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Orthopedics Research

08:23 EST 13th December 2018 | BioPortfolio

Physiological in vitro sacroiliac joint motion: a study on three-dimensional posterior pelvic ring kinematics.

The sacroiliac joint (SIJ) is a well-known source of low back and pelvic pain, of increasing interest for both conservative and surgical treatment. Alterations in the kinematics of the pelvis have been hypothesized as a major cause of SIJ-related pain. However, definitions of both the range and the extent of physiological movement are controversial, and there are no clear baseline data for patholo...

Biological links in periodontitis and rheumatoid arthritis: Discovery via text-mining PubMed abstracts.

Primary research concerning molecular pathways that link rheumatoid arthritis with periodontitis is limited. Biomedical literature data mining can offer insights into putative linkage mechanisms toward hypothesis development, based on information discovery. The aim of this study was to explore potential Periodontitis-Rheumatoid Arthritis biological links by analysing "overlapping" genes reported i...

Nigral iron deposition in common tremor disorders.

We investigated R2* relaxation rates as a marker of iron content in the substantia nigra in patients with common tremor disorders and explored their diagnostic properties.

Synthesis and characterization of novel substituted thiophene derivatives and discovery of their carbonic anhydrase and acetylcholinesterase inhibition effects.

Novel substituted thiophene derivatives (1, 2a-e, 3, and 4) were synthesized and their structures were characterized by infrared radiation, nuclear magnetic resonance, and mass analysis. These novel substituted thiophene derivatives were effective inhibitor compounds of the carbonic anhydrase I and II isozymes (hCA I and II), and acetylcholinesterase (AChE) enzyme with K values in the range of 44...

Downregulation of microRNA-23b protects against ischemia-reperfusion injury via p53 signaling pathway by upregulating MDM4 in rats.

Total knee arthroplasty is a commonly performed safe procedure and typically executed in severe knee arthritis, but it also triggers ischemia-reperfusion injury (IRI). More recently, microRNAs (miRs) have been reported to play a contributory role in IRI through the key signaling pathway. Hence, the current study aimed to investigate the effect and specific mechanism of microRNA-23b (miR-23b), muri...

A NEW COMPREHENSIVE PROCEDURE FOR CUSTOM-MADE TOTAL ANKLE REPLACEMENTS: MEDICAL IMAGING, JOINT MODELING, PROSTHESIS DESIGN, AND 3D PRINTING.

Many failures in total joint replacement are associated to prosthesis-to-bone mismatch. With recent additive-manufacturing, i.e. 3D-printing, custom-made prosthesis can be created by laser-melting metal powders layer-by-layer. Ankle replacement is particularly suitable for this progress because of the limited number of sizes and the poor bone stock. In this study a novel procedure is presented for...

Utility and implications of exome sequencing in early-onset Parkinson's disease.

Although the genetic load is high in early-onset Parkinson's disease, thorough investigation of the genetic diagnostic yield has yet to be established. The objectives of this study were to assess variants in known genes for PD and other movement disorders and to find new candidates in 50 patients with early-onset PD.

Putative contributions of the sex chromosome proteins SOX3 and SRY to neurodevelopmental disorders.

The male-biased prevalence of certain neurodevelopmental disorders and the sex-biased outcomes associated with stress exposure during gestation have been previously described. Here, we hypothesized that genes distinctively targeted by only one or both homologous proteins highly conserved across therian mammals, SOX3 and SRY, could induce sexual adaptive changes that result in a differential risk f...

Prognostic performance of the American Joint Committee on Cancer 8th edition of the TNM staging system in patients with early oral tongue cancer.

The 8th edition of the American Joint Committee on Cancer's (AJCC) staging system for oral cavity cancer incorporates pathological features. We aimed to assess whether these changes results in better risk stratification of patients with early oral tongue squamous cell carcinoma (OTSCC).

The association of klotho gene polymorphism and the regulation of calcium-phosphate metabolism disorders in patients with ESRD.

Klotho G-395-A gene polymorphism is associated with several diseases; however, its association with calcium-phosphate metabolism disorders in end-stage renal disease (ESRD) is unknown.

Development of an in house ELISA for human intact osteocalcin and its utility in diagnosis and management of osteoporosis.

Serum Osteocalcin (OC) is a biomarker for evaluating bone turnover in humans. Commercial kits of OC in India are imported, hence expensive prohibiting their use in routine screening of osteoporosis. The present study describes the development, validation of human OC ELISA and establishes cut off values for its use in screening and management of women at risk for osteoporosis.

Joint contractures and acquired deforming hypertonia in older people: Which determinants?

Joint contractures and acquired deforming hypertonia are frequent in dependent older people. The consequences of these conditions can be significant for activities of daily living as well as comfort and quality of life. They can also negatively affect the burden of care and care costs. However, etiological factors and pathophysiologic mechanisms remain only partly understood. As a result, preventi...

Insomnia as a predictor of mental disorders: A systematic review and meta-analysis.

Previous research has identified insomnia as a predictor for the onset of depression. The aim of this meta-analysis is to investigate whether insomnia also predicts the onset of other mental disorders. Longitudinal studies were eligible for inclusion if they investigated insomnia at baseline (including nighttime- and daytime-symptoms) as a predictor of the later onset of psychopathology within a f...

Resveratrol attenuates the MSU crystal-induced inflammatory response through the inhibition of TAK1 activity.

TAK1 is closely associated with the NF-κB and MAPK signaling pathways. In the present study, we aimed to explore the relationship between TAK1 and gout as well as the effects of resveratrol on TAK1 activity and MSU crystal-induced inflammation. The expression levels of total TAK1 and phosphorylated TAK1 in gout patients were detected by western blotting. The influence of resveratrol on TAK1 activ...

Expressway to Rheumatoid Arthritis by Macrophage-derived Microvesicle-Coated Nanoparticles.

The targeted delivery of therapeutics to sites of rheumatoid arthritis (RA) has been a long-standing challenge. Inspired by the intrinsic inflammation-targeting capacity of macrophages, macrophage-derived microvesicle (MMV)-coated nanoparticle (MNP) was developed for targeting RA. MMV was efficiently produced through a novel method. Cytochalasin B (CB) was applied to relax the interaction between ...

An update of cyclooxygenase (COX)-inhibitors in epilepsy disorders.

Neuroinflammation has a critical role in brain disorders. Cyclooxygenase (COX) is one of the principal drug targets for the reduction of neuroinflammation; however, studies have yielded mixed results for COX-inhibitors in the treatment of diverse acute and chronic models of epilepsy. Areas covered: The article covers the effects of COX-inhibitors in epilepsy disorders. A considerable emphasis has ...

Screening for osteoporosis: A systematic assessment of the quality and content of clinical practice guidelines, using the AGREE II instrument and the IOM Standards for Trustworthy Guidelines.

Numerous clinical practice guidelines (CPGs) are published to guide management of osteoporosis. Little is known about their quality or how recommendations have changed over time.

Regenerated Bone Pattern Around Exposed Implants with Various Designs.

The design and surface features of dental implants substantially affect the healing and remodeling of adjacent bones. This study aimed to investigate the impact of design and surface on bone regeneration using implants of two different pitches, each with three different surface features.

Prevalence of osteoporosis and osteopenia in patients occupationally active.

Osteoporosis is a public health problem worldwide, affecting more than 200 million people. It is estimated that 30 to 50% of postmenopausal women suffer from it. According to the International Osteoporosis Foundation (IOF), osteoporosis is a disease characterized by a decrease in the density and quality of bones. The objective of this work was to know the prevalence of osteoporosis and osteopenia ...

Continuous vs. intermitent intravenous analgesia for primary total knee replacement: analysis of the quality of the pain control, hospital stay and costs.

The International Association for the Study of Pain (IASP) defines pain as an unpleasant sensory and emotional experience associated with actual or potential tissue damage. Total knee arthroplasty is one of the orthopedic surgeries that manifests more pain in the first 24-48 hours, needing a multimodal analgesic therapy. The objective of this work is to compare two different intravenous analgesic ...

Quantification of changes in the external morphology of the back by means of surface topography based on structured light in idiopathic scoliosis in adolescents after a year of treatment with orthopedic corse.

To quantify the morphological changes in the surface of the back of adolescents with idiopathic scoliosis as a result of treatment with braces and to correlate them with radiographic changes.

Interlocking femoral nail and total knee Arthroplasty in one stage for a patient with a femoral diaphyseal stress fracture.

We present the case of an 81-year-old woman who was followed up by the Rheumatology Service for osteoporosis and treated with bisphosphonates for more than five years. She reported a fracture of the distal third of the contralateral femur by a low energy mechanism, treated with retrograde intramedullary nailing the previous year. She presented a clinic of cruralgia and left gonalgia, without previ...

Syndrome of vertebral destruction: understanding to practice.

The term «vertebral destruction syndrome» comprises pathologies causing structural changes in the spine, mainly in the vertebral body, producing mechanical deformity and neurological involvement. The pathologies found in this definition may be infectious, metabolic or tumoral. Vertebral osteomyelitis is a disease that occurs mainly in adults > 50 years; we speak of spondylodiscitis when the cond...

Hide and Seek.

A 51-year-old woman with a previous history of rheumatoid arthritis experienced painless and progressive visual loss in the left eye for three weeks. Fundus examination revealed optic disc pallor in her left eye. Magnetic resonance imaging of the brain and orbits showed enhancement of the pachymeninges and hypersignal at the left optic nerve. Meningeal biopsy was performed. Immunohistochemical sta...

Action co-representation and the sense of agency during a joint Simon task: Comparing human and machine co-agents.

Recent studies have suggested that individuals are not able to develop a sense of joint agency during joint actions with artificial systems. We sought to examine whether this lack of joint agency is linked to individuals' inability to co-represent the machine-generated actions. Fifteen participants observed or performed a Simon response time task either individually, or jointly with another human ...

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