Objective:To observe the position of the third molar in the neolithic adults about 6 000 years ago.Methods:On the basis of the maxillary and mandibular specimens preserved in Banpo museum,200 maxillary and mandibular specimens with 383 third molars,187 maxillary and 196 mandibular,were observed for the eruption of the third molar.The teeth in the non-eruption group were further divided into impact group and congenital absent group according to the third molar germ presence testified by X ray.Results:The congenital absent rates of maxillary and mandibular third molar were 26.74% and 17.35%,while the impact rates of maxillary and mandibular third molar were(2.67%) and 14.79% respectively.Conclusion:Both the congenital absent rate and the impact rate of the third molar in neolithic era adults are lower than those in modern,the impact and congenital absence of the third molar are part of degradation of masticatory organ with whole humanity progressing.

OBJECTIVETo discuss the operative techniques of endoscopic endonasal transsphenoidal surgery and perioperative management for treatment of acute pituitar y apoplexy (PA).METHODS A retrospective analysis was conducted on the clinical data of 51 pathologically diagnosed acute PA after transsphenoidal endoscopic endonasal resection at the TianJin HuanHu hospital between January 2000 and December 2013. There were 28 males and 23 females,with median age of 47 and disease course of 4h-7d.The typical clinical manifestations included headache, visual interference and pituitary dysfunction. CT scan, MRI scan and endocrinological examinations were performed in all cases before operation. Glucocorticoids were used during perioperatve period, The postoperation symptoms and the results follow-up visit after operation were recorded. RESULTS The tumors were totally removed in 42 cases and sub-totally removed in 9 cases without operative death and serious complications. The follow-up period was 1 year to 14 years. Of 47 patients with headaches before the operation, all patients were resolved after the operation; In 38 patients with sight disturbance before the operation,the sight was recovered very well in 34 patients after the operation. The visual field was recovered very well in all patients. Of 28 patients with endocrine disturbance before the operation, 22 were improved in endocrine symptom after the operation. No patient recurred.CONCLUSION The endoscopic endonasal transsphenoidal operation is safe and effective for treatment of acute PA.Appropriate perioperative management is important for the success of operation.

Objective To analyze the efficacy and safety of pramipexole in treating restless legs syndrome (RLS) to different races.Methods A search for randomized,double-blind,and placebocontrolled clinical trials of pramipexole in treating RLS using Pubmed was carried out.A meta-analysis of included clinical trials was performed with Revman 5.2.The efficacy was calculated based on the change of the weighted mean difference (WMD) with International Restless Legs Syndrome Study Group rating scale (IRLS) and the relative risk (RR) of response with Clinical Global Impression-Improvement (CGI-I) scale.Safety was assessed with RR of the adverse event (AE).Subgroup analysis was conducted in the white race subgroup and the yellow race subgroup,separately.Results A total of 6 clinical trials were included in this meta-analysis.The records of patients were pooled.Overall,WMD of the change in IRLS score was-4.72 (Z =6.57,P ＜ 0.01),which was-4.33 in white race subgroup (Z =3.90,P ＜ 0.01) and-4.52 (Z =42.28,P ＜0.01) in yellow race subgroup.Overall RR of response based on CGI-I was 1.64 (Z =10.39,P ＜0.01),which was 1.60 (Z =4.66,P ＜0.01) in white race subgroup,and 1.51 (Z =4.42,P ＜ 0.01) in yellow race subgroup.Overall RR for AE was 1.26 (Z =5.11,P ＜ 0.01),which was 1.26 (Z =2.27,P =0.02) in white race subgroup and 1.36 (Z =2.98,P =0.003) in yellow race subgroup.Conclusion To treat RLS,pramipexole is an effective and safe drug.The results are similar for both the white race and the yellow race.

Objective:To investigate the clinical and diagnostic characteristics of audiometric findings and vestibular-evoked myogenic potentials in patients with large vestibular aqueduct syndrome (LVAS).Method:Thirty LVAS subjects(60 ears) recruited received pure tone audiometry, acoustic immittance, auditory brain stem responses (ABRs), distortion-product otoacoustic emission(DPOAE), Vestibular evoked myogenic potentials(VEMP) and caloric test, and the diagnostic significance of the results was analyzed.Result:All 30 cases(60 ears) showed progressive and fluctuating hearing loss, while 16 cases experienced dizziness when hearing fluctuated. Most of our cases showed sensorineural hearing loss, and 47 ears(94.0%) showed air-bone gap in the low frequencies, with mean gaps of (43±17)dB HL at 250 Hz, (33±18 )dB HL at 500 Hz, in which the middle ear function showed normal. The acoustically evoked short latency negative response(ASNR) with medium latency(3.06±0.52)ms was elicited from 18 ears(64.3%). The mean amplitude of vestibular evoked myogenic potentials(VEMP) of 42 ears was (147.10± 107.55)μv,and the threshold of VEMP of 19 ears was 75 dB nHL,of 7 ears was 65 dB nHL.Conclusion:Characteristics of hearing performance, such as progressive and fluctuating hearing loss, air-bone gap at the low frequencies with normal middle ears, the ASNR, and increased amplitude and decreased threshold of the VEMPs, will help clinicians make initial diagnosis of LVAS ,and provide a reference for further imaging examination.

Objective: To investigate the effectiveness and adverse effects of Cyberknife stereotactic body radiotherapy (SBRT) on liver metastases from PCa. METHODS: From June 2009 to September 2016, we treated 20 cases of PCa liver metastases by Cyberknife SBRT, at a total dose of 36 (30－50) Gy, on 1－3 liver metastatic lesions, for 3－5 times, with a prescription isodose line of 70－92%. We assessed the therapeutic effect according to the modified Response Evaluation Criteria in Solid Tumors (mRECIST), calculated the survival and disease-control rates using the Kaplan-Meier method, and analyzed the adverse events based on the National Cancer Institute Common Terminology Criteria for Adverse Events－Version 4.0 (CTCAE 4.0). RESULTS: Of all the cases treated, complete response (CR) was found in 8 (40.0%), partial response (PR) in 9 (45.0%), stable disease (SD) in 2 (10.0%), and progressive disease (PD) in 1 (5.0%), with a local control rate (CR+PR) of 85.0% and a disease-control rate (CR+PR+SD) of 95.0%. Among the 14 patients with elevated PSA, 10 (71.4%) showed a significant decrease after treatment. The median follow-up time was 17 months, the 1- and 2-year survival rates were 85.0% and 15.0%, respectively, and the median survival time of the 20 patients was 16.5 months (95% CI: 12.12－22.88). Cyberknife SBRT was well tolerated in all the patients, with only a few mild adverse events (mainly grades 1 and 2 but no 4 and 5) during the whole course of treatment. CONCLUSIONS Cyberknife SBRT is safe and effective in the treatment of PCa liver metastases, with a high local control rate, and capable of reducing the PSA level and raising the long-term survival rate of the patients.

BackgroundThe increasing frequency of explosive injuries has increased interest in blast-induced traumatic brain injury (bTBI). Various shock tube models have been used to study bTBI. Mild-to-moderate explosions are often overlooked because of the slow onset or mildness of the symptoms. However, heavy gas cylinders and large volume chambers in the model may increase the complexity and danger. This study sought to design a modified model to explore the effect of moderate explosion on brain injury in mice.

MethodsPathology scoring system (PSS) was used to distinguish the graded intensity by the modified model. A total of 160 mice were randomly divided into control, sham, and bTBI groups with different time points. The clinical features, imaging features, neurobehavior, and neuropathology were detected after moderate explosion. One-way analysis of variance followed by Fisher's least significant difference posttest or Dunnett's t 3-test was performed for data analyses.

ResultsPSS of mild, moderate, and severe explosion was 13.4 ± 2.2, 32.6 ± 2.7 (t = 13.92, P < 0.001; vs. mild group), and 56.6 ± 2.8 (t = 31.37, P < 0.001; vs. mild group), respectively. After moderate explosion, mice showed varied symptoms of malaise, anorexia, incontinence, apnea, or seizure. After bTBI, brain edema reached the highest peak at day 3 (82.5% ± 2.1% vs. 73.8% ± 0.6%, t = 7.76, P < 0.001), while the most serious neurological outcomes occurred at day 1 (Y-maze: 8.25 ± 2.36 vs. 20.00 ± 4.55, t = -4.59, P = 0.048; 29.58% ± 2.84% vs. 49.09% ± 11.63%, t = -3.08, P = 0.008; neurologic severity score: 2.50 ± 0.58 vs. 0.00 ± 0.00, t = 8.65, P = 0.016). We also found that apoptotic neurons (52.76% ± 1.99% vs. 1.30% ± 0.11%, t = 57.20, P < 0.001) and gliosis (2.98 ± 0.24 vs. 1.00 ± 0.00, t = 14.42, P = 0.021) in the frontal were significantly higher at day 3 post-bTBI than sham bTBI.

ConclusionsWe provide a reliable, reproducible bTBI model in mice that can produce a graded explosive waveform similar to the free-field shock wave in a controlled laboratory environment. Moderate explosion can trigger mild-to-moderate blast damage of the brain.

OBJECTIVE: To investigate the audiological characteristics in unilateral auditory neuropathy (UAN). METHOD: By the retrospective studies, 11 patients which were diagnosed as UAN and bilateral auditory neuropathy (AN) group and control group were measured. RESULT: By the statistical studies of patients from otology clinic data from January 2001 to September 2006,11 patients (11 ear, 5 left ear and 6 right ear, 3.2%) in 340 AN patients diagnosed as UAN were summarized. Four patient were male and 7 were female in 11 patients (1: 1.75). The average age of 11 patients was 20 years old and the average period of diseases was 3.1 years. All patients complained of unilateral gradual hearing loss, and 6 patients in all UAN patients can't discriminate speech correctly. Four patients complained of tinnitus and none of UAN patients complained of dizziness. The pure tone audiograms of 5 patients in all UAN patients (45.4%) were descending curve and those of 4 patients (36.4%) were ascending curve. Eleven patients mostly showed severity degree or midrange degree (6 ear, 54.5%) sensorineural hearing loss. The average pure tone threshold of UAN was obviously higher than the AN group and the speech hearing of UAN is obviously worse, and ABR of all patients was absent, while uninjured side of UAN was normal. Bilateral ears of UAN patients were evoked distortion products otoacoustic emissions. The amplitude of DP-gram and SNR in UAN group was lower obviously (P < 0.05) than the normal control group at all frequencies (0.5-8.0 kHz) and was lower significantly (P < 0.01) at flat and high-frequency, but was lower obviously (P < 0.01) than the AN group at low-frequency. The contralateral suppression effect of DPOAE amplitude in 4 UAN patients of normal ears was suppressed, and that in injured ears was reduced or disappeared, even 0.5 kHz increased DPOAE amplitude. ENG and VEMP were observed in 5 UAN patients, and 1 patients shows semicircular canal failure and 1 patients shows paralysis unilateral. The VEMP of them showed no response in 1 (2 ear) of 5 and showed response in 4 of 5, but the amplitudes of VEMP were lower in 2 UAN patients. CONCLUSION The UAN patients mostly showed ascending curve and ponderosity degree sensorineural hearing loss. The diagnosis of UAN is different from other common sensorineural deafness. The detection of DPOAE and ABR has great significance in diagnosing the UAN.
Adolescent ; Adult ; Audiometry, Pure-Tone ; Auditory Threshold ; Case-Control Studies ; Child ; Child, Preschool ; Evoked Potentials, Auditory, Brain Stem ; Female ; Hearing Loss, Central ; diagnosis ; physiopathology ; Hearing Loss, Unilateral ; diagnosis ; physiopathology ; Humans ; Male ; Retrospective Studies ; Young Adult

In this article, the authors firstly summarized the number of applications submitted to and projects supported by the National Natural Science Foundation of China (NSFC) in the field of traditional Chinese medicine research in 2010. Then they described the district distribution, research direction layout and allotment of the approved projects in the three primary disciplines (traditional Chinese medicine, Chinese materia medica and integrated traditional Chinese and Western medicine) and their 43 subdisciplines. The targeting suggestions for improvement were given respectively by concluding the reason of disapproved projects from the point of view of applicants and supporting institution, and by stating the common problems existing in the review process from the perspectives of fund managers and evaluation experts. Lastly, the major funding fields in the near future were predicted in the hope of providing guidance for applicants.

Objective To evalute the feasibility of treatment for rabbit model with hepatic cirrhosis by transplantation of autologous bone marrow-derived stem cells via the hepatic artery and evaluate the effect of hepatocyte growth-promoting factors (pHGF) in the treatment of stem cells transplantation to liver cirrhosis.To provide empirical study foundation for future clinical application.Methods Chronic hepatic cirrhosis models of rabbits were developed by subcutaneous injection with 50% CCl4 0.2 ml/kg.Twenty-five model rabbits were randomly divided into three experimental groups,stem cells transplant group (10),stem ceils transplant + pHGF group (10) and control group (5).Autologous bone marrow was harvested from tibia of each rabbit,and stem cells were disassociated using density gradient centrifugation and transplanted into liver via the hepatic artery under fluoroscopic guidance.In the stem cells transplant + pHGF group,the hepatocyte growth-promoting factor was given via intravenous injection with 2 mg/kg every other day for 20 days.Liver function tests were monitored at 4,8,12 weeks intervals and histopathologic examinations were performed at 12 weeks following transplantation.The data were analyzed using analysis of variance Results Following transplantation of stem cells,the liver function of rabbits improved gradually.Twelve weeks after transplantation,the activity of ALT and AST decreased from (73.0±10,6)U/L and(152.4± 22.8) U/L to (48.0±1.0)U/L and(86.7±2.1)U/L respectively; and the level of ALB and PTA increased from (27.5 ±1.8)g/L and 28.3% to (33.2 +0.5)g/L and 44.1% respectively.The changes did not have statistically significant difference when compared to the control group(P >0.05).However,in the stern cellstransplant + pHGF group,the activity of ALT and AST decreased to (43.3±0.6)U/L and (78.7±4.0)U/L respectively and the level of ALB and PTA increased to (35.7 ±0.4)g/L and 50.5% respectively.The difference was statistically significant when compared to the control group(F=47.38,23.52,52.27,174.45,P < 0.05).In pathohistology,the degeneration and necrosis of hepatic cells and the degree of fibrous hyperplasia in stem cells transplant group were less obvious than that of the control group.Hepatic pseudo-lobules persisted.The improvement of liver architecture in the stem cells transplant + pHGF group was more evident than that in stem cells transplant only group.In addition,there were more hepatic CD34 <'+> cells within liver tissue in the stem cells trasplant group when compared to the control group,and the most hepatic CD34<'+> cells were seen in the stem cells transplant + pHGF group.Conclusion Autologous bone marrow stem cells transplanted via the hepatic artery for the rabbit hepatic cirrhosis model is an effective method to treat hepatic cirrhosis.The hepatoeyte growth-promoting factor can help to enhance the results of treatment.

Objective: To explore the relationship among somatostatin (SS), neuron-specific enolase (NSE) and early vascular dementia.Methods: A total of 40 patients with early vascular dementia treated in our hospital were selected as vascular dementia group, another 40 inpatients with cerebral infarction (CI) treated during the same period were enrolled as CI group.Plasma NSE and SS levels were compared between two groups during different periods.Results: Compared with CI group at onset, one month and three months after CI, there was significant rise in plasma NSE level[(22.08±7.05) ng/ml vs.(26.39±6.80) ng/ml, (23.92±4.25) ng/ml vs.(28.12±4.06) ng/ml, (25.55±4.72) ng/ml vs.(30.10±4.33) ng/ml], and significant reduction in plasma SS level[(1084.50±133.00) ng/ml vs.(748.30±129.10) ng/ml, (836.40±160.20) ng/ml vs.(624.25±140.50) ng/ml, (690.25±146.30) ng/ml vs.(432.70±151.00) ng/ml]in vascular dementia group, P<0.05 or <0.01.Plasma NSE level gradually rose and SS level gradually reduced along with the time went by(P<0.05 or <0.01).Conclusion: Early dynamic detection of somatostatin and neuron-specific enolase levels in patients with cerebral infarction may help to early diagnosing and treatment of vascular dementia.