Socio-demographic,behavioral and functional characteristics of groups of community and institutionalized elderly Quechua Indians of Peru,and their association with nutritional status

Socio-demographic, behavioral, functional and anthropometric data for groups of elderly Quechua Indians of Peru were used to investigate the effects of gender and lifestyle patterns on nutritional status. Two community-dwelling samples were selected for study, representative of divergent lifestyles in terms of their combination of socio-economic, demographic and cultural contexts, plus an ad-hoc sample of institutionalized individuals with controlled food intake and reduced physical activity. Results suggest that differences in socio-demographic, behavioral and functional characteristics exist between the sexes and across settings (low- vs. highland) and lifestyles (institutionalized vs. community-dwelling; semi-urban vs. rural). These factors are likely to be related to diverging dietary and physical activity patterns, and have considerable effects on the nutritional status of the respondents.     

Serum leptin levels in women with systemic lupus erythematosus

The purpose of this study was to evaluate serum leptin levels in systemic lupus erythematosus (SLE). Forty-one women with SLE were compared with 23 healthy women of similar age and body mass index (BMI). Clinical characteristics and Mexican systemic lupus erythematosus disease activity index (Mex-SLEDAI) score were assessed. Serum leptin levels (ng/dl) were measured by enzyme-linked immunosorbent assay (ELISA). Comparisons of leptin levels were made with the Mann-Whitney U-test. In a multiple regression analysis, those factors that could influence the leptin levels were adjusted. Patients with SLE had higher leptin levels than the control group (SLE median 31 vs control median 15, P=0.023). After adjusting by other variables, the serum leptin levels remained higher in SLE than in controls (P=0.02). Patients with SLE had no association between leptin levels and Mex-SLEDAI score, age, duration of disease, or prednisone doses. Those with SLE had higher leptin levels than controls. Further longitudinal studies are required to evaluate the role of this hormone in the exacerbations of SLE.     

Influenza vaccine in chronic lymphoproliferative disorders and multiple myeloma

OBJECTIVE: Vaccination against influenza in patients with chronic lymphoproliferative disorders (CLPD) and multiple myeloma (MM) is still a matter of clinical uncertainty. The aim of this study was to determine the safety, immunogenicity and clinical response to a commercially available vaccine against influenza in a group of such patients. METHODS: Thirty-four patients with CLPD and MM and 34 immunologically normal subjects were vaccinated with the same vaccine against influenza. Patients were observed during the epidemic season from October 1999 to April 2000, and monitored for side-effects of the vaccine, seroprotection and seroconversion after vaccination. The prevaccination level of immunoglobulins was also determined. Occurrence of influenza episodes was demonstrated with the positive isolation of a viral strain from a pharyngeal swab. RESULTS: No patient had untoward reactions to the vaccine used. Seroconversion and seroprotection were up to the standard established by the European Agency for the Evaluation of Medicinal Products. Only one patient developed influenza during follow-up. CONCLUSIONS: Influenza vaccine is effective and well tolerated in patients with CLPD and MM. No contraindications exist for its use, and it should become a routine practice, in order to prevent serious complications during the influenza epidemic season.     

Beta3 integrin deficiency promotes atherosclerosis and pulmonary inflammation in high-fat-fed,hyperlipidemic mice

Hyperlipidemia promotes the chronic inflammatory disease atherosclerosis through poorly understood mechanisms. Atherogenic lipoproteins activate platelets, but it is unknown whether platelets contribute to early inflammatory atherosclerotic lesions. To address the role of platelet aggregation in diet-induced vascular disease, we studied beta3 integrin-deficient mice (lacking platelet integrin alphaIIbbeta3 and the widely expressed nonplatelet integrin alphavbeta3) in two models of atherosclerosis, apolipoprotein E (apoE)-null and low-density lipoprotein receptor (LDLR)-null mice. Unexpectedly, a high-fat, Western-type (but not a low-fat) diet caused death in two-thirds of the beta3-/-apoE-/- and half of the beta3-/-LDLR-/- mice due to noninfectious pneumonitis. In animals from both models surviving high-fat feeding, pneumonitis was absent, but aortic atherosclerosis was 2- to 6-fold greater in beta3-/- compared with beta+/+ littermates. Expression of CD36, CD40L, and CD40 was increased in lungs of beta3-/-LDLR-/- mice. Each was also increased in smooth muscle cells cultured from beta3-deficient mice and suppressed by retroviral reconstitution of beta3. These data show that the platelet defect caused by alphaIIbbeta3 deficiency does not impair atherosclerotic lesion initiation. They also suggest that alphavbeta3 has a suppressive effect on inflammation, the loss of which induces atherogenic mediators that are amplified by diet-induced hyperlipidemia.     

PDGF-A, PDGF-B, TGFbeta, and bFGF mRNA levels in patients with essential thrombocythemia treated with anagrelide

Plasmatic levels of PDGF-AB, TGFbeta1, and bFGF are increased in patients with essential thrombocythemia (ET) while intraplatelet levels are low for PDGF, normal for TGFbeta, and elevated for bFGF. To evaluate the contribution of gene expression to the dysregulated cytokine levels, we studied platelet PDGF-A, PDGF-B, TGFbeta1, and bFGF mRNA in ET patients before and during anagrelide treatment. We found decreased PDGF-A and PDGF-B, increased TGFbeta1, and normal bFGF mRNA levels. During treatment, mRNA levels remained decreased for PDGF-A, were increased for PDGF-B and normal for TGFbeta1. In untreated patients, protein expression of PDGF paralleled its mRNA levels while different patterns of RNA and protein were found for TGFbeta1 and bFGF.     

Racial Disparities in End-of-Life Care Between Black and White Adults With Metastatic Cancer

ContextThe comfort of patients with cancer near the end of life (EOL) is often undermined by unnecessary and burdensome treatments. There is a need for more research examining racial disparities in EOL care, especially in regions with a history of racial discrimination.ObjectivesTo examine whether black adults received more burdensome EOL care than white adults in a population-based data set of cancer decedents in Louisiana, a state with a history of slavery and long-standing racial disparities.MethodsThis was a retrospective analysis of EOL care from the Research Action for Health Network (REACHnet), a regional Patient-Centered Outcomes Research Institute-funded database. The sample consisted of 875 white and 415 black patients with metastatic cancer who died in Louisiana from 2011 to 2017. We used logistic regression to examine whether race was associated with five indicators of burdensome care in the last 30 days of life: chemotherapy use, inpatient hospitalization, intensive care unit admission, emergency department (ED) admission, and mechanical ventilation.ResultsMost patients (85.0%) received at least one indicator of burdensome care: hospitalization (76.5%), intensive care unit admission (44.1%), chemotherapy (29.1%), mechanical ventilation (23.0%), and ED admission (18.3%). Odds ratios (ORs) indicated that black individuals were more likely than white individuals to be hospitalized (OR = 1.66; 95% CI = 1.21–2.28; P = 0.002) or admitted to the ED (OR = 1.57; 95% CI = 1.16–2.13; P = 0.004) during their last month of life.ConclusionFindings have implications for informing health care decision making near the EOL for patients, families, and clinicians, especially in regions with a history of racial discrimination and disparities.