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EnergyMetabolism

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8
422

Citric Acid Cycle (Kreb's Cycle) Made Easy

The various key features of the citric acid cycle, otherwise known as the Kreb's cycle.  
youtube.com
almost 4 years ago
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0
2

Critical Care

Measurement of energy expenditure (EE) is recommended to guide nutrition in critically ill patients. Availability of a gold standard indirect calorimetry is limited, and continuous measurement is unfeasible. Equations used to predict EE are inaccurate. The purpose of this study was to provide proof of concept that EE can be accurately assessed on the basis of ventilator-derived carbon dioxide production (VCO2) and to determine whether this method is more accurate than frequently used predictive equations.  
ccforum.com
almost 4 years ago
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0
15

Critical Care

A substantial number of patients admitted to the ICU because of an acute illness, complicated surgery, severe trauma, or burn injury will develop a de novo form of muscle weakness during the ICU stay that is referred to as “intensive care unit acquired weakness” (ICUAW). This ICUAW evoked by critical illness can be due to axonal neuropathy, primary myopathy, or both. Underlying pathophysiological mechanisms comprise microvascular, electrical, metabolic, and bioenergetic alterations, interacting in a complex way and culminating in loss of muscle strength and/or muscle atrophy. ICUAW is typically symmetrical and affects predominantly proximal limb muscles and respiratory muscles, whereas facial and ocular muscles are often spared. The main risk factors for ICUAW include high severity of illness upon admission, sepsis, multiple organ failure, prolonged immobilization, and hyperglycemia, and also older patients have a higher risk. The role of corticosteroids and neuromuscular blocking agents remains unclear. ICUAW is diagnosed in awake and cooperative patients by bedside manual testing of muscle strength and the severity is scored by the Medical Research Council sum score. In cases of atypical clinical presentation or evolution, additional electrophysiological testing may be required for differential diagnosis. The cornerstones of prevention are aggressive treatment of sepsis, early mobilization, preventing hyperglycemia with insulin, and avoiding the use parenteral nutrition during the first week of critical illness. Weak patients clearly have worse acute outcomes and consume more healthcare resources. Recovery usually occurs within weeks or months, although it may be incomplete with weakness persisting up to 2 years after ICU discharge. Prognosis appears compromised when the cause of ICUAW involves critical illness polyneuropathy, whereas isolated critical illness myopathy may have a better prognosis. In addition, ICUAW has shown to contribute to the risk of 1-year mortality. Future research should focus on new preventive and/or therapeutic strategies for this detrimental complication of critical illness and on clarifying how ICUAW contributes to poor longer-term prognosis.  
ccforum.com
about 4 years ago
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0
8

Redox Reactions Explained - Quick Chemistry Review (Examville)

Redox Reactions Explained - Quick Chemistry Review Join for FREE - Examville.com® - the education marketplace (TM). http://www.Examville.com  
youtube.com
over 4 years ago
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0

Redox Reactions Explained - Quick Chemistry Review (Examville) - YouTube

Redox Reactions Explained - Quick Chemistry Review Join for FREE - Examville.com® - the education marketplace (TM). http://www.Examville.com  
youtube.com
over 4 years ago
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0
10

Mapping energy metabolism of growing nerve cells to better understand neuronal disorders

Scientists from Kyoto University's Institute for Integrated Cell-Material Sciences (iCeMS) in Japan have have discovered how nerve cells adjust to low energy environments during the brain's...  
medicalnewstoday.com
over 4 years ago
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0
16

Biology Help: Biology 123 Chapter 6 Cell Respiration--A Light Overview

Cell respiration, oxidative, glucose, ATP, oxygen, carbon dioxide, substrate, oxidation, reduction, glycolysis, krebs cycle, Citric Acid Cycle, NADH, FADH2, ...  
youtube.com
over 4 years ago
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1
23

Understanding F-2,6-BP & Glycolysis (USMLE Step 1)

http://www.usmlesuccess.net A look at the formation of the allosteric activator of PFK-1 in glycolysis. This high-yield nugget is essential for the Step 1 ex...  
youtube.com
over 4 years ago
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0
14

Bioenergetics: The transformation of free energy in living systems

Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT...  
youtube.com
over 4 years ago
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1
25

6. Hormones of the Adipose Tissue • Functions of Cells and Human Body

Its cells (adipocytes) form an extensive amount of peptide hormones known as adipokines (or adipocytokines). In general, they mainly regulate the energy metabolism and their effect on appetite and feeding behaviour influences a long-term regulation of the body weight. Apart from affecting the metabolism they also modulate immune functions and the course of the inflammatory processes. Among the most important and well-known hormones are leptin, adiponectin and resistin.  
fblt.cz
over 4 years ago
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5
89

Physiology of the pancreatic α-cell and glucagon secretion: role in glucose homeostasis and diabetes

The secretion of glucagon by pancreatic α-cells plays a critical role in the regulation of glycaemia. This hormone counteracts hypoglycaemia and opposes insulin actions by stimulating hepatic glucose synthesis and mobilization, thereby increasing blood glucose concentrations. During the last decade, knowledge of α-cell physiology has greatly improved, especially concerning molecular and cellular mechanisms. In this review, we have addressed recent findings on α-cell physiology and the regulation of ion channels, electrical activity, calcium signals and glucagon release. Our focus in this review has been the multiple control levels that modulate glucagon secretion from glucose and nutrients to paracrine and neural inputs. Additionally, we have described the glucagon actions on glycaemia and energy metabolism, and discussed their involvement in the pathophysiology of diabetes. Finally, some of the present approaches for diabetes therapy related to α-cell function are also discussed in this review. A better understanding of the α-cell physiology is necessary for an integral comprehension of the regulation of glucose homeostasis and the development of diabetes.  
joe.endocrinology-journals.org
over 4 years ago
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2
30

Cellular Respiration 2 - Glycolysis

http://www.handwrittentutorials.com - This tutorial is the second in the Cellular Respiration series. This tutorial provides a complete description of Glycol...  
YouTube
almost 5 years ago
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1
29

Cellular Respiration 3 - TCA Cycle (Krebs Cycle)

http://www.handwrittentutorials.com - This tutorial is the third in the Cellular Respiration series. This tutorial provides an overview of the TCA Cycle (als...  
YouTube
almost 5 years ago
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1
33

Cellular Respiration 5 - Oxidative Phosphorylation

http://www.handwrittentutorials.com - This tutorial is the fifth in the Cellular Respiration series. This tutorial provides an overview of Oxidative Phosphor...  
YouTube
almost 5 years ago
Maxresdefault
2
60

Cellular Respiration 2 - Glycolysis

http://www.handwrittentutorials.com - This tutorial is the second in the Cellular Respiration series. This tutorial provides a complete description of Glycol...  
YouTube
over 5 years ago
Maxresdefault
3
141

Cellular Respiration 3 - TCA Cycle (Krebs Cycle)

http://www.handwrittentutorials.com - This tutorial is the third in the Cellular Respiration series. This tutorial provides an overview of the TCA Cycle (als...  
YouTube
over 5 years ago
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2
65

Cellular Respiration 5 - Oxidative Phosphorylation

http://www.handwrittentutorials.com - This tutorial is the fifth in the Cellular Respiration series. This tutorial provides an overview of Oxidative Phosphor...  
YouTube
over 5 years ago
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7
137

Human Metabolism Map I - Glycolysis

Really angry about my computer. Sorry for the noise, hope you enjoy the video though!!  
Nicole Chalmers
over 5 years ago
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4
53

Regulation of Glycolysis and Gluconeogenesis

Regulatory reaction in Glycolysis and Gbuconeogensis, and what products, enzymes and components promote or inhibit the enzymes in these reactions. Facebook: http://www.facebook.com/ArmandoHasudungan  
Nicole Chalmers
over 5 years ago
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2
88

PART I - Oxidative Phosphorylation, Electron Transport Chain

http://www.facebook.com/ArmandoHasudungan  
Nicole Chalmers
over 5 years ago