1.Studies on Pharmacological Effects of RYOKEI-JUTSUKAN-TO. A case of acute autonomic neuropathy with persistent orthostatic hypotension.
Yuji SHIOTANI ; Hidetsugu ASANOI ; Harumi MATSUDA ; Yutaka SHIMADA ; Katsutoshi TERASAWA
Kampo Medicine 1994;44(3):427-436
Acute autonomic neuropathy is a syndrome where the peripheral nervous system is damaged acutely, primarily, and diffusely. For refractory orthostatic hypotension, which persists in cases where the disorder has not been cured completely, hypertensors or mineralocorticoids are generally administered. We observed that patients who did not respond to such agents did, however, respond to Ryokei-jutsukan-to, although no one has reported previously on the use of this Kampo formulation for acute autonomic neuropathy. In order to define the mechanisms of action of this formulation, we conducted orthostatic tests and drug loading tests and also studied endocrinology and hemodynamics. Blood pressure rose with the treatment of Ryokei-jutsukan-to, and this proved to be due to an increase in peripheral vascular resistance. Furthermore, cardiac output was decreased, and the renin-angiotensin-aldosterone system, which had been slightly activated, was corrected. The increase in peripheral vascular resistance appears to be a result of direct action on the vascular wall, since the formulation inhibited the sympathetic activity and improved the denervation hypersensitivity of peripheral vascular receptors.
2.Studies on the Pharmacological Effects of Crocus(Crocus sativus LINNE). Changes in Prostaglandin Levels, Platelet Aggregation, Blood Viscosity and Laboratory Data throughout the Menstrual Cycle.
Yuji SHIOTANI ; Yutaka SHIMADA ; Harumi MATSUDA ; Kouzou TAKAHASHI ; Katsutoshi TERASAWA
Kampo Medicine 1995;45(4):823-831
In order to determine the pharmacological effects of Crocus (traditionally classified as an herb helpful in eliminating Blood Stagnation), the 11-dehydro TXB2, platelet aggregation, blood viscosity and laboratory data of 12 healthy sexually mature females were examined during the menstrual, follicle and corpus luteum phases before the test substance was administered. Compared with the follicle or corpus luteum phases, higher levels of 11-dehydro TXB2 and increased mean cell volume (MCV) were found during the menstrual phases. This suggested that the increase in blood viscosity may be due to a lowering of erythrocyte deformation resulting from increased mean cell volume. From the fact that the highest endometrial PGE2 value was exhibited during the menstrual Phase, PGE2 was thought to be involved in the MCV increase. Next, plain hot water was administered to the six cases in the control group (for four weeks), and Crocus infusion administered to the other six cases (for four weeks), after which a comparative study was made of their indicators. The significant lowering of the MCV and blood viscosity during the menstrual phase upon Crocus administration suggested that an improvement in erythrocyte deformation brought about by decreased MCV played a role in the reduction of blood viscosity. Moreover, a decrease in 11-dehydro TXB2 was observed during the low blood estrogen follicle phase. It has been reported that there is an overall increase in blood viscosity and acceleration of platelet and thrombin synthesis associated with the disease state known as “Blood Stagnation”. From the clear effects of Crocus upon these indicators, its effectiveness as an herb useful in eliminating Blood Stagnation in healthy sexually mature females was indicated.
3.Successful Surgical Treatment for Aortic Regurgitation Associated with Aortitis Syndrome Presenting Severe Occlusive Lesions of Bilateral Carotid Arteries.
Ken Suzuki ; Kazuhiro Taniguchi ; Keishi Kadoba ; Yuji Miyamoto ; Hikaru Matsuda
Japanese Journal of Cardiovascular Surgery 1996;25(5):325-328
A 29-year-old female with aortic regurgitation associated with aortitis syndrome and severe stenosis of bilateral carotid arteries was reported. She had no symptom of brain ischemia, although an aortogram revealed complete occlusion of the left common carotid artery and the left subclavian artery, and severe stenosis of the right common carotid artery. The intracranial major arteries were perfused totally by the right vertebral artery via collaterals. The transcranial Doppler method and perfusion cintigraphy revealed normal cerebral perfusion. Therefore, we performed conventional aortic valve replacement without reconstruction of carotid arteries. During cardiopulmonary bypass, the mean systemic blood pressure was kept higher than 60mmHg under moderate-hypothermic (tympanic temperature: 25°C) pulsatile perfusion with monitoring of the left middle cerebral artery flow velocity. The patient did not develop any cerebral complications during or after the operation.
4.RELATIONSHIP BETWEEN CHANGES OF SWIMMING VELOCITY, STROKE RATE, STROKE LENGTH AND MUSCLE ACTIVITIES IN FRONT CRAWL SWIMMING
YASUSHI IKUTA ; YUJI MATSUDA ; YOSUKE YAMADA ; NORIYUKI KIDA ; SHINGO ODA
Japanese Journal of Physical Fitness and Sports Medicine 2010;59(4):427-438
The aim of this study was to investigate the relationship between changes in swimming velocity (SV), stroke rate (SR), stroke length (SL) and muscle activities during a 4×50m swimming test to simulate a 200m freestyle race. A total of 20 male collegiate swimmers participated in this study. The electromyography (EMG) signals of 11 muscles, 7 muscles in the upper half of the body and 4 muscles in the lower half, were recorded with surface electrodes. SV, SR and SL were analyzed for each 50m (S1, S2, S3 and S4) from side view recordings of swimmers taken with an underwater camera.SV and SR for S1 were significantly higher than for S2 and S3. SL for S1 was significantly longer than for S3. The averaged EMGs (aEMGs) for S1 were significantly higher than for S2 or for S3 in 5 muscles (flexor carpi ulnaris, biceps brachii, triceps brachii, deltoideus posterior and rectus femoris). There were no significant changes between S3 and S4 in SV, SR, SL and aEMG of all muscles except pectoralis major which showed the highest aEMG in S4. Significant correlations were observed between changes of (Δ) aEMG and ΔSV, especially in upper half muscles (r=0.485-0.939, p<0.05).These results suggested that decline in muscle activities of the five muscles mentioned earlier caused a decrease in SV from S1 to S3; and an increase in muscle activity of the pectoralis major led preventing a decline in SV by maintaining the SR in S4.
5.Initial Clinical Experience and Evaluation of a Percutaneous Left Ventricular Assist System.
Hisashi Satoh ; Tohru Kobayashi ; Susumu Nakano ; Yasuhisa Shimazaki ; Mitsunori Kaneko ; Yuji Miyamoto ; Taizo Hiraisi ; Hikaru Matsuda
Japanese Journal of Cardiovascular Surgery 1994;23(5):301-306
We developed a percutaneous left ventricular assist system (PLVAS) using a centrifugal pump. PLVAS is the transseptal left atrial-femoral artery bypass to unload the left ventricle using a centrifugal pump. This PLVAS can be implanted through the inguinal vessels under fluoroscopy and also in 2 cases additional transesophageal echocardiogram guiding was performed. This PLVAS was applied to 6 patients with profound heart failure and refractory cardiogenic shock. The implantation of PLVAS required 30-60 minutes. The PLVAS assist flow was maintained at 3.0-4.0l/min. One patient with acute myocardial infarction survived and has been doing well for more than 1 year. The complications directly related to this procedure were minimal. PLVAS appears to be useful for patients with severe heart failure and may be useful as a short-time support or bridge to other more aggressive forms of life support.
6.CLASSIFICATION OF STROKE TYPES IN RELATION TO STROKE RATE AND STROKE LENGTH IN 100M FRONT-CRAWL RACE
YUJI MATSUDA ; YOSUKE YAMADA ; TOSHIFUMI AKAI ; YASUSHI IKUTA ; TERUO NOMURA ; SHINGO ODA
Japanese Journal of Physical Fitness and Sports Medicine 2010;59(5):465-474
The purposes of this study were as follows: 1) to classify competitive swimmers on the basis of their stroke rate (SR) and stroke length (SL) by applying a factor analysis and a cluster analysis, 2) to derive discriminant functions by applying a multiple discriminant analysis of the stroke characteristics, and 3) to compare the race patterns of groups classified according to the results of the cluster analysis. 94 male swimmers who had participated in 100-m freestyle events held at the All Japan Swimming Championship from 2000 to 2004 were selected as subjects. The average value of their swimming velocity, SR, and SL in four swimming phases (15-25 m, 25-45 m, 57.5-75 m, and 75-95 m) were measured from videos captured. The subjects were classified according to their SR and SL by applying a factor analysis and a cluster analysis. Results showed that the competitive swimmers could be classified into Type1-4. Type1 showed high values of SR throughout the race, Type2 showed high values of SR in the first half and high values of SL in the second half, Type3 showed high values of SL in the first half and high values of SR in the second half, and Type4 showed high values of SL throughout the race. Although there was no difference in swimming records among the four groups, each group had different race patterns. These results suggest that the knowledge of race patterns might be useful to swimmers or coaches for planning race strategies.
8.Fluoropyrimidines S-1 and Capecitabine may Prolong International Normalized Ratios of Prothrombin Time by 3-Fold in Cancer Patients Receiving Warfarin
Masayuki Ikenishi ; Akiko Kuroda ; Haruhiko Tsukazaki ; Masahiko Nakao ; Masashi Takeuchi ; Yuji Konishi ; Toshiyuki Matsuda ; Tohru Ohtori ; Kenji Matsuyama ; Mitsutaka Takada ; Hiroki Satoh ; Yasufumi Sawada ; Mutsuaki Ueda
Japanese Journal of Drug Informatics 2016;18(3):172-178
Objective: To compare effects of the fluoropyrimidines S-1 and capecitabine on prothrombin time international normalized ratios (PT-INR) of warfarin following coadministration and after discontinuation of each fluoropyrimidine treatment.
Methods: Medical records of patients receiving warfarin with either S-1 (6 patients) or capecitabine (7 patients) were obtained from four hospitals.
Results: Increased PT-INR was observed until peak levels of warfarin were achieved in all patients in S-1 and capecitabine treatment groups. Moreover, PT-INR significantly changed after coadministration within each group (p<0.05). Specifically, ratios of peak PT-INR after coadministration of each fluoropyrimidine and those following administration of warfarin alone (PT-INR elevation ratio) were 3.31 and 3.29 in S-1 and capecitabine coadministration groups, respectively. Moreover, numbers of days to peak PT-INR were 38.3 and 31.3 days, respectively, and did not significantly differ between the treatment groups. Furthermore, PT-INR returned to pretreatment levels by 17.5 and 15.1 days after discontinuation of S-1 and capecitabine, respectively, and did not significantly differ between the treatment groups.
Conclusion: Coadministration of S-1 and capecitabine similarly prolongs PT-INR by approximately 3-fold compared with administration of warfarin alone; therefore, these drug-drug interactions were clinically suggested to be of high risk for episodes of bleeding and remarkable alterations in coagulation parameters. Therefore, blood coagulation ability should be more carefully monitored with regard to PT-INRs in patients receiving warfarin with S-1 or capecitabine not only during coadministration but also after discontinuation of fluoropyrimidine treatments.
9.A-II-13 Cold Potassium Cardioplegia with dose Dependent on Left Ventricular Mass During Aortic Valve Replacement in Patients with Left Ventricular Hypertrophy
Hikaru Matsuda ; Hajime Hirose ; Susumu Nakano ; Ryota Shirakura ; Akihiro Okuda ; Seirei Maeda ; Mitsuhiro Kaneko ; Kyoichi Nishigaki ; Yoshikado Sasako ; Yuji Miyamoto ; Fumikazu Nomura ; Yasunaru Kawashima
Japanese Journal of Cardiovascular Surgery 1984;14(2):115-117
10.A Case Report of a Team Approach for a Rheumatoid Arthritis Patient with Above-knee Amputation to Acquire Activities of Daily Living with a Prosthetic Leg
Ami TABATA ; Miku NAKATANI ; Yuji IRIE ; Hiromu ITO ; Manabu NANKAKU ; Rie YAMAWAKI ; Ryosuke IKEGUCHI ; Shuichi MATSUDA
The Japanese Journal of Rehabilitation Medicine 2021;58(6):692-698
A 70-year-old woman with rheumatoid arthritis underwent above-knee amputation due to osteomyelitis after right total knee arthroplasty. After the surgery, the patient started rehabilitation for wearing a prosthetic leg. However, the patient could not wear the prosthesis by herself because of severe upper limb impairment due to bilateral finger joint deformity and muscle weakness associated with the rheumatoid arthritis. Therefore, physical therapists and prosthetists/orthotists collaborated to determine movements that could be performed, even with muscle weakness, using assistive devices such as a Velcro strip handle with the prosthesis and a prosthetic liner stand. Subsequently, repetitive training was performed in an environment similar to the setting of the patient's prosthesis use at home. Consequently, although no change in upper limb function was observed, the patient had increased independence during prosthesis attachment. As she had difficulty wearing and removing her trousers/underwear while wearing the prosthesis, she performed movements using assistive devices and made changes to the order of movements. Six months after the surgery, she could wear the prosthesis and perform self-care correctly by herself and return home. Therefore, to maximize function that enables independence after amputation, helping patients learn how to put on the prosthesis using a team approach is important.