Acoustic Stimulation ; Evoked Potentials, Auditory, Brain Stem ; Humans ; Speech

Objective:To observe the effects of toadpoison and arsenic on the ultrastructure of dental pulp,Methods :Dental pulp of 36 teeth in 3 dogs was exposed by operation and then direct dressing with toadpoison paste or arsenic paste was performed. 1,2,6 and 24 hours after operation ,the pulps were processed and examinedunder a trasmission electron microscope (JEM-2000EX). Results:In toadpoison treated group ,the deformityof the basernembrane of pulp nerve ,swelling of metochondrion,degeneration of nerve axite were observed 1 h after dressing,and were more obvious in 2, 6 and 24 h. Damage of capillary and pulp cells were alsoobserved.In arsenic treated group ,swelling and break of capillaries ,deformity and degeneration of mitochondrion and endoplasmic reticulum in endoepithelial cells were observed,and were more obvious following time lasting. Damages of pulp nerve and pulp cells were also observed. Conclusion:Toadpoison and arsenic are toxic to pulp tissues. But the angiotoxicity of arsenic is stronger than that of toadpoison,the neurotoxicity and protoplasmic toxicity of toadpoison are stronger than those of arsenic.

Objective To investigate the therapeutic effects and mechanisms of propofol on acute necrotizing pancreatitis (SAP) in rats.Methods 54 male Sprague-Dawley rats were randomized into three groups with 18 rats in each group:sham-operation group,ANP group,propofol-treatod group.After ANP models were induced,propofol(10 mg·kg~(-1)· h~(-1)) were injected by dorsal vein of penis in the propofoltreated group.The rats in all groups were sacrificed at 3,6,12 hours after induction of the model.The serum amylase,lipase,nitric oxide (NO),TNF-a,superoxide dismutase (SOD),IL-6 were detected;the histopathological score of pancreatic tissue were evaluated.Results At 6 h,the levels of serum amylase in sham-operation group,ANP group,propofol-treatod group were(1743± 370) U/L,(7745± 1030) U/L and (5529± 874) U/L;the levels of serum lipase were(274.9± 36.1)U/L,(1672± 262)U/L and(1219± 207 )U/L;the levels of serum TNF-a were (1.110± 0.276)mg/L,(3.191± 0.279)mg/L and (2.361±0.281 )mg/L;the levels of serum IL-6 were (102.6±28.5)ng/L,(334.1±34.0)ng/L and (268.6±29.8)ng/L;the levels of serum NO were (42.2±18.1)μmol/L,(120.7±22.3)μmol/L and(73.6±19.3)μmol/L;the levels of serum SOD were(120.6± 20.1)U/ml,(54.1± 15.3)U/ml and(85.7± 17,1)U/ml;the histopathological scores were 0.333± 0.408,4.417± 0.665 and 3.500±0.707.The serum levels of amylase,lipase,NO,TNF-a,IL-6 and the histopathological score of pancreas in ANP group were significantly higher than those in sham-operation group group(P＜0.05 ),while the serum levels of SOD were significantly lower(P＜0.05).The serum levels of amylase,lipase,NO,TNF-a,IL-6 and the histopathological score of pancreas in propofol-treated group were significantly lower than those in the ANP group(P＜0.05),while the serum levels of SOD were significantly higher(P＜0.05).Conclusions Propofol could decrease the levels of serum amylase and lipase,reduce pancreatic tissue damage,and had therapeutic effects on ANP in rats.

OBJECTIVETo investigate the reconstruction of 1/4 defect on upper-lip vermilion with a lower-lip vermilion compound tissue flap pedicled at oral commissure.

METHORDSAt the first stage, the lower lip mucosal flap pedicled by inferior labial artery was transposed to reconstruct the defect on upper lip vermilion and tubercle. The defect at the donor site was closed directly. At the second stage, the flap pedicle was cut off and revised.

RESULTS6 patients were treated with satisfactory aesthetic results. All the flaps survived completely. The oral commissure kept normal with no obvious scar at the donor sites.

CONCLUSIONSThe modified crosslip vermilion flap pedicled at oral commissure has the advantages of avoiding inconvenience in feeding, speaking and cleaning. The procedure is simple with available blood supply. Both aesthetic and functional results are satisfactory.

Arteries ; Esthetics ; Humans ; Lip ; surgery ; Mouth Mucosa ; transplantation ; Surgical Flaps ; blood supply ; Transplant Donor Site ; surgery

Objective To investigate the effects of paeonol on renin-angiotensin system (RAS) occurred on the development of ventricular remodeling after acute myocardial infarction (AMI) in rats. Methods The left anterior descending coronary artery was ligated to establish the model of AMI in male SD rats. Six groups were set up:sham-operation group, AMI model group, captopril control group, paeonol low dose group (6 mg/kg), paeonol middle dose group (9 mg/kg) and paeonol high dose group (12 mg/kg). Rats were given treatment for 4 weeks after the AMI model was established. HE staining was used to observe changes of myocardial tissue. Real-time PCR was used to detect the mRNA levels of angiotensinogen (AGT), angiotensin Ⅱ receptor type1(AGTR1) and endothelin (ET)-1 of six groups. Western blot assay was used to detect the protein levels of peptidyl-dipeptidase A (ACE), angiotensin Ⅱ(Ang)-Ⅱand AGTR1 in six groups. Results The transcription of AGT, AGTR1, ET-1mRNA and the expressions of ACE, Ang-Ⅱ and AGTR1 protein were significantly higher in myocardial tissue of AMI rats than those of sham-operation rats (P＜0.05). Compared with model group, the expressions of AGT, AGTR1, ET-1mRNA and ACE, Ang-Ⅱ, AGTR1 protein were significantly decreased in paeonol high dose group and captopril control group (P＜0.05). Paeonol reduced the expressions of those mRNA and protein levels in a significant dose dependent manner. Conclusion Paeonol can slow down the deterioration of the ventricular remodeling after AMI in rats, which may be related to the inhibition of over-activation of RAS.

Objective To prepare the recombinant epitopes of HSV-gB and HSV-gD protein and provides a new antigen protein for the development of herpes simplex virus(HSV)vaccine.Methods The epitopes of HSV-gB and HSV-gD protein were analyzed by epitope prediction software.A novel gene named X which encoded 9 predicted epitopes of HSV-Gb and HSV-gD protein was designed and synthesized using chemical method.X gene was cloned into vector PET-28a(+),expressed in Escherichia cob' BL21(DE3),and analyzed by Western blot.Results X gene was successfully designed and expressed in Escherichia coli BL21(DE3).Western blot analysis showed that recombinant X protein,which was with His marker,can be detected by anti-His antibody.Conclusion In this study we establish a newmethod to express recombinant epitope protein,which may be a new protein for developing vaccine against HSV infection.

The impact factors were explored to determine the horizontal positional relationship between the umbilicus and the 2nd lumbar spinal process in adults and to verify the accuracy of the localization of Shenshu (BL 23) via the umbilicus. The position of the umbilicus and the 2nd lumbar spinal process was measured in 100 participants and the data were analyzed through SPSS 20.0 software. It was found that the umbilicus and the 2nd lumbar process were not positioned horizontally. The positional relationship of these two sites was not apparently correlated with gender, age, body weight, body height, BMI, waistline and discomfort of lumbar region. The umbilicus was commonly and posteriorly projected on the site between the 4th and 5th lumbar vertebra. It is explained that the localization of Shenshu (BL23) via the umbilicus is not accurate.
Acupuncture Points ; Adolescent ; Adult ; Female ; Humans ; Lumbosacral Region ; anatomy & histology ; Male ; Meridians ; Middle Aged ; Umbilicus ; anatomy & histology ; Young Adult

Objective To investigate the expression levels of somatostatin (SST) gene in endometrial adenocarcinoma tissues and cell lines,and the effects of over-expression of SST gene on the proliferation and invasion of endometrial cancer cell line Ishikawa in vitro.Methods Tissue sections of normal endometrium,endometrioid adenocarcinoma and uterine papillary serous carcinoma were selected to detect the expressions of SST by immunohistochemical method.The total RNA was extracted from fresh specimens that were confirmed as endometrioid adenocarcinoma.According to FIGO staging,samples included G1 (7 cases),G2 (6 cases) and G3 (5 cases) of endometrioid adenocarcinoma.The SST expression levels were detected by real-time PCR.Three endometrial cancer cell lines,Ishikawa,HEC-1A and KLE,were selected and the expression levels of SST were detected by real-time PCR and Western blot assay.Transfection was performed with pLVX-SST and pLVX.The transfection efficiency was observed by fluorescence confocal microscopy.The protein levels of SST were detected by Western blot assay.The assays of CCK-8 and transwell were applied to examine variations in cell proliferation and invasion.Results Immunohistochemical results showed that SST expression was increased in endometrioid adenocarcinoma and uterine papillary serous carcinoma compared with that of normal endometrium.Real-time PCR showed that SST expression was significantly increased in G3 compared with that of G1 and G2 in endometrioid adenocarcinoma (P ＜ 0.05).No matter mRNA or protein,SST levels were significantly increased in endometrial cancer cell line KLE compared with those of Ishikawa and HEC-1A,and the expression levels of SST mRNA and protein were significantly increased in HEC-1A group than those of Ishikawa group (P＜0.05).The expression of SST protein was significantly higher in the group of Ish-SST after 2 generations compared with that of Ish-ctr group.There were no significant differences in cell proliferation and invasive ability after over-expression of SST between Ishikawa cell group and control group (P ＞ 0.05).Conclusion SST is highly expressed in poorly differentiated endometrial cancer cells.The proliferation and invasion are not increased after the over-expression of SST in Ishikawa cell line of endometrial cancer.

Objective To investigate the correlation between XRCC1 R280H,XRCCl TSS+29C/T genetic polymorphisma and susceptibility to non-Hodgkin lymphoma (NHL). Methods The MassARRAY method was applied to detect the DNA repair gene XRCC1 genetic polymorphisms in 73 cases of NHL and 540 cases of normal healthy controls. Chi-square test was performed to calculate the adjusted odds ratios (OR) and 95% confidence intervals (CI). Results For XRCCl R280H genotypes, there was a significant difference between frequencies of the G and A among patients and controls (P=0.001). However, XRCCl TSS+29C/T genotypes had no statistical difference as for the T and C frequencies between patients and controls (P = 0.383). The frequency of XRCCI R280H with at least one A genotype was lower in the NHL cases than in controls, indicating a decreased risk for NHL development (OR=0.309, 95 % CI =0.168-0.567), comparing with GG genotype. In XRCC1 TSS+29C/T genotypes, the frequeney of TC and CC genotype was higher in NHL cases than in controls and associated with an increased risk of NHL development (P=0.472, OR =1.262, 95 % CI =0.669-2.379). Conclusion DNA repair XRCCl gene possesses significant correlation with NHL.

Tumor microenvironment (TME) plays a key role in the development and progression of tumors, such as pro?moting local drug resistance, immune escape, and distal metastasis. According to the TME of different individuals, accurate evaluation and selection of clinical medication can effectively control the malignant transformation of carcinoma in situ and metastatic cancer. At present, the main method to treat cancer is chemotherapy, TME can regulate the reaction of the tumor cells to the standard chemotherapy and target drug therapy, so the combination of the targeted TME therapy and chemothera?py will achieve better clinical efficacy. In this review, we summarized the mechanisms of TME in breast cancer, including ex?tracellular matrix, carcinoma-associated fibroblasts, carcinoma-associated macrophages, regulatory T cells and bone marrow mesenchymal stem cells, which providing a theoretical basis for the development of TME targeted therapy.