1.Recent advance in synthesizing biocomposite materials.
Yukio IMANISHI ; Yoshihiro ITO
Japanese Journal of Cardiovascular Surgery 1989;19(1):53-61
In order to synthesize biocompatible materials that are used for artificial organs, hybridization of materials with biologically active substances seems to be most effective. To prevent coagulation upon blood/materials contact, hybridization with the materials of the repressor of coagulation factors or platelet and the activator of fibrinolysis has been done. Simultaneous hybridization of two kinds of biologically active substances has also been found effective. Recently, cell/materials hybridization is particularly popular. For this type of hybridization composite materials have been developed that are convenient for cell lining or in vivo compatible with living cells. This method will lead to the control of cell functions with suitable materials and a future development is expected.
2.Process of recovery of M. soleus atrophy in rabbit after Immobilization, with special reference to structural and soluble proteins.
TOMOKAZU ITO ; YOSHIHIRO WATANABE ; YOSHIHIKO OHSHIMA
Japanese Journal of Physical Fitness and Sports Medicine 1993;42(4):360-370
Previous studies have shown that the process of recovery after disuse muscle atrophy varies in different experimental models. We investigated the process of recovery of M, soleus atrophy after immobilization, with special reference to changes in structural and soluble proteins by means of electrophoresis and histochemical changes using myosin-ATPase staining. After rabbits had been subjected to 3 weeks of hindlimb immobilization, the changes were investigated immediately after the termination of immobilization, and at 1, 2, 3, 4 and 6 weeks of recovery. Just after the termination of immobilization, the wet weight of the M. soleus was 32.7±14.0% that of the opposite limb. The wet weight recovered rapidly and returned to the same level as that of the opposite side by 4 weeks. The amount of structural proteins decreased after immobilization, but did not return to the control level at 6 weeks after recovery. No new bands appeared in the electrophoretic patterns of the structural and soluble proteins at any of the stages of recovery. Furthermore, the special features of the bands of myosin light chains (MLCs-1, MLCs-2) also showed no change. ATPase staining showed that the area of type 2 fibers increased, and occupied 45.2±12.6% of the total area at 3 weeks after recovery, whereas that of muscle from controls occupied 17.3±5.7%. The area did not return too the control level by 6 weeks of recovery. The discrepancy between the histochemical changes and the changes in structural or soluble proteins during the recovery process appeared to be due to differences in the turnover ratio of each protein. It appears that the process of recovery of disuse muscle atrophy after immobilization is variable and compley, and differs according to the method of observation.
3.Current Status of Kampo Medicine Learning by Japanese Physicians for Cancer Treatment
Aki ITO ; Kaori MUNAKATA ; Yoshihiro IMAZU ; Kenji WATANABE
Kampo Medicine 2015;66(2):165-172
The aim of the current nationwide survey was to investigate the Kampo medicine experiences of Japanese physicians working at hospitals designated as core cancer centers by the Ministry of Health, Labour and Welfare. Among the 900 physicians surveyed, 92.4% reported having prescribed Kampo medications, of whom 73.5% reported having prescribed them for cancer patients. Despite this high percentage, only 28.7% of the physicians had studied Kampo medicine.
This survey found that over 40% of physicians in each generation had no intention of learning Kampo medicine. When asked to categorize their expectation of Kampo efficacy, about 30% said they had an ‘expectation’, a ‘no and yes expectation’, and ‘no expectation’ respectively.
However, physicians who had experience learning Kampo medicine had more expectation than physicians who had not. And the same expectation tendency for prophylaxis treatment was shown in physicians with that experience and those without. This difference is disadvantageous to patients. We therefore believe it necessary to create an environment in which physicians can learn Kampo medicine and methodology, which engenders cooperation between Kampo specialists and Japanese physicians in the treatment of cancer.
4.Current Problems of the Compound Fee for Herbal Medicine
Aki ITO ; Ko NISHIMURA ; Kaori MUNAKATA ; Hideaki TOKUNAGA ; Keiko MATSUURA ; Yoshihiro IMAZU ; Kenji WATANABE
Kampo Medicine 2010;61(1):19-26
This study was conducted to assess the appropriateness of preparation fees for dispensing herbal medicines, which were revised in 2006. We investigated the amount of time needed to dispense herbal, and general medicines. For prescriptions of1to 15 days length, the average time needed for herbal prescriptions was 13.4 minutes, which was about 3 times longer than for other prescriptions, which took only 4.4 minutes. For prescriptions of over 30 days length, this was about 7 times longer. Next we comparatively investigated fees charged per minute to prepare herbal medicines, with those for other medicines. Fees for all prescriptions of 1 to 15 days length were nearly equal, while fees for herbal prescriptions of over 15 days length were approximately 1/3 to 1/5l ess. Finally, we investigated the number of prescriptions filled out at one university hospital. In 2003 the number of herbal prescriptions exceeding 30 days length was 2.7% overall, while in 2008 this had increased approximately 14 times, to 42%. We would like to recommend an increase in herbal medicine preparation fees, based on the number of days a prescription is for, as the number of long-term prescriptions is increasing.
5.Efficacy and safety of peripherally inserted central catheters in patients receiving chemotherapy
Nobuhiro Asai ; Yoshihiro Ohkuni ; Ikuo Yamazaki ; Yasutaka Kawamura ; Ryo Matsunuma ; Kei Nakashima ; Takuya Iwasaki ; Kensuke Ito ; Toshihiro O'uchi ; Norihiro Kaneko
Palliative Care Research 2011;6(2):233-236
Background: On receiving chemotherapy, extravasation of drugs is a severe problem. The extravasations occur more commonly in patients who are elderly, have a poor performance status, have diabetes mellitus complications or have repeatedly received chemotherapy. Also, cancer patients usually require repeated venous punctures for this treatment. Purpose and methods: For the purpose of evaluating the efficacy and safety of peripherally inserted central catheters (PICCs) for intravenous chemotherapy, we retrospectively reviewed all the cancer patients for whom PICC were inserted for chemotherapy from April 2008 to December 2010. Patients' background, duration of PICC insertion and complications were evaluated in this study. Results: Ten patients (male 4, female 6) were reviewed in this study. The median age was 59 years (17∼69). A total of 13 PICCs were inserted in 10 patients. The most common underlying disease was abdominal rhabdomyosarcoma (n=3, 30%) followed by lung cancer (n=2, 20%) and hematologic tumor (n=2, 20%). The average catheter span was 46 days. Catheter-related infections were seen in 2 cases (15.4%). No phlebitis or thrombosis usually associated with venous route was detected in PICC used for chemotherapy. Conclusions: PICC might reduce patients' discomfort such as repeated venous punctures or complications associated with chemotherapy. We suggest that PICC would be one of the effective tools in chemotherapy. Palliat Care Res 2011; 6(2): 233-236
6.Association of Phase Angle Dynamics with Sarcopenia and Activities of Daily Living in Osteoporotic Fracture Patients
Yusuke ITO ; Yoshihiro YOSHIMURA ; Fumihiko NAGANO ; Ayaka MATSUMOTO ; Hidetaka WAKABAYASHI
Annals of Geriatric Medicine and Research 2024;28(2):192-200
Background:
This study aimed to determine whether changes in phase angle during rehabilitation are associated with clinical outcomes such as activities of daily living (ADL), skeletal muscle mass index (SMI), and strength in patients with osteoporotic fractures.
Methods:
This retrospective observational study included patients with osteoporotic fractures admitted to convalescent rehabilitation wards. Changes in phase angle were defined as the difference between the phase angle values at discharge and on admission. The primary outcome was the Functional Independence Measure motor (FIM-motor) score at discharge. The secondary outcomes were SMI and handgrip strength at discharge. We used multivariate analysis to adjust for confounding factors and examine the association between changes in the phase angle and outcomes.
Results:
We analyzed a total of 115 patients (97 women, mean age of 81.0±10.0 years), with a median change in phase angle of 0° during hospitalization. We observed increased phase angles in 49 patients (43%), with a median increase of 0.2°. Multiple regression analysis showed that changes in phase angle were independently associated with FIM-motor score at discharge (β=0.238, p=0.027). Changes in phase angle were not significantly associated with SMI (β=0.059, p=0.599) or handgrip strength (β=-0.032, p=0.773) at discharge.
Conclusion
An increased phase angle during rehabilitation was positively associated with ADL improvement in patients with osteoporotic fractures. These findings may help clinicians make informed decisions regarding patient care and treatment strategies for better outcomes.
7.Association of Phase Angle Dynamics with Sarcopenia and Activities of Daily Living in Osteoporotic Fracture Patients
Yusuke ITO ; Yoshihiro YOSHIMURA ; Fumihiko NAGANO ; Ayaka MATSUMOTO ; Hidetaka WAKABAYASHI
Annals of Geriatric Medicine and Research 2024;28(2):192-200
Background:
This study aimed to determine whether changes in phase angle during rehabilitation are associated with clinical outcomes such as activities of daily living (ADL), skeletal muscle mass index (SMI), and strength in patients with osteoporotic fractures.
Methods:
This retrospective observational study included patients with osteoporotic fractures admitted to convalescent rehabilitation wards. Changes in phase angle were defined as the difference between the phase angle values at discharge and on admission. The primary outcome was the Functional Independence Measure motor (FIM-motor) score at discharge. The secondary outcomes were SMI and handgrip strength at discharge. We used multivariate analysis to adjust for confounding factors and examine the association between changes in the phase angle and outcomes.
Results:
We analyzed a total of 115 patients (97 women, mean age of 81.0±10.0 years), with a median change in phase angle of 0° during hospitalization. We observed increased phase angles in 49 patients (43%), with a median increase of 0.2°. Multiple regression analysis showed that changes in phase angle were independently associated with FIM-motor score at discharge (β=0.238, p=0.027). Changes in phase angle were not significantly associated with SMI (β=0.059, p=0.599) or handgrip strength (β=-0.032, p=0.773) at discharge.
Conclusion
An increased phase angle during rehabilitation was positively associated with ADL improvement in patients with osteoporotic fractures. These findings may help clinicians make informed decisions regarding patient care and treatment strategies for better outcomes.
8.Association of Phase Angle Dynamics with Sarcopenia and Activities of Daily Living in Osteoporotic Fracture Patients
Yusuke ITO ; Yoshihiro YOSHIMURA ; Fumihiko NAGANO ; Ayaka MATSUMOTO ; Hidetaka WAKABAYASHI
Annals of Geriatric Medicine and Research 2024;28(2):192-200
Background:
This study aimed to determine whether changes in phase angle during rehabilitation are associated with clinical outcomes such as activities of daily living (ADL), skeletal muscle mass index (SMI), and strength in patients with osteoporotic fractures.
Methods:
This retrospective observational study included patients with osteoporotic fractures admitted to convalescent rehabilitation wards. Changes in phase angle were defined as the difference between the phase angle values at discharge and on admission. The primary outcome was the Functional Independence Measure motor (FIM-motor) score at discharge. The secondary outcomes were SMI and handgrip strength at discharge. We used multivariate analysis to adjust for confounding factors and examine the association between changes in the phase angle and outcomes.
Results:
We analyzed a total of 115 patients (97 women, mean age of 81.0±10.0 years), with a median change in phase angle of 0° during hospitalization. We observed increased phase angles in 49 patients (43%), with a median increase of 0.2°. Multiple regression analysis showed that changes in phase angle were independently associated with FIM-motor score at discharge (β=0.238, p=0.027). Changes in phase angle were not significantly associated with SMI (β=0.059, p=0.599) or handgrip strength (β=-0.032, p=0.773) at discharge.
Conclusion
An increased phase angle during rehabilitation was positively associated with ADL improvement in patients with osteoporotic fractures. These findings may help clinicians make informed decisions regarding patient care and treatment strategies for better outcomes.
9.Association of Phase Angle Dynamics with Sarcopenia and Activities of Daily Living in Osteoporotic Fracture Patients
Yusuke ITO ; Yoshihiro YOSHIMURA ; Fumihiko NAGANO ; Ayaka MATSUMOTO ; Hidetaka WAKABAYASHI
Annals of Geriatric Medicine and Research 2024;28(2):192-200
Background:
This study aimed to determine whether changes in phase angle during rehabilitation are associated with clinical outcomes such as activities of daily living (ADL), skeletal muscle mass index (SMI), and strength in patients with osteoporotic fractures.
Methods:
This retrospective observational study included patients with osteoporotic fractures admitted to convalescent rehabilitation wards. Changes in phase angle were defined as the difference between the phase angle values at discharge and on admission. The primary outcome was the Functional Independence Measure motor (FIM-motor) score at discharge. The secondary outcomes were SMI and handgrip strength at discharge. We used multivariate analysis to adjust for confounding factors and examine the association between changes in the phase angle and outcomes.
Results:
We analyzed a total of 115 patients (97 women, mean age of 81.0±10.0 years), with a median change in phase angle of 0° during hospitalization. We observed increased phase angles in 49 patients (43%), with a median increase of 0.2°. Multiple regression analysis showed that changes in phase angle were independently associated with FIM-motor score at discharge (β=0.238, p=0.027). Changes in phase angle were not significantly associated with SMI (β=0.059, p=0.599) or handgrip strength (β=-0.032, p=0.773) at discharge.
Conclusion
An increased phase angle during rehabilitation was positively associated with ADL improvement in patients with osteoporotic fractures. These findings may help clinicians make informed decisions regarding patient care and treatment strategies for better outcomes.
10.Metal Stent Placement in the Afferent Loop Obstructed by Peritoneal Metastases—Experience of Five Cases.
Yoshihide KANNO ; Tetsuya OHIRA ; Yoshihiro HARADA ; Yoshiki KOIKE ; Taku YAMAGATA ; Megumi TANAKA ; Tomohiro SHIMADA ; Kei ITO
Clinical Endoscopy 2018;51(3):299-303
Afferent loop syndrome is often difficult to resolve. Among patients with afferent loop syndrome whose data were extracted from databases, 5 patients in whom metal stent placement was attempted were included and evaluated in this study. The procedure was technically successful without any adverse events in all patients. Metal stent(s) was placed with an endoscope in the through-the-scope manner in 4 patients and via a percutaneous route in 1 patient. Obvious clinical efficacy was observed in all patients. Adverse events related to the procedure and stent occlusion during the follow-up period were not observed. Metal stent placement for malignant obstruction of the afferent loop was found to be safe and feasible.
Afferent Loop Syndrome
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Endoscopes
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Follow-Up Studies
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Humans
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Intestinal Obstruction
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Palliative Care
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Self Expandable Metallic Stents
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Stents*
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Treatment Outcome