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Cho, Sunghee,Moon, Heegyum,Loh, Tiing Jen,Oh, Hyun Kyung,Kim, Hey-Ran,Shin, Myung-Geun,Liao, D. Joshua,Zhou, Jianhua,Zheng, Xuexiu,Shen, Haihong Hindawi Publishing Corporation 2014 The Scientific World Journal Vol.2014 No.-
<P>Spinal muscular atrophy (SMA) is a human genetic disease which occurs because of the deletion or mutation of SMN1 gene. SMN1 gene encodes the SMN protein which plays a key role in spliceosome assembly. Although human patients contain SMN2, a duplicate of SMN1, splicing of SMN2 produces predominantly exon 7 skipped isoform. In order to understand the functions of splice site sequences on exon 7 and 8, we analyzed the effects of conserved splice site sequences on exon 7 skipping of SMN2 and SMN1 pre-mRNA. We show here that conserved 5′ splice site sequence of exon 7 promoted splicing of nearby exons and subsequently reduced splicing of distant exons. However, to our surprise, conserved 3′ splice site sequence of exon 7 and 8 did not promote splicing of nearby exons. By contrast, the mutation inhibited splicing of nearby exons and subsequently promoted splicing of distant exons. Our study shows that 3′ splice sites of exon 7 and 8 contain enhancer for their splice site selection, in addition to providing cleavage sites.</P>
Effect of Continuous Epidural Block on the Duration of Intensive Care after Cardiac Surgery
Choon Soo Lee,Jung Uk Han,Tae Jung Kim,Chong Kweon Chung,Hyun Kyung Lim,Young Deog Cha,Hey Ran Shin Korean Society of Critical Care Medicine 2000 Acute and Critical Care Vol.15 No.1
BACKGROUND: Continuous epidural block after surgery has been able to get better postoperative analgesic effect than intermittent intravenous (IV) opioids and to decrease the duration of mechanical ventilatory support, endotracheal intubation and ICU stay. The purpose of this study is to observe these effects of continuous epidural block after cardiac surgery. METHODS: 30 patients, undergoing cardiac surgery, were divided into 2 groups. Postoperative analgesia were performed by intermittent IV meperidine 25 mg in group 1 and by continuous epidural block with 1% mepivacaine 100 ml and morphine 4 mg in group 2. Both groups were supplemented, at the patient's request, by IV meperidine 25 mg as needed. Quality of pain relief, total number of IV meperidine and duration of consciousness return, mechanical ventilatory support, endotracheal intubation, ICU stay were compared between 2 groups. RESULTS: Quality of pain relief and total number of IV meperidine were significantly lower in group 2 than group 1, each time interval. Duration of consciousness return, mechanical ventilatory support, endotracheal intubation, ICU stay and time interval between consciousness return & mechanical ventilatory support were significantly shorter in group 2 than group 1. CONCLUSIONS: Continuous epidural block, with 1% mepivacaine 100 ml and morphine 4 mg, for postoperative analgesia decreases the duration of intensive care compaered with intermittent IV meperidine 25 mg, after cardiac surgery.