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Downloaded from rsbl.royalsocietypublishing.org on November 16, 2012 Metabolic effects of CO2 anaesthesia in Drosophila melanogaster H.
antarctica has revealed several key molecular mechanisms of dehydration tolerance, including expression of heat shock proteins (11), aquaporins (12, 13), and metabolic genes (14), we lack a comprehensive understanding of the genes and pathways involved in extreme dehydration tolerance.
acquire energy anabolism عمليات البناء Use energy catabolism عمليات الهدم chemical انها عبارة عن مجموعة من الـmetabolism المفهوم العام لكلمة الوحيد فـcatalyst هى الـenzymes والـenzymes بتحفزها الـreaction biochemistry الـ catabolism or anabolism سواءcell بتستغلها الـenergy التفاعالت دى بتنتج وده بيتم فـ صورة Synthesis , storage , degradation and eliminatin of substanes 2-Metabolic pathway "
www.elsevier.com/locate/expgero Similar post-stress metabolic trajectories in young and old ﬂies ⁎ T Hervé Colinet , David Renault UMR CNRS 6553 EcoBio, Université de Rennes 1, 263 Avenue du General Leclerc, CS 74205, 35042 Rennes Cedex, France A R T I C L E I N F O A B S T R A C T Section Editor:
We have used targeted GC ⁄ MS metabolomic proﬁling to address whether cold acclimation induced speciﬁc metabolic changes and affected the dynamics of the homeostatic response following different types of cold stress (acute and chronic).
Endocrinology and Metabolic Processes Regulation Athletic Success via Biochemical Supplementation ● ● ● Author: Eva Date: 20160130 Rev: 1.2.1 Note : This is a work in progress for my own purposes. It is currently evolving. Resources are listed in brackets with source links at the end of the document. If otherwise not noted/bracketed, the writing is from the author’s own contextual knowledge. Conclusions are bolded where deemed relevant to a topic. A Quick Intro to Endocrinology and Metabolism Prior to getting into any concepts or useful conclusions there are several background terms and elements that the reader should be familiar with. We’ll start with fundamentals and touch on several core elements before introducing the cyclical elements of endocrinology and the metabolic cycle. These terms, concepts, and cycles are essential to understanding how one’s diet and hormonal balances are controlled by diet, which in turn defines how our physical form is capable of performance, growth, decline, and overall change. Fundamental Terms The following terms will come up occasionally throughout this document and, as such, one would benefit from knowing the context around them prior to continuing. Endogenous Originating from within an organism, not attributable to any external or environmental factor. eg: biologically produced estrogen created by the ovaries. Exogenous Originating from outside an organism, caused by an agent or organism outside the body. eg: hormone replacement medication taken by injection. MacroNutrients The combined requirements of base nutrition required to sustain healthy human existence. There are three primary macronutrients: protein, fat, and carbohydrate.  Macronutrients are defined as a class of chemical compounds which humans consume in the largest quantities (must be above a threshold amount) and which provide humans with the bulk of energy.  CNS, The Central Nervous System The central nervous system is composed of the brain and spinal cord. Your brain and spinal cord serve as the main "processing center" for the entire nervous system, and control all the workings of your body. PSN, The Peripheral Nervous System The peripheral nervous system consists of the nerves that branch out from the brain and spinal cord. These nerves form the communication network between the CNS and the body parts. The peripheral nervous system is further subdivided into the somatic nervous system and the autonomic nervous system. The somatic nervous system consists of nerves that go to the skin and muscles and is involved in conscious activities. The autonomic nervous system consists of nerves that connect the CNS to the visceral organs such as the heart, stomach, and intestines. It mediates unconscious activities. Endocrinology A branch of biology and medicine dealing with the endocrine system, its diseases, and its specific secretions known as hormones. It is also concerned with the integration of developmental events proliferation, growth, and differentiation, and the psychological or behavioral activities of metabolism, growth and development, tissue function, sleep, digestion, respiration, excretion, mood, stress, lactation, movement, reproduction, and sensory perception caused by hormones. Metabolism The set of lifesustaining chemical transformations within the cells of living organisms. These enzymecatalyzed reactions allow organisms to grow and reproduce, maintain their structures, and respond to their environments. Pharmacokinetics Sometimes described as what the body does to a drug, refers to the movement of drug into, through, and out of the body the time course of its absorption, bioavailability, tissue distribution, metabolism, and excretion.  Endocrinology: Communication and Message Relays The endocrine system is a collection of glands that secrete hormones directly into the circulatory system to be carried towards distant target organs. The major endocrine glands include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid, parathyroid, hypothalamus, gastrointestinal tract, and adrenal glands. The Role of Hormones in Endocrinology Hormones are the body’s signaling molecules that are used to communicate between organs and tissues. They regulate physiological and behavioral activities, such as digestion, metabolism, respiration, tissue function, sensory perception, sleep, excretion, lactation, stress, growth and development, movement, reproduction, and mood. The particulars of each hormone are covered in the section titled “Neurotransmitters, Hormones, and Histamines”. An Overview of Hormonal Biosynthesis Receptors In biochemistry and pharmacology, a receptor is a protein molecule usually found embedded within the plasma membrane surface of a cell that receives chemical signals from outside the cell.
www.elsevier.com/locate/cbpa Does cold tolerance plasticity correlate with the thermal environment and metabolic proﬁles of a parasitoid wasp?
10.3389/fphys.2018.01506 Cold Acclimation Favors Metabolic Stability in Drosophila suzukii Thomas Enriquez 1 , David Renault 1,2 , Maryvonne Charrier 1 and Hervé Colinet 1* 1 Edited by:
RESEARCH ARTICLE Obesity, Diabetes and Energy Homeostasis Cold acclimation triggers lipidomic and metabolic adjustments in the spotted wing drosophila Drosophila suzukii (Matsumara) X Thomas Enriquez and Hervé Colinet Université Rennes 1, Centre National de la Recherche Scientifique, Rennes, France Submitted 29 November 2018;
Metabolic and Proteomic Profiling of Diapause in the Aphid Parasitoid Praon volucre Herve´ Colinet1,2*¤, David Renault2, Blandine Charoy-Gue´vel3, Emmanuelle Com3 1 Earth and Life Institute ELI, Biodiversity Research Centre BDIV, Catholic University of Louvain, Louvain-la-Neuve, Belgium, 2 Universite´ de Rennes 1, UMR CNRS 6553 Ecobio, Rennes, France, 3 Proteomics Core Facility Biogenouest, INSERM U1085 IRSET, Campus de Beaulieu, Universite´ de Rennes 1, Rennes, France Abstract Background:
We also tested whether development, body mass, fat stores, metabolites composition and metabolic pathways were altered by these dietary manipulations.
Cold exposure and associated metabolic changes in adult tropical beetles exposed to fluctuating thermal regimes L.
The physiological response to FTs, such as metabolic rate changes, are asymmetrical (118), with limited effects of decreasing temperatures and greater effects of increasing temperatures (57, 81) (Figure 2).
www.elsevier.com/locate/cbpa Dietary live yeast alters metabolic proﬁles, protein biosynthesis and thermal stress tolerance of Drosophila melanogaster Hervé Colinet ⁎, David Renault Université de Rennes 1, UMR CNRS 6553 Ecobio, 263 Avenue du Gal Leclerc, CS 74205, 35042 Rennes, France a r t i c l e i n f o Article history:
It inﬂuences metabolic activities, development rates and growth (e.g., Sinclair et al., 2003).
Nutrition Microbiota Developmental plasticity Stress tolerance Metabolic rate The dietary nutrient composition can affect insects' phenotypes by modulating their physiology.
Prolonged exposure to low temperature was also associated with a marked deviation of metabolic homeostasis and warm interruptions as short as 2 h were sufﬁcient to periodically return the metabolic system to functionality.
Inhibition of proteins due to conformational changes results in many kinds of effects within cells, such as impairment of enzymatic functions and metabolic processes (Korsloot et al., 2004).
Drew Lyons Micah Mansfield Animal Design Project #1 Thrinaxodon Thrinaxodon, a synapsid cynodont, was a small, mammallike reptile that lived 253 million years ago in the late Permian. It disappeared during the extinction event 245 million years ago at the end of the Olenekian portion of the Triassic period. The discovery of Thrinaxodon was important as a transitional fossil in the evolution of mammals. Cladogram showing the relationship of Thrinaxodon to mammals (Botha and Chinsamy, 2005). Fossils of Thrinaxodon were found in modern day South Africa and Antarctica, providing strong evidence that Thrinaxodon once roamed an area that combined these land masses because the physiology of Thrinaxodon suggests it could neither swim long distances nor fly. Current day separation of fossils by a vast ocean helped scientists understand plate tectonics and the existence of a supercontinent called Pangea. Pangea: Image taken http://www.metafysica.nl/wings/wings_3a.html. The inserted black box shows the location where Thrinaxodon fossils were found and where it likely lived during the Late Permian and Early Triassic periods. Thrinaxodon was 30 to 50 cm in length, 10 cm tall, had a large, flat head and legs somewhat characteristic of fossorial animals that splayed out slightly from the torso, creating a 15 cm wide stance. Indentations in fossils of its skull provide strong evidence that Thrinaxodon had whiskers. Whiskers are a very beneficial adaptation for predators at night because it would allow the animal to better sense its surroundings in low light conditions, giving it a competitive advantage over its prey and other predators that compete for similar resources. If it had whiskers then there may have been fur as well, indicating that it was homeothermic since fur functions to insulate the animal from the outside conditions, so the animal’s temperature is being driven more by internal processes. Being one of the earliest mammallike organisms with fur, it was most likely less dense than the fur modern mammals have (prehistoricwildlife.com, 2011). Thrinaxodon had many mammalianlike adaptations that in ways allowed it to function in similar ways as modern day mammals, suggesting it was a distant ancestor of mammals. Key morphological innovations allowed for increased metabolic rates and its survival through the PermianTriassic extinction event. These included features in Thrinaxodon’s skeleton such as the addition of lumbar vertebrae on the spine and the shortening of thoracic vertebrae, one additional occipital condyle, the presence of a masseteric fossa, and a hardened secondary palate. The segmentation of the spine allowed for increased weight bearing and movement in the lower back. Segmentation, in combination with the absence of ribs in the lower abdomen, suggests the presence of a diaphragm. The ribs now form a chest cavity that houses the lungs and provides an attachment surface for the diaphragm, which allows for increased respiration efficiency and minimum energy expenditure due to breathing (Cowen, 2000). The addition of an occipital condyle functioned to increase articulation with the atlas vertebrae and permitted more movement, which allowed it to be more aware of its surroundings and potential predators. The masseteric fossa presented a larger surface area for muscle attachment on the dentary bone to make chewing and processing food more efficient, which in turn leads to a faster metabolism. One of the most important adaptations, especially for carnivores, is the presence of the hardened secondary palate that allowed for breathing through the nose while chewing, which is important in order to take down struggling prey or chew for a longer period of time while still maintaining the ability to breathe (prehistoricwildlife.com, 2011). Thrinaxodon also possesses the beginnings of a brain case, which is shown by the epipterygoid bone expanding to alisphenoidlike proportions, as well as nasal turbinates, which are “convoluted bones in the nasal cavity that are covered by olfactory sense organs” (Cynodontia). The teeth of Thrinaxodon display the mammalian traits of thecodontia (teeth present in the socket of the dentary) and differentiated teeth. In its tooth differentiation, the three cusped post canines that Thrinaxodon was named after were important so it could thoroughly chew its food and decrease the time of digestion. This also suggests a faster metabolism that was more like modern mammals, as well as an important evolutionary step towards the tribosphenic molar (Estes, 1961). Due to this increased metabolism, Thrinaxodon was eurythermic, meaning it was able to function in a broad range of temperatures, and was essentially homeothermic.
This presents a global health concern as research has found correlations between arsenic exposure and disorders such as cancer, heart disease and the metabolic syndrome.