Objective To investigete the changes of neurons in cortex and hippocampus of spontaneously hypertensive rat.Methods Systolic pressure,diastolic pressure and mean arterial pressure,heart rate were measured by caudal artery manometry in six-month old SHR and age-matched Wistar rats(control group).Neurons in frontal lobe,parietal lobe,temporal lobe,and hippocampal CA1,CA3 sub-field and the dentate gyrus were observed through Nissl staining.Results Systolic pressure,diastolic pressure and mean arterial pressure in SHR were significantly higher than that in control group(P

Adolescent ; Adult ; Child ; Female ; Hematopoietic Stem Cell Transplantation ; adverse effects ; methods ; Humans ; Infection ; etiology ; therapy ; Lymphoma ; microbiology ; surgery ; Male ; Middle Aged ; Young Adult

Objective To observe the protective effect of sodium hyaluronate (Na-HA),and its effects on mRNA expression of peroxisome proliferators-activated receptor gamma (PPAR-γ) in cartilage of rabbit osteoarthritis (OA) model.Methods Forty eight white rabbits were divided into A,B,C groups randomly.Group A were normal controls,groups B and C were underwent unilateral anterior cruciate ligament transection (ACLT).The rabbits in group B were injected normal saline after ACLT;Group C rabbits received intra-articular 1% sodium hyaluronate (HA) injections 5 weeks after surgery,0.3 ml once a week.At week 11 after the surgery,all rabbits were sacrificed.The cartilage changes on the medial femoral condyles were graded.Cartilage sections were stained with safranin-O and HE,mRNA expression of PPAR-γ was detected by real time polymerase chain reaction (Real Time-PCR).Results Cartilage degeneration in group B was significantly more severe than in groups A and C.The grey value of Safranin-O of B group were higher than groups A and C.Expression of PPAR-γ mRNA in group B was higher than that in groups A and C.Conclusion NaHA has a protective effect on articular cartilage degeneration,and the inhibitory effect on PPAR-γ mRNA expression may be one of the therapeutic mechanism of Na-HA.

Objective:To investigate the effects of Porhyromonas endodontalis(P.e)liopolysaccharide(LPS)on the expression of IL-23mRNA and protein in mouse osteoblasts MC3T3-E1 and the role of phosphatidylinositol 3-Kinases (PI3K)signaling pathway in this process.Methods:MC3T3-E1 cells were treated with different concentrations of P.e LPS for different hours,or pretreated with LY294002,a special PI3K inhibitor.The IL-23 mRNA and protein expression levels were detected by real-time PCR and Western blot respectively.Results:The level of IL-23 mRNA increased in MC3T3-E1 cells with the increase of concentration and the treatment time of P.e LPS(P <0.05).The IL-23 protein expression was increased by P.e LPS in a time dependent manner(P <0.05).The mRNA and protein of IL-23 decreased(P <0.05)after pretreatment with LY294002.Conclusion:P.e LPS can induce the expression of IL-23 mRNA and protein in MC3T3-E1 cells,and the PI3K signaling pathway may play a part in this process.

AIM:To evaluate 23G vitrectomy for macular edema in eyes with retinal vein occlusion (RVO) combined with vitreoretinal traction (VMT) or epiretinal membrane (ERM).METHODS:Totally 22 patients (22 eyes) diagnosed with macular edema of RVO combined with VMT or ERM were retrospectively analyzed.Twelve cases performed with 23G vitrectomy together with peeling of inner limiting membrane (ILM) and/or ERM were considered as the observation group or intervention group.Ten cases without vitrectomy were recruited as control group.The best corrected visual acuity (BCVA) and central retinal thickness (CRT) at baseline, 1, 3 and 6mo were recorded and compared.RESULTS:At baseline, the difference of BCVA and CRT between observation group and control group was not statistically significant (P=0.645, 0.206).After vitrectomy, the BCVA and CRT of RVO patients in observation group were significantly improved compared with baseline at each follow-up (F=2.895, P=0.048;F=16.431, P<0.01).However, the BCVA and CRT in control group remained the same as baseline at every follow-up.Moreover, the BCVA and CRT in observation group were much better than that in control group at both 3 and 6mo after vitrectomy.However, the BCVA and CRT between two groups were not significantly different at 1mo postoperatively.CONCLUSION:The 23G vitrectomy could markedly improve BCVA and reduce CRT in RVO patients with macular edema combined with VMT and/or ERM.

Objective To investigate the relationship between low serum calcium concentration and hematoma volume in patients with intracerebral hemorrhage.Methods Between January 2012 and October 2014,870 consecutive patients with intracerebral hemorrhage admitted to the Department of Neurosurgery,West China Hospital,Sichuan University were enrolled prospectively.The patients completed laboratory serum calcium concentration and head CT examinations within 24 h after attack,and the baseline data and laboratory findings were collected.According to the normal reference value of laboratory serum calcium concentration,the patients were divided into a hypocalcemia calcium group (<2.1 mmol/L;n=193) and a normal calcium group (2.1-2.7 mmol/L;n=677).Spearman correlation analysis was used to analyze the correlation between the blood serum calcium concentration and the hematoma volume on admission.Results (1) The hypocalcemia group compared with normal calcium group,the proportion of male patients was high (73.6% [n=142] vs.66.0% [n=447]),the median score for Glasgow coma scale was lower (9 vs.11),and the median hematoma volume was larger (33.86 cm3 vs.21.69 cm3).The differences were statistically significant (all P<0.05).(2) Spearman correlation analysis showed that the lower serum calcium level on admission was weakly negatively correlated with the volume of hematoma in patients with intracerebral hemorrhage (r=-0.113,P<0.01).Conclusion The study suggested that the hypocalcemia on admission was mostly males in patients with intracerebral hemorrhage,the condition was serious,the volume of hematoma was larger,and the lower serum calcium concentration was negatively correlated with the hematoma volume.

AIM: To evaluate visual acuity outcomes after phacoemulsification and intraocular lens implantation in patients with wet age-related macular degeneration (wAMD).METHODS: We reviewed the medical documents of the patients who underwent phacoemulsification and intraocular lens implantation surgery during June 2013 and January 2016.Totally 61 eyes of 48 patients with wAMD in the stable stage were recruited.The pre-and post-operative vision of selected cases were recorded and compared.RESULTS: After phacoemulsification and intralocular lens implantation, visual acuity changes were as follows: 49 eyes improved, 11 eyes retained, and 1 eye deteriorated.Visual acuity improvement after cataract surger were statistically significant (P<0.001).Visual acuity improvement was not related to age.CONCLUSION: Visual acuity improved in patients with wet AMD after phacoemulcification and intraocular lens implantation.

Objective To summarize the experiences in using Bio-Gide and Bio-Oss for guided bone regener- ation in dental implantation.Methods In 28 cases of bone deficiency,Bio-Gide membranes were applied to cover alveolar defects filled with the Bio-Oss bone powder.In postoperative periodic follow-.up,the bone regeneration effect was observed by successive clinical and X-ray examination.Results 38 implants were inserted in the 28 patients and Bio-Gide membranes were used in the sites of the 38 implants.Alveolar bone defects were filled with new bone in 27 patients,1 implant loosed because of inflammation.37 implants had ideal osseointegration at stageⅡsurgery and were prosthetic rcconstructed successfully.No implant loosed during the observed period of 15 months to 4 years. Conclusion Bio-Gide and Bio-Oss have ideal effect of guided bone regeneration in dental implantation.

Objective To compare maternal and neonatal outcomes after induction,elective cesarean section and spontaneous onset of labor in uncomplicated term nulliparous women.Methods A total of 3751 uncomplicated term nullipara who delivered in Peking Union Medical College Hospital from Sept 2002 to April 2007 were retrospectively analyzed.They were divided into three groups:the induction group, the elective cesarean section group,and the spontaneous onset of labor group.Their general conditions (such as age,weeks of pregnancy,hospital days and cost),postpartum complications(such as postpartum hemorrhage,puerperal morbidity,urinary retention,blood transfusion,delayed healing,and trauma),and Apgar score were compared by statistic methods.Results(1)Among 3751 women,501(13.3%)of them underwent induction(the induction group),1634(43.6%)delivered by cesarean section(cesarean section group),the other 1616(43.1%)women underwent spontaneous onset of labor(the spontaneous onset of labor group).(2)Results of general conditions:the spontaneous onset of labor group had the shortest hospital days,which was longer in the induction group,and the longest in the selective cesarean section group(P

Objective To compare the normal anatomy of the anterior cruciate ligament (ACL) of fresh frozen cadaveric knee specimen in oblique coronal thin-slice section with oblique coronal magnetic resonance imaging. Methods One fresh cadaveric knee specimen was scanned with MR T1-weighted spinecho sequence.then the specimen was frozen and sliced with a band saw along the oblique coronal plane into 1.0-mm-thick sections that corresponded to the MR images,MR images including oblique coronal T1-weighted and T2-weighted images of 50 normal the knee joints were retrospectively reviewed to observe the MR imaging features of the cruciate ligament. Results Anteromedial and posterolateral bundles of ACL were clearly depicted on both anatomic slices and MR images.The anteromedial bundles originated from the posteromedial aspect of the lateral femoral condyle,coursing through the lateral intercondylar notch in an anterior,inferior,and medial direction,and inserted on the anteromedial aspect of the intercondylar eminence. The posterolateral bundles originated from the anteromedial aspect of the lateral femoral condyle,passing laterally and inferiorly through the lateral intercondylar notch,and inserted on the posterolateral side of the intercondylar eminence.The full length of ACL of all 50 individuals was showed on MR images.MRI clearly differenitated the anteromedial and posterolateral bundles of ACL and depicted the full length of the bundles.similar to the findings on sectional anatomy.Conclusion Oblique coronal MR imaging is the best way to demonstrate ACL and should be used for clinically suspected injury of ACL.