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Biomedical subjects

Y Shulman

Publications and source records attributed to Y Shulman.

12 recordsLinked to original sources
PubMed1986

Changes in the Activity of Catalase (EC 1.11.1.6) in Relation to the Dormancy of Grapevine (Vitis vinifera L.) Buds.

Catalase activity in grapevine (Vitis vinifera L.) buds cv. ;Perlette.' increased to a maximum in October and thereafter decreased within 3 months to less than half its maximal rate. The decrease in catalase activity coincided with the decline in temperature during winter. The rate of sprouting of buds forced at 23 degrees C was negatively related to the activity of catalase. Artificial chilling of grapevine canes at 5 degrees C resulted in a 25% decrease of catalase activity in the buds after 3 days and 31% after 17 days. The activity of catalase increased to the control level only 96 hours after removing canes from 5 degrees C to room temperature. Efficient buddormancy breaking agents, such as thiourea and cyanamide decreased catalase activity to 64 and 50% of the controls respectively, while the activity of peroxidase remained the same under those conditions. A less efficient dormancy breaking agent dinitro-ortho-cresol, did not decrease catalase activity.

Journal Article↗
PubMed1983

Anaplastic seminoma.

Fourteen patients with anaplastic seminoma were analyzed retrospectively. At the time of presentation anaplastic seminoma has similar prognosis stage for stage as the classic seminoma. However, the distinctive histologic findings and the high rates of local invasion and of elevations of serum beta-subunit human chorionic gonadotropin serve to distinguish anaplastic seminoma from the classic seminoma. These features, suggesting a possibly greater metastatic potential for anaplastic seminoma, warrant its continued identification as a distinct pathologic subtype.

Adult↗
PubMed1981

CAT scanning in staging of prostatic cancer.

Forty-six patients with histologically proved adenocarcinoma of the prostate underwent pelvic lymphadenectomy after CAT scanning. The accuracy, specificity, and sensitivity of the CAT scan in detecting nodal metastasis were 70, 93 and 30 per cent, respectively; this compares favorably with pedal lymphangiography. Seventeen of the patients had radical prostatectomy. The accuracy, specificity, and sensitivity of the CAT scan in depicting local extent of the tumor were 47, 100, and 18 per cent, respectively; although low, no other clinical or biochemical method provides a better result.

Adenocarcinoma↗
PubMed1981

Simple method for 60-degree Z-plasty.

The 60-degree two-flap Z-plasty is extremely useful and versatile. Its success depends upon accurate construction of the flaps. In the past, the intraoperative measurements required have been either quite involved or quite inaccurate. We present a simple but accurate method for planning the 60-degree two-flap Z-plasty.

Humans↗
PubMed1981

Treatment of mild breast asymmetry.

Three young woman had mild breast asymmetry that was corrected by a wedge partial subcutaneous mastectomy through a circumareolar incision. Results and patients satisfaction were excellent, with almost no scarring.

Breast↗
PubMed1976

Endogenous cytokinins in maturing manzanillo olive fruits.

Cytokinin activity was found in mature black olive fruits while in green fruits the activity was markedly lower. The substances with cytokinin activity showed chromatographic properties similar to those of nucleotides. Acid hydrolysis caused a shift of the active zone in the organic phase of 1-butanol-acetic acid-water (4:1:5) from R(F) 0.1 to R(F) 0.8. The possible relation of these endogenously appearing cytokinins to anthocyanin accumulation and aging of the fruit is discussed.

Journal Article↗