Variability in the Chemical Composition of Human Skin Surface Lipids* By Donald T.Downing,John S.Strauss and Peter E.Pochi.Get PDF (315 KB) Cite .BibTex; Full citation Abstract.Quantitative thin-layer chromatography was employed for the analysis of forehead surface lipid from adult males over periods of up to fourteen months. results for this questionWhat are the microbial communities in the skin?What are the microbial communities in the skin?We discuss recent insights into skin microbial communities,including their composition in health and disease,the dynamics between species and interactions with the immune system,with a focus on Propionibacterium acnes,Staphylococcus epidermidis and Staphylococcus aureus.The human skin microbiome Nature Reviews Microbiology results for this questionWhat is the chemical composition of hides?What is the chemical composition of hides?CHEMICAL COMPOSITION OF HIDES SKINS The chemical composition of fresh hides and skins falls approximately within the following limits Water 60%-65% Protein 25%-30% Fats 5%-10% 2 STRUCTURE OF HIDES AND SKINS Most hides and skins consist of three parts,such as (i) Epidermis,(ii) Corium or true skin and (iii) Hypodermic or adipose tissue.CHEMICAL COMPOSITION OF HIDES SKINS
ome of the variability in proportions chole tero l and wax esters could conceivably have been due to differing degrees of topical contamination of the skin with food fats,which ar lmo st exclu ively triglycerides.The pos sibl e effect of this variable was eliminated byCited by 161Publish Year 1974Author Donald T.Downing,John S.StraussChemical Composition of Human Skin Surface Lipids from Feb 01,1970·Skin surface lipids from the foreheads of 51 subjects between the ages of five days and fifteen years were analyzed by quantitative thin-layer chromatography.The cholesterol concentrations were low at birth,at maximum levels at six years of age,and low again,almost to adult levels,at nine years.Conversely,average concentrations of wax esters were high at birth,low between the ages of
imagesVariability in the chemical composition of human skin 1.J Invest Dermatol.1969 Nov;53(5):322-7.Variability in the chemical composition of human skin surface lipids.Downing DT,Strauss JS,Pochi PE.Cited by 202Publish Year 1969Author Donald T.Downing,John S.Strauss,Peter E.PochiVariability in the Chemical Composition of Human Skin Enter the password to open this PDF file Cancel OK.File name:-Cited by 202Publish Year 1969Author Donald T.Downing,John S.Strauss,Peter E.PochiVariability in the Chemical Composition of Human Skin Variability in the Chemical Composition of Human Skin Surface Lipids* Author links open overlay panel Donald T.Downing Ph.D.John S.Strauss M.D.Peter E.Pochi M.D.Show more
Variability in the Chemical Composition of Human Skin Surface Lipids* By Donald T.Downing,John S.Strauss and Peter E.Pochi.Cite .BibTex; Full citation; Publisher 'Springer Science and Business Media LLC' Year 2011.DOI identifier 10.1038/jid.1969.157.OAI identifier Provided by MUCC Cited by 213Publish Year 1970Author Petra Ramasastry,Donald T.Downing,Peter E.Pochi,John S.StraussThe Elemental Composition of the Human Body Oxygen.By mass,oxygen is the most abundant element in the human body.If you think about it,Carbon.All living organisms contain carbon,which forms the basis for all of the organic moleculesHydrogen.Hydrogen accounts for 10% of the mass of the human body.Uses.Since around 60%Nitrogen.Approximately 3% of the mass of the human body is nitrogen.Uses.Proteins,nucleicCalcium.Calcium accounts for 1.5% of human body weight.Uses.Calcium is used to give thePhosphorus.About 1.2% to 1.5% of your body consists of phosphorus.Uses.Phosphorus isPotassium.Potassium makes up 0.2% to 0.35% of the adult human body.Uses.Potassium is anSulfur.Sulfur's abundance is 0.20% to 0.25% in the human body.Uses.Sulfur is an importantSodium.Approximately 0.10% to 0.15% of your body mass is the element sodium.Uses.SodiumMagnesium.The metal magnesium comprises about 0.05% of human body weight.Uses.AboutPeople also askWhat is the chemical composition of the human body?What is the chemical composition of the human body?Here's a look at the chemical composition of the human body,including element abundance and how each element is used.Elements are listed in order of decreasing abundance,with the most common element (by mass) listed first.Approximately 96% of body weight consists of only four elements oxygen,carbon,hydrogen,and nitrogen.The Elemental Composition of the Human Body
Mar 01,1974·III.Fatty chains in skin lipids.The use of vernix caseosa to differentiate between endogenous and exogenous components in human skin surface lipid J.Am.Oil Chem.Soc 42 (1965) 702-707 Nicolaides and Rothman,1952 N.Nicolaides,S.Rothman,Studies on the chemical composition of human hair fat.I.Variability in the Chemical Composition of Human Skin Report Variability in the Chemical Composition of Human Skin Surface Lipids* Donald T.Downing,Ph.D.John S.Strauss,M.D.Peter E.Pochi,M.D.* From the Departments of Dermatology and Biochemistry,Boston University School of Medicine and the Evans Memorial Department of Clinical Research,University Hospital,Boston University Medical Variability in the Chemical Composition of Human Skin of the variability of sebum composition in the individual,either on a day-to-day basis or as the result of long-term trends.Since skin surface lipid composition,partic-ularly free fatty acid concentration,seems to be involved in the pathogenesis of acne (4),it is of importance to be able to determine the effect of therapy on lipid composition.