Slow sleep oscillation, rhythmic K-complexes, and their paroxysmal developments

This paper presents the relations between the slow (< 1 Hz) oscillation (characterizing the activity of corticothalamic networks during quiescent sleep in cats and humans), sleep K-complexes, and some paroxysmal developments of sleep patterns. At the cellular level, the slow oscillation is built up by rhythmic membrane depolarizations and hyperpolarizations of cortical neurons. The EEG expression of this activity is marked by periodic K-complexes which reflect neuronal excitation. The slow oscillation triggers, groups and synchronizes other sleep rhythms, such as thalamically generated spindles as well as thalamically and cortically generated delta oscillations. We discuss the distinctness of the slow (< 1 Hz) and delta (1–4 Hz) oscillations. We also show that the slow cortical oscillation underlies the onset of spike-wave seizures during sleep by transforming the periodic K-complexes into recurrent paroxysmal spike-wave complexes.     

Oxygen uptake kinetics during treadmill running across exercise intensity domains

The purpose of the present study was to examine comprehensively the kinetics of oxygen uptake ( ) during treadmill running across the moderate, heavy and severe exercise intensity domains. Nine subjects [mean (SD age, 27 (7) years; mass, 69.8 (9.0) kg; maximum , , 4,137 (697) ml·min^–1] performed a series of "square-wave" rest-to-exercise transitions of 6 min duration at running speeds equivalent to 80% and 100% of the at lactate threshold (LT; moderate exercise); and at 20%, 40%, 60%, 80% and 100% of the difference between the at LT and (Δ, heavy and severe exercise). Critical velocity (CV) was also determined using four maximal treadmill runs designed to result in exhaustion in 2–15 min. The response was modelled using non-linear regression techniques. As expected, the amplitude of the primary component increased with exercise intensity [from 1,868 (136) ml·min^–1 at 80% LT to 3,296 (218) ml·min^–1 at 100% Δ, P<0.05]. However, there was a non-significant trend for the "gain" of the primary component to decrease as exercise intensity increased [181 (7) ml·kg^–1·km^–1 at 80% LT to 160 (6) ml·kg^–1·km^–1 at 100% Δ]. The time constant of the primary component was not different between supra-LT running speeds (mean value range = 17.9–19.1 s), but was significantly shorter during the 80% LT trial [12.7 (1.4) s, P<0.05]. The slow component increased with exercise intensity from 139 (39) ml·min^–1 at 20% Δ to 487 (57) ml·min^–1 at 80% Δ (P<0.05), but decreased to 317 (84) ml·min^–1 during the 100% Δ trial (P<0.05). During both the 80% Δ and 100% Δ trials, the at the end of exercise reached [4,152 (242) ml·min^–1 and 4,154 (114) ml·min^–1, respectively]. Our results suggest that the "gain" of the primary component is not constant as exercise intensity increases across the moderate, heavy and severe domains of treadmill running. These intensity-dependent changes in the amplitudes and kinetics of the response profiles may be associated with the changing patterns of muscle fibre recruitment that occur as exercise intensity increases. Electronic Publication     

Effects of different speeds of induction with sevoflurane on the EEG in Man

The effects of two kinds of induction speed of sevoflurane anesthesia on the EEG pattern were compared in the same individual using medical student volunteers: a first exposure of 4% was given, followed after full recovery, by incremental doses of 1, 2 and 4% successively, each being administered for 10min. The arterial blood level of the anesthetic was measured using gaschromatograph. The changes of EEG pattern during fast induction with 4% were not represented by the abbreviation of those observed during the slow induction with the incremental doses. The administration of 4% induced a sudden appearance of high voltage, rhythmic slow waves of 2–3Hz at 1–3min when the arterial blood anesthetic level increased maximally, which was then followed by a pattern of faster activities of 10–14Hz mixed with 5–8Hz slow waves. In contrast, the administration of incremental doses induced an increase in frequency and amplitude of EEG activities in the light plane, followed by their decreases in deeper planes. The final EEG patterns were identical for both these methods of induction. These findings confirmed our previous hypothesis that not only the arterial blood level of anesthetics but the rate of its increase are important factors determining the EEG pattern of anesthesia.(Avramov MN et al.: Effects of different speeds of induction with sevoflurane on the EEG in man. J Anesth 1: 1–7, 1987)     

基于CiteSpace的中医药治疗便秘的知识图谱可视化分析

目的：了解国内外在中医药治疗便秘这一领域的研究现状及热点,为今后的研究提供参考和方向。方法：该研究通过运用数据分析软件CiteSpace 5.8.R3C对中国知网（CNKI）和Web of Science核心数据库中2000年1月1日至2021年12月31日关于中医药治疗便秘的相关文献进行计量学分析,并进行可视化展示。结果：经筛选,CNKI数据库纳入文献2 133篇,Web of Science核心数据库纳入文献224篇。年发文量统计分析显示国内外在该研究领域整体均呈现上升趋势,但国内发文量近两年连续下降;作者共现分析显示国内外发文量最多的作者分别是刘春强和CHUNGWAH CHENG;机构共现分析显示国内外发文量最多的机构分别是上海中医药大学附属龙华医院肛肠科和北京中医药大学;关键词分析显示国内外对于该领域的研究主要集中在中药疗法、临床研究、病因病机等方面。结论：对于中医药治疗便秘的研究主要集中在国内,但未形成联系较为紧密的科研团队;国内外对于该领域的研究仍处于发展时期,随着研究的不断深入,各研究机构应注重学科交叉,突出技术创新,争取做到在该领域的更大突破。     

枳实-白术调节PINK1/Parkin信号通路介导的线粒体自噬改善慢传输型便秘大鼠结肠动力障碍

目的：基于线粒体自噬及磷酸酶及张力蛋白同源物诱导的蛋白激酶1(PINK1)/帕金蛋白(Parkin)通路观察枳实、白术及其配伍对慢传输型便秘大鼠结肠动力障碍的改善作用,为临床精准用药提供理论参考。方法：将56只雄性SD大鼠按体质量随机分成正常组、模型组、自然恢复组、枳实组、白术组、枳实-白术组和莫沙必利组,每组各8只。除正常组外,采用洛哌丁胺连续14 d灌胃(3 mg·kg^-1·d^-1)构建慢传输型便秘大鼠模型。造模成功后,除模型组继续洛哌丁胺诱导外,正常组和自然恢复组采用0.9%生理盐水灌胃,枳实组(1.35 g·kg^-1·d^-1)、白术组(2.7 g·kg^-1·d^-1)、枳实-白术组(4.05 g·kg^-1·d^-1)和莫沙必利组(1.56 mg·kg^-1·d^-1)大鼠分别给予相应的药物灌胃,连续7 d。观察药物对大鼠粪便数量、粪便含水率及小肠推进率的影响;苏木素-伊...     

益气活血通便方对慢传输型便秘大鼠的治疗作用及机制

目的：探讨益气活血通便方对慢传输型便秘(STC)大鼠的治疗作用及机制。方法：采用盐酸洛哌丁胺灌胃法建立STC大鼠模型,设定正常组、模型组、莫沙必利组、益气活血通便方低、中、高剂量组(3.51、7.02、14.04 g·kg^-1)给药后观察各组大鼠一般体征变化、计算粪便含水率及肠道推进率;采用苏木素-伊红染色观察结肠组织黏膜炎症改变;采用酶联免疫吸附测定法检测各组大鼠结肠P物质(SP)、血管活性肠肽(VIP)含量;采用免疫组织化学法和蛋白免疫印迹法检测大鼠结肠组织水通道蛋白(AQP)3、AQP4、AQP8和c-Kit蛋白灰度值,通过16S r RNA高通量测序检测肠道菌群变化。结果：经过益气活血通便方给药治疗10 d后,与模型组比较,益气活血通便方不同剂量组和莫沙必利组大鼠的粪便含水率和肠道推进率均显著增加(P<0.01)。与模型组比较,益气活血通便方中、高剂量组和莫沙必利组大鼠结肠无明显黏膜炎症改变,杯状细胞排列较规整无断裂、数量较多。益气活血通便方中、高剂量组和莫沙必利组血清中SP含量明显升高(P<0.05,P<0.01),VIP明显降低(P&...     

腹部推拿联合艾灸治疗脾虚型功能性便秘的临床疗效

目的：分析腹部推拿联合艾灸治疗脾虚型功能性便秘的临床疗效。方法：选取郑州人民医院2021年11月至2023年1月期间收治的78例脾虚型功能性便秘患者,其中艾灸治疗的39例患者纳入对照组,在艾灸治疗基础上联合腹部推拿治疗的39例患者纳入观察组。治疗后,比较两组患者临床疗效与相关临床指标。结果：观察组患者总有效率高于对照组,差异具有统计学意义（P <0.05）;治疗后,观察组患者排便次数、大便性状、盆底松弛程度、阻塞感、排便不尽感积分均低于对照组,差异具有统计学意义（P <0.05）;治疗后,观察组患者直肠肛管压差、力排时肛管残余压均低于对照组,差异具有统计学意义（P <0.05）;治疗后,观察组患者血清胃动素（MTL）、P物质（SP）水平均高于对照组,生长抑素（SS）水平低于对照组,差异具有统计学意义（P <0.05）。结论：腹部推拿联合艾灸治疗脾虚型功能性便秘可进一步改善患者相关临床指标。     

玻璃化解冻和慢速解冻在程序化冷冻胚胎解冻移植中的比较研究

目的探讨玻璃化解冻(vitrificative thawing,VT)和慢速解冻(slow thawing,ST)对程序化冷冻胚胎解冻移植的影响,优化程序化冷冻胚胎的解冻方案,从而提高不孕不育临床治疗效果。方法选取2016年1月至2018年12月解放军第九六〇医院生殖医学中心行解冻胚胎移植的400例患者,使用随机数分配的方式(Excel数据随机分组),分为VT组(200例)和ST组(200例),比较两组患者最初施行体外受精-胚胎移植(invitro fertilization-embryo transfer,IVF-ET)时的基本情况、胚胎发育情况及本次移植胚胎复苏情况、移植情况和临床妊娠结局。结果两组患者年龄、不孕年限、获卵数、促性腺激素(gonadotropins,Gn)用量和基础促卵泡成熟激素(follicle stimulating hormone,FSH)值等基本情况比较,差异无统计学意义(P>0.05),两组MⅡ卵率(metaphase II egg rate)、受精率、卵裂率、优质胚胎率、可用胚胎率和冷冻胚胎率比较,差异无统计学意义(P>0.05)。但VT组的胚胎复苏完整率和复苏可用率(88.34%、97.51%)明显高于ST组(72.47%、82.23%),差异有统计学意义(P<0.001);两组患者胚胎移植日移植次数、移植胚胎数和内膜厚度比较,差异无统计学意义(P>0.05);两组临床妊娠结局比较,差异无统计学意义(P>0.05)。结论VT可以显著提高程序化冷冻胚胎的复苏效果,提高程序化冷冻胚胎患者的胚胎利用率,可以考虑成为ST的较好替代方案。     

耻骨直肠肌部分切除治疗耻骨直肠肌综合征1 49例

目的观察耻骨直肠肌部分切除术的治疗效果.方法149例经直肠排粪造影和耻骨直肠肌肌电图确诊为耻骨直肠肌综合征患者,经尾骨下正中切口行耻骨直肠肌部分切除术,术后观察其临床症状改善情况,复查直肠排粪造影了解其影像学变化.结果手术后排便困难均得到完全缓解,肛门坠胀或疼痛有15例未完全消除,但程度明显减轻;直肠排粪造影显示耻骨直肠肌压迹消失.结论耻骨直肠肌部分切除术治疗耻骨直肠肌综合征方法简便,疗效好,并发症少.     

“治未病”思想在慢性便秘防治实践中的应用

“治未病”思想是中医学的重要组成部分,其核心思想分为3个方面:“未生先防”强调防患于未然,避免疾病的发生;“未盛防变”强调已病早治,防止其进展及传变,避免其他脏腑受累;“已衰防复”强调在疾病初愈之时,注意调摄,以防疾病复发。“治未病”思想在慢性便秘防治中发挥了重要作用,通过多样的手段干预慢性便秘患者各个病程阶段,对改善患者生命质量具有重要意义。