Purpose To explore the clinical value of color Doppler ultrasound in monitoring hemodynamic changes in main renal artery of neonatal asphyxia. Materials and Methods A total of 60 cases of neonatal asphyxia were divided into mild asphyxia (38 cases) and severe asphyxia (22 cases) according to Apgar score 1 min after born. Then the peak systolic velocity (Vs), the end diastolic velocity (Vd) and the resistance index (RI) of the main renal artery were obtained by color Doppler ultrasound on day 1 and day 3;the level of endothelin-1 (ET-1) was also recorded accordingly. The above results were compared with those of 20 cases of healthy full-term new born infants. Results On day 1, Vs and Vd of the main renal artery in the groups with mild asphyxia and severe asphyxia were both lower than those in healthy group (P<0.05), but RI was higher (P<0.05), with more dramatic changes in the group with severe asphyxia (P<0.05). On day 3, Vs and Vd in the groups with mild asphyxia and severe asphyxia reduced compared with those on day 1, whilst RI was higher than that on day 1. Vd and RI in the group with severe asphyxia changed more significantly (P<0.01). As to the value of ET-1, both groups with mild asphyxia and severe asphyxia showed higher level than healthy group (P<0.01). More dramatic increase appeared in the group with severe asphyxia (P<0.05). In the groups with mild asphyxia and severe asphyxia, the Vs and Vd of the main renal artery were negatively correlated with ET-1 on day 1 and day 3 (r=-0.823,-0.845;P<0.01), while the RI was positively correlated with ET-1 (r=0.785, P<0.01). Conclusion Both color Doppler ultrasound imaging and neonatal urine ET-1 test can reflect degree of renal injury after neonatal asphyxia dynamically and noninvasively, which can be used to evaluate the injury severity.

This study is to establish the HPLC fingerprint and determine eight components of Callicarpa nudiflora, and provide a scientific basis for the identification and quality control. The Waters sunfire C18 column (4.6 mm x 250 mm, 5 µm) was used and the detection wavelength was 330 nm . The column temperature was 30 °C. The mobile phases were acetonitrile (A) and 0.1% formic acid (B) eluting in a gradient program at a flow rate of 1.0 mL · min(-1). The chromatographic fingerprint similarity evaluation system for tradition Chinese medicine(2012) was used for analysis. C. nudiflora from different samples were of high similarity in fingerprint and the separation of ten components was good. There was an obvious difference between other samples and C. nudiflora leaves. In quantitative analysis, the ten components showed good regression(R2 > 0 999 0) with linear ranges, and their recoveries were in the range of 96.0%-105.0%. The established qualitative and quantitative methods are highly specific, simple and accurate, which can be used for the identification and quality control of C. nudiflora.
Callicarpa ; chemistry ; Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; analysis ; isolation & purification ; Plants, Medicinal ; chemistry

OBJECTIVE: To evaluate the application of MSCT and post-processing images to fractures of nasal bone in forensic identification. METHODS: 134 cases were examined by thin slice scanning with MSCT and all of the data were sent to workstation for MPR and SSD. The result of MSCT was compared with that of X-ray. RESULTS: There are 55 (41.04%) cases of linear fracture, 46 (34.33%) cases of comminuted fracture, 27 (20.15%) cases of depressed fracture and 6 (4.48%) cases of no fracture in this sample. With X-ray or CR, 48 (35.82%) cases were misdiagnosed or underdiagnosed. 133 (99.25%) cases were confirmed by MSCT. Significance difference was found between X-ray and MSCT (chi2= 45.0816, P<0.001). CONCLUSION MSCT and post-processing images might be the chief evidence for nasal fractures in forensic identification.
Adolescent ; Adult ; Chromatography, Thin Layer ; Female ; Forensic Medicine/methods* ; Fractures, Comminuted/diagnostic imaging* ; Humans ; Imaging, Three-Dimensional ; Male ; Middle Aged ; Nasal Bone/injuries* ; Skull Fractures/diagnostic imaging* ; Tomography, Spiral Computed/methods* ; Young Adult

Objective:To retrospectively analyze the clinical characteristics and drug resistance among COVID-19 patients with bacterial and fungal infections.Methods:Clinical data of COVID-19 patients whose blood, urine, sputum and alveolar lavage fluid samples were positive for bacteria and fungi were collected in Tongji Hospital from February 10 to March 31, 2020. WHONET5.6 software was used to analyze drug susceptibility test results.Results:A total of 95 COVID-19 patients positive for pathogenic bacteria were enrolled and among them, 23 were non-critical patients and 72 were critical patients. The main symptoms in these patients included fever, cough with sputum, fatigue and dyspnea. Male and female critical patients accounted for 63.89% and 36.11%, respectively. Most of the patients with bacterial and fungal infections were critical type, accounting for 23.61%. The mortality rates of non-critical and critical patients were 13.04% and 61.11%, respectively. A total of 179 strains of pathogenic bacteria were isolated. The positive rate of Escherichia coli in non-critical patients was 37.50%, which was higher than that in critical patients. However, the positive rates of Acinetobacter baumannii and Klebsiella pneumoniae in critical patients were both 29.87%, higher than those in non-critical patients. There was no significant difference in the positive rate of gram-positive bacteria or fungi between non-critical and critical patients. It was noteworthy that the positive rate of Candida parapsilosis in blood samples of critical patients was relatively high, reaching 36.40%. Drug susceptibility test results showed that no carbapenem-resistant Escherichia coli stains were detected and 60.87% of Klebsiella pneumoniae strains were resistant to carbapenems. Acinetobacter baumannii strains were 100% resistant to three antimicrobial drugs. Methicillin-resistant Staphylococcus aureus strains accounted for 71.43%, but no vancomycin-resistant gram-positive cocci were found. Conclusions:Critical COVID-19 patients were mostly male and prone to multiple bacterial and fungal infections. The mortality of critical patients was higher than that of non-critical patients. Critical COVID-19 was often complicated by hospital acquired infections caused by bacteria including Acinetobacter baumannii and Klebsiella pneumoniae with high drug resistance.

OBJECTIVETo evaluate the effects of periodontal treatment on the clinical response, systemic inflammatory parameters, and metabolic control of type 2 diabetes patients with moderate to severe periodontitis.

METHODSA total of 56 patients with mean clinical attachment level (CAL)>3 mm were included in the subgroup analysis. A repeated-measures ANOVA (group factor: treatment group and control group; time factor: initial visit, 1.5, 3, and 6 months) was used to analyze the probing depth (PD), CAL, bleeding on probing (BOP), high-sensitivity C-reactive protein (hsCRP), glycated hemoglobin (HbA1c), and fasting plasma glucose.

RESULTSSignificantly lower PD (F=62.898, P-0.000), CAL (F=51.263, P-0.000), BOP (F=75.164, P=0.000), hsCRP (F=6.391, P=0.010), HbA1c(F=4.536, P=0.011), and fasting plasma glucose level (F= 3.073, P=0.031) were observed after therapeutic periodontal improvement. The inter-group differences for PD (t=-2.050, P=0.045), BOP (t=-4.538, P=0.000), and hsCRP (t=-2.261, P=0.028) were statistically significant after therapy.

CONCLUSIONNon-surgical periodontal treatment can effectively improve periodontal status, circulating inflammatory status, and metabolic control of diabetic patients with moderate to severe periodontitis.

Aim To investigate the effects of ursolic acid from loquat leaves on proliferation inhibition and expression of PPAR-γ 、TGF-β1 in rat hepatic stellate cells, so as to explore the mechanism of anti-hepatic fibrosis of UA.Methods HSC-T6 cells were randomly divided into blank group, rosiglitazone control group, the low, medium and high concentration of UA group to detect the cell proliferation inhibition by CCK-8 after 24,48,72 h.The content of type collagen Ⅰ in cell culture supernatant of each group was examined by ELISA.The expression of PPAR-γ mRNA, TGF-β1 mRNA in HSC-T6 cells exposured were examined by real-time quantitative PCR.Effects on HSC-T6 PPAR-γ and TGF-β1 protein from each group were detected by immunocytochemical method.Results CCK-8 results showed that the inhibitory rate of UA on cell proliferation increased with the prolongation of drug action time(P<0.01).ELISA results showed that with the increase of the concentration of UA, the content of type Ⅰ collagen content decreased(P<0.01).Real-time PCR results showed that with the increase of the concentration of UA, and the expression of PPAR-γ mRNA increased, the expression of TGF-β1 mRNA decreased(P<0.01).The results of immunocytochemistry showed that the expression of PPAR-γ protein was increased, and the expression of TGF-β1 protein was decreased with the increase of the concentration of UA(P<0.01).All effects mentioned above were dose-dependent.Moreover, the effects in the high concentration groups were stronger than those in control group.Conclusion UA can inhibit the proliferation of HSC-T6 cells, Which may be associated with the up-regulation of PPAR-γ expression and the down-regulation of TGF-β1 expression.

ObjectiveTo investigate the variation of thalamus metabolism in patients with multiple sclerosis (MS) or neuronmyelitis optica (NMO) using 1H-MRS.Methods1H-MRS was performed to 32 MS patients (MS group),28 NMO patients (NMO group) and 35 healthy volunteers (normal control group).The ratios of metabolism in thalamus,including N-acetylaspartic acid/creatine (NAA/Cr),choline/creatine (Cho/Cr) and myo-inositol/creatine (mI/Cr) were calculated and compared.ResultsThere was statistical difference of NAA/Cr in thalamus among the three groups (P＜0.05).NAA/Cr in thalamus of MS group was significantly lower than that of normal control group (t= -3.45,P＜0.05),while no statistical difference of Cho/Cr and mI/Cr was found (t=0.086,0.661,all P＞0.05).No statistical difference of NAA/Cr,Cho/Cr or ml/Cr was found between NMO group and normal control group (t=-0.792,1.408,1.735,all P＞0.05).Conclusion1H-MRS shows the decrease of thalamus NAA/Cr that suggesting axon damage in MS patients,but in NMO patients no same result is found.1 H-MRS can reflect the pathological changes of MS and NMO,and improve the differential diagnosis of the two diseases.

Objective To apply the real-time gray scale contrast-enhanced ultrasonography(CEUS) with quantitative analysis technique to monitor the change of the renal cortex blood perfusion before and after Salvia miltiorrhiza treatment of rabbit renal is-chemia-reperfusion injury and to investigate the application value of the ultrasound contrast for evaluating the effect of medication in the treatment of rabbit renal ischemia-reperfusion injury (IRI) .Methods The rabbit right kidney was resected and the left renal pedicle was occluded for 60 min ischemia ,then the perfusion was recovered for establishing the IRI model .Salvia miltiorrhiza injec-tion was given for observing the pathological changes of the left kidney and the renal cortex blood prefusion under the contrast-en-hanced ultrasonography .The parameters of renal cortex blood perfusion were quantitatively analyzed by the time-intension curves . Results After IRI occurrence ,the time-intensity curve (TIC) of the rabbit renal cortex was slowly ascended .The time to peak (TTP) was extened and the rising slope(Grad) of the curve ascending branch was declined (P< 0 .05);after Salvia miltiorrhiza treatment ,TTP decreased and Grad increased obviously(P<0 .05) .Conclusion CEUS combined with quantitative analysis can re-flect the renal blood perfusion abnormity caused by ischemia-reperfusion and discover the change of the renal blood perfusion after medication treatment .

Objective To compare the differences of event-related potentials (ERP) of left and right cerebral hemispheres and behavioral characteristics in the mental arithmetic practice between ADHD and normal children,and to explore the neural mechanisms of mental arithmetic by ADHD children.Methods ERP and behavioral data of 32 ADHD and 32 normal children in mental arithmetic,to illustrate,simple addition,subtraction and multiplication within 20 were recorded.Results ERP:① The differences of N2 amplitudes in ADHD children 's left and right cerebral hemispheres while doing mental arithmetic,such as,addition,subtraction and multiplication were not statistically significant (addition:(-6.2±7.3) μV,(-6.6± 8.1) pV ; subtraction:(-5.5±6.4) μV,(-5.8± 6.5) μV ; multiplication:(-5.9± 8.2) μV,(-6.0± 8.6) μV ; all P＞0.05).However,normal group's N2 amplitude of left hemisphere(F3) were obviously higher than those of the right hemisphere (F4),considered to be statistically significant difference (addition:(-6.8±4.0) μV,(-5.9±4.3) μV ; subtraction:(-7.5±4.8) μV,(-6.3±4.4) μV ;multiplication:(-6.9±3.7)μV,(-5.7±4.4)pV ; all P＜0.05).② ADHD group's N2 amplitude of subtraction practice was significantly lower than that of addition and multiplication,while normal control group was the opposite.③There were not statistically difference between N2 incubation of left and right hemisphere while addition,subtraction,and multiplication were done (P＞0.05).Behaviorism:① ADHD group's reaction time towards answer making were much longer than those of the normal control group (addition:(983± 183) ms,(833± 164) ms ; subtraction:(1005±160)ms,(859±170)ms;multiphcation:(975±180)ms,(836±175)ms; P＜0.05).② Accurate rate:ADHD group were all lower than those of normal group.Conclusion There were functional limitations of no obviously advantage hemisphere and two hemisphere coordination while ADHD children were performing mental arithmetic,also hmitations in conflicting information processing,decision making,and more obviously in subtraction practice.