Pudendal mapping of S1 rootlets in a functional posterior rhizotomy: when an S1 posterior root shows a high pudendal dorsal action potential-a technical note
CHILDS NERVOUS SYSTEM
Authors: Morota, Nobuhito
Abstract
Background The standard level for lesioning in a functional posterior rhizotomy (FPR) ranges from L2 to S1/S2. Lesioning of the S1 and S2 rootlets strongly correlates with a reduction in ankle spasticity. In the Japanese population, the S2 root often shows the highest dorsal root action potentials (DAPs) in the afferent fibers of the pudendal nerve and is not lesioned to preserve postoperative urinary function. Thus, cutting of the S1 root plays a key role in reducing ankle spasticity in FPR. However, on rare occasions, even an S1 root may show high DAP in the afferent fibers of the pudendal nerve. Purpose The present, brief, technical note aimed to describe how an S1 root with a relatively high DAP in the afferent fibers of the pudendal nerve may be handed. Methods In the procedure, the S1 root is divided into several rootlets, and each rootlet is tested for the pudendal mapping. A train of electrical stimuli is delivered to each rootlet in the standard FPR. If electromyography (EMG) findings after electrical stimulation are highly abnormal while the pudendal mapping demonstrates no or a relatively low DAPs, the rootlet is cut. In contrast, even if the rootlet shows highly abnormal EMG findings, it is preserved if mapping demonstrates a relatively high DAP. Conclusion The S1 pudendal mapping is combined with EMG findings to achieve satisfactory reduction in ankle spasticity while preserving urological function.
Actinomarinicola tropica gen. nov. sp. nov., a new marine actinobacterium of the family lamiaceae, isolated from South China Sea sediment environments
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
Authors: He, Yuan-Qiu; Chen, Rou-Wen; Li, Cun; Shi, Song-Biao; Cui, Lin-Qing; Long, Li-Juan; Tian, Xin-Peng
Abstract
A novel marine actinobacterium, strain SCSIO 58843(T), was isolated from the sediment sample collected from the South China Sea. Strain SCSIO 58843T was Gram-stain-positive, aerobic and rod shaped. The whole-cell hydrolysis of amino acids contained nn-DAP, alanine, glutamic acid, glycine and aspartic acid. The main menaquinone was MK-9(H-8). The major fatty acids were C-17: 1 omega 8c and C-17:0. The major phospholipids were diphosphatidylglycerol (DPG), phosphatidylinositol (PI), phospatidylcholine (PC) and phosphatidylinositolmannoside (PIM). The G+C content of the genomic DNA was 72.5 %. Phylogenetic analysis of the 16S rRNA gene sequences showed that strain SCSIO 58843(T) formed a new lineage in the family Iamiaceae and had the highest simi-larity of 93.8 % with Iamia majanohamensis DSM 19957(T). Strain SCSIO 58843(T) can be distinguished from these known genera in the family Iamiaceae by polyphasic data analyses, and represents a novel genus and novel species, for which Actinomarinicola tropica gen. nov., sp. nov is proposed with the type strain SCSIO 58843(T)(=KCTC 49408(T)=CGMCC 1.17503(T)).