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Growing rod

Amin Demerdash, Brandon G Rocque, James Johnston, Curtis J Rozzelle, Bulent Yalcin, Rod Oskouian, Johnny Delashaw, R Shane Tubbs
BACKGROUND: Endoscopic third ventriculostomy (ETV) has become one of the most common neuroendoscopic procedures. METHODS: In this article, we will review the major milestones in the history of ETV development from its early use by Walter Dandy to the techniques currently employed with advanced technology. CONCLUSIONS: ETV has become an important technique in the armamentarium of the neurosurgeon. From a meager beginning with few applications, our knowledge of long-term outcomes has evolved...
October 22, 2016: British Journal of Neurosurgery
Hiroko Makita, Emiko Tanaka, Satoshi Mitsunobu, Masayuki Miyazaki, Takuro Nunoura, Katsuyuki Uematsu, Yoshihiro Takaki, Shinro Nishi, Shigeru Shimamura, Ken Takai
A novel iron-oxidizing chemolithoautotrophic bacterium, strain ET2(T), was isolated from a deep-sea sediment in a hydrothermal field of the Bayonnaise knoll of the Izu-Ogasawara arc. Cells were bean-shaped, curved short rods. Growth was observed at a temperature range of 15-30 °C (optimum 25 °C, doubling time 24 h) and a pH range of 5.8-7.0 (optimum pH 6.4) in the presence of NaCl at a range of 1.0-4.0 % (optimum 2.75 %). The isolate was a microaerophilic, strict chemolithoautotroph capable of growing using ferrous iron and molecular oxygen (O2) as the sole electron donor and acceptor, respectively; carbon dioxide as the sole carbon source; and either ammonium or nitrate as the sole nitrogen source...
October 20, 2016: Archives of Microbiology
Pooria Hosseini, Jeff B Pawelek, Stacie Nguyen, George H Thompson, Suken A Shah, John M Flynn, John P Dormans, Behrooz A Akbarnia, Growing Spine Study Group
PURPOSE: Is there any relationship between lengthening intervals and rod fracture in traditional growing rod (TGR) surgery? METHODS: A multicenter EOS database was queried for patients who had: (1) dual growing rods for EOS; (2) minimum 2-year follow-up; (3) a minimum of 2 lengthenings; and (4) revision surgery due to rod fracture. Of 138 patients who met the criteria: 56 patients experienced at least one-rod fracture (RF group) and 82 patients had no rod fractures (NRF group)...
October 19, 2016: European Spine Journal
Awa Diop, Saber Khelaifia, Nicholas Armstrong, Noémie Labas, Pierre-Edouard Fournier, Didier Raoult, Matthieu Million
BACKGROUND: Microbial culturomics represents an ongoing revolution in the characterization of environmental and human microbiome. METHODS: By using three media containing high salt concentration (100, 150, and 200 g/L), the halophilic microbial culturome of a commercial table salt was determined. RESULTS: Eighteen species belonging to the Terrabacteria group were isolated including eight moderate halophilic and 10 halotolerant bacteria. Gracilibacillus massiliensis sp...
2016: Microbial Ecology in Health and Disease
Mariaconcetta Varano, Marco Gaspari, Angela Quirino, Giovanni Cuda, Maria Carla Liberto, Alfredo Focà
Ochrobactrum anthropi is a gram-negative rod belonging to the Brucellaceae family, able to colonize a variety of environments, and actually reported as a human opportunistic pathogen. Despite its low virulence, the bacterium causes a growing number of hospital-acquired infections mainly, but not exclusively, in immunocompromised patients. The aim of this study was to obtain an overview of the global proteome changes occurring in O. anthropi in response to different growth temperatures, in order to achieve a major understanding of the mechanisms by which the bacterium adapts to different habitats and to identify some potential virulence factors...
October 18, 2016: Proteomics
Qiongqiong Qi, Yuanzhi Chen, Laisen Wang, Deqian Zeng, Dong-Liang Peng
We report facile solution approaches for the phase-controlled synthesis of rock-salt cubic CoO (c-CoO) and wurtzite-type hexagonal CoO (h-CoO) nanocrystals. In the syntheses, the cobalt precursor cobalt (II) stearate is decomposed in 1-octadecene at 320 °C, and the crystalline phase of synthesized products depend critically on the amounts of H2O. While the presence of small amounts of H2O promotes the generation of c-CoO, h-CoO is obtained in the absence of H2O. The as-prepared c-CoO nanocrystals exhibit a multi-branched morphology with several short rods growing on the 〈100〉 direction interlaced together whereas the h-CoO nanocrystals show a multi-rod structure with several rods growing on the same base facet along the c-axis...
November 11, 2016: Nanotechnology
Michael J Montalbano, Marios Loukas, Rod J Oskouian, R Shane Tubbs
There is growing evidence that the nervous system influences spinal cord vasculature. However, most descriptions of the spinal cord have paid little attention to this important aspect. We reviewed the literature on the innervation of spinal cord vessels with an emphasis on findings that may be applicable to human medicine. Multiple neurotransmitters and competing theories have been implicated in the neural regulation of spinal cord blood vessels. Identifying valid mechanisms of pathogenesis could be beneficial to human patients with spinal cord lesions...
October 6, 2016: Neurosurgical Review
David W Polly, Stacey J Ackerman, Karen Schneider, Jeff B Pawelek, Behrooz A Akbarnia
PURPOSE: Traditional growing rod (TGR) for early-onset scoliosis (EOS) is effective but requires repeated invasive surgical lengthenings under general anesthesia. Magnetically controlled growing rod (MCGR) is lengthened noninvasively using a hand-held magnetic external remote controller in a physician office; however, the MCGR implant is expensive, and the cumulative cost savings have not been well studied. We compared direct medical costs of MCGR and TGR for EOS from the US integrated health care delivery system perspective...
2016: ClinicoEconomics and Outcomes Research: CEOR
Marisa R Myers, G M King
A novel member of the Acidobacteria was isolated from a microbial mat growing on a geothermally-heated dead tree trunk in Hawai'i Volcanoes National Park (Hawai`i, USA). The rod-shaped, Gram-negative capsulated cells of strain PMMR2T were non-motile, and catalase and oxidase negative. Growth occurred aerobically from 15 oC - 55 oC (optimum 40 oC), and at pH values from 4.5 - 7.0 (optimum 6.5). A limited range of sugars and organic acids supported growth. However, results of a genomic analysis suggested that various polysaccharides might be hydrolyzed as carbon sources, and evidence for pectin degradation was observed in liquid cultures...
September 26, 2016: International Journal of Systematic and Evolutionary Microbiology
Donita I Bylski-Austrow, David L Glos, Anne C Bonifas, Max F Carvalho, Matthew C Coombs, Peter F Sturm
BACKGROUND: Surgical treatments for early onset scoliosis (EOS) correct curvatures and improve respiratory function but involve many complications. A distractible, or 'growing rod,' implant construct that is more flexible than current metal rod systems may sufficiently correct curves in small children and reduce complications due to biomechanical factors. The purpose of this pilot study was to determine ranges of motion (ROM) after implantation of simulated growing rod constructs with a range of clinically relevant structural properties...
2016: Scoliosis and Spinal Disorders
K Zhengda, W Guanjun, Y Qibin, J Huiru, Z Xinyu, D Mingkui
The purpose of this study is to report the effectiveness of transpedicular enucleation and Plate-Rod System for Scoliosis (PRSS) fixation for the treatment of hemivertebral (HV) scoliosis. 16 patients with progressive HV scoliosis underwent the combined procedure. The technique involves excision of cancellous bone to eliminate the blood supply of the cartilaginous endplate and destroy the superior and inferior vertebral end plates, followed by PRSS fixation to correct the main curve and compensatory curve. The mean age at operation was 8...
August 2016: Acta Orthopaedica Belgica
Magdalena Myga-Nowak, Agnieszka Godela, Tomasz Głąb, Monika Lewańska, Janusz Boratyński
It is estimated that each year more than 2 million people suffer from diarrheal diseases, resulting from the consumption of contaminated meat. Foodborne infections are most frequently caused by small Gram-negative rods Campylobacter. The hosts of these bacteria are mainly birds wherein they are part of the normal intestinal flora. During the commercial slaughter, there is a likelihood of contamination of carcasses by the bacteria found in the intestinal content. In Europe, up to 90% of poultry flocks can be a reservoir of the pathogen...
2016: Postȩpy Higieny i Medycyny Doświadczalnej
Yusuke Kondo, Hiroaki Minegishi, Akinobu Echigo, Yasuhiro Shimane, Masahiro Kamekura, Takashi Itoh, Moriya Oukuma, Akira Tanaka, Naoko Takahashi-Ando, Yasumasa Fukushima, Yasuhiko Yoshida, Kunio Ihara, Ron Usami
A Gram-stain-negative, rod-pleomorphic, aerobic, halophilic archaeon, strain MK62-1T was isolated from commercial salt made from seawater in the Philippines. Strain MK62-1T was able to grow at 2.1-4.7 M NaCl (with optimum at 2.1-2.6 M NaCl), pH 6.5-9.5 (optimum, pH 7.0-7.5) and 20-55 °C (optimum, 45-50 °C). Based on the orthologous 16S rRNA gene sequence, the closest relative was Haloparvum sedimenti JCM 30891T with 99.2 % similarity. The RNA polymerase subunit B' gene sequence also showed the highest similarity (97...
September 23, 2016: International Journal of Systematic and Evolutionary Microbiology
Y Subhash, Min-Jeong Park, Sang-Seob Lee
A novel Gram-stain-negative, small curve-rod shaped, motile strain, designated L6T, was isolated from hydrocarbon contaminated soils collected from Kuwait. Strain L6T was able to grow at 10-40ºC (optimum, 27-32 ºC), pH 6.1-8.8 (optimum, 6.5-7.5) and 0-4.5% (w/v) NaCl (optimum, 0-0.5). C18:16c/C18:17c, C16:0, C16:16c/C16:17c, C12:0, C12:03-OH aldehyde were predominant fatty acids with minor amounts of C14:0 and C17:0 cyclo. Phosphatidylglycerol (PG) and phosphatidylethanolamine (PE) were major polar lipids...
September 21, 2016: International Journal of Systematic and Evolutionary Microbiology
Senol Bekmez, Halil Gokhan Demirkiran, Ozgur Dede, Yunus Atici, Mehmet Bulent Balioglu, Moyo Kruyt, Timothy Ward, Muharrem Yazici
BACKGROUND: Pelvic incidence increases gradually throughout growth until skeletal maturity. Growing rod instrumentation has been suggested to have a stabilizing effect on the development of the normal sagittal spinal alignment. The purpose of this study is to determine the effect of fixed sagittal plane caused by dual growing rod instrumentation on the natural progression of sagittal spinopelvic parameters in children with idiopathic or idiopathic-like early onset scoliosis. METHODS: Hospital records of children with growing rod instrumentation from 4 separate institutions were reviewed retrospectively...
September 22, 2016: Journal of Pediatric Orthopedics
Aravind Sundararaman, Sang-Seob Lee
A novel Gram-negative, non-motile, non-spore forming, facultatively anaerobic and short-rod shaped bacterial strain, designated as 325-5(T), was isolated from marine sediment obtained from a coastal region in South Korea. Phylogenetic analysis based on the 16S rRNA gene sequence of strain 325-5(T) showed close similarity to Lutibacter crassostreae (97.8 %). The novel isolate was found to grow optimally at 25 °C and pH 7.0. The major fatty acids identified in the strain were iso C15:0 and iso C15:0 3OH, which supports the affiliation of strain 325-5(T) to the genus Lutibacter...
September 20, 2016: Antonie Van Leeuwenhoek
Kimberly-Anne Tan, Mathew D Sewell, Andrew J Clarke, Daniel Chan, Oliver M Stokes, Shahid N Khan, Michael Hutton
PURPOSE OF THE STUDY: Pacemakers are currently identified as a contraindication for the use of magnetic growth rods (MGRs). This arises from concern that magnetic fields generated by the MGR external remote controller (ERC) during lengthening procedures may induce pacemaker dysfunction. We investigated (1) whether MGR lengthening affects pacemaker function, and (2) if the magnetic field of a pacemaker affects MGR lengthening. METHODS: MGRs were tested in conjunction with an magnetic resonance imaging-compatible pacemaker, which was connected to a virtual patient under continuous cardiac monitoring...
September 15, 2016: Journal of Pediatric Orthopedics
Rachel L Lenhart, Sylvester Youlo, Mary K Schroth, Kenneth J Noonan, James McCarthy, David Mann, Scott Hetzel, Sarah A Sund, Matthew A Halanski
BACKGROUND: Respiratory weakness and spinal deformity are common in patients with spinal muscular atrophy (SMA). Posterior (distraction type) growing rods have recently gained favor as a treatment option in this population, due to their ability to prevent spinal deformity progression and their potential to allow lung volumes to increase over time. The objective of this study was to determine the impact of posterior growing rods on the spinal alignment and respiratory function in children with SMA with intermediate term follow-up...
September 15, 2016: Journal of Pediatric Orthopedics
Allison Palmer, Joseph Painter, Hayley Hassler, Vincent P Richards, Terri Bruce, Shatavia Morrison, Ellen Brown, Natalia A Kozak-Muiznieks, Claressa Lucas, Tamara L McNealy
A novel Legionella species was identified based on sequencing, cellular fatty acid analysis, biochemical reactions, and biofilm characterization. Strain D5610 was originally isolated from the bronchial wash of a patient in Ohio. The bacteria were Gram negative, rod shaped, and exhibited a green fluorescence under long wave UV light. Phylogenetic analysis and fatty acid composition revealed a distinct separation within the genus. The strain grows between 26-45°C and forms biofilms equivalent to L. pneumophila Philadelphia 1...
September 13, 2016: Microbiology and Immunology
Jin Sang, Jun Xia, Christopher A Dunlap, Alejandro P Rooney, Zong-Jun Du
A Gram-stain-negative, non-motile, rod-shaped, orange pigmented strain, WDS4A13T, was isolated from a marine solar saltern in Weihai, China. WDS4A13T grows with an optimal pH at 7.0-8.0, 33°C, with 6% (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequence showed that strain WDS4A13T belonged to the genus Psychroflexus. The levels of similarity between the 16S rRNA gene sequence of strain WDS4A13T and those of the type strains of recognized Psychroflexus species are 92.0-97.3%. The polar lipid profile of the novel isolate consisted of two unidentified phospholipids (PL1, PL2), diphosphatidylglycerol (DPG), phosphatidylethanolamine (PE), a glycolipid (GL1) and an unidentified lipid (L3) as the major polar lipids...
September 8, 2016: International Journal of Systematic and Evolutionary Microbiology
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