Biomedical subjects
Publications and source records attributed to J A Dean.
Skin neoplasms involving the eyebrow are not an uncommon problem. Standard surgical resections that depend on elliptical excision and closure tend to either remove an excessive amount of brow or place scars in an unfavorable position. We present a simple technique that allows for maximal brow preservation, alignment of remaining brow, and a minimal amount of exposed scars.
Diphallia is a rare congenital condition that presents in many, varied ways. Associated anomalies are to be expected. These anomalies should be sought out and treated as early in the patient's life as possible because they are the principal cause of mortality in these individuals. Half the patients reviewed by Ravitch in 1953 with duplication of the colon and genital tracts died of intestinal complications. Definitive genital repair should be done at an age where the anatomy is of large enough caliber for eased surgical manipulation, but prior to the age of recall. From our experience with hypospadias repair, the optimal age seems to be 12 months of age. Each case must be treated individually in order to achieve the best functional and aesthetic result.
The collection of data is a lengthy and time-consuming process, but is not an end in itself. For the data to be useful, it is necessary for an appropriate analysis to be made and its results applied. This article describes a computer program for the analysis of epidemiological studies.
1. Changes in the activity pattern of leech Retzius (R) cells were investigated using intracellular recording. 2. The presence of an after-hyperpolarisation (AHP) is closely related to activity pattern; regular firing being associated with an AHP, bursting with its absence. 3. Increasing external calcium (Cao), cyclic AMP levels or activity of kinase A enhanced the AHP. 4. Bursting was induced by low Cao, EGTA, barium, cobalt or injection of phorbol ester. 5. Reduction of Cao to zero caused long paroxysmal depolarising shifts of potential which could be reversed to bursting by cobalt, IBMX or injection of kinase A catalytic subunit. 6. The possible roles of a calcium-activated potassium channel and protein phosphorylation in regulating the activity of the cell are discussed.
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Octopamine (OA) hyperpolarizes leech Leydig neurones but response amplitudes and thresholds vary. Associations between response, OA dose and other variables [initial resting potential, action potential (AP) frequency and amplitude, temperature, microelectrode resistance, position of ganglion along nerve cord, animal, treatment order] were examined using canonical correlation. A complex response was expressed by summing changes in membrane potential and AP frequency over 2 min of OA treatment. Only dose and ganglion position influenced this response. One significant canonical variate related dose to immediate changes in membrane potential and summed changes in AP frequency throughout the OA effect. Response to OA was greater in cells in posterior ganglia.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Trauma to the male phallus may be treated in a systematic approach to achieve aesthetically and functionally pleasing results. Isolated burns should be treated early with excision and preputial flap or skin graft closure. Avulsion injuries are closed primarily or skin grafted. Subtotal loss can be treated with penile lengthening techniques. Total loss is treated with reimplantation or microvascular free tissue transfer phalloplasty. There are reconstructive surgical options, instead of penectomy, in patients with penile malignancies.
Epi Info is a general-purpose set of computer programs for word processing, database management, statistics, and graphics developed over the past five years at the Centers for Disease Control and the World Health Organization. The programs allow rapid questionnaire construction, data entry, and analysis during epidemic investigation. Both data entry and analysis can be programmed to provide customization and automatic operation for more permanent systems, such as those for disease or injury surveillance. Epi Info is in the public domain and copies may be freely distributed. It requires an IBM-compatible micro-computer with at least 512 kilobytes of memory. Translations into French and Spanish are in progress; a translation kit is available to facilitate translation into other languages.
The purpose of this project was to survey Indiana dentists concerning dental care for Indiana infants and toddlers. Dental care issues covered were the age for a child's first dental visit, frequency of rampant or nursing caries cases examined, and dental referral sources for infants and toddlers. The survey also helped determine the dentist's perception of parents' attitudes toward services recommended by the dentist. A twelve question survey was mailed to 2006 general and pediatric dentists in the State of Indiana. The results of the survey were: 1. A large percentage of Indiana dental practitioners do not recommend the first dental visit or examine children for their dental visit until the child is more than one year of age. 2. A majority of Indiana dental practitioners see children with nursing caries or rampant caries on a monthly basis. 3. The majority of Indiana dental practitioners refer children with nursing caries to pediatric dentists for treatment. 4. Although the full treatment plan may undergo some modification based on various parental concerns, a majority of practitioners do not experience difficulty in obtaining treatment plan acceptance for nursing or rampant caries cases.
Oculodentodigital dysplasia is a rare autosomal dominant syndrome characterized by typical facies and certain anomalies of the eyes, dentition and digits. This report describes the case of a 2.5-year-old white male with oculodentodigital dysplasia and his comprehensive dental treatment. Aggressive treatment to maintain the integrity of the patient's primary dentition was provided. The characteristic physical and genetic findings of oculodentodigital dysplasia were also described.