Manuel Rincon

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The mandibular gland secretion of Melipona beecheii contains a rich mixture of terpenoid and oxygenated compounds and unsaturated and saturated hydrocarbons. However, it differs markedly from the 11 other Brazilian species examined in previous studies, both by the absence of 2-heptanol and the presence of rose oxides. The most abundant compound was geranyl(More)
UNLABELLED INTRODUCTION AND OBJECTIVES. Clinical practice in unstable angina is not always based on best evidence. Guidelines have the potential to improve quality of health care. There are no randomised trials assessing implementation strategies in the public healthcare system of Spain yet. OBJECTIVE to compare the effectiveness of a multifaceted(More)
Few studies have evaluated the relationship between drugs of abuse consumption and plasma levels of vitamin C. Because of the importance of vitamin C due to its role in prevention of acute and chronic diseases, this study was carried out with the purpose of testing the influence of consumption of drugs of abuse on the plasmatic levels of vitamin C (ascorbic(More)
The Information and Communications Technologies (ICT) offer developing countries the chance to leapfrog into the knowledge-based economy. However, the pressure of catching up with the ICT fast track is confusing the decision making in the Arab countries and fuzzifying the sorting of priorities that are crucial for the suitable deployment of ICT in meeting(More)
BACKGROUND AND OBJECTIVES In Venezuela, family medicine is taught and practiced almost exclusively in ambulatory care settings. This article describes the evolution of the educational strategies that emphasize family and community aspects of clinical practice within one residency program in the country of Venezuela. METHODS Three distinct phases of(More)
OBJECTIVES To review the scientific evidence on the risk and prevention of venous thromboembolic disease (VTD) associated with specific clinical factors in women. STUDY DESIGN Qualitative systematic review. DATA SOURCE MEDLINE, Cochrane library, clinical practice guidelines, and referenced articles from these sources. RESULTS Gender is not an(More)
The in vitro activities of mupirocin, quinupristin/dalfopristin, linezolid, eperezolid, sitafloxacin, clinafloxacin, moxifloxacin, amoxycillin, metronidazole and clarithromycin were tested at pH 7.4 against 57 strains of Helicobacter pylori. The most active agents (mupirocin, sitafloxacin and clinafloxacin) were also tested for activity at pH 5.4 against(More)
Biopsy specimens of gastric and duodenal mucosa from 326 patients were examined bacteriologically and histologically to determine the correlation between chronic gastritis and H. pylori colonization. H. pylori was identified in 111 (66.5%) patients with evidence of chronic gastritis and in 97 (82.2%) individuals who had gastritis associated with other(More)
In the present study the prognostic value of both DNA ploidy and the proliferative activity of tumour cells were studied in a series of 76 consecutive patients suffering from gastric tumours. DNA ploidy and the proliferative index (as measured by the percentage of S-phase cells) were determined by flow cytometry using fresh tumour specimens. The presence of(More)