Objective To study the MRI manifestations of hemangioblastomas.Methods MRI data of 27 cases of hemangioblastomasproved by surgery and pathology were analyzed retrospectively.Results Hemangioblastomas were often located in hemispherium of cerebellum.All cases could be divided into three types : cyst-nodule type cyst-solid type and purely solid mass type.The large cyst and small nodule sign were characteristic manifestations of the cyst-nodule type,the signals of the fluid of the cyst were higher than that ofcerebrospinal fluid on MRI.The nodules or solid potions of the mass were showed as equal or slight long T_1 and slight long T_2 signalintensity,and were obviously enhanced.The blood vessel flow-void-sign around and inside the solid parts of the masses could be seen,and had a close relation with surrounding meninges.Conclusion MRI is a effective method in diagnosing hemangioblastomas,but the atypical cases should be differentiated from cystic astrocytoma,meningioma and metastesis.

Objective To investigate the effect of continuous renal replacement therapy (CRRT) on the function of monocyte in patients with severe acute renal failure (ARF).Methods The function of monocyte in 42 patients with ARF accepting CRRT was dynamically observed and compared with that of healthy people.Results Cytokine secreting function of monocyte in patients with ARF was stronger than that in healthy people[TNF-α:(1 212.61 ±107.43) vs (857.34 ±83.45) ng/L,IL-6:(2 518.22 ±228.22) vs (1 948.13 ±218.23) ng/L,IL-8:(416.18 ±54.46) vs (229.31 ± 39.83) ng/L] (t =6.47,7.09,6.45,all P ＜ 0.05) 48 h after CRRT,cytokine secreting function declined to normal.Conclusion CRRT corrects the disorder of cytokine secreting function of monocyte in patients with ARF,decreases the inflammation response.

Objective To observe the influence of Xuefuzhuyutang and Erchentang on bulbar conjunctival microcirculation in experimental atherosclerosis rabbits and distinguish the differences of the two recipes. Methods 28 rabbits were randomly divided into 4 groups (control group, hypercholesterol group, Erchentang group, Xuefuzhuyutang group). The models were developed by fed high cholesterol diet, the changes of bulbar conjunctival microcirculation were detected at 10 weeks. Results Xuefuzhuyutang decreased the score values of the capsular dilatation, the diameter of microvein, the red blood cell aggregation (P

Neurofibromas are benign nerve sheath tumors that arise from the nonmyelinating Schwann cells. Generally, neurofibromas can be categorized into dermal and plexiform subtypes. The former subtype is usually associated with a lone peripheral nerve in the integumentary system, while plexiform tumors are associated with many nerve bundles and can originate internally. Rarely, the plexiform tumors can undergo malignant transformation. Neurofibromas are usually found in individuals with neurofibromatosis, which is an autosomal dominant disease. On occasion, an isolated neurofibroma can transpire without being associated with neurofibromatosis. Mostly, these solitary tumors tend to occur in the gastrointestinal system, and neurofibromas of the head and neck are not uncommon, but very rarely they have been reported to occur in the temporal fossa. In this report, we describe a case of a solitary neurofibroma arising from the temporal fossa.
Female ; Humans ; Middle Aged ; Neurofibroma ; Skull Base Neoplasms

Objective To observe and compare the effects of four kinds of anesthetic methods on the revival time,the rate of re-dormant after revival,the total Ketamine's doses and the respiratory status after extubation,and to improve the safety of anesthesia.Method 80 cases of children with palatorrphy were randomly divided into 4 groups: group A(n=20) given Midazolam and Ketamine,group B(n=20) given Fentanyl and Ketamine,group C(n=20) given Isoflurane and Ketamine,and group D(n=20) given Sevoflurane and Ketamine.Results(1) The revival time in group D and group C shortened(D and C

Objective To establish HPLC characteristic chromatogram ofKanglao Qingfei Granules.Methods HPLC analysis of samples was performed on Kromasil C18 column (4.6 mm × 250 mm, 5μm), with acetonitrile-1% glacial acetic acid as the mobile phase of gradient elution (0-50 min, 5%→15% acetonitrile;50-70 min, 15%→25% acetonitrile;70-80 min, 25%→40% acetonitrile;80-90 min, 40%→65% acetonitrile, 90-120 min, 65%→95% acetonitrile);the volume flow rate was 1.0 mL/min;detection wavelength was set at 290 nm;column temperature was 30℃. Chromatographic peaks were identified by HPLC-MS/MS method.Results The similarity degrees of 10 batches of samples were all greater than 0.995, and 13 chromatographic peaks were determined as common characteristic peaks, of which 10 peaks were confirmed in the source attribution and 8 peaks were identified in chemical component.Conclusion The established HPLC characteristic chromatogram can be used for the quality control ofKanglao Qingfei Granules.

AIM:To explore the relationship and molecular mechanism between microRNA-21(miR-21) and Schwann cells ( SC) following peripheral nerve injury.METHODS: The mRNA expression of miR-21 and phosphatase and tensin homologue deleted on chromosome ten ( PTEN) in animal model were detected by real-time PCR.The over-ex-pression of miR-21 and inhibition of miR-21 expression in the Schwann cells according to transfection of lentiviral vectors were performed, the nonspecific miRNA was used as a negative control ( NC) .The cell apoptosis was measured by flow cy-tometry.The mRNA expression of miR-21 and PTEN in the cells was detected by real-time PCR.The protein expression of PTEN and cleaved caspase-3 was determined by Western blot.RESULTS: The level of miR-21 was significantly higher and the mRNA level of PTEN was significantly lower in the model of nerve injury than those in control group.miR-21 over-expression decreased the number of apoptotic Schwann cells compared with NC-SC.The mRNA expression of PTEN was down-regulated by over-expression of miR-21.The protein expression of PTEN and cleaved caspase-3 was down-regulated by over-expression of miR-21 (P<0.05).CONCLUSION: miR-21 may play an important role in the peripheral nerve injury through inhibiting apoptosis of Schwann cells by down-regulating the expression of PTEN.

AIM: To investigate the molecular mechanism of microRNA-21 (miR-21) in the regulation of Schwann cell proliferation following nerve injury.METHODS:The expression of miR-2l was detected by real-time PCR. Synthetic miR-21 mimic and its control were transfected into rat Schwann cells.CCK-8 assay was performed to evaluate the influence of miR-21 on the proliferation of Schwann cells.The cell cycle distribution was determined by flow cytometry. The expression of transforming growth factorβ-induced protein ( TGFBI) and cyclin D1 were detected by Western blotting. RESULTS:The expression of miR-21 in model group was 7.87 ±0.75 and 7.75 ±0.80 times higher than that in sham operation group and blank group respectively.After transfected with miR-21 mimic, the expression of miR-21 in experimen-tal group was 2.21 ±0.14 and 2.29 ±0.21 times higher than that in negative control group and blank group respectively. Moreover, the A450 value of CCK-8 assay in experimental group at 48 h was higher than that in negative control group and blank group.The proliferation index in experimental group was higher than that in negative control group and blank group. At the same time, the expression of TGFBI obviously decreased and the cyclin D1 increased in the Schwann cells 48 h after transfection with miR-21.CONCLUSION:miR-21 promotes the proliferation activity of Schwann cells by down-regulating TGFBI expression.

Objective: To investigate the expression of heat shock response protein(HSP_ 70 ) in human squamous tongue cancer Tca8113 cells during the recovery periods of heat shock.Methods:Tca8113 cells were subjected to heat shock at 43 ℃ for 30 min, then the cells were cultured for 2,4,6,8,12,24 and 48 h respectively. The expression of HSP_ 70 in the cells was examined with immunohistochemical method, Quantitative analysis was performed by FCM and the cell vitality was detected by MTT method.Results:Heat shock induced HSP_ 70 expression in Tca8113 cells at 43 ℃ for 30 min and the maximum proportion of the positive cells were observed and HSP_ 70 reached the maximum value at 12 h after heat shock(P

Carotid Artery, Internal ; pathology ; Humans ; Oropharynx ; pathology ; Pharyngeal Diseases ; diagnosis