BIOLOGY 1A03 Lecture Notes - Lecture 12: Subcutaneous Tissue, Fatty Liver, Marasmus

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 1A03
• Professor: Alastair Tracey

Document Summary

Children look like (cid:862)little old people(cid:863) (cid:894)skin and (cid:271)one(cid:895). Brain development impaired, metabolism slows, lower body temperature, lack of subcutaneous fat. Essential functions preserved by doing as little activity as possible. Typically results from protein deprivation; usually precipitated by an illness. (cid:862)s(cid:449)ollen (cid:271)elly(cid:863) caused by edema of tissues; due to low-plasma protein content that affects fluid balance. Fatty liver may occur due to a lack of protein carriers of lipids. Infections from degradation from antibodies: dysentery anemia heart failure/death. Re(cid:448)ersi(cid:271)le through : rehydration, ele(cid:272)trolyte (cid:271)alan(cid:272)e, gradually adding protein to diet. Rda = 0. 8 g/kg body weight a day. Need dietary protein to : obtain essential amino acids, supply nitrogen to make other proteins. Recommendations assume: protein balance, mixed protein quality. Looks at how genes affect the interaction between diet and disease (nutrigenetics), but how nutrients potentially affect our genes (nutrigenomics). Dna: 46 chromosomes; segments of dna = genes; genes can be translated into a protein.