1.The Effects of a Red-Light Controllable Nitric Oxide Donor, NORD-1, on Erectile Dysfunction in Rats with Streptozotocin Induced Diabetes Mellitus
Yuji HOTTA ; Kyoya OYAMA ; Takuma YOSHIDA ; Naoya IEDA ; Taiki MORI ; Yasuhiro HORITA ; Tomoya KATAOKA ; Yoko FURUKAWA-HIBI ; Susumu OHYA ; Hidehiko NAKAGAWA ; Kazunori KIMURA
The World Journal of Men's Health 2025;43(1):197-204
Purpose:
Patients with diabetes mellitus (DM) often exhibit refractory erectile dysfunction (ED). Red-light-controllable nitric oxide donor (NORD-1) and red-light irradiation have successfully enhanced erectile function in intact rats. In this study, we investigated whether the combination of NORD-1 and red-light irradiation effectively treated ED in streptozotocin (STZ)-treated rats with DM.
Materials and Methods:
Seven-week-old male Sprague-Dawley rats were used in this study. Rats in the DM and sham groups received intravenous STZ (50 mg/kg) and saline, respectively. One week after treatment, the blood glucose level of rats in the DM group was >250 mg/dL. Five weeks after the treatment, we performed a functional study by measuring intracavernous pressure (ICP) under cavernous nerve stimulation before and after NORD-1 treatment with and without light irradiation. Additionally, we performed an isometric tension study using the corpus cavernosum of rats treated with NORD-1 or the control compound, SiR650.
Results:
The ICP/mean arterial pressure (MAP) ratio was significantly lower in the DM group than in the sham group before and after NORD-1 treatment without light irradiation (both p<0.05). After NORD-1 treatment with light irradiation, the ICP/MAP ratio in the sham and DM groups was significantly enhanced than before and after NORD-1 treatment without light irradiation (all p<0.05). The ICP/MAP ratio in the DM group after NORD-1 with light irradiation was similar to that in the sham group under normal conditions before NORD-1 treatment. Moreover, the systemic blood pressure was not affected by NORD-1 or light irradiation. In the tension study, the corpus cavernosum of rats treated with SiR650 was not changed by red light in the sham or DM groups. However, the rats treated with NORD-1 were strongly relaxed by red light in both groups.
Conclusions
NORD-1 and red-light irradiation could improve ED in the presence of DM without lowering blood pressure.
2.The Effects of a Red-Light Controllable Nitric Oxide Donor, NORD-1, on Erectile Dysfunction in Rats with Streptozotocin Induced Diabetes Mellitus
Yuji HOTTA ; Kyoya OYAMA ; Takuma YOSHIDA ; Naoya IEDA ; Taiki MORI ; Yasuhiro HORITA ; Tomoya KATAOKA ; Yoko FURUKAWA-HIBI ; Susumu OHYA ; Hidehiko NAKAGAWA ; Kazunori KIMURA
The World Journal of Men's Health 2025;43(1):197-204
Purpose:
Patients with diabetes mellitus (DM) often exhibit refractory erectile dysfunction (ED). Red-light-controllable nitric oxide donor (NORD-1) and red-light irradiation have successfully enhanced erectile function in intact rats. In this study, we investigated whether the combination of NORD-1 and red-light irradiation effectively treated ED in streptozotocin (STZ)-treated rats with DM.
Materials and Methods:
Seven-week-old male Sprague-Dawley rats were used in this study. Rats in the DM and sham groups received intravenous STZ (50 mg/kg) and saline, respectively. One week after treatment, the blood glucose level of rats in the DM group was >250 mg/dL. Five weeks after the treatment, we performed a functional study by measuring intracavernous pressure (ICP) under cavernous nerve stimulation before and after NORD-1 treatment with and without light irradiation. Additionally, we performed an isometric tension study using the corpus cavernosum of rats treated with NORD-1 or the control compound, SiR650.
Results:
The ICP/mean arterial pressure (MAP) ratio was significantly lower in the DM group than in the sham group before and after NORD-1 treatment without light irradiation (both p<0.05). After NORD-1 treatment with light irradiation, the ICP/MAP ratio in the sham and DM groups was significantly enhanced than before and after NORD-1 treatment without light irradiation (all p<0.05). The ICP/MAP ratio in the DM group after NORD-1 with light irradiation was similar to that in the sham group under normal conditions before NORD-1 treatment. Moreover, the systemic blood pressure was not affected by NORD-1 or light irradiation. In the tension study, the corpus cavernosum of rats treated with SiR650 was not changed by red light in the sham or DM groups. However, the rats treated with NORD-1 were strongly relaxed by red light in both groups.
Conclusions
NORD-1 and red-light irradiation could improve ED in the presence of DM without lowering blood pressure.
3.The Effects of a Red-Light Controllable Nitric Oxide Donor, NORD-1, on Erectile Dysfunction in Rats with Streptozotocin Induced Diabetes Mellitus
Yuji HOTTA ; Kyoya OYAMA ; Takuma YOSHIDA ; Naoya IEDA ; Taiki MORI ; Yasuhiro HORITA ; Tomoya KATAOKA ; Yoko FURUKAWA-HIBI ; Susumu OHYA ; Hidehiko NAKAGAWA ; Kazunori KIMURA
The World Journal of Men's Health 2025;43(1):197-204
Purpose:
Patients with diabetes mellitus (DM) often exhibit refractory erectile dysfunction (ED). Red-light-controllable nitric oxide donor (NORD-1) and red-light irradiation have successfully enhanced erectile function in intact rats. In this study, we investigated whether the combination of NORD-1 and red-light irradiation effectively treated ED in streptozotocin (STZ)-treated rats with DM.
Materials and Methods:
Seven-week-old male Sprague-Dawley rats were used in this study. Rats in the DM and sham groups received intravenous STZ (50 mg/kg) and saline, respectively. One week after treatment, the blood glucose level of rats in the DM group was >250 mg/dL. Five weeks after the treatment, we performed a functional study by measuring intracavernous pressure (ICP) under cavernous nerve stimulation before and after NORD-1 treatment with and without light irradiation. Additionally, we performed an isometric tension study using the corpus cavernosum of rats treated with NORD-1 or the control compound, SiR650.
Results:
The ICP/mean arterial pressure (MAP) ratio was significantly lower in the DM group than in the sham group before and after NORD-1 treatment without light irradiation (both p<0.05). After NORD-1 treatment with light irradiation, the ICP/MAP ratio in the sham and DM groups was significantly enhanced than before and after NORD-1 treatment without light irradiation (all p<0.05). The ICP/MAP ratio in the DM group after NORD-1 with light irradiation was similar to that in the sham group under normal conditions before NORD-1 treatment. Moreover, the systemic blood pressure was not affected by NORD-1 or light irradiation. In the tension study, the corpus cavernosum of rats treated with SiR650 was not changed by red light in the sham or DM groups. However, the rats treated with NORD-1 were strongly relaxed by red light in both groups.
Conclusions
NORD-1 and red-light irradiation could improve ED in the presence of DM without lowering blood pressure.
4.The Effects of a Red-Light Controllable Nitric Oxide Donor, NORD-1, on Erectile Dysfunction in Rats with Streptozotocin Induced Diabetes Mellitus
Yuji HOTTA ; Kyoya OYAMA ; Takuma YOSHIDA ; Naoya IEDA ; Taiki MORI ; Yasuhiro HORITA ; Tomoya KATAOKA ; Yoko FURUKAWA-HIBI ; Susumu OHYA ; Hidehiko NAKAGAWA ; Kazunori KIMURA
The World Journal of Men's Health 2025;43(1):197-204
Purpose:
Patients with diabetes mellitus (DM) often exhibit refractory erectile dysfunction (ED). Red-light-controllable nitric oxide donor (NORD-1) and red-light irradiation have successfully enhanced erectile function in intact rats. In this study, we investigated whether the combination of NORD-1 and red-light irradiation effectively treated ED in streptozotocin (STZ)-treated rats with DM.
Materials and Methods:
Seven-week-old male Sprague-Dawley rats were used in this study. Rats in the DM and sham groups received intravenous STZ (50 mg/kg) and saline, respectively. One week after treatment, the blood glucose level of rats in the DM group was >250 mg/dL. Five weeks after the treatment, we performed a functional study by measuring intracavernous pressure (ICP) under cavernous nerve stimulation before and after NORD-1 treatment with and without light irradiation. Additionally, we performed an isometric tension study using the corpus cavernosum of rats treated with NORD-1 or the control compound, SiR650.
Results:
The ICP/mean arterial pressure (MAP) ratio was significantly lower in the DM group than in the sham group before and after NORD-1 treatment without light irradiation (both p<0.05). After NORD-1 treatment with light irradiation, the ICP/MAP ratio in the sham and DM groups was significantly enhanced than before and after NORD-1 treatment without light irradiation (all p<0.05). The ICP/MAP ratio in the DM group after NORD-1 with light irradiation was similar to that in the sham group under normal conditions before NORD-1 treatment. Moreover, the systemic blood pressure was not affected by NORD-1 or light irradiation. In the tension study, the corpus cavernosum of rats treated with SiR650 was not changed by red light in the sham or DM groups. However, the rats treated with NORD-1 were strongly relaxed by red light in both groups.
Conclusions
NORD-1 and red-light irradiation could improve ED in the presence of DM without lowering blood pressure.
5.The Effects of a Red-Light Controllable Nitric Oxide Donor, NORD-1, on Erectile Dysfunction in Rats with Streptozotocin Induced Diabetes Mellitus
Yuji HOTTA ; Kyoya OYAMA ; Takuma YOSHIDA ; Naoya IEDA ; Taiki MORI ; Yasuhiro HORITA ; Tomoya KATAOKA ; Yoko FURUKAWA-HIBI ; Susumu OHYA ; Hidehiko NAKAGAWA ; Kazunori KIMURA
The World Journal of Men's Health 2025;43(1):197-204
Purpose:
Patients with diabetes mellitus (DM) often exhibit refractory erectile dysfunction (ED). Red-light-controllable nitric oxide donor (NORD-1) and red-light irradiation have successfully enhanced erectile function in intact rats. In this study, we investigated whether the combination of NORD-1 and red-light irradiation effectively treated ED in streptozotocin (STZ)-treated rats with DM.
Materials and Methods:
Seven-week-old male Sprague-Dawley rats were used in this study. Rats in the DM and sham groups received intravenous STZ (50 mg/kg) and saline, respectively. One week after treatment, the blood glucose level of rats in the DM group was >250 mg/dL. Five weeks after the treatment, we performed a functional study by measuring intracavernous pressure (ICP) under cavernous nerve stimulation before and after NORD-1 treatment with and without light irradiation. Additionally, we performed an isometric tension study using the corpus cavernosum of rats treated with NORD-1 or the control compound, SiR650.
Results:
The ICP/mean arterial pressure (MAP) ratio was significantly lower in the DM group than in the sham group before and after NORD-1 treatment without light irradiation (both p<0.05). After NORD-1 treatment with light irradiation, the ICP/MAP ratio in the sham and DM groups was significantly enhanced than before and after NORD-1 treatment without light irradiation (all p<0.05). The ICP/MAP ratio in the DM group after NORD-1 with light irradiation was similar to that in the sham group under normal conditions before NORD-1 treatment. Moreover, the systemic blood pressure was not affected by NORD-1 or light irradiation. In the tension study, the corpus cavernosum of rats treated with SiR650 was not changed by red light in the sham or DM groups. However, the rats treated with NORD-1 were strongly relaxed by red light in both groups.
Conclusions
NORD-1 and red-light irradiation could improve ED in the presence of DM without lowering blood pressure.
6.Two Cases of Compulsive Behavior Successfully Treated with Ryokeijutsukanto
Sumihiro KAWAJIRI ; Akira KINEBUCHI ; Takashi ITO ; Yoko KIMURA
Kampo Medicine 2024;75(1):34-38
To date, there have been limited reports on the efficacy of Kampo medicine in treating obsessive compulsive behaviors. To the best of our knowledge, there have been no previous reports on the efficacy of ryokeijutsukanto for obsessive compulsive behaviors. Here, we describe 2 cases of obsessive-compulsive behavior successfully treated with ryokeijutsukanto. Case 1 involved a 30-year-old female patient who presented with vague anxiety. As a result, she spent significant time engaging in compulsive behavior related to checking and was frequently tardy to work. She met the diagnostic criteria for obsessive compulsive disorder. We prescribed ryokeijutsukanto. Her compulsive behavior then improved from 40 minutes to 5 minutes in 56 days. Case 2 involved 57-year-old female patient who complained of not feeling refreshed in the morning. In addition, she had a feeling of gloom, daytime sleepiness and compulsive behavior of checking about 5 times whether windows were locked. We prescribed ryokeijutsukanto. In 14 days, her checking behavior then improved from 5 times to once. Other troublesome symptoms also improved. Ryokeijutsukanto is usually utilized for patients with fluid retention, dizziness, and qi counterflow. However, these 2 cases have qi stagnation rather than qi counterflow. These results suggested that ryokeijutsukanto could also be utilized to treat compulsive behaviors when patients had fluid retention, dizziness and qi stagnation.
7.Policy Advisory Committee Report : Kampo Frailty Score
Kazuyuki ISHIDA ; Yoko KIMURA ; Sadahiro TAMASHIMA
Kampo Medicine 2024;75(1):75-82
“The Kampo Future Vision Study Group responsible for health and medical care of people” was established in 2016 with the aim of discussions to resolve various problems related to Kampo, and issued six proposals as important items. Among these proposals, the emphasized themes that are directly linked to clinical practice are “Kampo as a supportive treatment for cancer” and “Kampo as a countermeasure against frailty in the elderly.” The Japan Society of Oriental Medicine decided on a policy to be involved in these themes and established the Proposal-Discussing Committee (later absorbed into the Policy Advisory Committee). At first, the committee asked experts to present the research status of Kampo medicine as supportive care for cancer and as countermeasures against frailty. The committee, then, decided to lead clinical research by itself on frailty treatment with Kampo medicine. In such clinical research, evaluation criteria for judging therapeutic effects are necessary. Therefore, the existing well-defined diagnostic criteria were combined to create a Kampo frailty score. This article explains the Kampo frailty score, citing the supporting literature.
8.A novel brief questionnaire using a face rating scale to assess dental anxiety and fear
Takuya MINO ; Aya KIMURA-ONO ; Hikaru ARAKAWA ; Kana TOKUMOTO ; Yoko KUROSAKI ; Yoshizo MATSUKA ; Kenji MAEKAWA ; Takuo KUBOKI
The Journal of Advanced Prosthodontics 2024;16(4):244-254
PURPOSE:
This study aimed to evaluate the reliability and validity of a four-item questionnaire using a face rating scale to measure dental trait anxiety (DTA), dental trait fear (DTF), dental state anxiety (DSA), and dental state fear (DSF).
MATERIALS AND METHODS:
Participants were consecutively selected from patients undergoing scaling (S-group; n = 47) and implant placement (I-group; n = 25). The S-group completed the questionnaire both before initial and second scaling, whereas the I-group responded on the pre-surgery day (Pre-day), the day of implant placement (Imp-day), and the day of suture removal (Post-day).
RESULTS:
The reliability in the S-group was evaluated using the test-retest method, showing a weighted kappa value of DTA, 0.61; DTF, 0.46; DSA, 0.67; DSF, 0.52. Criterion-related validity, assessed using the State-Trait Anxiety Inventory’s trait anxiety and state anxiety, revealed positive correlations between trait anxiety and DTA/DTF (DTA, ρ = 0.30; DTF, ρ = 0.27, ρ: correlation coefficient) and between state anxiety and all four items (DTA, ρ = 0.41; DTF, ρ = 0.32; DSA, ρ = 0.25; DSF, ρ = 0.25). Known-group validity was assessed using the initial data and Imp-day data from the S-group and I-group, respectively, revealing significantly higher DSA and DSF scores in the I-group than in the S-group. Responsiveness was gauged using I-group data, showing significantly lower DSA and DSF scores on post-day compared to other days.
CONCLUSION
The newly developed questionnaire has acceptable reliability and validity for clinical use, suggesting its usefulness for research on dental anxiety and fear and for providing patient-specific dental care.
9.Three Cases Demonstrating the Effectiveness of Boiogito Treatment Against Rapid Weight Gain and Edema: Women Suffering from Irregular Menstruation Without Obesity
Kampo Medicine 2023;74(2):156-162
We encountered three patients with edema and menstrual disorder that was improved by boiogito. Case 1 was a 17-year-old woman with fatiguability and irritability, treated with kamishoyosan. After adding boiogito to kamishoyosan because of facial and foot edema, palmar sweating and weight gain, her menstrual period became regular. Case 2 was a 15-year-old woman with headache as well as facial and foot edema, who was receiving goreisan. She complained of knee discomfort and worried about weight gain even though she was thin. So we prescribed her boiogito, and her menstrual disorder improved. Case 3 was a 42-year-old woman with fluid retention, who suffered from general fatigue, coldness, and menstrual disorder. She was prescribed boiogito because of weight gain as well as foot edema and coldness, and her menstrual cycle gradually became regular. Boiogito appears to be effective in patients with menstrual disorder who show “exterior deficiency edema” that is maldistribution of fluid on the body surface, such as water retention, sweating, or edema. Boiogito resulted in a feeling of lightness. Even if water retention is not clearly observed, the symptoms of rapid weight gain, edema or edematous feeling, and subjective coldness may be indications for boiogito.
10.Rating criteria to evaluate student performance in digital wax-up training using multi-purpose software
Takuya MINO ; Yoko KUROSAKI ; Kana TOKUMOTO ; Takaharu HIGUCHI ; Shinichi NAKANODA ; Ken NUMOTO ; Ikue TOSA ; Aya KIMURA-ONO ; Kenji MAEKAWA ; Tae Hyung KIM ; Takuo KUBOKI
The Journal of Advanced Prosthodontics 2022;14(4):203-211
PURPOSE:
. The aim of this study was to introduce rating criteria to evaluate student performance in a newly developed, digital wax-up preclinical program for computer-aided design (CAD) of full-coverage crowns and preliminarily investigate the reliability and internal consistency of the rating system.
MATERIALS AND METHODS:
. This study, conducted in 2017, enrolled 47 fifth-year dental students of Okayama University Dental School. Digital wax-up training included a fundamental practice using computer graphics (CG), multipurpose CAD software programs, and an advanced practice to execute a digital waxup of the right mandibular second molar (#47). Each student’s digital wax-up work (stereolithography data) was evaluated by two instructors using seven qualitative criteria. The total qualitative score (0-90) of the criteria was calculated.The total volumetric discrepancy between each student’s digital wax-up work and a reference prepared by an instructor was automatically measured by the CAD software. The inter-rater reliability of each criterion was analyzed using a weighted kappa index. The relationship between the total volume discrepancy and the total qualitative score was analyzed using Spearman’s correlation.
RESULTS:
. The weighted kappa values for the seven qualitative criteria ranged from 0.62 - 0.93. The total qualitative score and the total volumetric discrepancy were negatively correlated (ρ = -0.27, P = .09, respectively); however, this was not statistically significant.
CONCLUSION
. The established qualitative criteria to evaluate students’ work showed sufficiently high inter-rater reliability; however, the digitally measured volumetric discrepancy could not sufficiently predict the total qualitative score.


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