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Results for “Styrax”

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At least 19 recordsLinked to original sources
PubMed1992

Antimutagenicity of secondary metabolites from higher plants.

Higher plants contain both mutagens and antimutagens and are susceptible to mutagenesis but screening programs for detection of antimutagenesis rarely employ higher plant systems. Short-term bacterial and mammalian tissue culture systems are the norm. Using modified screening tests for detecting antimutagenic agents, higher plants have been shown to contain a variety of structurally novel antimutagenic agents. Systematic bioassay-directed methodology resulted in the isolation in pure form and biological and chemical characterization of the responsible individual active components from various plants. The methodology in use is illustrated by the isolation of cinnamic acid, cinnamyl cinnamate and cinnamyl ricinoleate as the active constituents of the classic medicinal plant product, Styrax asiatica. The methods which may be used to reveal structure-activity relationships and to explore putative molecular modes of action are illustrated with excerpts from the same study.

Antimutagenic Agents↗
PubMed1990

[The uterine motility in cattle during late pregnancy, labor and puerperium. II. Drug modification].

The uterine effects of oxytocin, the prostaglandins dinoprost and cloprostenol as well as clenbuterol, ergometrin, xylazine and Utrorale were investigated in 8 cows during late pregnancy, parturition and early puerperium (until 4th day p. p.). Uterine motility was measured by means of pressure microsensors and electrodes which were surgically implanted 3 to 4 weeks before parturition. Hysterograms were characterized by means of pressure amplitude, frequency and duration of uterine contractions and also by electromyography. Oxytocin (2-5 IE) given intravenously always provoked strong uterine contractions until the 4th day p.p. From the prostaglandins examined during early puerperium only dinoprost (15 mg i.v.) produced uterotonic effects, while the synthetic analogue cloprostenol (0.25 mg i.v.) had a weak stimulatory activity only on day 1 p.p. Both prostaglandins were ineffective when injected intramuscularly. Clenbuterol (0.3 mg i.v.) a beta 2-mimetic compound effectively induced long lasting tocolysis during parturition, which could be abolished by oxytocin. Xylazine (10 mg i.v.) was able to significantly increase uterine motility during late gestation. Following intravenous administration of ergometrin (1 and 10 mg), bunitrolol (1-16 mg) and Utrorale (0.1-4 ml) including its compounds oleum sabinae, oleum terebinthinae, balsamum copaivale and Styrax no uterokinetic activity was recorded at any time.

Animals↗
PubMedDate not supplied

The efficacy of adhesives in the application of wound dressings.

The use of adhesive preparations to reinforce surgical tapes and to secure dressings to the skin is standard practice. BioBrane is a biosynthetic membrane for use in dressing clean, well-debrided wounds, particularly partial-thickness burns and skin graft donor sites. The close and undisturbed contact of this material with the wound surface is important during the first 2 days after its application to achieve adherence. This has prompted a study to test the relative anchoring strength of four methods of securing the dressing to the normal skin around the wound: 1/2-inch (1.27-cm) Steri-Strips only; Mastisol, a mastic compound, with and without 1/2-inch Steri-Strips; and compound tincture of benzoin, USP, in combination with 1/2-inch Steri-Strips. The results obtained with a tension of 1.1 pounds/square inch (0.5 kg/6.5 cm2) were not conclusive as to the superiority of any one method. However, with a tension of 2.2 pounds/square inch (1 kg/6.5 cm2), the combination of mastic compound and 1/2-inch Steri-Strips provided the strongest adhesion. This type of application should also prove useful when other types of surgical dressings must be anchored in place.

Adhesives↗
PubMed1990

Circumcision--which dressing?

Three methods of circumcision dressing were compared in a prospective trial. The results showed that dressings containing tincture of benzoin adversely affected wound healing in children. Dressing the wound with greasy tulle gave better results; the addition of soframycin did not produce better results than those achieved with ordinary paraffin tulle.

Anti-Bacterial Agents↗
PubMed1986

Reinforcement of surgical adhesive strips.

Surgical adhesive strips are often used for closure of some wounds or to minimize tension on sutures after closures. The package insert of the type most commonly used (Steri-Strip), indicates that the application of compound tincture of benzoin, U.S.P. (CTB) increases strip adhesion. The increase in adhesive power by CTB was compared with a preparation containing gum mastic (Mastisol). The study clearly demonstrated that the latter preparation provided a markedly more adhesive strength than that obtained with CTB.

Adhesiveness↗
PubMed1992

The postoperative use of wound adhesives. Gum mastic versus benzoin, USP.

Our results, combined with the work of previous authors, show that gum mastic not only offers superior adhesive qualities compared with benzoin, USP but also has a lower incidence of postoperative contact dermatitis and subsequent skin discoloration. In light of the widespread use of surgical adhesives, this study is important in documenting the low incidence of complications and the advantages of gum mastic compared with benzoin, USP.

Adult↗
PubMed1990

[A light-cured acrylic adhesive for fixing resin retention devices to the wax pattern].

A light-cured acrylic adhesive for fixing resin retention devices to the wax pattern was prepared. The adhesive consisted of trimethylolpropane triacrylate, 2-ethylhexyl acrylate, benzoin methyl ether, p dimethylaminobenzaldehyde and p-methoxyphenol. The adhesive could be cured within 20 sec not only by an UV photo curing unit but by a visible-light source with a xenon lamp. The adhesive and retention beads burned out after about an hour in the electric furnace at 400 c. The metal specimens with retention devices were cast in Ag-Pd-Cu-Au alloy with the use of two types of retention beads adhesive. The light-cured adhesive was superior to the conventional one in handling and some other properties. This adhesive may be used to fabricate composite veneered prostheses with minimum errors in laboratory procedure.

Acrylates↗