Adult ; Choroid Plexus Neoplasms ; pathology ; Diagnosis, Differential ; Ear Neoplasms ; pathology ; radiotherapy ; surgery ; Endolymphatic Sac ; pathology ; Glomus Jugulare Tumor ; pathology ; Humans ; Immunohistochemistry ; Magnetic Resonance Imaging ; Male ; Meningioma ; pathology ; Skull Neoplasms ; pathology ; radiotherapy ; surgery ; Temporal Bone ; pathology ; Tomography, X-Ray Computed

Ectopic human chorionic gonadotrophin (hCG) is an autocrine hormone expressed by most malignant tumor cells. Increasing data recently showed that the expression pattern and biological properties of ectopic hCG was significantly different from that of the normal hCG secreted by trophoblastic cells. Evidence from different research groups strongly indicated that there was a direct relationship between the expression of ectopic hCG and the development of malignant tumor. Ectopic hCG may play a key role in regulation of tumor growth,metastasis and immune tolerance versus malignant tumor. The advances in the research of the molecular biologic characteristics and functions of ectopic hCG are reviewed and evaluated. [

Although the symptom of stable bronchiectasis is not significant, the four pathological factors including qi stagnation, sputum obstruction, blood stasis and lung-spleen qi vacuity still exist inside patients' bodies, making them in the state of both healthy and ill. This article discussed the application of the idea of preventive treatment to intervene and treat, which could prevent the emergence of new diseases and the changing of existing diseases. It could prevent vacuity evil and bandit wind, depressed qi transforming into fire, phlegm depressed in the lung and channel obstruction caused by long-term diseases. It can effectively prevent the acute attack of bronchiectasis and improve the patients' lung function and life quality.

The paper discusses the difference in postgraduate training between China and the United States,intending to supply some advanced experiences for Chinese postgraduate education reform.

Through studying Marxism philosophy,medical graduate students can master scientific methodology and dialectic thought.This is helpful to analyze and comprehend rightly different kind of complicated issues and to improve cognition level and practice ability.It is also very important for medical graduate students to guide political education and moral cultivation,medical practice and science research.

Objective To investigate treatment effect of prednisone to withdrawal headache in patients with medication overuse headache (MOH). Methods From June 2009 to June 2013, 96 patients with MOH were chosen as study objective for the randomized double-blind and placebo controlled study.All patients were divided into 2 groups: 48 in study group ( treated with prednisone, 100 mg/d ) and 48 in control group (treated with placebo, 100 mg/d).The clinical features of two groups were compared.After treatment, the primary endpoints, secondary endpoints , further results and the use of analgesics were compared.Results Before treatment, the age, sex gender,primary diagnosis, duration and frequency of headache, medicine had no statistical difference between two group.After treatment, the duration of headache and the rate of drug rescue had no statistical difference between two groups.The rate of withdraw symptoms had no statistical difference between two groups.The use of analgesics was less in study group than that in control group, the difference had statistical significance (P<0.05).Conclusion During withdrawal in MOH, prednisone reduces rescue medication without decreasing the severity and duration of withdrawal headache.

Objective: To investigate the effect and mechanism of liraglutide on vasodilatation of thoracic aortic ring in experimental rats.
Methods: The thoracic aortic rings were isolated from 32 male SD rats and divided into 2 groups: Without endothelium group and With intact endothelium group, n=16 in each group. The contractile force of vascular ring was detected and the effect of liraglutide (1×10-5 mol/L) on vasodilatation of norepinephrine (NE, 1×10-6 mol/L) pre-contracted ring was observed. The aortic ring in With intact endothelium group was further divided into 2 sub-groups:①the aortic ring was pre-treated by the inhibitor of nitric oxide synthase (NOS) (L-NAME at 10-4 mol/L),② the aortic ring was pre-treated by non-specific ATP-sensitive-potassium (KATP) channel (Glibenclamide at 10-5 mol/L), n=8 in each group. The impacts of liraglutide on those 2 sub-groups were studied.
Results: Liraglutide had no effect on isolated aortic ring at basic condition. Liraglutide at (10-5 mol/L) had vasodilatation effect in both Without endothelium and With intact endothelium groups, the effect was stronger in With intact endothelium group and the maximum vasodilatation reached 17%, P<0.05. In both pre-treated sub-groups, the effect of liraglutide on vasodilatation in sub-group①reached 4%, P<0.05, and the effect in sub-group②
reached 14%, P>0.05.
Conclusion: Liraglutide had obvious effect of vasodilatation on NE pre-contracted thoracic aortic ring in experimental rats, the mechanism might be related to NOS, while KATP channel could not block the vasodilatation effect of liraglutide.

Objective To observe the effects of neuregulin‐1 (NRG‐1)on calcium transients in mouse ventricular myo‐cytes.Methods Nine C57BL/6 mice of male were randomly dived into 3 groups :the blank control group ,NRG‐1 group ,and iso‐proterenol(ISO)group.Their hearts were removed and immediately cannulated via the aorta and retrogradely perfused with en‐zymatic isolation solution to get single ventricular cell by Langendorff system.Myocytes were loaded with the Ca2+ indicator Fluo‐4 and subjected to electrical field stimulation at 0.5 or 1 Hz by using living cells workstation.The change of fluorescene in‐tensity was recorded simultaneously in each group.Results Compared with the blank control group ,NRG‐1 group had signifi‐cantly increased Ca2+ transient amplitude ΔF/F0 (n=10 ,P<0.05) ,and reduced Ca2+ transient recovery time RT50 (n=10 ,P<0.05).There were no significant differences in Ca2+ transient amplitude ,Ca2+ transient recovery time and the time to peak be‐tween NRG‐1 and ISO groups(n=10 ,P>0.05).Conclusion NRG‐1 can increase Ca2+ transient amplitude and Ca2+ transients and reduce the time interval of Ca2+ transients.

Bile dut injury (BDI) is one of the severe complications of laparoscopic cholecystectomy (LC).The classification,diagnosis and treatment of the BDI caused by LC are partly controversial.The most efficient classification of the BDI is Strasberg-Bismuth's classification and the three modes and four classes developed by the Biliary Surgery Group of Surgery Branch of Chinese Medical Association.Although the success rate of intraoperative diagnosis for the BDI is very low,in most cases,the BDI is diagnosed by clinical manifestations and assistant examinations.Accurate classification and early diagnosis could help us to make a specific one for each patient according to certain situation.In this review,we focus on the classification,diagnosis and treatment of the BDI caused by LC.

There is a regular pattern in the diagnosis and treatment of exogenous high-grade fever, of which the key point is formula syndrome identification. Syndrome differentiation of the six channels is appropriate for not only exogenous cold but also various other conditions. The diagnosis and treatment of high-grade fever can also follow the law of syndrome differentiation of the six channels. The theory of epidemic febrile diseases stems from and elaborates on an understanding of exogenous febrile conditions, so many effective formulas used to treat epidemic febrile diseases also have great value in the treatment of high-grade fever. Deteriorated syndrome, which is central to this condition, is very commonly seen in cases of high-grade fever, the key therapeutic principle of which is established according to syndromes. Allowing analysis that does not rigidly adhere to either established modern diagnosis or traditional Chinese syndromes, prominent achievements could be made in treating high-grade fever by summarizing the regular presenting patterns in terms of the constitution and symptoms.