| || A Note on Periodic Variations in Serum Cholesterol Serum Lecithin Cholesterol Acyl Transferase Activity and FaecalSterol and Bile Acid Excretion in the Rat Fed Different Levels of Dietary Protein
Author : Nath, Narindar
Source : Defence Science Journal ; Vol:26(4) ; 1976 ; pp 175-176
Subject : 577 Biochemistry
Keywords : Dietary protein;LCAT
Abstract : Effects of three different levels of dietary protein (12,20 and 42%) on periodic variations in the serum cholesterol concentration, serum LCAT activity and faecal excretion of bile acids in rats fed hydpercholesteremic diet were investigated. Serum free cholesterol concentration and serum LCAT activity showed minor variations with time in rats ingesting concentration increased progressively but serum LCAT activity showed increase only at the end of 32 days in rats ingesting 20% protein diets. Average daily faecal excretion of bile acids per rat during different periods was lower in animals consuming 12% protein than those consuming higher levels of dietary protein.
| || Changes in Body Tissue Composition of Rats in Relation to Dietary Protein Levels during Rehabilitation
Author : Narayan Prasad, N. ;Siddalinga Swamy, M.;Viswanathan, K.R.
Source : Defence Science Journal ; Vol:49(2) ; 1999 ; pp 123-133
Subject : 612 Physiology;61 Medical Sciences
Keywords : Hyperphagia ;Dietary protein
Abstract : Effect of rehabilitation with marginally sub-optimal and adequate levels of dietary protein following a 50 per cent diet restriction for 10 days was studied in adult rats, The data revealed hyperphagia, supernormal weight gain and greater food efficiency in rehabilitated animals which progressively tapered off on days 9 and lO, irrespective of the dietary protein level. However, the values remained slightly higher than their respective controls. The food efficiency ratio and nitrogen balance which followed the above pattern, on the other hand, returned to control levels in the group that was refed 20 percent protein diet. The weights of liver and muscles of 20 per cent protein diet group were higher than those of 10 per cent protein diet group, while the fat pad weight showed a reverse trend. This was observed only in the case of control and rehabilitated animals. The liver lipid and protein concentrations were less in rehabilitated rats as compared to their ad libitum fed counterparts. The carcasses of control as well as rehabilitated animals on 10 per cent protein diet had less moisture and more fat content than those on 20 per cent protein diet. The carcass in 20 per cent protein diet group had a higher protein content. A linear correlation was observed between body weight and body fat, while a reciprocal relationship existed between the body fat and body water regardless of whether the rats were rehabilitated or restricted fed.