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Biomedical subjects

M Reese

Publications and source records attributed to M Reese.

12 recordsLinked to original sources
PubMed2000

[Radiocarpal fracture dislocation].

Radiocarpal fracture dislocation is a very rare, often complex injury and the result of high energy trauma. We present a retrospective review of four patients. The injury in our series was characterized by a complete dorsal dislocation of the radiocarpal joint with fracture of the radial styloid, associated with avulsion of the palmar and dorsal cortical margin of the distal radius (radiotriquetral ligament included). One case presented a die punch fracture, another case a partial lesion of the scapholunate ligament. All injuries were immediately treated by closed reduction in local anaesthesia. All patients underwent operative treatment with a dorsal approach within seven days. The radial styloid was fixed with screws or Kirschner-wire, the impaction of the dorsoulnar aspect of the radius with elevation and fixation with a 2.7 mm plate. The tear of the scapholunate ligament was sutured and stabilized with Kirschner-wire between scaphoid and lunatum. All wrists were immobilized with a forearm cast for four weeks. The mean follow-up was 25 months. At the time of follow-up all patients showed a very good functional outcome, although the radiographic analysis revealed some osteoarthrotic changes.

Adult↗
PubMed2000

Use of a biodegradable chlorhexidine chip in the treatment of adult periodontitis: clinical and radiographic findings.

BACKGROUND: Previous multi-center trials demonstrated the efficacy of a biodegradable chlorhexidine-gelatin chip (CHX) in reducing probing depth in patients with periodontitis. The present study utilized a subset of subjects from the parent study to determine if the CHX chip was effective in maintaining alveolar bone over a 9-month period. METHODS: Forty-five subjects with at least four 5 to 8 mm pockets, stratified by smoking status, were enrolled in this double-blind controlled, placebo-controlled trial. Control groups received either placebo chip plus scaling and root planing (SRP) or SRP alone. Test group subjects received active CHX chip or SRP alone (to maintain the blind). Standardized radiographs were taken for quantitative digital subtraction radiography at baseline and 9 months. RESULTS: At 9 months, 15% of SRP treated subjects experienced loss of bone in 1 or more sites, no subject treated with active chip plus SRP lost bone (P <0.01). At 9 months, significant differences in the change in probing depth and clinical attachment levels favoring the active chip over SRP alone or SRP plus CHX chip were also observed (P <0.05). CONCLUSIONS: These data indicate that the CHX chip, when used as an adjunct to scaling and root planing, significantly reduces loss of alveolar bone.

Adult↗
PubMed1991

Cascade blue derivatives: water soluble, reactive, blue emission dyes evaluated as fluorescent labels and tracers.

Fluorescent dyes based on the pyrenyloxytrisulfonic acid (Cascade Blue) structure were prepared and evaluated. The dyes contain functional groups that react with amines, thiols, acids, aldehydes, and ketones, forming covalently bonded, fluorescent derivatives of molecules with broad biological interest. Reactive groups in the Cascade Blue dyes include carboxylic acids and activated esters, amines, hydrazides, alcohols, photoaffinity reagents, acrylamides, and haloacetamides. The dyes exhibited absorption maxima at 374-378 nm and 399-403 nm, with extinction coefficients in the range of 1.9 x 10(4)-2.4 x 10(4) M-1cm-1 and 2.3 x 10(4)-3.0 x 10(4) M-1cm-1, respectively. Emission maxima ranged from 422-430 nm. The spectral properties of the fluorescent dyes are sufficiently different from fluorescein to permit simultaneous use of both dyes with minimum spectral interference. The Cascade Blue derivatives have narrower spectral bandwidths and smaller Stokes' shifts than other reactive dyes with similar spectral properties, do not show appreciable sensitivity to pH, have higher solubilities in aqueous solution, and have good to excellent quantum yields. Cascade Blue conjugates of a number of histochemically and biologically useful molecules were prepared, including dextrans, albumins, Fc receptor binding proteins, antibodies, lectins, membrane receptor binding proteins, and biotin binding proteins, as well as biological particles and bacteria. Cascade Blue conjugates of secondary and tertiary labels yielded specific fluorescence localization in the indirect immunofluorescent staining of human epithelial cell (HEp-2) nuclei.

Cell Line↗
PubMed1986

AIDS in the workplace.

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Acquired Immunodeficiency Syndrome↗
PubMed1978

The new snake pits.

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Community Mental Health Services↗
PubMed1978

Living with dying.

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Attitude to Death↗
PubMed1978

A comparison of five methods for monitoring the precision of automated x-ray film processors.

Five different methods for preparing sensitometric strips used to monitor the precision of automated film processors are compared. A method for determining the sensitivity of each system to processor variations is presented; the observed statistical variability is multiplied by the system response to temperature or chemical changes. Pre-exposed sensitometric strips required the use of accurate densitometers and stringent control limits to be effective. X-ray exposed sensitometric strips demonstrated large variations in the x-ray output (2 omega approximately equal to 8.0%) over a period of one month. Some light sensitometers were capable of detecting +/- 1.0 degrees F (+/- 0.6 degrees C) variations in developer temperature in the processor and/or about 10.0 ml of chemical contamination in the processor. Nevertheless, even the light sensitometers were susceptible to problems, e.g. film emulsion selection, line voltage variations, and latent image fading. Advantages and disadvantages of the various sensitometric methods are discussed.

Automation↗
PubMedDate not supplied

Focus on communication: improving interaction between staff and residents who have severe or profound mental retardation.

The purpose of the present research project was to examine change in interactive behaviors between staff and residents of facilities that serve individuals with mental retardation. Twelve staff members were trained using an adapted component of the Nursing Child Assessment Satellite Training model, the Mental Retardation/Developmental Disabilities Adaptation of the Nursing Child Assessment Feeding Scale. Data indicated some slight increases in positive interactive staff behaviors with some small indications of generalization to another task and maintenance over a 6-month period in one setting. Little or inconsistent change was indicated in resident behaviors. Recommendations are made for further investigation of factors related to behavior change in staff and residents.

Adult↗