Objective To investigate the pharmacokinetic profiles of baicalin and wogonoside in diabe-tic rats in vivo,which are two major constituents in Huanglian-Jiedu Decoction(HJD).Methods The diabetic rats were induced by ip administration of streptozotocin(STZ).After the establishment of the method and the set-up of diabetic rats,the pharmacokinetic profiles of baicalin and wogonoside were investigated.Diabetic and normal rats were ig HJD extract,and then the blood samples were collected at the given time points.Contents of baicalin and wogonoside in diabetic and normal rat plasma were assayed by HPLC-UV method.The pharmacokinetic parameters(except Cmax and tmax) were analyzed by noncompartmental method.The area under the serum concentration-time curve(AUC0-t) was calculated using trapezoidal rule to the last point.Moreover,the presystemic metabolism of baicalin was investigated and compared to explore the pharmacokinetic difference by fermentation of baicalin in feces suspensions of normal and diabetic rats,respectively.Results The pharmacokinetic parameters of baicalin in normal and diabe-tic rats were:(4.50?1.92) and(7.5?1.0) h for tmax 2;(2.83?0.25) and(9.54?2.87) ?g/mL for Cmax1,(2.56?0.63) and(6.58?1.15) ?g/mL for Cmax2;(37.58?7.57) and(92.75?24.62) ?g?h/mL for AUC(0～24),(6.6?2.4) and(12.64?3.35) h for t1/2,respectively.And the pharmacokinetic parameters of wogonoside in normal and diabetic rats were:(5.5?1.0) and(8.00?1.63) h for tmax 2;(1.36?0.17) and(6.16?1.40) ?g/mL for Cmax1;(1.58?0.17) and(4.11?0.76) ?g/mL for Cmax2;(27.02?3.72) and(58.16?16.43) ?g?h/mL for AUC(0～24);(9.72?2.24) and(7.89?1.63) h for t1/2,respectively.The results indicated that Cmax1,Cmax2,AUC(0～24) of baicalin and wogonoside were significantly enhanced and t1/2 of baicalin was remarkably extended when compared with the normal rats.And the results also revealed that baicalin contained in HJD hydrolyzed more rapidly when incubated in the feces suspension of diabetic rats than in that of normal rats.Conclusion The results indicate that the pharmacokinetic difference of baicalin between diabetic and normal rats may result from the presystemic metabolism of baicalin.

Portable electrocardiogram monitor is an important equipment in the clinical diagnosis of cardiovascular diseases due to its portable, real-time features. It has a broad application and development prospects in China. In the present review, previous researches on the portable electrocardiogram monitors have been arranged, analyzed and summarized. According to the characteristics of the electrocardiogram (ECG), this paper discusses the ergonomic design of the portable electrocardiogram monitor, including hardware and software. The circuit components and software modules were parsed from the ECG features and system functions. Finally, the development trend and reference are provided for the portable electrocardiogram monitors and for the subsequent research and product design.
China ; Electrocardiography ; instrumentation ; Equipment Design ; Humans ; Monitoring, Physiologic ; instrumentation ; Software

OBJECTIVE:To investigate antioxidant effects of different extract parts from Aquilaria sinensis leaves. METH-ODS:A. sinensis leaves were extracted by reflux extraction with petroleum ether,ethyl acetate,absolutely ethanol,water to obtain corresponding parts (AGP,AGE,AGA and AGW parts). The ability of different extracts eliminating ABTS+ free radical,DPPH free radical and O2-free radical and reducing Cu2+ were investigated. IC50 was also calculated. Vitamin C(VC)was used as positive control in above tests. RESULTS:Those parts eliminated above free radicals and reduced Cu2+ in concentration-dependant manner, among which maximal elimination rate of AGA and AGW parts to ABTS+ free radical were 100% and 81.07%(IC50=14.89,23.12 mg/L)and higher than that of VC(88%);those of other parts were less than 50%. The maximal elimination rate of AGA parts to DPPH free radical was 67.74%(IC50=47.96 mg/L),but still lower than that of VC(91.44%);the elimination rates of other parts were all weak and lower than 40%. The maximal elimination rates of AGA and AGW parts to O2-free radical were 67.79% and 61.79%(IC50=393.01,421.04 mg/L),but still lower than that of VC(88%);the elimination rates of other parts were all lower than 33%. The maximal reduction percentage of AGP,AGE,AGA and AGW parts to Cu2+ were all higher than 50%(IC50=55.99, 40.27,25.44,31.06 mg/L,respectively),but still lower than that of VC (100%). CONCLUSIONS:Different extract parts from A. sinensis leaves have antioxidant activity in vitro,and that of AGA is the strongest.

Objective To investigate the relationship between the composition of vaginal microbiota and the course of cervical precancerous lesion.Methods A total of 64 vaginal swabs were collected from 22 healthy women, 18 CINⅠ patients and 24 CINⅡ/Ⅲ patients who visited Obstetrics and Gynecology of the Second Xiangya Hospital of Central South University during July 2014 and July 2015.The Bacterial genomic DNA was extracted and the V3 and V4 hypervariable regions of 16S rRNA were amplified and high-throughput sequenced.The abundance and composition of vaginal microbiota were analyzed by Uparse, Mothur and LefSe statistical software.Results There was no significant difference in Alpha diversity index between CINⅡ/Ⅲ group(Chao:63±32;ACE:72±38;Simpson:0.70±0.27;Shannon:0.70±0.63) and control group ( Chao:48±24;ACE:54±25;Simpson:0.71±0.27;Shannon:0.65±0.58)(W=192,P=0.11;W=189,P=0.10;W=281,P=0.72;W=241,P=0.62).The ACE(85±37) and Chao(66±25) values of CINⅠgroup were significantly different from those of the control group (ACE:54±25;Chao:48±24)(W=99,P=0.006;W=113,P=0.02).At the phylum level, 78.69%(309 020/392 722) of the vaginal microbiota in the control group was Firmicutes, 16%(62 846/392 722) was Actinobacteria.Firmicutes was reduced to 64.86%(208 422/321 318) and Actinobacteria increased to 27.71%(89 040/321 318) in CINⅠgroup.The composition of vaginal microbiotain in CINⅡ/Ⅲ group was similar to those of control group.At the genus level, the composition of vaginal microbiota were similar between CINⅡ/Ⅲ group and control group, with Lactobacillus as predominant genus[71.81%(307 658/418 424)], Gardnerella[12.91%(55 299/428 424)], others such as Prevotella, atopobium were less.In the CINⅠ group, the abundance of Lactobacillus was decreased to 56.26%(180 787/321 318), Gardnerella was increased to 19.62%(63 057/321 318), and Listeria was increased to 7.7%(24 746/321 318).The composition of vaginal microbiota in the most samples was classified as CSTⅢ and CSTⅠ, with Lactobacillus inersand and Lactobacillus crispatus were dominant respectively.There was no significant difference in the composition of vaginal microbiota between the three groups(χ2=2.72, P=0.949).LEfSe analysis showed that the abundance of bacteria in CIN group and control group were varied.At the genus level, there were significant differences in the abundance of Geobacter, Atopobium and Ureaplasma (P<0.05, P<0.05, P<0.01, respectively).At the species level, there was significant difference in the abundance of Ureaplasma urealyticum serotype 9 (P<0.01).Conclusion The diversity and the composition of vaginal microbiota were similar between CIN patients and healthy women, but the abundances of some bacteria were varied, with Ureaplasma increased in patients with CIN.

Objective To explore the clinicopathological features and prognostic significance of human epidermal growth factor receptor 2 (HER2) in gastric carcinoma. Methods Pathological data of 127 patients with gastric carcinoma were retrospectively analyzed. HER2 expressions of all patients were detected by immunohistochemistry (IHC). 119 (93.7 %) patients were undergone R0 dissection and 123 (96.9 %) cases received D2 lymph nodes dissection. 51 (40.2 %) patients received adjuvant chemotherapy. The proportional differences of clinicopathological features for patients between HER2-positive and HER2-negative were compared, including the patients' survival. Results HER2 overexpression rate was 8.7 % (11/127) in gastric carcinoma patients. For the patients with HER2-positive and HER-negative, the lymph node metastasis rates were 100.0 % (11/11) and 81.9 % (95/116), respectively (P= 0.041). The 3-year overall survival (OS) rates for HER2-positive and HER2- negative patients with gastric carcinoma were 32.7 % and 42.9 % (P=0.413), and the 5-year progression free survival (PFS) rates were 27.3 % and 42.2 % (P = 0.354), respectively. Among patients with HER2-negative, 3-year OS rate for patients with surgery plus adjuvant chemotherapy was 55.3%, compared with 35.4%for patients with surgery alone (P=0.015), and the 3-year PFS rates were 53.3 % and 35.3 % (P= 0.038), respectively. Among patients with HER2-positive patients, 3-year OS rate for patients with surgery plus adjuvant chemotherapy was 0, compared with 75.0%for patients with surgery alone (P=0.002), and the 3-year PFS rates were 0 and 60.0% (P=0.004). Conclusions HER2 is expressed in gastric carcinoma tissue, related to lymph node metastasis. HER2 status are not correlated with the prognosis for gastric carcinoma patients, however, it is likely to be a predictive marker for adjuvant treatment after surgery for patients with gastric carcinoma.

Objective:To investigate the clinical effect of the anterolateral thigh perforator chimeric flap in the treatment of the wound of diabetic foot ulcer (DFU) .Methods:From January, 2018 to December, 2019, 14 cases wound of DFU of type II diabetic were treated by anterolateral thigh chimeric perforator flap. The patients were 10 males and 4 females, at 49 to 58 years old. Of the 14 patients, 10 with simple peripheral neuropathy, 4 with peripheral neuropathy complicated with vascular disease, and none with single vascular disease. With strict control of patients' blood glucose, antibiotics blended bone cement was applied or filled onto grade 2 or higher grade Wagner's DFU after debridement. In addition, the anterolateral thigh chimeric perforator flap was transferred 2 to 3 weeks later. The size of flap was 8 cm×3 cm-27 cm×7 cm. Regular followed-up were made after surgery.Results:Thirteen flaps survived in one stage after surgery. The other 1 flap had venous vascular crisis, and survived completely after active exploration. The patients were followed-up for 6-12 months. All the flaps survived well in good shape and texture. The donor and recipient areas healed well. The functional recoveries of the DF were satisfactory.Conclusion:Application of anterolateral thigh perforator chimeric flap in repair of the refractory wound of DF achieves a good clinical outcome and effectively improves the life quality of patients.

This paper presents a preliminary study of rabbit experiment modality incorporating a new indicator for evaluating cardiac function changes, providing a basis for subsequent study of cardiac fatigue. Using only biochemical indicators, such as troponins, is difficult to make a distinction between exercise-induced cardiac fatigue (EICF) and exercise-induced cardiac damage (EICD). Therefore, some new indicators are needed to evaluate cardiac fatigue synthetically. In our study, we used New Zealand white rabbits to conduct a multi-step swimming experiments with load. We made the rabbits reach an exhaustive state to evaluate whether the amplitude ratio of the first to second heart sound (S1/S2) and heart rate (HR) during the exhaustive exercise would be decreased and whether they would be able to recover after the exhaustive exercise for 24 hours. During the first phase of swimming, S1/S2 and HR were increased, and then decreased at exhaustive state. They were recovered after the exhaustive exercise for 24 hours. Overloading led to deaths of three rabbis, and new phenomena from overloading and related to this kind of death were observed. The experiments proved that Multi-steps swimming experiments with loads by using New Zealand white rabbit is useful for studying cardiac fatigue and premonition of sudden cardiac death.
Animals ; Cardiovascular Physiological Phenomena ; Death, Sudden, Cardiac ; Female ; Heart ; physiology ; Heart Rate ; physiology ; Male ; Muscle Fatigue ; physiology ; Myocardial Contraction ; physiology ; Myocardium ; chemistry ; Physical Endurance ; physiology ; Rabbits ; Stress, Physiological ; physiology ; Swimming

Objective To analyze histopathological and clinical features of dermatofibroma,and to explore the relationship between them.Methods Clinical and histopathological data were collected from 150 patients with histopathologically confirmed dermatofibroma in Department of Pathology,Shanghai Skin Disease Hospital from September 2017 to August 2018,and analyzed retrospectively.Results Among the 150 patients,65 were males,and 85 were females.Their age was 42 ± 13.8 years,and the course of disease ranged from 3 months to 30 years.Some of the patients had concomitant symptoms,mainly manifesting as itching,some had spontaneous pain and mild tenderness,and 18 patients had a history of injury,insect bite or infection at lesion sites.Skin lesions mainly occurred on the extremities (107 cases,71.3％),and most were solitary (105 cases,70％).Before pathological examinations,102 cases were clinically diagnosed as dermatofibroma,16 as epidermoid cyst,13 as pigmented nevus,3 as keloid,12 as skin mass,1 as malignant melanoma,1 as xanthogranuloma,1 as prurigo nodularis,and 1 as neurofibroma.Among 169 hematoxylin and eosin (HE)-stained sections,25 (14.8％) appeared to be consistent with aneurysmal dermatofibroma,66 (39.1％)with cellular dermatofibroma,36 (21.3％) with sclerosing dermatofibroma,and 22 (13.0％)with epithelioid dermatofibroma.Coexistence of two or more subtypes could be seen in 12 sections.There were also a few new variants,such as dermatofibroma with hyperplastic sweat duct (1 case),deep dermatofibroma (3 cases),dermatofibroma with epithelioid cells intermingled with hyperplastic collagen (1 case).The duration of aneurysmal dermatofibroma varied from 7 months to 30 years,and most manifested as skin masses on the lower extremities.A relatively short course of disease was observed in patients with cellular dermatofibroma,who often visited a hospital several months after the onset,and cellular dermatofibroma was commonly observed on the extremities and frequently accompanied with itching and pain.The duration of sclerosing or atrophic dermatofibroma was usually long for years or decades,and it commonly occurred on the upper limbs without concomitant symptoms.Epithelioid dermatofibroma of varied durations had various clinical manifestations,frequently occurred on the lower limbs without concomitant symptoms.Conclusions The clinical and pathological manifestations of dermatofibroma are diverse.Different dermatofibroma lesions can share similar typical histopathological manifestations,and atypical pathological features can interfere with the diagnosis of dermatofibroma.

Objective:To analyze clinical phenotypes and pathogenic mutations of a patient with classic tuberous sclerosis complex.Methods:Clinical data was collected from a patient with classic tuberous sclerosis complex. Next-generation sequencing was performed to screen pathogenic gene variants, and Sanger sequencing to verify the mutations. Minigene plasmids were constructed and transfected into the human renal epithelial cell line 293T, and RNA was extracted for transcriptional analysis.Results:The patient clinically presented with recurrent epileptic seizures, facial angiofibroma, periungual fibroma, pulmonary lymphangioleiomyomatosis, renal angiomyolipoma and multiple osteosclerosis. Next-generation sequencing revealed a suspected pathogenic variant in the TSC2 gene in the patient. Sanger sequencing identified a heterozygous mutation c.336_336+15delGGTAAGGCCCAGGGCG in exon 4 of the TSC2 gene in the patient, but not in his parents or 100 unrelated healthy controls. Moreover, this mutation had not been previously reported. The minigene experiment showed changed mRNA sequence of the TSC2 gene in this patient with loss of the authentic splice site in exon 4 and insertion of a 74-bp intron, which shifted the splice site 90 bp downstream (r.336delins336+16_336+90) .Conclusion:The novel heterozygous mutation c.336_336+15delGGTAAGGCCCAGGGCG in exon 4 of the TSC2 gene can lead to aberrant splicing, and may contribute to tuberous sclerosis complex in this patient.

Objective To investigate the after cardiopulmonary resuscitation in patients with serum cell adhesion molecule -1 (ICAM-1) changes and the clinical significance. Methods The patients were divided into cardiac arrest cardiopulmonary resuscitation was 5 minutes, 5-10 minutes inner CPR group, 10-30 minutes inner CPR group, and in healthy people as control group, a total of 4 groups, in each group were measured in venous blood ICAM-1 level by ELISA method. Results The level of cardiopulmonary resuscitation in patients with serum cell adhesion molecules in -1 were higher than those in healthy control group (P<0.05) ; and the longer the cardiopulmonary resuscitation in pa-tients with venous serum intercellular adhesion molecule -1 is higher(P<0.05). Conclusion The level of serum in pa-tients with cardiopulmonary resuscitation of cell adhesion molecule -1 will increase obviously, cardiopulmonary resus-citation earlier implementation, the levels of ICAM-1 were lower, the better the prognosis(P<0.05).