Objective To observe the pharmacokinetic feature of Radix Acanthopanacis Senticosis suspension(RASS). Methods The research was conducted with pharmacodynamic endpoint approach and pharmacodynamic approach and adopted with phagocytic index as pharmacological parameter. Results Pharmacodynamic endpoint approach: K_(el)=0.2d~(-1), K_a=2.5 d~(-1), AUC(S_0)=10.4g?kg~(-1)?d, VRT=19.3d~2.Pharmacodynamic approach: K_(el(ef))=0.1d~(-1), K_(a(ef))=2.9d~(-1), AUC(S_0)_((ef))=62.7(%)?d, VRT_((ef))=43.2d~2. The data obtained by pharmacodynamic approach differed from that by pharmacodynamic endpoint approach, indicating the delay of drug effect. Conclusion Pharmacokinetic Data of RASS are first obtained in this article, which show that pharmacodynamic endpoint approach and pharmacodynamic approach is feasible.

Objective To evaluate the clinical features,pathological grades,treatment and prognosis in bladder cancer patients under 40 years.Methods A retrospective review of transitional cell carcinoma of the bladder in patients under 40 years who had been treated from January 1994 to April 2005 were conduc- ted.The patients were divided into 2 groups(group A,20-30 years;group B,31-40 years)based on their age.The differences in pathologic grading,recurrence rate and positive rate of urine cytology were compared between the 2 groups.The statistical analyses were performed using x~2 test.Results The incidence of bladder cancer in patients under 40 years was 4.2%(92/2200).The male/female ratio was 2.7:1.0.At initial visit,86%(68.7% in group A and 91.1% in group B)of the patients presented with gross hematuri- a;and 25.0% in group A and 33.9% in group B concomitantly had frequency and dysuria.The mean disease course in the 2 groups was 3.8 months for male and 6.9 months for female.Solitary tumor occurred in 19 ca- ses(100.0%)in group A and 63(86.3%)in group B;and multiple carcinomas,in 10 cases(13.7%)in group B.All were superficial bladder cancers in group A,while 6(8.2%)were invasive carcinomas in group B.According to WHO pathological grading of bladder cancer,in group A,10 cases(52.6%)had G_1,8 (42.1%)had G_2 and 1(5.3%)had G_3 tumors;in group B,8 cases(11.0%)had G_1,49(67.1%)had G_2 and 16(21.9%)had G_3 tumors(P＜0.01).The positive rate of urine cytology was 53.3% in all 92 ca- ses(25.0% in group A and 60.7% in group B,P＜0.05).The diagnostic rates by B-ultrasound and cysto- scopy were 98.6% and 100.0%,respectively.Of the 92 patients,11(12.0%)were treated by partial cys- tectomy,73(79.3%)by TUR-Bt and 8(8.7%)by cystectomy.The follow-up was 3-115 months(mean, 39 months).The overall recurrence rate was 12.0%,with 5.3%(1/19)in group A and 13.7%(10/73)in group B.Of 10 patients with multiple carcinomas,6(60.0%)developed recurrence;and of 82 with solitary tumors,5(6.1%)developed recurrence,with significant difference between them(P＜0.01).Two of the multiple carcinoma patients developed invasive carcinoma.Conclusions In bladder cancer patients under 40 years,the positive rate of urine cytology,pathological grading and recurrence rate increase with age.Multi- ple tumors,invasive carcinoma and long-term smoking are high risk factors for tumor recurrence.TURBt is the main surgical method for treating bladder cancer patients under 40 years.

Objective Determination of polysaccharide content in dried peel seeding watermelon, and its mechanism of lowering blood glucose.Methods The content of polysaccharides in dried peel of seeding watermelon was determined by the method of phenol-sulfuric acid.Mice were given starch and sucrose load,and the mouse blood glucose was examined.The inhibitory activities of seeding watermelon against α-glucosidase were tested by the colorimetry of pNPG.Results The calibration of polysaccharide was A=0.066 4 C+0.022 6, R2=0.999 5, the content of polysaccharide in dried peel of seeding watermelon was 4.45% (n=10,RSD=1.80%);50,100 and 150 mg·kg-1 of polysaccharide could significantly reduce the starch load in mice blood glucose(P<0.01);100 and 150 mg·kg-1 of polysaccharide significantly reduced sucrose load blood glucose(P<0.01);polysaccharide concentration in 18 mg·mL-1 could significantly inhibit the activity of α-glucosidase as the inhibitory rate was (73.19±3.45)% (n=10).Conclusion Seeding watermelon polysaccharide has effect on lowering blood glucose in starch and sucrose load mice, and inhibits α-glucosidase significantly.

Animals ; Aorta ; drug effects ; physiology ; Blood Pressure ; drug effects ; Cadmium ; toxicity ; Female ; In Vitro Techniques ; Male ; Muscle, Smooth, Vascular ; drug effects ; physiology ; Rabbits ; Vasoconstriction ; drug effects

Objective To evaluate the correlations between CT features and histopathologic subtypes of lung adenocarcinomas presenting as pure ground-glass nodules (pGGN) of 1 cm or less in maximal diameter. Methods CT appearances, pathology and clinical data of 95 patients (97 lesions) who underwent curative resection of lung adenocarcinomas presenting as pGGN≤1 cm in diameter from March 2011 to February 2015 were retrospectively analyzed. Of the 97 lung adenocarcinomas, there were 19 atypical adenomatous hyperplasia (AAH) (19.6%), 31 adenocarcinoma in situ (AIS) (31.9%), 19 minimally invasive adenocarcinoma (MIA) (19.6%) and 28 invasive pulmonary adenocarcinoma (IPA) (28.9%). Fifty (51.5%) were preinvasive (AAH+AIS) and 47 (48.5%) were invasive (MIA+IPA). Lesion size and density were compared among pathologic subtypes using analysis of variance (ANOVA). Lesion size were compared between preinvasive and invasive lesions using 2?independent samples t?test. Lesion location, presence of bubble?like sign, air bronchogram, vessel changes, margin, and tumor?lung interface were compared among histopathologic subtypes using chi?square test. Receiver operating characteristic (ROC) curve analysis was performed to evaluate the cut-off point of size in discriminating preinvasive lesions from invasive lesions. Results Of the 97 lesions, there were no statistically significant differences among histopathologic subtypes in terms of lesion density, presence of bubble?like sign, air?bronchogram, and margin (P>0.05). Mean size of AAH, AIS, MIA and IPA was (0.72 ± 0.19), (0.82 ± 0.14), (0.84 ± 0.11) and (0.85 ± 0.16) cm respectively. There were statistically significant differences among histopathologic subtypes in terms of lesion size (F=3.16, P=0.028). The vessel changes occurred in 2 of AAH, 11 of AIS, 10 of MIA and 17 of IPA. There were statistically significant differences among histopathologic subtypes in terms of vessel changes (χ2=13.22, P=0.004). Lesions with clear tumor?lung interface were in 10 of AAH, 24 of AIS, 17 of MIA, and 26 of IPA. There were statistically significant differences among histopathologic subtypes in terms of tumor?lung interface (χ2=12.67, P=0.005). The optimal cutoff value of lesion size for differentiating preinvasive lesions from invasive lesions was 0.82 cm (sensitivity, 61.7%;specificity, 62.0%). Conclusion Lesion size, vessel changes, and lung?tumor interface may indicate the invasiveness of lung adenocarcinoma presenting as pGGNs of≤1 cm in diameter.

Objective:To study the changes of left atrial volume and function in patients with acute myocardial infarction (AMI) by three-dimensional echocardiography (3DE) and magnetic resonance imaging (MRI).Methods:Thirty-one patients with AMI in Henan People′s Hospital from March to October 2020 were selected as AMI group and 30 healthy subjects were selected as control group.The left atrial maximum volume (LAVmax), minimum volume (LAVmin), presystolic volume (LAVpre), volume index(LAVI), emptying volume (LAEV), ejection fraction (LAEF), long axis and circumferential strain (LASr, LASr-c; LAScd, LAScd-c; LASct, LASct-c) were measured by two-dimensional echocardiography (2DE), 3DE left atrial automatic quantitative technique and CMR.The differences of left atrial indices between two groups and among 2DE, 3DE left atrial automatic quantitative and CMR techniques were compared. Pearson correlation coefficient and Bland-Altman analysis were used to compare 2DE, 3DE left atrial automatic quantitative and CMR. Intra-observer and inter-observer repeatability of 2DE, 3DE left atrial automatic quantitative technique and CMR were evaluated by intra-group correlation coefficient (ICC).Results:①Compared with the control group: LAVmax, LAVmin, LAVpre, LAVI, LASct and LASct-c by 3DE left atrial automatic quantitative increased, while LAEV, LAEF, LASr, LASr-c, LAScd and LAScd-c by 3DE left atrial automatic quantitative technique decreased in AMI group (all P<0.05). ②LAVmax, LAVmin, LAVpre, LASr, LAScd, LASct measured by 3DE left atrial automatic quantitative were more strongly related to CMR than that measured by 2DE(all P<0.05). Compared with CMR, 2DE underestimated LAVmax, LAVmin, LAVpre, LASr, LAScd, LASct by (8.01±4.01)ml, (9.03±4.15)ml, (7.26±2.09 )ml, (7.26±1.23)%, (5.02±1.08)%, (6.24±0.43)%(all P<0.05); 3DE left atrial automatic quantitative technique underestimated LAVmax, LAVmin, LAVpre, LASr, LAScd, LASct by (1.67±0.62)ml, (1.95±0.90)ml, (2.52±0.76)ml, (1.97±0.59)%, (2.03±0.39)%, (1.02±0.30)% (all P>0.05); The time-consuming of 2DE and 3DE left atrial automatic quantitative technique was reduced, and the time-consuming of 3DE left atrial automatic quantitative technique was less than 2DE [(12.18±3.24)s vs (73.34±10.37)s]. ③The reproducibility of 2DE, 3DE left atrial automatic quantitative technique and CMR measurement within and between observers were good. Conclusions:3DE left atrial automatic quantitative technique can effectively evaluate the changes of left atrial volume and function in patients with AMI. Compared with 2DE and CMR, it is simple, rapid, accurate and repeatable, which provides a new and effective method for clinical study of cardiovascular diseases.

Adult ; Aged ; Angina Pectoris ; blood ; drug therapy ; Angiotensin II ; blood ; Capsules ; Diagnosis, Differential ; Double-Blind Method ; Drugs, Chinese Herbal ; therapeutic use ; Endothelins ; blood ; Female ; Humans ; Male ; Medicine, Chinese Traditional ; Middle Aged ; Phytotherapy

BACKGROUND:Oversize stress of a dental implant and its surrounding tissue is the main factor to affect the
long-term use of dental implants. So, the reasonable and precise design of implant shape is one of the important methods of prolonging the life span of dental implants.
OBJECTIVE:To make the optimal analysis and design of the diameters of connector screw and central screw of the adjustable-angle dental implant invented in the earlier stage.
METHODS: The finite element analysis model of the edentulous mandible with adjustable-angle dental implant was established by software Pro/E 5.0, Mimics 10.0 and ANSYS Workbench 14.5. The maximum equivalent
stress of dental implant-edentulous mandibular model was analyzed.
RESULTS AND CONCLUSION:The maximum equivalent stress of dental implant-edentulous mandibular model

ObjectiveTo assess the efficacy and safety of Xuebijing injection for the treatment of severe acute pancreatitis (SAP).Methods An extensive search of related literatures from the Cochrane Library, EMBASE, China Biology Medicine (CBM), CNKI, VIP and Wanfang data up to March 2014 was performed. Randomized controlled trials (RCTs) regarding Xuebijing injection for the treatment of SAP were collected regardless of languages. Jadad scale was taken for quality evaluation of the included studies by two researchers. The patients in control group were given conventional treatment, and those of the Xuebijing group were given Xuebijing injection on the top of conventional treatment. The Cochrane Collaboration RevMan 5.2 software was used for data analysis regarding the effect of Xuebijing injection on the mortality, incidence of complication, effective rate, the length of stay in hospital, and the safety of the drug in patients with SAP.Results A total of 15 published reports meeting the inclusion criteria were enrolled. The methodological quality of the trials was low. Meta analysis showed that the mortality in Xuebijing group was significantly lower [odds ratio (OR) = 0.37, 95% confidence interval (95%CI) =0.17 - 0.77,P = 0.008], and the incidence of complication was also significantly decreased (OR = 0.26, 95%CI =0.14 - 0.45,P< 0.000 01) as compared with those of control group. The effective rate in Xuebijing group was significantly higher than that of the control group [relative risk (RR) = 0.85, 95%CI = 0.80-0.91,P< 0.000 01]. The length of stay in hospital in Xuebijing group was significantly shorter than that of the control group [mean difference (MD) = -5.28, 95%CI = -6.69 to -3.86,P< 0.000 01]. Adverse reactions of Xuebijing injection were reported in 2 studies. The adverse reaction in one study was headache and nausea, which were relieved by adjusting the speed of intravenous infusion, and mild rash was reported in another case, and it disappeared after the withdrawal of Xuebijing. Conclusions The currently available evidence shows that Xuebijing injection may have some therapeutic effect on SAP. Because of the low methodological quality of the included trials, multi-center and high-quality RCTs with large sample sizes are needed to provide stronger evidence.

Objective To establish a magnetic nanoparticles separation-based quantitative real-time PCR(RT-PCR)assay for fast and accurate detection of Plasmodium falciparum and providing a technical support for improving the control and preven-tion of imported malaria. Methods According to the conserved sequences of the P. falciparum genome 18SrRNA,the species-specific primers and probe were designed and synthetized. The RT-PCR was established by constructing the plasmid standard , fitting the standard curve and using magnetic nanoparticles separation. The sensitivity and specificity of the assay were evaluat-ed. Results The relationship between the threshold cycle(Ct)and logarithm of initial templates copies was linear over a range of 2.5×101 to 2.5×108 copies/μl(R2=0.999). Among 13 subjects of entry frontier,a P. falciparum carrier with low load was de-tected by using the assay and none was detected with the conventional examinations(microscopic examinations and rapid tests). Conclusion This assay shows a high sensitivity in detection of P. falciparum,with rapid and accurate characteristics,and is especially useful in diagnosis of P. falciparum infectors with low parasitaemia at entry-exit frontier ports.