106 results match your criteria: "Kochi University Medical School[Affiliation]"

Analysis of lipid raft molecules in the living brain slices.

Neurochem Int

October 2018

Department of Biochemistry, Saitama Medical University, 38 Morohongo, Moroyama-machi, Iruma-gun, Saitama 350-0495, Japan.

Neuronal plasma membrane has been thought to retain a lot of lipid raft components which play important roles in the neural function. Although the biochemical analyses of lipid raft using brain tissues have been extensively carried out in the past 20 years, many of their experimental conditions do not coincide with those of standard neuroscience researches such as neurophysiology and neuropharmacology. Hence, the physiological methods for lipid raft analysis that can be compatible with general neuroscience have been required.

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Background: Screening for developmental disorders is an important task for Child Health Care. The concept of ESSENCE (early symptomatic syndromes eliciting neurodevelopmental clinical examinations) was created to cover all types of early developmental disorders and the ESSENCE-Questionnaire (ESSENCE-Q containing 12 questions with possible total scores ranging from 0 to 22) was developed as a tool for early detection of these disorders. The aim of this study was to perform a validation study in a public health situation in Japan.

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Graves' disease is an autoimmune disease that results in and is the most common cause of hyperthyroidism, and the reactivation of persisting Epstein-Barr virus (EBV) in B lymphocytes induces the differentiation of host B cells into plasma cells. We previously reported that some EBV-infected B cells had thyrotropin receptor antibodies (TRAbs) as surface immunoglobulins (Igs), and EBV reactivation induced these TRAb+EBV+ cells to produce TRAbs. EBV reactivation induces Ig production from host B cells.

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CCL11 promotes migration and proliferation of mouse neural progenitor cells.

Stem Cell Res Ther

February 2017

Center for Innovative and Translational Medicine, Kochi University Medical School, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.

Background: Neonatal hypoxia-ischemia induces massive brain damage during the perinatal period, resulting in long-term consequences to central nervous system structural and functional maturation. Although neural progenitor cells (NPCs) migrate through the parenchyma and home in to injury sites in the rodent brain, the molecular mechanisms are unknown. We examined the role of chemokines in mediating NPC migration after neonatal hypoxic-ischemic brain injury.

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Retrograde venography during balloon-occluded retrograde transvenous obliteration of gastric varices.

Minim Invasive Ther Allied Technol

February 2017

a Department of Diagnostic Radiology, Institute and Graduate School of Biomedical Sciences , Hiroshima University, Hiroshima , Japan.

Purpose: The purpose of this study was to evaluate changes in thrombosis in gastric varices.

Material And Methods: Fourteen patients were studied who underwent balloon-occluded retrograde transvenous obliteration (B-RTO) for gastric varices with a gastrorenal shunt. The B-RTO catheter was retained overnight in all patients.

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HSO3-3-galactosylceramide (Sulfatide) species comprise the major glycosphingolipid components of oligodendrocytes and myelin and play functional roles in the regulation of oligodendrocyte maturation and myelin formation. Although various sulfatide species contain different fatty acids, it is unclear how these sulfatide species affect oligodendrogenesis and myelination. The O4 monoclonal antibody reaction with sulfatide has been widely used as a useful marker for oligodendrocytes and myelin.

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Background: Early identification of autism spectrum disorder, intellectual developmental disorder, attention-deficit/hyperactivity disorder, and other neurodevelopmental disorders/problems is crucial, yet diagnosis is often delayed for years under the often misguided "wait-and-see" paradigm. The early symptomatic syndromes eliciting neurodevelopmental clinical examinations-questionnaire (ESSENCE-Q) is a brief (12-item) screening questionnaire developed specifically for the purpose of speeding up the identification process of a wide variety of neurodevelopmental problems. The aims were to 1) estimate the reliability of the ESSENCE-Q, 2) evaluate the clinical cutoff levels suggested by the author of the ESSENCE-Q, and 3) propose optimal cutoff levels based on receiver operating characteristic analysis.

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Objectives: Road traffic accident (RTA)-related trauma remains a public health issue. The aim of this study was to determine the frequency, causes and human impact of motor vehicle-related RTA in Lubumbashi, Democratic Republic of Congo.

Methods: A prospective cross-sectional study was conducted in the first semester of the year 2015 in which 288 drivers (144 RTA-causing drivers and 144 control drivers who have been declared not guilty by road safety agents) involved in 144 motor vehicle-related RTA were interviewed, and only data on all RTA involving two motor vehicles with at least four wheels were recorded and analyzed.

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One promising method to visualize cancer cells is based on the detection of the fluorescent photosensitizer protoporphyrin IX (PpIX) synthesized from 5-aminolevulinic acid (ALA), but this method cannot be used in cancers that exhibit poor PpIX accumulation. PpIX appears to be pumped out of cancer cells by the ABC transporter G2 (ABCG2), which is associated with multidrug resistance. Genistein is a phytoestrogen that appears to competitively inhibit ABCG2 activity.

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We have developed a method for marine diatom transformation by microparticle bombardment using polymerase chain reaction (PCR)-amplified DNA fragments. We constructed a circular vector (approximately 5000 bp) containing an fcpA promoter from Phaeodactylum tricornutum, antibiotic-resistance genes and terminator from Cylindrotheca fusiformis (a "gene cassette"). Then the various lengths of linear vectors (+0-+1000 linear vectors) were then PCR-amplified from the circular plasmid.

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Embolization of Arteriovenous Malformations: Effect of Flow Control and Composition of n-Butyl-2 Cyanoacrylate and Iodized Oil Mixtures with and without Ethanol in an in Vitro Model.

Radiology

June 2016

From the Department of Diagnostic Radiology, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, Hiroshima, Japan 734-8551 (M.I., K.A.); Dotter Interventional Institute, Oregon Health and Science University, Portland, Ore (M.H., B.T.U., J.A.K.); and Department of Radiology, Kochi University Medical School, Nankoku, Kochi, Japan (T.Y.).

Purpose To elucidate the effect of flow control (ie, balloon occlusion) and the composition of various mixtures of n-butyl-2 cyanoacrylate (NBCA) and iodized oil, with and without the addition of ethanol, for the treatment of arteriovenous malformations in an in vitro model. Materials and Methods A simulation circuit device that featured an artificial nidus was filled with heparinized swine blood obtained during exsanguination from another Institutional Animal Care and Use Committee-approved protocol and was constructed to generate pulsatile flow. Mixtures of NBCA and iodized oil (NL) at a 1:1 ratio (NL 1:1); NL and ethanol (NLE) at a 1:1:3 ratio (NLE 1:1:3) with or without flow control; and NL at 1:3, 1:5, and 1:10 ratios without flow control were injected six times each for a total of 42 trials.

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Preoperative Coil Embolization in Patients With a Replaced Hepatic Artery Scheduled for Pancreatectomy With Splanchnic Artery Resection Helps to Prevent Ischemic Organ Injury.

J Comput Assist Tomogr

May 2016

From the *Department of Diagnostic Radiology, Hiroshima University Hospital, Hiroshima; †Department of Radiology, Kochi University Medical School, Nankoku; ‡Department of Radiology, Hiroshima Red Cross Hospital & Atomic-bomb Survivors Hospital, Hiroshima; §Department of Radiology, Hiroshima City Hospital, Hiroshima; ∥Department of Radiology, National Hospital Organization, Kure Medical Center, Kure; ¶Department of Diagnostic Radiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima; #Department of Surgery, Hiroshimakinen Hospital, Hiroshima; and Departments of **Surgery, Applied Life Sciences, and ††Diagnostic Radiology, Institute of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan.

Objective: The aim of this study was to evaluate the prevention of liver ischemic injury by preoperative coil embolization in patients with a replaced hepatic artery scheduled for pancreatectomy with splanchnic artery resection.

Methods: Between July 2009 and May 2012, 4 patients with replaced hepatic artery underwent pancreatectomy plus splanchnic artery resection. The replaced right hepatic artery was preoperatively embolized in 2 patients.

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Differential accumulation and function of proinflammatory 6-sulfo LacNAc dendritic cells in lymph node and colon of Crohn's versus ulcerative colitis patients.

J Leukoc Biol

October 2015

*Immunoregulation Laboratory, Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montréal, Quebec, Canada; Center for Innovative and Translational Medicine, Kochi University Medical School, Kochi, Japan; and Departments of Gastroenterology, Digestive Tract Surgery, and Pathology, Centre Hospitalier de l'Université de Montréal, Montréal, Quebec, Canada

Human Slan DCs have been studied in patients with psoriasis, rheumatoid arthritis, cancer, and autoimmune diseases. In this study, we investigated the frequency, phenotype, and function of Slan DCs in blood, colon, as well as mLNs of patients with IBD. We first show that the frequency of circulating CD14(dull)Slan DCs was reduced in CD patients refractory to immunosuppressive drugs or TNF-α blockers relative to untreated CD, UC, and healthy subjects.

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In 2006, the Adjuvant Chemotherapy Trial of S-1 for Gastric Cancer (ACTS-GC) demonstrated that S-1 is an effective adjuvant therapy for gastric cancer. Following that study, S-1 has been used as the standard adjuvant therapy for gastric cancer in Japan. However, the 1-year completion rate was only 65.

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Article Synopsis
  • * Rats received MSCs at different times (1, 6, 24, or 48 hours) after induced stroke, with results measured through behavioral tests and analysis of brain damage at 7 days post-stroke.
  • * Findings indicate that the 24-hour group showed the most significant improvements in behavior and reduced brain injury, along with higher levels of neurotrophic factors, suggesting that this timing may maximize the neuroprotective effects of MSC therapy.
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Use of a Latent Topic Model for Characteristic Extraction from Health Checkup Questionnaire Data.

Methods Inf Med

December 2016

Yutaka Hatakeyama, Center of Medical Information Science, Kochi University Medical School, Oko-cho Kohasu, Nankoku, Kochi 783-8505, Japan, E-mail:

Objectives: When patients complete questionnaires during health checkups, many of their responses are subjective, making topic extraction difficult. Therefore, the purpose of this study was to develop a model capable of extracting appropriate topics from subjective data in questionnaires conducted during health checkups.

Methods: We employed a latent topic model to group the lifestyle habits of the study participants and represented their responses to items on health checkup questionnaires as a probability model.

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Anti-melanoma differentiation-associated gene 5 (MDA5) antibody-positive amyopathic dermatomyositis (ADM) associated with rapidly progressive interstitial pneumonitis (RPIP) frequently has a poor prognosis and optimal treatment is not well defined. Here, we report a 62-year-old Japanese man with anti-MDA5 antibody-positive ADM associated with RPIP presented with progressive shortness of breath, Heliotrope rash, Gottron's papules, arthralgia, and fatigue but no sign of muscle weakness. Laboratory investigation revealed serum levels of the following biomarkers: ferritin, 1393 ng/mL; Krebs von der Lungen-6, 1880 U/mL; and creatine kinase, 85 U/L.

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We previously reported a method, termed enzyme-mediated activation of radical sources (EMARS) for analysis of co-clustered molecules with horseradish peroxidase (HRP) fusion proteins expressed in living cells. This method is featured by radical formation of labeling reagents by HRP. In the current study, we have employed another labeling reagent, fluorescein-conjugated tyramide (FT) instead of the original arylazide compounds.

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There have been a few studies on the ganglioside expression in human glioma tissues. However, the role of these gangliosides such as GD3 and GD2 has not been well understood. In this study we employed a genetically engineered mouse model of glioma to clarify the functions of GD3 in gliomas.

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Arteriography after embolization before distal pancreatectomy with en bloc celiac axis resection.

Minim Invasive Ther Allied Technol

August 2016

a 1 Department of Diagnostic Radiology, Institute and Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan.

Objective: To evaluate hemodynamics by arteriographic examinations with and without CT in the stomach wall and liver after preoperative embolization to redistribute blood flow to the stomach and liver, which is unified to be supplied from the superior mesenteric artery, before distal pancreatectomy with en bloc celiac axis resection (DP-CAR).

Material And Methods: In six patients with locally advanced cancer of the pancreatic body in whom DP-CAR was planned, the left gastric artery and common hepatic artery were embolized with coils. Celiac arteriography and superior mesenteric arteriography with and without CT were performed after embolization.

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Background: Psoriasis is a systemic inflammatory disease in which IL-17 and IL-22 levels are markedly increased in the skin and blood. The prevalent concept, using skin cells that are isolated from psoriatic plaques and examined after cell expansion and in vitro stimulation, is that IL-17 and IL-22 production essentially results from T cells and the rare type 3 innate lymphoid cells.

Objective: We sought to examine the cellular source of IL-17A and IL-22 at the protein and transcriptional single-cell level immediately after ex vivo skin cell isolation from psoriatic plaques.

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Background: Cassava and corn milling is a growing small-scale enterprise in Africa. We aimed to determine the incidence of hand-arm musculoskeletal complaints among vibration-exposed Congolese cassava and corn millers in the previous 12 months.

Methods: A cross-sectional study was conducted, prior to a follow-up study, from March to May 2013 among cassava/corn millers in Lubumbashi, Democratic Republic of Congo, in which 365 millers age-matched to 365 civil workers anonymously answered a questionnaire.

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Aim: Cooling the pharynx and upper oesophagus would be more advantageous for rapid induction of therapeutic hypothermia since the carotid arteries run in their vicinity. The aim of this study was to determine the effects of pharyngeal cooling on brain temperature and the safety and feasibility for patients under resuscitation.

Methods: Witnessed non-traumatic cardiac arrest patients (n=108) were randomized to receive standard care with (n=53) or without pharyngeal cooling (n=55).

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Functional compartmentalization of the plasma membrane of neurons by a unique acyl chain composition of phospholipids.

J Biol Chem

September 2014

Department of Biochemistry, Kochi University Medical School, Kohasu, Okocyou, Nankoku, Kochi 783-8505, Japan; Center for Innovate and Translational Medicine, and Kochi University Medical School, Kohasu, Okocyou, Nankoku, Kochi 783-8505, Japan. Electronic address:

In neurons, the plasma membrane is functionally separated into several distinct segments. Neurons form these domains by delivering selected components to and by confining them within each segment of the membrane. Although some mechanisms of the delivery are elucidated, that of the confinement is unclear.

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