Mesenchymal stem cells (MSCs) are a group of stem cells derived from mesodermal mesenchyme.They can be recovered from a variety of tissues,including bone marrow,umbilical cord tissue,umbilical cord blood,peripheral blood,and adipose tissue.Under given conditions,MSCs can differentiate into bone,fat,nerve cells,bepatocytes,and many other cells.Thus,MSCs can be used as a new treatment to substitute for organ transplantation.In recent years,the incidence of end-stage liver disease has been increasing and liver disease has become one of the major diseases affecting human health.Donor scarcity and immunological rejection limit the clinical application of liver transplantation.Numerous studies have confirmed the therapeutic effects of MSCs on hepatic fibrosis,cirrhosis,and other liver diseases,which may be related to the differentiation of MSCs into functional hepatocytes.This paper reviews the capacity,regulation,and molecular mechanism of MSC differentiation,and it discusses the therapeutic effects of different sources of stem cells for liver fibrosis.

Objective To investigate the influence of different doses of flurbiprofen axetil on neurological behavior in CCI rats.Methods All SD rats were randomly assigned to 3 groups:control group(C group),operation but without CCI,n=5;CCI group,without injection,n=5;flurbiprofen axetil (FA) group,different doses of flurbiprofen axetil were intraperitoneally administered every 12 hours for 7 days beginning on postoperative 6 hours in CCI rats (FA1 group:2mg/kg,FA2 group:4mg/kg,FA3 group:8mg/kg,FA4 group:16mg/kg),5 rats in each subgroup.The thermal withdrawal latency(TWL) and mechanical withdrawal threshold(MWT) were tested on preoperative 1,3,5 and 7 days and postoperative 1,3,5 and 7 days.Results Firstly,compared with C group[TWL:(12.396±1.144)s;MWT:(12.801±0.494)g],the TWL and MWT of CCI and FA groups[TWL:(5.645±1.144)s,(5.901±0.914)s,(6.300±0.835)s,(7.631±0.597)s,(7.894±0.526)s;MWT:(5.14±0.71)g,(5.28±0.60)g,(6.74±0.50)g,(6.74±0.25)g,(6.70±0.42)g]were significantly declined after surgery (tTWL=26.973,31.047,31.176,30.373,30.772;tMWT=44.192,48.132,51.136,54.326,46.937,all P<0.05),and the TWL and MWT of FA groups significantly improved with the doses from 2mg/kg to 16mg/kg of flurbiprofen axetil[TWL:the minimum (5.030±0.240)s,the maximum (8.300±0.430)s;MWT:the minimum (4.56±0.14)g,the maximum (7.11±0.20)g].Secondly,there were no statistically significant differences in TWL and MWT between CCI group and FA1 group(all P>0.05).However,the TWL and MWT of FA2 group,FA3 group and FA4 group[TWL:(6.300±0.835)s,(7.631±0.597)s,(7.894±0.526)s;MWT:(6.74±0.50)g,(6.74±0.25)g,(6.70±0.42)g] increased significantly compared with CCI group(tTWL=-3.768,-11.569,-13.867,tMWT=-3.898,-15.233,-14.801,all P<0.05).Thirdly,there were no statistically significant differences in TWL and MWT between FA3 group and FA4 group (all P>0.05).Conclusion Over 4mg/kg of flurbiprofen axetil can significantly reduce the thermal hyperalgesia and mechanical allodynia in CCI rats,however,there is a ceiling effect of flurbiprofen axetil,and the dosage of 8mg/kg can provide a maximum analgesic effect.

With the development of magnetic resonance (MR) technology, the concern is focused on molecular and physiological imaging besides structural information. Ultra high field MR scanner shows great superiority. 3. 0-T MR scanners provide almost two-fold signal-to-noise ratio (SNR) compared with a standard 1. 5-T MR scanner. The higher baseline SNR can be converted into a variety of alternative benefits. There are still some other changes brought about by 3. 0-T, such as higher sensitivity to motion, susceptibility effect, more difference in resonant frequency among different metabolites, and so on. These features may be a double-edged sword in structural and functional imaging. But with the ceaseless progress of the technology and gains in experience, 3. 0-T systems will provide more information and show more advantages.
Animals ; Humans ; Image Enhancement ; methods ; Magnetic Resonance Imaging ; instrumentation ; methods ; Magnetic Resonance Spectroscopy ; instrumentation ; Sensitivity and Specificity

Environmental Health ; Occupational Health ; Social Responsibility

Environmental Pollution ; prevention & control ; Metals, Heavy

Chronic Periodontitis ; diagnosis ; diagnostic imaging ; therapy ; Dental Scaling ; Follow-Up Studies ; Furcation Defects ; diagnosis ; diagnostic imaging ; therapy ; Gingival Hyperplasia ; diagnosis ; diagnostic imaging ; therapy ; Humans ; Male ; Middle Aged ; Periodontal Index ; Radiography, Panoramic ; Root Canal Therapy ; Tooth Loss ; diagnosis ; diagnostic imaging ; therapy ; Tooth, Artificial

Objective To study the clinical features of cardiac arrest patients and the influence factors of effective resuscitation. Methods The clinical data of 76 patients in our hospital who underwent cardiac arrest and resuscitation were analyzed retrospectively. Results The effective resuscitation were observed in forty-seven patients (47/76, 61.8%), 28 patients completely survived(28/76,36.8%), and the total death rate was 63.2%. The successful rate of resuscitation was positive relation to the starting time of resuscitation, the way of cardiac arrest, and the structure and function of heart, but was negative relation to the times of cardioversion. The successful rate of resuscitation had indefinite relation with the patients age and gender. Conclusion The immediate cardioversion was the key factor of successful resuscitation.The successful resuscitation was dependent on the continuous and effective cardio-press. Basical cardio-disease was the major factor affecting prognosis.

目的观察中药与手法结合治疗腰椎间盘突出症的疗效。方法对66例腰椎间盘突出症患者采用中药与手法结合治疗,2个月后观察其疗效。结果中药与手法治疗的总有效率为86.37%。结论中药与手法结合治疗腰椎间盘突出症可获得满意疗效,且疗程1个月内疗效最为明显。

OBJECTIVETo summarize and analyze the cone-beam CT (CBCT) imaging features of ameloblastomas for clinical preoperative diagnosis.

METHODSThirty-seven cases with complete data proven by pathology were retrospectively studied for distinct CBCT features.

RESULTSOf the 37 cases, 31 were primary and 6 were recurrent. On CBCT images, the 37 cases were composed of 36 cases (97.3%) of intraosseous lesions (17 cases of multilocular lesions, 17 cases of unilocular lesions, and 2 cases of honeycomb lesion) and 1 case (2.7%) of extraosseous lesion (soft tissue lesion). Of the 17 multilocular cases, 15 (88.2%) showed tongue-shaped crests in lesions. Thirty-four cases (94.4%) showed apparent expansible change toward lip/buccal and (or) palatal/lingual sides ofjaw, with partialcortical erosion.

CONCLUSIONCBCT imaging yields accurate three-dimensional images of lesion shape and structure. Therefore, CBCT can be usedfor the clinical diagnosis and surgical assessment of ameloblastoma.

Ameloblastoma ; Cone-Beam Computed Tomography ; Humans ; Jaw Neoplasms ; Retrospective Studies

OBJECTIVETo study clinical efficacy of smoothing Gan reinforcing Shen (SGRS) method in treating poor response of diminished ovarian reserve (DOR) patients in in vitro fertilization and embryo, transfer (IVF-ET).

METHODSTotally 84 DOR patients undergoing IVF-ET were assigned to the experimental group (SGRS Chinese herbs as adjuvant therapy) and the control group according to random digit table, 42 in each group. Patients in the control group received controlled ovarian hyperstimulation (COH) and IVF-ET. Those in the experimental group additionally received basic formula of SGRS method, one dose per day. The dose and use time of recombinant follicle-stimulating hormone (r-FSH) were recorded during ovarian stimulation process. On the injection day of human chorionic gonadotropin (HCG) and serum levels of estradiol (E2) on the oocyte retrieval day were determined using chemiluminescent method. E2 contents in the follicular fluid on the oocyte retrieval day were detected using ELISA. The total number of retrieved oocytes, the number of mature oocytes in metaphase II (M II), the number of normal fertilization [with two pronucleus (2PN)], the number of portable embryos, and the number of good quality embryos were recorded. The correlation between Chinese medical adjuvant therapy and the aforesaid indices were observed. The clinical pregnancy rate and the abortion rate were finally compared between the two groups.

RESULTSThe total dose of r-FSH, the E2 level on HCG injection day, the serum E2 level on the oocyte retrieval day, the number of retrieved oocyte, the number of oocytes in M II the number of oocytes with 2PN, the number of portable embryos, and the number of good quality embryos were all positively correlated with Chinese medical adjuvant therapy (P < 0.05, P < 0.01). Compared with the control group, serum E2 levels on the HCG injection day and the oocyte retrieval day obviously increased, the number of retrieved oocytes, the number of oocytes in M II, and the number of portable embryos were increased more in the experimental group with statistical difference (P < 0.05, P < 0.01). There was no statistical significance in the clinical pregnancy rate or the abortion rate between the two groups (P > 0.05).

CONCLUSIONSGRS Chinese herbs as adjuvant therapy could improve ovarian responsiveness of DOR patients undergoing IVF-ET, increase the number of retrieved oocytes, elevate the quality of oocytes and the number of embryos.

Adjuvants, Pharmaceutic ; therapeutic use ; Chorionic Gonadotropin ; Drugs, Chinese Herbal ; therapeutic use ; Embryo Transfer ; methods ; Estradiol ; Female ; Fertilization in Vitro ; methods ; Follicle Stimulating Hormone ; metabolism ; therapeutic use ; Follicular Fluid ; Humans ; Medicine, Chinese Traditional ; Oocyte Retrieval ; Oocytes ; Ovarian Hyperstimulation Syndrome ; Ovulation Induction ; Pregnancy ; Pregnancy Rate