Main Page
Faculty Deanship
Dean
Health Empowerment Unit
Strategic Planning Unit
Development and Quality Unit
Medical and Bioethics Unit
Vice Dean for Graduate Studies and Research
Vice Dean for Female Section
Vice dean for Academic Affairs
Examination and Assessment Unit
Internship and Alumni Unit
Student Research Unit
E-learning Unit
Student Mentoring and Support Unit
Community Service Unit
Talent and Creativity Care Unit
Continuing Education Unit
Neuroscience Research Unit
Vice Deanship of Clinical Affairs / Administration
Organizational Structure
Departments
Basic Sciences
Department of Anatomy
Department of Pharmacology
Department of Pathology
Department of Microbiology and Medical Parasitolog
Deparment of Clinical Biochemistry
Department of Physiology
Department of Medical Genetics
Clinical Sciences
Department of Otorhinolaryngology
Department of Obstetrics and Gynecology
Department of Hematology
Department of Medical Education
Department of Anesthesia
Department of Family Medicine
Department of Community Medicine
Department of Surgery
Department of Orthopedic Surgery
Department of ophthalmology
Department of Radiology
Department of Internal Medicine
Department of Pediatrics
Department of Emergency Medicine
Department of Urology
Department of Dermatology
Latest News
عربي
English
About
Admission
Academic
Research and Innovations
University Life
E-Services
Search
Faculty of Medicine
Document Details
Document Type
:
Article In Journal
Document Title
:
Metabolism of glucose, glutamine, long-chain fatty acids and ketone bodies by lungs of the rat
Metabolism of glucose, glutamine, long-chain fatty acids and ketone bodies by lungs of the rat
Subject
:
Biochemistry
Document Language
:
English
Abstract
:
The maximum activities of some key enzymes of metabolism were studied in lungs of fed and 48-h-starved rats. The maximum activity of hexokinase in the lung is similar to that of other tissues of the body, but lower than that of phosphorylase and 6-phosphofructokinase. High activities of glucose-6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase were found in lung tissue, suggesting the importance of the pentose phosphate pathway in the lung. The activities of hexokinase and 6-phosphofructokinase were decreased whereas that of phosphorylase increased in response to starvation. Of the enzymes of the tricarboxylic acid cycle whose activities were measured, that of oxoglutarate dehydrogenase was the lowest, yet its activity (approximately 4.2 nmol/min per mg protein at 37 degrees C) was considerably greater than the flux through the cycle (0.46 nmol/min per mg protein at 37 degrees C; calculated from oxygen consumption by incubated lung slices). The activities of both oxoglutarate dehydrogenase and citrate synthase were decreased by starvation. The activities of 3-oxoacid CoA-transferase and acetoacetyl-CoA thiolase were low in lung tissue compared to those of other tissues (eg kidney, brain) and that of 3-hydroxybutyrate dehydrogenase was very low. The activity of carnitine palmitoyl transferase is higher in the lung, suggesting that fatty acids (and possibly acetoacetate) could provide acetyl-CoA as substrate for the tricarboxylic acid cycle. Very low rates of utilization of 3-hydroxybutyrate were observed during incubation of lung slices, but that of oleate was 1.2 nmol/h per mg of protein
ISSN
:
1638-6183
Journal Name
:
Biochimie
Volume
:
73
Issue Number
:
5
Publishing Year
:
1411 AH
1991 AD
Article Type
:
Article
Added Date
:
Monday, December 5, 2011
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
محمد العرضاوي
Ardawi, Mohammed
Researcher
Doctorate
Files
File Name
Type
Description
31530.pdf
pdf
Back To Researches Page