Objective To clarify the morphological features, types, regional distributions and cell densities of gastrointestinal (GI) endocrine cells in various parts of the digestive track (DT) of Eumeces elegans. Methods Using immunohistochemical techniques of streptavidin-peroxidase(S-P) method. Results The endocrine cells found in the DT were round or oval, spindle, shuttle, pyramid, flask and bacilliform in shape. Three types of endocrine cells, namely 5-hydroxytryptamine (5-HT) positive cells, somatostatin (SS) positive cells and gastrin (GAS) positive cells were found. No substance P(SP)-, glucagon (GLU)-, pancreatic polypeptide ( PP)- and insulin(INS) positive cells were detected. 5-HT positive cells distributed throughout the whole DT at various densities and they were most predominant cell types in the DT. SS positive cells were detected only in stomach. GAS positive cells showed a restricted distribution and were only demonstrated in the pylorus and duodenum. In the DT of E. elegans the region with the highest degree of cell type heterogeneity was pylorus and all types of endocrine cell along the DT showed peak density in the pylorus as well. Conclusion Some common features of the distribution of different types of GI endocrine cells are found between E. elegans and other reptiles. This common trait may reflect the similarity in digestive physiology of various vertebrates. On the other hand, some species-dependent unique distribution features of endocrine cells in DT were also detected in E. elegans.

[ABSTRACT]OBJECTIVETo investigate the efficacy and the related complications of combinedpostauricular methylprednisolone injection and systemic therapy for profound idiopathic sudden hearing loss (ISSNHL). METHODSTotal of 60 patients with ISSNHLwho had received therapy from June 2014 to May 2015 in Beijing Anzhen Hospital affiliated to Capital University of Medical Science,were randomly divided into 2 groups,the systemic application group (30 patients): dexamethasone (DEX) was applied intravenously in dose of 10 mg×5 d, and the postauricular injection group (30 patients): methylprednisolone sodium suecinate was injected subperiosteally near the upper one-thirds of postauricular sulcus every day, 40 mg×5 d.All 60 patients received the same medications for 2 weeks to improve the hearing. Hearing and tympanic membrane were monitered before the injections and two weeks after the termination of injections. SPSS 16.0 software was used to analyze the data.RESULTSThe postauricular injection group: 23 of 30 ears had improvement of hearing. No related complications were reported. The systemic application group: 23 of 31 ears had improvement of hearing (P>0.05) No related complications were reported.CONCLUSIONCombined postauricular methylprednisolone injection and systemic medications therapy can be considered as is an effective therapy for profound idiopathic sudden hearing loss. It can avoid the side-effects of high dose systemic corticostemid treatment. For ISSNHL patients, postauricular methylprednisolone injection may be an appropriate treatment.

Objective To explore the principle,effect and method of percutaneous AiDi injection for treatment of implanted VX2 liver tumor with ultrasound guidance.Methods Twenty-eight New Zealand white rabbits with implanted VX2 liver tumors were randomly divided into 3 groups:AiDi injection group (n=12) ,percutaneous ethanol injection (PEI) group (n=8) ,and physiological saline group (n=8) .Two weeks after transplantation,the drugs were injected into tumors of all the rabbits once every 3 days.After 4 times injection,the rabbits were killed.The tumors were measured with 64-slice CT,while the rate of tumor necrosis,the volume of tumor and the growth rate of the tumor were calculated.Liver and kidney function tests (AST,ALT,ALP and BUN) as well as white blood eell counts were assessed before and after treatment,and CT examination was performed at the same time.The morphological and the ultramicrostructural changes were also investigated under light microscope or electron microscope.Results Tumors in all groups kept growing after the procedure.Among all 3 groups,tumor growing rate for AiDi injection group was the lowest and the necrotic rate was the highest (P＜0.05) ,while no significant difference was found between AiDi injection group and PEI group (P＞0.05) .Apoptotic index in AiDi injection group was significantly higher than that in PEI group and physiological saline group (P＜0.05) .There was no evident change of liver and kidney function before and after treatment in AiDi injection group and PEI group (P＞0.05) .Conclusion AiDi injection can induce apoptosis of liver VX2 tumor cells.Percutaneous AiDi injection therapy can obviously inhibit and destroy liver VX2 tumor cells.

Objective:To study the therapeutic effect of warming needle plus tuina for degenerative knee osteoarthritis.Method:Randomize 120 cases into a treatment group and a control group,60 cases in each group by the visiting sequence,and then apply warming needle plus tuina for the cases in the treatment group and articular cavity injection of Sodium Hyaluronate for the cases in the control group.Results:The total effective rates in the treatment group and control group were 93.3%and 83.3%respectively,showing a significant difference (P＜0.05).Conclusion:Warming needle plus tuina works well on degenerative knee osteoarthritis.

Objective To investigate the effects of nordihydroguaiaretic acid(NDGA), a general lipoxygenase inhibitor, on the proliferation and apoptosis of human prostate cancer PC-3 ceils and ex-plore the mechanism. Methods The cultured PC-3 ceils were exposured to NDGA at the different concentrations of 0 (control group), 20, 40, 80 and 160 μmol/L, respectively. The effect of NDGA on growth inhibition and apoptosis inducement were measured with morphometry, MTT and TUNEL as-say. The activity of caspase-3 was determinated with flow cytometry. Results The survival rate of PC-3 cell decreased significantly after treated with 40, 80, 160 μmol/L NDGA. The apoptosis indices of PC-3 cell dealt with 0, 20, 40, 80 and 160 μmol/L NDGA for 48 h were (2.9±0.2)%, (3.2±0.3)%, (68.5±0.8)%, (86.2±0.3)% and (86.9±0.6)%, respectively. When PC-3 cells were treated with 0, 20, 40, 80, 160 μmol/L NDGA for 48 h, the positive rates of activated caspase-3 were (3.9±0.0)%, (4.15±0.1)%, (55.5±0.8)%, (75.1±0.3)%, and (76.3±0.7)%, respectively. Compared with the control group, the apoptosis indices and positive rates of activated caspase-3 in the groups of 40, 80, and 160 μmol/L NDGA increased significantly(P<0.05). Conclusions NDGA can inhibit the growth and induce apoptosis of PC-3 cells. The mechanism may be related with intra-cellular activation of caspase-3.

Objective To explore therapeutic efficacy of endoscopic biliary stent placement in the management of bile leakage following hepatobiliary surgery.Methods 11 cases of bile leakage following hepatobiliary surgery were reviewed retrospectively from January 2001 to December 2005.New clinical classifications of bile leakage were proposed: type I,leakage from cystic duct;type II,leakage from extrahepatic bile duct(diameter of leakage less than 1/3 diameter of biliary duct was type IIA;more than 1/3 was type IIB);type III,leakage from intrahepatic bile duct(leakage from intrahepatic bile duct cecum was type IIIA;leakage from intrahepatic bile duct under draining hepatic segments was type IIIB;above draining hepatic segments was type IIIC);type IV,leakage from Luschka duct.Results In 11 cases,there were 6 cases of type I,2 cases of type IIA,1 case of type IIIA,and 2 cases of type IIIB.4 cases were placed only stents,and Oddi sphincterotomy combined with stent placement were performed in 7 cases.Stents were taken out at 3 weeks(6 cases),1 month(2 cases),2 weeks(1 case),6 months(1 case) and 9 months(1 case) postoperatively.Abdominal pain was relieved in 11 cases after endoscopic treatment,with disappearance of biliary drainage from abdominal cavity and subsidence of jaundice.1 case was followed up for 6 months,and other 10 cases were followed up for 1-3 years,with no recurrence of abdominal pain,fever,jaundice and seroperitoneum,and hemobilirubin became normal.Conclusions Endoscopic biliary stent placement is one of effective therapeutic procedures in the management of most bile leakage following hepatobiliary surgery.New classification of bile leakage may be taken as a guide to select therapeutic procedures.

Tooth eruption is a series of complicated physiological processes occurring once the crown is formed completely, as well as when the tooth moves toward the occasion plane. As such, the tooth moves through the alveolar bone and the oral mucosa until it finally reaches its functional position. Most studies indicate that the process of tooth eruption involves the alveolar bone, dental follicles, osteoclasts, osteoblasts, and multiple cytokines. Dental follicles regulate both resorption and formation of the alveolar bone, which is required for tooth eruption. Furthermore, root formation with periodontal ligament facilitates continuous tooth eruption. However, the exact mechanism underlying tooth eruption remains unclear. Hence, this review describes the recent research progress on the cellular and molecular mechanisms of tooth eruption.
Dental Sac ; Humans ; Osteoblasts ; Osteoclasts ; Periodontal Ligament ; Tooth ; Tooth Eruption ; physiology ; Tooth Root

Objective: By studying the pharmacokinetics in dogs' vivo of Gansu Capsule (sustained release), evaluate slow release effect in vivo of Gansu Capsule (sustained release). Methods: To take gallic acid as marker component, which is one of effective components, After taking Gansu Capsule (sustained release) and Gansu Capsule (common), to adopt high performance liquid chromatography to determinate the blood concentration of acid pyrogallol in dogs at different time. Results: Both Gansu capsule (sustained release) and Gansu Capsule (common) coincide one compartment model. It suggested that Gansu Capsule (sustained release) had remarkable effects of slow release and could maintain higher blood concentration in vivo longer the slow release effect of Gansu Capsule (sustained release) in vivo that could be evaluated by accumulative releasing percentage in vito. Conclusion: Gansu Capsule (sustained release) had good slow release effect in vivo and vitro.

OBJECTIVE To study the main bacteria and their drug-resistance of postoperative infections after liver transplantation.METHODS The distribution and drug-resistance profile of 156 strains of bacterial isolates from(various) specimens in 68 liver transplantation inpatients were retrospectively analyzed last year.RESULTS The(incidence) of infections after liver transplantation was 67.6 %.The major bacteria were Klebsilla pneumoniae((17.3%)),Staphylococcus aureus(14.1%),Candida albicans(11.0%),and Pseudomonas aeruginosa((11.0%)).The bacteria had the character of multidrug-resistance and high drug-resistance.The most effective(antibiotics) to Gram-negatives and Gram-positives were still the carbopenems and glycopeptide.CONCLUSIONS(Infection) is a major complication after liver transplantation.Prevention,early diagnosis and treatment of the(infection) are very important.

BACKGROUND: Clinical researches found that portal vein occlusion was beneficial to inhibit growth of hepatocarcinoma, promote compensatory hyperplasia of un-blocking hepatic tissue and decrease metastasis of portal vein occlusion; however, it should be fu~her proved by animal experiments.OBJECTIVE: To investigate models of portal vein occlusion of hepatic VX2 tumor in rabbits and evaluate value of multi-slice CT.DESIGN: Randomized grouping design and animal study.SETTING: Department of Radiology, Xinqiao Hospital of the Third Military Medical University of Chinese PLA.MATERIALS: The experiment was carried out in the Imaging Department of Xinqiao Hospital of the Third Military Medical University of Chinese PLA from July 2002 to January 2005. Forty New Zealand rabbits were divided according to digital table into 4 groups: immediate group (transplantation of tumor after immediate portal vein occlusion), 3-week group (transplantation of tumor at 3 weeks after portal vein occlusion), negative control group and positive control group, 10 in each group.METHODS: Hepatic VX2 tumor was transplanted with abdominal-embedding innoculation at immediate portal vein occlusion and 3 weeks after portal vein occlusion. Meanwhile, they were divided into negative control group (Left external branch of portal vein was done sham-operative block,and left exite was embedded and inoculated pseudoly) and positive control group (Transplanted tumor did not suffer from portal vein occlusion). All rabbits were scanned with multi-slice CT.MAIN OUTCOME MEASURES: General changes of liver, changes of tumor, metastasis of tumor, vascular-imaging displaying rate of multi-slice CT of hepatic artery and portal vein, blood flow of liver, blood volume,mean transit time, permeability of vascular surface and fraction of hepatic arterial infusion (HAI).RESULTS: All 40 animals were involved in the final analysis. ① Tumor did not grow in both immediate group and 3-week group. In 3-week group,left endite was atrophied and growth of tumor was inhibited. The maximal diameter of tumor was smaller than that in positive control group [(2.55 ±0.46), (3.59±0.37) cm, t=5.57, P ＜ 0.001]. Incidences of metastasis in liver and lung were lower in 3-week group than those in positive control group (10%, 40%; 100%, 90%); however, there was no significant difference. ② Scanning with multi-slice CT, displaying rate of branches hepatic artery was lower in grade Ⅲ than that in grade Ⅰ and Ⅱ (40%, 70%,100%, P ＜ 0.05); but there was no significant difference of displaying rate of portal vein at various grades (P ＞ 0.05). ③ Values of blood flow of liver,blood volume, mean transit time and permeability of vascular surface were lower in immediate group and 3-week group than those in control groups,but values of HAI were increased.CONCLUSION: Ligating left external branch of portal vein is an ideal way to establish models of portal vein occlusion of hepatic VX2 tumor in rabbits; furthermore, multi-slice CT plays a key role in evaluating effect of portal vein occlusion.