Mechanism of adrenocortical toxicity induced by quinocetone and its bidesoxy-quinocetone metabolite in porcine adrenocortical cells in vitro

Quinocetone (QCT) is a new feeding antibacterial agent in the QdNOs family. The mechanism of its adrenal toxicity is far from clear. This study was conducted to estimate the adrenal cell damage induced by QCT and its bidesoxy-quinocetone (B-QCT) metabolite and to further investigate their mechanisms. Following doses of QCT increasing from 5 to 50 μM, cell apoptosis and necrosis, mitochondrial dysfunction and redox imbalance were observed in porcine adrenocortical cells. The mRNA levels of the six components of intermediary enzymes and the adrenal renin-angiotensin-aldosterone system (RAAS) displayed a dysregulation induced by QCT, indicating that QCT might influence aldosterone secretion not only through the upstream of the production but also through the downstream of the adrenal RAAS pathway. In contrast, B-QCT had few toxic effects on the cell apoptosis, mitochondrial dysfunction and redox imbalance. Moreover, LCMS-IT-TOF analysis showed that no desoxy metabolites of QCT were found in either cell lysate or supernatant samples. In conclusion, we reported on the cytotoxicity in porcine adrenocortical cells exposed to QCT via oxidative stress, which raised awareness that its toxic effects resulted from N→O groups, and its toxic mechanism might involve the interference of the steroid hormone biosynthesis pathway.     

射频导管消融房室结改良术心电监测分析

为探讨射频导管消心室改良术所致心律失常的发生规律，分析射频导管消融房室结改良术２２例术中及术后２４ｈ的心电监测资料，并与预激旁道消融术２２例进行对比研究。     

回顾性分析糖尿病周围神经病变患者接受加味黄芪桂枝五物汤治疗的临床有效性

目的探究糖尿病周围神经病变患者治疗中加味黄芪桂枝五物汤的应用效果。方法共计抽取90例糖尿病周围神经病变患者作为研究对象,患者均于2018年3月~2019年3月入院进行治疗,按照入院顺序分两个小组,对照组使用常规西药治疗,研究组在西药治疗基础上增加加味黄芪桂枝五物汤,分组对比患者治疗效果以及神经传导速度改善效果。结果研究组患者治疗痊愈及好转率高于对照组,神经传导速度改善效果优于对照组,差异均有统计学意义(P<0.05)。结论糖尿病周围神经病变患者治疗中加味黄芪桂枝五物汤的应用能够有效改善患者临床症状,缓解患者神经功能异常情况,确保患者血糖水平的稳定,促进患者疾病的康复。     

湿润烧伤膏联合3M液体敷料治疗新生儿尿布皮炎的效果观察

目的:探讨湿润烧伤膏联合3M液体敷料治疗新生儿尿布皮炎的临床疗效。方法:对我院110例新生儿尿布皮炎患儿进行临床对照试验研究,使用硬币投掷法将患儿随机分为对照组(单独使用湿润烧伤膏)和试验组(湿润烧伤膏联用3M液体敷料),比较两组患儿治疗3 d时临床疗效、疼痛程度及不良反应。结果:试验组患儿创面愈合时间显著低于对照组患儿(P<0.05);试验组患儿疼痛程度2级、3级、4级人数少于对照组;两组患儿临床疗效比较,试验组治愈人数显著高于对照组(P<0.05);试验组患儿皮肤机械性损伤、继发过敏性皮炎的发生率显著低于对照组患儿(P<0.05)。结论:湿润烧伤膏联合3M液体敷料治疗新生儿尿布皮炎的临床疗效明显,可以显著改善患儿疼痛状况,减少临床不良事件发生率。     

改良加速康复外科方案在二级医院腹部微创手术患者围术期的实施与效果评价

目的 探讨个性化的改良加速康复外科（ERAS）方案在二级医院腹部微创手术患者围术期的实施方法与效果。方法 选择在二级医院行腹部微创手术的102例患者,分为观察组51例和对照组49例,对照组患者围术期采用传统的ERAS处理方案,观察组患者围术期采用个性化的改良ERAS处理方案,比较2组患者临床指标及术后并发症发生情况。结果 与对照组相比,观察组术后排气时间较早、术后24 h 疼痛视觉模拟评分较低、住院时间较短（P均< 0.05）。观察组恶心、呕吐、腹胀、肠梗阻及术后低体温等并发症的发生率均低于对照组（P均< 0.05）。结论 在二级医院运用个性化的改良ERAS方案,可减少腹部微创手术患者术后并发症的发生,促进患者早期康复,缩短住院时间。     

全关节镜下改良Broström术治疗慢性踝关节外侧不稳的临床疗效观察

目的 探讨全关节镜下改良Broström术治疗慢性踝关节外侧不稳的临床疗效。方法 回顾性研究。纳入2016年1月—2018年6月徐州市中心医院慢性踝关节外侧不稳患者33例(33侧),其中男20例、女13例,年龄16～55(30.3±5.7)岁;右侧22例,左侧11例。病程12~48(25.6±14.2)个月。受伤原因:扭伤28例,车祸伤5例。所有患者进行全关节镜下的改良Broström手术。术后定期随访,观察患者伤口愈合情况,并发症发生情况,观察踝关节活动情况,踝关节内翻应力试验、踝关节前抽屉试验检查踝关节稳定情况及步态。术后12个月采用疼痛视觉模拟评分法(VAS)评价踝关节疼痛情况,采用美国足踝外科协会(AOFAS)踝与后足评分和Karlsson 踝关节功能评分(KAFS)评价踝关节功能。对比患者手术前与术后12个月VAS、AOFAS、KAFS评分改善情况。结果 33例患者均顺利完成手术,手术时间35～80(50.3±12.6)min。术后患者切口均一期愈合,未出现伤口感染、神经损伤、血管损伤、肌腱损伤等并发症。33例患者均获得随访,随访时间12～40(25.0±10.7)个月。末次随访时,患者均无置入物排斥反应或线结反应;踝关节疼痛完全消失,关节活动度良好;踝关节内翻应力试验、踝关节前抽屉试验均阴性,未出现踝关节外侧不稳定,患者均恢复正常步态。术后12个月依据AOFAS评分标准,踝关节功能优27例、良6例;依据KAFS评分标准,踝关节功能优28例、良5例。术后12个月VAS评分由术前(6.02±1.93)分降低到(1.33±0.16)分,AOFAS评分由术前(61.75±13.08)分提高到(92.37±4.15)分,KAFS评分由术前(64.46±10.81)分提高到(93.19±5.58)分,差异均有统计学意义(t=12.765, -13.303, -12.346, P值均＜0.05)。结论 全关节镜下改良Broström术,手术创伤小,是一种治疗慢性踝关节外侧不稳的有效方法。     

Dental and skeletal effects after total arch distalization using modified C-palatal plate on hypo- and hyperdivergent Class II malocclusions in adolescents

ObjectivesTo compare the dental and skeletal treatment effects after total arch distalization using modified C-palatal plates (MCPPs) on adolescent patients with hypo- and hyperdivergent Class II malocclusion.Materials and MethodsThe study group included 40 patients with Class II malocclusion (18 boys and 22 girls, mean age = 12.2 ± 1.4 years) treated with MCPPs. Fixed orthodontic treatment started with the distalizing process in both groups. Participants were divided into hypo- or hyperdivergent groups based on their pretreatment Frankfort mandibular plane angle (FMA) ≤22° or ≥28°, respectively. Pre- and posttreatment lateral cephalograms were digitized, and 23 variables were measured and compared for both groups using paired and independent t-tests.ResultsThe hyper- and hypodivergent groups showed 2.7 mm and 4.3 mm of first molar crown distalizing movement, respectively (P < .001). The hypodivergent group had a slight 2.2° crown distal tipping of first molars compared with 0.3° in the hyperdivergent group. After distalization, the FMA increased 3.1° and 0.3°, in the hypodivergent and hyperdivergent groups, respectively (P < .001). SNA decreased in the hypodivergent group, while other skeletal variables presented no statistically significant differences in the changes between the groups.ConclusionsThe hypodivergent group showed more distal and tipping movement of the maxillary first molar and increased FMA than the hyperdivergent group. Therefore, clinicians must consider vertical facial types when distalizing molars using MCPPs in Class II nonextraction treatment.     

Effect of releasing quadratus lumborum muscle on hip and knee muscle length in asymptomatic individuals

BackgroundQuadratus lumborum muscle (QL) is one of several muscles subject to tightness and relevant to symptoms in the back and hip. Although releasing the tight QL seems to resolve these symptoms in clinic, no study has investigated the effects of such releasing on the length of the hip and knee muscles.ObjectiveTo compare muscle length of the hip and knee joints between pre- and post-releasing the QL.MethodsA quasi-experimental design (one-group pretest-posttest design) was conducted. Thirty asymptomatic participants with mean age of 20.40 years took part in the study. An examiner assessed the participants’ pelvic transverse gliding movement in standing and rotation of the upper trunk in supine to perceive the end feel of tissue resistance. The side with perceived more muscle tension was selected for receiving muscle release. Before manually releasing the QL, the participant was in the modified Thomas test position and pre-test range of motion (ROM) of hip flexion, hip abduction, and knee flexion angles was measured using a standard goniometer. After releasing the QL, the aforementioned angles were measured for post-test ROM.ResultsThe hip flexion angle was significantly reduced after releasing the QL (p < 0.05), whereas no statistically significant differences were found for the other 2 angles (p > 0.05).ConclusionThe length of iliopsoas muscle was increased after releasing the QL. The findings may be due to continuous fascial connection and similar attachment of the origins of these 2 muscles.Clinical trial registration numberNCT03016559.     

An unexpected case of Cardiobacterium valvarum prosthetic arthritis without cardiac lesions: Case report and literature review

We report a case of prosthetic arthritis caused by Cardiobacterium valvarum, which has been exclusively reported to cause intravascular infections. A 81-year-old Japanese female complained prosthetic knee joint pain. Arthrocentesis cultured no pathogen, and surgical replacement of the implant surface was performed. Modified Levinthal medium culture and 16S rRNA sequencing has finally led to diagnosis of C. valvarum prosthetic knee arthritis without cardiac lesions.Fastidious bacteria such as C. valvarum can be candidate pathogens of orthopedic infections whose causative agents are sometimes unidentified. Further development of molecular diagnostics is expected, but also the importance of conventional methods should be noted.     

莫匹罗星软膏有关物质测定方法的建立

目的 建立莫匹罗星软膏有关物质HPLC分析方法。方法 采用Agilent Zorbax C8(250mm×4.6mm, 5μm)色谱柱,柱温：30℃,流动相：以pH5.7乙酸铵溶液-四氢呋喃不同比例线性梯度洗脱,流速：0.8mL/min,检测波长：240nm,进样量：20μL。结果 莫匹罗星及莫匹罗星杂质C、D、E分别在25~100μg/mL浓度范围内线性关系良好;定量限分别为0.016、0.047、0.019及0.020μg;杂质C、D和E的平均回收率分别为103.7%、98.6%和93.9%;重复性RSD均小于1.0%;酸、碱、高温、氧化、光照强制降解试验证明方法的专属性良好。结论 所建立的方法专属性、准确性及耐用性均良好,可用于莫匹罗星软膏有关物质的检测。