Diversity of culturable bacteria of freshwater environments from an altitudinal gradient in the eastern Cordillera of Colombia.

Bacteria are an essential biotic component in freshwater environments. A group of 262 bacterial strains of freshwater environments from an altitudinal gradient in the Eastern Cordillera of Colombia was identified using the 16S rRNA gene sequence analysis. Hill numbers and related diversity indices were calculated to know the bacteria diversity in this collection and environments.

PIMA: A population informative multiplex for the Americas.

We describe an ancestry-informative autosomal SNP multiplex designed to be a small-scale, flexible panel that can complement uniparental markers in assessing the American variability (i.e. pre-Colombian) found in contemporary indigenous American populations.

Scleral fixation of a dexamethasone intravitreal implant in a case of subluxated bag-intraocular lens complex.

Macular edema is a condition of retinal tissue treated with anti-inflammatory agents including placement of an intravitreal sustained-release dexamethasone device, designed to deliver a controlled amount of the medication for a prolonged time, representing an excellent therapy. Nonetheless, the implantation cannot be carried out without an anatomical barrier, such as the presence of posterior capsular support, lens, or intraocular lens. The absence of these barriers could lead to several complications, due to migration of the device from the vitreous cavity to the anterior chamber, causing corneal endothelial damage, corneal edema, glaucoma, and uveitis, among others.

Epidemiology, risk factors and genotypes of HBV in HIV-infected patients in the northeast region of Colombia: high prevalence of occult hepatitis B and F3 subgenotype dominance.

Introduction: Chronic hepatitis B virus (HBV) infection is an increasing cause of morbidity and mortality in human immunodeficiency virus (HIV)-infected individuals. HIV-positive patients are commonly co-infected with HBV due to shared routes of transmission.

Objectives: Our aim was to determine the risk factors, prevalence, genotypes, and mutations of the Surface S gene of HBV, and occult hepatitis B infection (OBI) among patients infected with HIV in a northeastern Colombian city.

First case report of turcot syndrome type 1 in Colombia.

Turcot syndrome is an autosomal recessive disorder clinically characterized by the occurrence of primary tumors of the central nervous system and adenomatous colonic polyps during the first or second decades of life, with a spectrum of clinical features such as "café-au-lait" spots, axillary freckling, and hyperpigmented spots. Currently its prevalence globally and in Colombia remains unknown. We present the case of a 20-year-old male with a clinical presentation of both glioblastoma multiforme and multiple adenomatous colonic polyps.