxia and hypercapnia during heat stress induced a lowered critical thermal maximum (CTmax ), indicated by constrained oxygen consumption, muscular spams and loss of attachment. Thus, the present study investigated the cell physiology in foot muscle of H...
September 6, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30193833/developmental-dynamics-of-myogenesis-in-pacific-oyster-crassostrea-gigas
#18
Huijuan Li, Qi Li, Hong Yu, Shaojun Du
Pacific oyster (Crassostrea gigas) is a sessile bivalve living in the intertidal zone. It has become an attractive model for developmental studies due to its metamorphic transition from a mobile planktonic larvae to a sessile adults. To determine the effect of metamorphosis on muscle development in oyster larvae, we characterized myogenesis during larval development and metamorphosis by phalloidin staining which labels filamentous actin filaments. Our data revealed a dynamic pattern of myogenesis during embryonic and larval development...
September 5, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30170023/genome-wide-identification-evolution-of-dna-methyltransferases-and-their-expression-during-gonadal-development-in-nile-tilapia
#19
COMPARATIVE STUDY
Fei-Long Wang, Long-Xia Yan, Hong-Juan Shi, Xing-Yong Liu, Qiao-Yuan Zheng, Li-Na Sun, De-Shou Wang
DNA methyltransferases (dnmts) are responsible for DNA methylation and play important roles in organism development. In this study, seven dnmts genes (dnmt1, dnmt2, dnmt3aa, dnmt3ab, dnmt3ba, dnmt3bb.1, dnmt3bb.2) were identified in Nile tilapia. Comprehensive analyses of dnmts were performed using available genome databases from representative animal species. Phylogenetic analysis revealed that the dnmts family were highly conserved in teleosts. Based on transcriptome data from eight adult tilapia tissues, the dnmts were found to be dominantly expressed in the head kidney, testis and ovary...
December 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/30138681/myosin-va-from-eriocheir-sinensis-cdna-cloning-expression-and-involvement-in-growth-and-development
#20
Hao Li, Peng Li, Jie Yan, Wenli Xie, Peipei Wang, Haixia Wu, Kaiya Zhou
Myosin Va, a member of the myosin superfamily, has been widely identified associated with processes of cellular motility, which include neurotransmitter release and synaptic plasticity during neurodevelopment. However, the function of myosin Va in the growth and development of crustaceans has not yet been reported. In this study, a full-length cDNA of myosin Va (named as EsMyoVa) was cloned from the Chinese mitten crab, Eriocheir sinensis, and the expression patterns were detected in different tissues and larval developmental stages...
December 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
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