A Recurrent Mutation in an Extended Colombian Family and Variable Craniofacial Phenotypes.

Amelogenesis imperfecta (AI) is a collection of rare genetic disorders affecting the quantity and/or quality of the tooth enamel. AI can be classified into three major types according to the clinical phenotype: hypoplastic, hypocalcified, and hypomatured. Among them, the hypocalcified type shows the weakest physical properties, leaving rough and discolored enamel surfaces after tooth eruption.

Presence and count of S. mutans in children with dental caries: before, during and after a process of oral health education.

Dental caries is an infectious, multifactorial, localized, transmissible process that leads to the destruction of hard dental tissue. Streptococcus mutans is considered to be the main microorganism associated with its development. The aim of this study was to determine presence and count of S.

Expression and Presence of OPG and RANKL mRNA and Protein in Human Periodontal Ligament with Orthodontic Force.

Objective: The objective of this study is to investigate the expression and concentration of ligand receptor activator of NFkB (RANKL) and osteoprotegerin (OPG) in human periodontal ligament (hPDL) with orthodontic forces of different magnitudes.

Methods: Right premolars in 32 patients were loaded with 4oz or 7oz of orthodontic force for 7 days. Left first premolars were not loaded.

Occurrence of porphyromonas gingivalis and its antibacterial susceptibility to metronidazole and tetracycline in patients with chronic periodontitis.

Chronic periodontitis is a multifactorial infectious disease associated with Gram-negative strict anaerobes which are immersed in the subgingival biofilm. Porphyromonas gingivalis, an important periodontal pathogen, is frequently detected in patients with chronic periodontitis. Although isolates of P.

Genotyping, levels of expression and physical status of human papilloma virus in oropharyngeal squamous cell carcinoma among Colombian patients.

Introduction: One of the risk factors for squamous cell oropharyngeal carcinoma is infection with the human papilloma virus (HPV), with prevalences that vary depending on the geographical region. 

Objective: To identify the most frequent HPV viral types in oropharyngeal cancer, the levels of expression and the physical condition of the viral genome. 

Materials And Methods: Forty-six patients were included in the study from among those attending head and neck surgical services in the cities of Bogotá, Manizales and Bucaramanga.

Presence and antimicrobial profile of gram-negative facultative anaerobe rods in patients with chronic periodontitis and gingivitis.

Chronic periodontitis is a multifactorial infectious disease associated with Gram-negative anaerobes which are part of the subgingival microflora. In recent years, studies have been conducted to assess the presence of Gram-negative facultative anaerobes (Enterobacteriaceae) and their participation in the development and progression of chronic periodontitis. The aim of this study was to determine the presence of Enterobacteriaceae in patients with chronic periodontitis and gingivitis and to assess antimicrobial susceptibility of clinical isolates.

[Obtention, purification and characterization of IgY polyclonal antibodies, developed in hens, directed against Colombian isolates of Giardia duodenalis].

Introduction: The development of polyclonal antibodies requires laboratory animals, as the usually rabbits, which are bled for obtaining the immunoglobulins. Hens are an alternative to developing IgY polyclonal antibodies.

Objective: In the current study, hens were used to develop IgY anti-Giardia duodenalis antibodies and to evaluate five protocols for its purification.

[Prevalence of microsporidia and other intestinal parasites in patients with HIV infection, Bogota, 2001].

Opportunistic intestinal parasites are a common cause of diarrhea in HIV-infected patients. To determine the prevalence of microsporidia and other opportunistic parasites infecting HIV patients in Bogotá, Colombia, 115 patients were examined for these infections during the year 2001. The institution and the sample percent from each are as follows: Santa Clara Hospital, 33.