Tatsuya Nakano

ORCID: 0000-0002-8451-1769
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Reproductive Biology and Fertility
  • Prenatal Screening and Diagnostics
  • Advanced Radiotherapy Techniques
  • Assisted Reproductive Technology and Twin Pregnancy
  • Gastrointestinal disorders and treatments
  • Gastrointestinal Tumor Research and Treatment
  • Renal and related cancers
  • Lung Cancer Research Studies
  • Genomic variations and chromosomal abnormalities
  • ZnO doping and properties
  • Reproductive Health and Technologies
  • Radiation Therapy and Dosimetry
  • Image Enhancement Techniques
  • Head and Neck Cancer Studies
  • Sperm and Testicular Function
  • Genetic Syndromes and Imprinting
  • Metastasis and carcinoma case studies
  • Effects of Radiation Exposure
  • Pluripotent Stem Cells Research
  • Medical Imaging and Pathology Studies
  • Adipose Tissue and Metabolism
  • Gastric Cancer Management and Outcomes
  • Esophageal Cancer Research and Treatment
  • Birth, Development, and Health
  • Cancer Diagnosis and Treatment

Columbia University Irving Medical Center
2024

Iwate Prefectural Central Hospital
2003-2024

Futaba clinic
2013-2024

Chubu National Hospital
2021-2024

Tokyo City University
2024

National Hospital Organization Mito Medical Center
2024

Kindai University
2014-2021

Gunma University Hospital
2010-2017

Tohoku University
1994-2016

Osaka City University Hospital
2013

There are two independent serotonin (5-HT) systems of organization: one in the central nervous system and other periphery. 5-HT affects feeding behavior obesity system. On hand, peripheral also may play an important role obesity, as it has been reported that regulates glucose lipid metabolism. Here we show intraperitoneal injection to mice inhibits weight gain, hyperglycemia insulin resistance completely prevented enlargement intra-abdominal adipocytes without having any effect on food...

10.1371/journal.pone.0147143 article EN cc-by PLoS ONE 2016-01-14

The large dose gradients in brachytherapy necessitate a detector with small active volume for accurate dosimetry. dosimetric performance of novel scintillation (BrachyFOD™) is evaluated and compared to three commercially available detectors, diamond detector, MOSFET, TLDs. An HDR source used measure the depth dependence, angular temperature dependence detectors. Of was found be most accurate, but has physical size. TLDs cannot provide real time readings have dependent sensitivity. MOSFET...

10.1118/1.2727248 article EN Medical Physics 2007-04-25

To evaluate the efficacy and safety of carbon‐ion radiotherapy for non‐squamous cell carcinoma head neck, 35 patients were enrolled in this prospective study. The primary end‐point was 3‐year local control rate, secondary end‐points included overall survival rate adverse events. Acute late events evaluated according to Common Terminology Criteria Adverse Events, version 4.0. median follow‐up time all 39 months. Thirty‐two three received 64.0 Gy (relative biological effectiveness) 57.6 16...

10.1111/cas.13325 article EN cc-by-nc-nd Cancer Science 2017-07-21

To assess the developmental competence of human embryos with multinucleation (MN).Experimental study.Private fertility center.Forty-four couples donating 143 zygotes for confocal imaging study, and 78 included in retrospective clinical study.Time-lapse study using light microscopes.Cytokinesis at first mitosis, MN, chromosomal behavior, euploidy, implantation, successful delivery healthy baby.About 25% showed abnormal cytokinesis (n = 34). All their development was greatly impaired. More...

10.1016/j.fertnstert.2016.03.025 article EN publisher-specific-oa Fertility and Sterility 2016-04-09

In mice, peripheral 5-HT induces an increase in the plasma concentrations of glucose, insulin and bile acids, a decrease triglyceride, NEFA cholesterol concentrations. However, given unique characteristics metabolism ruminants relative to monogastric animals, physiological role on glucose lipid sheep remains be established. Therefore, this study, we investigated effect circulating metabolites using five receptor (5HTR) antagonists sheep. After fasting for 24 h, were intravenously injected...

10.1371/journal.pone.0088058 article EN cc-by PLoS ONE 2014-02-04

Although it is not a well-established technology, oocyte cryopreservation becoming prevalent in assisted reproductive technologies response to the growing demands of patients' sociological and pathological conditions. Oocyte can adversely affect developmental potential oocytes by causing an increase intracellular oxidative stresses damage mitochondrial structure. In this study, we studied whether autologous adipose stem cell (ASC) mitochondria supplementation with vitrified warmed could...

10.3390/biom12071008 article EN cc-by Biomolecules 2022-07-21

A potential real-time source position verification process for high dose-rate (HDR) brachytherapy treatment is described. This intended to provide immediate confirmation that a proceeding according plan, so corrective action can be taken if necessary. We show three dosimeters are in principle sufficient and demonstrate the feasibility of using diamond detector an Ir-192 source. An error analysis including all identified sources shows this capable locating distance within 2 mm distances up 12...

10.1088/0031-9155/48/14/307 article EN Physics in Medicine and Biology 2003-07-02

The present study aims to examine the effects of use two kinds somatic cells from a single adult cow on fusion rate, cleavage developmental rate into blastocysts nuclear transplant oocytes, and pregnancy potential reconstituted blastocysts. Oviductal epithelial mammary gland Jersey with milking record were used in experiment. No significant differences observed vitro criteria described above between cell types as source donor nucleus. Although pregnancies obtained both types, live calves...

10.2508/chikusan.70.243 article EN Nihon Chikusan Gakkaiho 1999-01-01

Independent treatment verification for high dose rate (HDR) brachytherapy is needed to ensure that the proceeds as prescribed. In this paper, we investigate feasibility of a proposed real-time source position process. This process provides immediate confirmation during treatment, so can be aborted and modified if necessary. We show an array dosimeters placed on patient's skin independently verify in three dimensions. was demonstrated by using diamond detector several locations surface...

10.1088/0031-9155/50/2/010 article EN Physics in Medicine and Biology 2005-01-07

Cytogenetic information about the product of conception (POC) is important to determine presence recurrent chromosomal abnormalities that are an indication for preimplantation genetic testing aneuploidy or structural rearrangements. Although microscopic examination by G-staining has long been used such evaluation, detection failures relatively common with this method, due cell-culture-related issues. The utility low-coverage whole-genome sequencing (lcWGS) using short-read next-generation...

10.3390/genes15081100 article EN Genes 2024-08-21

To retrospectively evaluate the effectiveness of PGT-SR by array comparative genomic hybridization (aCGH) or next-generation sequencing (NGS) in preventing recurrent miscarriages.

10.1002/rmb2.12476 article EN Reproductive Medicine and Biology 2022-01-01

Since chromosomal abnormalities can be detected in more than half of miscarriages, cytogenetic testing the product conception (POC) provide important information when preparing for a subsequent pregnancy. Conventional karyotyping is common diagnostic method POC but problematic due to need cell culture.

10.1002/rmb2.12449 article EN cc-by Reproductive Medicine and Biology 2022-01-01

手術侵襲に対する過大な生体反応の制御を目的に, 食道癌手術症例に対し手術開始2~3時間前にmethylprednisolone 250mg/bodyを投与 (B群: n=8) し, コントロール群 (A群: n=9) と比較検討した. 心係数・平均肺動脈圧・肺動脈楔入圧の変動に差はなかったが, 体重・水分1次出納はB群で1日早く回復した. 術後頻拍はB群で有意に制御され, 不整脈の発生もB群で少ない傾向であった. A群で術後著増したIL-6やG-CSFはB群では有意に産生が抑制され, 尿中カテコールアミン排泄量もB群で著減した. 耐糖能異常・術後感染・縫合不全などステ古ィド剤の副作用は術後みられず, 術後のリンパ球数減少もB群で抑えられた. したがって, 術前ステロイド投与は食道癌手術侵襲に対する過大な生体反応を主に循環系の面で抑制し, 不整脈などの合併症発生を減少させうることが示唆され, 胸部食道癌手術後の患者管理において非常に有用と考えられた.

10.5833/jjgs.27.841 article EN cc-by-nc The Japanese Journal of Gastroenterological Surgery 1994-01-01

症例は84歳の男性で, 不明熱として発症して約2カ月後に消化管穿孔による腹膜炎のため緊急開腹手術となった. 小腸未分化癌の壊死穿孔による腹膜炎で, 広範囲にリンパ節転移を認めた. 術後25日で退院したが, 術後39日目に発熱を伴う癌性腹膜炎の状態で再入院し, 術後45日目に死亡した. 小腸未分化癌は病理組織学的にも診断は困難であり, 悪性リンパ腫やgastrointestinal stromal tumor, 平滑筋肉種などの間葉系腫瘍と鑑別する必要がある. 今回の症例は免疫染色によりCK-CAM5.2, vimentinが陽性であったことから未分化癌と診断しえた. 小腸未分化癌は症状が多彩で早期診断が困難と思われる. 本症例の経過からも不明熱は初期症状の一つとして念頭におく必要があると思われた.

10.3919/jjsa.68.2543 article EN Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) 2007-01-01

Methylglyoxal (MG) is a precursor for the generation of endogenous advanced glycation end-products involved in various diseases, including infertility. The present study evaluated motility and developmental competence after vitro fertilization mouse sperm which were exposed to MG capacitation medium 1.5 h. Sperm was analyzed using an SQA-V automated quality analyzer. Intracellular reactive oxygen species (ROS), membrane integrity, mitochondrial potential, DNA damage assessed flow cytometry....

10.1262/jrd.2020-150 article EN cc-by-nc-nd Journal of Reproduction and Development 2021-01-01

Direct measurements of seven highly exposed workers at the Tokyo Electric Power Company Fukushima Daiichi Nuclear Station accident have been performed continuously since June 2011. Caesium clearance in monitored is agreement with biokinetic models proposed by International Commission on Radiological Protection. After 500 d from initial measurement, however, caesium slowed. It was thought to be unlikely that additional Cs intake had occurred after intake, as activity foods kept low. And,...

10.1093/rpd/ncw036 article EN Radiation Protection Dosimetry 2016-03-14

Introduction: In the last few decades, considerable progress has been made in controlling surgical site infections (SSIs) using a combination of mechanical and oral antibiotic bowel preparation. However, number bacteria present after preparation not clarified. this study, we investigated bacterial cultures intestinal fluid samples from patients undergoing laparoscopic surgery for colorectal cancer preoperative Methods: This prospective observational study was designed as pilot at single...

10.7759/cureus.52959 article EN Cureus 2024-01-25

10.1109/iecon55916.2024.10905470 article EN IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society 2024-11-03

血液透析 (HD) 患者の低Alb血症に対する舌訓練の有効性を検討した. 舌圧が健常人の平均値と比較して100%未満かつAlb 3.8g/dL未満のHD患者を対象に, トレーニング器具 (ペコぱんだ®) を用いて5回3セット/回を1日3回, 週3回以上の舌訓練を指示して2か月間追跡した. 18名中, 指示を遵守できたのは12名 (男性8名, 女性4名, 72.3±10.5歳) であった. 訓練開始前後, 舌圧 (前: 22.5±6.9kPa vs. 後: 33.1±6.8kPa, p<0.01), Alb (3.58±0.20g/dL 3.73±0.29g/dL, p<0.05) に有意な差を認めた. また, 舌圧変化量とCRP変化量において有意な負の相関 (r=−0.581, を認めた. 本研究では, 炎症反応の低下とともにAlbと舌圧の上昇を認めた.

10.4009/jsdt.50.547 article EN Nihon Toseki Igakkai Zasshi 2017-01-01
Coming Soon ...