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C Alonso-Villaverde

Publications and source records attributed to C Alonso-Villaverde.

11 recordsLinked to original sources
PubMed2006

Influence of a monocyte chemoattractant protein 1 mutated allele on the response to protease inhibitor-based antiretroviral therapy.

BACKGROUND: Antiretroviral drug efficacy has been widely studied in relation to viral factors. Mutations in the HIV co-receptors and their natural chemokines, however, may be critical in HIV infection and treatment response. We compared the efficacy of protease inhibitor (PI) treatment among PI-naïve patients grouped according to whether they carried the chemokine CC motif receptor 2 (CCR-2) 64I and monocyte chemoattractant protein 1 (MCP-1)-2518G alleles. METHODS AND RESULTS: HIV-infected patients who were PI-naive were selected for the study (n=164) but there was no restriction on lymphocyte CD4 count or plasma HIV viral load. Follow-up was for the first 24 months of treatment. Clinical and laboratory data were obtained every 3 months. All the participants were genotyped for the MCP-1-2518G, CCR-2 64I, CCR-5Delta32 and stromal derived factor 1 (SDF1) 3'A mutated alleles. The results indicated that patients carrying the mutated allele of MCP-1 had a higher mean CD4 cell count throughout the follow-up period than those with the common allele (P=0.01). Also, patients with the MCP-1 and CCR-2 mutated alleles were more likely to continue to have an undetectable viral load following treatment (P=0.05). CONCLUSION: A better response to PI treatment appears to be conferred by mutations in the host MCP-1 and CCR-2 genes, and may be related to the cellular axis-of-entry used by the retrovirus.

Adult↗
PubMed1999

[Clinical manifestations of familial hypercholesterolemia in Mediterranean population].

BACKGROUND: Familial hypercholesterolemia is defined by a genetically elevated concentration of plasma cholesterol. This is a descriptive and retrospective study to evaluate the prevalence of clinical manifestations of FH clinically diagnosed in our setting. PATIENTS AND METHODS: 114 non-related patients, from lipid clinics, entered into the study. Analytical criteria were total cholesterol over 7.8 mmol/l (300 mg/dl), triglycerides under 2.8 mmol/l (250 mg/dl), and at least one first-degree relative bearing the same lipid profile. Clinical history, antropometric measurements, lipid deposits and profile, treatment and its effects on lipid levels were recorded. Lipoprotein (a) concentration, apolipoprotein E (apo E) genotype and the presence of apo B-3500 mutations were analysed. RESULTS: Mean total cholesterol was 9.05 (1.58) mmol/l, LDL-cholesterol 7.09 (1.64) mmol/l, HDL-cholesterol 1.33 (0.45) mmol/l and triglyceride 1.38 (0.59) mmol/l. Xanthomas were found in 11.4% of the participants, 12.2% showed xanthelasmas and corneal arch was present in 27.1% of them. The 16.8% of the patients were suffering from ischaemic cardiopathy. Patients with corneal arch had higher concentrations of total and LDL-cholesterol (7.6 [1.9] vs 6.8 [1.5] mmol/l [p = 0.04]). A 57.9% of the patients with ischaemic heart disease had at least one first degree relative with the same complaint (p < 0.05). The apo B-3500 mutation was not found in this population. The apo E3/E4 genotype was present in 16.1% of the patients and total and LDL cholesterol concentrations were higher in them than in patients with the apo E3/E3 genotype (p < 0.05). In the multivariate analysis, the most important risk factors associated with ischaemic cardiopathy were the smoking habit (odds ratio [OR] = 20.59; CI: 3.3-111.2), corneal arch (OR = 7.27; 95% CI: 1.08-27.1). HDL-cholesterol concentrations were negatively associated with the existence of ischaemic heart disease (OR = 0.21; 95% CI: 0.03-1.15). CONCLUSIONS: The presence of ischaemic heart disease and lipids deposits in clinically diagnosed patients of familial hypercholesterolemia in our country is lower than description from others non Mediterranean, being the corneal arch the most prevalent sign. The smoking habit, corneal arch and the presence of familial antecessors with ischaemic heart disease were associated with ischaemic myocardiopathy in our patients.

Adult↗
PubMed1998

Effect of malabsorption on nutritional status and resting energy expenditure in HIV-infected patients.

OBJECTIVE: To assess the influence of malabsorption on nutritional status and energy expenditure in patients at different stages of HIV infection. DESIGN AND METHODS: Fifty HIV patients were classified into three groups: Group 1, HIV asymptomatic patients (n=17); Group 2, AIDS without opportunistic infection (n=16); Group 3, AIDS patients with active infection (n=17). Clinically-healthy subjects (n=19) were used as controls. Parameters measured were: anthropometry, body composition by tetrapolar bioelectrical impedance; resting energy expenditure (REE) by open-circuit indirect calorimetry; malabsoption by D-xylose absorption and triolein breath tests. RESULTS: Malabsorption (defined as abnormality of xylose and/or fat absorption test) was found in 34 (68%) of patients: 9 (53%) Group 1; 11 (69%) Group 2; 14 (82%) Group 3. Twenty-seven (54%) had sugar malabsorption and 21 (42%) fat malabsorption. A significant relationship was observed between malabsorption and weight loss. REE measured was significantly lower in malabsorptive patients than in non-malabsorptive patients and controls (6006.3+/-846.5 versus 6443.4 + 985.5 versus 6802.1+/-862.7 kJ/day, respectively; P < 0.05). The REE adjusted for fat-free mass was lower in malabsorptive than in non-malabsorptive patients and slightly higher than in controls, although the differences were not statistically significant. CONCLUSIONS: The results suggest that malabsorption is a frequent feature in HIV infection and is related to the HIV-related weight loss. Hypermetabolism is not a constant phenomenon in HIV infection since, in the presence of malabsorption, our patients show an appropriate metabolic response with a compensatory decrease in REE.

Adult↗