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RISS 인기검색어
- 검색키워드
- 저자 : Fu-Nan He (검색결과 2 건)
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- 기관 내 무료
- 유료
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Relationship of Facet Tropism with Degeneration and Stability of Functional Spinal Unit
공민호,Wubing He,Yu-Duan Tsai,Nan-Fu Chen,Gun Keorochana,Duc H. Do,Jeffrey C. Wang 연세대학교의과대학 2009 Yonsei medical journal Vol.50 No.5
Purpose: The authors investigated the effect of lumbar facet tropism (FT) on intervertebral disc degeneration (DD), facet joint degeneration (FJD), and segmental translational motion. Materials and Methods: Using kinetic MRI (KMRI), lumbar FT, which was defined as a difference in symmetry of more than 7O between the orientations of the facet joints, was investigated in 900 functional spinal units (300 subjects) in flexion, neutral, and extension postures. Each segment at L3-L4, L4-L5, and L5-S1 was assessed based on the extent of DD (grade I-V) and FJD (grade 1- 4). According to the presence of FT, they were classified into two groups; one with FT and one with facet symmetry. For each group, demographics, DD, FJD and translational segmental motion were compared. Results: The incidence of FT was 34.5% at L3-L4, 35.1% at L4-L5, and 35.2% at L5-S1. Age and gender did not show any significant relationship with FT. Additionally, no correlation was observed between DD and FT. FT, however, wasfound to be associated with a higher incidence of highly degenerated facet joints at L4-L5 when compared to patients without FT (p < 0.01). Finally, FT was not observed to have any effects upon translational segmental motion. Conclusion: No significant correlation was observed between lumbar FT and DD or translational segmental motion. However, FT was shown to be associated significantly with the presence of high grades of FJD at L4-L5. This suggests that at active sites of segmental motion, FT may predispose to the development of facet joint degeneration.
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Complete Mitochondrial Genome of a Tongue Worm Armillifer agkistrodontis
Jian Li,Fu-Nan He,Hong-Xiang Zheng,Rui-Xiang Zhang,Yi-Jing Ren,Wei Hu 대한기생충학열대의학회 2016 The Korean Journal of Parasitology Vol.54 No.6
Armillifer agkistrodontis (Ichthyostraca: Pantastomida) is a parasitic pathogen, only reported in China, which can cause a zoonotic disease, pentastomiasis. A complete mitochondrial (mt) genome was 16,521 bp comprising 13 protein-coding genes (PCGs), 22 tRNA genes, 2 rRNA genes, and 1 non-coding region (NCR). A phylogenetic tree drawn with the concatenated amino acid sequences of the 6 conserved PCGs (atp6, cox1-3, and nad2) showed that A. agkistrodontis and Armillifer armillatus constituted a clade Pentastomida which was a sister group of the Branchiura. The complete mt genome sequence of A. agkistrodontis provides important genetic markers for both phylogenetic and epidemiological studies of pentastomids.
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