Establishment of HPLC fingerprint and content determination of multiple index components in Xiao’er resuqing oral liquid / 中国药房

OBJECTIVE To establish an HPLC fingerprint of Xiao’er resuqing oral liquid， and to determine the contents of twelve index components. METHODS HPLC method was adopted. The determination was performed on Venusil MP C18 column with mobile phase consisting of acetonitrile-0.1% phosphate aqueous solution （gradient elution） at a flow rate of 1.0 mL/min. The detection wavelength was set at 210 nm， the column temperature was 30 ℃， the injection volume was 10 μL. HPLC fingerprint of Xiao’er resuqing oral liquid was established by using the Similarity Evaluation System of Chromatographic Fingerprint of TCM （2012 edition） to evaluate the similarity. The contents of 12 components were determined， including （R， S）-goitrin， 3，5-O-dicaffeoyl quinic acid， puerarin， forsythin， forsythoside A， chlorogenic acid， baicalin， saikosaponins d， wogonoside， baicalein， emodin and chrysophanol. RESULTS The similarity of HPLC fingerprints of 13 batches of Xiao’er resuqing oral liquid was greater than 0.97， and 14 common peaks were confirmed. The contents of the above 12 index components in 13 batches of Xiao’er resuqing oral liquid were as follows： 0.078-0.172， 1.564-2.736， 1.338-2.578， 0.426-0.872， 1.477-2.628， 1.396-2.447， 4.052-9.146， 0.367- 0.692， 1.974-4.674， 1.274-2.969， 0.085-0.167 and 0.155-0.307 mg/mL. CONCLUSIONS The established HPLC fingerprint and content determination methods have high accuracy and high specificity， which can be used for the quality evaluation of Xiao’er resuqing oral liquid.

Chinese medicine (Q-14) in the Treatment of Patients with Coronavirus Disease 2019 (COVID-19): A Single-center, Open label, Randomised Controlled Trial

OBJECTIVETo evaluate the efficacy and safety of Chinese medicine (Q-14) plus standard care compared with standard care alone in adult with coronavirus disease 2019 (COVID-19). Study DESIGNSingle-center, open label, randomised controlled trial. SETTINGWuhan Jinyintan Hospital, Wuhan, China, February 27 to March 27, 2020. PARTICIPANTS204 patients with laboratory confirmed COVID-19 were randomised in to treatment group and control group, which was 102 patients each group. INTERVENTIONSIn treatment group, Q-14 was administrated at 10g (granules), twice daily for 14 days and plus standard care. In control group, patients were given standard care alone for 14 days. MAIN OUTCOME MEASUREThe primary outcome was conversion time of SARS-CoV-2 viral assay. Adverse events were analyzed in the safety population. RESULTSAmong 204 patients, 195 were analyzed according to the intention to treat principle. There were 149 patients (71 vs. 78 in treatment group and control group respectively) turning to negative via SARS-CoV-2 viral assay. No statistically significance showed in conversion time between treatment group and control group (FAS: Median (IQR): 10.00 (9.00-11.00) vs. 10.00 (9.00-11.00); Mean rank: 67.92 vs. 81.44; P=0.051.). Time to recovery of fever was shorter in treatment group as compared in control group. The disappearance rate of symptom in cough, fatigue, chest discomfort was significantly higher in treatment group. In chest computed tomography (Chest CT) examinations, overall evaluation of chest CT examination after treatment compared with baseline showed more patients improved in treatment group .There were no significant differences in the other outcomes. CONCLUSIONAdministration of Q-14 on standard care for COVID-19 was useful for improvement of symptoms (such as fever, cough, fatigue and chest discomfort), while did not result in a significantly higher probability of negative conversion of SARS-CoV-2 viral assay. No serious adverse events were reported. TRIAL REGISTRATIONChiCTR2000030288

Overexpression of miR-130a-3p attenuates cardiomyocyte hypertrophy / 生物医学工程学杂志

This study aimed to explore the role of miR-130a-3p in cardiomyocyte hypertrophy and its underlying mechanisms. Pressure-overload induced myocardial hypertrophy mice model was constructed by thoracic aortic constriction (TAC). , norepinephrine (NE) was used to stimulate neonatal rat cardiomyocytes (NRCMs) and H9c2 rat cardiomyocytes to induce hypertrophic phenotypes. The expression of miR-130a-3p was detected in mice hypertrophic myocardium, hypertrophic NRCMs and H9c2 cells. The mimics and inhibitors of miR-130a-3p were transfected into H9c2 cells to observe the role of miR-130a-3p on the hypertrophic phenotype change of cardiomyocytes separately. Furthermore, whether miR-130a-3p regulated hypertrophic related signaling pathways was explored. The results showed that the expression of miR-130a-3p was significantly decreased in hypertrophic myocardium, hypertrophic NRCMs and H9c2 cells. After transfection of miR-130a-3p mimics, the expression of hypertrophic marker genes, atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP) and β-myosin heavy chain (β-MHC), and the cell surface area were notably down-regulated compared with the control group (mimics N.C. + NE group). But after transfection of miR-130a-3p inhibitor, the expression of ANP, BNP and β-MHC in H9c2 cells increased significantly, and the cell area increased further. By Western blot, it was found that the protein phosphorylation level of Akt and mTOR were down-regulated after over-expression of miR-130a-3p. These results suggest that miR-130a-3p mimics may alleviate the degree of cardiomyocyte hypertrophy, meanwhile its inhibitor can further aggravate cardiomyocyte hypertrophy. Over-expression of miR-130a-3p may attenuate cardiomyocytes hypertrophy by affecting the Akt pathway.

The characteristics of synovitis under energy Doppler ultrasonography in knee osteoarthritis patients / 中华风湿病学杂志

Objective To investigate the correlation between synovial inflammatory changes (synovial blood signals,synovial thickness,joint effusion) and cartilage injury,meniscus prominence of knee osteoarthritis (KOA) under energy Doppler ultrasound and further to assess the value of ultrasound for prognostic judgment in KOA.Methods A total of 291 KOA patients from our hospital from 2016 to 2018 were collected.The patients with rheumatoid arthritis (RA) with knee joints involved were recruited as control group.The data that conform to the normal distribution were expressed by mean±SD,and others were represented by M (P25,P75).The t test,the rank test and Chi-square test were used between the two groups,and ANOVA or K-W test was used to compare the data between the multiple groups,Spearman correlation analysis was used for correlation analysis.Results ① The proportion of synovial blood flow signal in KOA group was lower than RA group (19.6％ vs 47.7％,x2=286.2,P＜0.01),as well as the typical synovial thickness [2.6(0,3.95) mm vs 3.43 (1.85,6) mm,Z=-3.674,P＜0.01] and popliteal cyst (11.5％ vs 18.5％,x2=4.484,P=0.04).② In KOA group,no significant difference was found between ESR and hs-CRP among different synovial blood signals (H=7.213,H=0.883,all P＞0.05).ESR from KOA group were both significantly lower than controls but the synovial blood signals was the same except for power Doppler signal-2 group (Z=-8.414,Z=-4.991,t=-3.428,all P＜0.05);hs-CRP from KOA group were both significantly lower than controls but the synovial blood signals was the same.③ A total of 489 knee joints were detected in 291 patients with KOA,of which synovial blood flow signals were found in 96 joints,the power Doppler signal-I group was the most frequent in KOA (80/96,83.3％).In addition,joint effusion and synovial thickening were positively correlated with the synovial blood signals,(r=0.277,r=0.411,all P＜0.05).④ At last,the degrees of ultrasound blood flow signal in KOA group was positively associated with the WOMAC score,the Lequsne index and US-1 score (r=0.352,r=0.424,r=0.59,all P＜0.05).Conclusion Energy Doppler ultrasonography can be used to detect the KOA synovitis.Synovitis is not rare in KOA patients,and which is associated with disease activity.However,KOA and RA cannot be differentiated by energy Doppler ultrasonography.

Study on the diagnostic values of virtual touch tissue imaging quantification and virtual touch tissue quantification techniques in differentiating thyroid benign and malignant nodules / 中华医学超声杂志（电子版）

Objective To compare the diagnostic performances of two elastography techniques, virtual touch tissue imaging quantification (VTIQ) and virtual touch tissue quantification (VTQ), in differentiating between benign and malignant thyroid nodules. Methods A total of 182 patients with 186 nodules evaluated by VTQ and VTIQ were enrolled in this study. Shear wave velocities (SWV) of benign and malignant nodules were measured and compared between different groups by t test . The receiver operating characteristic curve (ROC) was used to assess the value of VTIQ and VTQ in differentiating benign and malignant nodules. And the sensitivity, specificity, accuracy, positive predictive value (PPV) and negative predictive value (NPV) of VTIQ and VTQ were calculated. According to areas under the curve (AUC), the diagnostic values of these two elastography techniques for thyroid nodules′ qualitative diagnosis were compared by Z test. Results In pathology, 104 thyroid nodules were benign and 82 were malignant. AUC of VTIQ SWV mean, VTIQ SWV median, VTQ SWV mean, VTQ SWV median were 0.848, 0.790, 0.759, 0.717, respectively. In the VTIQ and VTQ techniques, the SWV mean had higher diagnostic efficacy than the SWV median (VTIQ techniques: Z=2.104, P=0.0354; VTQ techniques: Z=2.190, P=0.0285). There were statistical differences in the diagnosis performance between VTIQ SWV mean and VTQ SWV mean (Z =2.115, P=0.0344). The VTIQ SWV mean value in the nodule had the best diagnostic value in comparison with other SWV values. The cut-off value of VTIQ SWV mean was 2.91 m/s. According to ROC curve analysis, the sensitivity, specificity, accuracy, PPV and NPV for VTIQ SWV mean were 72.12%, 87.80%, 79.03%, 88.24%, 71.29%, respectively. Conclusions The results demonstrated that VTQ and VTIQ have good diagnostic performance on distinguishing malignant from benign thyroid nodules. VTIQ SWV mean shows a better diagnostic performance than VTQ SWV mean.

Study on the Acute Eye Toxicity of PP1 Liposomes / 中国药师

Objective:To observe the acute toxic side effects of liposome PP 1 topically applied in eyes .Methods:PP1 liposomes (10, 60, 400 μmol· L-1 ) were used in one eye of SD rats , 4 times daily.The changes of conjunctiva , cornea and iris were observed under the slit-lamp biomicroscope , for three consecutive days , and evaluated by the stimulus score sheet of anterior segment .One week after the treatment , the corneas , irises and lenses were isolated , and their changes were observed under the light microscope .The ul-trastructural changes of corneal epithelial cells and endothelial cells were observed under the electron microscope .Results:There was a little of conjunctival secretion in one rat in the first day after the treatment with 400 μmol· L-1 PP1 liposomes, and the other rats were not irritant reaction .The corneal fluorescein staining of all rats were negative .The structures of cornea , iris, lens tissue were normal after given different concentrations of PP1 liposomes.Conclusion:PP1 liposomes at Low, medium and high concentrations show no a-cute eye toxicity in SD rats .

Effects of activation of Src-family tyrosine kinases on human LECs apoptosis and EMT under the high glucose environment / 中华实验眼科杂志

Background Diabetic cataract is one of the major ocular complications in diabetes mellitus,including cortical cataract,nuclear cataract,subcapsular cataract and mixed cataract,and different cataractogenesis may be associated with lens epithelial cells (LECs).Subcapsular cataract is one of diabetic cataracts.Studying the biological behavior of LECs in subcapsular cataract is crucial for prevention and treatment.Objective This study was to investigate the effects of Src-family tyrosine kinases (SFKs) on apoptosis and epithelial-mesenchymal transition (EMT) of human LECs cultured by high glucose.Methods Human LECs (HLE-B3) were cultured for 24 hours with DMEM containing 5.5 mmol/L glucose (normal control group),DMEM containing 35.5 mmol/L glucose (high glucose group) and DMEM containing 35.5 mmol/L glucose + 10 μmol/L PP1,a specific inhibitor of SFKs (PP1 group).In 3,6,12 and 24 hours after culture,the apoptosis of human LECs was detected by flow cytometry assay;morphological change of human LECs was observed under the inverted microscope,and the expressions of the markers of EMT,E-cadherin and a-smooth muscle actin (α-SMA),in the cells were detected by immnofluorescence staining.In addition,the alternations of p-Src418 (active c-Src),bcl-xl,survivin,caspase-3,E-cadherin and α-SMA proteins were assayed by Western blot analysis.Results An elevated expression level of p-Src418 was found in LECs in the high glucose group and peaked 6 hours after cultured.The expressions of p-Src418(grey levels) were 0.125 ±0.036 in the high glucose group,and which was significantly higher than 0.042±0.011 in the normal control group and 0.035 ± 0.018 in the PP1 group,respectively (both at P＜0.01).No remarkable differences were seen in the apoptotic rates between the high glucose group and normal control group in 6,12 and 24 hours after culture (all at P＞0.05).The apoptotic rates of human LECs were(6.433±2.084)％,(10.333±2.610)％ and (8.033±2.967)％ in the PP1 group,which were higher than (3.233 ± 1.320) ％,(3.533 ± 1.159) ％,(5.733 ±0.230) ％ in the high glucose group and (3.133±1.170)％,(2.833±0.751)％,(3.333±1.201)％ in the normal control group (all at P＜0.05),however,there were significant differences in the apoptosis between the high glucose group and the normal control group (all at P＞0.05).In 6 hours and 12 hours after cell culture,the expression levels of bcl-xl and survivin (grey values) in human LECs were significantly declined,but the expression of caspase-3 was increased in the PP1 group compared with the the high glucose group and the normal control group (all at P＜0.05).The LECs showed slender in shape 24 hours after culture in the high glucose group,but the cell shape was close to the normal in the PP1 group.Western blot and immunofluorescence assay revealed that the expression of E-cadherin in human LECs was significantly reduced and that of α-SMA was significantly increased 6 hours after culture in the high glucose group compared with the PP1 group and the normal control group (all at P＜0.05).Conclusions High glucose activates c-Src kinase of LECs in high glucose environment and therefore induces EMT and inhibits apoptosis.However,PP1 impedes the biological process of EMT and apoptosis of LECs to maintain the epithelial characteristics even under the stress of high glucose.

A case report: mixed thrombus formation in a previously sutured right atrium.

We describe the case of a 19-year-old Chinese woman who nine months prior underwent repair of an atrial septal defect and came to our hospital with a right atrial mass attached to the anterior wall of the right atrium on transthoracic echocardiography. Pathologic examination revealed the mass was a mixed-type thrombosis with some unusual organization, which previously was not described in literature.

Retrospective study of 21 sepsis in patients with systemic lupus erythematosus / 中华风湿病学杂志

ObjectiveTo investigate the clinical characteristics and predisposing factors of systemic lupus erythematosus(SLE) with sepsis.MethodsTwenty-one SLE patients with sepsis admitted to our hospital between 2005-2010 were reviewed in this study.The other 21 inpatients with active SLE in our hospital in the same period were randomly selected as controls.Clinical and laboratory documents of these patients were comparatively analyzed.Results The peak body temperature [ (39.4±0.6) vs (37.2±0.4) ℃,t=13.403,P=0.000],the hyperpyrexia (T≥39 ℃) incidence (71％ vs 5％,X2=19.788,P=0.000),the white blood cell (WBC) counts[(10.2±4.6) vs(6.2±2.5)×109/L,t=3.469,P=0.001)] and neutrophils in the peripheral blood [(8.3±4.5) vs(4.5±2.1)×109/L,t=3.559,P=0.001 ],the C-reactive protein(CRP) level [ (74±59) vs (5±4) mg/L,t=5.398,P=0.000 ] and lactate dehydrogenase (LDH) level[ (444±343) vs ( 225±144) U/L,t=5.398,P=0.000] in the sepsis group were significantly higher than those in the control group.It was noticeable that CRP in the sepsis group was 15 to 20 times higher than that in the control group.The level of serum albumin[ (29±9) vs(35±7) g/L,t=2.688,P=0.011 ],the maintenance dosage of hydroxychloroquine [(0.11±0.08) vs(0.17±0.09) g/d,t=2.331,P=0.025],the frequency of autoantibodies against SSA (38％ vs 71％,X2=4.709,P=0.03) or SSB(0 vs 43％,X2=11.455,P=0.001) in the sepsis group were significantly lower than those in the control group.Correlation analysis showed that,in the sepsis group,the SLE disease activity index (SLEDAI) had significant positive association with SLE duration (r=0.514,P=0.017),the WBC count (r=0.552,P=0.010) and neutrophils count(r=0.545,P=0.011 ),respectively.The neutrophil count correlated positively with the LDH(r=0.482,P=0.032) and CRP(r=0.606,P=0.022).These correlations were not statistically significant in the control group.ConclusionSepsis should be considered when SLE patients have hyperpyrexia,high levels of WBC and neutrophils,markedly elevated LDH and CRP level,especially when the CRP increases ten times higher than the normal limit.SLE activity and sepsis might affect each other,and this may be more evident in patients with longer disease duration.Hypoalbuminemia and negative autoantibody to SSA or SSB are likely to be the risk factors for SLE to develop sepsis while hydroxcyhloroquine may be protective against sepsis.

Research progresses on ergonomics assessment and measurement methods for push-pull behavior / 生物医学工程学杂志

Pushing and pulling (P&P) is a common operating mode of operator's physical works, and plays an important role in evaluation of human behavior health and operation performance. At present, there are many research methods of P&P, and this article is a state-of-art review of the classification of P&P research methods, the various impact factors in P&P program, technical details of internal/external P&P force measurement and evaluation, the limitation of current research methods and the future developments in the ergonomics field.