著者

Yuki Yoshimatsu Kazunori Tobino Saori Nishizawa Kohei Yoshimine Yoshitaka Oku

出版者

The Japanese Association of Rehabilitation Medicine

雑誌

Progress in Rehabilitation Medicine (ISSN:24321354)

巻号頁・発行日

vol.7, pp.20220007, 2022 (Released:2022-02-17)

参考文献数

19

被引用文献数

2

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Objectives: Swallowing function is affected in patients with chronic obstructive pulmonary disease (COPD), putting them at risk of exacerbation of COPD. We previously reported the effectiveness of the repetitive saliva swallowing test (RSST) in screening for patients at risk of COPD exacerbation. However, evidence on how to improve swallowing function in this population is extremely limited. Interferential current transcutaneous electrical sensory stimulation (IFC-TESS) stimulates the larynx and pharynx, thereby improving their sensory function. IFC-TESS is an emerging tool to enhance airway protection and increase swallowing frequency; however, its safety and efficacy in patients with COPD is unknown. Therefore, we performed a preliminary prospective study focusing on stable COPD patients.Methods: Patients with stable COPD who were hospitalized for yearly evaluation were recruited. Patients were included if their RSST was 5 or less. Nurses carried out IFC-TESS twice daily for 10 days. Swallow screening results were compared before and after the 10-day intervention.Results: Ten patients were included in the study. The IFC-TESS intervention was performed safely. Patients and nurses reported no discomfort or concerns regarding the intervention. The EAT-10 and RSST scores improved significantly after the intervention, and tongue pressure also tended to improve.Conclusions: IFC-TESS may be a promising intervention to improve swallowing in patients with COPD who are easily fatigued and struggle to perform swallowing exercises.

著者

Akira Ohtomo Takuto Soma Kohei Yoshimatsu

出版者

The Japan Society of Applied Physics

雑誌

JSAP Review (ISSN:24370061)

巻号頁・発行日

vol.2022, pp.220202, 2022 (Released:2022-08-25)

参考文献数

40

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In order to induce various electronic phase transitions in strongly correlated electron systems, lithium-ion battery-like electrochemical cells based on highly crystalline epitaxial thin films of transition-metal oxides have been developed. The electronic states of band insulators, Mott insulators, heavy-fermion metals, and superconductors are studied in detail from their transport, optical, and structural properties. This method has become a powerful tool for precise electrochemical doping of single samples and in-situ measurement of modulated electronic states. In this review, we present the results obtained in our previous studies, clarify the effectiveness and scope of application of this method, and look forward to its possible application to electrochemical devices.

著者

Yuki Yoshimatsu Kazunori Tobino Takafumi Kawabata Naoki Noguchi Ryo Sato Daisuke Motomura Takuto Sueyasu Kohei Yoshimine Saori Nishizawa Yoshihiro Natori

出版者

The Japanese Society of Internal Medicine

雑誌

Internal Medicine (ISSN:09182918)

巻号頁・発行日

pp.5752-20, (Released:2020-12-07)

参考文献数

12

被引用文献数

4

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While aspiration pneumonia constitutes the majority of pneumonia cases in the elderly, it remains highly underdiagnosed. We experienced a case of recurrent pneumonia and chronic cough that was later diagnosed as aspiration pneumonia and diffuse aspiration bronchiolitis (DAB) due to recurrent hemorrhaging from an intramedullary cavernous malformation. The patient was finally diagnosed when life-threatening respiratory depression caused emergency attention. This is the first report of hemorrhaging from an intramedullary cavernous malformation diagnosed due to aspiration pneumonia and DAB. These findings highlight the importance of considering aspiration in cases with recurrent pneumonia or chronic chough. The underlying cause may be a life-threatening condition.

著者

Kenichi Kurosaki Masataka Kitano Heima Sakaguchi Isao Shiraishi Naoko Iwanaga Jun Yoshimatsu Takaya Hoashi Hajime Ichikawa Satoshi Yasuda

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

vol.84, no.12, pp.2275-2285, 2020-11-25 (Released:2020-11-25)

参考文献数

30

被引用文献数

3

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Background:Congenital heart disease (CHD) is often diagnosed prenatally using fetal echocardiography, but few studies have evaluated the accuracy of these fetal cardiac diagnoses in detail. We investigated the discrepancy between pre- and postnatal diagnoses of CHD and the impact of discrepant diagnoses.Methods and Results:This retrospective study at a tertiary institution included data from the medical records of 207 neonates with prenatally diagnosed CHD admitted to the cardiac neonatal intensive care unit between January 2011 and December 2016. Pre- and postnatal diagnoses of CHD differed in 12% of neonates. Coarctation of the aorta and ventricular septal defects were the most frequent causes of discrepant diagnosis. Unexpected treatments were added to 38% of discrepant diagnostic cases. However, discrepant diagnoses did not adversely affect the clinical course. The 9% of the 207 neonates who required invasive intervention within 24 h of delivery were accurately diagnosed prenatally.Conclusions:Pre- and postnatal diagnoses differed in only a few neonates, with differences not adversely affecting the clinical course. Neonates who required invasive intervention immediately after delivery were accurately diagnosed prenatally. Prenatal diagnosis thus seems to contribute to improved prognosis in neonates with CHD.

著者

Hiroyuki Fuchino Naoko Anjiki Sayaka Murase Hirotaka Matsuo Shigeki Hayashi Nobuo Kawahara Kayo Yoshimatsu

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.70, no.12, pp.848-858, 2022-12-01 (Released:2022-12-01)

参考文献数

18

被引用文献数

1

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In this study, we investigated the correlation between the cultivation conditions and chemical composition of Ephedra sinica and E. sp. (denoted EP-13, which has been grown at the National Institutes of Biomedical Innovation, Health, and Nutrition for many years). The total contents of ephedrine and pseudoephedrine are specified in the Japanese Pharmacopoeia; therefore, we investigated the changes in their content under different cultivation conditions, including varying soil conditions and fertilization or the lack of fertilization. Poor growth due to low soil nutrition and lack of sunlight caused decrease of the alkaloid content. As expected, the plants accumulated proline, although the proline content varied considerably with cultivation location. The proline concentration correlated with the content of methanoproline. Moreover, a new compound, namely N,N-dimethyl-p-hydroxyphenylethylamine-O-[β-D-glucopyranosyl-(1→3)-α-L-rhamnopyranoside], was isolated from E. sinica but was absent in EP-13. This study on the correlation between cultivation methods and the alkaloid content in Ephedra is expected to assist in the future production of quality Ephedra herb.

著者

Takayuki Inui Noriaki Kawano Daisuke Araho Yukiyoshi Tamura Nobuo Kawahara Kayo Yoshimatsu

出版者

Japanese Society for Plant Biotechnology

雑誌

Plant Biotechnology (ISSN:13424580)

巻号頁・発行日

vol.38, no.1, pp.127-135, 2021-03-25 (Released:2021-03-25)

参考文献数

22

被引用文献数

1

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Glycyrrhiza plants are important resources for sweeteners and medicines, because underground parts of them contain glycyrrhizic acid (GL), which has sweet taste and various pharmacological activities (ex. anti-inflammatory, antiallergy, antiviral activity, etc.). Although such importance of them, their supply still depends principally on the collection of wild plants. Therefore, it is an important issue to develop stable and efficient production system of Glycyrrhiza plants. To overcome this problem, we established the hydroponic cultivation system of Glycyrrhiza uralensis and selected superior G. uralensis clones with high-GL contents in the containment greenhouse. In this study, we aimed to develop a method of selecting these superior G. uralensis clones by DNA sequence polymorphisms in biosynthetic genes. Among the DNA sequences of GL biosynthetic key enzyme gene (CYP88D6), we found Glycyrrhiza species and clone-specific polymorphisms in intronic regions. By using these polymorphisms, discrimination among Glycyrrhiza species and G. uralensis clones became possible. Furthermore, the appearance frequency of superior clone-specific alleles in cloned CYP88D6 sequences was correlated with GL contents in crude drugs collected from the Japanese market. We also observed the tendency that G. uralensis seedlings having superior clone-specific alleles of CYP88D6 gene showed higher secondary metabolite productivity than those without the alleles. These results indicated that superior clone-specific alleles of CYP88D6 gene could be applied as DNA markers for selecting G. uralensis clones accumulating high secondary metabolites.

著者

Yuki Yoshimatsu Noriyuki Ebi Ryunosuke Ooi Takuto Sueyasu Saori Nishizawa Miyuki Munechika Kohei Yoshimine Yuki Ko Hiromi Ide Kosuke Tsuruno Kazunori Tobino

出版者

The Japanese Society of Internal Medicine

雑誌

Internal Medicine (ISSN:09182918)

巻号頁・発行日

pp.5463-20, (Released:2020-11-02)

参考文献数

18

被引用文献数

5

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The efficacy of epidermal growth factor tyrosine kinase inhibitors (EGFR-TKIs) in lung squamous cell carcinoma is said to be low. Thus far, only four cases of osimertinib in lung squamous cell carcinoma have been published. We experienced a case of EGFR mutant lung squamous cell carcinoma in which fifth-line treatment with osimertinib was effective after T790M EGFR mutation turned positive. Osimertinib was resumed after sixth-line chemotherapy was ineffective, showing efficacy again. Osimertinib may be a promising treatment option for EGFR mutant lung squamous cell carcinoma. This is the first report to show its effect in a case of rechallenge after intervening chemotherapy. It may therefore be important to evaluate EGFR in never-smoker lung squamous cell carcinoma patients.

著者

Norihiro Okada Naohiko Takahashi Kunio Yufu Yukichi Murozono Osamu Wakisaka Tetsuji Shinohara Futoshi Anan Mikiko Nakagawa Masahide Hara Tetsunori Saikawa Hironobu Yoshimatsu

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

vol.74, no.7, pp.1379-1383, 2010 (Released:2010-06-25)

参考文献数

29

被引用文献数

24 35

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Background: Cardiovascular autonomic neuropathy is a major complication in patients with diabetes mellitus (DM). However, the relationship between cardiovascular autonomic neuropathy and the incidence of cardiovascular events has been poorly investigated in type 2 DM. The present study aimed to assess the long-term cardiovascular predictive value of baroreflex sensitivity (BRS) in Japanese patients with type 2 DM without structural heart disease. Methods and Results: BRS was evaluated using the phenylephrine method in 210 patients with type 2 DM who did not have structural heart disease or other severe complications. BRS was considered depressed if <6 ms/mmHg. Accurate follow-up information for 3-10 years (mean 4.7 years) was obtained in 184 patients (90 females, 94 males; mean age 58±12 years). The initial onset of a major adverse cardiovascular event (MACE) was investigated. During follow-up, 19 patients presented with a MACE (4 cardiovascular deaths, 3 nonfatal myocardial infarctions, 4 coronary revascularizations, 5 strokes, 2 congestive heart failures). Cox proportional hazards regression analysis revealed that depressed BRS was independently associated with the incidence of MACE (hazard ratio 1.93, 95% confidence interval 1.09-3.82, P=0.0236). Conclusions: Depressed BRS at baseline has long-term cardiovascular predictive value in Japanese patients with type 2 DM without structural heart disease.  (Circ J 2010; 74: 1379 - 1383)

著者

吉松 純 Jun Yoshimatsu

出版者

金城学院大学キリスト教文化研究所

雑誌

金城学院大学キリスト教文化研究所紀要 = Bulletin of Christian culture studies Kinjo Gakuin University

巻号頁・発行日

vol.23, pp.1-31, 2020-03-31

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フィンセント・ファン・ゴッホもマルク・シャガールも世代を超えて愛されている画家。バーネット・ニューマンは戦後のニューヨークの抽象芸術の一線で活躍した画家です。しかし,この3人の表現法はとても違います。何か共通することはあるのでしょうか。それは彼らの信仰にあります。ゴッホはオランダ改革派教会に生まれ育ち,聖書や教会などを作品の中に描いています。ユダヤ教はシャガールやニューマンに影響を及ぼしました。何世紀にもわたり十戒,とりわけ偶像礼拝につながる創作活動を禁じた第二戒はユダヤ人が芸術家を志す夢を打ち砕いてきました。シャガールもニューマンもそれと対峙して自分の絵を完成しました。この講演では,聴衆者に3人の芸術への思い,信仰をご紹介し,作品をより深く堪能する切っ掛けとなければと願っております。

著者

Akira SATO Goro ARAGANE Satoshi OGATA Kei YAMADA Shiro YOSHIMATSU

出版者

The Iron and Steel Institute of Japan

雑誌

Transactions of the Iron and Steel Institute of Japan (ISSN:00211583)

巻号頁・発行日

vol.26, no.11, pp.949-954, 1986 (Released:2006-09-08)

参考文献数

14

被引用文献数

1

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The oxidation rates of the elements in molten pig iron weighing 1kg contained in a graphite or an alumina crucible were measured by adding Fe2O3, CaO, Na2CO3, BaO, BaCO3, and Li2CO3 onto the bath. The dissolution rate of B2O3 in slag in distilled water or HCl solution was estimated by adding 10g of slag into water or a solution of 300cm3, stirring for 30min, and filtering.Boron in pig iron was effectively oxidized and trapped in the slag by the addition of Fe2O3 containing high basic fluxes under a higher oxidation atmosphere at low temperatures. Recovery of B2O3 can effectively be made by the dissolution of slag in distilled water at 100°C and more efficiently in HCl solution above 0.25N at 50°C. The dissolution of B2O3 in water was interfered by MnO, FeO, and SiO2.

著者

KASHU SHIMABUKURO YOSHIO MIZUNO KEN KURITA MASAHARU TSUCHIYA HIROSHI YOSHIMATSU

出版者

The Keio Journal of Medicine

雑誌

The Keio Journal of Medicine (ISSN:00229717)

巻号頁・発行日

vol.24, no.4, pp.275-287, 1975 (Released:2009-03-27)

参考文献数

17

被引用文献数

3 3

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Histological findings of the thymuses extirpated in 15 cases of Hashimoto's disease and 27 cases of focal chronic lymphoid thyroiditis were described. Hyperplasia of spindle-shaped epithelial cells were more prominent in the thymus of Hashimoto's disease (9/15, 60.0%). Thymic lymphoid follicles were demonstrated more frequently in focal chronic lymphoid thyroiditis (22/27, 81.5%). Plasma cell, which was ascertained by Methyl Green Pyronin stain was found in 10 out of 15 cases with Hashimoto's disease (66.6%) and in 16 out of 27 cases with focal chronic lymphoid thyroiditis (59.3%).The incidence of mononuclear cell which contained immunoglobulin or gammaglobulin in the thymuses was 62.5% (5 out of 8 patients) and 66.6% (4 out of 6 patients) in Hashimoto's disease and focal chronic thyroiditis, respectively.A long-term observation after thymectomy disclosed that the titrations of antibodies to thyroglobulin as well as thyroid microsome gradually decreased and came negative within one or two years, particularly in focal chronic lymphoid thyroiditis.It might be concluded that the thymus of Hashimoto's disease and focal chronic lymphoid thyroiditis was involved in proliferation of antibody forming cells and providing antigen reactive cells to induce immunopathy of thyroid and any other tissues.

著者

Keiko Yamasaki Hiroyuki Sawatari Nao Konagai Chizuko A. Kamiya Jun Yoshimatsu Jun Muneuchi Mamie Watanabe Terunobu Fukuda Atsushi Mizuno Ichiro Sakamoto Kenichiro Yamamura Tomoko Ohkusa Hiroyuki Tsutsui Koichiro Niwa Akiko Chishaki

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

vol.83, no.11, pp.2257-2264, 2019-10-25 (Released:2019-10-25)

参考文献数

38

被引用文献数

5

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Background:The average maternal age at delivery, and thus the associated maternal risk are increasing including in women with congenital heart disease (CHD). A comprehensive management approach is therefore required for pregnant women with CHD. The present study aimed to investigate the factors determining peripartum safety in women with CHD.Methods and Results:We retrospectively collected multicenter data for 217 pregnant women with CHD (age at delivery: 31.4±5.6 years; NYHA classifications I and II: 88.9% and 7.4%, respectively). CHD severity was classified according to the American College of Cardiology/American Heart Association guidelines as simple (n=116), moderate complexity (n=69), or great complexity (n=32). Cardiovascular (CV) events (heart failure: n=24, arrhythmia: n=9) occurred in 30 women during the peripartum period. Moderate or great complexity CHD was associated with more CV events during gestation than simple CHD. CV events occurred earlier in women with moderate or great complexity compared with simple CHD. Number of deliveries (multiparity), NYHA functional class, and severity of CHD were predictors of CV events.Conclusions:This study identified not only the severity of CHD according to the ACC/AHA and NYHA classifications, but also the number of deliveries, as important predictive factors of CV events in women with CHD. This information should be made available to women with CHD and medical personnel to promote safe deliveries.

著者

Congyun Jin Yoshiaki Yao Atsushi Yonezawa Satoshi Imai Hiroki Yoshimatsu Yuki Otani Tomohiro Omura Shunsaku Nakagawa Takayuki Nakagawa Kazuo Matsubara

出版者

The Pharmaceutical Society of Japan

雑誌

Biological and Pharmaceutical Bulletin (ISSN:09186158)

巻号頁・発行日

vol.40, no.11, pp.1990-1995, 2017-11-01 (Released:2017-11-01)

参考文献数

22

被引用文献数

13

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Riboflavin (vitamin B2) plays a role in various biochemical oxidation-reduction reactions. Flavin mononucleotide (FMN) and FAD, the biologically active forms, are made from riboflavin. Riboflavin transporters (RFVTs), RFVT1-3/Slc52a1-3, have been identified. However, the roles of human (h)RFVTs in FMN and FAD homeostasis have not yet been fully clarified. In this study, we assessed the contribution of each hRFVT to riboflavin, FMN and FAD uptake and efflux using in vitro studies. The transfection of hRFVTs increased cellular riboflavin concentrations. The uptake of riboflavin by human embryonic kidney cells transfected with hRFVTs was significantly increased, and the efflux was accelerated in a time-dependent manner. However, the uptake and efflux of FMN and FAD hardly changed. These results strongly suggest that riboflavin, rather than FMN or FAD, passes through plasma membranes via hRFVTs. Our findings could suggest that hRFVTs are involved in riboflavin homeostasis in the cells, and that FMN and FAD concentrations are regulated by riboflavin kinase and FAD synthase.

著者

Hiroki YOSHIMATSU Hirotaka MATSUMOTO Masanari MINAMOTO Ryohei SUZUKI Yohei MOCHIZUKI Takahiro TESHIMA Hidekazu KOYAMA

出版者

日本獣医循環器学会

雑誌

動物の循環器 (ISSN:09106537)

巻号頁・発行日

vol.49, no.1, pp.11-16, 2016-06-15 (Released:2016-07-07)

参考文献数

12

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Fatty acids are a major source of energy in the normal myocardium and are taken up passively from the bloodstream. However, with heart failure, the use of fatty acids decreases in the myocardium. Therefore, serum fatty acid concentrations in dogs with mitral insufficiency (MI) might differ from those in normal dogs. The present study was designed to determine the serum fatty acid compositions in dogs with different severities of MI according to the classification proposed by the International Small Animal Cardiac Heart Council (ISACHC) and to elucidate the relationships between the determined compositions and echocardiographic parameters. In total, 30 dogs with MI were divided into 3 groups (I, II, and III) according to the ISACHC classification of MI severity. The healthy group consisted of 12 dogs matched with the MI groups for age and body weight. The serum concentrations of 13 fatty acids were measured by gas chromatography. The levels of linoleic acid (LA), docosatetraenoic acid (DTA), and arachidonic acid (AA) in group I were significantly lower than those in the healthy group (p<0.05). The levels of eicosapentaenoic acid (EPA) and AA in group II were significantly lower than those in the healthy group (p<0.05). The level of EPA in group III was significantly lower than that in the healthy group (p<0.05). In addition, the ratio of EPA to AA levels (EPA/AA ratio) in group III was significantly lower than that in the healthy group (p<0.05). With regard to the relationships between fatty acid concentrations in all MI groups (I through III) and echocardiographic parameters, the levels of AA and DTA showed a significant positive correlation with the ratio of left ventricular end-diastolic internal diameter to aortic diameter (LVIDd/Ao ratio) (AA, r=0.396 and p=0.048; DTA, r=0.426 and p=0.027). In addition, the docosapentaenoic acid (DPA) level correlated negatively with fractional shortening (r=-0.437 and p=0.023). Furthermore, the EPA/AA ratio correlated negatively with the ratio of left atrial to aortic diameters (r=-0.383 and p=0.048). The fatty acid concentrations and ratios in the dogs with 3 types of MI according to the ISACHC classification differed from those in healthy dogs. Some of these concentrations and ratios correlated with echocardiographic parameters.

著者

吉松 梓 ヨシマツ アズサ Azusa Yoshimatsu

出版者

駿河台大学教養文化研究所

雑誌

駿河台大学論叢 (ISSN:09149104)

巻号頁・発行日

no.50, pp.143-157, 2015

著者

Mashio Nakamura Masakatsu Nishikawa Issei Komuro Isao Kitajima Yoshio Uetsuka Takuji Yamagami Hiroki Minamiguchi Rika Yoshimatsu Kosuke Tanabe Nobushige Matsuoka Kazuhiro Kanmuri Hisao Ogawa

出版者

日本循環器学会

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

pp.CJ-15-0195, (Released:2015-04-24)

参考文献数

14

被引用文献数

7 54

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Background:Anticoagulation is recommended as standard of care for venous thromboembolism (VTE) (pulmonary embolism [PE]/deep vein thrombosis [DVT]), for which unfractionated heparin (UFH) and warfarin are used in Japan. In the multi-regional AMPLIFY study, a fixed-dose regimen of apixaban alone was non-inferior to conventional therapy for treatment of PE/DVT and was associated with significantly fewer bleeding events.Methods and Results:Japan phase 3 study (AMPLIFY-J), randomized, active-controlled, open-label study in Japanese subjects with acute PE/DVT, was designed based on AMPLIFY. Key objectives were to investigate safety and efficacy of apixaban in symptomatic PE/DVT subjects during 24-week treatment. UFH/warfarin was used as control treatment. Apixaban was initiated at 10 mg twice daily for 7 days, followed by 5 mg twice daily for 23 weeks. All endpoints and imaging for thrombotic burden were assessed by an event adjudication committee. Eighty subjects were randomized, 33 subjects (41.3%) were aged <65 years. Proportion of major/clinically relevant non-major bleeding was lower in apixaban (7.5%) compared with well-controlled UFH/warfarin (28.2%; median TTR, 70.1%). Recurrent VTE occurred in no subjects in apixaban and in 1 subject in UFH/warfarin. Thrombotic burden results were similar in both groups. Proportions of subjects with adverse events was generally similar in both groups.Conclusions:Apixaban was well-tolerated and had a favorable safety profile. No clinically important efficacy difference compared with UFH/warfarin was observed.

著者

Mie Arakawa Takayuki Masaki Junko Nishimura Masataka Seike Hironobu Yoshimatsu

出版者

(社)日本内分泌学会

雑誌

Endocrine Journal (ISSN:09188959)

巻号頁・発行日

vol.58, no.3, pp.161-170, 2011 (Released:2011-03-31)

参考文献数

42

被引用文献数

19 78

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It has been demonstrated the involvement of branched-chain amino acids (BCAA) on obesity and related metabolic disorder. We investigated the effects of branched-chain amino acids (BCAA) on obesity and on glucose/fat homeostasis in mice fed on a high-fat (45%) diet. BCAA was dissolved in 0.5% methylcellulose and added to the drinking water (BCAA-treated group). A high-fat diet was provided for 6 weeks and BCAA was given for 2 weeks. The BCAA-treated group gained almost 7% less body weight and had less epididymal adipose tissue (WAT) mass than the control group (ppp<0.05). These results demonstrate that the liver and muscle TG concentration are less in BCAA-treated group. BCAA affects PPAR-alpha and UCP expression in muscle and liver tissue.

著者

Yoshimatsu

出版者

[輸入・発売: 東京エムプラス]

巻号頁・発行日

2003

著者

Kiyonori Kai Takashi Yamaguchi Yu Yoshimatsu Junzo Kinoshita Munehiro Teranishi Wataru Takasaki

出版者

日本毒性学会

雑誌

The Journal of Toxicological Sciences (ISSN:03881350)

巻号頁・発行日

vol.38, no.2, pp.269-277, 2013-04-01 (Released:2013-03-28)

参考文献数

21

被引用文献数

20 41

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A sensitive urinary biomarker for acute kidney injury (AKI) was investigated in beagle dogs with nephrotoxicity induced by gentamicin. Gentamicin sulphate at 25 or 50 mg/kg was injected (s.c.) for 9 days, and conventional urinalysis, ELISA assay of neutrophil gelatinase-associated lipocal (NGAL) in urine, blood chemistry, and pathological examinations were performed. The dog given gentamicin at 25 mg/kg only showed slight deposition of lysosomal granules in the proximal tubular epithelium of the kidneys without any other significant changes even though urinary NGAL was elevated on Day 10 (day of necropsy). In the dog receiving gentamicin at 50 mg/kg, increases in urinary NGAL were observed on Days 3 and 5, and absence of urination, marked increases in serum urea nitrogen and creatinine, enlargement and discoloration of the kidneys with marked necrosis, and swelling of proximal epithelium were observed. In conclusion, urinary NGAL is considered to be a candidate as a sensitive predictable biomarker of AKI in the gentamicin-induced nephrotoxicity model in dogs.