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Biomedical subjects

B F Wang

Publications and source records attributed to B F Wang.

9 recordsLinked to original sources
PubMed2001

Optimal treatment for distal ureteral calculi: extracorporeal shockwave lithotripsy versus ureteroscopy.

BACKGROUND: The optimal treatment for distal ureteral calculi remains controversial. We present data from our institution to compare the efficacy of extracorporeal shockwave lithotripsy (SWL) and ureteroscopy with different lithotripsy modalities (URSL). METHODS: From January 1994 to September 1997, 954 distal ureteral calculi were treated at our institution using in situ SWL (Siemens Lithostar) in 524 patients and ureteroscopy (Wolf 8.0F instrument and Swiss Lithoclast) in 430 patients. Stone sizes and patient ages were similar in these two groups. RESULTS: In the SWL group, the 3-month stone-free rate was 87%, and the effectiveness quotient (EQ) was 68.7%. In the URSL group, there was a 96% stone-free rate with an EQ of 92.1%. The SWL treatment was more expensive than URSL. CONCLUSION: At our institution, ureteroscopy is more efficacious than SWL for the treatment of distal ureteral calculi. In selected patients who had stones >10 mm with evidence of impaction and severe colic pain, we strongly suggest that URSL is the best choice.

Adult↗
PubMed1996

A perfume odour-sensing system using an array of piezoelectric crystal sensors with plasticized PVC coatings.

Using PVC polymer as membrane matrix and di-n-octylphenyl phosphate (DOPP) as plasticizer, a piezoelectric crystal sensor (PCS) array with 12 adsorptive materials selected from 68 compounds by cluster analysis has been constructed as a perfume odour-sensing system. The frequency shift data obtained from the sensor array responding to four commercial perfume odours are first autoscaled and then treated by principal component analysis. The experimental results show that the plasticized PVC membrane PCS array provides improved performance of pattern recognition compared with the single adsorptive coating PCS array. The frequency shift response characteristics of these sensors have been investigated experimentally. The proposed sensor array has also been applied to the classification of commercial spirituous liquor, wine and soft drink samples, as well as aliphatic alcohol homologues and isomers.

Journal Article↗
PubMed1993

Electron microscopic and immunohistochemical findings in a case of olfactory neuroblastoma.

A case of olfactory neuroblastoma is reported. Light microscopic examination showed various arrangements of poorly differentiated tumour cells forming either uniform sheets or convoluted cords of multiple cell layers orientated toward a richly vascular stroma. Electron microscopic examination showed the presence of abundant cytoplasmic filaments and processes, and dense core endocrine vesicles ranging from 100-160 nm in diameter in both the perinuclear region and tumour cell processes. Immunohistochemical staining was positive in most of the tumour cells for neuron specific enolase, and in a few cells for S-100 protein, vimentin, and serotonin, but staining for desmin and keratin produced no reaction.

Humans↗
PubMed1992

[A clinical study of 50 cases of Legionnaires disease].

The clinical features and X-ray manifestations of 50 cases of legionnaires disease were analysed. 8 cases might be due to nosocomial infection through breathing in flying particles of the saliva or phlegm. According to the main clinical features, this disease could be divided into common pneumonia type; acute gastroenteritis type; encephalopathy type; shock type; acute renal insufficiency type. The differential diagnosis of legionnaires disease with mycoplasmal pneumonia, pneumococcal pneumonia and infiltrative pulmonary tuberculosis was also discussed. The first choice for treatment is erythromycin or erythromycin with rifampicin.

Adult↗
PubMed1992

[Generation and immunochemical characterization of an anti-egg monoclonal antibody specific to Schistosoma japonicum].

Monoclonal antibodies (McAbs) were generated from mice immunized with soluble egg antigen (SEA) of Schistosoma japonicum. Five of which were specific to SEA of S. japonicum. The isotype of these McAbs was IgG1. Immunoblotting showed that the approximate molecule weight of the antigens recognized by the McAbs were 22 kDa, 116 kDa and greater than 200 kDa respectively. At least 3 isomorphs of the 22 kDa antigen recognized by 1E1 were found at pI 4.6-6 with 2-D Western blot. Moreover, immunoprecipitation using 125I-labeled S. japonicum SEA demonstrated that only one band corresponding to 30 kDa was recognized by 1E1.

Animals↗