ABSTRACT
Advances in mechanism and application of the heating effect in breeding of microorganism are reviewed in this paper. Heat produces mutagenesis effect and screening effect. Heating mutagenesis effect is occurred through the substitution of G-C base pair induced by heat, and heating screening effect produces higher forward mutation rate induced by other mutagens.
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the short-term and long-term curative effect of microvascular decompression sensory root of trigeminal nerve combing (MVD + SRTNC) by post-sigmoid approach as well as the complications in these operations.</p><p><b>METHODS</b>The data from 138 idiopathic trigeminal neuralgia (TN) patients treated with MVD + STRNC that followed up 33 months to 58 months was analyzed.</p><p><b>RESULTS</b>Immediate relief from pain occurred in 136 patients (98.6%). On Kaplan-Meier analysis, cumulative proportion effectiveness at the end of 25 months decreased to 91.4%, and 85.8% from 49 months to 58 months. There were cases of 63.83% and 19.15% with slight and midrange hypoesthesia after surgery but majority recovered at the end of 3-58 months (P < 0.01). No serious hypoesthesia occurred. The complications including leakage of cerebrospinal fluid, herpes and headache caused by high intracranial pressure, were observed in 4 cases (2.90%), 36 cases (26.09%) and 3 cases (2.17%), respectively. Two cases (1.43%) died of cerebral hemorrhage.</p><p><b>CONCLUSIONS</b>The proposed surgical strategy of standard MVD plus sensory root of trigeminal nerve combing was a good strategy option for TN, but It was important for surgeons to think highly of the risks of the surgery.</p>