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Gao M, Geng B, Jannini TB, Wu J, Wang Y, Zhang Y, Yuan J, Jannini EA, Liu P, Yin C. Thalamocortical Dysconnectivity In Lifelong Premature Ejaculation: A Functional MRI Study. Urology 2021; 159:133-138. [PMID: 34688769 DOI: 10.1016/j.urology.2021.10.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/10/2021] [Accepted: 10/12/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To detect seed-based functional connectivity (FC) between various cortical sub-regions and the thalamus in lifelong premature ejaculation (LPE) patients and explore whether specific thalamocortical networks are significantly altered in PE patients compared to healthy controls (HCs) METHODS: Fifty non-medicated LPE patients and 40 age-matched HCs underwent a resting-state functional MRI. FC was adopted to identify specific thalamocortical connectivity between the thalamus and 6 cortical regions of interest (i.e., the motor cortex/supplementary motor, the prefrontal cortex, the temporal lobe, the posterior parietal cortex, the somatosensory cortex and the occipital lobe). In LPE patients, regression analysis was subsequently conducted to assess relationships of thalamocortical connectivity with the Premature Ejaculation Diagnostic Tool (PEDT) score and the Intravaginal Ejaculatory Latency Time (IELT). RESULTS LPE patients had significantly decreased FC between the motor cortex and bilateral ventral thalamus, between the prefrontal cortex and left dorsomedial thalamus, as well as between the temporal cortex and bilateral ventromedial thalamus. In LPE patients, PEDT score was significantly positively associated with the thalamus-posterior parietal cortex FC, and negatively associated with the thalamus-temporal cortex FC, while IELT was positively associated with the thalamus-temporal cortex and thalamus-motor cortex FC. CONCLUSION These results enrich the imaging evidence for the understanding of the neurobiological mechanisms and/or consequences of LPE.
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Affiliation(s)
- Ming Gao
- Department of Urology, Xi'An DaXing Hospital of Shaanxi University of Chinese Medicine, Xi'an, China; Department of Andrology, XiYuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Bowen Geng
- Life Science Research Center, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, China; Engineering Research Center of Molecular and Neuro Imaging Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, China
| | - Tommaso B Jannini
- School of Psychiatry, Department of Systems Medicine, University of Rome Tor Vergata, Via Montpellier, Roma, Italy
| | - Jiayu Wu
- Life Science Research Center, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, China; Engineering Research Center of Molecular and Neuro Imaging Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, China
| | - Yanzhu Wang
- Department of Urology, Xi'An DaXing Hospital of Shaanxi University of Chinese Medicine, Xi'an, China
| | - Yuntao Zhang
- Department of Urology, Xi'An DaXing Hospital of Shaanxi University of Chinese Medicine, Xi'an, China
| | - Jianlin Yuan
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Emmanuele A Jannini
- Chair of Endocrinology and Medical Sexology, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy.
| | - Peng Liu
- Life Science Research Center, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, China; Engineering Research Center of Molecular and Neuro Imaging Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, China.
| | - Chuanmin Yin
- Department of Urology, Xi'An DaXing Hospital of Shaanxi University of Chinese Medicine, Xi'an, China.
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Hernández-Arteaga E, Hernández-González M, Bonilla-Jaime H, Guevara MA, Ågmo A. Pubertal stress decreases sexual motivation and supresses the relation between cerebral theta rhythms and testosterone levels in adult male rats. Brain Res 2020; 1745:146937. [PMID: 32505750 DOI: 10.1016/j.brainres.2020.146937] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 05/27/2020] [Accepted: 06/03/2020] [Indexed: 11/28/2022]
Abstract
This study evaluated the effect of stress during puberty on sexual motivation and the correlation between serum testosterone levels (T) and the absolute power of the theta electroencephalographic rhythms, recorded in the medial prefrontal cortex (mPFC) and basolateral amygdala (BLA) of adult male rats. Thirty males of the stressed group (SG, housed 1 per cage from days 25-50) and 30 controls (CG, housed 5 per cage), were tested in copulatory interactions at 90 days of age. The above mentioned physiological parameters were obtained during the awake-quiet state in a sub-group without sexual motivation (WSM, n = 15, stimulated with a nonreceptive female) and a sub-group with sexual motivation (SM, n = 15, stimulated with a receptive-female). Pearson correlations (r) between these parameters were calculated for each sub-group and brain structure and then compared between sub-groups. SG presented higher mount and intromission latencies than CG. While CG-WSM showed a positive r between T levels and theta band (0.23-0.59), those CG-SM presented a negative r (-0.23 to -0.67). An r that tended towards zero (-0.31 to 0.29) was obtained in both stressed sub-groups. This study shows that pubertal stress suppresses the relation between serum T levels and theta rhythms in the mPFC and BLA in adult male rats. This is one of the first studies evaluating the association between these two physiological parameters specifically in the context of sexual motivation; thus increasing our understanding of the effect of pubertal stress on prefrontal-amygdaline functioning during the sexually-motivated state in male rats.
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Affiliation(s)
| | | | - Herlinda Bonilla-Jaime
- Departamento de Biología de la Reproducción, Universidad Autónoma Metropolitana, Iztapalapa, Mexico
| | - Miguel Angel Guevara
- Instituto de Neurociencias, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Anders Ågmo
- Psychology Department, Tromsø University, Tromsø, Norway
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Cortes PM, Hernández-Arteaga E, Sotelo-Tapia C, Guevara MA, Medina AC, Hernández-González M. Effects of inactivation of the ventral tegmental area on prefronto-accumbens activity and sexual motivation in male rats. Physiol Behav 2019; 209:112593. [PMID: 31255646 DOI: 10.1016/j.physbeh.2019.112593] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/26/2019] [Accepted: 06/26/2019] [Indexed: 11/17/2022]
Abstract
Sexual motivation requires the processing of sexual stimuli. The prefrontal cortex (PFC) and nucleus accumbens (NAcc) receive dopaminergic innervation from the ventral tegmental area (VTA). Both structures participate in processing stimuli, and their adequate functioning is modulated by dopamine and other neurotransmitters. This study was designed to determine the effect of inactivation of the VTA on sexual motivation, relative power (RP) and electroencephalographic (EEG) correlation of the PFC and NAcc in male rats. A total of 20 rats implanted with electrodes in the left medial prefrontal cortex (mPFC) and NAcc, and with bilateral cannulae in the VTA, were divided into two groups of 10 rats each, one injected with tetrodotoxin (TTX), the other with a vehicle solution (VEH). EEGs from the mPFC and NAcc were recorded during the awake-quiet state in the presence of either a receptive or non-receptive female. The TTX group showed a lower preference for the receptive female accompanied by a lower RP of the 8-13 and 14-30 Hz bands in the mPFC. Also, in the presence of the receptive female, the TTX group had a lower RP of the 8-13 Hz band in the NAcc, but a higher prefronto-accumbens correlation in the same band. These results provide evidence that VTA activity is necessary for the adequate functioning of the mPFC and NAcc and, therefore, also for the adequate processing of sexually-relevant stimuli that allows the induction and maintenance of sexual motivation in male rats.
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Affiliation(s)
- Pedro Manuel Cortes
- Instituto de Neurociencias, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | | | - Carolina Sotelo-Tapia
- Instituto de Neurociencias, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Miguel Angel Guevara
- Instituto de Neurociencias, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Andrea Cristina Medina
- Departamento de Neurobiología Conductual y Cognitiva, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
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Hernández-González M, Hernández-Arteaga E, Guevara MA, Almanza-Sepúlveda ML, Ramírez-Rentería ML, Arteaga-Silva M, Bonilla-Jaime H. Prenatal stress suppresses the prefrontal and amygdaline EEG changes associated with a sexually-motivated state in male rats. Physiol Behav 2017; 182:86-92. [DOI: 10.1016/j.physbeh.2017.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 09/23/2017] [Accepted: 10/04/2017] [Indexed: 10/18/2022]
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Guo F, Xi YB, Gao M, Liu L, Fei NB, Qin W, Li C, Cui LB, Yan F, Yu L, Yuan JL, Yin H. Alterations in cortical thickness in nonmedicated premature ejaculation patients: A morphometric MRI study. J Magn Reson Imaging 2017; 47:656-662. [PMID: 28736888 DOI: 10.1002/jmri.25808] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 06/20/2017] [Indexed: 01/12/2023] Open
Affiliation(s)
- Fan Guo
- Department of Radiology; Xijing Hospital, The Fourth Military Medical University; Xi'an Shaanxi P.R. China
- Key Laboratory of Molecular Imaging of the Chinese Academy of Sciences; Institute of Automation, Chinese Academy of Sciences; Beijing P.R. China
| | - Yi-Bin Xi
- Department of Radiology; Xijing Hospital, The Fourth Military Medical University; Xi'an Shaanxi P.R. China
| | - Ming Gao
- Department of Urology; Xijing Hospital, The Fourth Military Medical University; Xi'an Shaanxi P.R. China
- Assisted Reproduction Center; Northwest Women and Children Hospital/Maternity Hospital of Shaanxi Province; Xi'an Shaanxi P.R. China
| | - Lin Liu
- Life Sciences Research Center; School of Life Sciences and Technology, Xidian University; Xi'an Shaanxi P.R. China
| | - Ning-Bo Fei
- Life Sciences Research Center; School of Life Sciences and Technology, Xidian University; Xi'an Shaanxi P.R. China
| | - Wei Qin
- Life Sciences Research Center; School of Life Sciences and Technology, Xidian University; Xi'an Shaanxi P.R. China
| | - Chen Li
- Department of Radiology; Xijing Hospital, The Fourth Military Medical University; Xi'an Shaanxi P.R. China
| | - Long-Biao Cui
- Department of Radiology; Xijing Hospital, The Fourth Military Medical University; Xi'an Shaanxi P.R. China
| | - Fei Yan
- Department of Urology; Xijing Hospital, The Fourth Military Medical University; Xi'an Shaanxi P.R. China
| | - Lei Yu
- Department of Urology; Xijing Hospital, The Fourth Military Medical University; Xi'an Shaanxi P.R. China
| | - Jian-Lin Yuan
- Department of Urology; Xijing Hospital, The Fourth Military Medical University; Xi'an Shaanxi P.R. China
| | - Hong Yin
- Department of Radiology; Xijing Hospital, The Fourth Military Medical University; Xi'an Shaanxi P.R. China
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