Diet effects on ectotherm thermal performance
Biol Rev Camb Philos Soc. 2024 Apr 14. doi: 10.1111/brv.13081. Online ahead of print.ABSTRACTThe environment is changing rapidly, and considerable research is aimed at understanding the capacity of organisms to respond. Changes in environmental temperature are particularly concerning as most animals are ectothermic, with temperature considered a key factor governing their ecology, biogeography, behaviour and physiology. The ability of ectotherms to persist in an increasingly warm, variable, and unpredictable future will depend on their nutritional status. Nutritional resources (e.g. food availability, quality, options) var...
Source: Biological Reviews of the Cambridge Philosophical Society - April 15, 2024 Category: Biology Authors: Emily A Hardison Erika J Eliason Source Type: research
Sensitivity volume as figure-of-merit for maximizing data importance in electrical impedance tomography
Objective. Electrical impedance tomography (EIT) is a noninvasive imaging method whereby electrical measurements on the periphery of a heterogeneous conductor are inverted to map its internal conductivity. The EIT method proposed here aims to improve computational speed and noise tolerance by introducing sensitivity volume as a figure-of-merit for comparing EIT measurement protocols. Approach. Each measurement is shown to correspond to a sensitivity vector in model space, such that the set of measurements, in turn, corresponds to a set of vectors that subtend a sensitivity volume in model space. A maximal sensitivity volum...
Source: Physiological Measurement - April 15, 2024 Category: Physiology Authors: Claire C Onsager, Chulin Wang, Charles Costakis, Can C Aygen, Lauren Lang, Suzan van der Lee and Matthew A Grayson Source Type: research
Visualizing pursed lips breathing of patients with chronic obstructive pulmonary disease through evaluation of global and regional ventilation using electrical impedance tomography
This study aims to explore the possibility of using electrical impedance tomography (EIT) to assess pursed lips breathing (PLB) performance of patients with chronic obstructive pulmonary disease (COPD). Methods. 32 patients with COPD were assigned equally to either the conventional group or the EIT guided group. All patients were taught to perform PLB by a physiotherapist without EIT in the conventional group or with EIT in the EIT guided group for 10 min. The ventilation of all patients in the final test were continuously monitored using EIT and the PLB performances were rated by another physiotherapist before and after r...
Source: Physiological Measurement - April 15, 2024 Category: Physiology Authors: Lin Yang, Zhijun Gao, Xinsheng Cao, Chunchen Wang, Hang Wang, Jing Dai, Yang Liu, Yilong Qin, Meng Dai, Binghua Zhang, Ke Zhao and Zhanqi Zhao Source Type: research
CFP/Yit: An Inbred Mouse Strain with Slow Gastrointestinal Transit
ConclusionsThis study indicates that CFP mice exhibit slow transit in the stomach, cecum, and colon. As a novel mouse model, CFP mice can contribute to the study of gastrointestinal physiology and disease. (Source: Digestive Diseases and Sciences)
Source: Digestive Diseases and Sciences - April 15, 2024 Category: Gastroenterology Source Type: research
Effects of chronic social equality and inequality conditions on passive avoidance memory and PTSD-like behaviors in rats under chronic empathic stress
. (Source: International Journal of Neuroscience)
Source: International Journal of Neuroscience - April 15, 2024 Category: Neuroscience Authors: Mohammad MazaheriMaryam RadahmadiMohammad Reza SharifiDepartment of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran Source Type: research
Is pulmonary hypertension protective against cardiac tamponade? A systematic review
AbstractThe presence of pulmonary hypertension (PH) may affect whether cardiac tamponade physiology develops from a pericardial effusion. Specifically, the increased intracardiac pressure and right ventricular hypertrophy associated with PH would seemingly increase the intrapericardial pressure threshold at which the right-sided chambers collapse. In this systematic review, we examined the impact of PH on the incidence, in-hospital and long-term mortality, and echocardiographic findings of patients with cardiac tamponade. Using the PRISMA guideline, a systematic search was conducted in PubMed, Academic Search Premier, Web ...
Source: Internal and Emergency Medicine - April 15, 2024 Category: Emergency Medicine Source Type: research
Mild elevation of pulmonary vascular resistance predicts mortality regardless of mean pulmonary artery pressure in mild interstitial lung disease
Conclusions
Mild elevation of PVR was associated with a higher mortality rate in patients with newly diagnosed ILD, even in those with MPAP≤20 mm Hg. (Source: Thorax)
Source: Thorax - April 15, 2024 Category: Respiratory Medicine Authors: Sato, T., Furukawa, T., Teramachi, R., Fukihara, J., Yamano, Y., Yokoyama, T., Matsuda, T., Kataoka, K., Kimura, T., Sakamoto, K., Ishii, M., Kondoh, Y. Tags: Editor's choice, Thorax Interstitial lung disease Source Type: research
Exposure to hull cleaning wastewater induces mortality through oxidative stress and cholinergic disturbance in the marine polychaete Perinereis aibuhitensis
In this study, we provide evidence on acute harmful effects of hull cleaning wastewater in marine polychaete Perinereis aibuhitensis by analyzing physiological and biochemical parameters such as survival, burrowing activity, and oxidative status. Raw wastewater samples were collected during ship hull cleaning processes in the field. Two wastewater samples for the exposure experiment were prepared in the laboratory: 1) mechanically filtered in the in-water cleaning system (MF) and 2) additionally filtered with a 0.45 μm filter in the laboratory (LF). These wastewater samples contained high concentrations of metals (zinc an...
Source: Comparative biochemistry and physiology. Toxicology and pharmacology : CBP - April 14, 2024 Category: Biochemistry Authors: Somyeong Lee Jaehee Kim Jee-Hyun Jung Moonkoo Kim Hyun Park Jae-Sung Rhee Source Type: research
Multi-biomarker approach to evaluate the toxicity of chlorpyrifos (active ingredient and a commercial formulation) on different stages of Biomphalaria straminea
Comp Biochem Physiol C Toxicol Pharmacol. 2024 Apr 12:109923. doi: 10.1016/j.cbpc.2024.109923. Online ahead of print.ABSTRACTBiomphalaria straminea is a freshwater gastropod native to South America and used in toxicological assessments. Our aim was to estimate 48 h-LC50 and sub-chronic effects after the exposure to low concentrations of chlorpyrifos as commercial formulation (CF) and active ingredient (AI) on B. straminea adult, embryos and juveniles. Concentrations between 1 and 5000 μg L-1 were chosen for acute exposures and 0.1 and 1 μg L-1 for the sub-chronic one. After 14 days biochemical parameters, viability and s...
Source: Comparative biochemistry and physiology. Toxicology and pharmacology : CBP - April 14, 2024 Category: Biochemistry Authors: A Bianco Karina N Martini Claudia J Tejedor Mar ía G Paredes Mar ía Kristoff Gisela Source Type: research
Comparison of developmental toxicity of graphene oxide and graphdiyne to zebrafish larvae
In this study, we compared with developmental toxicity of GO and GDY to zebrafish larvae. It was shown that exposure of zebrafish embryos from 5 h post fertilization to GO and GDY for up to 5 days decreased hatching rate and induced morphological deformity. Behavioral tests indicated that GO and GDY treatment led to hyperactivity of larvae. However, blood flow velocity was not significantly affected by GO or GDY. RNA-sequencing data revealed that both types of NMs altered gene expression profiles as well as gene ontology terms and KEGG pathways related with metabolism. We further confirmed that the NMs altered the expressi...
Source: Comparative biochemistry and physiology. Toxicology and pharmacology : CBP - April 14, 2024 Category: Biochemistry Authors: Wanyan Wu Weichao Zhao Chaobo Huang Yi Cao Source Type: research
On the role of dysferlin in striated muscle: membrane repair, t-tubules and Ca < sup > 2+ < /sup > handling
J Physiol. 2024 Apr 14. doi: 10.1113/JP285103. Online ahead of print.ABSTRACTDysferlin is a 237 kDa membrane-associated protein characterised by multiple C2 domains with a diverse role in skeletal and cardiac muscle physiology. Mutations in DYSF are known to cause various types of human muscular dystrophies, known collectively as dysferlinopathies, with some patients developing cardiomyopathy. A myriad of in vitro membrane repair studies suggest that dysferlin plays an integral role in the membrane repair complex in skeletal muscle. In comparison, less is known about dysferlin in the heart, but mounting evidence suggests t...
Source: The Journal of Physiology - April 14, 2024 Category: Physiology Authors: C J Quinn E J Cartwright A W Trafford K M Dibb Source Type: research
Modulation of bacterial membranes and cellular macromolecules by dimethyl sulfoxide: A dose-dependent study providing novel insights
Int J Biol Macromol. 2024 Apr 12:131581. doi: 10.1016/j.ijbiomac.2024.131581. Online ahead of print.ABSTRACTUsing Escherichia coli as a model, this manuscript delves into the intricate interactions between dimethyl sulfoxide (DMSO) and membranes, cellular macromolecules, and the effects on various aspects of bacterial physiology. Given DMSO's wide-ranging use as a solvent in microbiology, we investigate the impacts of both non-growth inhibitory (1.0 % and 2.5 % v/v) and slightly growth-inhibitory (5.0 % v/v) concentrations of DMSO. The results demonstrate that DMSO causes alterations in bacterial membrane potential, influe...
Source: International Journal of Biological Macromolecules - April 14, 2024 Category: Biochemistry Authors: Sinem Tun çer Rafig Gurbanov Source Type: research
On the role of dysferlin in striated muscle: membrane repair, t-tubules and Ca < sup > 2+ < /sup > handling
J Physiol. 2024 Apr 14. doi: 10.1113/JP285103. Online ahead of print.ABSTRACTDysferlin is a 237 kDa membrane-associated protein characterised by multiple C2 domains with a diverse role in skeletal and cardiac muscle physiology. Mutations in DYSF are known to cause various types of human muscular dystrophies, known collectively as dysferlinopathies, with some patients developing cardiomyopathy. A myriad of in vitro membrane repair studies suggest that dysferlin plays an integral role in the membrane repair complex in skeletal muscle. In comparison, less is known about dysferlin in the heart, but mounting evidence suggests t...
Source: The Journal of Physiology - April 14, 2024 Category: Physiology Authors: C J Quinn E J Cartwright A W Trafford K M Dibb Source Type: research
Retrospective investigation of the energy requirements for weight loss and weight maintenance after weight loss programme in obese dogs
AbstractObesity is a highly prevalent disease in dogs and is characterized by the excessive accumulation of adipose tissue that results in metabolic changes. Its treatment is based on a negative energy balance focusing on energy restriction. However, there are few studies in dogs that assessed the energy intake needed for adequate weight loss and to weight maintenance afterward. The aim of this study was to evaluate data about the treatment of canine obesity, with emphasis on energy restriction to induce weight loss and to maintain body weight (BW) and ideal body condition after weight loss. This was a retrospective study ...
Source: Journal of Animal Physiology and Animal Nutrition - April 14, 2024 Category: Zoology Authors: Fabio Alves Teixeira,
Vivian Pedrinelli,
Mariana Yukari Hayasaki Porsani,
Brana Sanctos Alo Bonder,
Ana Beatriz Fasolai,
Marcio Antonio Brunetto Tags: SPECIAL ISSUE ARTICLE Source Type: research
Effect of dietary Lagnaria breviflora leaves extract on the growth performance, haematological, antioxidative and immune responses of African catfish (Clarias gariepinus) juveniles
AbstractThe effects of dietaryLagnaria breviflora leaves extract (LBLE) on the growth performance, feed utilisation and haematological parameters of juveniles African catfish,Clarias gariepinus (mean = 8.45 ± 0.6 g) raised in a flow water (mean temperature 26.7°C, mean pH 7.52, mean dissolved oxygen 6.05 mg/L) were assessed in this study. Diets (400 g/kg crude protein; 4631.5 kcal/kg gross energy) supplemented with LBLE at levels of 0 (control), 0.5, 1.0, 1.5 or 2.0 g/kg di et were served to fish in triplicates (each replicate has 20 fish) until they appeared satiated for 12 weeks. Then, they were c...
Source: Journal of Animal Physiology and Animal Nutrition - April 13, 2024 Category: Zoology Authors: Bilal Ahamad Paray,
Ibrahim Adeshina,
Eijaz Ahmed Bhat,
Abdullateef Raji,
Samuel B. Umma,
Robiat O. Alliy,
Lateef O. Tiamiyu Tags: ORIGINAL ARTICLE Source Type: research
