Αρχειοθήκη ιστολογίου

Πέμπτη 23 Ιουνίου 2022

Bilateral upper extremity motor priming (BUMP) plus task-specific training for severe, chronic upper limb hemiparesis: study protocol for a randomized clinical trial

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Various priming techniques to enhance neuroplasticity have been examined in stroke rehabilitation research. Most priming techniques are costly and approved only for research. Here, we describe a priming techni...
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Drugs and convalescent plasma therapy for COVID-19: a survey of the interventional clinical studies in Italy after 1 year of pandemic

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The 2019 novel coronavirus disease (COVID-19) pandemic has highlighted the importance of health research and fostered clinical research as never before. A huge number of clinical trials for potential COVID-19 ...
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Tailoring limb length based on total small bowel length in one anastomosis gastric bypass surgery (TAILOR study): study protocol for a randomized controlled trial

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The one anastomosis gastric bypass (OAGB) is being performed by an increasing number of bariatric centers over the world. However, the optimal length of the biliopancreatic (BP) limb remains a topic of discuss...
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Investigations Into Obesity and the Risk of Malignant Disease in Pediatric Thyroid Nodules—Reply

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In Reply We thank Gallant et al for their interest in our recent publication regarding the association of body mass index (BMI) with thyroid cancer in children with thyroid nodules. We agree that differences in design may account for some discrepancies between our study and theirs. Different methods of calculating BMI z-scores might play a role, although our selection of the Centers for Disease Control and Prevention nomograms reflects their wide use in clinical practice. Similarly, our use of nodule diameter rather than nodule volume reflec ts current recommendations for thyroid nodule evaluation, and is unlikely to be relevant given the excellent correlation of these measures in our cohort (r = 0.97; 95% CI, 0.96-0.97).
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Investigations Into Obesity and the Risk of Malignant Disease in Pediatric Thyroid Nodules

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To the Editor It is with great interest that we read the recent contribution from Ivanova et al, in which the authors found no association between body mass index z-score (BMIz) and the risk of malignant disease in pediatric thyroid nodules. The authors' findings contrast with our own study, in which we found BMIz to be a significant and independent predictor of pediatric thyroid cancer. We want to highlight a few differences between the studies, which may explain variance in the results.
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Risk of Stroke After Definitive Radiotherapy—Cause for Concern or Modest Risk?

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With the rapidly increasing prevalence of oropharyngeal squamous cell carcinoma (OPSCC), largely driven by the human papillomavirus (HPV) epidemic, and with relative equipoise between radiation-based and surgery-based treatment protocols, there has been renewed interest in describing differences in functional outcomes between the 2 treatment modalities. Radiation is theoretically related to stroke risk due to carotid artery intimal injury, which could lead to the development of atherosclerosis. Both carotid artery stenosis and carotid intima -medial thickness have been shown to be associated with radiation therapy providing a biologic basis for the findings. A retrospective population-based cohort study of veterans with OPSCC authored by Sun et al reported a 12.5% imputed stroke risk within 10 years after treatment. The major finding of this study is that there was an observed 23% relative risk reduction of stroke in patients treated with definitive surgery as compared with those treated with definitive radiotherapy. Although there were notable differences between the groups at baseline, in particular higher T- and N-stage as well as worse ECOG performance status and Charlson Comorbidity Index in the nonsurgical group, the authors conducted propensity score–based analyses to account for these imbalances. Interestingly, there was no increase in stroke risk among surgical patients treated with adjuvant radiation as compared with those treated with surgery alone. (Other population-based studies have observed the same.)
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Cooled Radiofrequency Ablation of Genicular Nerves Provides 24‐Month Durability in the Management of Osteoarthritic Knee Pain: Outcomes from a Prospective, Multicenter, Randomized Trial

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Abstract

Objective

To assess long-term outcomes of cooled radiofrequency ablation (CRFA) of genicular nerves for chronic knee pain due to osteoarthritis (OA).

Methods

A prospective, observational extension of a randomized, controlled trial was conducted on adults randomized to CRFA. Subjects were part of a 12-month clinical trial comparing CRFA of genicular nerves to a single hyaluronic injection for treatment of chronic OA knee pain, who then agreed to visits at 18- and 24-months post CRFA and had not undergone another knee procedure since. The subjects were evaluated for: pain using the Numeric Rating Scale (NRS), function using the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), subjective benefit using the Global Perceived Effect (GPE) scale, quality of life using the EuroQol-5-Dimensions-5 Level (EQ-5D-5L) questionnaire, and safety.

Results

Of 57 subjects eligible, 36 enrolled; 32 completed the 18-month visit with a mean NRS score of 2.4 and 22 (69%) reporting ≥50% reduction in pain from baseline (primary endpoint); 27 completed the 24-month visit, with a mean NRS of 3.4 and 17 (63%) reporting ≥50% pain relief. Functional and quality of life improvements persisted similarly, with mean changes from baseline of 53.5% and 34.9% in WOMAC total scores, and 24.8% and 10.7% in EQ-5D-5L Index scores, at 18- and 24-months, respectively. There were no identified safety concerns in this patient cohort.

Conclusion

In this subset of subjects, CRFA of genicular nerves provided durable pain relief, improved function, and improved quality of life extending to 24 months post procedure, with no significant safety concerns.

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Influence of cross‐sectional area and fat infiltration of paraspinal muscles on analgesic efficacy of epidural steroid injection in elderly patients

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Abstract

Background

An assessment of paraspinal muscle degeneration based on magnetic resonance imaging has been used to investigate both sarcopenia and myosteatosis. The morphologic changes in cross-sectional area and fat infiltration of the paraspinal muscles can affect pain outcomes after epidural steroid injection.

Methods

Patients ≥ 65 years of age who underwent fluoroscopy-guided lumbar epidural steroid injections were enrolled. Good analgesia was defined as ≥ 50% reduction in pain score at 4 weeks after injection. Cross-sectional area and grade of fat infiltration of the paraspinal muscles on magnetic resonance images at the level of L3-L4 disc were measured. Patient demographics, pain-related factors, clinical factors, and paraspinal muscle measurements were compared between good and poor analgesia groups. The factors associated with pain outcome after injection were identified using multivariate analysis.

Results

A total of 245 patients consisting of 149 and 96 patients in the good and poor analgesia groups, respectively, fully satisfied the study criteria for analysis. Patients of older age, opioid use, and high-grade foraminal stenosis were frequently observed in the poor analgesia group. The grade of fat infiltration of the paraspinal muscles was significantly higher in the poor analgesia group (Grade 2, 20.8 vs. 42.7%, P < 0.001), and this result was predominantly observed in female patients. However, there was no difference in muscle cross-sectional area between the two groups (18.29 ± 3.16 vs. 18.59 ± 3.03 cm2/m2, P = 0.460). The percentage of patients with good analgesia decreased as the grade of fat infiltration increased (Grade 0 = 75.0%, Grade 1 = 65.8%, Grade 2 = 43.0%, P < 0.001). Multivariate logistic regression analysis revealed that pre-injection opioid use [adjusted odds ratio (aOR) = 1.926, 95% confidence interval (CI) = 1.084–3.422, P = 0.025], moderate to severe foraminal stenosis (aOR = 2.859, 95% CI = 1.371–5.965, P = 0.005), and high-grade fat infiltration of the paraspinal muscles (aOR = 4.258, 95% CI = 1.805–10.043, P = 0.001) were significantly associated with poor analgesia after injection.

Conclusion

High fat infiltration of the paraspinal muscles at the mid-lumbar region appeared to be an independent factor associated with poor analgesia after epidural steroid injection in elderly patients with symptomatic degenerative lumbar spinal disease receiving conservative care. However, cross-sectional area of the paraspinal muscles was not associated with pain relief after injection.

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Novel cancer gene discovery using a forward genetic screen in RCAS-PDGFB-driven gliomas

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Abstract
Background
Malignant gliomas, the most common malignant brain tumors in adults, represent a heterogeneous group of diseases with poor prognosis. Retroviruses can cause permanent genetic alterations that modify genes close to the viral integration site.
Methods
Here we describe the use of a high-throughput pipeline coupled to the commonly used tissue-specific retroviral RCAS-TVA mouse tumor model system. Utilizing next generation sequencing, we show that retroviral integration sites can be reproducibly detected in malignant stem cell lines generated from RCAS-PDGFB-driven glioma biopsies.
Results
A large fraction of common integration sites contained genes that have been dysregulated or misexpressed in glioma. Others overlapped with loci identified in previous glioma-related forward genetic screens, but several novel putative cancer-causing genes were also found. Integrating retroviral tagging and clinical data, Ppfibp1 was highlighted as a frequently tagged novel glioma-causing gene. Retroviral integrations into the locus resulted in Ppfibp1 upregulation, and Ppfibp1-tagged cells generated tumors with shorter latency upon orthotopic transplantation. In human gliomas, increased PPFIBP1 expression was significantly linked to poor prognosis and PDGF treatment resistance.
Conclusions
Altogether, the current study has demonstrated a novel approach to tagging glioma genes via forward genetics, validating previous results, and identifying PPFIBP1 as a putative oncogene in gliomagenesis.
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Temporomandibular joint prosthesis as treatment option for mandibular condyle fractures: a systematic review and meta-analysis

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The aim of this study was to perform a systematic review of the literature on the temporomandibular joint (TMJ) prosthesis as a treatment option after mandibular condyle fracture. Three databases were searched (PubMed, Embase, Cochrane Library) and 2670 unique papers were identified. A total of 337 studies were included (121 case reports, 89 case series, and 127 cohort/clinical studies). In total 14,396 patients and 21,560 prostheses were described. Of the 127 cohort or clinical studies, 100 (79%) reported inclusion criteria, 54 (43%) reported exclusion criteria, and 96 (76%) reported the inclusion period. (Source: International Journal of Oral and Maxillofacial Surgery)
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