OBJECTIVE:To study the quality standards of Compound kuqin ointment.METHODS:TLC method was used for the identification of alion,baicalin,menthol.The content of tetrahydropalmatine and baicalin were determined by HPLC.RESULTS:The identification method was specific.The linear range of tetrahydropalmatine was 0.131～3.275 ?g(r=0.999 9) with an average recovery of 102.40%(RSD=0.77%,n=6).The linear range of baicalin was 0.050 35～2.014 ?g (r=0.999 9)with an average recovery of 100.97%(RSD=1.42%,n=6).CONCLUSION:The method is simple,accurate and reproducible for the quality control of Compound kuqin ointment.

This study was purposed to investigate the possible side effects of L-asparaginase (L-ASP) in the treatment of patients with acute lymphoblastic leukemia (ALL) and to explore the correlation of these side effects at different therapeutic stages by means of retrospective analysis, so as to reduce the incidence of side effects and improve the safety of chemotherapy and the long-term survival of patients. The probability and severity of side effects related to use of L-ASP in 38 cases of ALL during remission induction therapy (VDLDex regimen) and 40 cases of ALL during maintenance intensive therapy (VMLDex regimen) were compared. The results showed that allergic response, diabetes and drug-induced liver disease happened more frequently during maintenance therapy than during remission induction therapy, while defibrination, abnormal hemagglutinin, acute pancreatitis, hypoproteinemia, gastrointestinal reaction and infectious shock were observed more during remission induction therapy than those at maintenance therapy. In conclusion, the L-ASP showed some side effects especially for the patients during the remission induction therapy which should be paid enough attention. The regular and comprehensive monitoring can effectively reduce and avoid the side effects of L-ASP, to improve the safety of chemotherapy.
Antineoplastic Agents ; administration & dosage ; adverse effects ; therapeutic use ; Asparaginase ; administration & dosage ; adverse effects ; therapeutic use ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Male ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; drug therapy ; Remission Induction ; Treatment Outcome

Objective: To investigate the distribution of human papillomavirus (HPV) infection characteristics and genotypes in Shenyang area of Liaoning province. Methods: HPV genes were detected in cervical exfoliated cells from 55, 548 patients by amplification and diversion hybridization. Results: A total of 9, 566 patients were positive for HPV infection with a positive rate of 17.22%. Additionally, the positive rate of high risk HPV infection was 14.57% and the positive rate of single genotype HPV infection was 13.63%. Totally, 12, 360 HPV viruses were detected. Among them, 10, 879 HPV viruses were classified into high risk genotypes (10, 879 out of 12, 360, 88.02%). The genotypes in women with ages less than 20 were 16/11/6/51/58/52 genotypes; the susceptible HPV genotypes in other women were 16/58/52/53/39/51/81 genotypes. Conclusions HPV infections in Shenyang are mainly infections with high risk viruses and single infection. The infection rate and genotype distribution of HPV are different in different age groups. More suitable HPV vaccine prophylaxis can be taken according to the epidemic characteristics of HPV in this area.

Objective: To explore the allogeneic mouse adipose-derived mesenchymal stem cell (ADSC)-microporous sheep acellular dermal matrix (ADM) on healing of wound with full-thickness skin defect in mouse and the related mechanism. Methods: One Kunming mouse was sacrificed by cervical dislocation to collect adipose tissue from inguinal region. Mouse ADSCs were isolated from the adipose tissue and cultured in vitro. Cells of the third passage were identified by cell adipogenic and osteogenic differentiation. The expressions of CD73, CD90, CD105, and CD34 were analyzed by flow cytometry. After one sheep was sacrificed, microporous sheep ADM was prepared from sheep back using decellularization method and freezing-thawing method. A 12 mm diameter, round, full-thickness skin defect wound was made on the back of each one of 36 Kunming mice. The wounds were covered by microporous sheep ADM. The mice were divided into group ADSC and control (C) group with 18 mice in each group according to the random number table after surgery. A volume of 0.2 mL DMEM/F12 culture medium containing 1×10⁶ ADSCs was injected between microporous sheep ADM and wound of mice in group ADSC. While 0.2 mL DMEM/F12 culture medium was injected between microporous sheep ADM and wound of mice in group C. On post surgery day (PSD) 12 and 17, wound healing rates of mice in the 2 groups were calculated. On PSD 7, 12, and 17, wound vascularization of mice in the 2 groups was observed under reverse irradiation of backlight. On PSD 7, 12, and 17, the wound granulation tissue of mice in group ADSC was observed by hematoxylin and eosin staining. On PSD 7, the thicknesses of granulation tissue of mice in the 2 groups was measured. On PSD 12 and 17, expressions of VEGF in wounds of mice in the 2 groups were detected by immunohistochemical method. The sample number was 6 in each group at each time point in the above experiments. Data were processed with t test and analysis of variance of factorial design. Results: (1) After 7 days of adipogenic induction, lipid droplet was observed in cytoplasm using oil red O staining. After 21 days of osteogenic induction, black deposits of calcium salts were detected using silver nitrate staining. Expression rates of CD73, CD90, CD105, and CD34 in cells were 97.82%, 99.32%, 97.35%, and 5.88% respectively. The cells were identified as ADSCs. (2) The wound healing rates of mice in group ADSC on PSD 12 and 17 [(78±6)%, (98±3)%] were significantly higher than those in group C [(60±9)%, (90±4)%, t=4.26, 4.46, P<0.01]. (3) On PSD 7, no vessel obviously grew into the center of wounds of mice in the 2 groups, while the granulation tissue has covered the wounds of mice in group ADSC. On PSD 12, the vessels were more abundant in wounds of mice in group ADSC than those in group C. On PSD 17, big vessels crossing the whole wounds was observed in wounds of mice in group ADSC, while big vessels were observed without crossing the whole wounds in wounds of mice in group C. (4) The wounds were covered with thin granulation tissue on PSD 7, and the granulation tissue began to thicken on PSD 12 and were covered by epidermis on PSD 17 in wounds of mice in group ADSC. On PSD 7, the granulation tissue in wounds of mice in group ADSC [(0.62±0.05) mm] was significantly thicker than that in group C [ (0.31±0.04) mm, t=12.27, P<0.01]. (5) On PSD 12 and 17, expressions of VEGF in wounds of mice in group ADSC [(80.7±2.2), (0.98±0.03)/mm²] were significantly than those in group C [(59.5±2.4), (81.5±2.6)/mm^2, t=15.95, 14.14, P<0.01]. Conclusions Allogeneic mouse ADSC-microporous sheep ADM can accelerate angiogenesis and growth of granulation tissue, thus promoting wound healing, which may be due to the increase of expression of VEGF.

INTRODUCTIONUndergraduate evidence-based practice (EBP) is usually taught through standalone courses and workshops away from clinical practice. This study compared the effects of 2 clinically integrated educational strategies on final year medical students.

MATERIALS AND METHODSFinal year medical students rotating to the general medicine service for a 2-week internship were randomly assigned to participate in a weekly EBP-structured case conference focusing on students' primary care patients (Group A, n = 47), or to receive a weekly didactic lecture about EBP (Group B, n = 47). The teaching effects of these 2 interventions were evaluated by a validated instrument for assessment of EBP related knowledge (EBP-K), attitude (EBP-A), personal application (EBP-P), and anticipated future use (EBP-F) on the first and last days of rotation.

RESULTSAll scores improved significantly after the 2-week EBM-teaching for both groups. When compared to Group B, students in Group A had significantly higher post-intervention scores of EBP-K (21.2 ± 3.5 vs 19.0 ± 4.6; ie. 57.8 ± 72.9% vs 29.1 ± 39.1%; P <0.01) and EBP-P (18.7 ± 4.3 vs 15.3 ± 3.9; ie. 28.5 ± 25.5 % vs 14.1 ± 18.7 %; P <0.001). In contrast, the scores of EBP-A and EBP-F were similar between the 2 groups.

CONCLUSIONStructured case conference, when compared to the didactic lectures, significantly improved EBP-K and EBP-P for final year medical students.

Adult ; Education, Medical, Undergraduate ; Evidence-Based Medicine ; education ; Female ; Humans ; Male ; Surveys and Questionnaires ; Taiwan ; Teaching ; methods ; Young Adult

BACKGROUND:Stem cells have been widely used in the treatment of spinal cord injury,but the clinical application is limited by immune rejection,difficulty in cell harvesting and purification.However,human nasal mucosa mesenchymal stem cells (hNM-MSCs) have no such problems,and its clinical application in the treatment of spinal cord injury has been not reported yet.OBJECTIVE:To observe the biological characteristics of autologous hNM-MSCs and its clinical efficacy in the treatment of advanced incomplete spinal cord injury.METHODS:NM-MSCs were isolated from the human nasal mucosa,cultured and identified in vitro.The ultrastructure of NM-MSCs was observed by transmission electron microscope and scanning electron microscope.Then the NM-MSCs were induced to differentiate into osteocytes,adipocytes,stem cell spheres,or neurons in vitro.Totally eight patients with incomplete spinal cord injury were enrolled and subjected to hNM-MSCs transplantation via lumbar puncture for 1-3 sessions of about 5× 107 cells each,with an interval of 5-7 days,after the approval of the medical ethics committee.All the patients were followed up for 6 months.Preoperative and postoperative therapeutic effect evaluations were performed on the basis of American Spinal Injury Association (ASIA) scores.RESULTS AND CONCLUSION:Under light microscope,the NM-MSCs were mainly spindle-shaped,positive for STRO-1 and exhibited a radial arrangement.NM-MSCs highly expressed CD73,CD90 and CD105,but did not express CD34 and CD45,with the purity of over 97％.And lots of podgy microvilli were seen on the surface of NM-MSCs under the scanning electron microscope,and two kinds of cell morphologies were seen under the transmission electron microscope.Moreover,hNM-MSCs had the ability to differentiate into osteocytes,adipocytes,stem cell spheres and neurons.During the 6-month follow-up,seven patients achieved neurological function recovery to different extents except for one patient,and no side effects were found.It is concluded that hNM-MSCs can become the ideal seed cells for tissue-engineered cell repair.Autologous NM-MSCs transplantation for the treatment of spinal cord injury can achieve the ideal effect,with the value of clinical application.

BACKGROUND: Human olfactory mucosa mesenchymal stem cells (hOM-MSCs) not only have the basic characteristics of mesenchymal stem cells, but also originate from the ectoderm and are prone to differentiate into neurons, which are a kind of ideal seed cells for nerve repair and regeneration. Cells are conventionally cultured in about 21% in vitro, while only 3%-9% oxygen is found in the human body and tissue space. There is still no report on the effect of hypoxia on the proliferation and activity of hOM-MSCs.OBJECTIVE: To explore whether hypoxic microenvironment can promote hOM-MSCs proliferation and activity and the related mechanism. METHODS: hOM-MSCs were isolated, cultured and identified by flow cytometry and immunofluorescence. The passage 4 hOM-MSCs were divided into three groups: 21% O2 group, 3% O2 group and 3% O2+20 μmol/L YC-1 (HIF-1α inhibitors) group. Proliferation and apoptosis of hOM-MSCs was detected by flow cytometry after 72 hours of culture. The proliferating cell nuclear antigen protein expression was detected by western blot. The mRNA and protein expression of HIF-1α and TWIST were detected by Q-PCR and western blot. RESULTS AND CONCLUSION: The purity of hOM-MSCs was up to 97%, as defined by flow cytometry. The proliferation index of 3% O2 group was higher than the 21% O2 group (P < 0.05), and cell survival and apoptosis ratio (apoptotic cells included mechanical death + early apoptosis + late apoptosis) between the two groups had no significant difference (P > 0.05). Western blot results showed that the proliferating cell nuclear antigen protein expression in the 3% O2 group was significantly higher than that in the other groups (P < 0.05). The HIF-1α and TWIST expressions at mRNA and protein levels in the 3% O2 group were significantly higher than those in the other groups (P < 0.05). To conclude, hypoxic microenvironment can promote the hOM-MSCs proliferation and has no effect on the apoptosis, and the HIF-TWIST signal pathway plays an important role in this progress.

OBJECTIVETo investigate the prevalence of peripheral arterial disease (PAD) in China type 2 diabetic patients and to demonstrate the relationships between putative risk factors and PAD.

METHODSIn total 1,397 type 2 diabetic patients aged 50 years and older were enrolled and determined ankle-brachial index (ABI) and brachial-ankle pulse wave velocity (baPWV) in 15 Class III Grade A hospitals in 7 major cities of China.

RESULTSMean patient age was 63.7 +/- 8.2 years and mean duration of diabetes mellitus was 9.39 +/- 7.4 years. Two hundreds and seventy-two (19.47%) patients were diagnosed as PAD by ABI < 0.9, 122 (18.37%) in male and 150 (20.46%) in female. PAD patients had a significantly longer duration of diabetes mellitus, higher hemoglobin A1c, and a significantly lower mean body mass index than non-PAD ones. Aging, smoking, and systolic blood pressure were found to be positively related with the prevalence of PAD. In terms of lipid profiles, no variable was found to relate with PAD. Notably, baPWV showed as the same significant guiding index for PAD, almost matched with ABI.

CONCLUSIONSPAD is a common complication in China type 2 diabetic patients. Therefore, PAD screening and treatment should be emphasized for diabetic patients with high risk factors.

Aged ; China ; epidemiology ; Diabetic Angiopathies ; epidemiology ; Female ; Humans ; Male ; Middle Aged ; Peripheral Vascular Diseases ; epidemiology ; Prevalence ; Risk Factors ; Urban Population ; statistics & numerical data

The damage of sweat glands in patients with extensive deep burns results in the loss of thermoregulation, which seriously affects the quality of life of patients. At present, there are many researches on the repair of sweat gland function, but the mechanism of human sweat gland development has not been fully clarified. More and more studies have shown that the cascaded pathways of Wnt/β-catenin, ecto- dysplasin A/ectodysplasin A receptor/nuclear factor-κB, sonic hedgehog, and forkhead box transcription factor jointly affect the development of sweat glands, and it has been reported that the cascaded signaling pathways can be used to achieve the reconstruction of sweat adenoid cells in vitro. This article reviews the signaling pathways that affect the development of sweat glands and their involvement in the reconstruction of sweat adenoid cells in vitro.
Adenoids/metabolism* ; Hedgehog Proteins/metabolism* ; Humans ; Quality of Life ; Signal Transduction ; Sweat/metabolism* ; Sweat Glands/physiology*

ObjectiveTo explore the effect of Modified Dahuang Zhechong Granule (MDZG) on the development and maturation of epididymal sperm in experimental varicocele (VC) rats.

METHODSSixty SD male rats were randomly divided into six groups of equal number, sham operation, VC model, Aescuven forte, and low-, medium- and high-dose MDZG. The model of left VC was made by the Turner method in all the rats except those of the sham operation group, followed by treatment with 0.9% normal saline for the animals in the sham operation and VC model groups, Aescuven forte tablets at 54 mg per kg of the body weight for those in the Aescuven forte group, and MDZG at 0.6, 1.2 and 2.4 g/ml for those in the low-, medium- and high-dose MDZG groups, all administered intragastrically qd for 8 successive weeks. Then, all the rats were sacrificed and their left epididymides harvested for examination of the quality of the epididymal sperm and the local microscopic and ultrastructural changes of the epididymal tissue.

RESULTSThe VC model rats showed significant apoptosis of the epididymal sperm cells, interstitial edema, microvascular dilatation, degeneration and degeneration of the epithelial cells, degeneration of some principal cells and basal cell vacuoles, and immature spermatids in the lumen. Sperm motility was significantly increased in the Aescuven forte and low-, medium- and high-dose MDZG groups as compared with the VC models (P <0.01). Both sperm concentration and motility were markedly higher in the high-dose MDZG than in the Aescuven forte group (P <0.05). Remarkable apoptosis of epididymal sperm cells was observed in the microenvironment of sperm development in the VC models, which exhibited no statistically significant difference from that in the rats of the medium- and high-dose MDZG groups.

CONCLUSIONSExperimental varicocele induced local apoptosis of epididymal sperm cells, interstitial edema and microvascular dilatation in the rat epididymis, while Modified Dahuang Zhechong Granule could improve the stability of epididymal sperm maturation and contribute to their development.

Aesculus ; chemistry ; Animals ; Apoptosis ; Drugs, Chinese Herbal ; pharmacology ; Edema ; chemically induced ; Epididymis ; drug effects ; Male ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Sperm Count ; Sperm Motility ; drug effects ; Spermatozoa ; cytology ; drug effects ; Varicocele ; chemically induced ; drug therapy ; pathology