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Bai Y, Li S. Oxidative Stress Sensing System for 8-OHdG Detection Based on Plasma Coupled Electrochemistry by Transparent ITO/AuNTAs/PtNPs Electrode. BIOSENSORS 2023; 13:643. [PMID: 37367008 DOI: 10.3390/bios13060643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/01/2023] [Accepted: 06/09/2023] [Indexed: 06/28/2023]
Abstract
8-Hydroxydeoxyguanosine (8-OHdG) is the most widely used oxidative stress biomarker of the free radical-induced oxidative damage product of DNA, which may allow a premature assessment of various diseases. This paper designs a label-free, portable biosensor device to directly detect 8-OHdG by plasma-coupled electrochemistry on a transparent and conductive indium tin oxide (ITO) electrode. We reported a flexible printed ITO electrode made from particle-free silver and carbon inks. After inkjet printing, the working electrode was sequentially assembled by gold nanotriangles (AuNTAs) and platinum nanoparticles (PtNPs). This nanomaterial-modified portable biosensor showed excellent electrochemical performance for 8-OHdG detection from 10 μg/mL to 100 μg/mL by our self-developed constant voltage source integrated circuit system. This work demonstrated a portable biosensor for simultaneously integrating nanostructure, electroconductivity, and biocompatibility to construct advanced biosensors for oxidative damage biomarkers. The proposed nanomaterial-modified ITO-based electrochemical portable device was a potential biosensor to approach 8-OHdG point-of-care testing (POCT) in various biological fluid samples, such as saliva and urine samples.
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Affiliation(s)
- Yongchang Bai
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Shuang Li
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
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Jameel M, Alam MF, Fatma H, Singh D, Khan MA, Qureshi MA, Javed S, Younus H, Jamal K, Siddique HR. Flubendiamide induced genetic and cellular damages directly influence the life cycle of the oriental leaf worm, Spodoptera litura. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 193:105448. [PMID: 37248017 DOI: 10.1016/j.pestbp.2023.105448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/11/2023] [Accepted: 04/29/2023] [Indexed: 05/31/2023]
Abstract
Indiscriminate uses of insecticide greatly damage the environment as well as non-target organisms. Thus, multiple levels of bioassays can help better management of our environment. Flubendiamide is a phthalic acid diamide insecticide that ceases the function of insect muscle leading to paralysis and death. Here, we aimed to explore the effects of Flubendiamide on the life cycle of Spodoptera litura vis-a-vis the mode of action. Fourth instar larvae of the same age (120 ± 2 h) and size were fed with different concentrations (20-80 μg/mL) of Flubendiamide for 12-72 h. We performed a pharmacokinetics study, different biochemical assays, p450, Ecdysone receptor (EcR) and other genes expression analyses by Real-Time PCR and gross damages by Dye exclusion assay and histopathology. Our results demonstrate that the mean concentration of Flubendiamide after 48 h is 9.907 μg/mL and (i) altered the molting, metamorphosis, and reproduction at 80 μg/mL (24 h) (ii) increases all oxidative stress parameters (ROS/RNS, MDA, 8OHdG), decreases oxidative defense mechanisms (SOD, CAT, GST) at 80 μg/mL (48 h) and p450 in a time and concentration-dependent manner, (iii) activates CncC/Maf apoptotic pathways at 80 μg/mL concentration at 24 h while the expression declined from 48 h onwards, (iii) downregulates the EcR expression in a time and concentration-dependent manner, which might be responsible for disturbed molting, metamorphosis, and reproduction, and (iv) increase the expression of apoptotic genes (Caspase 1, -3, and - 5), in time and concentration-dependent manner causing gross morphological and histological damages. In conclusion, indiscriminate use of this insecticide can affect the ecosystem and have the capacity to cause multiple hazardous effects on experimental organisms. Thus, it warrants further investigations to improve and optimize the integrated pest management packages, including Flubendiamide for better management.
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Affiliation(s)
- Mohd Jameel
- Department of Zoology, Aligarh Muslim University, Aligarh 202002, India
| | - Md Fazle Alam
- Institute of Biomedical Science, Fudan University, Shanghai 200437, China; Department of Biomedical Sciences, College of Rockford, University of Illinois, Chicago, United States of America
| | - Homa Fatma
- Department of Zoology, Aligarh Muslim University, Aligarh 202002, India
| | - Deepti Singh
- Department of Zoology, Aligarh Muslim University, Aligarh 202002, India
| | | | - Mohd Aamir Qureshi
- Department of Biochemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Saleem Javed
- Department of Biochemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Hina Younus
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Khowaja Jamal
- Department of Zoology, Aligarh Muslim University, Aligarh 202002, India.
| | - Hifzur R Siddique
- Department of Zoology, Aligarh Muslim University, Aligarh 202002, India.
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de Oliveira ACF, Brito VGB, Ramos GHADS, Werlang MLC, Fiais GA, Dornelles RCM, Antoniali C, Nakamune ACMS, Fakhouri WD, Chaves-Neto AH. Analysis of salivary flow rate, biochemical composition, and redox status in orchiectomized spontaneously hypertensive rats. Arch Oral Biol 2023; 152:105732. [PMID: 37257259 DOI: 10.1016/j.archoralbio.2023.105732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 06/02/2023]
Abstract
OBJECTIVE This study aimed to analyze the salivary flow rate, biochemical composition, and redox status in orchiectomized spontaneously hypertensive rats (SHR) compared to normotensive Wistar rats. DESIGN Thirty-two young adult male SHR and Wistar (3-months-old) rats were randomly distributed into four groups; either castrated bilaterally (ORX) or underwent fictitious surgery (SHAM) as Wistar-SHAM, Wistar-ORX, SHR-SHAM, and SHR-ORX. Two months beyond castration, pilocarpine-induced salivary secretion was collected from 5-month-old rats to analyze salivary flow rate, pH, buffer capacity, total protein, amylase, calcium, phosphate, sodium, potassium, chloride, thiobarbituric acid reactive substances (TBARs), carbonyl protein, nitrite, and total antioxidant capacity. RESULTS The salivary flow rate was higher in the Wistar-ORX compared to the Wistar-SHAM group, while remaining similar between the SHR-SHAM and SHR-ORX groups. ORX did not affect pH and salivary buffer capacity in both strains. However, salivary total protein and amylase were significantly reduced in the Wistar-ORX and SHR-ORX compared to the respective SHAM groups. In both ORX groups, salivary total antioxidant capacity and carbonylated protein were increased, while lipid oxidative damage (TBARs) and nitrite concentration were higher only in the Wistar-ORX than in the Wistar-SHAM group. In the Wistar-ORX and SHR-ORX, the salivary calcium, phosphate, and chloride were increased while no change was detected in the SHAM groups. Only salivary buffering capacity, calcium, and chloride in the SHR-ORX adjusted to values similar to Wistar-SHAM group. CONCLUSION Hypertensive phenotype mitigated the orchiectomy-induced salivary dysfunction, since the disturbances were restricted to alterations in the salivary biochemical composition and redox state.
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Affiliation(s)
| | - Victor Gustavo Balera Brito
- Department of Basic Sciences, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil; Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas - SBFis, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil
| | | | - Matheus Lima Cypriano Werlang
- Department of Basic Sciences, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil; Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas - SBFis, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - Gabriela Alice Fiais
- Department of Basic Sciences, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil; Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas - SBFis, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - Rita Cássia Menegati Dornelles
- Department of Basic Sciences, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil; Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas - SBFis, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - Cristina Antoniali
- Department of Basic Sciences, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil; Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas - SBFis, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil; Programa de Pós-Graduação em Ciência Odontológica, School of Dentistry, Araçatuba, São Paulo, Brazil
| | | | - Walid D Fakhouri
- Center for Craniofacial Research, Department of Diagnostic and Biomedical Sciences, School of Dentistry, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Antonio Hernandes Chaves-Neto
- Department of Basic Sciences, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil; Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas - SBFis, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil; Programa de Pós-Graduação em Ciência Odontológica, School of Dentistry, Araçatuba, São Paulo, Brazil.
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Fujita N, Momota M, Ishida M, Iwane T, Hatakeyama S, Yoneyama T, Hashimoto Y, Yoshikawa K, Yamaya K, Ohyama C. Association of oxidative stress with erectile dysfunction in community-dwelling men and men on dialysis. Aging Male 2022; 25:193-201. [PMID: 35916472 DOI: 10.1080/13685538.2022.2103113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
OBJECTIVES To investigate the association between oxidative stress and erectile dysfunction (ED) in community-dwelling men and men on dialysis. METHODS This cross-sectional study included 398 community-dwelling men and 42 men on dialysis. Oxidative stress was assessed using 8-hydroxy-2'-deoxyguanosine (8-OHdG). Univariable and multivariable logistic regression analyses were performed to evaluate the association between oxidative stress and ED. RESULTS Spearman's rank correlation test showed no significant correlation between urine 8-OHdG levels and the 5-Item International Index of Erectile Function scores in community-dwelling men (ρ = -0.005, p = 0.917) and between plasma 8-OHdG levels and the Sexual Health Inventory for Men scores in men on dialysis (ρ = 0.166, p = 0.295). In community-dwelling men, univariable and multivariable analyses revealed that urine 8-OHdG level was not significantly associated with ED (odds ratio [OR]: 1.005, 95% confidence interval [CI]: 0.884-1.144, p = 0.934; OR: 0.930, 95% CI: 0.798-1.084, p = 0.353; respectively). In men on dialysis, univariable analyses revealed that plasma 8-OHdG level was not significantly associated with severe ED (OR: 0.967, 95% CI: 0.876-1.066, p = 0.498). CONCLUSIONS Oxidative stress was not significantly associated with ED prevalence and severity in community-dwelling men and men on dialysis.
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Affiliation(s)
- Naoki Fujita
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Masaki Momota
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Mizuri Ishida
- Department of Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Takuro Iwane
- Department of Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Shingo Hatakeyama
- Department of Advanced Blood Purification Therapy, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Takahiro Yoneyama
- Department of Advanced Transplant and Regenerative Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Yasuhiro Hashimoto
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | | | - Kanemitsu Yamaya
- Department of Urology, Oyokyo Kidney Research Institute, Hirosaki, Japan
| | - Chikara Ohyama
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
- Department of Advanced Blood Purification Therapy, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
- Department of Advanced Transplant and Regenerative Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
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Hussein HA, Hassaneen ASA, Ali ME, Sindi RA, Ashour AM, Fahmy SM, Swelum AA, Ahmed AE. The Impact of Rumen-Protected L-Arginine Oral Supplementation on Libido, Semen Quality, Reproductive Organ Biometry, and Serum Biochemical Parameters of Rams. Front Vet Sci 2022; 9:899434. [PMID: 35812886 PMCID: PMC9263849 DOI: 10.3389/fvets.2022.899434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 05/13/2022] [Indexed: 11/26/2022] Open
Abstract
This study aimed to investigate the effect of oral supplementation of rumen-protected L-arginine on semen quality, testes, and accessory genital glands biometry in rams. Ten apparently healthy and fertile rams were randomly divided into two equal groups; control, and rumen-protected L-arginine (20 mg/Kg body weight for 30 days) treated group. In all rams, ultrasonographic measurements of the testes and the accessory genital glands and blood sampling were performed at day (D)10, D20, and D30 (D0 is the start of supplementation). Semen ejaculates were collected twice/week and semen quantity, and quality was examined. Our results showed that, in the L-arginine treated group, there were significant increase in the ultrasound biometric measurement of right seminal vesicle (RSV) and right Cowper's gland (RCG) at D10, both testes, tail of the epididymis (TE), SV, and CG of both sides at D20, and of both testes, RTE, RSV, RCG, and LSV at D30. Semen quality and quantity parameters were significantly improved in L-arginine treated group. Moreover, testosterone level in the L-arginine treated group was significantly higher than that in the Control group. Serum thyroxine and glutathione peroxidase concentrations were significantly higher in the L-arginine treated group. The present study concluded that oral supplementation with rumen-protected L-arginine is beneficial in improvement of rams' fertility.
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Affiliation(s)
- Hassan A. Hussein
- Department of Theriogenology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Ahmed S. A. Hassaneen
- Department of Theriogenology, Obstetrics, and Artificial Insemination, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt
| | - Montaser E. Ali
- Department of Animal Production, Faculty of Agriculture, Al-Azhar University “Assiut Branch”, Assiut, Egypt
| | - Ramya A. Sindi
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Umm Al-Qura University, Mecca, Saudi Arabia
| | - Abdallah M. Ashour
- Department of Animal Production, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
| | - Salem M. Fahmy
- Department of Animal Production, Faculty of Agriculture, Al-Azhar University “Assiut Branch”, Assiut, Egypt
| | - Ayman A. Swelum
- Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
- *Correspondence: Ayman A. Swelum
| | - Ahmed E. Ahmed
- Department of Biology, College of Science, King Khalid University, Abha, Saudi Arabia
- Department of Theriogenology, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt
- Ahmed E. Ahmed
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Takeuchi H, Okubo H. Clinical efficiency of combination therapy using testosterone replacement therapy, phosphodiesterase 5 inhibitors and Kampo herbal medicine for eugonadal patients with late-onset hypogonadism syndrome. Exp Ther Med 2021; 22:1173. [PMID: 34504618 PMCID: PMC8393732 DOI: 10.3892/etm.2021.10608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 06/17/2020] [Indexed: 11/17/2022] Open
Abstract
In the present study, the initial treatment efficiency of combination therapy using testosterone replacement therapy (TRT), herbal medicine and phosphodiesterase 5 inhibitors (PDE5i) in male patients with late-onset hypogonadism (LOH) were assessed. A total of 21 patients were enrolled and after 12 weeks, the clinical efficacy was evaluated based on improvement of LOH symptoms via laboratory parameters and several questionnaires, including the Ageing Males' Symptoms (AMS) scale. The overall AMS scores, as well as the psychological, physical and sexual AMS factors prior to and after treatment in the TRT, testosterone enanthate (T enanthate) monotherapy and T enanthate + PDE5i treatment groups were significantly improved. In the herbal medicine group, only the AMS physiological factors were significantly improved after treatment compared with the baseline. The improvement of the overall AMS scores, as well as the physiological and sexual AMS factors, were significantly negatively correlated with the free testosterone (FT) value prior to treatment. In conclusion, treatment with combination therapy using TRT, herbal medicine and PDE5i improved AMS scores in patients with LOH syndrome. Particularly in patients with LOH syndrome and low FT, the symptoms were significantly improved following combination therapy.
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Affiliation(s)
- Hisashi Takeuchi
- Department of Urology, Kyoeikai Okubo Hospital, Mitoshi, Ibaraki 310-0905, Japan.,Department of Urology, Tokyo International Ohori Hospital, Tokyo 181-0013, Japan
| | - Hidenori Okubo
- Department of Urology, Kyoeikai Okubo Hospital, Mitoshi, Ibaraki 310-0905, Japan
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Shiraishi K, Ohmi C, Matsuyama H. Patient-reported outcomes and biochemical alterations during hormonal therapy in men with hypogonadotropic hypogonadism who have finished infertility treatment. Endocr J 2021; 68:221-229. [PMID: 33012744 DOI: 10.1507/endocrj.ej20-0365] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Male hypogonadotropic hypogonadism (MHH) is effectively treated by gonadotropins with a high rate of ejaculate sperm and paternity; however, there is no information regarding the appropriate management, including patient-reported outcomes (PROs), of men with MHH who have finished infertility treatment. To compare health-related quality of life, erectile function and biochemical alterations in men with MHH who were treated with testosterone replacement therapy (TRT) or human chorionic gonadotropin (hCG). Twenty-six MHH patients (mean age: 34 years) who needed to improve their androgen deficiency symptoms underwent either hCG therapy (n = 16, started with self-injection of 2,000-7,500 IU per week) or TRT (n = 10, testosterone enanthate 250 mg every 3 weeks). The 36-item Short Form Health Survey (SF-36) questionnaire, five-item International Index of Erectile Function (IIEF-5) and hormonal and biochemical analyses were assessed every 3 months. Changes and comparison of each treatment regarding these parameters were analyzed. Both hCG and TRT significantly improved all domains of the SF-36, except for bodily pain and social functioning. hCG significantly improved the general and mental health domains compared with TRT. Significant improvements in IIEF-5 were observed with both treatments, showing significant improvement with hCG compared to TRT. TRT caused progressive testicular atrophy. There were significant decreases in waist circumference and triglycerides in both treatment groups and significant elevations in prostate-specific antigen and hematocrit. Both hCG and TRT are effective and safe, with preferable PROs by hCG, for treating androgen deficiency in men with MHH who do not need infertility treatment.
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Affiliation(s)
- Koji Shiraishi
- Department of Urology, Yamaguchi University School of Medicine, Yamaguchi, Japan
| | - Chietaka Ohmi
- Department of Urology, Yamaguchi University School of Medicine, Yamaguchi, Japan
| | - Hideyasu Matsuyama
- Department of Urology, Yamaguchi University School of Medicine, Yamaguchi, Japan
- Department of Urology, Ube-kohsan Central Hospital, Yamaguchi, Japan
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Xu Z, Liu C, Liu S, Zhou Z. Comparison of efficacy and safety of daily oral L-arginine and PDE5Is alone or combination in treating erectile dysfunction: A systematic review and meta-analysis of randomised controlled trials. Andrologia 2021; 53:e14007. [PMID: 33587304 DOI: 10.1111/and.14007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/22/2021] [Accepted: 01/25/2021] [Indexed: 12/13/2022] Open
Abstract
The meta-analysis was performed to assess the efficacy and safety of daily oral L-arginine and phosphodiesterase type 5 inhibitors (PDE5Is) alone or combination in treating patients with erectile dysfunction (ED). We performed a search of randomised controlled trials in the following databases: PubMed, EMBASE and Cochrane Library databases. Four articles including 373 patients were studied. Erectile functions were significantly improved in three therapy groups compared with baseline. Patients who received the combination of L-arginine and PDE5Is showed significant improvement compared to those treated with L-arginine and PDE5Is alone, as assessed by sexual function index (p <0.00001 and p =0.005, respectively) and total testosterone (p <0.00001 and p =0.0007, respectively). Furthermore, patients who treated with PDE5Is alone exhibited the better efficacy than those treated with L-arginine alone in respects of sexual function index (p <0.00001) and total testosterone (p =0.0001). However, the combination of L-arginine and PDE5Is had no obvious difference relative to PDE5Is alone in terms of various adverse events (AEs). Conclusively, compared with monotherapy, the combination of L-arginine and PDE5Is showed a greater improvement of sexual function and total testosterone, and did not significantly increase the AEs. Besides, PDE5Is alone revealed a better effect than those treated with L-arginine alone for patients with ED.
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Affiliation(s)
- Zhunan Xu
- Second Clinical Medical College, Binzhou Medical University, Yantai, China.,Department of Urology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Chu Liu
- Department of Urology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Shuang Liu
- School of Rehabilitation Medicine, Binzhou Medical University, Yantai, China
| | - Zhongbao Zhou
- Department of Urology, Beijing TianTan Hospital, Capital Medical University, Beijing, China
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Abu El‐Hamd M, Hegazy EM. Comparison of the clinical efficacy of daily use of L‐arginine, tadalafil and combined L‐arginine with tadalafil in the treatment of elderly patients with erectile dysfunction. Andrologia 2020; 52:e13640. [DOI: 10.1111/and.13640] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 03/10/2020] [Accepted: 04/19/2020] [Indexed: 12/30/2022] Open
Affiliation(s)
- Mohammed Abu El‐Hamd
- Dermatology, Venereology and Andrology Department Faculty of Medicine Sohag University Sohag Egypt
| | - Eisa Mohammed Hegazy
- Dermatology, Venereology and Andrology Department Faculty of Medicine South Valley University Qena Egypt
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Itoga A, Zha X, Nagase K, Aoki Y, Ito H, Yokoyama O. Correcting imbalance of sex hormones by a phosphodiesterase 5 inhibitor improves copulatory dysfunction in male rats with type 2 diabetes. BMJ Open Diabetes Res Care 2020; 8:8/1/e001111. [PMID: 32371530 PMCID: PMC7228473 DOI: 10.1136/bmjdrc-2019-001111] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 03/19/2020] [Accepted: 03/24/2020] [Indexed: 12/22/2022] Open
Abstract
INTRODUCTION Sexual dysfunction is a common complication in men with type 2 diabetes and is often refractory to treatment. This study investigated the long-term influence of the phosphodiesterase 5 inhibitor (PDE5I) tadalafil on the level of sex hormones and sexual function in male Otsuka Long-Evans Tokushima Fatty (OLETF) rats as an animal model of spontaneous type 2 diabetes. RESEARCH DESIGN AND METHODS We treated 36-week-old male OLETF and non-diabetic Long-Evans Tokushima Otsuka (LETO) rats with oral tadalafil (100 µg/kg/day) for 12 weeks; sham groups received vehicle for 12 weeks. Before and after tadalafil treatment, serum levels of total and free testosterone, estradiol, luteinizing hormone (LH), follicle-stimulating hormone and proinflammatory cytokines were compared among four treatment groups. Copulatory function was examined by matching each rat to an estrous female. After completion of the experiment, total fat mass in the abdomen was measured. RESULTS Testosterone levels were significantly lower in OLETF versus LETO rats at 36 weeks. After 12 weeks of tadalafil treatment, levels of testosterone were significantly increased both in OLETF-tadalafil and LETO-tadalafil groups versus vehicle groups. Tadalafil decreased estradiol levels both in OLETF and LETO rats. Furthermore, tadalafil increased serum LH levels with a reduction of proinflammatory cytokines. Total fat mass was significantly lower in the OLETF-tadalafil group versus the OLETF-vehicle group. A significant suppression of copulatory behavior, that is, elongation of intromission latency was found in OLETF rats. However, tadalafil treatment for 12 weeks shortened the intromission latency. CONCLUSION Our results indicate that tadalafil treatment might improve copulatory disorder in the type 2 diabetic model via improvement of an imbalance in sex hormones and an increase in LH levels.
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Affiliation(s)
- Akiko Itoga
- Department of Urology, Faculty of Medical Science, University of Fukui, Eiheiji-cho, Yoshida-gun, Fukui, Japan
| | - Xinmin Zha
- Department of Urology, Faculty of Medical Science, University of Fukui, Eiheiji-cho, Yoshida-gun, Fukui, Japan
| | - Keiko Nagase
- Department of Urology, Faculty of Medical Science, University of Fukui, Eiheiji-cho, Yoshida-gun, Fukui, Japan
| | - Yoshitaka Aoki
- Department of Urology, Faculty of Medical Science, University of Fukui, Eiheiji-cho, Yoshida-gun, Fukui, Japan
| | - Hideaki Ito
- Department of Urology, Faculty of Medical Science, University of Fukui, Eiheiji-cho, Yoshida-gun, Fukui, Japan
| | - Osamu Yokoyama
- Department of Urology, Faculty of Medical Science, University of Fukui, Eiheiji-cho, Yoshida-gun, Fukui, Japan
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Rong S, Pan D, Li X, Gao M, Yu H, Jiang J, Zhang Z, Zeng D, Pan H, Chang D. Highly Sensitive Chitosan and ZrO2 Nanoparticles-Based Electrochemical Sensor for 8-Hydroxy-2’-deoxyguanosine Determination. CURR ANAL CHEM 2019. [DOI: 10.2174/1573411014666180501153300] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Background:
8-Hydroxy-2’-deoxyguanosine (8-OHdG) has been regarded as a typical stable
biomarker of DNA oxidative damage, and its level is one of the criteria for early diagnosis of various
diseases. Considering the significance of 8-OhdG, various analytical techniques have been used for
assaying 8-OHdG but all of them suffer from basic limitations like highly expensive instrumentation,
large amount of sample requirement, complicated sample pre-treatment, tedious and time-consuming
procedures etc. However, electroanalytical sensors provide a faster, easy and sensitive means of
analyzing.
Methods:
The chitosan (CS) film provided the high electrode activity and stability which is required for
detecting 8-OHdG though direct electrochemical oxidation. Zirconia was employed because it has some
unique properties, such as high redox activity and selectivity etc. High-performance composite was
easily detected by differential pulse voltammetry at a working voltage of 0. 51 V (vs. Ag/AgCl). A rapid
and sensitive electrochemical sensor based on CS and metal oxide nanocrystalline for the determination
of 8-OHdG was established.
Results:
Under optimized experimental conditions, the peak currents of differential pulse voltammetry
increased as the concentrations of 8-OHdG increased from 10 to 200 ng·mL-1. The detection limit was
3.67 ng·mL-1 which was calculated by the S/N ratio of 3. The recoveries of the real spiked samples are
in the range between 93.2 to 105.3%.
Conclusion:
The electrochemical sensor for direct 8-OHdG determination using a new CS/zirconia
composite for GCE modification was developed and showed excellent reproducibility, stability and
sensitivity for the specific determination of 8-OHdG in real urine specimen.
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Affiliation(s)
- Shengzhong Rong
- Public Health School, Mudanjiang Medical College, Mudanjiang, Heilongjiang, 157011, China
| | - Deng Pan
- Medical School, Southeast University, Nanjing 210009, China
| | - Xuehui Li
- College of Public Administration, Nanjing Agricultural University Nanjing 210095, China
| | - Mucong Gao
- Public health school, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Hongwei Yu
- Department of Clinical Laboratory, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, 201399, China
| | - Jinghui Jiang
- Clinical Laboratory, the First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Ze Zhang
- Department of Clinical Laboratory, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, 201399, China
| | - Dongdong Zeng
- Cooperation Study Center, School of Medicine and Technology, Shanghai University of Medical & Health Sciences, Shanghai, 201318, China
| | - Hongzhi Pan
- Cooperation Study Center, School of Medicine and Technology, Shanghai University of Medical & Health Sciences, Shanghai, 201318, China
| | - Dong Chang
- Department of Clinical Laboratory, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, 201399, China
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12
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Kaufman MJ, Kanayama G, Hudson JI, Pope HG. Supraphysiologic-dose anabolic-androgenic steroid use: A risk factor for dementia? Neurosci Biobehav Rev 2019; 100:180-207. [PMID: 30817935 PMCID: PMC6451684 DOI: 10.1016/j.neubiorev.2019.02.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 02/13/2019] [Accepted: 02/17/2019] [Indexed: 02/06/2023]
Abstract
Supraphysiologic-dose anabolic-androgenic steroid (AAS) use is associated with physiologic, cognitive, and brain abnormalities similar to those found in people at risk for developing Alzheimer's Disease and its related dementias (AD/ADRD), which are associated with high brain β-amyloid (Aβ) and hyperphosphorylated tau (tau-P) protein levels. Supraphysiologic-dose AAS induces androgen abnormalities and excess oxidative stress, which have been linked to increased and decreased expression or activity of proteins that synthesize and eliminate, respectively, Aβ and tau-P. Aβ and tau-P accumulation may begin soon after initiating supraphysiologic-dose AAS use, which typically occurs in the early 20s, and their accumulation may be accelerated by other psychoactive substance use, which is common among non-medical AAS users. Accordingly, the widespread use of supraphysiologic-dose AAS may increase the numbers of people who develop dementia. Early diagnosis and correction of sex-steroid level abnormalities and excess oxidative stress could attenuate risk for developing AD/ADRD in supraphysiologic-dose AAS users, in people with other substance use disorders, and in people with low sex-steroid levels or excess oxidative stress associated with aging.
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Affiliation(s)
- Marc J Kaufman
- McLean Imaging Center, McLean Hospital, 115 Mill St., Belmont, MA 02478, USA; Department of Psychiatry, Harvard Medical School, Boston, MA 02115, USA.
| | - Gen Kanayama
- Biological Psychiatry Laboratory, McLean Hospital, 115 Mill St., Belmont, MA 02478, USA; Department of Psychiatry, Harvard Medical School, Boston, MA 02115, USA
| | - James I Hudson
- Biological Psychiatry Laboratory, McLean Hospital, 115 Mill St., Belmont, MA 02478, USA; Department of Psychiatry, Harvard Medical School, Boston, MA 02115, USA
| | - Harrison G Pope
- Biological Psychiatry Laboratory, McLean Hospital, 115 Mill St., Belmont, MA 02478, USA; Department of Psychiatry, Harvard Medical School, Boston, MA 02115, USA
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13
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Hisasue SI, China T, Horiuchi A, Kimura M, Saito K, Isotani S, Ide H, Muto S, Yamaguchi R, Horie S. Impact of aging and comorbidity on the efficacy of low-intensity shock wave therapy for erectile dysfunction. Int J Urol 2015; 23:80-4. [DOI: 10.1111/iju.12955] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 09/03/2015] [Indexed: 01/28/2023]
Affiliation(s)
- Shin-ichi Hisasue
- Department of Urology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Toshiyuki China
- Department of Urology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Akira Horiuchi
- Department of Urology; Teikyo University School of Medicine; Tokyo Japan
| | - Masaki Kimura
- Department of Urology; Teikyo University School of Medicine; Tokyo Japan
| | - Keisuke Saito
- Department of Urology; Teikyo University School of Medicine; Tokyo Japan
| | - Shuji Isotani
- Department of Urology; Teikyo University School of Medicine; Tokyo Japan
| | - Hisamitsu Ide
- Department of Urology; Teikyo University School of Medicine; Tokyo Japan
| | - Satoru Muto
- Department of Urology; Teikyo University School of Medicine; Tokyo Japan
| | - Raizo Yamaguchi
- Department of Urology; Teikyo University School of Medicine; Tokyo Japan
| | - Shigeo Horie
- Department of Urology; Juntendo University Graduate School of Medicine; Tokyo Japan
- Department of Urology; Teikyo University School of Medicine; Tokyo Japan
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14
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Hisasue SI. Contemporary perspective and management of testosterone deficiency: Modifiable factors and variable management. Int J Urol 2015; 22:1084-95. [DOI: 10.1111/iju.12880] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Accepted: 06/16/2015] [Indexed: 01/10/2023]
Affiliation(s)
- Shin-ichi Hisasue
- Department of Urology; Graduate School of Medicine; Juntendo University; Tokyo Japan
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15
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Shiraishi K, Oka S, Matsuyama H. Assessment of quality of life during gonadotrophin treatment for male hypogonadotrophic hypogonadism. Clin Endocrinol (Oxf) 2014; 81:259-65. [PMID: 24612103 DOI: 10.1111/cen.12435] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 01/21/2014] [Accepted: 02/17/2014] [Indexed: 12/31/2022]
Abstract
OBJECTIVE The management of male hypogonadotrophic hypogonadism (MHH) with gonadotrophins is effective in promoting genital development and spermatogenesis. We investigated the changes in SF-36 subscales, including physical, social and psychological QOL, during gonadotrophin or testosterone treatment and analysed the factors that are involved in the outcomes of health-related quality of life (HRQOL) in MHH patients. PATIENTS AND DESIGN Thirty-seven MHH patients (mean age: 26.1 years old) who underwent gonadotrophin (n = 31) or testosterone treatment (n = 6), excluding infertility cases, were asked to respond to a SF-36 questionnaire before and every 6 months during the 2-year treatment period. The changes in SF-36 domains and the associations between improvements and patient factors were examined. RESULTS The scores in all of the SF-36 domains were lower than in the normal Japanese population. In all eight domains, except for bodily pain and social functioning, the mean scores for physical function (PF), role-physical (RP), general health (GH), vitality (VT), role-emotional (RE) and mental health (MH) significantly increased over the course of treatment in patients with gonadotrophin. These changes were particularly noticeable in the psychological domains; GH, VT, RE and MH exhibited large increases 18 months after treatment. Testosterone treatment increased only PF and RP domains. In patients with sperm in their ejaculate, the improvements in GH, VT, RE and MH were significantly greater than those who did not exhibit sperm. CONCLUSION Gonadotrophin treatment for MHH was associated with significant improvements in SF-36 domains. Gonadotrophin treatment could prevent negative physical and psychological sequelae in the management of MHH.
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Affiliation(s)
- Koji Shiraishi
- Department of Urology, Graduate School of Medicine, Yamaguchi University, Ube, Japan
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16
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Masuda H, Hisasue SI, Murata H, Ide H, Akishita M, Akiyama H, Horie S. The Impact of Salivary Testosterone Levels on the Quality of Life of a Community-Based Population in Japan. JOURNAL OF MEN'S HEALTH 2014. [DOI: 10.1089/jomh.2014.0001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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17
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Komatsu T, Lee MCI. Oxidative Stress and Periodontal Disease in Down Syndrome. STUDIES ON PERIODONTAL DISEASE 2014. [DOI: 10.1007/978-1-4614-9557-4_15] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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18
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Komatsu T, Duckyoung Y, Ito A, Kurosawa K, Maehata Y, Kubodera T, Ikeda M, Lee MCI. Increased oxidative stress biomarkers in the saliva of Down syndrome patients. Arch Oral Biol 2013; 58:1246-50. [DOI: 10.1016/j.archoralbio.2013.03.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Revised: 12/21/2012] [Accepted: 03/29/2013] [Indexed: 10/26/2022]
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19
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Horie S. [Diabetes mellitus related common medical disorders: recent progress in diagnosis and treatment topics: I. Pathophysiology, diagnosis and treatment; 13. Late onset hypogonadism syndrome]. NIHON NAIKA GAKKAI ZASSHI. THE JOURNAL OF THE JAPANESE SOCIETY OF INTERNAL MEDICINE 2013; 102:914-921. [PMID: 23772507 DOI: 10.2169/naika.102.914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Affiliation(s)
- Shigeo Horie
- Department of Urology, Juntendo University, Japan
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20
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Kimura M, Rabbani ZN, Zodda AR, Yan H, Jackson IL, Polascik TJ, Donatucci CF, Moul JW, Vujaskovic Z, Koontz BF. Role of oxidative stress in a rat model of radiation-induced erectile dysfunction. J Sex Med 2012; 9:1535-49. [PMID: 22489731 DOI: 10.1111/j.1743-6109.2012.02716.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Chronic oxidative stress is one of the major factors playing an important role in radiation-induced normal tissue injury. However, the role of oxidative stress in radiation-induced erectile dysfunction (ED) has not been fully investigated. Aims. To investigate role of oxidative stress after prostate-confined irradiation in a rat model of radiation-induced ED. METHODS Fifty-four young adult male rats (10-12 weeks of age) were divided into age-matched sham radiotherapy (RT) and RT groups. Irradiated animals received prostate-confined radiation in a single 20 Gy fraction. MAIN OUTCOME MEASURES Intracavernous pressure (ICP) measurements with cavernous nerve electrical stimulation were conducted at 2, 4, and 9 weeks following RT. The protein expression of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase subunits (Nox4 and gp91(phox)), markers of oxidative DNA damage (8-hydroxy-2'-deoxyguanosine [8-OHdG]), lipid peroxidation (4-hydroxynonenal [4HNE]), and inflammatory response including inducible nitric oxide synthase, macrophage activation (ED-1), and nitrotyrosine, and endogenous antioxidant defense by nuclear factor erythroid 2-related factor (Nrf2) were evaluated in irradiated prostate tissue and corpora cavernosa (CC). In addition, we investigated the relationships between results of ICP/mean arterial pressure (MAP) ratios and expression level of oxidative stress markers. RESULTS In the RT group, hemodynamic functional studies demonstrated a significant time-dependent decrease in ICP. Increased expression of Nox4, gp91(phox), 8-OHdG, and 4HNE were observed in the prostate and CC after RT. Similarly, expressions of inflammatory markers were significantly increased. There was a trend for increased Nrf2 after 4 weeks. ICP/MAP ratio negatively correlated with higher expression level of oxidative markers. CONCLUSION NADPH oxidase activation and chronic oxidative stress were observed in irradiated prostate tissue and CC, which correlated with lower ICP/MAP ratio. Persistent inflammatory responses were also found in both tissues after RT. These findings suggest that oxidative stress plays a crucial role in the development of radiation-induced ED.
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Affiliation(s)
- Masaki Kimura
- Division of Urologic Surgery, Department of Surgery and Duke Prostate Center, Duke University Medical Center, Durham, NC, USA.
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Lin WY, Chang PJ, Lin YP, Wu SB, Chen CS, Levin RM, Wei YH. Increased penile expression of transforming growth factor and elevated systemic oxidative stress in rabbits with chronic partial bladder outlet obstruction. ACTA ACUST UNITED AC 2011; 35:79-85. [DOI: 10.1111/j.1365-2605.2011.01189.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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22
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Aoki H, Nagao J, Ueda T, Strong JM, Schonlau F, Yu-Jing S, Lu Y, Horie S. Clinical assessment of a supplement of Pycnogenol® and L-arginine in Japanese patients with mild to moderate erectile dysfunction. Phytother Res 2011; 26:204-7. [PMID: 21618639 DOI: 10.1002/ptr.3462] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Revised: 02/08/2011] [Accepted: 02/08/2011] [Indexed: 11/10/2022]
Abstract
A double-blind parallel group comparison design clinical study was conducted in Japanese patients with mild to moderate erectile dysfunction to investigate the efficacy of a supplement containing Pycnogenol® and L-arginine. Subjects were instructed to take a supplement (Pycnogenol® 60 mg/day, L-arginine 690 mg/day and aspartic acid 552 mg/day) or an identical placebo for 8 weeks, and the results were assessed using the five-item erectile domain (IIEF-5) of the International Index of Erectile Function. Additionally, blood biochemistry, urinalysis and salivary testosterone were measured. Eight weeks of supplement intake improved the total score of the IIEF-5. In particular, a marked improvement was observed in 'hardness of erection' and 'satisfaction with sexual intercourse'. A decrease in blood pressure, aspartate transaminase and γ-glutamyl transpeptidase (γ-GTP), and a slight increase in salivary testosterone were observed in the supplement group. No adverse reactions were observed during the study period. In conclusion, Pycnogenol® in combination with L-arginine as a dietary supplement is effective and safe in Japanese patients with mild to moderate erectile dysfunction.
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Affiliation(s)
- Hiromitsu Aoki
- Central Laboratories, Kobayashi Pharmaceutical Co., Ltd., 4-4-10 Doshomachi, Chuo-ku, Osaka, Japan
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What can surrogate tissues tell us about the oxidative stress status of the prostate? A hypothesis-generating in-vivo study. PLoS One 2010; 5:e15880. [PMID: 21209941 PMCID: PMC3011012 DOI: 10.1371/journal.pone.0015880] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Accepted: 11/29/2010] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Prostatic oxidative stress (OS) is androgen-regulated and a key event in the development of prostate cancer (PC). Thus, reducing prostatic OS is an attractive target for PC prevention strategies. We sought to determine if the individual's prostatic OS status can be determined by examining the OS in surrogate androgen regulated tissues from the same host. METHODOLOGY/PRINCIPAL FINDINGS Adult male rats were divided equally into three groups: (A-) underwent bilateral orchiectomy, (A+) received continuous testosterone supplementation or (C) were eugonadal. Serum testosterone, 8-hydroxy-2-deoxyguanosine (8-OHdG) and anti-oxidative capacity (AOC) were determined after 72 hrs and the prostate, salivary glands and the hair follicles' Dermal Papillary Cells (DPC) from each animal were harvested, embedded into tissue microarray and examined for the expression of 8-OHdG by immuno-staining. Multi-variate regression was used to analyze inter-individual differences in OS staining within each androgen group and if there was a correlation between serum testosterone, 8-OHdG or AOC and Prostatic OS in tissues of same host. At the group level, 8-OHdG staining intensity directly correlated with serum testosterone levels in all three target tissues (p>0.01, Mann-Whitney Test). Although different levels of prostatic OS were noted between rats with similar serum testosterone levels and similar systemic OS measurements (p<0.01), there were no intra-individual differences between the OS status of the prostate and DPC (p<0.05). CONCLUSIONS/SIGNIFICANCE The level of prostatic OS is correlated with the OS of hair follicles and salivary glands, but not systemic OS. Moreover, systemic AOC negatively correlates with both prostatic and hair follicle OS. This suggests that hair follicle and salivary gland OS can serve as surrogate markers for the efficiency of OS reduction. This has tremendous potential for the rational evaluation of patient response to prevention strategies.
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Hu CW, Huang YJ, Li YJ, Chao MR. Correlation between concentrations of 8-oxo-7,8-dihydro-2′-deoxyguanosine in urine, plasma and saliva measured by on-line solid-phase extraction LC-MS/MS. Clin Chim Acta 2010; 411:1218-22. [DOI: 10.1016/j.cca.2010.04.029] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2010] [Revised: 04/22/2010] [Accepted: 04/22/2010] [Indexed: 11/28/2022]
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