初三学生成就动机与学业成绩的关系研究

编制中学生成就动机量表 ,考察 2 86名初三学生的成就动机状况。运用逐步回归分析探讨成就目标、归因方式、自我效能与学业成绩的关系 ,并对成就目标进行自我效能和归因方式的回归分析。结果表明 :影响初三学生学业成绩的主要成就动机因素是自我效能、表现目标、能力归因和掌握目标 ,努力归因、运气归因和自我效能是影响初三学生成就目标的主要因素 ,客观因素归因也会影响表现目标。对研究结果进行本土化思考 ,建构中学生成就动机的理想模型     

解剖钢板结合连续被动运动功能锻炼治疗胫骨平台骨折

目的 评价解剖钢板结合连续被动运动(CPM)功能锻炼在治疗胫骨平台骨折中的应用价值.方法 2003年5月至2005年10月本院34例胫骨平台骨折行解剖复位、解剖钢板内固定并在术后进行CPM功能锻炼.结果 术后对患者行X线检查示骨折实现解剖复位或接近解剖复位.23例患者经5～30个月随访骨折均愈合,无植骨坏死发生.CPM功能锻炼后运动功能恢复优良率为82.6%(19/23).结论 采用关节面的解剖复位、解剖钢板及牢固固定后配合术后CPM功能锻炼对于胫骨平台骨折有很好的疗效.     

3D-printed prostheses for large bone defect reconstruction following bone tumor surgery北大核心

BACKGROUND: Tumor segment resection is one of the standard methods for the treatment of bone tumors. However, the reconstruction of bone defects atumor resection faces many challenges. A growing number of researchers are focusing on 3D-printed prostheses for bone defect repair and reconstruction following bone tumor surgery. OBJECTIVE: To explore the feasibility of 3D-printed prostheses in the reconstruction of large bone defect following bone tumor surgery and to evaluate the postoperative outcomes. METHODS: Retrospective analysis of clinical data of 24 patients [19 males and 5 females, age 23.8 (6-61) years] who underwent bone tumor resection and 3D-printed prosthesis implantation in the Department of Bone Oncology, the First Affiliated Hospital of Xinjiang Medical University from December 2020 to September 2021 was conducted. There were 7 cases with distal femur tumor, 5 with pelvis tumor, 4 with proximal tibia tumor, 3 with middle femur tumor, 1 with distal tibia tumor, 1 with proximal humerus tumor, 1 with middle humerus tumor, 1 with scapula tumor, 1 with ulna tumor, and 22 cases with primary tumors (13 osteosarcoma, 4 Ewing sarcoma, 2 giant cell tumor of bone, 1 chondroblastoma, 1 chondrosarcoma, and 1 osteoblastoma), 2 metastatic carcinoma. Preoperative and postoperative imaging data were recorded and neoadjuvant chemotherapy was administered in 17 cases before surgery. The Musculoskeletal Tumour Society score was used to assess limb function before surgery and 6 months after surgery, and pain was assessed by the Visual Analog Scale, as well as the complications were recorded. RESULTS AND CONCLUSION: (1) All patients undergoing resection of the tumor segment and 3D-printed prosthesis implantation for the reconstruction of the bone defect were followed for 6-49 months, and the results showed that the length of osteotomy was (18.2 ± 7.3) cm and an average intraoperative bleeding volume was 740 (100-3 000) mL. (2) Two patients died of systemic metastasis, the remaining 22 had no pulmonary metastasis or recurrence during the follow-up period, and 1 patient developed aseptic loosening of the prosthesis at 25 months postoperatively. (3) The Musculoskeletal Tumour Society scores were significantly increased, while Visual Analog Scale scores were significantly decreased (P < 0.05) at 6 months postoperatively. (4) The Musculoskeletal Tumor Society score was rated excellent in all 22 patients at the final follow-up. (5) These results suggest that 3D-printed prosthesis is suitable for the reconstruction of large bone defects caused by bone tumor resection. Patients have good postoperative function and few complications. However, further investigations are needed to explore long-term follow-up results. © 2023, Publishing House of Chinese Journal of Tissue Engineering Research. All rights reserved.     

解剖钢板结合连续被动运动功能锻炼治疗胫骨平台骨折

目的 评价解剖钢板结合连续被动运动(CPM)功能锻炼在治疗胫骨平台骨折中的应用价值.方法 2003年5月至2005年10月本院34例胫骨平台骨折行解剖复位、解剖钢板内固定并在术后进行CPM功能锻炼.结果 术后对患者行X线检查示骨折实现解剖复位或接近解剖复位.23例患者经5～30个月随访骨折均愈合,无植骨坏死发生.CPM功能锻炼后运动功能恢复优良率为82.6%(19/23).结论 采用关节面的解剖复位、解剖钢板及牢固固定后配合术后CPM功能锻炼对于胫骨平台骨折有很好的疗效.     

Mechanisms of compensation for vestibular deficits in the frog

Summary In hemilabyrinthectomized frogs excitatory responses of central vestibular neurons to electrical stimulation of the remaining vestibular nerve were recorded extra- and intracellularly at different stages (0, 3, and 60 days) after the operation.The output pattern of ipsilateral vestibular neurons sending an axon across the midline via the vestibular commissure to the deafferented nucleus did not change postoperatively.The synaptic efficacy of these commissural axons ending on partially deafferented vestibular neurons on the lesioned side increased with time. This enhanced synaptic potency was associated with a shortening in time to peak and duration and an increase in amplitude of the evoked EPSPs. As a result most vestibular neurons were readily excited by single shock stimulation of the contralateral vestibular nerve, a finding which was rarely observed in control animals.These plastic changes are explained by the assumption of reactive synaptogenesis. The consequences of this modification for the readjustment of static and dynamic vestibular reflexes are discussed.     

A comparison of labetalol and prazosin combined with atenolol in non-responders to atenolol plus hydrochlorothiazide in uncomplicated hypertension

Summary After screening two local populations in the northern part of The Netherlands for hypertension, patients with a diastolic pressure (DP) between 95 and 120 mmHg were treated daily either with 50 mg hydrochlorothiazide or 100 mg atenolol. Non-responders were given the combination and if necessary the dose of atenolol was increased to 200 mg. Non-responders to the latter combination were randomized and treated either with 50 mg hydrochlorothiazide and labetalol or with 50 mg hydrochlorothiazide, 200 mg atenolol and prazosin. If after 1 month a DP90 mmHg had been reached the patient was reassessed after a further 3 months. If a DP>90 mmHg was found the dose of labetalol or prazosin was increased and the patient was re-examined after 1 month.This protocol was followed until the maximum dose was reached or adverse reactions prevented a further increase in dosage.During 6 months of treatment there was a further drop in systolic and diastolic blood pressures under both regimens of, respectively, 8.6 and 2.4 mmHg for labetalol, and 7.7 and 5.0 mmHg for the prazosin group. At the end of the period the average daily doses of labetalol and prazosin were 1256 mg and 4.3 mg, respectively. There was no significant difference in the average number of complaints between the labetalol and the prazosin group.     

Antitumor effect of i.p. dopamine in mice bearing Ehrlich ascites carcinoma

Summary The cancer chemotherapeutic efficacy of dopamine (DA) was evaluated in female strain A mice bearing transplantable Ehrlich ascites carcinoma. The results demonstrated significant inhibition of tumor growth with appreciable increase in the host survival time following DA treatment. Diminished activity of the growth-related respiratory enzyme succinate dehydrogenase along with stimulated activity of the lysosomal enzyme, -glucuronidase in DA-treated tumor cells indicated inhibition of tumor growth as well as active lysis of the tumor cells. The direct effect of this compound on tumor proliferation was demonstrated by marked inhibition of DNA synthesis. RNA synthesis was only marginally inhibited.Abbreviations DA Dopamine - EAC Ehrlich ascites carcinoma - SDH Succinate dehydrogenase - -Glu -glueuronidase - ILS Increase of life span     

Comparison of a traditional paracetamol medication and a new paracetamol/paracetamol-methionine ester combination

Summary The SUR 2647 combination is a sachet formulation containing free paracetamol and its N-acetyl-methionate ester (SUR 2647). In a randomized, single-blind, between-patient study the onset of analgesia, duration and efficacy of the SUR 2647 combination vs paracetamol was investigated in outpatients after oral surgery. One group (n=27) received sachets of SUR 2647 combination 2 b.i.d. (equivalent to 2 g paracetamol ×2) on the day of operation, and one sachet b.i.d. (equivalent to 1 g paracetamol ×2) for the following two days. The other group (n=26) received paracetamol tablets 2 q.i.d. on the day of operation (1 g×4) and one tablet q.i.d. (0.5 g×4) for the following two days. Several objective and subjective assessments, including pain score on a visual analogue scale, were recorded for comparison of the postoperative courses. Median onset of analgesia for both groups was 0.5 h. The duration after SUR 2647 combination was 5.5 h as compared to 2.5 h for paracetamol. Mean pain scores showed that the SUR 2647 combination regime reduced pain significantly more than the paracetamol regime from 0.5 to 3.0 h after initiation of medication. The mean pain scores did not show a significant difference during the remaining observation period. Mild to moderate drowsiness was reported in both treatment groups, but it was more common in subjects given SUR 2647 combination.     

补肾活血汤与定坤丹序贯治疗多囊卵巢综合征的临床效果

目的 探讨补肾活血汤与定坤丹序贯治疗多囊卵巢综合征的效果及性激素水平变化。方法 选取2018年12月—2020年2月本院多囊卵巢综合征患者78例,按随机数字表法分为研究组、对照组,各39例,对照组予以炔雌醇环丙孕酮片进行治疗,研究组予以补肾活血汤与定坤丹进行序贯治疗。对比2组疗效、排卵情况及治疗前后性激素水平[黄体生成激素(LH)、卵泡刺激素(FSH)、睾酮(T)]、最大卵泡直径变化,采用t检验和χ2检验等。结果 研究组治疗总有效率为97.44%,高于对照组的79.49%(P=0.029)。治疗后,研究组LH为(7.26±2.08)mIU/L、T为(1.87±0.59)nmol/L,低于对照组的(9.59±2.26)mIU/L、(2.29±0.48)nmol/L(t=4.737、3.449,P<0.001),FSH为(5.87±2.74)IU/L,高于对照组的(4.80±1.86)IU/L(t=2.018,P=0.047)。治疗后,研究组最大卵泡直径(20.66±4.13)mm,长于对照组的(15.62±3.35)mm(t=5.919,P<0.001);研究组排卵率为71.79%,高于对照组的48.72%(χ2=4.336,P=0.037)。结论 补肾活血汤与定坤丹序贯治疗多囊卵巢综合征,可提高疗效,改善性激素分泌情况,促进卵泡发育,提高排卵率。     

整合“转录组-基因调控网络”探讨白虎加桂枝汤君药石膏的性-效关联内涵

目的 从“性-效”关联角度,采用“转录组-基因调控网络”整合研究策略,系统评价白虎加桂枝汤君药石膏在全方“热者寒之”药效作用中的贡献度和贡献形式。方法 20只雄性Lewis大鼠随机分为4组,每组5只：正常组、佐剂诱导型关节炎（AIA）热证模型组、AIA热证+白虎加桂枝汤组（BHGZT,21.4 g·kg^-1）、AIA热证+白虎加桂枝汤去石膏拆方组（BHGZT-GYP,10.7 g·kg^-1）。利用热痹经典动物模型-AIA热证大鼠来源的转录组表达谱数据,通过“病证基因-药物效应靶标”相互作用网络挖掘,预测石膏在白虎加桂枝汤干预热痹的主要作用环节。基于AIA热证大鼠模型从受累关节情况、关节临床积分、肿胀度、关节表面温度、疼痛阈值、关节损伤等疾病严重指标和病证结合指标情况,以及体内“免疫-炎症”失衡调节层面进行整体验证,并基于体外3T3-L1前脂肪细胞开展体外成脂实验验证。结果 白虎加桂枝汤君药石膏在干预热痹中的主要作用环节是调节机体能量代谢的紊乱和矫正“免疫-炎症”的失衡。动物实验观察可见,白虎加桂枝汤及其去石膏拆方均可显著缓解AIA热证大鼠受累关节红肿、畸变和疼痛等症状（P<0.01）,并抑制受累膝/踝关节损伤、滑膜炎症、骨破坏等病理改变（P<0.05）,且全方作用明显优于去石膏拆方（P<0.05）。机制研究表明,白虎加桂枝汤及其去石膏拆方可显著抑制AIA热证大鼠的胸腺/脾脏损伤和内脏指数（P<0.05）,并降低TLR4、TNF-α、IL-6、IL-1β及IL-18等炎症因子的表达（P<0.05）。体外3T3-L1前脂肪细胞实验表明,与去石膏拆方组相比,白虎加桂枝汤全方能够更加显著地抑制脂肪细胞成脂,且单纯石膏对脂滴含量的抑制作用显著增强,表明石膏在全方抑制成脂中的重要作用。结论 白虎加桂枝汤君药石膏在全方缓解热痹相关的能量代谢紊乱和矫正“免疫-炎症”失衡中发挥着重要作用,这与其寒药性及其清热泻火的作用特点密切相关。