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Objective:To develop a rapid, simple and cost-effective quantitative TaqMan RT-PCR (RT-qPCR) that could be used as an alternative to sequencing for the detection of Omicron variants and to evaluate its performance.Methods:Primers and TaqMan probes targeting the conserved domains of SARS-CoV-2 ORF1ab and the high-frequency mutation sites in the S gene of Omicron variants were designed. Then a RT-qPCR for the detection of Omicron variants was established. The consistency of the method was verified using samples identified by whole-genome sequencing. The specificity and sensitivity of the method were also evaluated.Results:The established RT-qPCR could distinguish Omicron variants from early epidemic A strains and Alpha and Delta variants of SARS-CoV-2, and the results were consistent with those of whole-genome sequencing with a coincidence rate of 100% (28/28). There was no cross-reactivity with other six respiratory viruses or coxsackievirus group A16. For RNA standards, this method showed good linearity in the range of 10 9-10 3 copies/μl with a correlation coefficient ( R2) greater than 0.99 and detection sensitivity of 10 3 copies/μl. Conclusions:The RT-qPCR designed in this study for Omicron variant detection had good sensitivity and specificity and could be easily performed in laboratories, which would greatly facilitate the monitoring of Omicron variants.
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Objective:To evaluate the effectiveness of the course of Laboratory Medicine and Clinical Sciences in the Laboratory Medicine Faculty of Sun Yat-sen University. Methods:Twenty-four undergraduate students in Batch 2016 of Medical Laboratory Faculty were divided into small groups (4-6 students per group). They learned each case in groups before class. In the first session of each class, the case-based study (CBS) tutor would randomly assign case-related questions to the students. Students were required to present their answers in class. The CBS tutor would guide the students to discuss the case further. In the second session, a lecture associated with the case would be given by a special subject lecturer. After the course, students, tutors and lecturers were given questionnaires and were randomly interviewed to comprehensively understand the course's effectiveness. SPSS 19.0 was used for statistics.Results:Most case discussion tutors agreed that they could guide students to discuss clinical cases well in class and give comments according to students' presentations (93.75%, 15/16). Most of the lecturers agreed that they could well guide students to think about the relationship between laboratory and clinical diagnosis and treatment in class (91.67%, 11/12). Both teachers and students had very positive evaluations of the learning mode, learning content, inspiration to students, and teachers' ability of this course. All the teachers and students agreed that the learning mode of combining CBS with special subject lecture was more helpful for the students to systematically learn medical knowledge compared with a CBS session alone or a lecture alone.Conclusion:The course, Laboratory Medicine and Clinical Sciences, which combines the CBS with the traditional lecture mode, integrates the advantages of the two learning modes. It not only stimulates students' enthusiasm for active learning, deepens clinical knowledge memory, and builds a clinical thinking model, but also enriches the teaching modes of medical laboratory education.
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Objective:To evaluate the effectiveness of inspiratory muscle training in middle-aged and elderly patients with obstructive sleep apnea(OSA).Methods:The randomized controlled trials (RCT) on the effect of inspiratory muscle training in middle-aged and elderly patients with OSA were collected using the databases of PubMed, Embase, Cochrane Library, Web of Science, Chinese National Knowledge Infrastructure, Chinese Biomedical Literature Database and Wanfang database, the time was from the construction of the database to December 2020. The literature quality was evaluated and data were extracted from the included literature. RevMan5.3 software was used to analyze the collected data.Results:A total of 8 RCTs were included. Meta-analysis showed that inspiratory muscle training could reduce apnea hypopnea index(AHI)( P<0.05), Epworth Sleepiness Scale(ESS)( P<0.01) and Pittsburgh Sleep Quality Index(PQSI)( P<0.01), but had no effect on lowest oxygen saturation ( P>0.05). Conclusions:Inspiratory muscle training is a safe and feasible training method that can decrease AHI, ESS and PSQI in middle-aged and elderly patients with OSA.
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Background@#Excessive delivery of free fatty acids (FFAs) to the liver promotes steatosis and insulin resistance (IR), with IR defined as reduced glucose uptake, glycogen synthesis and anti-lipolysis stimulated by normal insulin levels. Whether the associations between FFAs and diabetes development differ between patients with and without nonalcoholic fatty liver disease (NAFLD) remains unclear. @*Methods@#Consecutive subjects (2,220 NAFLD subjects and 1,790 non-NAFLD subjects according to ultrasound imaging) were enrolled from the First Affiliated Hospital of Sun Yat-sen University between 2009 and 2019. The homeostasis model assessment of insulin resistance (HOMA-IR) was calculated. @*Results@#There was an approximate J-shaped relationship between FFA levels and HOMA-IR in the NAFLD group. Higher FFA concentration quartiles were associated with higher risks of IR (odds ratio [OR], 9.24; 95% confidence interval [CI], 6.43 to 13.36), prediabetes (OR, 10.48; 95% CI, 5.66 to 19.39), and type 2 diabetes mellitus (T2DM; OR, 19.43; 95% CI, 12.75 to 29.81) in the NAFLD group but not in the non-NAFLD group. The cut-off points for the FFA levels increased in a stepwise manner in discriminating IR, prediabetes and T2DM (573, 697, and 715 μmol/L) in the NAFLD group but not in non-NAFLD individuals. @*Conclusion@#A distinct dose-dependent relationship of FFA levels was found with IR, prediabetes and T2DM in NAFLD patients. Screening serum FFA levels in NAFLD patients would be valuable in preventing diabetes development.
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Background@#Excessive delivery of free fatty acids (FFAs) to the liver promotes steatosis and insulin resistance (IR), with IR defined as reduced glucose uptake, glycogen synthesis and anti-lipolysis stimulated by normal insulin levels. Whether the associations between FFAs and diabetes development differ between patients with and without nonalcoholic fatty liver disease (NAFLD) remains unclear. @*Methods@#Consecutive subjects (2,220 NAFLD subjects and 1,790 non-NAFLD subjects according to ultrasound imaging) were enrolled from the First Affiliated Hospital of Sun Yat-sen University between 2009 and 2019. The homeostasis model assessment of insulin resistance (HOMA-IR) was calculated. @*Results@#There was an approximate J-shaped relationship between FFA levels and HOMA-IR in the NAFLD group. Higher FFA concentration quartiles were associated with higher risks of IR (odds ratio [OR], 9.24; 95% confidence interval [CI], 6.43 to 13.36), prediabetes (OR, 10.48; 95% CI, 5.66 to 19.39), and type 2 diabetes mellitus (T2DM; OR, 19.43; 95% CI, 12.75 to 29.81) in the NAFLD group but not in the non-NAFLD group. The cut-off points for the FFA levels increased in a stepwise manner in discriminating IR, prediabetes and T2DM (573, 697, and 715 μmol/L) in the NAFLD group but not in non-NAFLD individuals. @*Conclusion@#A distinct dose-dependent relationship of FFA levels was found with IR, prediabetes and T2DM in NAFLD patients. Screening serum FFA levels in NAFLD patients would be valuable in preventing diabetes development.
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Objective:To evaluate the effectiveness of expiratory muscle training in patients with chronic obstructive pulmonary disease.Methods:The randomized controlled trials (RCT) and controlled clinical trials (CCT) on the effect of expiratory muscle training in patients with chronic obstructive pulmonary disease were collected using the databases of PubMed, Embase, Cochrane Library, CNKI, CBM and Wanfang, time is from the construction of the database to November 2019. The literature quality was evaluated and data were extracted from the included literature. Data were analyzed with Revman5.3 software.Results:A total of 8 RCTs and 1 CCT were included. The Meta-analysis showed that Mean difference and its 95% confidence interval of P Imax, P Emax, FEV1, 6MWD and SGRQ score were 0.58 (-1.34, 2.51), 8.11 (-2.64, 18.86), -0.12 (-0.22, -0.01), -16.47(-40.76, 7.82), -1.52 (-3.75, 0.70) (all P>0.05, except for FEV1, P=0.03). Conclusions:In the pulmonary rehabilitation program of COPD patients, EMT combined with IMT does not achieve better results than IMT alone, it is recommended that we can only use IMT instead of EMT combined with IMT, and the same training effect will be achieved with less time and cost.
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Objective To observe the feasibility and safety of self-made extended endobronchial tube applicated in one-lung ventilation for radical resection of esophageal cancer.Methods 80 patients were randomly divided into two groups:self-made extended endobronchial tube group (group A) and double-lumen endobronchial tube group (group B).The degree of lung collapse,systolic blood pressure,diastolic blood pressure,heart rate,airway pressure (Paw),arterial partial pressure of oxygen(PaO2),arterial partial pressure of carbon dioxide(PaCO2),arterial oxygen saturation (SaO2) were monitored.The time for insertion,rate of successfully intubation for single time,incidence of postoperative hoarseness and sore throat were recorded.Results There were no significant differences in degree of lung collapse,systolic blood pressure,diastolic blood pressure and heart rate,SaO2 in the two groups(all P＞0.05).The comparison of the time for insertion between the two groups:(1.5±0.4)min vs.(2.6±0.8)min(t=4.78,P＜0.05);rates of successfully intubation for single time:95.0％ vs.80.0％(χ2=5.19,P＜0.05).The comparison of Paw between the two groups:T1:(17.3±1.1)cmH2O vs.(22.5±0.9)cmH2O,t=4.613,P＜0.05;T2:(17.9±0.5)cmH2O vs.(23.6±1.4)cmH2O(t=5.438,P＜0.05);T3:(18.1±0.8)cmH2O vs.(24.6±1.2)cmH2O(t=3.741,P＜0.05).The comparison of blood gas during one-lung ventilation between the two groups:PaO2(281.5±53.4)mmHg vs.(187.6±48.8)mmHg(t=5.28,P＜0.05);SaO2(98.1±6.3)％ vs.(94.5±5.7)％(t=3.46,P＜0.05);PaCO2(31.2±3.6)mmHg vs.(37.6±4.1)mmHg(t=6.32,P＜0.05).The comparison of incidence of postoperative hoarseness:1case vs.6cases(χ2=5.91,P＜0.05);The comparison of incidence of sore throat:4cases vs.13cases(χ2=6.13,P＜0.05).Conclusion Single-lung ventilation has achieved via either the double lumen tube or the self-made extended endobronchial tube.However,the self-made extended endobronchial tube is recommended for single-lung ventilation because of the advantages of its easy intubation and position,full oxygenation,low Paw,less incidence of postoperative hoarseness and sore throat.Self-made extended endobronchial tube can be used as a one-lung ventilation method in its indications.
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Objective To observe the role of the health education model in pain self- efficacy for patients with cancer pain. Methods Sixty- four patients suffering from cancer pain were enrolled into the study and self- contrast experiment was made on each patient. The health education model was set up and health education for each patient with cancer pain was implemented. The pain, self- efficacy, cancer pain knowledge before and after the intervention were observed by Numerical Rating Scale (NRS),Chronic Pain Self- efficacy Scale(CPSS) and Cancer Pain Knowledge Questionnaire. Results NRS score were (5.38 ±0.19) points and (1.05 ± 0.11) points before and after the intervention, and there was significant difference (t =25.288, P = 0.000). Before intervention, pain management self- efficacy, physical function self- efficacy, symptom coping self- efficacy of CPSS scores were (10.38 ±0.37) , (20.97±0.81) , (16.86 ± 0.49) points, while after the intervention, the scores were (19.31± 0.30) , (33.25 ± 0.60) , (29.75 ±0.51) points, there were significant differences ( t = -33.225, -18.236, -18.235, all P = 0.000). Before and after the intervention, the answer rate of Cancer Pain Knowledge Questionnaire was 50.00%(32/64) and 87.50%(56/64), there was significant difference( χ2=20.51, P < 0.01). Conclusions To set up the health education model and implement health education for each patient with cancer pain can improve the patient′s pain management and enhance self-efficacy.
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Objective To construct a mutant strain of Streptococcus pneumoniae ( S.pneumoniae) with ciaH gene-knockout (ΔciaH) and to analyze the correlation between the ciaH gene and the bacterial re-sistance against β-lactam antibiotics.Methods The ciaH gene segament of S.pneumoniae strain ATCC6306 was amplified by PCR.The PCR product was sequenced after T-A cloning.A suicide plasmid pEVP3ciaH was constructed for the deletion of ciaH gene and then transformed into the ATCC 6306 strain by using the CaCl2 method .The mutant strain of S.pneumonia strain ATCC6306 with ciaH gene-knockout (ΔciaH) was genera-ted through homologous recombination , insertion inactivation and amphemycin screening , which was further identified by PCR , sequencing analysis and laser confocal microscopy .Double agar dilution method was used to detect the minimal inhibitory concentrations ( MICs ) of penicillin G ( PCN ) and cefotaxime ( CTX ) against theΔciaH mutant strain and the wild type strain .The differences between the MICs were further ana-lyzed.The changes of ciaH gene expression at mRNA level after treatment with 1/4 MIC of PCN or CTX were detected by real-time fluorescent quantitative RT-PCR ( qRT-PCR ) .Results The ciaH gene in the genomic DNA of the generated ΔciaH mutant strain was inactivated by insertion as indicated by PCR and se-quencing analysis .Results of the immunofluorescence assay showed that the ΔciaH mutant strain did not ex-press the CiaH protein .The MICs of PCN and CTX against the ΔciaH mutant strain were 32 μg/ml and 64μg/ml, respectively, which were significantly higher than that of the wild type strain (0.06 μg/ml and 1μg/ml) (P<0.01).The expression of ciaH gene at mRNA level was significantly elevated after treatment S.pneumoniae ATCC6306 strain with 1/4 MIC PCN or CTX (P<0.01).Conclusion The CiaH protein in the CiaH/CiaR two-component signaling system is involved in the resistance of S.pneumoniae against β-lac-tam antibiotics.
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According to the three orientation cultivating mode,in order to improve quality of experiment teaching in pathogen biology and cultivate innovative talents of medicine the open experi-ment teaching which based on the research projects is applied to optimize the experiment content design, teaching form and comprehensive assessment. For example, In the choice of subject direction more attention are paid to the students' autonomy; In the design of experiment content students' inter-ests should be fully considered;During the course of experiments, the teachers play the role of visitors most of the time; In the experiment evaluation, students' ability of solving problems and their innova-tive ability are included. By participating in research projects, it not only can arouse the enthusiasm of students, but also can cultivate their scientific spirit of innovation and the rigorous scientific attitude.
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Objective To analyze the clinical significance and features of patient s' with inconsistent antineutrophil cytoplasmic antibodies (ANCA) test results between indirect immune fluorescence (IIF) and enzyme-linked immunosorbent assay (ELISA).Methods ANCA were detected with IIF and ELISA method jointly among 12 386 in-patients and a retrospective analysis on the proportion of clinical features and significance was made in 589 cases with inconsistent results using Microsoft Excel 2007 statistical software.Results Among the 589 patients,68 (11.5％) were diagnosed as vasculitis,in which 51 cases as ANCA-associated vasculitis,and 521(88.4％) were diagnosed as non-vasculitis including 181 connective disease and 340 non-connective diseases in which hypertension and cardiopathy were common.The common inconsistent results of ANCA were p-ANCA/ELISA (-),IIF (-)/anti-MPO (+),IIF (-)/anti-PR3 (+),IIF (-)/anti-PR3 (+) anti-MPO (+) accounted for 24.4％ (144/589),29.5％ (174/589),15.9％ (94/589),18.5％ (108/589) respectively,these accounted for 88.3％(520/589) of total inconsistency.Conclusion The spectrum of diseases and clinical characteristics varies widely and often presents with multiorgan involvement in patients with inconsistent ANCA results.These reasons make it easy to be misdiagnosed.Attention should be paid to identify and different these inconsistency.
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Objective To construct a prokaryotic expression system for expressing the phosphatase-encoding gene phpP in StkP/PhpP signaling couple in Streptococcus pneumonia ( S.pneumoniae) strains, and to further understand the phosphatase activity of the recombinant protein rPhpP.Methods The entire phpP gene of S.pneumoniae strain ATCC6306 was amplified by PCR.The PCR products were sequenced.A prokaryotic ex-pression system for expressing the phpP gene was constructed by the genetic engineering technique.The ex-pressed protein rPhpP and the solubility of rPhpP were assessed by SDS-PAGE and gel image analyzer.Ni-NTA affinity chromatography was performed to purify rPhpP.The changes of phpP gene transcription after the treat-ment with sublethal dosages of penicillin and cefotaxime were determined by real-time fluorescent quantitative RT-PCR.The functional domain in the sequence of the phpP gene and its type was analyzed by bioinformatic softwares.The activity of rPhpP in hydrolyzing the substrate of PP2C phosphotase was measured with Serine/Threonine Phosphotase Assay Kit.The enzyme kinetic parameters of rPhpP were calculated.Results The se-quence of the cloned phpP gene was identical with that reported in GenBank.The rPhpP in soluble form was ex-pressed in the constructed prokaryotic expression system.An increased expression of phpP gene at mRNA level was induced by sublethal dosage of penicillin or cefotaxime.The domain of PP2Cc type phosphatase was detec-ted in the sequence of phpP gene.The purified rPhpP protein could hydrolyze phosphopeptides [ RRA ( pT) VA], a substrate of PP2C type phosphatase, in a dose-dependent manner with Km and Kcat values of 277.35μmol/L and 0.71 S-1 ,respectively.Conclusion The protein encoded by phpP gene of S.pneumoniae was a PP2C type phosphatase.The expression of phpP gene could be enhanced by sublethal dosage of penicillin or ce-fotaxime.
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Objective To construct the conditionally replicative adenovirus vector pAd-Egr1-TRAIL-hTERT-E1A-E1Bp-E1B55K carrying early growth response gene-1 (Egr1)promoter and tumor necrosis factor related apoptosis inducing ligand (TRAIL)gene, and to observe the effects of the vector combined with 2 Gy irradiation on the TRAIL expression in MDA-MB-231 cells.Methods Egr-1 promotor sequence was cloned from pMD18 T-Egr1, TRAIL was constructed the downstream of Egr1 promoter, pShuttle-Egr1-TRAIL-hTERT-E1A-E1Bp-E1B55K (CRAd.pEgr1-TRAIL)was constructed,after the adenovirus vector was packaged successfully,MDA-MB-231 cells were infected with them and irradiated with X-rays.Real time PCR method and ELISA were used to detect the expression levels of TRAIL mRNA and protein, respectively. Six groups in the experiment were set up:control, 2 Gy,CRAd.p,CRAd.pEgr1-TRAIL,CRAd.p + 2 Gy and CRAd.pEgr1-TRAIL + 2 Gy. Results The recombinant adenovirus vector pAd-Egr1-TRAIL-hTERT-E1A-E1Bp-E1B55K was constructed and packaged successfully.The expression level of TRAIL mRNA in MDA-MB-231 cells transfected with the vector of 5 MOI for 24 h following 2.0 Gy X-rays irradiation began to increase and arrived to the top 8 h later in various groups,then declined.The expression level of TRAIL protein in MDA-MB-231 cells began to increase 6 h after irradiation and reached to the peak 24 h later,then declined 48 h later.There were significant differences in the expression levels of TRAIL protein between CRAd.pEgr1-TRAIL + 2.0 Gy and other groups at the same time point (P<0.01). Conclusion The recombinant adenovirus vector is obtained successfully, and the TRAIL mRNA and protein expression levels in MDA-MB-231 cells can be increased significantly by the vector combined with 2.0 Gy X-rays irradiation.
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Objective To investigate effects of different concentrations of dexmedetomidine on onset time and clinical time-effect of rocuronium in the processes of the total intravenous anesthesia.Methods Sixty patients with elective anesthesia breast modified radical mastectomy,aged 26 to 55 years,were randomly divided into four groups of 15 patients.Group A (control group):uniform within 10 min before induction of anesthesia saline infusion (NS ; 0.25 ml/kg) ; group B:dexmedetomidine given initial dose 0.3 μg/kg uniform within 10 min before induction of anesthesia infusion finished,anesthesia period 0.3 μg/(g · h) continuous infusion until the end of surgery; group C:dexmedetomidine given initial dose 0.6 μg/kg uniform within 10 min before anesthesia infusion finished,during anesthesia with continuous infusion 0.6 μg/'(kg · h) until the end of surgery ; and group D:dexmedetomidine given initial dose 1 μg/kg uniform within 10 min before anesthesia infusion finished,during anesthesia to 1 μg/(kg · h) continuous infusion to the end of surgery.Patients after the burglary were under multi-monitor vital signs monitoring blood pressure (BP),heart rate (HR),oxygen saturation (SPO2),electrocardiogram (ECG),and after intubation monitoring end-tidal carbon dioxide (EtCO2),recording time T0 and T25.Results No significant difference was found at the T0 time in each group.However,the T25 time (48 ± 6) min in group C and (51 ±6) min in group D was significant longer than that (40 ±6)min in group A (P ＜0.05).The mean artery pressure(MAP) of group C and D [(88.76 ± 7.06)mmHg,(87.89 ± 6.95)mmHg] were significantly lower than group A after dexmedetomidine infusion 5 min later(P ＜ 0.05); The HR of groups B and C [(60.80 ± 7.11)bpm,(63.31 ± 5.78)bpm] were significantly lower than group A before induction (P ＜ 0.05).The HR of group D was significantly lower than group A before induction and after infusion 5 and 30 min later[(66.40 ± 9.49) bpm,(60.52 ± 7.45) bpm,(61.32 ± 7.11) bpm,P ＜ 0.05].Conclusions Under the status of total intravenous anesthesia,different concentrations of dexmedetomidine did not affect the onset time of rocuronium,but dexmedetomidine given up to a certain concentration could enhance the clinical time-effect of rocuronium.
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Objective To explore the effect of dexmedetomidine on hemodynamics in hypertensive patients undergoing thyroid surgery with local anesthesia.Methods Sixty patients with preoperatively diagnosed class Ⅰ to Ⅱ hypertension undergoing selective thyroidectomy were randomly divided into D (dexmedetomidine) and M (midazolam) groups (30 patients in each group).Doses of dexmedetomidine 0.5 μg/kg were finished in 20 minutes injection in patients of D group before the start of the surgery,then sequentially maintained at the rate of 0.1 ～ 0.5 μg/ (kg · h) with decreasing speed of 0.1 μg/(kg · h) when systolic pressure kept down to 110 mmHg or heart rare down to 60 bpm or Ramsay score of 3 points.The patients in M group were injected with midazolam 0.04 mg/kg 20 minutes before the start of surgery,then maintained at the rate of 0.02 ～ 0.05 mg/(kg · h),decreasing speed of 0.1 mg/(kg · h) to keep Ramsay score of 3 points if necessary.Two groups of patients with Ramsay score of 3 points but a high blood pressure (higher than 30％ of basic level) or heart rate (more than 100 bpm) were treated with drugs during operation.Record the systolic pressure,diastolic pressure,heart rate and Ramsay score at the time of before medication (T0),the injection of local anesthetics (T1),the start of surgery (T2),pain compliments required additional local anesthetics (T3),dealing with gland (T4) and the end of surgery,VAS in 8 h after operation and adverse reaction were recorded.Results In D group,the dosages of urapidil and esmolol [(10 ±5)mg and (0 ±0)mg] were significantly less than those in patients of M group [(60 ± 10) mg and (80 ±5) mg,t =14.82,t =19.78,P ＜ 0.05].Blood pressure and heart rate were all significantly decreased at the time of T1,T2 and T5 when comparing with T0(P ＜0.05 orP ＜0.01),and only heart rate was significantly decreased at the time of T3 and T4 (P ＜ 0.05).While in M group,blood pressure and heart rate were higher than basic levels at the time of T3 and T4 (P ＜ 0.05).Besides,lower blood pressure and heart rate were less than those in M group at all observed time expect T0 (P ＜ 0.05).Conclusions Good sedation effects can be produced by both dexmedetomidine and midazolam in hypertensive patients undergoing thyroid surgery with local anesthesia,but dexmedetomidine was determined more suitable in sedation and anti-hypertension in patients with light to moderate hypertension for better hemodynamic stability effect with local anesthesia.
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Objective To investigate the postoperative analgesia efficacy of ultrasound-guided rectus abdominis sheath block (RSB) in patients with abdomen panhysterectomy.Methods Forty patients with abdomen panhysterectomy under general anesthesia were divided into RSB group and control group by random digits table method with 20 cases each.All the patients were given patient controlled intravenous analgesia.The visual analogue scale (VAS) score and Ramsay sedative score at 2,6,12 and 24 h after operation,sulfentanyl dosage and total number of analgesic pump press of 24 h,number of nausea and vomiting,analgesic satisfaction score were recorded.Results The VAS scores in RSB group at 2,6,12,24 h after operation were lower than those in control group,but there were no statistical differences (P＞ 0.05).The Ramsay sedative score of all patients was ＜ 4 scores.Sulfentanyl dosage of 24 h in RSB group was (73.1 ± 8.6) μ g,in control group was (91.7 ± 12.3) μ g,there was statistical difference (P ＜ 0.01).The number of analgesic pump press of 24 in RSB group was (6.5 ± 2.1) times,in control group was (12.3 ± 4.6)times,there was statistical difference (P ＜ 0.01).Analgesic satisfaction score in RSB group was (7.3 ± 0.7)scores,in control group was (6.8 ± 1.1) scores,there was statistical difference (P＜ 0.05).Four cases in RSB happened nausea and vomiting,3 cases in control group,there was no statistical difference (P ＞ 0.05).All patients did not happen the complication related with RSB operation.Conclusion RSB as the postoperative analgesia in patients with abdomen panhysterectomy can reduce the dosage of opioid drug,and increases the analgesic satisfaction.
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ObjectiveTo assess the value of quantitative tissue velocity imaging (QTVI) in monitoring the establishment of levothyroxine-induced cardiomyopathy models on rabbits.MethodsThirty New Zealand purebred rabbits were divided into experimental group (n=20) and control group (n= 10).Hyperthyroidism models were established by peritoneal injection of levothyroxine (L-Thy) in experimental group (45 μg/ [kg · d]).The same dose of saline was given to rabbits in control group for 4 weeks.QTVI and conventional echocardiographic parameters were obtained at the beginning day and 1,2,4 weeks in two groups.According to the changes of ultrasound parameters,the rabbits of experimental group were divided into two subgroups:Concentric hypertrophy (CH) subgroup and eccentric hypertrophy (EH) subgroup.ResultsAt the first week,left ventricular ejection fraction (LVEF),fractional shortening (LVFS),mitral inflow peak velocity (E),average mitral annularsystolic peak velocity (Vs) and acceleration (a) increased obviously than before injection in experimental group (P＜0.01).At the second week,posterior wall thickness at end diastole (PWTd),interventricular septal thickness at end diastole (IVSTd) and left ventricular mass index (LVMI) increased obviously than before injection in experimental group and control group (P＜0.05),and the average mitral annular early diastolic velocity (Ve) was significantly lower (P＜0.01).Compared with control group,the average Ve was significantly lower in CH subgroup (P＜0.01),while LVEF,LVFS,average Vs,a and average Ve were significantly lower in EH subgroup (P＜0.01).ConclusionQTVI is valuable in the assessment of establishing levothyroxine-induced cardiomyopathy models on rabbits.
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To establish a set of perfect teaching quality management system in laboratory medicine based on ISO 9000 standard and teaching reality in laboratory medicine will be helpful to the improvement of teaching quality and management ability and sustainable development of laboratory medicine.
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Objective To observe the effect of the volatile oil of zanthoxylum bungeanum in killing demodex in vitro.Method The mites were collected with adhesive cellophane tape technique.The killing effect of the pure volatile oil with different concentrations volatile oils on human demodex was investigated by microscope.Results The pure volatile oil was highly powerful in killing D.f and D.b in vitro,and for the D.b,the killing effect was better.With the increase of dilutus multiple,the killing effect dareased.Conclusion The pure volatile oil of zanthoxylum bungeanum is an effective component in killing demodex in vitro.
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Objective: To probe the effects of gross polysaccharide of Radix Rehmanniae Preparata(GPRRP) on the morphology changes of immune organ of blood deficiency model mice.Methods: Using the blood deficiency mice models induced by releasing blood and injection of Cyclophosphamide as the experimental objects,the model animals were divided into 5 groups,that was the large,middle and small dose of GPRRP groups,Danggui Buxue Oral Liquid group,model group,at the same time,giving a blank control group.It was given successively relating drugs to the animals of several groups for 10 days.At the end of the experiment,the hemogram was measured and the thymus and spleen were taken,and making pathological section,then these tissues morphology changes were observed under microscope.Results: GPRRP can obviously resist the atrophy of thymus and spleen induced by the model establishing,can obviously increase the depth of thymus cortex and the number of cortex cells,can enlarge the size of spleen nodules and obviously increase the number of lymphocyte.Conclusion: GPRRP can resist the atrophy of thymus and spleen in blood deficiency model mice.
