目的研究选择性5-羟色胺再摄取抑制剂(SSRIs)帕罗西汀对SD大鼠睡眠呼吸暂停的影响。方法30只成年雄性SD大鼠随机分为帕罗西汀治疗组及对照组,每组15只,分别给予腹腔注射帕罗西汀(10mg·kg^-1·d^-1)及灭菌蒸馏水(2mL·kg^-1·d^-1)共7d。给药前后分别进行睡眠监测,观察睡眠呼吸暂停指数(AI)及睡眠结构的变化。结果帕罗西汀治疗组AI由(12.4±3.7)次/h降至(7.4±2.2)次/h(P=0.000),非快动眼睡眠(NREM)期叹息后呼吸暂停指数(PSAI)及自发呼吸暂停指数(SPAI)均有显著性下降(P=0.000,0.021),快动眼睡眠(REM)期呼吸暂停指数的下降无统计学意义。给予帕罗西汀后REM睡眠由8.6%降至8.0%(P=0.013),入睡潜伏时间由(20.7±9.1)min增至(30.0±15.7)min(P=0.038),REM潜伏期时间由(54.1±48.4)min增至(110.9±43.4)min(P=0.001)。对照组上述指标的变化均无统计学意义(P均〉0.05)。结论帕罗西汀可改善SD大鼠的睡眠呼吸暂停指数(AI)及NREM期PSAI和SPAI,对睡眠结构的影响表现为抑制REM睡眠并延长入睡潜伏期。
Objective To evaluate the effects of selective serotonin reuptake inhibitors (SSRIs) on sleep apneas in Sprague-Dawley (SD) rats. Methods Thirty adult male SD rats were randomly divided into two groups ( 15 rats in each group). The treatment group and the control group were injected intraperitoneally with paroxetine (10 mg·kg^-1·d^-1) and sterile distilled water (2 mL· kg^-1· d^-1) for 7 days respectively. Parameters about sleep apnea and sleep structure were measured before and after the treatment. Results In the treatment group, there was a significant reduction of apnea index (AI) from ( 12.4 ± 3.7 ) times/hour to (7.4 ± 2.2) times/hour ( P = 0. 000 ). Both post sigh apnea index ( PSAI ) and spontaneous apnea index (SPAI) were decreased significantly (P =0. 000 and 0. 021 respectively) in non-rapid eye movement (NREM) sleep, but not in REM sleep. REM sleep was reduced from 8.6% to 8.0% ( P = 0. 013) and its latency was increased from (54.1 ± 48.4) min to ( 110.9 ± 43.4) min ( P = 0. 001 ) in the treatment group, as well as the sleep-onset latency [ from ( 20. 7 ± 9. 1 ) min to ( 30.0 ± 15.7 ) min, P = 0. 038 ]. Conclusion Paroxetine can reduce sleep apneas in SD rats during NREM sleep. Its effects on sleep structure include reducing REM time, increasing REM latency and sleep-onset latency.