Functional Outcome of Intramedullary Nailing with Rush Pin for Pediatric Both Bone Fractures of Forearm in Western Hilly Nepal

Introduction: Both bone diaphysis fracture of forearm is common in children of hilly area in Nepal because the children climbs tree and cliff for playing and cutting grass. Close reduction and casting is the preferred method of treatment these fractures but the chances of re-displacement is very high. Intramedullary nailing with titanium elastic nails or rush pins is widely accepted these days with good outcome. Titanium nails are popular in western world but is costly whereas rush pins are cheap and are preferred in developing world. The aim of this study was to evaluate the functional outcome of intramedullary rush pin for pediatric both bone fracture of forearm. Methods: In this retrospective, observational study done from 1st of February 2017 to 31st of March 2017, a total of sixty patients with both bone fractures of forearm were treated with intramedullary rush pin and followed up for six months for evaluation of functional outcome. T-test and Chi-square tests were done. Results: Closed reduction and internal fixation was done in 48 (80%) patients. Mean age of the patients was 9.23 year (SD=2.77). Fifty-six (93.3%) patients were male with a significant difference (p<0.001). With price et al. grading system, 49 (81.7%) patients had excellent results, nine (15%) had good and two (3.3%) patients had fair results. There was no major complication. Mean time to implant removal was 24.16 weeks (SD=1.62) from the time of surgery with range of 20 to 28 weeks. Among transverse and oblique fractures, patients with transverse fracture were likely to have better outcome (p=0.04). Conclusion: Intramedullary nailing with rush pin gives excellent to good functional outcome in majority of the cases without major complications at low cost for management of both bone fractures of forearm in children

3D Nonwoven Fabrics for Biomedical Applications

Fibrous materials are attractive for biomedical applications owing to their structural superiorities, which include large surface-area-to-volume ratio, high porosity, and pore interconnectivity in a controlled manner. Among the various methods of fiber fabrication, electrospinning has emerged as an attractive nanotechnology to produce ultrafine fibrous materials for myriad applications, including tissue scaffolding. In this technique, processing parameters, such as the solution properties, tip-to-collector distance, applied voltage, etc., can be tailored to obtain the fibers of the desired morphology and physicochemical properties. Ideal scaffolds should meet the basic requirements, such as three-dimensional (3D) architecture, proper mechanical properties and biodegradability, and the sufficient surface characteristics for cell adhesion and proliferation. However, most of the electrospun nanofiber-based scaffolds have densely packed two-dimensional (2D) array which hinders the cell infiltration and growth throughout the scaffolds, thereby limiting their applicability in tissue regeneration. To overcome this problem, several attempts have been made to develop a biomimetic three-dimensional, nanofibrous scaffold. This chapter deals with noble techniques including gas foaming (GF), charge repulsion-assisted fabrication, post-processing, liquid-assisted collection, collector modification, and porogen-assisted methods for the fabrication of 3D nanofibrous scaffold for biomedical applications

Functional Outcome of Intramedullary Nailing with Rush Pin for Pediatric Both Bone Fractures of Forearm in Western Hilly Nepal

Introduction: Both bone diaphysis fracture of forearm is common in children of hilly area in Nepal because the children climbs tree and cliff for playing and cutting grass. Close reduction and casting is the preferred method of treatment these fractures but the chances of re-displacement is very high. Intramedullary nailing with titanium elastic nails or rush pins is widely accepted these days with good outcome. Titanium nails are popular in western world but is costly whereas rush pins are cheap and are preferred in developing world. The aim of this study was to evaluate the functional outcome of intramedullary rush pin for pediatric both bone fracture of forearm. Methods: In this retrospective, observational study done from 1st of February 2017 to 31st of March 2017, a total of sixty patients with both bone fractures of forearm were treated with intramedullary rush pin and followed up for six months for evaluation of functional outcome. T-test and Chi-square tests were done. Results: Closed reduction and internal fixation was done in 48 (80%) patients. Mean age of the patients was 9.23 year (SD=2.77). Fifty-six (93.3%) patients were male with a significant difference (p<0.001). With price et al. grading system, 49 (81.7%) patients had excellent results, nine (15%) had good and two (3.3%) patients had fair results. There was no major complication. Mean time to implant removal was 24.16 weeks (SD=1.62) from the time of surgery with range of 20 to 28 weeks. Among transverse and oblique fractures, patients with transverse fracture were likely to have better outcome (p=0.04). Conclusion: Intramedullary nailing with rush pin gives excellent to good functional outcome in majority of the cases without major complications at low cost for management of both bone fractures of forearm in children

Nanostructured Manganese Hexacyanidocobaltate(III) as Heterogeneous Catalyst for Solvent-Free Oxidation of Benzyl Alcohol

Manganese hexacyanidocobaltate(III) nanostructures have been synthesized using double decomposition method and characterized in terms of CHNS analysis, atomic absorption spectroscopy, thermal analysis, infrared spectral studies and transmission electron microscopic technique. The transmission electron microscopic image of the synthesized material showed that it is consisting of roughly spherical shaped particle with size range of 30-60 nm. The catalytic activity of the synthesized material was studied for the oxidation of benzyl alcohol, using H2O2 as oxidant, under solvent-free conditions. The characterization of the oxidation product of benzyl alcohol and its quantitative estimation was done using gas chromatography. The synthesized material was found to be an effective heterogeneous catalyst with a high selectivity towards benzaldehyde as the oxidation product. It showed 31% conversion of benzyl alcohol under the optimized conditions of various reaction parameters, namely, amount of catalyst, reaction temperature, benzyl alcohol to H2O2 molar ratio and the reaction time

Article 4 Usher Syndrome: Case Reports of Two Siblings

ABSTRACT Background: Usher syndrome is a rare autosomal recessive disorder characterized by congenital sensory neural deafness and progressive visual loss secondary to retinitis pigmentosa. There are three different types of Usher syndrome. Retinitis pigmentosa is the main ophthalmic manifestation shared by all three. Differences in auditory and vestibular function are the distinguishing feature

Sequence Analysis of Novel Staphylococcus aureus Lineages from Wild and Captive Macaques

Staphylococcus aureus is a widespread and common opportunistic bacterium that can colonise or infect humans as well as a wide range of animals. There are a few studies of both methicillin-susceptible S. aureus (MSSA) and methicillin-resistant S. aureus (MRSA) isolated from monkeys, apes, and lemurs, indicating a presence of a number of poorly or unknown lineages of the pathogen. In order to obtain insight into staphylococcal diversity, we sequenced strains from wild and captive individuals of three macaque species (Macaca mulatta, M. assamensis, and M. sylvanus) using Nanopore and Illumina technologies. These strains were previously identified by microarray as poorly or unknown strains. Isolates of novel lineages ST4168, ST7687, ST7688, ST7689, ST7690, ST7691, ST7692, ST7693, ST7694, ST7695, ST7745, ST7746, ST7747, ST7748, ST7749, ST7750, ST7751, ST7752, ST7753, and ST7754 were sequenced and characterised for the first time. In addition, isolates belonging to ST2990, a lineage also observed in humans, and ST3268, a MRSA strain already known from macaques, were also included into the study. Mobile genetic elements, genomic islands, and carriage of prophages were analysed. There was no evidence for novel host-specific virulence factors. However, a conspicuously high rate of carriage of a pathogenicity island harbouring edinB and etD2/etE as well as a higher number of repeat units within the gene sasG (encoding an adhesion factor) than in human isolates were observed. None of the strains harboured the genes encoding Panton–Valentine leukocidin. In conclusion, wildlife including macaques may harbour an unappreciated diversity of S. aureus lineages that may be of clinical relevance for humans, livestock, or for wildlife conservation, given the declining state of many wildlife populations

Sequence Analysis of Novel Staphylococcus aureus Lineages from Wild and Captive Macaques

Staphylococcus aureus is a widespread and common opportunistic bacterium that can colonise or infect humans as well as a wide range of animals. There are a few studies of both methicillin-susceptible S. aureus (MSSA) and methicillin-resistant S. aureus (MRSA) isolated from monkeys, apes, and lemurs, indicating a presence of a number of poorly or unknown lineages of the pathogen. In order to obtain insight into staphylococcal diversity, we sequenced strains from wild and captive individuals of three macaque species (Macaca mulatta, M. assamensis, and M. sylvanus) using Nanopore and Illumina technologies. These strains were previously identified by microarray as poorly or unknown strains. Isolates of novel lineages ST4168, ST7687, ST7688, ST7689, ST7690, ST7691, ST7692, ST7693, ST7694, ST7695, ST7745, ST7746, ST7747, ST7748, ST7749, ST7750, ST7751, ST7752, ST7753, and ST7754 were sequenced and characterised for the first time. In addition, isolates belonging to ST2990, a lineage also observed in humans, and ST3268, a MRSA strain already known from macaques, were also included into the study. Mobile genetic elements, genomic islands, and carriage of prophages were analysed. There was no evidence for novel host-specific virulence factors. However, a conspicuously high rate of carriage of a pathogenicity island harbouring edinB and etD2/etE as well as a higher number of repeat units within the gene sasG (encoding an adhesion factor) than in human isolates were observed. None of the strains harboured the genes encoding Panton–Valentine leukocidin. In conclusion, wildlife including macaques may harbour an unappreciated diversity of S. aureus lineages that may be of clinical relevance for humans, livestock, or for wildlife conservation, given the declining state of many wildlife populations

Variation in grain zinc and iron concentrations, grain yield and associated traits of biofortified bread wheat genotypes in Nepal

Wheat (Triticum aestivum L.) is one of the major staples in Nepal providing the bulk of food calories and at least 30% of Fe and Zn intake and 20% of dietary energy and protein consumption; thus, it is essential to improve its nutritional quality. To select high-yielding genotypes with elevated grain zinc and iron concentration, the sixth, seventh, eighth, and ninth HarvestPlus Yield Trials (HPYTs) were conducted across diverse locations in Nepal for four consecutive years: 2015–16, 2016–17, 2017–18, and 2018–19, using 47 biofortified and 3 non-biofortified CIMMYT-bred, bread wheat genotypes: Baj#1, Kachu#1, and WK1204 (local check). Genotypic and spatial variations were found in agro-morphological traits; grain yield and its components; and the grain zinc and iron concentration of tested genotypes. Grain zinc concentration was highest in Khumaltar and lowest in Kabre. Likewise, grain iron concentration was highest in Doti and lowest in Surkhet. Most of the biofortified genotypes were superior for grain yield and for grain zinc and iron concentration to the non-biofortified checks. Combined analyses across environments showed moderate to high heritability for both Zn (0.48–0.81) and Fe (0.46–0.79) except a low heritability for Fe observed for 7th HPYT (0.15). Grain yield was positively correlated with the number of tillers per m2, while negatively correlated with days to heading and maturity, grain iron, grain weight per spike, and thousand grain weight. The grain zinc and iron concentration were positively correlated, suggesting that the simultaneous improvement of both micronutrients is possible through wheat breeding. Extensive testing of CIMMYT derived high Zn wheat lines in Nepal led to the release of five biofortified wheat varieties in 2020 with superior yield, better disease resistance, and 30–40% increased grain Zn and adaptable to a range of wheat growing regions in the country – from the hotter lowland, or Terai, regions to the dry mid- and high-elevation areas