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Biomedical subjects

Z L Song

Publications and source records attributed to Z L Song.

8 recordsLinked to original sources
PubMed1994

[Flow cytometry in diagnosis and treatment of bladder tumor].

The cellular DNA contents of 139 bladder irrigations from 52 cases of bladder tumors were determined by flow cytometry. The results were compared with those of pathological grading and exfoliative cytology. It is suggested that cytological results were less accurate than DNA contents. High aneuploid DNA contents in tumor cells were marked by low grade and deep penetration of the bladder tumor. Total cystectomy was needed for bladder tumor with high aneuploid DNA, and partial cystectomy and TURBT for that tumor showed high recurrence with instillation of BCG. The results showed that DNA content of tumor is correlated with the nuclear grade, especially in poorly differentiated neoplasms, but flow cytometry can not replace cystoscopy examination.

Adult↗
PubMed1989

[Effects of ciwujia (Acanthopanax senticosus Harms) on reperfusion-induced arrhythmia and action potential alterations in the isolated rat heart].

By means of Langendorff method and standard microelectrode techniques the effects of Ciwujia on reperfusion induced arrhythmias and action potential alterations were studied in isolated rat heart with transient coronary occlusion. Inclusion of Ciwujia extract (equivalent to 1.2 and 2.4 mg crude drug/ml) was found helpful in reducing reperfusion induced ventricular fibrillation and ventricular tachycardia. Associated with this reduction in rhythm disturbances was an increase in the total duration of normal sinus rhythm during the 3 min reperfusion period. With the administration of Ciwujia the number of cells with abnormal action potential configurations was significantly reduced. This confirms that Ciwujia can protect myocardium from electrophysiological abnormalities, and therefore reduces the incidence of malignant arrhythmias.

Action Potentials↗
PubMed1989

[Cholangiothoracic fistulae].

Eight cholangio-thoracic fistula patients were seen from 1981 to 1987 in our hospital. The clinical features of the cases were classified into four types, i.e. bronchobiliary fistula (BBF, 3 cases), bronchopleurobiliary fistula (BPBF, 2 cases), pleurobiliary fistula (PBF, 2 cases) and pericardiobiliary fistula (PCBF, 1 case). In addition to a history of cholangitis or cholelithiasis and continuous or intermittent secondary biliary tract infection, the principle manifestations of BBF included: acute, subacute or chronic biliary empyema; biliary pneumonia or biliary lung abscess; and biliptysis. The empyema perforating into trachea, bronchus, pericardium and large vessels in the thoracic cavity may result in serious consequences. Asphyxiation, pericardial tamponade and abrupt massive intrathoracic hemorrhage may also be fatal. It is often difficult to locate the fistula by bronchoscopy, however the bile found in the respiratory tract may suggest BBF. Surgical management of BBF and PCBF are discussed.

Adult↗
PubMed1987

Lysine-mediated tissue osmication in combination with a tannin-osmium conductive staining method for non-coated scanning electron microscopy of biological specimens.

Glutaraldehyde fixed rat kidney blocks showed no charging effect when treated with lysine and osmic acid and viewed in a scanning electron microscope using an acceleration voltage of 5-30 kV and a specimen current of 1 X 10(-10) A. The podocyte processes and endothelial micropores of the glomerulus were visible without metal coating. Glutaraldehyde fixed, tannin-osmium impregnated and lysine-osmium treated specimens also showed no charging effect in the scanning electron microscope, yielding instead much clearer scanning images which were comparable to those obtained from gold-coated specimens or from tannin-osmium-thiocarbohydrazide-osmium impregnated specimens (Murakami and Jones, 1980).

Animals↗