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Growing rod

Y Hai, A X Pan, Y G Li, L Zang, S Yuan
Objective: To analyse the biomechanical effects on adjacent segments of different growing-rod (GR) fixation in early onset scoliosis through a finite element analysis method. Methods: A severe early-onset scoliosis patient was selected and the pre-operation and post-GR-operation (Upper instrumented levels: T(4), T(5). Lower instrumented levels: L(3), L(4)) whole spine 3-dimentional CT scan data were collected to build the finite models. Based on the different models, biomechanical differences on adjacent segments were analysed...
December 26, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
Sarah E Gilday, Mark S Schwartz, Donita I Bylski-Austrow, David L Glos, Lindsay Schultz, Sara O'Hara, Viral V Jain, Peter F Sturm
BACKGROUND: Magnetically controlled growing rods (MCGRs) are increasingly used in the treatment of early onset scoliosis (EOS). Few studies have reported whether desired lengthening can reliably be achieved, or if prior spine instrumentation and large tissue depths affect lengthening. In this clinical study of EOS patients, it was hypothesized that increases in rod length would equal programmed increases, patients with prior spine instrumentation would lengthen less than patients without prior surgery, and larger tissue depths would decrease lengthening success...
January 9, 2018: Journal of Pediatric Orthopedics
John Heflin, Michelle Welborn, Norman Ramirez-Lluch, Ivan Iriarte, Ron El-Hawary, Graham T Fedorak, John T Smith
STUDY DESIGN: Retrospective case control OBJECTIVE.: To report on differences in implant failure rates and complications requiring reoperation in children with early-onset scoliosis (EOS) treated with rib-based distraction utilizing four proximal fixation points in either a parallel or in-line configuration. SUMMARY OF BACKGROUND DATA: Proximal anchor failure continues to be a significant problem in growth-friendly surgery using rib-based distraction to treat children with EOS...
January 8, 2018: Spine
Huan-Jun Lu, Xiang-Bing Zeng, Goran Ungar, Christian Dressel, Carsten Tschierske
The so-called Smectic-Q phase (SmQ) liquid crystal phase has been discovered in 1983 in rod-like molecules, but its structure remain unclear in spite of numer-ous attempts to solve it. Here we report what we believe to be the solution: a unique bicontinuous phase that is non-cubic and is made up of orthogonal twist-ed columns with planar 4-way junctions. While previously SmQ had only been seen in chiral compounds, here we show that this chiral phase forms also in achiral materials through spontaneous symmetry breaking...
January 4, 2018: Angewandte Chemie
Dhiraj Kumar Chaudhary, Jaisoo Kim
A cream-coloured, Gram-stain-negative, non-motile and rod-shaped bacterium, designated strain Brt-FT, was isolated from oil-contaminated soil. Strain Brt-FT was able to grow from 15 to 45 °C, pH 6.5-10.5 and 0-4.5 % (w/v) NaCl concentration. This strain was taxonomically characterized by a polyphasic approach. Based on 16S rRNA gene sequence analysis, strain Brt-FT represented a member of the genus Sphingobacterium and shared highest sequence similarity with Sphingobacterium chuzhouense DH-5T (99.4 %); Sphingobacterium gobiense H7T (95...
January 5, 2018: International Journal of Systematic and Evolutionary Microbiology
Jae-Bong Lee, Sumin Hong, Seung-Yeol Lee, Su-Jin Park, Kyeung Il Park, Seok-Gwan Choi, Myung Kyum Kim, Leonid N Ten, Hee-Young Jung
The taxonomic position of bacterial strain, designated 15J16-1T3AT, recovered from a soil sample was established using a polyphasic approach. Phylogenic analysis based on the 16S rRNA gene sequence showed that strain 15J16-1T3AT belonged to the family Cytophagaceae, phylum Bacteroidetes, and was most closely related to 'Larkinella harenae' 15J9-9 (95.9% similarity), Larkinella ripae 15J11-11T (95.6%), Larkinella bovis M2TB15T (94.7%), Larkinella arboricola Z0532T (93.9%), and Larkinella insperata LMG 22510T (93...
January 2018: Journal of Microbiology / the Microbiological Society of Korea
Muhammad Zubair Siddiqi, Gyu-Min Choi, Wan-Taek Im
A Gram-reaction-negative, catalase- and oxidase-positive, aerobic, transparent, motile and rod-shaped bacterium that was capable of fixing dinitrogen (designated strain A.slu09T), isolated from activated sludge, was characterized by a polyphasic approach to clarify its taxonomic position. Strain A.slu09T was observed to grow optimally at 30 °C and at pH 7.0 on R2A agar medium. Strain A.slu09T showed β-glucosidase activity, converting the major ginsenoside Rd to ginsenoside F2. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain A...
January 3, 2018: International Journal of Systematic and Evolutionary Microbiology
Amanda Yunn Ee Ng, Annabel Qi En Ng, Dan Zhang
Spatial control of exocytosis underlies polarized cell morphogenesis. In rod-shaped fission yeast, exocytic vesicles are conveyed along the actin cytoskeleton by myosin V motors toward growing cell ends [1, 2], the major sites for exocytosis. However, actomyosin-based vesicle delivery is dispensable for polarized secretion and cylindrical cell shape of fission yeast [3]. Thus, additional mechanisms should function in the spatial confinement of exocytosis. Here we report a novel role of endoplasmic reticulum (ER)-plasma membrane (PM) contacts in restricting exocytic sites for polarized fission yeast morphogenesis...
January 8, 2018: Current Biology: CB
Caglar Yilgor, Ayaz Efendiyev, Filiz Akbiyik, Gokhan Demirkiran, Alpaslan Senkoylu, Ahmet Alanay, Muharrem Yazici
BACKGROUND: Metal ions released from spinal instruments can cause localized debris and distribute systemically to settle on distant organs. Children with early-onset deformities live with metallic implants for a substantial amount of time. No research focused on metal distribution in growth-friendly instrumentations. The aim of this study was to compare age-matched growing rod (GR) and magnetically controlled growing rod (MCGR) groups to noninstrumented controls. METHODS: The study was designed as a multicenter, prospective, cross-sectional case series...
January 2018: Spine Deformity
Liam R Harris, Lindsay M Andras, Paul D Sponseller, Charles E Johnston, John B Emans, David L Skaggs
STUDY DESIGN: Multicenter retrospective cohort. OBJECTIVE: To compare improvement in nutritional status seen in early-onset scoliosis (EOS) patients following treatment with various growth-friendly techniques, especially in underweight patients (<20th weight percentile). BACKGROUND: Thoracic insufficiency resulting from EOS can lead to severe cardiopulmonary disease. In this age group, pulmonary function tests are often difficult or impossible to perform...
January 2018: Spine Deformity
Shaik Kamal Sha, B Vengal Rao, M Sirisha Rao, K V Halini Kumari, Sudarshan Kumar Chinna, Divya Sahu
Personal identification methods may not be efficient when bodies are decomposed, burned, in cases of mass disasters when soft tissue cannot provide reliable information or has been lost. Various methods currently employed in forensic odontology for personal identification include comparing with antemortem dental charts, rugoscopy, denture labeling, DNA analysis from dental pulp, bite mark analysis, etc., Recently, there is growing interest in the study of enamel rod end patterns. These enamel rod end patterns are termed as "Tooth prints" and the study of these prints is known as "Ameloglyphics" (amelo: Enamel, Glyphics: Carvings)...
November 2017: Journal of Pharmacy & Bioallied Sciences
Mid Eum Lee, Scott F Rusin, Nicole Jenkins, Arminja N Kettenbach, James B Moseley
Connections between the protein kinases that function within complex cell polarity networks are poorly understood. Rod-shaped fission yeast cells grow in a highly polarized manner, and genetic screens have identified many protein kinases, including the CaMKK-like Ssp1 and the MARK/PAR-1 family kinase Kin1, that are required for polarized growth and cell shape, but their functional mechanisms and connections have been unknown [1-5]. We found that Ssp1 promotes cell polarity by phosphorylating the activation loop of Kin1...
December 7, 2017: Current Biology: CB
Hiroki Dan, Naoya Ikeda, Masaya Fujikami, Atsushi Nakabachi
The Asian citrus psyllid Diaphorina citri Kuwayama (Hemiptera: Liviidae) is a serious pest worldwide, transmitting Candidatus Liberibacter spp. (Alphaproteobacteria), the causative agents of a devastating citrus disease known as huanglongbing or greening disease. In a symbiotic organ called the bacteriome, D. citri possesses an organelle-like defensive symbiont, Candidatus Profftella armatura (Betaproteobacteria), and a nutritional symbiont, Ca. Carsonella ruddii (Gammaproteobacteria). Drastically reduced symbiont genomes and metabolic complementarity among the symbionts and D...
2017: PloS One
Nenghu Qiao, Lijun Xi, Jingjing Zhang, Dejian Liu, Baosheng Ge, Jianguo Liu
A bacterial strain, K11T, capable of degrading phenol derivatives was isolated from activated sludge of a sewage treatment plant in China. This strain, which can degrade more than ten phenol derivatives, was identified as a Gram-stain negative, rod-shaped, asporogenous, facultative anaerobic bacterium with a polar flagellum. The strain was found to grow in tryptic soy broth in the presence of 0-2.5% (w/v) NaCl (optimum 0-1%), at 4-43 °C (optimum 30-35 °C) and pH 4.5-10.5 (optimum 7.5-8). Comparative analysis of nearly full-length 16S rRNA gene sequences showed that this strain belongs to the genus Thauera...
December 13, 2017: Antonie Van Leeuwenhoek
Ram Hari Dahal, Jaisoo Kim
Two isolates of bacterial strains A15T and A17 were isolated from stream bank soil in Kyonggi University. Cells were aerobic, Gram-stain-negative, oxidase- and catalase-positive, motile, non-spore-forming, rod-shaped, opaque, and cream coloured. Both strains hydrolysed CM-cellulose. Strains were able to grow at 20-42 °C, pH 5.5-10.0 and at 1.5 % NaCl concentration (w/v). Indole test was positive. Analyses of phylogenetic trees based on its 16S rRNA gene sequences indicated that strain A15T formed a lineage within the family Rhodospirillaceae of the phylum Proteobacteria which was distinct from Ferrovibrio denitrificans S3T (98...
December 8, 2017: International Journal of Systematic and Evolutionary Microbiology
Joseph Okiria, Leonid N Ten, Su-Jin Park, Seung-Yeol Lee, Dong Hoon Lee, In-Kyu Kang, Dae Sung Lee, Hee-Young Jung
A Gram-stain-negative, non-motile, non-spore-forming, rod-shaped, aerobic bacterium, designated 15J9-8T, was isolated from soil on Jeju Island, Republic of Korea. The isolate was able to grow between 10 and 30°C, pH 6.5-8.5, and in presence of 0-1% (w/v) NaCl. The results of comparative 16S rRNA gene sequence analysis indicated that strain 15J9-8T represented a member of the family Cytophagaceae, phylum Bacteroidetes, and was most closely related to Spirosoma aerophilum 5516J-17T (96.1% similarity), Spirosoma pulveris JSH5-14T (95...
December 2017: Journal of Microbiology / the Microbiological Society of Korea
Alvaro S Villalobos, Jutta Wiese, Pablo Aguilar, Cristina Dorador, Johannes F Imhoff
A novel actinobacterium, strain DB165T, was isolated from cold waters of Llullaillaco Volcano Lake (6170 m asl) in Chile. Phylogenetic analysis based on 16S rRNA gene sequences identified strain DB165T as belonging to the genus Subtercola in the family Microbacteriaceae, sharing 97.4% of sequence similarity with Subtercola frigoramans DSM 13057T, 96.7% with Subtercola lobariae DSM 103962T, and 96.1% with Subtercola boreus DSM 13056T. The cells were observed to be Gram-positive, form rods with irregular morphology, and to grow best at 10-15 °C, pH 7 and in the absence of NaCl...
December 6, 2017: Antonie Van Leeuwenhoek
A Ahmad, T Subramanian, P Panteliadis, J Wilson-Macdonald, D A Rothenfluh, C Nnadi
AIMS: Magnetically controlled growing rods (MCGRs) allow non-invasive correction of the spinal deformity in the treatment of early-onset scoliosis. Conventional growing rod systems (CGRS) need repeated surgical distractions: these are associated with the effect of the 'law of diminishing returns'. The primary aim of this study was to quantify this effect in MCGRs over sequential distractions. PATIENTS AND METHODS: A total of 35 patients with a maximum follow-up of 57 months were included in the study...
December 2017: Bone & Joint Journal
Sylvia Kristyanto, Dhiraj Kumar Chaudhary, Jaisoo Kim
We conducted a taxonomic study of two algicidal bacteria, designated strains Yeonmyeong 1-13T and Yeonmyeong 1-11, isolated from seawater off Geoje Island in the South Sea, Republic of Korea. The two novel strains were yellow-pigmented, halotolerant, Gram-stain-negative, strictly aerobic, non-spore-forming, rod-shaped bacteria. Both strains were able to grow at 5-39 °C, pH 5.0-10.0 and 0-11 % (w/v) NaCl concentration. Based on the 16S rRNA gene sequence analysis, strains Yeonmyeong 1-13T and Yeonmyeong 1-11 belonged to the genus Stakelama and are closely related to Stakelama pacifica JLT832T (98...
December 5, 2017: International Journal of Systematic and Evolutionary Microbiology
Dhiraj Kumar Chaudhary, Jaisoo Kim
During a study of oil-degrading bacteria, three yellow-coloured, Gram-stain-negative, non-motile and rod-shaped bacteria, designated strains Ktm-14T, Ktm-17 and Ktm-18, were isolated from oil-contaminated soil of Biratnagar, Morang, Nepal. The strains were able to grow at 15-37 °C, pH 4.5-10.0 and 0-2 % (w/v) NaCl concentration. Strains Ktm-14T, Ktm-17 and Ktm-18 were characterized by multiple taxonomic approaches. Based on 16S rRNA gene sequence analysis, strains Ktm-14T, Ktm-17 and Ktm-18 belonged to the genus Sphingopyxis and shared highest sequence similarity with Sphingopyxis ginsengisoliGsoil 250T (98...
December 5, 2017: International Journal of Systematic and Evolutionary Microbiology
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