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Kobe Journal of Medical Sciences

Nesma Nabil Ibrahim Mohamed, Taro Okada, Taketoshi Kajimoto, Shun-Ichi Nakamura
Sphingosine 1-phosphate (S1P) is a bioactive phosphorylated product of sphingosine catalyzed by sphingosine kinase (SphK) and implicated in diverse cellular functions including vesicular trafficking. In the present study we have shown the importance of one of the subtypes of SphK, SphK2, in the regulation of cargo content in exosomes released from human myeloid leukemia K562 cells. First, SphK2 has been shown to localize with N-Rh-PE-positive late endosomes in the cells. Next, siRNA-mediated knockdown of Sphk2 but not SphK1 resulted in a reduction of cargo content in purified exosomes...
May 25, 2018: Kobe Journal of Medical Sciences
Naoki Otsuki, Mio Matsui, Miki Takahashi, Ryohei Sasaki, Naomi Kiyota, Makoto Usami, Ken-Ichi Nibu
OBJECTIVE: TALK score has been developed as an index for predicting the possibility of larynx preservation and prognosis of the patients with advanced laryngeal and hypopharyngeal cancers treated by concurrent chemoradiotherapy (CCRT). In this study, we validated the original TALK score in our clinical setting and modified the score for Japanese population. METHODS: The subjects were 21 patients with laryngeal cancer and 50 patients with hypopharyngeal cancer who underwent CCRT at Kobe University Hospital between April 2007 and August 2012...
April 19, 2018: Kobe Journal of Medical Sciences
Toshihiko Ikuta, Kazumichi Fujioka, Yumi Sato, Mariko Ashina, Sachiyo Fukushima, Shohei Ohyama, Saki Okubo, Keiji Yamana, Mayumi Morizane, Kenji Tanimura, Masashi Deguchi, Kazumoto Iijima, Ichiro Morioka, Hideto Yamada
Congenital complete atrioventricular block (CCAVB) is a condition in which the atria and ventricles beat independently of each other. CCAVB cases require permanent pacemaker implantation until adulthood. Nevertheless, consensus regarding postnatal medical therapy for bradycardia has not been reached. Here we report the case of a newborn with CCAVB, whose intractable bradycardia was successfully treated with transdermal tulobuterol. Tulobuterol is a selective β2-adrenoceptor agonist, widely used safely as bronchodilator in children...
April 19, 2018: Kobe Journal of Medical Sciences
Saki Okubo, Kazumichi Fujioka, Megumi Yamane, Mariko Ashina, Sachiyo Fukushima, Toshihiko Ikuta, Shohei Ohyama, Keiji Yamana, Akiko Kobayashi, Kazumoto Iijima, Ichiro Morioka
We reported a term newborn case of early onset sepsis caused by nontypeable Haemophilus Influenzae (NTHi) with massive bacterial invasion in the placenta. Based on the consistent results of maternal placental pathology and neonatal bacterial culture, we diagnosed this as vertical transmission of NTHi via vaginal delivery. In general, NTHi infections occur in preterm infants, and our term infant case is very unusual. In conclusion, clinicians should consider NTHi as a cause of neonatal sepsis, even in term infants...
April 19, 2018: Kobe Journal of Medical Sciences
Motoko Tachihara, Daisuke Tamura, Tatsunori Kiriu, Shuntaro Tokunaga, Yukihisa Hatakeyama, Haruko Shinke, Tatsuya Nagano, Kyosuke Nakata, Nobuko Hazeki, Hiroshi Kamiryo, Kazuyuki Kobayashi, Yoshihiro Nishimura
OBJECTIVE: Endobronchial ultrasonography and guide sheath (EBUS-GS) technique has high diagnostic yield in lung nodules. Virtual bronchoscopic navigation (VBN) can lead bronchoscope to the target bronchi. The aim of this prospective study was to compare the diagnostic yield of two bronchoscopic procedures: bronchoscopy under EBUS-GS and VBN with or without x-ray fluoroscopy in small peripheral pulmonary lesions (PPLs, ≤30mm) with apparent CT-bronchus sign. METHODS: 31 patients with PPLs which had apparent CT-bronchus sign were randomly assigned to the X-ray or the non-X-ray groups (18 with and 13 without fluoroscopy) between September 1, 2012, and September 30, 2015...
March 27, 2018: Kobe Journal of Medical Sciences
Caessar Pronocitro, Nenny Sri Mulyani, Afif Avicenna Ghufron, Yugata Halimawan Hazazi, Bambang Ardianto, Didik Setyo Heriyanto
Hepatitis B remains a global burden, with estimated 15 to 40 percents of infected individuals eventually suffer from liver cirrhosis, liver failure, and hepatocellular carcinoma. Vaccination aims to form anti-HBs antibody with protective titer to prevent infection. CD4 T cell lymphocytes are known to play a major role in establishing immunity after vaccination. This study aimed to investigate protective titer rate among Indonesian children in Special Region of Yogyakarta following hepatitis B vaccination and correlation between anti-HBs titer and CD4 count...
January 17, 2018: Kobe Journal of Medical Sciences
Yasuyuki Shimizu, Hiroaki Akasaka, Daisuke Miyawaki, Naritoshi Mukumoto, Masao Nakayama, Tianyuan Wang, Saki Osuga, Sachiko Inubushi, Ryuichi Yada, Yasuo Ejima, Kenji Yoshida, Takeaki Ishihara, Ryohei Sasaki
In cancer research, small animal models, for example, mice, rats, or rabbits, facilitate the in-depth study of biological processes and the effects of radiation treatment that can lead to breakthrough discoveries. However, the physical quality of small animal irradiation systems has not been previously evaluated. In this study, we evaluate the quality of a small animal irradiation system using GAFCHROMIC™ film and a Tough Water Phantom. The profiles and percentage depth dose curves for several irradiation conditions were measured to evaluate the quality of the irradiation system...
January 17, 2018: Kobe Journal of Medical Sciences
Emma Tabe Eko Niba, Mawaddah Ar Rochmah, Nur Imma Fatimah Harahap, Hiroyuki Awano, Ichiro Morioka, Kazumoto Iijima, Toshio Saito, Kayoko Saito, Atsuko Takeuchi, Poh San Lai, Yoshihiro Bouike, Hisahide Nishio, Masakazu Shinohara
BACKGROUND: Spinal muscular atrophy (SMA) is one of the most common autosomal recessive disorders. The symptoms are caused by defects of lower motor neurons in the spinal cord. More than 95% of SMA patients are homozygous for survival motor neuron 1 (SMN1) deletion. We previously developed a screening system for SMN1 deletion based on a modified competitive oligonucleotide priming-PCR (mCOP-PCR) technique using dried blood spot (DBS) on filter paper. This system is convenient for mass screening in the large population and/or first-tier diagnostic method of the patients in the remote areas...
December 18, 2017: Kobe Journal of Medical Sciences
Masaya Akashi, Kenji Matsuo, Manabu Shigeoka, Yasumasa Kakei, Takumi Hasegawa, Akira Tachibana, Shungo Furudoi, Takahide Komori
The aim of this case series was to reveal the difficulties in diagnosing fibro-osseous lesions with radiological and histopathological examinations and quantify the potential risk of infection to fibro-osseous legions. To analyze the concordance between radiological and histopathological diagnoses, this retrospective case series included patients who were clinically diagnosed with fibro-osseous lesions via radiological findings and excluded the patients who did not undergo histopathological examinations. This study also included the patients in whom histopathological results confirmed fibro-osseous legions when preoperative radiological diagnosis did not include fibro-osseous legions...
December 18, 2017: Kobe Journal of Medical Sciences
Takako Kanatani, Issei Nagura, Yoshifumi Harada, Masatoshi Sumi
The distribution of electrophysiological severity of carpal tunnel syndrome (CTS) in an outpatient setting and whether electrophysiological severity could be an objective tool for decision-making regarding choice of surgery were investigated. During conservative treatment, 1079 outpatients with idiopathic CTS were classified according to the electrophysiological severity scale (Stage 1-5). The results were provided to the patients and explained, but they were not indicated a treatment protocol intentionally...
December 18, 2017: Kobe Journal of Medical Sciences
Tomoko Inagaki, Shin Nishiumi, Yoshiyuki Ito, Akiyo Yamakawa, Yukinao Yamazaki, Masaru Yoshida, Takeshi Azuma
Helicobacter pylori, which is involved in the pathogenesis of gastroduodenal disease, produces CagA and VacA as major virulence factors. CagA is classified into East Asian and Western types based on the number and sequences of its Glu-Pro-Ile-Tyr-Ala motifs. The vacA gene has three polymorphic regions: the signal (s), intermediate (i), and middle (m) regions. The lowest gastric cancer mortality rate is seen in Okinawa. On the Japanese mainland (Honshu), most H. pylori produce s1/m1-VacA, which exhibits strong toxicity, and East Asian-type CagA...
November 22, 2017: Kobe Journal of Medical Sciences
Kentaro Iwata, Asako Doi
BACKGROUND: The purpose of this study is to investigate the medical students'perceptions of the Hybrid Educational Activities between team based learning (TBL) and problem based learning (PBL) Program (HEATAPP), a novel educational program that combines characteristics of PBL and TBL. METHODS: A five-day HEATAPP on infectious diseases was provided to 4th year medical students at Kobe University School of Medicine, Kobe, Japan. After the program, a focus group discussion was held among 6 medical students who participated in HEATAPP...
November 10, 2017: Kobe Journal of Medical Sciences
Agian Jeffilano Barinda, Koji Ikeda, Ken-Ichi Hirata, Noriaki Emoto
Vascular calcification is an important risk factor for cardiovascular disease, and is closely associated with all-cause mortality. Recently, it has been revealed that vascular calcification is not a passive precipitation of circulating minerals, but is a process actively regulated through machinery similar to bone formation. During the bone remodeling, osteoclasts execute the bone resorption by releasing hydrogen ions to dissolve minerals; however, molecular mechanisms underlying decalcification of ectopically calcified lesions remain largely unknown...
October 16, 2017: Kobe Journal of Medical Sciences
Mawaddah Ar Rochmah, Ai Shima, Nur Imma Fatimah Harahap, Emma Tabe Eko Niba, Naoya Morisada, Shinichiro Yanagisawa, Toshio Saito, Kaori Kaneko, Kayoko Saito, Ichiro Morioka, Kazumoto Iijima, Poh San Lai, Yoshihiro Bouike, Hisahide Nishio, Masakazu Shinohara
BACKGROUND: Spinal muscular atrophy (SMA) is a neuromuscular disease caused by a mutation in SMN1. SMA is classified into three subtypes (types 1, 2, 3) based on achieved motor milestones. Although NAIP and SMN2 are widely accepted as SMA-modifying factors, gender-related modifying factors or gender effects on the clinical phenotype are still controversial. METHODS: A total of 122 Japanese patients with SMA, of which SMN1 was homozygously deleted, were analyzed from the perspective of the achieved motor milestone, NAIP status and SMN2 copy number...
October 16, 2017: Kobe Journal of Medical Sciences
Masakazu Shinohara, Mawaddah Ar Rochmah, Kenta Nakanishi, Nur Imma Fatimah Harahap, Emma Tabe Eko Niba, Toshio Saito, Kayoko Saito, Atsuko Takeuchi, Yoshihiro Bouike, Hisahide Nishio
BACKGROUND: Spinal muscular atrophy (SMA) is a frequent autosomal recessive disorder, characterized by lower motor neuron loss in the spinal cord. More than 95% of SMA patients show homozygous survival motor neuron 1 (SMN1) deletion. We previously developed a screening system for SMN1 deletion based on a modified competitive oligonucleotide priming-PCR (mCOP-PCR) technique. However, non-specific amplification products were observed with mCOP-PCR, which might lead to erroneous interpretation of the screening results...
September 7, 2017: Kobe Journal of Medical Sciences
Yuji Miyatake, Shohei Makino, Kenta Kubota, Moritoki Egi, Satoshi Mizobuchi
It has been proposed that anticoagulant activity during continuous renal replacement therapy with nafamostat mesilate can be monitored by using intra-circuit activated clotting time. However, it is still unclear whether activated clotting time would be useful for this purpose. We conducted a retrospective study and included 76 patients who required continuous renal replacement therapy using nafamostat mesilate. We obtained information for pre- and post-filter activated clotting times and bleeding complications...
August 30, 2017: Kobe Journal of Medical Sciences
Datu Respatika, Yasuyuki Saito, Ken Washio, Satomi Komori, Takenori Kotani, Hideki Okazawa, Yoji Murata, Takashi Matozaki
Signal regulatory protein α (SIRPα), is an immunoglobulin superfamily protein that is predominantly expressed in macrophages and dendritic cells (DCs), especially CD4+ conventional DCs (cDCs). In this study, we demonstrated that, in addition to the reduced number of CD4+ cDCs, the number of T cells was significantly decreased in the spleen of Sirpa-/- mice, in which full-length of SIRPα protein was systemically ablated. The size of the T cell zone was markedly reduced in the spleen of Sirpa-/- mice. In addition, Sirpa-/- mice revealed a marked reduction of CCL19, CCL21, and IL-7 expression, which are thought to be important for homeostasis of T cells in the spleen...
August 10, 2017: Kobe Journal of Medical Sciences
Takeshi Nishimura, Hiroyuki Sakata, Taihei Yamada, Mariko Terashima, Kunihiro Shirai, Isamu Yamada, Joji Kotani
Patterns of penetrating abdominal stab wounds (ASW) may be different according to the mechanism of injury. The purpose of this study was to review and characterize penetrating abdominal stab wounds in self-inflicted wound patients and assaulted patients. We retrospectively analyzed patients with ASW who were admitted to our emergency department from 2007 to 2015. The patients were divided into two groups: self-inflicted wound group and assaulted group. There were 46 stabbing cases in 45 different patients (25 males, 21 females; average age 47 y, range 21 to 85 y)...
July 20, 2017: Kobe Journal of Medical Sciences
Naomi Mizuta, Tsutomu Nakagawa, Kazuhiro Yamamoto, Tatsuya Nishioka, Manabu Kume, Hiroo Makimoto, Ikuko Yano, Hironobu Minami, Midori Hirai
Albumin-bound paclitaxel (Abraxane®, nab-paclitaxel) is not recommended to be administered concurrently or sequentially with other drugs due to concern for instability. The need to administer drugs separately increases infusion time. We evaluated the compatibility and stability of solutions containing nab-paclitaxel and other drugs, including gemcitabine hydrochloride, carboplatin, dexamethasone sodium phosphate, granisetron hydrochloride, and palonosetron hydrochloride. We visually examined changes in appearance, pH, and concentration of the mixed solutions of nab-paclitaxel and other drugs for up to 24 h...
July 20, 2017: Kobe Journal of Medical Sciences
Eiji Funatsu, Atsuhiro Masuda, Mamoru Takenaka, Takashi Nakagawa, Hideyuki Shiomi, Hayato Yoshinaka, Takashi Kobayashi, Arata Sakai, Yosuke Yagi, Masaru Yoshida, Yoshifumi Arisaka, Yoshihiro Okabe, Hiromu Kutsumi, Takeshi Azuma
BACKGROUND: Previous pancreatitis is a definite patient-related risk factor for pancreatitis after endoscopic retrograde cholangiopancreatography (post-ERCP pancreatitis: PEP). However, the effects of differences in the history of PEP and acute pancreatitis on the occurrence of PEP have not been fully investigated. We examined the relationship between previous PEP or previous acute pancreatitis and procedural factors associated with PEP. METHODS: Clinical data on 1,334 consecutive patients undergoing ERCP between April 2006 and June 2010 were collected...
May 15, 2017: Kobe Journal of Medical Sciences
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