妊娠期妇女高危型人乳头瘤病毒感染与宫颈病变的相关性研究

目的探讨妊娠期妇女高危型人乳头瘤病毒(HR-HPV)感染与宫颈病变的相关性。方法选取重庆华西妇产医院就诊的18~43岁妊娠期妇女486例,行第二代分子杂交捕获技术(HC2-HPV-DNA)和超微病原体可视检测技术(TH)2种方法联合检测及电子阴道镜下病理活检,以病理活检结果为诊断宫颈病变的金标准。结果 486例妊娠期妇女HR-HPV检测阳性患者161例,阳性率33.12%(161/486);病理组织学诊断出宫颈癌(ICC)及癌前病变(CIN)24例;HPV阳性患者的宫颈癌及癌前病变22例,敏感性91.67%(22/24)。HR-HPV感染情况在不同年龄段分布,差异有统计学意义(P0.05),HR-HPV病毒载量及阳性表达率越高,宫颈病变的程度越高。结论妊娠期妇女不同年龄段的HR-HPV感染率不同;HR-HPV阳病毒载量与CIN及ICC发生有关,与宫颈病变的发生过程有关,但与宫颈病变的严重程度无关;妊娠期妇女HPV感染的宫颈病变阳性率和病毒载量与非妊娠期妇女相似;HC2-HPV-DNA法是目前筛查癌前病变及宫颈癌的最佳方法。     

A Mobile Game Platform for Improving Social Communication in Children with Autism: A Feasibility Study

Background  Many children with autism cannot receive timely in-person diagnosis and therapy, especially in situations where access is limited by geography, socioeconomics, or global health concerns such as the current COVD-19 pandemic. Mobile solutions that work outside of traditional clinical environments can safeguard against gaps in access to quality care. Objective  The aim of the study is to examine the engagement level and therapeutic feasibility of a mobile game platform for children with autism. Methods  We designed a mobile application, GuessWhat , which, in its current form, delivers game-based therapy to children aged 3 to 12 in home settings through a smartphone. The phone, held by a caregiver on their forehead, displays one of a range of appropriate and therapeutically relevant prompts (e.g., a surprised face) that the child must recognize and mimic sufficiently to allow the caregiver to guess what is being imitated and proceed to the next prompt. Each game runs for 90 seconds to create a robust social exchange between the child and the caregiver. Results  We examined the therapeutic feasibility of GuessWhat in 72 children (75% male, average age 8 years 2 months) with autism who were asked to play the game for three 90-second sessions per day, 3 days per week, for a total of 4 weeks. The group showed significant improvements in Social Responsiveness Score-2 (SRS-2) total (3.97, p <0.001) and Vineland Adaptive Behavior Scales-II (VABS-II) socialization standard (5.27, p  = 0.002) scores. Conclusion  The results support that the GuessWhat mobile game is a viable approach for efficacious treatment of autism and further support the possibility that the game can be used in natural settings to increase access to treatment when barriers to care exist.     

P38MAPK信号转导通路与血管细胞增殖及缺血再灌注的关系

丝裂原活化蛋白激酶(mitogen-activated protein kinase,MAPK)是广泛表达的丝氨酸/酪氨酸激酶,在真核生物细胞多种信号转导通路中起重要的作用,受多种因素的调控,作用底物多种多样。P38信号通路是MAPK通路中相当重要的一个分支,在炎症、细胞应激、凋亡、细胞周期和生长等多种生理、病理过程中起着重要作用。     

医院医疗设备商业贿赂及其防治对策

商业贿赂是商品经济发展的一种负面经济现象，各行各业几乎都存在着商业贿赂，医疗界和医院也不例外。我国的医院等事业单位，因为具有某种公共权力、肩负着特殊的使命、具有公益性等特点，容易成为商业贿赂的目标单位。建设清正廉洁的医院既是深化医院体系改革的核心要求，也是防范医药购销领域商业贿赂行为发生的重要举措。     

Update on energy homeostasis and insufficient sleep

Driven by the demands and opportunities of modern life, many people habitually sleep less than 6 h a night. In the sleep clinic, chronic sleep restriction is recognized by the diagnosis of insufficient sleep syndrome (ICSD-9, 307.49-4), which is receiving increased scrutiny as a potential risk to metabolic health. Its relevance for the practicing endocrinologist is highlighted by a stream of epidemiological data that show an association of insufficient sleep with increased incidence of obesity and related morbidities. A central theme of this update is the notion that sleep loss incurs additional metabolic cost, which triggers a set of neuroendocrine, metabolic, and behavioral adaptations aimed at increasing food intake and conserving energy. Although this coordinated response may have evolved to offset the metabolic demands of extended wakefulness in natural habitats with limited food availability, it can be maladaptive in the context of a modern environment that allows many to overeat while maintaining a sedentary lifestyle without sufficient sleep. Importantly, such sleep loss-related metabolic adaptation may undermine the success of behavioral interventions based on reduced caloric intake and increased physical activity to lower metabolic risk in obesity-prone individuals. This emerging perspective is based on data from recently published human interventional studies and requires further experimental support. Nevertheless, it now seems prudent to recommend that overweight and obese individuals attempting to reduce their caloric intake and maintain increased physical activity should obtain adequate sleep and, if needed, seek effective treatment for any coexisting sleep disorders.     

冠状动脉粥样硬化与外周血CD4＋CD28-T细胞的关系

目的探讨冠心病患者外周血CD4＋CD28-T细胞水平变化,以及CD4＋CD28-T细胞与冠状动脉粥样硬化严重程度的相关性。方法选择2012-06／2012—12月在南方医科大学珠江医院心血管内科住院、经冠状动脉造影术检查的患者57例,其中造影检查正常对照组13例,稳定型心绞痛组14例,不稳定型心绞痛组15例,急性心肌梗死组15例。采用流式细胞仪检测外周血CD4＋CD28T细胞占CD4＋T细胞比例,并对其与冠状动脉粥样硬化严重程度（改良Gensini标准）进行相关性分析。结果①外周血CD4＋CD28-T细胞占CD4＋淋巴细胞比例在对照组、稳定型心绞痛组、不稳定型心绞痛组、心肌梗死组分别为（12．61±9．06）％,（13．04±6．44）％,（20．68±9．50）％和（22．65±11．55）％。急性心肌梗死组、不稳定型心绞痛组较稳定型心绞痛组、对照组存在统计学差异（P〈0．05）,而急性心肌梗死组与不稳定型心绞痛组之间、稳定型心绞痛组与对照组之间的差异无统计学差异（P均〉0．05）。②外周血CD4＋CD28-T细胞比例与Gensini评分呈正相关（r=0．399,P〈0．01）。结论CD4＋CD28-T细胞参与了冠心病的发生发展,是导致动脉粥样斑块的不稳定的原因之一,对冠心病临床危险分层有一定的预测价值。     

Estimating cardiac autonomic activity during sleep: impedance cardiography, spectral analysis, and Poincaré plots.

OBJECTIVE: To compare noninvasive measures of cardiac autonomic activity during sleep. METHODS: The absolute and normalized (n.u.) high and low frequency peaks from the spectral analysis of R-R intervals (HF, LF, HFn.u., LFn.u.), LF/HF ratio, pre-ejection period (PEP) from impedance cardiography, and the autocorrelation coefficient (rRR) as illustrated in Poincaré plots were measured during night-time sleep in 9 young healthy subjects. Heart rate and blood pressure were also recorded. RESULTS: Heart rate was significantly associated with cardiac sympathetic activity (PEP, average r=-0.46), but not with cardiac parasympathetic activity (HF, average r=-0.17). rRR was significantly associated with heart rate (average r=0.41), and LF/HF (average r=0.69), but not with PEP or HF. From NREM to REM sleep, heart rate, LFn.u., LF and rRR significantly increased, HFn.u. significantly decreased, LF/HF showed an increasing trend (P=0.07) and PEP showed a decreasing trend (P=0.06). Blood pressure and HF were highly variable without significant changes from NREM to REM sleep. CONCLUSIONS: Cardiac parasympathetic activity (HF) does not vary greatly between sleep stages. Cardiac sympathetic activity (PEP) decreases linearly during sleep. rRR and LF/HF can track sympathovagal changes during sleep, but cannot differentiate between changes in cardiac parasympathetic and sympathetic activity. The relative advantages and disadvantages of the different measures are discussed.     

Differential chemokine response of murine macrophages stimulated with cytokines and infected with Listeria monocytogenes

During inflammatory processes the infected macrophage is a rich source of chemokines which induce infiltration of leukocytes to the site of infection. We investigated the regulation of chemokine production by murine macrophages in response to infection with the intracellular bacterial pathogen, Listeria monocytogenes. As a source of quiescent macrophages, murine bone marrow-derived macrophages (BMM) cultured under serum-free conditions were used. With RT-PCR, we detected induction of RNA message for the chemokines macrophage inflammatory protein (MIP)-2, KC, MIP-1alpha, MIP-1beta, IFN-gamma-inducible protein- 10 and RANTES in L. monocytogenes-infected macrophages. Accordingly, ELISA-detectable MIP-1alpha, MIP-2 and KC protein was induced by infection with L. monocytogenes. In contrast, L. monocytogenes infection of BMM alone failed to induce considerable expression of monocyte chemoattractant protein (MCP)-1 at the mRNA or protein level, but co-treatment with IFN-gamma was necessary. Release of infection- triggered MIP-2, MIP-1alpha and KC was negatively regulated by IFN- gamma. Similarly, IL-4 stimulated MCP-1 release by infected macrophages but reduced production of MIP-1alpha, MIP-2 and KC. IL-10 turned out to be a general deactivator in terms of macrophage chemokine production. IL-13 had no effect on MIP-1alpha, MIP-2 and KC production by infected BMM, but slightly reduced MCP-1 release. By using IFN-gamma and IL-4 gene deletion mutant mice, in vivo regulation of these chemokines by IL- 4 and IFN-gamma in listeriosis was studied. In summary, our results show that chemokines are produced by macrophages infected with L. monocytogenes, and that chemokine release is differentially regulated by the macrophage modulators IFN-gamma, IL-4, IL-10 and IL-13.      

Quantitative expediency assessment of the zeta sedimentation ratio and the plasma viscosity in arterial hypertension research

Accepted methods of the ESR methodology (the Westergren mode and ZSR mode) and its alternative the plasma viscosity were tested for diagnostic utility in pregnancy induced hypertension and pre-eclampsia. The receiver-operating characteristic curve (ROC) analysis approved moderate diagnostic accuracy for the ESR methodology and supplied support for its preliminary estimated cutoff values but failed to indicate cogent discernment of pathology by values of plasma viscosity. Likely pathological whole blood alterations boost the erythrocyte aggregation while the concomitant depletion of macromolecules degrades plasma viscosity values.     

Noninvasive Assessment by Doppler and M-Mode Echocardiography of Hemodynamic Responses to Temporary Pacing and to Ventriculoatrial Conduction

A new, dual-chamber temporary pacing lead was introduced via the subclavian vein in 20 patients who needed a temporary pacemaker. Stroke volume (SV) was measured continuously by combining M-mode and noninvasive Doppier echocardiography during spontaneous rhythm (SR), AV sequential pacing at a positive AV interval (DP), ventricular pacing (VP) and AV sequential pacing at a negative AV interval (VA pacing). The valvular functions were determined by Doppler echocardiography. Left ventricular dimensions and function, and left atrial size were measured by M-mode echocardiography. In the nine patients with no valvular heart disease and with no ventriculoatrial (VA) conduction (group I) the CO increased 83 ±11% during DP and 42 ± 9% during VP as compared to during SR when the heart rate (HE) was increased from 34 ± 3 to 72 ± 1 beats/min. The CO was 29 ± 3% higher during DP than that during VP. In the seven patients with valvulox heart disease and with no VA conduction (group II), the increment in CO compared to that during Sfi was SZ ± 12% during DP and 31 ±17% during VP: the CO was 17 ± 4% higher during DP than that during VP. In the four patients with spontaneous VA conduction (group III), the CO during DP was 35 ± 10% greater than that during VP, which did not result in an increase in the CO compared to that during SR in spile of an increase in HR from 52 ± 8 to 74 ± 2 beats/min. The study demonstrated that DP is the preferred temporary pacing mode and also that VA conduction during VP resulted in a mean decrease of 20% in CO compared to that during VP without VA conduction. The hemodynamic benefit from DP compared to SR seems to decrease when the left ventricular end-diastolic dimension increases. Furthermore, patients with large left ventricular end-systolic dimensions seem to have a lower increase in stroke index during DP as compared to that during VP than patients with smaller end-systolic dimensions.