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https://www.readbyqxmd.com/read/28097410/intercostal-trocars-enable-easier-laparoscopic-resection-of-liver-tumors-in-segments-7-and-8
#1
Fumitoshi Hirokawa, Michihiro Hayashi, Mitsuhiro Asakuma, Tetsunosuke Shimizu, Yoshihiro Inoue, Kazuhisa Uchiyama
BACKGROUND: Laparoscopic resection of posterosuperior (PS) tumors of the liver is more difficult than that of anterolateral (AL) tumors, owing to the narrow surgical field in the PS location. In this retrospective cohort study, our aim was to determine if port insertion through the intercostal space would lead to improved outcomes for laparoscopic resection of tumors in PS liver segments 7 and 8. METHOD: Between January 2006 and December 2015, 153 patients underwent laparoscopic resection of solitary liver tumors at Osaka Medical College Hospital...
January 17, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28090072/reconsideration-of-inferior-vena-cava-parameters-for-estimating-right-atrial-pressure-in-an-east-asian-population%C3%A3-comparative-simultaneous-ultrasound-catheterization-study
#2
Takayuki Kawata, Masao Daimon, Seitetsu L Lee, Koichi Kimura, Naoko Sawada, Shuo-Ju Chiang, Keitaro Mahara, Takeshi Okubo, Tomoko Nakao, Megumi Hirokawa, Boqing Xu, Tomoko S Kato, Masafumi Watanabe, Yutaka Yatomi, Issei Komuro
BACKGROUND: Ultrasound measurements of the inferior vena cava (IVC) diameter (IVCD), together with its respiratory variation, provide a noninvasive estimate of right atrial pressure (RAP). However, there is a paucity of studies that have compared this technique with simultaneous catheterization. We explored the best cut-off values of IVC parameters for elevated RAP in comparison with RAP measured by catheterization.Methods and Results:We prospectively enrolled 120 East Asian patients who were scheduled for catheterization...
January 13, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28047496/su-g-brb-17-dosimetric-evaluation-of-the-respiratory-interplay-effect-during-vmat-delivery-using-ipagat-polymer-gel-dosimeter
#3
K Ono, S Fujimoto, S Hayashi, K Hioki, M Miyazawa, Y Akagi, Y Hirokawa
PURPOSE: To evaluate the dosimetric impact of the interplay effect between multileaf collimator (MLC) movement and tumor respiratory motion during delivery of volumetric modulate arc therapy (VMAT) by using customized polymer gel dosimeter. METHODS: Polyacrylamide-based gel dosimeter contained magnesium chloride as a sensitizer (iPAGAT) was used in this study. An excellent gas barrier PAN (BAREX) techno bottle (φ8 cm, 650 mL) filled with iPAGAT was set to the QUASAR™ respiratory motion phantom, and was moved with motion amplitudes of 1 and 2 cm with a 4 second period during VMAT delivery by the Novalis Tx linear accelerator (Varian/BrainLAB)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28041619/simultaneous-determination-of-aliphatic-aromatic-and-heterocyclic-biogenic-amines-without-derivatization-by-capillary-electrophoresis-and-application-in-beer-analysis
#4
Lili He, Zhongqi Xu, Takeshi Hirokawa, Li Shen
Biogenic amines (BAs) play significant roles in indicating human health or food quality. Aiming to simultaneously determine three structures (aliphatic, aromatic and heterocyclic) of underivatized BAs, we explored a simple and rapid capillary electrophoresis (CE) method only coupled with conventional UV detector for the separation of thirteen key BAs. The strategy is to choose a UV absorbing probe as co-ion in the background electrolyte (BGE), and different BAs could be characterized by positive or negative peaks according to the fact that their UV absorptivity coefficients at a certain wavelength are better or worse than that of the UV absorbing probe...
December 24, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28025493/analysis-to-estimate-genetic-variations-in-the-idarubicin-resistant-derivative-molt-3
#5
Tomoyoshi Komiyama, Atsushi Ogura, Takatsugu Hirokawa, Miao Zhijing, Hiroshi Kamiguchi, Satomi Asai, Hayato Miyachi, Hiroyuki Kobayashi
Gene alterations are a well-established mechanism leading to drug resistance in acute leukemia cells. A full understanding of the mechanisms of drug resistance in these cells will facilitate more effective chemotherapy. In this study, we investigated the mechanism(s) of drug resistance in the human acute leukemia cell line MOLT-3 and its idarubicin-resistant derivative MOLT-3/IDR through complete mitochondrial and nuclear DNA analyses. We identified genetic differences between these two cell lines. The ND3 mutation site (p...
December 22, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28024406/the-effect-of-conformational-flexibility-on-binding-free-energy-estimation-between-kinases-and-their-inhibitors
#6
Mitsugu Araki, Narutoshi Kamiya, Miwa Sato, Masahiko Nakatsui, Takatsugu Hirokawa, Yasushi Okuno
Accurate prediction of binding affinities of drug candidates to their targets remains challenging because of protein flexibility in solution. Conformational flexibility of the ATP-binding site in the CDK2 and ERK2 kinases was identified using molecular dynamics simulations. The binding free energy (ΔG) of twenty-four ATP-competitive inhibitors toward these kinases was assessed using an alchemical free energy perturbation method, MP-CAFEE. However, large calculation errors of 2-3 kcal/mol were observed using this method, where the free energy simulation starts from a single equilibrated conformation...
December 27, 2016: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28018495/postoperative-venous-thromboembolism-in-patients-undergoing-endovenous-laser-and-radiofrequency-ablation-of-the-saphenous-vein
#7
Nobuhisa Kurihara, Masayuki Hirokawa, Takashi Yamamoto
Objective: Endovenous laser ablation (EVLA) and radiofrequency ablation (RFA) are safe and effective treatments for varicose veins caused by saphenous reflux. Deep venous thrombosis (DVT) and endovenous heat-induced thrombosis (EHIT) are known complications of these procedures. The purpose of this article is to investigate the incidence of postoperative DVT and EHIT in patients undergoing EVLA and RFA. Methods: The patients were assessed by clinical examination and venous duplex ultrasonography before operation and at 24-72 hours, 1 month, and 1 year follow-up after operation...
2016: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/27998670/improvement-of-1-3-propanediol-production-using-an-engineered-cyanobacterium-synechococcus-elongatus-by-optimization-of-the-gene-expression-level-of-a-synthetic-metabolic-pathway-and-production-conditions
#8
Yasutaka Hirokawa, Yuki Maki, Taizo Hanai
The introduction of a synthetic metabolic pathway consisting of multiple genes derived from various organisms enables cyanobacteria to directly produce valuable chemicals from carbon dioxide. We previously constructed a synthetic metabolic pathway composed of genes from Escherichia coli, Saccharomyces cerevisiae, and Klebsiella pneumoniae. This pathway enabled 1,3-propanediol (1,3-PDO) production from cellular DHAP via glycerol in the cyanobacterium, Synechococcus elongatus PCC 7942. The production of 1,3-PDO (3...
January 2017: Metabolic Engineering
https://www.readbyqxmd.com/read/27990564/planarian-cholinesterase-in-vitro-characterization-of-an-evolutionarily-ancient-enzyme-to-study-organophosphorus-pesticide-toxicity-and-reactivation
#9
Danielle Hagstrom, Hideto Hirokawa, Limin Zhang, Zoran Radic, Palmer Taylor, Eva-Maria S Collins
The freshwater planarian Dugesia japonica has recently emerged as an animal model for developmental neurotoxicology and found to be sensitive to organophosphorus (OP) pesticides. While previous activity staining of D. japonica, which possess a discrete cholinergic nervous system, has shown acylthiocholine catalysis, it is unknown whether this is accomplished through an acetylcholinesterase (AChE), butyrylcholinesterase (BChE), or a hybrid esterase and how OP exposure affects esterase activity. Here, we show that the majority of D...
December 18, 2016: Archives of Toxicology
https://www.readbyqxmd.com/read/27956273/high-endothelial-venule-like-vessels-and-lymphocyte-recruitment-in-diffuse-sclerosing-variant-of-papillary-thyroid-carcinoma
#10
Shulin Low, Yasuhiro Sakai, Hitomi Hoshino, Mitsuyoshi Hirokawa, Hiroto Kawashima, Kayoko Higuchi, Yoshiaki Imamura, Motohiro Kobayashi
Diffuse sclerosing variant of papillary thyroid carcinoma (DSPTC) is a rare subtype of papillary thyroid carcinoma with a high incidence of lymph node metastasis. One of its characteristic histological features is the presence of dense lymphocyte infiltrates; however, how these lymphocytes are recruited in this pathological setting remains unclear. Here, we analysed 17 DSPTC cases immunohistologically for cell adhesion molecules expressed on endothelial cells. We found that venules morphologically similar to high endothelial venules (HEVs) in secondary lymphoid organs were induced in lymphoid aggregates in DSPTC, and such HEV-like vessels expressed 6-sulfo sialyl Lewis X (sLeX) glycans as well as intercellular adhesion molecule 1 (ICAM-1)...
December 2016: Pathology
https://www.readbyqxmd.com/read/27936243/can-wound-exudate-from-venous-leg-ulcers-measure-wound-pain-status-a-pilot-study
#11
Taichi Goto, Nao Tamai, Gojiro Nakagami, Aya Kitamura, Ayumi Naito, Masayuki Hirokawa, Chisako Shimokawa, Kazuo Takahashi, Junichi Umemoto, Hiromi Sanada
We investigated the associations between the self-evaluated pain status and two pain biomarker candidates, nerve growth factor and S100A8/A9, in exudate from venous leg ulcer to finally develop an objective pain evaluation method. Patients with venous leg ulcer participated in this cross-sectional observational study conducted between April and October 2014 at two medical facilities. During routine wound care, each participant self-evaluated their pain status at each examination using the 10-point numerical rating scale (present pain intensity) and the short-form McGill Pain Questionnaire 2 (continuous pain, intermittent pain, neuropathic pain, affective descriptors, and total score)...
2016: PloS One
https://www.readbyqxmd.com/read/27896410/low-incidence-of-lymph-node-metastasis-after-resection-of-hepatitis-virus-related-intrahepatic-cholangiocarcinoma
#12
Hiroya Iida, Masaki Kaibori, Shogo Tanaka, Shigekazu Takemura, Hiroshi Wada, Fumitoshi Hirokawa, Takuya Nakai, Michihiro Hayashi, Hidetoshi Eguchi, Shoji Kubo
BACKGROUND AND OBJECTIVES: We determined the rates of initial lymph node metastasis following curative resection of mass-forming type-intrahepatic cholangiocarcinoma (ICC) in patients with and without hepatitis virus infection. METHODS: We enrolled 87 patients between January 2000 and December 2013 with ICC without preoperative lymph node metastasis and without lymph node dissection. Patients included 32 who were seropositive for hepatitis B or C virus (virus group) and 55 who had no evidence of hepatitis virus infection (nonvirus group)...
November 28, 2016: World Journal of Surgery
https://www.readbyqxmd.com/read/27871684/the-utility-of-5-aminolevulinic-acid-mediated-photodynamic-diagnosis-in-the-detection-of-intraoperative-bile-leakage
#13
Yoshihiro Inoue, Yoshiro Imai, Kensuke Fujii, Fumitoshi Hirokawa, Michihiro Hayashi, Kazuhisa Uchiyama
PURPOSE: The purpose of this retrospective study was to evaluate the utility of the new intraoperative bile leakage test as a preventive measure of postoperative bile leakage. METHOD: 737 patients were retrospectively analyzed with respect to the management of intra- and post-operative bile leakage. RESULTS: Nine (8.3%) of 109 patients evaluated using conventional white light fluorescent imaging were recognized as having intra-operative bile leakage...
October 8, 2016: American Journal of Surgery
https://www.readbyqxmd.com/read/27862483/cytological-features-of-solid-variants-of-papillary-thyroid-carcinoma-a-fine-needle-aspiration-cytology-study-of-18-cases
#14
M Higuchi, M Hirokawa, A Suzuki, N Takada, N Yamao, S Kuma, A Miyauchi
OBJECTIVE: Solid variants of papillary thyroid carcinoma (SV-PTC) are rare, and there have been few reports describing the cytological findings of such variants. METHODS: The cytological features of cellular specimens aspirated from 18 histologically confirmed SV-PTC cases were evaluated, retrospectively. RESULTS: Solid and small papillary clusters were observed in 14 (77.8%) and 13 (72.2%) cases, respectively. The incidences of large papillary clusters (11...
November 13, 2016: Cytopathology: Official Journal of the British Society for Clinical Cytology
https://www.readbyqxmd.com/read/27824288/genotype-analyses-in-the-japanese-and-belarusian-populations-reveal-independent-effects-of-rs965513-and-rs1867277-but-do-not-support-the-role-of-foxe1-polyalanine-tract-length-in-conferring-risk-for-papillary-thyroid-carcinoma
#15
Alyaksandr V Nikitski, Tatiana I Rogounovitch, Andrey Bychkov, Meiko Takahashi, Koh-Ichiro Yoshiura, Norisato Mitsutake, Takahisa Kawaguchi, Michiko Matsuse, Valentina M Drozd, Yuri Demidchik, Eijun Nishihara, Mitsuyoshi Hirokawa, Akira Miyauchi, Alexander V Rubanovich, Fumihiko Matsuda, Shunichi Yamashita, Vladimir A Saenko
BACKGROUND: Several functional single-nucleotide polymorphisms (SNPs) at the FOXE1 locus on chromosome 9q22.33 have been associated with the risk for papillary thyroid carcinoma (PTC). This study set out to elucidate whether their effects are independent, using genotyping results in populations of Asian and European descent. METHODS: SNPs rs965513 and rs1867277 and a polymorphic region determining the length of the FOXE1 polyalanine (poly-Ala) tract were genotyped in 501 patients with PTC and 748 healthy individuals from Japan, and in 660 patients and 820 population controls from Belarus...
December 15, 2016: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/27807709/prognostic-significance-of-the-proportion-of-tall-cell-components-in-papillary-thyroid-carcinoma
#16
Yasuhiro Ito, Mitsuyoshi Hirokawa, Akira Miyauchi, Takuya Higashiyama, Minoru Kihara, Akihiro Miya
AIM: Tall cell variant (TCV) of papillary thyroid carcinoma (PTC) shows a poorer prognosis than conventional PTC. The World Health Organization (WHO) classification defines TCV as the tall cell component (TCC) in ≥50% of PTC lesions. We investigated whether and how the proportion of TCC affects the prognosis of patients with PTC with TCC. PATIENTS AND METHODS: Seventy patients with TCC in ≥30% of their PTC lesions and 210 age- and gender-matched controls with no TCC who underwent locally curative surgery at Kuma Hospital (2006-2014) were enrolled...
November 2, 2016: World Journal of Surgery
https://www.readbyqxmd.com/read/27764825/the-bethesda-system-for-reporting-thyroid-cytopathology-proposed-modifications-and-updates-for-the-second-edition-from-an-international-panel
#17
Marc Pusztaszeri, Esther Diana Rossi, Manon Auger, Zubair Baloch, Justin Bishop, Massimo Bongiovanni, Ashish Chandra, Beatrix Cochand-Priollet, Guido Fadda, Mitsuyoshi Hirokawa, SoonWon Hong, Kennichi Kakudo, Jeffrey F Krane, Ritu Nayar, Sareh Parangi, Fernando Schmitt, William C Faquin
The Bethesda System for Reporting Thyroid Cytology (TBSRTC) was proposed in 2007 at the National Cancer Institute Thyroid Fine Needle Aspiration State of the Art and Science Conference held in Bethesda, Maryland. The aim was to address the inconsistent and sometimes confusing reporting terminologies used for thyroid FNA throughout the world. The TBSRTC consists of 6 diagnostic categories, each associated with an implied risk of malignancy that translates directly into a clinical management algorithm. Since the publication of the TBSRTC cytology Atlas in January 2010, considerable experience has been gained regarding its application in cytology practice, clinical impact, and limitations...
2016: Acta Cytologica
https://www.readbyqxmd.com/read/27725615/determination-of-inorganic-anions-in-seawater-samples-by-ion-chromatography-with-ultraviolet-detection-using-monolithic-octadecylsilyl-columns-coated-with-dodecylammonium-cation
#18
Yuuta Horioka, Ryuki Kusumoto, Kengo Yamane, Ryosuke Nomura, Takeshi Hirokawa, Kazuaki Ito
A fast and sensitive ion chromatographic method for the simultaneous determinations of six inorganic anions [iodate (IO3(-)), bromate (BrO3(-)), bromide (Br(-)), nitrite (NO2(-)), nitrate (NO3(-)), and iodide (I(-))] in seawater is described using dodecylammonium (DA(+))-coated monolithic octadecylsilyl (ODS) columns, a concentrated aqueous NaCl mobile phase containing dodecylammonium chloride (DAC), and a UV detector. The DA(+)-coated monolithic ODS columns show greater retention for iodate and weaker retention for iodide, compared to dilauryldimethylammonium (DDA(+))-coated monolithic ODS columns...
2016: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
https://www.readbyqxmd.com/read/27718151/surgical-outcomes-for-the-ruptured-hepatocellular-carcinoma-multicenter-analysis-with-a-case-controlled-study
#19
Shogo Tanaka, Masaki Kaibori, Masaki Ueno, Hiroshi Wada, Fumitoshi Hirokawa, Takuya Nakai, Hiroya Iida, Hidetoshi Eguchi, Michihiro Hayashi, Shoji Kubo
BACKGROUND: While spontaneously ruptured hepatocellular carcinoma (HCC) has a poor prognosis, the true impact of a rupture on survival after hepatic resection is unclear. METHODS: Fifty-eight patients with ruptured HCC and 1922 with non-ruptured HCC underwent hepatic resection between 2000 and 2013. To correct the difference in the clinicopathological factors between the two groups, propensity score matching (PSM) was used at a 1:1 ratio, resulting in a comparison of 42 patients/group...
December 2016: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/27703446/a-novel-germline-mutation-of-keap1-r483h-associated-with-a-non-toxic-multinodular-goiter
#20
Eijun Nishihara, Akira Hishinuma, Takahiko Kogai, Nami Takada, Mitsuyoshi Hirokawa, Shuji Fukata, Mitsuru Ito, Tomonori Yabuta, Mitsushige Nishikawa, Hirotoshi Nakamura, Nobuyuki Amino, Akira Miyauchi
BACKGROUND: A germline mutation of KEAP1 gene was reported as a novel genetic abnormality associated with familial multinodular goiter. That report was limited, and the pathogenic features were not well established. PATIENT FINDINGS: We report a 47-year-old Japanese woman who presented with hyperthyroidism and a large multinodular goiter. The family history was notable for a paternal history of goiter. Graves' disease was diagnosed based on positive TRAb, but scintiscan imaging showed that the patient's radioiodine uptake was restricted in the non-nodular areas, indicating largely cold nodules...
2016: Frontiers in Endocrinology
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