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NADK-mediated proline synthesis enhances high-salinity tolerance in the razor clam
In conclusion, our results demonstrate the important role of ScNADK in augmenting proline production under high-salinity stress, by which the razor clam is able to accommodate salinity variations in the ecological niche.PMID:38408517 | DOI:10.1016/j.cbpa.2024.111610 (Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology.)
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - February 26, 2024 Category: Physiology Authors: Ruiqi Liu Min Deng Na Zhang Yifeng Li Liang Jia Donghong Niu Source Type: research

Intraperitoneal administration of kisspeptin-10 modulates follicle maturation, gonadal steroids, calcium and metabolites in Sterlet sturgeon, Acipenser ruthenus
Comp Biochem Physiol A Mol Integr Physiol. 2024 Feb 22:111609. doi: 10.1016/j.cbpa.2024.111609. Online ahead of print.ABSTRACTKisspeptin is a multifunctional neurohormone, primarily involved in the regulation of reproduction. We tested whether peripheral administration of kisspeptin10 (KP-10) via intraperitoneal injection or slow release affects reproductive hormones and metabolites in Sterlet sturgeon (Acipenser ruthenus). Plasma and mucus 17β-estradiol (E2), and testosterone (T), plasma and follicular vitellogenin (VTG) and calcium (Ca) as well as glucose and lipids were determined. Mature Sterlet sturgeon were grouped ...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - February 24, 2024 Category: Physiology Authors: Zahra Roosta Suraj Unniappan Chinelo Uju Mehdi Rahmati Bahram Falahatkar Source Type: research

The pancreas does not contribute to the non-adrenergic-non-cholinergic stimulation of heart rate in digesting pythons
Comp Biochem Physiol A Mol Integr Physiol. 2024 Feb 18;291:111608. doi: 10.1016/j.cbpa.2024.111608. Online ahead of print.ABSTRACTVertebrates elevate heart rate when metabolism increases during digestion. Part of this tachycardia is due to a non-adrenergic-non-cholinergic (NANC) stimulation of the cardiac pacemaker, and it has been suggested these NANC factors are circulating hormones that are released from either gastrointestinal or endocrine glands. The NANC stimulation is particularly pronounced in species with large metabolic responses to digestion, such as reptiles. To investigate the possibility that the pancreas may...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - February 19, 2024 Category: Physiology Authors: Igor Noll Guagnoni Katja Bundgaard Last Emil Rindom Tobias Wang Source Type: research

The pancreas does not contribute to the non-adrenergic-non-cholinergic stimulation of heart rate in digesting pythons
Comp Biochem Physiol A Mol Integr Physiol. 2024 Feb 17:111608. doi: 10.1016/j.cbpa.2024.111608. Online ahead of print.ABSTRACTVertebrates elevate heart rate when metabolism increases during digestion. Part of this tachycardia is due to a non-adrenergic-non-cholinergic (NANC) stimulation of the cardiac pacemaker, and it has been suggested these NANC factors are circulating hormones that are released from either gastrointestinal or endocrine glands. The NANC stimulation is particularly pronounced in species with large metabolic responses to digestion, such as reptiles. To investigate the possibility that the pancreas may rel...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - February 19, 2024 Category: Physiology Authors: Igor Noll Guagnoni Katja B Last Emil Rindom Tobias Wang Source Type: research

Species-specific oxylipins and the effects of ontogeny and predation on their emission from freshwater snails
Comp Biochem Physiol A Mol Integr Physiol. 2024 Feb 14;291:111607. doi: 10.1016/j.cbpa.2024.111607. Online ahead of print.ABSTRACTChemical cues play important roles in mediating ecological interactions. Oxylipins, oxygenated metabolites of fatty acids, are one signalling molecule type that influences the physiology and function of species, suggesting their broader significance in chemical communication within aquatic systems. Yet, our current understanding of their function is restricted taxonomically and contextually making it difficult to infer their ecological significance. Snails and leeches are ubiquitous in freshwate...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - February 15, 2024 Category: Physiology Authors: Olwyn C Friesen Harold M Aukema Jillian T Detwiler Source Type: research

Species-specific oxylipins and the effects of ontogeny and predation on their emission from freshwater snails
Comp Biochem Physiol A Mol Integr Physiol. 2024 Feb 13:111607. doi: 10.1016/j.cbpa.2024.111607. Online ahead of print.ABSTRACTChemical cues play important roles in mediating ecological interactions. Oxylipins, oxygenated metabolites of fatty acids, are one signalling molecule type that influences the physiology and function of species, suggesting their broader significance in chemical communication within aquatic systems. Yet, our current understanding of their function is restricted taxonomically and contextually making it difficult to infer their ecological significance. Snails and leeches are ubiquitous in freshwater ec...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - February 15, 2024 Category: Physiology Authors: Olwyn C Friesen Harold M Aukema Jillian T Detwiler Source Type: research

Immune and endocrine alterations at the early stage of inflammatory assemblage in toads after stimulation with heat-killed bacteria (Aeromonas hydrophila)
Comp Biochem Physiol A Mol Integr Physiol. 2024 Feb 12:111606. doi: 10.1016/j.cbpa.2024.111606. Online ahead of print.ABSTRACTThe red-leg syndrome in amphibians is a condition commonly associated with the bacteria Aeromonas hydrophila and has led to population declines. However, there is little information concerning the inflammatory assemblage in infected anurans. We evaluated immune and endocrine alterations induced by stimulation with heat-killed A. hydrophila injected in Rhinella diptycha toads. Control animals were not manipulated, while the others were separated into groups that received intraperitoneal injection of ...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - February 14, 2024 Category: Physiology Authors: Patr ício G Garcia Neto Stefanny C M Titon Sandra M Muxel Braz Titon Aymam C de Figueiredo Felipe R Floreste Alan S Lima Vania R Assis Fernando R Gomes Source Type: research

Short-term exposure to high pCO < sub > 2 < /sub > leads to decreased branchial cytochrome C oxidase activity in the presence of octopamine in a decapod
Comp Biochem Physiol A Mol Integr Physiol. 2024 Feb 10:111603. doi: 10.1016/j.cbpa.2024.111603. Online ahead of print.ABSTRACTIn a recent mechanistic study, octopamine was shown to promote proton transport over the branchial epithelium in green crabs, Carcinus maenas. Here, we follow up on this finding by investigating the involvement of octopamine in an environmental and physiological context that challenges acid-base homeostasis, the response to short-term high pCO2 exposure (400 Pa) in a brackish water environment. We show that hyperregulating green crabs experienced a respiratory acidosis as early as 6 h of exposure to...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - February 12, 2024 Category: Physiology Authors: Sandra Fehsenfeld Gwangseok R Yoon Alex R Quijada-Rodriguez Haluka Kandachi-Toujas Piero Calosi Sophie Breton Dirk Weihrauch Source Type: research

Erratum to " Temperature and hypoxia trigger developmental phenotypic plasticity of cardiorespiratory physiology and growth in the parthenogenetic marbled crayfish, Procambarus virginalis Lyko, 2017" [Comparative Biochemistry and Physiology, Part A 288 (2024) 111562]
Comp Biochem Physiol A Mol Integr Physiol. 2024 Feb 7;291:111591. doi: 10.1016/j.cbpa.2024.111591. Online ahead of print.NO ABSTRACTPMID:38330516 | DOI:10.1016/j.cbpa.2024.111591 (Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology.)
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - February 8, 2024 Category: Physiology Authors: Torben G öpel Warren W Burggren Source Type: research