216 results match your criteria: "Niigata University Graduate School of Medicine[Affiliation]"

Background: Anterior cruciate ligament (ACL) injury often leads to symptoms of instability, which may cause meniscus injury, osteochondral lesions, and degenerative changes. For thorough evaluation of the effects of abnormal motion of ACL-deficient (ACLD) knees on the meniscus and articular cartilage, it is necessary to assess tibiofemoral motion in the medial and lateral compartments separately. Our aim was to determine if in vivo three-dimensional (3D) dynamic motion of ACLD knees differs from that of contralateral uninjured knees by assessing knee motion in the medial and lateral compartments respectively.

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Background: Endometrial cancer arising in adenomyosis (EC-AIA) is a rare entity of endometrial cancer, and its clinical significance has not been well studied. This study aimed to examine the tumor characteristics and survival outcomes of EC-AIA.

Methods: An exploratory analysis was performed to compare EC-AIA and historical control cases.

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Impact of a novel homozygous mutation in nicotinamide nucleotide transhydrogenase on mitochondrial DNA integrity in a case of familial glucocorticoid deficiency.

BBA Clin

June 2015

Department of Molecular Biosciences, University of California Davis, Davis, CA 95616, USA ; Medical Investigations of Neurodevelopmental Disorders (M. I. N. D.) Institute, University of California Davis, Sacramento, CA 95616.

Background: Familial Glucocorticoid Deficiency (FGD) is a rare autosomal recessive disorder that is characterized by isolated glucocorticoid deficiency. Recently, mutations in the gene encoding for the mitochondrial nicotinamide nucleotide transhydrogenase (NNT) have been identified as a causative gene for FGD; however, no NNT activities have been reported in FGD patients carrying NNT mutations.

Methods: Clinical, biochemical and molecular analyses of lymphocytes from FDG homozygous and heterozygous carriers for the F215S NNT mutation.

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A Perforator Model as an Aid to Elevate Deep Inferior Epigastric Perforator Flap.

Plast Reconstr Surg Glob Open

July 2015

Department of Plastic Surgery, Hyogo College of Medicine, Mukogawa, Nishinomiya, Hyogo, Japan; and Division of Plastic and Reconstructive Surgery, Niigata University Graduate School of Medicine, Asahimachi-Dori, Chuo-ku, Niigata, Japan.

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Background: We compared survival outcomes and risk of venous thromboembolism (VTE) among patients with advanced and early-stage ovarian clear cell carcinoma (OCCC) and serous ovarian carcinoma (SOC), as well as potential links with interleukin-6 (IL-6) levels.

Methods: A multicenter case-control study was conducted in 370 patients with OCCC and 938 with SOC. In a subset of 200 cases, pretreatment plasma IL-6 levels were examined.

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Vein/Arterial Grafts Harvested within the Incision for a Free Groin Flap.

Plast Reconstr Surg Glob Open

June 2015

Department of Plastic and Reconstructive Surgery, Niigata University Graduate School of Medicine, Niigata, Japan; Department of Plastic and Reconstructive Surgery, Osaka University Graduate School of Medicine, Osaka, Japan; and Department of Plastic and Reconstructive Surgery, Toho University Sakura Medical Center, Chiba, Japan.

The free groin flap results in less donor-site morbidity than other skin flaps and is suitable for use in children and adolescents. However, the vascular pedicle is relatively short and vessel diameter is small, which makes vascular anastomosis technically difficult. To overcome this limitation, we harvested vein and arterial grafts from the flap elevation area without placing additional skin incisions.

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Unlabelled: Human T-cell leukemia virus type 1 (HTLV-1) is associated with adult T-cell leukemia (ATL) and transforms T cells in vitro. To our knowledge, the functional role of reactive oxygen species (ROS)-generating NADPH oxidase 5 (Nox5) in HTLV-1 transformation remains undefined. Here, we found that Nox5α expression was upregulated in 88% of 17 ATL patient samples but not in normal peripheral blood T cells.

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Introduction: Recently, direct-acting oral anticoagulants (DOACs) have been introduced, with increasing use in patients with non-valvular atrial fibrillation (NVAF). However, warfarin continues to be widely used and the benefits and risks of warfarin in NVAF patients warrant closer inspection.

Materials And Methods: Thromboembolism, major hemorrhage, and total and cardiovascular mortalities were analyzed in 7,406 NVAF patients in the J-RHYTHM Registry from January to July 2009, prior to DOAC introduction.

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Background: Anemia associated with high mortality is a common complication of chronic kidney disease (CKD). Target hemoglobin (Hb) levels for CKD treatment remain controversial: Recent guidelines recommend a maximum of 13 g/dL to avoid increased risk of CVD. However, some smaller studies show slower progression of renal function loss with high Hb targets.

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Background: Multiple-branch reconstruction is required in order to attain facial reanimation for extensive facial nerve defects. We previously reported that end-to-side nerve grafting, with the use of a single nerve graft for defect reconstruction, was easy to perform. We have also demonstrated the efficacy of end-to-side nerve suture of the recipient nerve to the donor graft nerve, in experimental rat models and clinical cases.

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Progressive supranuclear palsy (PSP) is a four-repeat tauopathy with tau-positive, argyrophilic tuft-shaped astrocytes (TAs). We performed a pathological and clinical investigation in 40 consecutive autopsied Japanese patients with pathological diagnoses of PSP or PSP-like disease. Unequivocal TAs were present in 22 cases, all of which were confirmed to be PSP.

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Free perivascular tissue flap transfer.

J Plast Reconstr Aesthet Surg

July 2015

Department of Plastic and Reconstructive Surgery, Osaka University Graduate School of Medicine, Osaka, Japan.

Local flaps and composite grafting are the procedures of choice for reconstructing relatively small soft tissue defects. However, despite their limited conveyable volume, local flaps sometimes require a wide dissection area and long new incisions. Composite grafts also have serious limitations and require a well-vascularized recipient bed.

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We investigated the incidence of hip fracture in a population of patients ≥50 years old in 2004 and 2010 in Niigata City, Niigata Prefecture, Japan. We also investigated the long-term trends in the incidence of hip fracture from 1985 to 2010, using our previously reported survey results obtained from 1985 to 1999. In 2004 and 2010, the survey found 2,368 and 3,218 proximal femur fractures, respectively.

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Apparent diffusion coefficients distinguish amyotrophic lateral sclerosis from cervical spondylotic myelopathy.

Clin Neurol Neurosurg

May 2015

Department of Neurology, Brain Research Institute, Niigata University, 1-757 Asahimachi-dori, Chuo-ku, Niigata-City, Niigata 951-8585, Japan. Electronic address:

Objective: Fifty percent of patients with amyotrophic lateral sclerosis (ALS) have cervical spondylotic myelopathy (CSM) as a complication. Because patients with ALS do not develop bulbar signs and symptoms at onset, differentiating them from patients with CSM is sometimes difficult. We aimed to determine whether the apparent diffusion coefficients (ADCs) of intracranial corticospinal tracts can be used to distinguish between patients with ALS and those with CSM.

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In normal human T cells, telomerase activity is strictly regulated. T cells are thought to express telomerase to avoid replicative senescence, unlike most normal somatic cells with definite replicative lifespan. T cells in blood and tissues are usually in a state of quiescence without expression of the limiting catalytic subunit of telomerase, human telomerase reverse transcriptase (hTERT).

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The tumour necrosis factor (TNF)-α-induced proteins (TNFAIP)9 and TNFAIP3 play an important pathogenic role in murine arthritis. To clarify their pathophysiological roles in patients with rheumatoid arthritis (RA), we examined their expression and localization in peripheral blood mononuclear cells (PBMC). TNFAIP9 and TNFAIP3 mRNA expression was determined in PBMC of RA patients and healthy subjects (control).

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Eyebrow reconstruction using a composite skin graft from sideburns.

Plast Reconstr Surg Glob Open

January 2015

Division of Plastic and Reconstructive Surgery, Niigata University Graduate School of Medicine, Niigata, Japan; and Department of Plastic and Reconstructive Surgery, Osaka University Graduate School of Medicine, Osaka, Japan.

Wide resection of malignant skin tumors in the upper orbital region often results in soft-tissue defects involving the eyebrow. We used composite skin grafts from the area around the sideburns for 1-stage reconstruction of skin and eyebrow defects. The results were aesthetically satisfying because the hair and shape of these regions were similar to those of the original eyebrow, and donor-site closure was easy with inconspicuous scar.

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Covering implantable left ventricular assist device (DuraHeart) with free flap.

J Artif Organs

June 2015

Division of Plastic and Reconstructive Surgery, Niigata University Graduate School of Medicine, 1-757, Asahimachi-Dori, Chuo-ku, Niigata, 951-8510, Japan,

Severe donor shortage in Japan makes the waiting period for heart transplantation extremely long and the left ventricular assist devices (LVADs) are often used for bridge-to-transplant. We present three cases of infected and exposed DuraHeart LVAD system treated with free flaps. Four free flaps (two latissimus flaps and two anterolateral thigh flaps) were transferred using the right internal thoracic vessels or left deep inferior epigastric vessels as recipients.

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Background And Objectives: Megalin is highly expressed at the apical membranes of proximal tubular epithelial cells. A urinary full-length megalin (C-megalin) assay is linked to the severity of diabetic nephropathy in type 2 diabetes. This study examined the relationship between levels of urinary C-megalin and histological findings in adult patients with IgA nephropathy (IgAN).

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Survival outcome of stage I ovarian clear cell carcinoma with lympho-vascular space invasion.

Gynecol Oncol

February 2015

Gynecologic Oncology, MD-Anderson Cancer Center, University of Texas, Houston, TX, USA; Center for RNA Interference and Non-Coding RNA, University of Texas, Houston, TX, USA.

Background: The clinical impact of lympho-vascular space invasion (LVSI) in early-stage ovarian clear cell carcinoma (OCCC) is not well understood. Given the distinct tumor biology and survival patterns of OCCC, the significance of LVSI on survival outcome and treatment response was examined in OCCC.

Methods: A multicenter study was conducted to examine stage IA-IC3 OCCC cases that underwent primary surgical staging including lymphadenectomy.

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We report here the first draft genome sequence of Mycobacterium kyorinense, which was described in 2009 and exhibits significant pathogenicity to humans.

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Comprehensive next-generation sequencing analyses of hypoparathyroidism: identification of novel GCM2 mutations.

J Clin Endocrinol Metab

November 2014

Department of Pediatrics (T.M., S.N., M.I., T.H.), Keio University School of Medicine, Tokyo 160-8582, Japan; Division of Pediatrics (K.N.), Department of Homeostatic Regulation and Development, Niigata University Graduate School of Medicine and Dental Sciences, Niigata 951-8510, Japan; Department of Pediatrics (M.N.), Tokyo Metropolitan Ohtsuka Hospital, Tokyo 170-8476, Japan; and Department of Pediatrics (G.S.), Tokyo Dental College Ichikawa General Hospital, Chiba 272-8513, Japan.

Context: In most patients with hypoparathyroidism (HP), the etiology is not defined clinically. Eight genes (AIRE, CASR, CLDN16, GATA3, GCM2, PTH, TBCE, and TRPM6) are known to be responsible genes associated with HP; however, no previous study has screened the eight responsible genes comprehensively in HP patients.

Objectives: This study was conducted to determine the genetic defect in HP patients.

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Change in tibiofemoral rotational alignment during total knee arthroplasty.

J Orthop Sci

July 2014

Division of Orthopaedic Surgery, Department of Regenerative and Transplant Medicine, Niigata University Graduate School of Medicine and Dental Sciences, Niigata, Japan,

Background: Rotational mismatch between femoral and tibial components has been recognized as a risk factor of unsuccessful total knee arthroplasty (TKA), but a main cause of rotational mismatch is uncertain. This study aims to evaluate rotational alignment of the knee by measuring both component rotation and version of the knee in TKA.

Method: Fifty-one TKAs (mean age 73.

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