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Aim: The aim of this study was to evaluate the effect of long-term administration of liquid nutritional supplement with increased amounts of whey protein and reduced amounts of lactose, produced in accordance with a new recipe "Nutrisen" on the elderly living in institutionalized care., Methods: The study was carried out from May to July, 2013, on 47 retirement home residents, living in Prague, all of which were 65 years or older. Supplemented group (n = 23) consumed (200 ml) milk drinks with three different flavours on a daily basis for eight weeks. The reference group was on a normal diet. There was no significant difference in baseline characteristics between participants in both groups. Anthropometric and biochemical indicators of nutritional status and tolerance of the nutritional supplement during long-term use were evaluated., Results: Both compliance (daily intake program) and tolerance of the nutritionally defined supplement were very good. For the supplemented group, there was an average weight increased of 700 grams after the 8 week nutritional supplement test period. Average levels of albumin and prealbumin increased significantly (from the beginning to the end of the program), 35.5 ± 4.52 g/l vs 36.19 ± 4.1 g/l and 0.160 ± 0.05 vs 0.174 ± 0.04 g/l (p < 0.05), vitamin D levels increased from 31.2 ± 16.4 nmol/l to 36.8 ± 17.7 nmol/l (p < 0.001) and HDL-cholesterol levels increased from 1.29 ± 0.33 mmol/l to 1.35 ± 0.35 mmol/l (p < 0.001)., Conclusion: The specific nutritionally defined milk drink (Nutrisen), used in this study, was well tolerated by the elderly study participants, over the eight-week clinical study. We observed a positive effect on the participants weight, serum albumin, prealbumin, vitamin D and HDL-cholesterol.

Aim of the Study: Assessment of prevalence of GBV-C/HGV infection in HIV-infected patients and evaluating of a possible influence of GBV-C/HGV on the course of HIV infection by assessment of immunological and virological markers of progression of HIV infection., Materials and Methods: We have investigated serum samples of 273 HIV- infected patients from AIDS Center of the University Hospital Na Bulovce Prague during 2002-2003. Our target was to assess the presence of markers of GBV-C/HGV infection by semiquantitative HGV RNA evaluation and anti-E2 antibodies by ELISA testing. 271 of serum samples were tested for HGV RNA and 269 samples were tested for anti-E2 antibodies. HIV viral load and CD4 count were tested concurrently. We used Spearmans test to rule out the dependency of CD4 count and HIV viral load on HGV infection., Results: 89 (33,3 %) of patients were positive in HGV RNA test and 101 (38,5 %) of patients were positive in anti E2-ELISA. No statistically significant effect of GBV-C/HGV infection was observed on CD4 count and HIV viral load in our cohort of patients., Conclusions: The effect of GBV-C/HGV infection on predictive laboratory markers of HIV infection was not confirmed in our study. Further investigations regarding this subject seem to be necessary.