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Olivier JDA, Janssen JA, Esquivel-Franco DC, de Prêtre S, Olivier B. A new approach to 'on-demand' treatment of lifelong premature ejaculation by treatment with a combination of a 5-HT 1A receptor antagonist and SSRI in rats. Front Neurosci 2023; 17:1224959. [PMID: 37781259 PMCID: PMC10534979 DOI: 10.3389/fnins.2023.1224959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 08/16/2023] [Indexed: 10/03/2023] Open
Abstract
Lifelong premature ejaculation (PE) in men lacks an adequate on-demand pharmacological treatment. Although selective serotonin reuptake inhibitors (SSRIs) are used for PE they only work after chronic treatment, or if used on-demand, less adequately than chronic SSRI treatment. It has been shown that the addition of a behaviorally silent 5-HT1A-receptor antagonist to an SSRI can generate acute inhibitory effects on male rat sexual behavior. Atlas987 is a selective 5-HT1A-receptor antagonist with equal potency to displace agonist and antagonist binding to pre- and post-synaptic 5-HT1A receptors in rat and human brain. To investigate whether Atlas987 together with the SSRI paroxetine, a combination called Enduro, induces acute inhibitory effects on male rat sexual behavior, we tested Enduro in Wistar rats in a dose-dependent manner. We first tested the 5-HT1A receptor antagonist Atlas987 in 8-OH-DPAT induced serotonergic behavior in rats. Second, we tested Enduro in a dose-dependent manner in male sexual behavior. Third, we tested the effective time window of Enduro's action, and lastly, we measured the plasma levels of Atlas987 and paroxetine over an 8-h period. Results showed that Enduro acutely and dose-dependently reduced the number of ejaculations and increased the ejaculation latencies. The behavioral pattern induced reflected a specific effect on sexual behavior excluding non-specific effects like sedation or sensoric-motoric disturbances. The time-window of activity of Enduro showed that this sexual inhibitory activity was at least found in a 1-4 h' time window after administration. Plasma levels showed that in this time frame both Atlas987 and paroxetine are present. In conclusion, in rats, Enduro is successful in acutely inhibiting sexual behavior. These results may be therapeutically attractive as "on demand" treatment for life-long premature ejaculation in men.
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Affiliation(s)
- Jocelien D. A. Olivier
- Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands
| | - Josien A. Janssen
- Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands
| | - Diana C. Esquivel-Franco
- Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands
| | | | - Berend Olivier
- Atlas Pharmaceuticals BV, Bruges, Belgium
- Psychopharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, United States
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Olivier B, Boulle N, Jacobs J, Obiora OL, MacMillan C, Liebenberg J, McErlain-Naylor S. Kinematic differences between left- and right-handed cricket fast bowlers during the bowling action. S Afr J Sports Med 2023; 35:v35i1a15144. [PMID: 38249757 PMCID: PMC10798611 DOI: 10.17159/2078-516x/2023/v35i1a15144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024] Open
Abstract
Background Despite differences between left- and right-handed athletes in other sports, minimal evidence exists regarding biomechanical similarities and differences between left- and right-handed cricket fast bowlers performing an equivalent task. Objectives This study aimed to compare the kinematics between left and right-handed fast bowlers performing an equivalent task (i.e. bowling 'over the wicket' to a batter of the same handedness as the bowler). Methods Full body, three-dimensional kinematic data for six left-handed and 20 right-handed adolescent, male, fast bowlers were collected using the Xsens inertial measurement system. Time-normalised joint and segment angle time histories from back foot contact to follow-through ground contacts were compared between groups via statistical parametric mapping. Whole movement and subphase durations were also compared. Results Left-handed players displayed significantly more trunk flexion from 49%-56% of the total movement (ball release occurred at 54%; p = 0.037) and had shorter back foot contact durations on average (0.153 vs 0.177 s; p = 0.036) compared to right-handed players. Conclusion Left- and right-handed bowlers displayed similar sagittal plane kinematics but appeared to use non-sagittal plane movements differently around the time of ball release. The kinematic differences identified in this study can inform future research investigating the effect of hand dominance on bowling performance and injury risk.
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Affiliation(s)
- B Olivier
- Wits Cricket Research Hub for Science, Medicine and Rehabilitation, Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg,
South Africa
| | - N Boulle
- Wits Cricket Research Hub for Science, Medicine and Rehabilitation, Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg,
South Africa
| | - J Jacobs
- Wits Cricket Research Hub for Science, Medicine and Rehabilitation, Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg,
South Africa
| | - OL Obiora
- Wits Cricket Research Hub for Science, Medicine and Rehabilitation, Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg,
South Africa
| | - C MacMillan
- Sport Exercise Medicine and Lifestyle Institute (SEMLI), Faculty of Health Sciences, University of Pretoria, Pretoria,
South Africa
| | - J Liebenberg
- Wits Cricket Research Hub for Science, Medicine and Rehabilitation, Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg,
South Africa
| | - S McErlain-Naylor
- School of Sport, Exercise and Health Sciences, Loughborough University,
United Kingdom
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Olivier FM, Olivier B, Mnguni N. The core of performance in adolescent cricket pace bowlers: Trunk muscle stability, maybe, but not strength-endurance and thickness. S Afr J Sports Med 2023; 34:v34i1a12521. [PMID: 36815924 PMCID: PMC9924598 DOI: 10.17159/2078-516x/2022/v34i1a12521] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background The trunk connects the upper and lower limbs and transfers energy during movement. Exploring the role of the trunk muscles in bowling performance affords us the opportunity to uncover potential mechanisms to improve bowling performance. Objectives To investigate the association between bowling performance and trunk muscle stability, strength-endurance and thickness in adolescent pace bowlers. Methods Adolescent pace bowlers participated in this cross-sectional study. Trunk muscle stability was measured using Sahrmann's Stability Scale, strength-endurance using the Bourbon Trunk Muscle Strength Test and thickness of the abdominal wall and lumbar multifidus muscles using ultrasound imaging. Results Forty-six pace bowlers with a mean age of 15.9 ±1.2 years participated. The average ball release speed was 109.2±11.8 km.h-1. This measurement was higher in level four of stability than in level two (mean difference 22.2 ± SD 6.8 km.h-1; p= .018). No link between ball release speed and strength-endurance could be found. Multiple correlations of moderate strength (r > 0.4) exist between ball release speed and absolute trunk muscle thickness with height and weight as confounding factors. The relationship between accuracy and the trunk muscle variables investigated in this study is weak. Conclusion Bowlers with better trunk muscle stability bowled faster than those with a lower level of trunk stability, irrespective of their age, height and weight. Trunk muscle thickness correlated with ball release speed; however, confounding factors such as height and weight play a role and therefore, findings need to be interpreted with caution.
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Affiliation(s)
- FM Olivier
- Wits Cricket Research Hub for Science, Medicine and Rehabilitation, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand,Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand
| | - B Olivier
- Wits Cricket Research Hub for Science, Medicine and Rehabilitation, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand,Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand
| | - N Mnguni
- Wits Cricket Research Hub for Science, Medicine and Rehabilitation, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand
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Peyper KR, Olivier B, Green A. The cycle ergometer test is not a reliable alternative to the countermovement jump in the assessment of power output. S Afr J Sports Med 2023; 34:v34i1a12869. [PMID: 36815915 PMCID: PMC9927866 DOI: 10.17159/2078-516x/2022/v34i1a12869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background Rugby union is a physically demanding collision sport that requires optimal neuromuscular function for maximal power output, with mechanical power an integral component of performance. Peak power (Pp) and relative Pp are parameters of neuromuscular function commonly assessed through the countermovement jump (CMJ) as a measure of fatigue. The Wattbike cycle ergometer test (CET) is a non-load bearing method of evaluating lower limb power. The cost-effective CET could therefore offer a viable alternative to the CMJ. Objectives This study aimed to determine the concurrent validity of the CMJ and CET. Methods Thirty-eight professional rugby union players performed twelve CMJs on a force platform with four loads (bodyweight: BW-CMJ; 20kg: 20-CMJ; 40kg: 40-CMJ and 60kg: 60-CMJ) and a six second peak power (6PPO) CET assessment on a Wattbike ergometer. Results CMJ power outputs were [BW-CMJ: Pp - 3101±648 W; 20-CMJ: Pp - 2724±513 W; 40-CMJ: Pp - 2490±496 W; 60-CMJ: Pp - 2238±366 W] and CET [Pp - 1310±161 W]. None of the CMJ-Pp values showed relationships with any CET power variables. Large (r = 0.51-0.63; p = 0.000 - 0.001) relationships were found to be between relative CMJ and relative CET power outputs. Bland-Altman plots, which were used to determine the level of agreement between the two assessments, showed the agreement between the tests was poor. Conclusion Though positive relationships existed between relative CMJ and relative CET power variables, analyses of the level of agreement in the Bland-Altman plots suggest that the two power assessment methods are not interchangeable measures of power.
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Affiliation(s)
- KR Peyper
- Department of Sport and Movement Studies, Faculty of Health Sciences, University of Johannesburg,
South Africa
| | - B Olivier
- Wits Cricket Research Hub for Science, Medicine and Rehabilitation, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg,
South Africa
| | - A Green
- Department of Sport and Movement Studies, Faculty of Health Sciences, University of Johannesburg,
South Africa
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Olivier B, Janssen J, de Pretre S, Olivier PJ. A new approach for on-demand premature ejaculation. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.08.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Koech RC, Olivier B, Tawa N. A prevalence of running-related injuries among professional endurance runners in the Rift Valley, Kenya. S Afr J Sports Med 2021; 33:v33i1a10690. [PMID: 36816903 PMCID: PMC9924508 DOI: 10.17159/2078-516x/2021/v33i1a10690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background Injuries related to endurance running have attracted attention as the sport has become more competitive, and as athletes seek to improve their performance. Consequently, endurance runners are increasingly becoming more susceptible to lower extremity running injuries. Objectives The aim of this study was to establish the prevalence of running-related injuries among professional endurance runners in the Rift Valley, Kenya. Methods We used a cross-sectional survey design targeting professional endurance runners who had participated in both local and international running competitions. The sample size consisted of 209 respondents selected through stratified and simple random sampling techniques, of which 167 participated in the study. A self-administered questionnaire was used to collect data on the prevalence of injuries among the endurance runners. The data were analysed using descriptive statistics. Results The prevalence of running injuries was 63% (n=106). The prevalence among males (n=64; 69%) was higher in comparison with that of females (n=42; 57%). The posterior thigh was the most common site for injuries among the athletes (n=87; 52%), followed by the lower back (n=78; 47%) and ankle (n=63; 38%). Conclusion The prevalence of running-related injuries was high among professional Kenyan endurance runners compared to other populations. These findings therefore form the basis of future research to explore the mechanisms behind the injuries and the feasibility of targeted injury prevention programmes.
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Affiliation(s)
- RC Koech
- Department of Physiotherapy, Jomo Kenyatta University of Agriculture and Technology, Kenya
| | - B Olivier
- Department of Physiotherapy, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - N Tawa
- Department of Physiotherapy, Jomo Kenyatta University of Agriculture and Technology, Kenya,Centre for Research in Spinal Health and Rehabilitation Medicine, Department of Physiotherapy, Jomo Kenyatta University of Agriculture and Technology, Kenya
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Garnett D, Bholah A, Olivier B, Patricios J, D’Hotman Y, Sunassee K, Cobbing S. The epidemiology of injury and illness amongst athletes at the Indian Ocean Island Games, Mauritius, 2019. S Afr J Sports Med 2021; 33:v33i1a11211. [PMID: 36816894 PMCID: PMC9924607 DOI: 10.17159/2078-516x/2021/v33i1a11211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background The Indian Ocean Island Games is a multi-sport event that occurs every four years and includes athletes from seven islands of the Indian Ocean, namely, Comoros, Reunion, Mayotte, Madagascar, Maldives, Seychelles, and Mauritius. Objectives This study aims to describe the injury and illness epidemiology of the athletes participating during the 2019 Indian Ocean Islands Games. Methods This prospective cohort study recorded injury and illness cases from athletes who competed in these Games. All medical physicians received detailed instructions and training on data collection using an injury report form. All athletes (minors and adults) who provided consent, or consent given from the minors' guardians, were included in this study. Athletes who did not provide consent for this study were excluded. Results Athletes (n = 1 521; 531 women and 990 men) reported 160 injuries (injury incidence rate of 11%) and 85 illnesses (illness incidence rate of 6%). The percentage of distribution of injuries were highest in football and basketball. Most injuries occurred during competition, compared with training, joint sprains were the most common type of injury (28%), followed by muscle strains (19%). Men suffered most of the injuries (79% vs. 21% for women). Similarly, men sustained more illnesses than women (57% vs. 43%). Most illnesses affected the respiratory system (67%), and infection was the most common cause of illness (84%) in participating athletes. Conclusion These findings are similar to previous events in other parts of the world. However, unique ailments, not previously reported on, were discovered. Epidemiological data from this study can be inferred to athletes who compete in similar multi-sport events in the Indian Ocean region.
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Bakare U, Olivier B, Brandt C, Godlwana L. Injury prevention knowledge, beliefs, and practices among women's football teams in South Africa. S Afr J Sports Med 2021; 33:v33i1a9505. [PMID: 36816897 PMCID: PMC9924592 DOI: 10.17159/2078-516x/2021/v33i1a9505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background Numerous factors account for injury prevention or lack thereof in any team setting. With the increasing burden of injuries in women's football, and limited human resources accessible in sub-Saharan Africa, it is important to investigate the ways in which standardised injury prevention practices can be achieved. Objectives The study aimed to evaluate injury prevention knowledge, beliefs, and practices in women's football teams in the University Sport South Africa (USSA) Football League in Gauteng Province, South Africa. Methods A cross-sectional self-administered survey was conducted among women's football teams registered to participate in the USSA Football League in South Africa's Gauteng Province. Results A total of 107 respondents participated in the study, which included both players (n=98; 92%) and their support staff (n=9; 9%). The median (interquartile range) age of the participants was 22 (20-25) years. In the population sampled, 36% of the participants perceived that they had adequate knowledge of injury prevention practices in football, while others felt they had limited knowledge of the basic injury prevention programmes (IPPs). The results also indicated that the injury prevention practices of coaches (93%) and their beliefs in this regard (70%) are sufficient for achieving the basic injury prevention goals. Most of the respondents (89%) indicated that a medical support system is important in attaining the goals of injury prevention. Conclusion Members of women's teams in the USSA Football League have recognised limited knowledge about the basic IPPs, while they do employ some of the basic injury prevention practices in football. These practices could be influenced by the beliefs of the coaches and the players, and most of them believe that IPPs are important. It is essential as key stakeholders that coaches' and players' education and knowledge of injury prevention strategies should be considered as an integral part of the process to succeed. It should be strongly highlighted and implemented, thus augmenting the credibility, trust and compliance for IPPs in the sport.
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Affiliation(s)
- U Bakare
- Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - B Olivier
- Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa,Wits Sport & Health (WiSH) Research Group, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - C Brandt
- Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa,Wits Sport & Health (WiSH) Research Group, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - L Godlwana
- Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Esquivel-Franco D, Wiegersma M, Janssen J, Colaprete C, Wesselink L, Olivier B, Olivier J. PS-3-9 Sexual Behavior in Male Serotonin Transporter Knockout Rats. J Sex Med 2020. [DOI: 10.1016/j.jsxm.2020.04.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Esquivel-Franco DC, de Boer SF, Waldinger M, Olivier B, Olivier JDA. Pharmacological Studies on the Role of 5-HT 1 A Receptors in Male Sexual Behavior of Wildtype and Serotonin Transporter Knockout Rats. Front Behav Neurosci 2020; 14:40. [PMID: 32296313 PMCID: PMC7136541 DOI: 10.3389/fnbeh.2020.00040] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 03/06/2020] [Indexed: 12/21/2022] Open
Abstract
Brain serotonin (5-HT) neurotransmission plays an important role in male sexual behavior and it is well established that activating 5-HT1 A receptors in rats facilitate ejaculatory behavior. However, the relative contribution of 5-HT1 A somatodendritic autoreceptors and heteroreceptors in this pro-sexual behavior is unclear. Moreover, it is unclear whether the contribution of somatodendritic 5-HT1 A autoreceptors and postsynaptic 5-HT1 A heteroreceptors alter when extracellular 5-HT levels are chronically increased. Serotonin transporter knockout (SERT-/-) rats exhibit enhanced extracellular 5-HT levels and desensitized 5-HT1 A receptors. These rats model neurochemical changes underlying chronic SSRI-induced sexual dysfunction. We want to determine the role of presynaptic versus postsynaptic 5-HT1 A receptors in the pro-sexual effects of 5-HT1 A receptor agonists in SERT+/+ and in SERT-/- rats. Therefore, acute effects of the biased 5-HT1 A receptor agonists F-13714, a preferential 5-HT1 A autoreceptor agonist, or F-15599, a preferential 5-HT1 A heteroreceptor agonist, and S15535 a mixed 5-HT1 A autoreceptor agonist/heteroreceptor antagonist, on male sexual behavior were assessed. A clear and stable genotype effect was found after training where SERT+/+ performed sexual behavior at a higher level than SERT-/- rats. Both F-15599 and F-13714 induced pro-sexual activity in SERT+/+ and SERT-/- animals. Compared to SERT+/+, the F13714-dose-response curve in SERT-/- rats was shifted to the right. SERT+/+ and SERT-/- rats responded similar to F15599. Within both SERT+/+ and SERT-/- rats the potency of F-13714 was much stronger compared to F-15599. S15535 had no effect on sexual behavior in either genotype. In SERT+/+ and SERT-/- rats that were selected on comparable low sexual activity (SERT+/+ 3 or less ejaculations and SERT-/- 5 or less ejaculations in 10 weeks) S15535 also did not influence sexual behavior. The two biased compounds with differential effects on 5-HT1 A auto- and hetero-receptors, exerted pro-sexual activity in both SERT+/+ and SERT-/- rats. Applying these specific pharmacological tools has not solved whether pre- or post-synaptic 5-HT1 A receptors are involved in pro-sexual activity. Moreover, the inactivity of S15535 in male sexual behavior in either genotype was unexpected. The question is whether the in vivo pharmacological profile of the different 5-HT1 A receptor ligands used, is sufficient to differentiate pre- and/or post-synaptic 5-HT1 A receptor contributions in male rat sexual behavior.
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Affiliation(s)
- Diana Carolina Esquivel-Franco
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands.,Programa de Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico.,Instituto de Investigaciones Biomédicas (IIB), Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Sietse F de Boer
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands
| | - Marcel Waldinger
- Department of Pharmacology & Physiology, College of Medicine, Drexel University, Philadelphia, PA, United States
| | - Berend Olivier
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands.,Department of Psychopharmacology, Utrecht Institute for Pharmaceutical Sciences, Science Faculty, Utrecht University, Utrecht, Netherlands.,Department of Psychiatry, School of Medicine, Yale University, New Haven, CT, United States
| | - Jocelien D A Olivier
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands
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Tuiten A, Michiels F, Böcker KB, Höhle D, van Honk J, de Lange RP, van Rooij K, Kessels R, Bloemers J, Gerritsen J, Janssen P, de Leede L, Meyer JJ, Everaerd W, Frijlink HW, Koppeschaar HP, Olivier B, Pfaus JG. Genotype scores predict drug efficacy in subtypes of female sexual interest/arousal disorder: A double-blind, randomized, placebo-controlled cross-over trial. ACTA ACUST UNITED AC 2018; 14:1745506518788970. [PMID: 30016917 PMCID: PMC6052493 DOI: 10.1177/1745506518788970] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Attempts to develop a drug treatment for female sexual interest/arousal disorder
have so far been guided by the principle of ‘one size fits all’, and have failed
to acknowledge the complexity of female sexuality. Guided by personalized
medicine, we designed two on-demand drugs targeting two distinct hypothesized
causal mechanisms for this sexual disorder. The objective of this study was to
design and test a novel procedure, based on genotyping, that predicts which of
the two on-demand drugs will yield a positive treatment response. In a
double-blind, randomized, placebo-controlled cross-over experiment, 139 women
with female sexual interest/arousal disorder received three different on-demand
drug-combination treatments during three 2-week periods: testosterone
0.5 mg + sildenafil 50 mg, testosterone 0.5 mg + buspirone 10 mg, and matching
placebo. The primary endpoint was change in satisfactory sexual events.
Subjects’ genetic profile was assessed using a microarray chip that measures
300,000 single-nucleotide polymorphisms. A preselection of single-nucleotide
polymorphisms associated with genes that are shown to be involved in sexual
behaviour were combined into a Phenotype Prediction Score. The Phenotype
Prediction Score demarcation formula was developed and subsequently validated on
separate data sets. Prediction of drug-responders with the Phenotype Prediction
Score demarcation formula gave large effect sizes (d = 0.66 through 1.06) in the
true drug-responders, and medium effect sizes (d = 0.51 and d = 0.47) in all
patients (including identified double, and non-responders). Accuracy,
sensitivity, specificity, positive predictive value, and negative predictive
value of the Phenotype Prediction Score demarcation formula were all between
0.78 and 0.79, and thus sufficient. The resulting Phenotype Prediction Score was
validated and shown to effectively and reliably predict which women would
benefit from which on-demand drug, and could therefore also be useful in
clinical practice, as a companion diagnostic establishing the way to a true
personalized medicine approach.
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Affiliation(s)
| | - Frits Michiels
- 2 Chemistry and Life Sciences, V.O. Patients & Trademarks, Amsterdam, The Netherlands
| | | | - Daniël Höhle
- 3 Alan Turing Institute Almere, Almere, The Netherlands
| | - Jack van Honk
- 4 Department of Experimental Psychology, Utrecht University, Utrecht, The Netherlands.,5 Institute of Infectious Disease and Molecular Medicine (IDM), University of Cape Town, Cape Town, South Africa.,6 Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
| | | | - Kim van Rooij
- 1 Emotional Brain BV, Almere, The Netherlands.,7 Utrecht Institute for Pharmaceutical Sciences and Rudolf Magnus Institute of Neuroscience, Utrecht University, Utrecht, The Netherlands
| | - Rob Kessels
- 1 Emotional Brain BV, Almere, The Netherlands
| | - Jos Bloemers
- 1 Emotional Brain BV, Almere, The Netherlands.,7 Utrecht Institute for Pharmaceutical Sciences and Rudolf Magnus Institute of Neuroscience, Utrecht University, Utrecht, The Netherlands
| | - Jeroen Gerritsen
- 1 Emotional Brain BV, Almere, The Netherlands.,7 Utrecht Institute for Pharmaceutical Sciences and Rudolf Magnus Institute of Neuroscience, Utrecht University, Utrecht, The Netherlands
| | - Paddy Janssen
- 8 Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands.,9 Department of Central Hospital Pharmacy, Viecuri Hospital, Venlo, The Netherlands
| | - Leo de Leede
- 10 Exelion Bio-Pharmaceutical Consultancy B.V., Waddinxveen, The Netherlands
| | - John-Jules Meyer
- 3 Alan Turing Institute Almere, Almere, The Netherlands.,11 Department of Information and Computing Sciences, Utrecht University, Utrecht, The Netherlands
| | - Walter Everaerd
- 12 Department of Psychology, University of Amsterdam, Amsterdam, The Netherlands
| | - Henderik W Frijlink
- 13 Research Group of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherland
| | | | - Berend Olivier
- 7 Utrecht Institute for Pharmaceutical Sciences and Rudolf Magnus Institute of Neuroscience, Utrecht University, Utrecht, The Netherlands.,14 Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA.,15 Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
| | - James G Pfaus
- 16 Department of Psychology, Centre for Studies in Behavioral Neurobiology, Concordia University, Montreal, QC, Canada
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Tuiten A, van Rooij K, Bloemers J, Eisenegger C, van Honk J, Kessels R, Kingsberg S, Derogatis L, de Heede L, Gerritsen J, Koppeschaar H, Olivier B, Everaerd W, Frijlink H, Höhle D. 167 Efficacy and safety of on-demand use of 2 treatments designed for different etiologies of female sexual interest/arousal disorder: 3 randomized clinical trials. J Sex Med 2018. [DOI: 10.1016/j.jsxm.2018.04.166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Esquivel-Franco DC, Olivier B, Waldinger MD, Gutiérrez-Ospina G, Olivier JDA. Tramadol's Inhibitory Effects on Sexual Behavior: Pharmacological Studies in Serotonin Transporter Knockout Rats. Front Pharmacol 2018; 9:676. [PMID: 29997507 PMCID: PMC6030355 DOI: 10.3389/fphar.2018.00676] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 06/05/2018] [Indexed: 12/27/2022] Open
Abstract
Tramadol is an effective pharmacological intervention in human premature ejaculation (PE). To investigate whether the inhibitory action of tramadol is primarily caused by its selective serotonin reuptake inhibitory (SSRI) effects we tested the dose–response effects of tramadol on sexual behavior in serotonin transporter wild type (SERT+/+), heterozygous (SERT+/-), and knockout (SERT-/-) rats. To investigate whether other mechanisms contribute to the inhibitory effects, WAY100,635, a 5-HT1A receptor antagonist and naloxone, a μ-opioid receptor antagonist, were tested on sexual behavior together with tramadol. Tramadol dose-dependently decreases sexual activity in all genotypes. In all studies, SERT+/- rats did not respond differently from SERT+/+ rats. WAY100,635 did not affect sexual activity in SERT+/+, but dose-dependently reduced sexual activity in SERT-/- rats. WAY100,635 (0.3 mg/kg) combined with tramadol (20 mg/kg) significantly reduced sexual activity in SERT+/+ and even stronger in SERT-/- rats. Naloxone did not affect sexual behavior consistently in SERT+/+ rats, while in SERT-/- rats all doses reduced ejaculation frequency mildly. Combining naloxone (20 mg/kg) and tramadol (20 mg/kg) decreased ejaculation frequencies in both genotypes. Interestingly, combining tramadol (20 mg/kg), WAY100,635 (0.3 mg/kg) and naloxone (20 mg/kg) led to complete elimination of all sexual activity in both SERT+/+ and SERT-/- rats. These findings suggest that the inhibitory effects of tramadol on male sexual behavior in SERT+/+ rats is mainly, if not exclusively, due to SERT inhibition, with an important role for 5-HT1A receptors, although influence of other systems (e.g., noradrenergic) cannot be excluded. As SSRIs exert their sexual inhibition after chronic administration, tramadol may be therapeutically attractive as “on demand” therapy for PE.
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Affiliation(s)
- Diana C Esquivel-Franco
- Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands.,Programa de Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico.,Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Berend Olivier
- Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands.,Department of Psychopharmacology, Utrecht Institute for Pharmaceutical Sciences, Science Faculty, Utrecht University, Utrecht, Netherlands.,Department of Psychiatry, Yale University School of Medicine, New Haven, CT, United States
| | - Marcel D Waldinger
- Department of Pharmacology & Physiology, College of Medicine, Drexel University, Philadelphia, PA, United States
| | - Gabriel Gutiérrez-Ospina
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico.,Coordinación de Psicobiología y Neurociencias, Facultad de Psicología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Jocelien D A Olivier
- Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands
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Tuiten A, van Rooij K, Bloemers J, Eisenegger C, van Honk J, Kessels R, Kingsberg S, Derogatis LR, de Leede L, Gerritsen J, Koppeschaar HP, Olivier B, Everaerd W, Frijlink HW, Höhle D, de Lange RP, Böcker KB, Pfaus JG. Efficacy and Safety of On-Demand Use of 2 Treatments Designed for Different Etiologies of Female Sexual Interest/Arousal Disorder: 3 Randomized Clinical Trials. J Sex Med 2018; 15:201-216. [DOI: 10.1016/j.jsxm.2017.11.226] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 11/29/2017] [Accepted: 11/30/2017] [Indexed: 01/03/2023]
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16
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Dafkin C, Green A, Olivier B, McKinon W, Kerr S. Circadian variation of flexor withdrawal and crossed extensor reflexes in restless legs syndrome. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dafkin C, McKinon W, Green A, Olivier B, Kerr S. Plantar reflex excitability fluctuations in restless legs syndrome patients. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Green A, Kerr S, Olivier B, Meiring R, Dafkin C, McKinon W. A simulated rugby match protocol induces physiological fatigue without decreased individual scrummaging performance. S Afr j sports med 2017. [DOI: 10.17159/2078-516x/2017/v29i1a3084] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background: A rugby union game consists of 80 minutes of strenuous exertion. Forwards are required to participate in the arduous activity of scrummaging throughout a game.Objectives: The purpose of this study was to identify whether rugby-match simulated fatigue modified individual scrummaging technique and reduced performance.Methods: Twelve forwards (body mass 106.2±13.3 kg; stature 179.5±8.4 cm) had individual scrum kinetics and kinematics assessed prior to and following a protocol that simulated a rugby match. The simulated rugby match protocol required participants to run at various velocities and perform rugby specific tasks. Rating of Perceived Exertion (RPE) was assessed using a 6-20 Borg scale and Visual Analogue Scale (VAS). Blood lactate, heart rate and RPE were measured prior to, at mid-point and after the simulated game, while markers of muscle damage (blood creatine kinase activity (CK) and urea) were measured prior to and following the protocol.Results: RPE (p<0.0001) and VAS (p<0.0001) showed significant increases between the pre- and post-simulation values. Of the physiological markers, heart rate (p<0.0001) and blood urea concentration (p=0.004) increased following the match simulation. No significant differences were observed for blood CK (p=0.281), individual scrummaging forces (p=0.433) or in the kinematic variables following the protocol. While physiological fatigue and subjective ratings of physiological fatigue may develop during a rugby simulation, no differences were observed in peak forces or in body kinematics at peak force.Conclusion: Physiological fatigue does not influence individual scrummaging performance and technique.
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Ruzsa Z, Nemes B, Ungi I, Toth J, Katona A, Huttl A, Olivier B, Merkely B. P5213Invasive treatment of the critical hand ischaemia: long term results. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Janse van Rensburg L, Dare M, Louw Q, Crous L, Cockroft J, Williams L, Olivier B. Pelvic and hip kinematics during single-leg drop-landing are altered in sports participants with long-standing groin pain: A cross-sectional study. Phys Ther Sport 2017. [DOI: 10.1016/j.ptsp.2017.05.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Nieuwoudt MJ, Kreft E, Olivier B, Malfeld S, Vosloo J, Stegman F, Kunneke R, Van Wyk AJ, Van der Merwe SW. A Large-Scale Automated Method for Hepatocyte Isolation: Effects on Proliferation in Culture. Cell Transplant 2017; 14:291-9. [PMID: 16052910 DOI: 10.3727/000000005783983007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Large-scale sterile methods for isolating hepatocytes are desirable for the development of bioartificial liver support systems. In this study the traditional centrifuge method was compared with the use of a Baylor Rapid Autologous Transfusion (BRAT) machine for isolating large quantities of porcine hepatocytes. After isolating hepatocytes, the methods were evaluated in terms of cell viability and yield per liver, proliferation over 7 days, and the effects on the cell cycle using the trypan blue exclusion test, conventional phase-contrast light microscopy, the lactate to pyruvate ratio, the leakage of lactate dehydrogenase (LD) and aspartate aminotransferase (AST), lidocaine clearance, albumin production, and flow cytometry. With the centrifuge method the mean cell viability was 92.5%, while with the BRAT method the viability was 95.9%. The minimal cell yields with the BRAT procedure were 7.3 × 109 for 250-ml centrifuge bowls and 2.8 × 109 for 165-ml bowls, which compares well with that found by other authors. Because the same initial procedures were employed in both methods the total hepatocyte yield per liver was comparable. Flow cytometry confirmed that the proliferation of hepatocytes was facilitated by oxygenation during the isolation procedure. The recovery of hepatocytes in culture following isolation was similar after either method. Daily microscopic investigation indicated that cytoplasmic vacuolization and granularities were present after either procedure and these disappeared following 3–4 days of culturing. Flow cytometry indicated that the hepatocyte cell cycle was similar after either method; at 7 days the profile indicated that the cells were still proliferating. Trends in the lactate to pyruvate ratio and the leakage of LD and AST indicated that the functional polarity of hepatocytes was regained after approximately 3 days. Lidocaine clearance at 4 days indicated that the cytochrome P450 system was active, while significant albumin production was apparent at day 5. The benefit of using BRAT technology in hepatocyte isolation lies in guaranteed sterility, convenience, speed, and the ability to oxygenate media and cell suspensions during the procedure.
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Affiliation(s)
- M J Nieuwoudt
- Department of Internal Medicine, University of Pretoria, Pretoria, South Africa.
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22
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Kops M, Kjaer J, Güntürkün O, Westphal K, Korte-Bouws G, Olivier B, Korte S, Bolhuis J. Brain monoamine levels and behaviour of young and adult chickens genetically selected on feather pecking. Behav Brain Res 2017; 327:11-20. [DOI: 10.1016/j.bbr.2017.03.024] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 03/07/2017] [Accepted: 03/08/2017] [Indexed: 02/06/2023]
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Olivier JD, Esquivel Franco DC, Oosting R, Waldinger M, Sarnyai Z, Olivier B. Tramadol: Effects on sexual behavior in male rats are mainly caused by its 5-HT reuptake blocking effects. Neuropharmacology 2017; 116:50-58. [DOI: 10.1016/j.neuropharm.2016.11.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 11/18/2016] [Accepted: 11/22/2016] [Indexed: 10/20/2022]
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Korte SM, Prins J, Van den Bergh FS, Oosting RS, Dupree R, Korte-Bouws GA, Westphal KG, Olivier B, Denys DA, Garland A, Güntürkün O. The 5-HT1A/1B-receptor agonist eltoprazine increases both catecholamine release in the prefrontal cortex and dopamine release in the nucleus accumbens and decreases motivation for reward and “waiting” impulsivity, but increases “stopping” impulsivity. Eur J Pharmacol 2017; 794:257-269. [DOI: 10.1016/j.ejphar.2016.11.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/03/2016] [Accepted: 11/16/2016] [Indexed: 10/20/2022]
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Olivier B, Gillion N, Stewart AV, McKinon W. Reduced nondominant lumbar multifidi cross-sectional area is a precursor of low back injury in cricket fast bowlers. Scand J Med Sci Sports 2016; 27:1927-1933. [DOI: 10.1111/sms.12814] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/04/2016] [Indexed: 01/10/2023]
Affiliation(s)
- B. Olivier
- Department of Physiotherapy; School of Therapeutic Sciences; Faculty of Health Sciences; University of the Witwatersrand; Johannesburg Gauteng South Africa
| | - N. Gillion
- Department of Physiotherapy; School of Therapeutic Sciences; Faculty of Health Sciences; University of the Witwatersrand; Johannesburg Gauteng South Africa
| | - A. V. Stewart
- Department of Physiotherapy; School of Therapeutic Sciences; Faculty of Health Sciences; University of the Witwatersrand; Johannesburg Gauteng South Africa
| | - W. McKinon
- School of Physiology; Faculty of Health Sciences; University of the Witwatersrand; Johannesburg Gauteng South Africa
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Olivier B, Zalka L, Olry J, Jondreville C, Bouillaud-Kremarik P, Schroeder H. Perinatal exposure of rat pups to the HexaBromoCycloDoDecane (HBCDD) α-isomer affects sexual maturation and copulatory behavior at the adult stage. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.07.283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bardiaux L, Vauzou S, Olivier B, Mathieu-Daude D, Durand E, Dite C, Roubinet F. [Feasibility study for Intercept platelets]. Transfus Clin Biol 2016; 23:212-216. [PMID: 27644172 DOI: 10.1016/j.tracli.2016.08.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 08/22/2016] [Indexed: 11/19/2022]
Abstract
During 3 months, platelet concentrates prepared by "Établissement français du sang Pyrénées-Méditerranée" (Blood bank) were treated with the Intercept process (CERUS©). This study primarily aimed to measure the organizational impact of this technology on transfusion chain. The introduction of Intercept did not raise any major difficulties, but required some adaptations upstream from the deployment. Prior information of health care institutions and physician was essential to anticipate the practical changes, including the prescription of platelet concentrates (CMV negative, irradiation). This study allowed to analyze also the transfusion consequences for patients, in the form of observational studies. The patients transfused with platelet concentrates treated with Intercept received more platelet concentrates (+12.9%), less rich in platelets (-12.8%), the cumulated quantity of platelet being stable.
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Affiliation(s)
- L Bardiaux
- Établissement français du sang Pyrénées-Méditerranée, avenue de Grande-Bretagne, BP3210, 31027 Toulouse cedex 3, France.
| | - S Vauzou
- Établissement français du sang Pyrénées-Méditerranée, avenue de Grande-Bretagne, BP3210, 31027 Toulouse cedex 3, France
| | - B Olivier
- Établissement français du sang Pyrénées-Méditerranée, avenue de Grande-Bretagne, BP3210, 31027 Toulouse cedex 3, France
| | - D Mathieu-Daude
- Établissement français du sang Pyrénées-Méditerranée, avenue de Grande-Bretagne, BP3210, 31027 Toulouse cedex 3, France
| | - E Durand
- Établissement français du sang Pyrénées-Méditerranée, avenue de Grande-Bretagne, BP3210, 31027 Toulouse cedex 3, France
| | - C Dite
- Établissement français du sang Pyrénées-Méditerranée, avenue de Grande-Bretagne, BP3210, 31027 Toulouse cedex 3, France
| | - F Roubinet
- Établissement français du sang Pyrénées-Méditerranée, avenue de Grande-Bretagne, BP3210, 31027 Toulouse cedex 3, France
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Bloemers J, van Rooij K, de Leede L, Frijlink HW, Koppeschaar HPF, Olivier B, Tuiten A. Single dose sublingual testosterone and oral sildenafil vs. a dual route/dual release fixed dose combination tablet: a pharmacokinetic comparison. Br J Clin Pharmacol 2016; 81:1091-102. [PMID: 26804967 DOI: 10.1111/bcp.12887] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 01/14/2016] [Accepted: 01/21/2016] [Indexed: 01/04/2023] Open
Abstract
AIM The aim was to compare the pharmacokinetic profiles of two formulations of a combination drug product containing 0.5 mg testosterone and 50 mg sildenafil for female sexual interest/arousal disorder. The prototype (formulation 1) consists of a testosterone solution for sublingual administration and a sildenafil tablet that is administered 2.5 h later. The dual route/dual release fixed dose combination tablet (formulation 2) employs a sublingual and an oral route for systemic uptake. This tablet has an inner core of sildenafil with a polymeric time delay coating and an outer polymeric coating containing testosterone. It was designed to increase dosing practicality and decrease potential temporal non-adherence through circumventing the relatively complex temporal dosing scheme. METHODS Twelve healthy premenopausal subjects received both formulations randomly on separate days. Blood was sampled frequently to determine the pharmacokinetics of free testosterone, total testosterone, dihydrotestosterone, sildenafil and N-desmethyl-sildenafil. RESULTS Formulation 2 had a higher maximum concentration (Cmax ) for testosterone, 8.06 ng ml(-1) (95% confidence interval [CI] 6.84, 9.28) and higher area under the plasma concentration-time curve (AUC), 7.69 ng ml(-1) h (95% CI 6.22, 9.16) than formulation 1, 5.66 ng ml(-1) (95% CI 4.63, 6.69) and 5.12 ng ml(-1) h (95% CI 4.51, 5.73), respectively. Formulation 2 had a lower Cmax for sildenafil, 173 ng ml(-1) (95% CI 126, 220) and a lower AUC, 476 ng ml(-1) h (95% CI 401, 551) than formulation 1, 268 ng ml(-1) (95% CI 188, 348) and 577 ng ml(-1) h (95% CI 462, 692), respectively. Formulation 2 released sildenafil after 2.75 h (95% CI 2.40, 3.10). CONCLUSIONS The dual route/dual release fixed dose combination tablet fulfilled its design criteria and is considered suitable for further clinical testing. WHAT IS ALREADY KNOWN ABOUT THIS SUBJECT Female sexual interest/arousal disorder (FSIAD) is a significant problem impacting psychological well-being, but the pharmacotherapeutic options for this problem are lacking. The combined, on-demand, sublingual administration of low dose sublingual testosterone and oral administration of sildenafil is a novel pharmacotherapeutic option under development for FSIAD. In proof-of-concept trials, these compounds were successfully administered via different dosage forms (sublingual and oral) at different time points (separated by 2.5 h) because of their markedly different pharmacokinetic-pharmacodynamic profiles. For future larger scale studies and the clinical practice, this raises obvious adherence issues. WHAT THIS STUDY ADDS A newly developed dual route/dual release fixed dose combination tablet containing testosterone and sildenafil mimics the pharmacokinetic profile of these components when they are administered as different dosage forms, 2.5 h apart. This combination tablet is a suitable final pharmaceutical drug product that will be used in future studies.
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Affiliation(s)
- Jos Bloemers
- Emotional Brain B.V., Almere.,Utrecht Institute for Pharmaceutical Sciences and Rudolf Magnus Institute of Neuroscience, Utrecht University, Utrecht
| | - Kim van Rooij
- Emotional Brain B.V., Almere.,Utrecht Institute for Pharmaceutical Sciences and Rudolf Magnus Institute of Neuroscience, Utrecht University, Utrecht
| | - Leo de Leede
- Exelion Bio-Pharmaceutical Consultancy B.V., Waddinxveen
| | - Henderik W Frijlink
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands
| | | | - Berend Olivier
- Utrecht Institute for Pharmaceutical Sciences and Rudolf Magnus Institute of Neuroscience, Utrecht University, Utrecht.,Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Adriaan Tuiten
- Emotional Brain B.V., Almere.,Department of Psychopharmacology, Utrecht University, Utrecht, The Netherlands
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Oosting RS, Chan JS, Olivier B, Banerjee P, Choi YK, Tarazi F. Differential effects of vilazodone versus citalopram and paroxetine on sexual behaviors and serotonin transporter and receptors in male rats. Psychopharmacology (Berl) 2016; 233:1025-34. [PMID: 26758283 PMCID: PMC4759230 DOI: 10.1007/s00213-015-4198-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 12/04/2015] [Indexed: 12/23/2022]
Abstract
RATIONALE Sexual side effects are commonly associated with selective serotonin reuptake inhibitor (SSRI) treatment. Some evidence suggest that activation of 5-HT1A receptors attenuates SSRI-induced sexual dysfunction. OBJECTIVE This study in male rats compared the effects of vilazodone, an antidepressant with SSRI and 5-HT1A receptor partial agonist activity, with other prototypical SSRIs (citalopram and paroxetine) on sexual behaviors and 5-HT receptors (5-HT1A and 5-HT2A) and transporter (5-HTT) levels in select forebrain regions of the limbic system using quantitative autoradiography. METHODS Rats received vilazodone (1, 3, and 10 mg/kg), citalopram (10 and 30 mg/kg), or paroxetine (10 mg/kg) treatment for 14 days. Sexual behaviors (frequency and latency of mounts, intromissions, and ejaculations) were measured in the presence of an estrous female rat on days 1 (acute), 7 (subchronic), and 14 (chronic). RESULTS Vilazodone-treated rats exhibited no sexual dysfunction compared with controls; in contrast, the citalopram- and paroxetine-treated rats exhibited impaired copulatory and ejaculatory behaviors after subchronic and chronic treatments. Chronic vilazodone treatment markedly decreased 5-HT1A receptor levels in cortical and hippocampal regions, while the SSRIs increased levels of this receptor in similar regions. All chronic treatments reduced 5-HTT levels across the forebrain; however, the magnitude of the decrease was considerably smaller for vilazodone than for the SSRIs. CONCLUSIONS The current studies showed that chronic treatment with vilazodone, in contrast to citalopram and paroxetine, was not associated with diminished sexual behaviors in male rats, which may be related to the differential effects of vilazodone on 5-HT1A receptor and 5-HTT levels relative to conventional SSRIs.
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Affiliation(s)
- Ronald S Oosting
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands.
| | - Johnny S Chan
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Berend Olivier
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | | | - Yong Kee Choi
- Department of Psychiatry and Neuroscience Harvard Medical School and McLean Hospital, Belmont, MA, USA
| | - Frank Tarazi
- Department of Psychiatry and Neuroscience Harvard Medical School and McLean Hospital, Belmont, MA, USA
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Bell-Jenje T, Olivier B, Wood W, Rogers S, Green A, McKinon W. The association between loss of ankle dorsiflexion range of movement, and hip adduction and internal rotation during a step down test. ACTA ACUST UNITED AC 2015; 21:256-61. [PMID: 26432547 DOI: 10.1016/j.math.2015.09.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 09/09/2015] [Accepted: 09/10/2015] [Indexed: 10/23/2022]
Abstract
A pattern of excessive hip adduction and internal rotation with medial deviation of the knee has been associated with numerous musculo-skeletal dysfunctions. Research into the role that ankle dorsiflexion (DF) range of motion (ROM) play in lower limb kinematics is lacking. The objective of this cross-sectional, observational study was to investigate the relationship between ankle DF ROM, and hip adduction and hip internal rotation during a step-down test with and without heel elevation in a healthy female population. Hip and ankle ROM was measured kinematically using a ten-camera Optitrack motion analysis system. Thirty healthy female participants (mean age = 20.4 years; SD = 0.9 years) first performed a step-down test with the heel of the weight bearing foot flat on the step and then with the heel elevated on a platform. Ankle DF, hip adduction and hip internal rotation were measured kinematically for the supporting leg. Participants who had 17° or less of ankle DF ROM displayed significantly more hip adduction ROM (p = 0.001; Cohen's d effect size = 1.2) than the participants with more than 17° of DF during the step-down test. Participants with limited DF ROM showed a significant reduction in hip adduction ROM during the elevated-heel step-down test (p = 0.008). Hip internal rotation increased in both groups during the EHSD compared to the step-down test (p > 0.05) Reduced ankle DF ROM is associated with increased hip adduction utilised during the step-down test. Ankle DF should be taken into account when assessing patients with aberrant frontal plane lower limb alignment.
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Affiliation(s)
- T Bell-Jenje
- Physiotherapy Department, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, 2193, Johannesburg, Gauteng, South Africa
| | - B Olivier
- Physiotherapy Department, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, 2193, Johannesburg, Gauteng, South Africa.
| | - W Wood
- Physiotherapy Department, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, 2193, Johannesburg, Gauteng, South Africa
| | - S Rogers
- Physiotherapy Department, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, 2193, Johannesburg, Gauteng, South Africa
| | - A Green
- School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, 2193, Johannesburg, Gauteng, South Africa
| | - W McKinon
- School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, 2193, Johannesburg, Gauteng, South Africa
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Janssen PK, Schaik RV, Olivier B, Waldinger MD. The 5-HT2C receptor gene Cys23Ser polymorphism influences the intravaginal ejaculation latency time in Dutch Caucasian men with lifelong premature ejaculation. Asian J Androl 2015; 16:607-10. [PMID: 24799636 PMCID: PMC4104091 DOI: 10.4103/1008-682x.126371] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
It has been postulated that the persistent short intravaginal ejaculation latency time (IELT) of men with lifelong premature ejaculation (LPE) is related to 5-hydroxytryptamine (HT)2C receptor functioning. The aim of this study was to investigate the relationship of Cys23Ser 5-HT2C receptor gene polymorphism and the duration of IELT in men with LPE. Therefore, a prospective study was conducted in 64 Dutch Caucasian men with LPE. Baseline IELT during coitus was assessed by stopwatch over a 1-month period. All men were genotyped for Cys23Ser 5-HT2C receptor gene polymorphism. Allele frequencies and genotypes of Cys and Ser variants of 5-HT2C receptor gene polymorphism were determined. Association between Cys/Cys and Ser/Ser genotypes and the natural logarithm of the IELT in men with LPE were investigated. As a result, the geometric mean, median and natural mean IELT were 25.2, 27.0, 33.9 s, respectively. Of all men, 20.0%, 10.8%, 23.1% and 41.5% ejaculated within 10, 10–20, 20–30 and 30–60 s after vaginal penetration. Of the 64 men, the Cys/Cys and Ser/Ser genotype frequency for the Cys23Ser polymorphism of the 5-HT2C receptor gene was 81% and 19%, respectively. The geometric mean IELT of the wildtypes (Cys/Cys) is significantly lower (22.6 s; 95% CI 18.3–27.8 s) than in male homozygous mutants (Ser/Ser) (40.4 s; 95% CI 20.3–80.4 s) (P = 0.03). It is concluded that Cys23Ser 5-HT2C receptor gene polymorphism is associated with the IELT in men with LPE. Men with Cys/Cys genotype have shorter IELTs than men with Ser/Ser genotypes.
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Affiliation(s)
| | | | | | - Marcel D Waldinger
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht; Outpatient Department of Neurosexology, HagaZiekenhuis, The Hague, The Netherlands,
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Abstract
Psychogenic fever reflects a phenomenon where core body temperature is high (up to 41°C) or low-grade high (37–38°C) during either acute or chronic stress. Underlying mechanisms are distinct from infection-induced fever and involve the central and sympathetic nervous systems. Psychogenic fever appears a complex psychological, physiological and endocrinological phenomenon.
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Affiliation(s)
- Berend Olivier
- Neurobiology; GELIFES, Groningen University; Groningen, The Netherlands; Yale University School of Medicine; New Haven, CT USA; Science Faculty; Utrecht University; Utrecht, The Netherlands
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Basson C, Olivier B, Coppieters M, Ellis R, Stewart A, Mudzi W. The effectiveness of neural mobilisation in the treatment of neuro-musculoskeletal conditions: a systematic review and meta-analysis. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Korte SM, Prins J, Krajnc AM, Hendriksen H, Oosting RS, Westphal KG, Korte-Bouws GA, Olivier B. The many different faces of major depression: It is time for personalized medicine. Eur J Pharmacol 2015; 753:88-104. [DOI: 10.1016/j.ejphar.2014.11.045] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 10/16/2014] [Accepted: 11/26/2014] [Indexed: 01/11/2023]
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Pearce B, Olivier B, Mtshali S, Becker PJ. Gluteus medius kinesio-taping: The effect on torso-pelvic separation, ball flight distance and accuracy during the golf swing. S Afr j sports med 2015. [DOI: 10.17159/2078-516x/2015/v27i4a422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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van Rooij K, Poels S, Worst P, Bloemers J, Koppeschaar H, Goldstein A, Olivier B, Tuiten A. Efficacy of testosterone combined with a PDE5 inhibitor and testosterone combined with a serotonin (1A) receptor agonist in women with SSRI-induced sexual dysfunction. A preliminary study. Eur J Pharmacol 2014; 753:246-51. [PMID: 25460030 DOI: 10.1016/j.ejphar.2014.10.061] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 10/16/2014] [Indexed: 11/15/2022]
Abstract
Selective serotonin reuptake inhibitors (SSRIs) are known to cause sexual dysfunction, such as decreased sexual motivation, desire, arousal, and orgasm difficulties. These SSRI-induced sexual complaints have a high prevalence rate, while there is no approved pharmacological treatment for SSRI-induced sexual dysfunction. It is hypothesized that a polymorphisms in the androgen receptor gene, encoded by the nucleotides cysteine, adenine, and guanine (CAG), influence the effect of testosterone on sexual functioning. In an explorative, randomized, double-blind, placebo-controlled, crossover study we investigated the possible effects of sublingual testosterone combined with a serotonin (5-HT)1A receptor agonist, and of sublingual testosterone combined with a phosphodiesterase type 5 inhibitor (PDE5-i) on sexual functioning in women with SSRI-induced sexual dysfunction. Furthermore, we did an exploratory analysis to assess if the CAG polymorphism influences this effect. 21 pre- and postmenopausal women with SSRI-induced sexual dysfunction participated and underwent the following interventions: a combination of testosterone (0.5 mg) sublingually and the PDE5-i sildenafil (50 mg) and a combination of testosterone (0.5 mg) sublingually and the 5-HT1A receptor agonist buspirone (10 mg). The results show that women who use a low dose of SSRI and have relatively long CAG repeats report a marked improvement in sexual function in response to both treatments compared to placebo. This explorative study and preliminary results indicate that in women with SSRI-induced sexual dysfunction, a combination of testosterone sublingually and a PDE5-i or testosterone sublingually and a 5-HT1A receptor agonist might be promising treatments for certain subgroups of women with this condition.
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Affiliation(s)
- Kim van Rooij
- Emotional Brain B.V., Almere, The Netherlands; Utrecht Institute for Pharmaceutical Sciences and Rudlof Magnus Institute of Neuroscience, Utrecht University, Utrecht, The Netherlands.
| | - Saskia Poels
- Emotional Brain B.V., Almere, The Netherlands; Utrecht Institute for Pharmaceutical Sciences and Rudlof Magnus Institute of Neuroscience, Utrecht University, Utrecht, The Netherlands
| | - Petra Worst
- Emotional Brain B.V., Almere, The Netherlands
| | - Jos Bloemers
- Emotional Brain B.V., Almere, The Netherlands; Utrecht Institute for Pharmaceutical Sciences and Rudlof Magnus Institute of Neuroscience, Utrecht University, Utrecht, The Netherlands
| | | | | | - Berend Olivier
- Utrecht Institute for Pharmaceutical Sciences and Rudlof Magnus Institute of Neuroscience, Utrecht University, Utrecht, The Netherlands; Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Adriaan Tuiten
- Emotional Brain B.V., Almere, The Netherlands; Department of Psychopharmacology, Utrecht University, Utrecht, The Netherlands
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Hendriksen H, Bink DI, Vergoossen DLE, Suzet van Slobbe E, Olivier B, Oosting RS. Food restriction does not relieve PTSD-like anxiety. Eur J Pharmacol 2014; 753:177-82. [PMID: 25460029 DOI: 10.1016/j.ejphar.2014.10.060] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 09/05/2014] [Accepted: 10/09/2014] [Indexed: 10/24/2022]
Abstract
We used the inescapable foot shock paradigm (IFS) in rats as an animal model for post-traumatic stress disorder (PTSD). Previously we showed that exercise reversed the enhanced stress sensitivity induced by IFS. From literature it is known that food restriction has antidepressant and anxiolytic effects. Since both treatments influence energy expenditure, we questioned whether food restriction reduces anxiety in the IFS model via a comparable, NPY dependent mechanism as enrichment. Anxiety of IFS-exposed animals was measured as change in locomotion and freezing after sudden silence in an open field test, before and after two weeks of food restriction. In addition a forced swim test (FST) was performed. Next, using qPCR, the expression of neuropeptide Y (NPY) and the neuropeptide Y1 receptor (Y1 receptor) was measured in the amygdala. Food restriction increased locomotion and decreased freezing behavior both in control and IFS animals. These effects were small. IFS-induced anxiety was not abolished after two weeks of food restriction. IFS did not influence immobility or the duration of swimming in the FST of animals fed ad libitum. However, food restriction increased swimming and decreased the duration of immobility in IFS-exposed animals. Y1 receptor expression in the basolateral amygdala decreased after both IFS and food restriction. Although food restriction seems to induce a general anxiolytic effect, it does not operate via enhanced Y1 receptor expression and has no effect on the more pathogenic anxiety induced by IFS.
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Affiliation(s)
- Hendrikus Hendriksen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands.
| | - Diewertje I Bink
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Dana L E Vergoossen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - E Suzet van Slobbe
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Berend Olivier
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Ronald S Oosting
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
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de Theije CGM, van den Elsen LWJ, Willemsen LEM, Milosevic V, Korte-Bouws GAH, Lopes da Silva S, Broersen LM, Korte SM, Olivier B, Garssen J, Kraneveld AD. Dietary long chain n-3 polyunsaturated fatty acids prevent impaired social behaviour and normalize brain dopamine levels in food allergic mice. Neuropharmacology 2014; 90:15-22. [PMID: 25445491 DOI: 10.1016/j.neuropharm.2014.11.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 10/09/2014] [Accepted: 11/04/2014] [Indexed: 01/13/2023]
Abstract
Allergy is suggested to exacerbate impaired behaviour in children with neurodevelopmental disorders. We have previously shown that food allergy impaired social behaviour in mice. Dietary fatty acid composition may affect both the immune and nervous system. The aim of this study was to assess the effect of n-3 long chain polyunsaturated fatty acids (n-3 LCPUFA) on food allergy-induced impaired social behaviour and associated deficits in prefrontal dopamine (DA) in mice. Mice were fed either control or n-3 LCPUFA-enriched diet before and during sensitization with whey. Social behaviour, acute allergic skin response and serum immunoglobulins were assessed. Monoamine levels were measured in brain and intestine and fatty acid content in brain. N-3 LCPUFA prevented impaired social behaviour of allergic mice. Moreover, n-3 LCPUFA supplementation increased docosahexaenoic acid (DHA) incorporation into the brain and restored reduced levels of prefrontal DA and its metabolites 3,4-dihydroxyphenylacetic acid, 3-methoxytyramine and homovanillic acid in allergic mice. In addition to these brain effects, n-3 LCPUFA supplementation reduced the allergic skin response and restored decreased intestinal levels of serotonin metabolite 5-hydroxyindoleacetic acid in allergic mice. N-3 LCPUFA may have beneficial effects on food allergy-induced deficits in social behaviour, either indirectly by reducing the allergic response and restoring intestinal 5-HT signalling, or directly by DHA incorporation into neuronal membranes, affecting the DA system. Therefore, it is of interest to further investigate the relevance of food allergy-enhanced impairments in social behaviour in humans and the potential benefits of dietary n-3 LCPUFA supplementation.
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Affiliation(s)
- Caroline G M de Theije
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands.
| | - Lieke W J van den Elsen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Linette E M Willemsen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Vanja Milosevic
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Gerdien A H Korte-Bouws
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Sofia Lopes da Silva
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands; Nutricia Research, Uppsalalaan 12, 3584 CT, Utrecht, The Netherlands
| | - Laus M Broersen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands; Nutricia Research, Uppsalalaan 12, 3584 CT, Utrecht, The Netherlands
| | - S Mechiel Korte
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Berend Olivier
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Johan Garssen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands; Nutricia Research, Uppsalalaan 12, 3584 CT, Utrecht, The Netherlands
| | - Aletta D Kraneveld
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
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Abstract
The neurotransmitter serotonin is an evolutionary ancient molecule that has remarkable modulatory effects in almost all central nervous system integrative functions, such as mood, anxiety, stress, aggression, feeding, cognition and sexual behavior. After giving a short outline of the serotonergic system (anatomy, receptors, transporter) the author's contributions over the last 40 years in the role of serotonin in depression, aggression, anxiety, stress and sexual behavior is outlined. Each area delineates the work performed on animal model development, drug discovery and development. Most of the research work described has started from an industrial perspective, aimed at developing animals models for psychiatric diseases and leading to putative new innovative psychotropic drugs, like in the cases of the SSRI fluvoxamine, the serenic eltoprazine and the anxiolytic flesinoxan. Later this research work mainly focused on developing translational animal models for psychiatric diseases and implicating them in the search for mechanisms involved in normal and diseased brains and finding new concepts for appropriate drugs.
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Affiliation(s)
- Berend Olivier
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences & Brain Center Rudolf Magnus, Utrecht University, Universiteitsweg 99, 3584CG Utrecht, The Netherlands; Department of Psychiatry, Yale University School of Medicine, New Haven, USA
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40
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Dafkin C, Green A, Kerr S, Raymond A, Veliotes D, Elvin A, Olivier B, McKinon W. Kinematic and kinetic analysis of the inter- and intra-applicator assessment of the Babinski reflex. Neurophysiol Clin 2014; 44:471-7. [DOI: 10.1016/j.neucli.2014.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 07/29/2014] [Accepted: 07/31/2014] [Indexed: 10/24/2022] Open
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van Enkhuizen J, Janowsky DS, Olivier B, Minassian A, Perry W, Young JW, Geyer MA. The catecholaminergic-cholinergic balance hypothesis of bipolar disorder revisited. Eur J Pharmacol 2014; 753:114-26. [PMID: 25107282 DOI: 10.1016/j.ejphar.2014.05.063] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 05/25/2014] [Accepted: 05/27/2014] [Indexed: 02/06/2023]
Abstract
Bipolar disorder is a unique illness characterized by fluctuations between mood states of depression and mania. Originally, an adrenergic-cholinergic balance hypothesis was postulated to underlie these different affective states. In this review, we update this hypothesis with recent findings from human and animal studies, suggesting that a catecholaminergic-cholinergic hypothesis may be more relevant. Evidence from neuroimaging studies, neuropharmacological interventions, and genetic associations support the notion that increased cholinergic functioning underlies depression, whereas increased activations of the catecholamines (dopamine and norepinephrine) underlie mania. Elevated functional acetylcholine during depression may affect both muscarinic and nicotinic acetylcholine receptors in a compensatory fashion. Increased functional dopamine and norepinephrine during mania on the other hand may affect receptor expression and functioning of dopamine reuptake transporters. Despite increasing evidence supporting this hypothesis, a relationship between these two neurotransmitter systems that could explain cycling between states of depression and mania is missing. Future studies should focus on the influence of environmental stimuli and genetic susceptibilities that may affect the catecholaminergic-cholinergic balance underlying cycling between the affective states. Overall, observations from recent studies add important data to this revised balance theory of bipolar disorder, renewing interest in this field of research.
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Affiliation(s)
- Jordy van Enkhuizen
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive MC 0804, La Jolla, CA 92093-0804, USA; Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - David S Janowsky
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive MC 0804, La Jolla, CA 92093-0804, USA
| | - Berend Olivier
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Arpi Minassian
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive MC 0804, La Jolla, CA 92093-0804, USA
| | - William Perry
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive MC 0804, La Jolla, CA 92093-0804, USA
| | - Jared W Young
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive MC 0804, La Jolla, CA 92093-0804, USA; Research Service, VA San Diego Healthcare System, San Diego, CA, USA
| | - Mark A Geyer
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive MC 0804, La Jolla, CA 92093-0804, USA; Research Service, VA San Diego Healthcare System, San Diego, CA, USA.
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Veening JG, de Jong TR, Waldinger MD, Korte SM, Olivier B. The role of oxytocin in male and female reproductive behavior. Eur J Pharmacol 2014; 753:209-28. [PMID: 25088178 DOI: 10.1016/j.ejphar.2014.07.045] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 05/30/2014] [Accepted: 07/24/2014] [Indexed: 01/01/2023]
Abstract
Oxytocin (OT) is a nonapeptide with an impressive variety of physiological functions. Among them, the 'prosocial' effects have been discussed in several recent reviews, but the direct effects on male and female sexual behavior did receive much less attention so far. As our contribution to honor the lifelong interest of Berend Olivier in the control mechanisms of sexual behavior, we decided to explore the role of OT in the present review. In the successive sections, some physiological mechanisms and the 'pair-bonding' effects of OT will be discussed, followed by sections about desire, female appetitive and copulatory behavior, including lordosis and orgasm. At the male side, the effects on erection and ejaculation are reviewed, followed by a section about 'premature ejaculation' and a possible role of OT in its treatment. In addition to OT, serotonin receives some attention as one of the main mechanisms controlling the effects of OT. In the succeeding sections, the importance of OT for 'the fruits of labor' is discussed, as it plays an important role in both maternal and paternal behavior. Finally, we pay attention to an intriguing brain area, the ventrolateral part of the ventromedial hypothalamic nucleus (VMHvl), apparently functioning in both sexual and aggressive behavior, which are at first view completely opposite behavioral systems.
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Affiliation(s)
- J G Veening
- Department of Psychopharmacology, Division of Pharmacology, University of Utrecht, Utrecht, The Netherlands; Department of Anatomy, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - T R de Jong
- Department of Behavioral and Molecular Neurobiology, University of Regensburg, 93053 Regensburg, Germany
| | - M D Waldinger
- Department of Psychopharmacology, Division of Pharmacology, University of Utrecht, Utrecht, The Netherlands
| | - S M Korte
- Department of Psychopharmacology, Division of Pharmacology, University of Utrecht, Utrecht, The Netherlands
| | - B Olivier
- Department of Psychopharmacology, Division of Pharmacology, University of Utrecht, Utrecht, The Netherlands
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Verster JC, Bervoets AC, de Klerk S, Vreman RA, Olivier B, Roth T, Brookhuis KA. Effects of alcohol hangover on simulated highway driving performance. Psychopharmacology (Berl) 2014; 231:2999-3008. [PMID: 24563184 DOI: 10.1007/s00213-014-3474-9] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 01/27/2014] [Indexed: 11/25/2022]
Abstract
BACKGROUND The purpose of this study was to examine the effects of alcohol hangover on simulated highway driving performance. METHODS Driving performance of forty-two social drinkers was tested the morning following an evening of consuming on average 10.2 (SD = 4.2) alcoholic drinks (alcohol hangover) and on a control day (no alcohol consumed). Subjects performed a standardized 100-km highway driving test in the STISIM driving simulator. In addition to the standard deviation of lateral position (SDLP; i.e., the weaving of the car), lapses of attention were examined. Self-reported driving quality and driving style were scored, as well as mental effort to perform the test, sleepiness before and after driving, and hangover severity. RESULTS Driving performance was significantly impaired during alcohol hangover as expressed by an SDLP increase of +1.9 cm (t (1,41) = 2.851, p = 0.007), increased number of lapses relative to the control day (7.7 versus 5.3 lapses, t (1,41) = 2.125, p = 0.019), and an increased total lapse time (182.7 versus 127.3 s, p = 0.040). During alcohol hangover, subjects reported their driving quality to be significantly poorer (t (1,41) = 4.840, p = 0.001) and less safe (t (1,41) = 5.078, p = 0.001), wise (t (1,41) = 4.061, p = 0.001), predictable (t (1,41) = 3.475, p = 0.001), and responsible (t (1,41) = 4.122, p = 0.001). Subjects further reported being significantly more tense while driving (t (1,41) = 3.280, p = 0.002), and more effort was needed to perform the driving test (t (1,41) = 2.941, p = 0.001). There was a significant interaction with total sleep time and hangover effects on SDLP and the number of lapses. CONCLUSIONS In conclusion, driving is significantly impaired during alcohol hangover, as expressed in an elevated SDLP and increased number of lapses. Total sleep time has a significant impact on the magnitude of driving impairment.
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Affiliation(s)
- Joris C Verster
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands,
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Borre Y, Morgan M, Koelink P, Bezemer G, Westphal K, Olivier B, Oosting R, Garssen J, Kraneveld A. Neurodegeneration-induced cognitive deficits are associated with severe gastrointestinal disturbances, which were attenuated by dietary, but not pharmacological intervention: Implications for novel therapies. PharmaNutrition 2014. [DOI: 10.1016/j.phanu.2013.11.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hendriksen H, Olivier B, Oosting RS. From non-pharmacological treatments for post-traumatic stress disorder to novel therapeutic targets. Eur J Pharmacol 2014; 732:139-58. [DOI: 10.1016/j.ejphar.2014.03.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 03/17/2014] [Accepted: 03/24/2014] [Indexed: 10/25/2022]
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Snoeren EM, Veening JG, Olivier B, Oosting RS. Serotonin 1A receptors and sexual behavior in female rats: A review. Pharmacol Biochem Behav 2014; 121:43-52. [DOI: 10.1016/j.pbb.2013.11.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 10/31/2013] [Accepted: 11/15/2013] [Indexed: 12/19/2022]
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Snoeren EM, Veening JG, Olivier B, Oosting RS. Serotonin 1A receptors and sexual behavior in male rats: A review. Pharmacol Biochem Behav 2014; 121:102-14. [DOI: 10.1016/j.pbb.2013.11.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 10/08/2013] [Accepted: 11/07/2013] [Indexed: 12/21/2022]
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Poels S, Bloemers J, van Rooij K, Koppeschaar H, Olivier B, Tuiten A. Two novel combined drug treatments for women with hypoactive sexual desire disorder. Pharmacol Biochem Behav 2014; 121:71-9. [DOI: 10.1016/j.pbb.2014.02.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 02/03/2014] [Accepted: 02/05/2014] [Indexed: 01/23/2023]
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49
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Janssen PK, van Schaik R, Zwinderman AH, Olivier B, Waldinger MD. The 5-HT1A receptor C(1019)G polymorphism influences the intravaginal ejaculation latency time in Dutch Caucasian men with lifelong premature ejaculation. Pharmacol Biochem Behav 2014; 121:184-8. [DOI: 10.1016/j.pbb.2014.01.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 12/29/2013] [Accepted: 01/07/2014] [Indexed: 01/09/2023]
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