741 research outputs found

    Primary tendon repair in a case of acute traumatic tibialis anterior with extensor hallucis longus tendon rupture in a young male-a case report

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    Tibialis anterior tendon rupture is a rare entity which can be either traumatic and non-traumatic. It often presents late due to mild clinical symptoms and signs. Acute ruptures are traumatic occurring in young individuals while chronic ruptures are due to degenerative processes occurring in elderly individuals, commonly after 45 years of age. Tibia anterior along with extensor hallucis tendon is an even rarer entity, operative management of which becomes mandatory, more so in a young active individual for better outcome. We have a 31-year-old male patient, who presented to us with an acute post traumatic tibialis anterior tendon rupture of 3 days duration which was diagnosed following an initial clinical examination, an unremarkable X-ray picture, and Ultrasonography confirming the diagnosis. The patient was managed with primary repair of the tibialis anterior tendon along with Extensor hallucis tendon (which was found intra-operatively) with 2-0 ethibond sutures using a cross-linked Bunnell technique. The patient regained full ankle range of motion at 8 weeks post operative period with ankle dorsiflexion and great toe extension back to pre-injury state.As we have seen with this case, early primary repair in a case of acute rupture at tibialis anterior and extensor hallucis longus rupture with non-absorbable suture has significant improved post operative outcome in terms of return of the affected range of motion and can be practice safely in new hands with limited resources as material of suture and technique has not significant effect in post operative outcome. Acute tibialis anterior and extensor hallucis tendon rupture, non absorbable suture, ethibond, cross linked Bunnell technique.

    The management of complex periprosthetic femoral fractures: a case series of plating with wire augmentation, and a review of the literature

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    Periprosthetic fractures continue to increase in frequency. This is due, in part, to the increasing number of primary and revision arthroplasties performed annually and to the increasing age and fragility of patients with such implants. All types of periprosthetic fractures can present unique and substantial treatment challenges. Here we present a case series of 3 elderly patients who came to us with periprosthetic hip fractures in previously operated case of hip hemiarthroplasty/total hip replacement done. The injuries were managed with splintage and operative procedures. Postoperatively mobilization was challenging. But patients were successfully mobilized with the help of relatives and physiotherapists. Periprosthetic fractures are becoming quite common in elderly and difficult to treat as the number of hip joint arthroplasty operative has increased in developing countries. the correct procedure is very challenging as every case needs to be treated very individualistically. A good plan always results in much reduction in the operating time and better patient post operative outcome. Postoperatively mobilization of patient and functional outcome is hampered. Proper counselling by operating surgeon, physiotherapy and postoperative rehabilitation with the help of relatives and assisting devices provides good outcome. So that early appropriate treatment and mobilization can be done with good functional outcome

    A case report on surgical excision of intracapsular osteochondroma of femur neck using medial approach without hip dislocation in a young male

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    Osteochondromas also called exostosis are commonest benign bone tumours. Traditionally Osteochondroma are considered as developmental malformations rather than true neoplasms and are thought to formed inside the periosteum due to separation of small epiphyseal growth plate cartilage. But recent studies suggested it’s relation with mutation in gene exotoxin 1 so now they are considered as true neoplasm. The lesions consist of a bony mass produced by progressive endochondral ossification of a growing cartilaginous cap. Most lesions are found during the period of rapid skeletal growth. Approximately 90% of patients only have a single lesion. Osteochondromas generally found on the metaphysis of a long bone near the physis like distal femur, proximal humerus, and proximal tibia. Due to risk of AVN after surgical management makes it difficult for excision. Due to close proximity to important neurovascular bundles these lesions can cause symptoms related to compression. Hip impingement is also common in these cases. Recurrence of osteochondromas are rare sometimes seen due to failure to remove the entire cartilaginous cap. A 24-year-old male presented with complaints of pain around the right hip and difficulty in walking and running since 2 year. On radiographic examination Right sided neck femur osteochondroma was diagnosed, which was located along the anteroinferior margin of the femur neck. Excision of the lesion was done in supine position using medial approach to hip without dislocation of the femur head. Femur neck osteochondroma should be removed surgically safely without dislocating hip. Osteochondroma must be removed completely with cartilagenous cap to avoid recurrence

    Exogenous glucosamine globally protects chondrocytes from the arthritogenic effects of IL-1β

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    The effects of exogenous glucosamine on the biology of articular chondrocytes were determined by examining global transcription patterns under normal culture conditions and following challenge with IL-1β. Chondrocytes isolated from the cartilage of rats were cultured in several flasks either alone or in the presence of 20 mM glucosamine. Six hours later, one-half of the cultures of each group were challenged with 10 ng/ml IL-1β. Fourteen hours after this challenge, RNA was extracted from each culture individually and used to probe microarray chips corresponding to the entire rat genome. Glucosamine alone had no observable stimulatory effect on the transcription of primary cartilage matrix genes, such as aggrecan, collagen type II, or genes involved in glycosaminoglycan synthesis; however, glucosamine proved to be a potent, broad-spectrum inhibitor of IL-1β. Of the 2,813 genes whose transcription was altered by IL-1β stimulation (P < 0.0001), glucosamine significantly blocked the response in 2,055 (~73%). Glucosamine fully protected the chondrocytes from IL-1-induced expression of inflammatory cytokines, chemokines, and growth factors as well as proteins involved in prostaglandin E(2 )and nitric oxide synthesis. It also blocked the IL-1-induced expression of matrix-specific proteases such as MMP-3, MMP-9, MMP-10, MMP-12, and ADAMTS-1. The concentrations of IL-1 and glucosamine used in these assays were supraphysiological and were not representative of the arthritic joint following oral consumption of glucosamine. They suggest, however, that the potential benefit of glucosamine in osteoarthritis is not related to cartilage matrix biosynthesis, but is more probably related to its ability to globally inhibit the deleterious effects of IL-1β signaling. These results suggest that glucosamine, if administered effectively, may indeed have anti-arthritic properties, but primarily as an anti-inflammatory agent

    Mycobacterium indicus pranii Supernatant Induces Apoptotic Cell Death in Mouse Peritoneal Macrophages In Vitro

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    Mycobacterium indicus pranii (MIP), also known as Mw, is a saprophytic, non-pathogenic strain of Mycobacterium and is commercially available as a heat-killed vaccine for leprosy and recently tuberculosis (TB) as part of MDT. In this study we provide evidence that cell-free supernatant collected from original MIP suspension induces rapid and enhanced apoptosis in mouse peritoneal macrophages in vitro. It is demonstrated that the MIP cell-free supernatant induced apoptosis is mitochondria-mediated and caspase independent and involves mitochondrial translocation of Bax and subsequent release of AIF and cytochrome c from the mitochondria. Experiments with pharmacological inhibitors suggest a possible role of PKC in mitochondria-mediated apoptosis of macrophages

    Lead-Time Trajectory of CA19-9 as an Anchor Marker for Pancreatic Cancer Early Detection

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    Background & Aims There is substantial interest in liquid biopsy approaches for cancer early detection among subjects at risk, using multi-marker panels. CA19-9 is an established circulating biomarker for pancreatic cancer; however, its relevance for pancreatic cancer early detection or for monitoring subjects at risk has not been established. Methods CA19-9 levels were assessed in blinded sera from 175 subjects collected up to 5 years before diagnosis of pancreatic cancer and from 875 matched controls from the Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial. For comparison of performance, CA19-9 was assayed in blinded independent sets of samples collected at diagnosis from 129 subjects with resectable pancreatic cancer and 275 controls (100 healthy subjects; 50 with chronic pancreatitis; and 125 with noncancerous pancreatic cysts). The complementary value of 2 additional protein markers, TIMP1 and LRG1, was determined. Results In the PLCO cohort, levels of CA19-9 increased exponentially starting at 2 years before diagnosis with sensitivities reaching 60% at 99% specificity within 0 to 6 months before diagnosis for all cases and 50% at 99% specificity for cases diagnosed with early-stage disease. Performance was comparable for distinguishing newly diagnosed cases with resectable pancreatic cancer from healthy controls (64% sensitivity at 99% specificity). Comparison of resectable pancreatic cancer cases to subjects with chronic pancreatitis yielded 46% sensitivity at 99% specificity and for subjects with noncancerous cysts, 30% sensitivity at 99% specificity. For prediagnostic cases below cutoff value for CA19-9, the combination with LRG1 and TIMP1 yielded an increment of 13.2% in sensitivity at 99% specificity ( P = .031) in identifying cases diagnosed within 1 year of blood collection. Conclusion CA19-9 can serve as an anchor marker for pancreatic cancer early detection applications

    Nijmegen Breakage Syndrome Detected by Newborn Screening for T Cell Receptor Excision Circles (TRECs)

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    PURPOSE: Severe combined immunodeficiency (SCID) encompasses a group of disorders characterized by reduced or absent T-cell number and function and identified by newborn screening utilizing T-cell receptor excision circles (TRECs). This screening has also identified infants with T lymphopenia who lack mutations in typical SCID genes. We report an infant with low TRECs and non-SCID T lymphopenia, who proved upon whole exome sequencing to have Nijmegen breakage syndrome (NBS). METHODS: Exome sequencing of DNA from the infant and his parents was performed. Genomic analysis revealed deleterious variants in the NBN gene. Confirmatory testing included Sanger sequencing and immunoblotting and radiosensitivity testing of patient lymphocytes. RESULTS: Two novel nonsense mutations in NBN were identified in genomic DNA from the family. Immunoblotting showed absence of nibrin protein. A colony survival assay demonstrated radiosensitivity comparable to patients with ataxia telangiectasia. CONCLUSIONS: Although TREC screening was developed to identify newborns with SCID, it has also identified T lymphopenic disorders that may not otherwise be diagnosed until later in life. Timely identification of an infant with T lymphopenia allowed for prompt pursuit of underlying etiology, making possible a diagnosis of NBS, genetic counseling, and early intervention to minimize complications

    Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

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    Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

    Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks

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    A search is presented for narrow heavy resonances X decaying into pairs of Higgs bosons (H) in proton-proton collisions collected by the CMS experiment at the LHC at root s = 8 TeV. The data correspond to an integrated luminosity of 19.7 fb(-1). The search considers HH resonances with masses between 1 and 3 TeV, having final states of two b quark pairs. Each Higgs boson is produced with large momentum, and the hadronization products of the pair of b quarks can usually be reconstructed as single large jets. The background from multijet and t (t) over bar events is significantly reduced by applying requirements related to the flavor of the jet, its mass, and its substructure. The signal would be identified as a peak on top of the dijet invariant mass spectrum of the remaining background events. No evidence is observed for such a signal. Upper limits obtained at 95 confidence level for the product of the production cross section and branching fraction sigma(gg -> X) B(X -> HH -> b (b) over barb (b) over bar) range from 10 to 1.5 fb for the mass of X from 1.15 to 2.0 TeV, significantly extending previous searches. For a warped extra dimension theory with amass scale Lambda(R) = 1 TeV, the data exclude radion scalar masses between 1.15 and 1.55 TeV

    Measurement of the top quark mass using charged particles in pp collisions at root s=8 TeV

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