1.Effect of electroacupuncture on exercise-induced oxidative stress
Hideki FUJIMOTO ; Kenji KATAYAMA ; Tomoya HAYASHI ; Keisaku KIMURA ; Tadashi YANO
Journal of the Japan Society of Acupuncture and Moxibustion 2008;58(2):203-212
Objective:It is very important that oxidative stress is estimated for us to understand a player's condition in the field of sports. The purpose of this study was to investigate whether electroacupuncture has an effect on exercise-induced oxidative stress.
Methods:Ten healthy male volunteers participated in both the electroacupuncture (EA) group and the control group in a crossover design. EA at a frequency of 2 Hz and optimum intensity was performed in the subjects for 10 minutes in both the medial vastus muscles. During ergometer exercise by ramp load, respiratory metabolism including the RC point was recorded as the indication of energy metabolism. Blood was collected from the fingertips of the subjects, and then their levels of oxidative stress (d-ROMs test) and antioxidative (BAP test) were determined by using a Free Radical Analytical System (FRAS4, Wismell Instruments). Six measurements were taken;at rest, immediately after EA and following exercise, and at 20, 40, and 60 minutes following exercise.
Results:The RC point was significantly prolonged in the EA group compared with the control group. The level of oxidative stress (d-ROMs test) in the control group increased significantly at 20 minutes following exercise compared with rest (before exercise) and this increase was sustained until 60 minutes after exercise. In contrast, it did not significantly change in the EA group. Whereas the antioxidative level (BAP test) in the EA group significantly increased immediately following exercise compared with rest (before exercise), it did not increase in the control group.
Conclusion:These results suggest that electroacupuncture might enhance the antioxidative level (BAP test) and inhibit the level of oxidative stress (d-ROMs test) by effecting a change in respiratory metabolism. We propose that electroacupuncture might be useful for sports conditioning.
2.Effects of electroacupuncture stimulation on repetitive exercise-induced oxidative stress
Takahito HORINOUCHI ; Tomoya HAYASHI ; Keisaku KIMURA ; Yukihiro YOSHIDA ; Kenji KATAYAMA ; Tadashi YANO
Journal of the Japan Society of Acupuncture and Moxibustion 2012;62(1):38-46
[Objective]Daily repetitive exercise is known to be necessary for players in sports. In this study, to further explore the potential functions of acupuncture, we studied whether electroacupuncture (EA) stimulation has efficacy for repetitive exercise-induced oxidative stress.
[Methods]Six healthy male volunteers participated in both the non-treatment control group and the EA group in a crossover design. EA stimulation was applied to both the medial vastus muscles at 2 Hz and optimum intensity for each subject during ten min just before each exercise period. The subject performed ergometer exercise for 20 min with 75%of maximal oxygen uptake each day. This exercise period was performed once a day for three consecutive days. Blood lactate level (BLL) and plasma lipid peroxide (LP) concentration were measured as the markers for metabolism and oxidative stress, respectively. Visual Analogue Scale (VAS) was used to evaluate the individual level of fatigue due to exercise.
[Results]During and just after the exercise period, each value of BLL in the EA group was lower than the same points in the control group. Whereas LP concentrations before the exercise period on the first day in the control group was higher than the values in the same points on the second and third days. LP concentrations before the exercise period in the EA group were almost the same levels for three days. Furthermore, after the exercise period for the three consecutive days, LP concentrations and VAS in the EA group were lower than each value of the same points in the control group, and especially, the alteration of VAS showed a significant difference.
[Conclusion]The increased tendency of LP concentrations before the exercise period for three days in the control group indicated that repetitive exercise induced the accumulation of excess lipid peroxide. It might be suggested that EA stimulation suppressed subjective fatigue by an enhanced energy metabolic rate and decreased production of lipid peroxide. Hence the evidence strongly supported that EA stimulation might be useful for sports conditioning.
3.Efficacy of a Red-Light Controllable Nitric Oxide Releaser for Neurogenic Erectile Dysfunction: A Study Using a Rat Model of Cavernous Nerve Injury
Taiki MORI ; Yuji HOTTA ; Naoya IEDA ; Tomoya KATAOKA ; Hidehiko NAKAGAWA ; Kazunori KIMURA
The World Journal of Men's Health 2023;41(4):909-919
Purpose:
Neurogenic erectile dysfunction (ED) is a common side effect of radical prostatectomy (RP) because of cavernous nerve damage. In these patients, the production of nitric oxide (NO), which is important for erection, is decreased in the corpus cavernosum. Therefore, NO donors are useful for post-RP ED. However, short half-life and systemic side effects are problems of NO application in ED therapy. To avert these problems, we developed a red-light controllable NO releaser, NORD-1. This study aimed to investigate the effect of NORD-1 and red-light irradiation on neurogenic ED using a rat model of bilateral cavernous nerve injury (BCNI).
Materials and Methods:
BCNI and sham operations were conducted on 8-week-old rats. After 4 weeks, erectile function was evaluated using changes in intracavernous pressure (ICP) during electrostimulation of the cavernous nerve. ICP was measured under three conditions; without NORD-1 and red-light irradiation, with NORD-1 and without red-light irradiation, and with NORD-1 and red-light irradiation. SiR650 which absorbs red-light but does not release NO was used for the negative control. After the experiment, localization of NORD-1 was observed using a microscope.
Results:
Erectile function in a BCNI rat model was significantly decreased compared to sham-operated rats (p<0.05). After injecting NORD-1 into the penis, erectile function did not change without red-light irradiation. However, the combination of NORD-1 and red-light irradiation significantly improved erectile function (p<0.05) without affecting systemic arterial pressure. In contrast, when SiR650 was used, erectile function did not change in all three conditions. NORD-1 was detected only in the corpus cavernosum and not in the urethra and dorsal vein.
Conclusions
NORD-1 combined with red-light irradiation is effective for ED induced by cavernous nerve injury. This treatment may have low risks of hypotension and urinary incontinence, and it can replace the current treatment for post-RP ED.
4.Long-term prognosis of Japanese patients with biologic-naïve Crohn’s disease treated with anti-tumor necrosis factor-α antibodies
Rintaro MOROI ; Katsuya ENDO ; Katsutoshi YAMAMOTO ; Takeo NAITO ; Motoyuki ONODERA ; Masatake KUROHA ; Yoshitake KANAZAWA ; Tomoya KIMURA ; Yoichi KAKUTA ; Atsushi MASAMUNE ; Yoshitaka KINOUCHI ; Tooru SHIMOSEGAWA
Intestinal Research 2019;17(1):94-106
BACKGROUND/AIMS: Few reports have described the long-term treatment outcomes of the anti-tumor necrosis factor-α antibody for Japanese Crohn’s disease (CD) patients. The aim of this study was to evaluate them and clarify the clinical factors that affect the long-term prognosis of the anti-tumor necrosis factor-α treatments. METHODS: This was a retrospective, observational, single-center cohort study. Japanese CD patients treated with either infliximab or adalimumab as a first-line therapy were analyzed. The cumulative retention rates of the biologics, relapse-free survival, and surgery-free survival were analyzed using Kaplan-Meier methods. The clinical factors associated with the long-term outcomes were estimated by both the log-rank test and Cox proportional hazard model. RESULTS: The cumulative retention rate was significantly higher in the group with a concomitant elemental diet of ≥900 kcal/day, baseline C-reactive protein (CRP) levels < 2.6 mg/dL, and baseline serum albumin levels ≥3.5 g/dL, respectively. The baseline serum albumin levels were also associated with both relapse-free and surgery-free survival. The lack of concomitant use of an elemental diet ≥900 kcal/day was identified as the only independent risk factor for the withdrawal of the biologics. CONCLUSIONS: Baseline CRP levels and serum albumin levels could affect the long-term outcomes in CD patients. Concomitant elemental diet of ≥900 kcal/day could have a positive influence on clinical treatment course.
Adalimumab
;
Antibodies
;
Asian Continental Ancestry Group
;
Biological Products
;
C-Reactive Protein
;
Cohort Studies
;
Crohn Disease
;
Food, Formulated
;
Humans
;
Infliximab
;
Necrosis
;
Prognosis
;
Proportional Hazards Models
;
Retrospective Studies
;
Risk Factors
;
Serum Albumin
5.Rimmed Vacuoles in Myositis Associated with Antimitochondrial Antibody
Rui SHIMAZAKI ; Akinori URUHA ; Hideki KIMURA ; Utako NAGAOKA ; Tomoya KAWAZOE ; Satoshi YAMASHITA ; Takashi KOMORI ; Kazuhito MIYAMOTO ; Shiro MATSUBARA ; Keizo SUGAYA ; Masahiro NAGAO ; Eiji SOZAKI
Journal of Clinical Neurology 2020;16(3):510-512