Background: First-time traumatic anterior shoulder dislocation (FASD) is a common trauma associated with shoulder dysfunction. Although several randomized controlled trials have compared conservative and surgical treatments for FASD, the comparative efficacy of these treatments is poorly understood. In this network meta-analysis (NMA), we compared the available evidence on the efficacy of various interventions in patients with FASD.
View Article and Find Full Text PDFIntroduction: Current advances in arthroscopic surgery have led to good outcomes for arthroscopic Bankart repair (ABR) for recurrent anterior shoulder dislocation. However, recent studies have reported recurrence rates of 4%-19% after ABR. In our survey conducted from February 2002 to December 2010, the post-ABR re-dislocation rate was 8.
View Article and Find Full Text PDFBackground: Previous studies have shown good clinical outcomes in patients with irreparable large or massive rotator cuff tears treated using arthroscopic partial repair (APR); however, few studies have evaluated both functional and structural outcomes in these patients.
Purpose: To evaluate both functional and structural outcomes in patients with large or massive rotator cuff tears treated using APR.
Study Design: Case series; Level of evidence, 4.
We report our clinical experience using the modified Cadenat method to treat acromioclavicular joint dislocation, and discuss the usefulness of this method. This study examined 6 shoulders in 6 patients (5 males, 1 female) who were diagnosed with acromioclavicular joint dislocation and treated with the modified Cadenat method at our hospital. Average age at onset was 49.
View Article and Find Full Text PDFAim: Oral intake of nutrients is often compromised in elderly, multimorbid patients, but parenteral nutrition causes intestinal atrophy and impairs intestinal function. To uncover the molecular mechanisms by which amino acids are involved in intestinal atrophy and recovery, we studied whether the rapamycin-sensitive mechanistic target of rapamycin (mTOR) complex 1 (mTORC1) pathway is involved in this process.
Methods: C57BL/6N mice were fed a glucose solution alone, glucose solution with amino acids or normal chow diet for various lengths of time.
The protein Ras homolog enriched in brain (Rheb) is a Ras-like small GTPase that activates the mechanistic target of rapamycin complex 1 (mTORC1), which promotes cell growth. We previously generated transgenic C57BL/6 mice overexpressing Rheb in β-cells (B6(Rheb)), which exhibited increased β-cell size and improved glucose tolerance with higher insulin secretion than wild type C57BL/6 mice. The mice also showed resistance to obesity-induced hyperglycemia, a model of type 2 diabetes, and to multiple low-dose-streptozotocin (MLDS)-induced hyperglycemia, a model of type 1 diabetes (T1D).
View Article and Find Full Text PDFIt is often difficult to diagnose disease in elderly patients, in particular those with dementia, who do not present with typical symptoms. This report describes our experience of an elderly patient (an 83-year-old woman) who presented with a chief complaint of memory loss, showed a marked inflammatory response, and was diagnosed with large-vessel giant cell arteritis (GCA) on the basis of 18F-fluorodeoxyglucose positron emission tomography (FDG-PET) findings. She had no symptoms typical of GCA including jaw claudication, visual field defect and heavy headed feeling.
View Article and Find Full Text PDFAntigen-specific immunotherapy is expected to be an ideal strategy for treating type 1 diabetes (T1D). We investigated the therapeutic efficacy of a peptide in the leader sequence of preproinsulin, which was selected because of its binding affinity to the MHC I-A(g7) molecule. Preproinsulin-1 L7-24 peptide (L7-24) emulsified in Freund's incomplete adjuvant was administered subcutaneously to NOD mice.
View Article and Find Full Text PDFAntigen-specific regulatory CD4(+) T cells have been described but there are few reports on regulatory CD8(+) T cells. We generated islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP)-specific regulatory CD8(+) T cells from 8.3-NOD transgenic mice.
View Article and Find Full Text PDFRegulatory T cells (Tregs) play an important role in immunological self-tolerance and protect the host from autoimmune disease. However, in cancer immunity, Tregs might block anti-tumor immune responses. Therefore, the depletion of Tregs using a specific agent that suppresses its function or population, such as an anti-CD25 antibody, could promote anti-tumor immune responses.
View Article and Find Full Text PDFObjective: Components of insulin/IGF-1 receptor-mediated signaling pathways in pancreatic beta-cells have been implicated in the development of diabetes, in part through the regulation of beta-cell mass in vivo. Studies in vitro have shown that the protein Ras homolog enriched in brain (Rheb) plays a key role as a positive upstream regulator of the mammalian target of rapamycin complex 1 (mTORC1) pathway in integrating inputs from nutrients and growth factors for cell growth. Our objective was to investigate the role of the mTORC1 pathway in the regulation of beta-cell mass in vivo.
View Article and Find Full Text PDFCD4(+)CD25(+) T cells (Tregs) play a critical role in maintaining dominant peripheral tolerance, and pathogenic autoreactive T cells may be frequent in the CD25-negative fraction of peripheral blood mononuclear cells (PBMCs) from patients with autoimmune disease. We therefore investigated whether T cell autoimmune responses to recombinant GAD65 can be detected by the use of ELISPOT assay in the CD25-negative fraction of PMBCs from Japanese type 1 diabetes (T1D) patients. The frequency of CD4(+)CD25(+) T cells was not different among patients with newly developed T1D, established T1D, and healthy controls.
View Article and Find Full Text PDFInsulin has been reported as a major autoantigen in both human and murine type 1 diabetes (T1D). Insulin1-knockout NOD mice with only insulin2 are protected against the development of autoimmune diabetes, suggesting that insulin1 has strong immunogenicity and insulin2 has weak immunogenicity or a possible protective role in the pathogenesis of type 1 diabetes. In this study, we have developed fiber-mutant adenovirus vectors that express murine proinsulin1 or proinsulin2 (named Ad.
View Article and Find Full Text PDFType 1 diabetes (T1D) is caused mostly by autoimmune destruction of pancreatic beta-cells, the precise mechanism of which remains unclear. Two major effector mechanisms have been proposed: direct cell-mediated and indirect cytokine-mediated cytotoxicity. Cytokine-mediated beta-cell destruction is presumed mainly caused by NO production.
View Article and Find Full Text PDFWarfarin has been used as an anticoagulant for a long time. Recently, the pleiotropic effect of warfarin has been investigated. As low-dose warfarin has been reported to have anti-inflammatory effect through suppression of IL-6 secretion and inhibit the immune-associated signal between Tyro3 and its ligand, Gas6, the effect of low-dose warfarin on autoimmune diabetes in NOD mice was examined.
View Article and Find Full Text PDFHypoxia-inducible transcription factor 1 (HIF-1), consisting of HIF-1 alpha and HIF-1 beta subunits, regulates the expression of a variety of genes involved in diverse adaptive processes in response to hypoxia. While oxygen availability regulates HIF-1 alpha by proteolytic degradation, some growth factors regulate HIF-1 alpha by protein synthesis in part through mammalian target of rapamycin complex 1 (TORC1) pathway. We herein report the role of nutrient availability on the regulation of HIF-1.
View Article and Find Full Text PDFInsulinB:9-23 peptide (insB:9-23) reactive T cells has been reported as crucial for type 1 diabetes. In this study, experimental autoimmune diabetes (EAD) mice, which subcutaneous immunization of ins1 or 2B:9-23 induced autoimmune diabetes in F1(B7.1B6 x BALB/c), was investigated for antigen specific therapy to delete pathogenic T cells.
View Article and Find Full Text PDFPancreatic islet transplantation has the potential to maintain normoglycemia in patients with established type 1 diabetes, thereby obviating the need for frequent insulin injections. Our previous study showed that recombinant IL-12p40-producing islets prevented the recurrence of NOD diabetes. First, to see which immunomodulating molecule-secreting islet grafts can most powerfully prevent diabetes development in NOD mice without immunosuppressant, NOD islets were transfected with one of the following adenoviral vectors: Ad.
View Article and Find Full Text PDFA replication-competent adenoviral vector deficient for expression of the early E1B55K protein has been applied in clinical studies. The vector, however, was not fully effective for the treatment of human cancer. In this study, the E1A gene (which encodes an Rb-binding domain protein) of the adenoviral vector AxE1AdB was further engineered with a point mutation designed to abolish binding to Rb protein (pRb) and arrest the cell cycle (AxdAdB-3).
View Article and Find Full Text PDF'Fulminant diabetes' has been recognized as a super-acute onset and non-autoimmune type 1 diabetes. To evaluate autoimmunity against pancreatic beta cell in fulminant diabetes, ELISPOT assay was applied to the peripheral blood of these patients. In our ELISPOT system, GAD65-reactive and insulin B9-23-reactive IFN-gamma spots were detected in 46.
View Article and Find Full Text PDFRodents have two functional preproinsulin genes named insulin 1 and insulin 2 on different chromosome and have two amino acid differences in insulin B chain. We have established insulin 1 or insulin 2 knockout (KO) non-obese diabetic (NOD) colonies in the animal institute of Kobe University and evaluated anti-insulin autoimmunity. Similar to the previous report, insulin 1-KO provides strong protection from insulitis (islet-infiltration of mononuclear cells) and diabetes, whereas the insulin 2-KO markedly accelerated insulitis and development of diabetes even at further backcross breeding with NOD/Shi/Kbe mice (P<0.
View Article and Find Full Text PDFA number of studies and clinical case reports have implicated interferon (IFN)-alpha as a potential mediator of type 1 diabetes pathogenesis. Administration of polyinosinic:polycytidylic acid (poly I:C), a mimic of viral double-stranded RNA, induces diabetes in C57BL/6 mice expressing the B7.1 costimulatory molecule in islets.
View Article and Find Full Text PDFA fundamental question about the pathogenesis of spontaneous autoimmune diabetes is whether there are primary autoantigens. For type 1 diabetes it is clear that multiple islet molecules are the target of autoimmunity in man and animal models. It is not clear whether any of the target molecules are essential for the destruction of islet beta cells.
View Article and Find Full Text PDFWe hypothesize that NOD mice without native insulin, but with an altered insulin B:9-23 sequence, will be completely protected from diabetes/insulitis if insulin B:9-23 is an essential T cell epitope. To investigate this hypothesis, we have established initial insulin 1- and 2-negative NOD mice with a transgene directing production of preproinsulin with alanine at position B:16 rather than the native tyrosine of both insulin 1 and insulin 2. Sets of primers for PCR-based assays have been created and validated.
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