PubMed Health⌕ Search

Biomedical subjects

C Kadow

Publications and source records attributed to C Kadow.

At least 19 recordsLinked to original sources
PubMed2003

Evidence for a strong surface-plasmon resonance on ErAs nanoparticles in GaAs.

Room-temperature attenuation measurements are made between lambda=0.8 and 10.0 microm on three GaAs epitaxial samples containing layers of ErAs nanoparticles. An asymmetric attenuation peak is observed around 2.5 microm that increases in strength with ErAs density, and is modeled well by a Maxwell-Garnett formulation and semiclassical transport theory. The nanoparticles are assigned a distribution function of oblate spheroids having a minimum volume corresponding to a 1.0-nm sphere. This is consistent with the self-organizing tendency of ErAs in GaAs, and explains the sharp attenuation peak as a spherical-particle surface-plasmon (i.e., Fröhlich) resonance.

Journal Article↗
PubMed2000

Domestication differentially affects cochlear nucleus subdivisions in the gerbil.

We analyzed the effects of domestication on the subdivisions of the cochlear nucleus in the gerbil (Meriones unguiculatus) by comparing their volumes and rostrocaudal extents in laboratory gerbils and in age-matched F1 offspring of gerbils caught in the wild. In addition, soma size was systematically analyzed in the anteroventral cochlear nucleus of both groups. Total cochlear nucleus volume and rostrocaudal extent were not significantly different between groups either for young (postnatal day 9) animals before the onset of hearing or for young 4-month-old animals. However, the dorsal cochlear nucleus was significantly larger and the anteroventral cochlear nucleus was significantly smaller in young adults of the wild strain. Thus the relative proportions of the cochlear nucleus subdivisions differed between the groups. In addition, soma size was significantly larger in the low-frequency portion of the anterovental cochlear nucleus in domesticated gerbils compared to wild gerbils. To our knowledge, this is the first reported instance of a well-defined brain structure (e.g., the antreovental cochlear nucleus) being larger in the domesticated than in the wild form.

Animals↗
PubMed1991

Granulomatous prostatitis: a clinicopathological study.

In a clinicopathological study of granulomatous prostatitis, we have found two distinct histological patterns. Approximately one third of cases consisted of localized, often elongated or stellate lesions, resembling rheumatoid nodules. Where clinical details were available, most of these cases had a history of previous transurethral resection. The remaining cases showed more diffuse involvement of the prostate, with lesions centred on ducts and glands, and were not associated with previous prostatic surgery or systemic illness. Immunohistochemical studies of the associated inflammatory infiltrate showed an apparently random distribution of T- and B-lymphocytes in the former group, while in the latter group there was a concentration of T-cells in and around damaged ducts and glands, suggesting a possible immune-mediated destruction of these structures.

Adult↗
PubMed1989

Primary liposarcoma of the omentum: a rare intra-abdominal tumour.

Two cases of primary omental liposarcoma are described, each presenting in a different manner, thus emphasising the spectrum of clinical features associated with this condition. Treatment guidelines are laid down based upon a review of the world literature. The role of radical surgical excision in the management of this often well-encapsulated but highly malignant tumour is emphasised.

Adult↗
PubMed1988

Prostatectomy or conservative management in the treatment of benign prostatic hypertrophy?

A randomised, prospective trial comparing transurethral prostatectomy with conservative management was carried out in 38 men with proven bladder outflow obstruction. Patients were assessed urodynamically before treatment and 6 months later. All 21 patients who had a prostatectomy showed a significant improvement in peak flow rate, voiding pressures and residual urine volume, but only 71% were symptomatically better. Of the 17 patients treated conservatively, 56% noted an improvement in their symptoms, although their peak flow rates and residual urine volume were virtually unchanged. Following prostatectomy, the incidence of detrusor instability fell by 78%, whereas in the conservatively treated group the reduction was only 50%. Patients who had done well or badly after treatment were analysed as separate subgroups. The single feature which distinguished between these two groups was the high incidence of reversion to bladder stability in those who had a good symptomatic response to treatment.

Aged↗
PubMed1987

Ectopic prostatic glands in bulbar urethra. Immunoperoxidase study.

Ectopic prostatic glands in the bulbar urethra of a sixty-year-old man were identified by an indirect immunoperoxidase stain for prostatic acid phosphatase. Cystoscopically the appearances were those of "urethritis" without the polypoid appearance previously reported in cases of ectopic prostatic tissue.

Acid Phosphatase↗
PubMed1986

A double-blind trial of the effect of beta-sitosteryl glucoside (WA184) in the treatment of benign prostatic hyperplasia.

Cholesterol-lowering agents are still used in some countries for the treatment of benign prostatic hyperplasia (BPH). A randomized, double-blind, placebo-controlled urodynamic study, carried out on 53 patients with proven outflow obstruction, has failed to prove that the drug, beta-sitosteryl beta-D-glucoside (WA184), is superior to placebo in the treatment of outflow obstruction due to BPH when administered at a dose of 0.3 mg/day. Possible reasons for this include an insufficient dose and duration of treatment (this drug is known to have a potent effect on cholesterol metabolism in the prostate) and the predominantly stromal pathological changes which characterize BPH and which may be unaffected by such agents.

Aged↗