scholarly journals The Plasma Level of Insulin-like Growth Factor-I (IGF-I) in Relation to Mammary Circulation and Milk Yield in Two Different Types of Crossbred Holstein Cattle

2004 ◽  
Vol 17 (3) ◽  
pp. 343-348 ◽  
Author(s):  
N. Chaiyabutr ◽  
S. Komolvanich ◽  
S. Thammacharoen ◽  
S. Chanpongsang
2013 ◽  
Vol 114 (10) ◽  
pp. 573-580 ◽  
Author(s):  
T. Zatko ◽  
B. Matejovicova ◽  
M. Boledovicova ◽  
M. Vondrakova ◽  
A. Bezakova ◽  
...  

1989 ◽  
Vol 56 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Colin G. Prosser ◽  
Ivan R. Fleet ◽  
Anthony N. Corps

SummarySix lactating, non-pregnant Jersey cows were given subcutaneous injections of recombinantly derived bovine growth hormone for 7 d. Milk yield was increased by 4·5 kg/d on d 7, compared with the average yield of 10·7 ± 0·4 kg/d (mean ± s. e. m.) for the 7d preceding treatment. Concentrations of insulin-like growth factor I (IGF-I) in the milk increased from 0·44 ± 0·04 nmol/1 (mean ± s. e. m.) during the 7 d preceding treatment to 1·6 ± 0·2 nmol/1 on d 7 of treatment. Taking the increase in milk yield into account the total increase in the secretion of IGF-I into milk of one udder half was 6-fold. Plasma concentrations of total IGF-I rose from 15·5 + 1·3 nmol/1 (mean ± s. e. m.) on the day preceding treatment to 56·9 ± 3·6 nmol/1 (mean ± s. e. m.) on d 7 of treatment. Mammary plasma flow increased from 1·6 ± 0·09 to 2·2 ± 0·06 1/min udder half over the same time. Estimates of the amount of IGF-I that reached the mammary gland gave values of 24 and 116 nmol/min udder half before and during treatment respectively. IGF-I in milk of treated cows was associated predominantly with proteins ranging from 40000 to 150000 mol. wt, but a significant proportion (19%) of the total IGF-I was present in the free unbound form. IGF-I crosslinking studies revealed the presence in milk of one specifically labelled band at 31000 mol. wt.


2019 ◽  
Vol 1 (2) ◽  
Author(s):  
Luh Mas Rusyati ◽  
Made Swastika Adiguna ◽  
Indra Teguh Wiryo

Introduction: Leprosy is one of infectious diseases with complex issues. Previous study showed poverty, malnutrition, lack of proper food and nutrient intake, as well as low income. Recently, many studies reported insulin-like growth factor-I (IGF-I) as excellent nutrient marker.Objective: This study aims to prove that low plasma level of insulin-like growth factor-I is a risk factor for multibacillary type of leprosy. Material and methods: This case-control study design involved 38 patients with leprosy subjects as cases and 38 control subjects. The sample collection is done by consecutive sampling and has fulfilled the inclusion and exclusion criteria which matched by age and gender in Dermatology and Venereology Outpatient clinic of Sanglah General Hosptital. The collected data was analyzed using SPSS version 23.0 with Pearson Chi square test to obtain Odds Ratio. Results: This study showed that IGF-I plasma levels in the case group were significantly lower than the control group (p<0.05) with Odds ratio for IGF-I plasma 34.61 (95% CI= 7.17-167.01, p<0.001)Conclusion: Low plasma level of insulin-like growth factor-I is a risk factor for multibacillary type of leprosy.


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