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Biomedical subjects

M J Aldred

Publications and source records attributed to M J Aldred.

At least 55 records · Page 3Linked to original sources
PubMed1990

A pigmented adenomatoid odontogenic tumor.

Occasional reports have described the presence of melanin in various odontogenic lesions. A case of melanin pigmentation in an adenomatoid odontogenic tumor is described.

Adolescent↗
PubMed1990

Comparison of identification methods for oral asaccharolytic Eubacterium species.

Thirty one strains of oral, asaccharolytic Eubacterium spp. and the type strains of E. brachy, E. nodatum and E. timidum were subjected to three identification techniques--protein-profile analysis, determination of metabolic end-products, and the API ATB32A identification kit. Five clusters were obtained from numerical analysis of protein profiles and excellent correlations were seen with the other two methods. Protein profiles alone allowed unequivocal identification.

Bacterial Proteins↗
PubMed1990

Protein profiles of Capnocytophaga species.

Ninety-seven strains of Capnocytophaga isolated from the oral cavity and the type strains of C. ochracea, C. sputigena and C. gingivalis were compared by one-dimensional SDS-PAGE of whole cell proteins. The protein patterns were highly reproducible and were used as the basis for numerical taxonomic analysis. The clusters containing the type strains of C. ochracea and C. sputigena segregated at the 78% similarity level. Some of the eight clusters obtained at this level showed good correlation with grouping based on the results of biochemical testing for lactose and galactose fermentation and nitrate reduction. No consistent association was found between protein profiles and colony type, size or colour or cell length but all agar-adherent colony types segregated into a single cluster.

Bacterial Proteins↗
PubMed1990

A rapid, semi-automated SDS-PAGE identification system for oral anaerobic bacteria.

SDS-polyacrylamide gel electrophoresis is a useful technique in bacterial differentiation and identification. A rapid, semi-automated SDS-PAGE system (Phast System) was assessed for identification of formate-fumarate-requiring, asaccharolytic, Gram-negative oral anaerobes. The system permitted loading, separation and staining of gels within 2 h. Percentage similarities between strains were determined using correlation coefficients and cluster analysis. The protein profiles were sufficiently reproducible provided that distorted profiles were disregarded. Strains were successfully separated into their species, with the exception of Bacteroides ureolyticus NCTC 10939, which appeared to be distinct from other strains of that species. Twenty-nine unidentified formate-fumarate-requiring, sub-gingival plaque strains were suitably clustered with the standard strains as verified by a series of physiological and biochemical tests.

Bacterial Proteins↗
PubMed1990

Amelogenesis imperfecta with taurodontism and the tricho-dento-osseous syndrome: separate conditions or a spectrum of disease?

Various authors have allocated a diagnosis of tricho-dento-osseous syndrome to cases originally reported as amelogenesis imperfecta (hypomaturation-hypoplasia type) with taurodontism. The resulting confusion has prompted this critical review of the literature, and further information has been obtained from the authors concerned. Criteria for diagnosis of the two conditions are proposed.

Abnormalities, Multiple↗
PubMed1990

Colour teaching aids in oral pathology.

A simple and cost effective photographic method is described for presenting case materials to assist in the practical teaching of Oral Medicine and Pathology to undergraduate dental students. The information contained in each presentation is comprised of clinical radiographic and histopathological material.

Audiovisual Aids↗
PubMed1989

Rapp-Hodgkin syndrome: an ectodermal dysplasia involving the teeth, hair, nails, and palate. Report of a case and review of the literature.

Rapp-Hodgkin syndrome is a rare form of ectodermal dysplasia involving the hair, eyes, sweat glands, nails, teeth, and palate. The case of a white girl with the condition is presented. The differential diagnosis is discussed, and the eight previously reported cases are reviewed. Another (ninth) previously reported case is considered for inclusion in the group.

Child, Preschool↗
PubMed1989

Non-osteogenic fibroma of the mandibular condyle.

Non-osteogenic fibroma is a lesion most commonly seen within the metaphyseal region of the tibia or femur presenting during the second decade. Few cases have been reported in the jaws and all occurred in the mandible. This report documents an 18-year-old female with a non-osteogenic fibroma in the condyle.

Adolescent↗
PubMed1989

Frequency and density of yeasts in the mouths of malnourished children.

The prevalence and density of yeasts and Candida albicans on the buccal mucosa and dorsum of the tongue have been assessed in 106 children in Crossroads squatter camp, South Africa. They were divided into a malnourished and a control group on the basis of an age/weight chart. No differences were found in yeast prevalence and density in the two groups. However, malnourished children more frequently had a mucosal density of yeasts, and particularly C. albicans, exceeding the upper limit normally found in health, in the absence of clinical infection. Some evidence was found to suggest that yeast density might be influenced by sex as well as nutritional status.

Candida albicans↗
PubMed1989

Regional odontodysplasia: a bibliography.

Regional odontodysplasia is a localized disorder of tissues of dental origin resulting in characteristically bizarre clinical and radiographic appearances. It most commonly affects the maxillary anterior teeth of both the permanent and primary dentitions. The authors present a worldwide bibliography of reported cases and discuss the suggested theories regarding the condition's etiology. Although the majority of cases of regional odontodysplasia must be regarded as idiopathic, various developmental anomalies may produce identical changes in the teeth in one or more quadrants. A number of previously reported cases are also reconsidered with regard to their diagnosis and guidelines are suggested for the treatment of patients affected by regional odontodysplasia.

Diagnosis, Differential↗
PubMed1989

Salivary and serum antibodies to gliadin in the diagnosis of celiac disease.

Salivary IgA and serum IgA and IgG antibodies to crude gliadin and alpha-gliadin were measured in adult patients with untreated celiac disease, ulcerative colitis, Crohn's disease and normal controls. Antibody levels in saliva and serum in untreated celiac disease were significantly higher than in other groups. Alpha-gliadin antibodies appeared to be a better discriminator for serum but not for saliva. The assay of salivary IgA antibodies to gliadin offers a non-invasive test which would be particularly useful in the investigation of celiac disease and for monitoring compliance with a gluten-free diet.

Adult↗
PubMed1988

Variable expression in Amelogenesis imperfecta with taurodontism.

The hypomaturation-hypoplasia type of Amelogenesis imperfecta with taurodontism is a rare condition. All previously documented cases have featured clinically involved teeth in successive generations. A family is presented in which the son was affected clinically and radiographically, whereas the teeth of his sister and mother were clinically normal but radiographically had the taurodont morphology. Molars extracted from the boy showed both hypoplasia and hypomineralisation on histopathological examination. It is proposed that the taurodont tooth form in the sister and mother represents a partial manifestation of the condition.

Adolescent↗