{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,4]],"date-time":"2026-06-04T16:31:18Z","timestamp":1780590678091,"version":"3.54.1"},"reference-count":36,"publisher":"Institute of Physiology of the Czech Academy of Sciences","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Physiol Res"],"published-print":{"date-parts":[[2019,12,30]]},"abstract":"<jats:p>Drug addiction and its consequences on social life and behavior is currently a worldwide problem. Methamphetamine (MA) is one of the most abused psychostimulants in the Czech Republic. MA elevates mood, increases concentration, reduces appetite, and promotes weight loss. However, high doses and long-term abuse can induce psychosis, hallucinations, paranoia, violent behavior, and can lead to cardiovascular problems. Regarding its high prevalence and negative impact on health and social life, MA needs to be fully investigated. Previous studies have demonstrated the impairing effect of MA drug abuse on female behavior. However, MA\u2019s influence on male sexual behavior is not entirely clear. The aim of this study was to examine the effect of MA exposure on sexual behavior and spontaneous locomotor activity of adult male rats. MA was administrated subcutaneously at a dose of 5 mg\/kg daily for a period of 30 days. The control group was exposed to saline (SA) at the same time and same volume. At the end of the application period, exposed male rats were paired with non-treated female rats, and their behavior was recorded for 2 h. Sexual mating behavior was described in terms of mounting frequency, intromission frequency, ejaculation frequency, sniffing time, intromission latency and the post-ejaculatory interval. Spontaneous locomotor activity in postnatally exposed male rats was studied using the Laboras apparatus. Acute doses of MA (1 mg\/kg) or SA were administrated to probe the sensitizing effect of previous chronic MA exposure. Afterward, the animal was placed in an unknown environment and monitored for 1 h. Behavior was automatically evaluated using Laboras software by analyzing the following parameters: duration of locomotion (s), duration of immobility (s), rearing (vertical exploratory behavior), time spent grooming (s), average speed (mm\/s), and distance traveled (m). Our results indicate that MA administration has a negligible effect on the sexual behavior of adult male rats. However, more experiments have to be performed to examine the influence of MA exposure on spermatogenesis and the behavior of offspring. Data from the Laboras test showed that MA exposure has a significant effect on locomotor activity in both acute as well as subchronic MA application. In conclusion, our results show that administration of MA in adult male rats does not affect sexual performance and motivation but does increase locomotor and exploratory activity in an unknown environment.<\/jats:p>","DOI":"10.33549\/physiolres.934357","type":"journal-article","created":{"date-parts":[[2020,1,29]],"date-time":"2020-01-29T09:12:03Z","timestamp":1580289123000},"page":"S339-S346","source":"Crossref","is-referenced-by-count":4,"title":["Effect of Methamphetamine Exposure on Sexual Behavior and Locomotor Activity of Adult Male Rat"],"prefix":"10.33549","author":[{"given":"L.","family":"MIHAL\u010c\u00cdKOV\u00c1","sequence":"first","affiliation":[{"name":"Department of Physiology, Third Faculty of Medicine, Charles University, Prague, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"OCHOZKOV\u00c1","sequence":"additional","affiliation":[{"name":"Department of Physiology, Third Faculty of Medicine, Charles University, Prague, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R.","family":"\u0160LAMBEROV\u00c1","sequence":"additional","affiliation":[{"name":"Department of Physiology, Third Faculty of Medicine, Charles University, Prague, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"19169","published-online":{"date-parts":[[2019,12,20]]},"reference":[{"key":"ref0","unstructured":"ABEL EL: Paternal behavioral mutagenesis. 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