OBJECTIVE: To summary the application of new types of nanoparticles carriers emerged in recent years in drug or gene delivery. METHODS: By sorting, analyzing and summarizing domestic and foreign literatures, the characteristics, in vivo and in vitro properties and the applications in pharmacy of novel nanoparticles carriers such as nano cochleates, virus-like particles, hydrogel nanoparticles, gold nanoshells, carbon nanomaterials, quantum dots and dendrimers were reviewed and elaborated. RESULTS AND CONCLUSION: Nanoparticles possess special physical and chemical properties which could improve the stability and bioavailability of drugs and have a targeting and sustained release effect.

Objective To analyze the influence of different types of seizures and nonepileptic events on peripheral white blood cell (WBC)counts. Methods We prospectively collected blood samples from all patients and detered WBC count to evaluate the relation of each type of seizure,duration,frequencies,and ttme lapse between a seizure and collection of blood sample to peripheral WBC count. Results Peripheral WBC count was elevated in about 50% cases after a generalized seizure. The length of a seizures was positively associated, whereas its frequencies and the lapse time was negatively correlated with the increase in WBC counts. Conclusion Peripheral WBC counts increase significantly after a generalized seizure.

Objective To study the clinical significance of recognizing Zuckerkandl tubercle (ZT) during thyroid surgery. Methods One hundred and sixty-one patients (218 sides) having underwent thyroid lobectomy or thyroidectomy were retrospectively analyzed. The presence of ZT, the position and size of ZT, and the relationship between ZT and recurrent laryngeal nerve (RLN), superior parathyroid (SP) were observed. Results In 218 sides, 179 sides (82.1%) found ZT, with right side in 93 cases and left side in 86 cases. The main relationship between ZT and RLN was A type, accounting for 90.5%(162/179). There were no statistical differences in ZT grade and the relationship type between ZT and RLN between left side and right side (P>0.05). There was negative correlation in ZT grade and the relationship type between ZT and RLN (r=-0.269, P<0.01). In right side, 92.3%(72/78) of SP located on the top of ZT at 10-11 o′clock position;in left side, 94.6%(70/74) of SP located on the top of ZT at 1-2 o′clock position. Conclusions ZT is an important anatomical mark in the thyroid surgery, which helps to identify and protect the RLN and SP, so as to reduce surgical complications.

Objective To explore central lymph node metastasis (CLNM) of cN0 papillary thyroid carcinoma(PTC).Methods We evaluate the clinical data of 245 patients with cN0 unilateral TPC undergoing total thyroidectomy and bilateral central lymph node dissection.Results Central lymph node metastasis of cN0 TPC was 36.8％ (91/245),significantly related to gender(x2 =5.626,P =0.018),age (x2 =6.255,P =0.012),tumor size (x2 =20.063,P ＜ 0.001) and capsule invasion (x2 =15.024,P ＜ 0.001).The central lymph node metastasis was 51.7％ (60/116) in 116 patients with tumor size ＞ 1 cm,and the contralateral CLNM was 22.4％ (26/116) which was related to capsule invasion (x2 =9.737,P =0.002) and delphian LNM(x2 =10.982,P =0.001) There were 6 cases (2.4％) suffering from temporary unilateral recurrent laryngeal nerve injury.96 cases (39.2％) suffered from temporary hypoparathyroidism and 3 cases (1.2％) from permanent hypoparathyroidism.The median follow-up time was 40 months.6 cases were found regional lymph node recurrence on the ipsilateral side.Tumor size ＞ 1 cm was significantly related with recurrence (P =0.008),as CLNM with higher recurrence rate (P =0.001).Conclusions CLNM is common in cN0 PTC patients,and central lymph node metastases increase the risk of recurrence.Prophylactic bilateral central lymph node dissection is suggested for tumor size ＞ 1 cm cases.

Nowadays,stem cells are recognized as the most promising seed cells of tissue engineering due to their self replication ability and multilineage differentiation potential.In order to apply them to tissue engineering,a variety of physical and biochemical methods were tried to promote the proliferation,function and differentiation,and good effects were achieved.Recently,as a rising method of physical stimulation,electrical stimulation received more and more attention and had been proved to have good effects on stem cell proliferation and differentiation.This paper summarized the advances in promoting effects of electrical stimulation on stem cell proliferation and differentiation,and discussed the possible mechanisms of stem cell differentiation induced by electrical stimulation.

Lyotropic liquid crystal(LLC) is generally a kind of micelle association formed by self-assembly of amphiphilic lipid polymers in polar solvents. It have been applied in the study of drug delivery of administration of oral, skin injection, ocular, and cavity channel routes(including buccal cavity, nasal cavity, vagina), et al. Medical liquid crystal mainly includes lamellar phase, inverse hexagonal phase and inverse cubic phase. Inner assembling order in different structures of liquid crystals will affect the drug localization, viscosity, molecular interactions, and further drug release in vitro and in vivo, pharmacokinetics and so on. Thus, it is very important to characterize their microstructures. In this article, the characterization methods of LLC microstructures are comprehensively described based on the research of LLC as drug delivery carrier and related literatures, which can provide reference for further study of LLC drug delivery system.

Objective - （ ） To explore the influence on the diagnosis of occupational noise induced deafness ONID using three ， Methods versions of diagnostic criteria in 2002 2007 and 2014. A total of 1 766 workers who asked for ONID diagnosis were selected as the research subjects using judgment sampling method. The results of pure tone audiometry were collected. GBZ 49-2002Diagnostic Criteria of Occupational Noise-inducedHearing Loss（ The ONID was diagnosed using hereinafter referred to as GBZ 49-2002），GBZ 49-2007Diagnostic Criteria of Occupational Noise-induced Deafness（ GBZ 49-2007） hereinafter referred to as GBZ 49-2014 Diagnostic of Occupational Noise-induced Deafness（ GBZ 49-2014）， and hereinafter referred to as and the Results - - ， - diagnostic results were compared. Compared with GBZ 49 2002 and GBZ 49 2007 diagnosis with GBZ 49 2014 had （ vs ， vs ， P ）， （ vs ， a higher rate of ONID 57.9% 66.0% 44.8% 66.0% both <0.01 and had a higher rate of mild ONID 47.3% 54.6% vs ， P ） - - 36.0% 54.6% both <0.01 . The diagnostic rate for ONID using GBZ 492014 was higher than those using GBZ 49 2002 and - （ P ）Conclusion - GBZ 49 2007 in each age groups all <0.01 . GBZ 49 2014 improved the diagnostic rate of ONID compared - - with GBZ 49 2002 and GBZ 49 2007. The reason is related to the inclusion of 4 000 Hz hearing threshold with a weight of 0.1 - as the diagnostic hearing threshold and the use of a new age and gender correction method in GBZ 49 2014.

Objective To study the relationship of the university students' procrastination and big five personality factors.Methods 461 university students were assessed by the simple edition of tuckman procrastination scale(TPS) and the big five personality inventory short form(NEO-FFI).Results TPS score of the student was (48.51 ± 7.66).There were 89.4% students respectively had different level of procrastination behavior.There were no significant differences in university students by the gender(47.95 ±7.84 vs 48.95 ± 7.43 ) ,whether one-child students(48.64 ± 7.49 vs 48.45 ± 7.81 ) and grades.There were significant positive correlation between procrastination and the personality factor of neuroticism( r=0.235, P＜0.01 ) and significant negative correlation with extraversion ( r=-0.180, P ＜ 0.01 ) and conscientiousness ( r =-0.198, P ＜ 0.01 ).The big five personality factors of neuroticism,extraversion and conscientiousness could explain the 14.0% variation of procrastination of university students.Conclusion Procrastination is a very common phenomenon in the university students.The students with higher neuroticism, lower extraversion and conscientiousness of big five personality have more procrastination behavior.

Objective To evaluate the effect of dexmedetomidine on acute kidney injury after cardiac valve replacement with cardiopulmonary bypass (CPB).Methods One hundred patients of both sexes with rheumatic heart disease,aged 32-64 yr,weighing 46-75 kg,of American Society of Anesthesiologists physical status Ⅱ or Ⅲ (New York Heart Association class Ⅱ or Ⅲ),scheduled for elective cardiac valve replacement with CPB,were divided into 2 groups (n =50 each) using a random number table:control group (group C) and dexmedetomidine group (group D).Dexmedetomidine was intravenously infused in a loading dose of 1 μg/kg over 10 min before induction of anesthesia followed by an infusion of 0.4 μg · kg-1 · h-1 until 24 h after operation in group D,while the equal volume of normal saline was given in group C.The urine output per hour during the postoperative 48 h period was recorded.At 6,12,24,36 and 48 h after operation,blood samples were collected from the median cubital vein for determination of serum creatinine levels.The development and severity of acute kidney injury were determined according to the urine output and serum creatinine level.Results Compared with group C,the incidence and severity of acute kidney injury were significantly decreased in the postoperative 48 h period in group D (P＜0.05).Conclusion Dexmedetomidine infused in a loading dose of 1 μg/kg over 10 min before induction of anesthesia followed by an infusion of 0.4 μg · kg-1 · h-1 until 24 h after operation can reduce the development and severity of acute kidney injury after cardiac valve replacement with CPB in patients.

Objective To investigate the protective effect of sevoflurane on the brain against focal ischemia-reperfusion(I/R)injury and its mechanism.Methods Twenty-four male SD rats weighing 250-300 g were randomly allocated into 3 groups(n=8 each):group Ⅰ sham operation;grouop Ⅱ I/R and group Ⅲ I/R + sevoflurane.The rats were anesthetized with intraperitoneal chloral hydrate 300 mg?kg~(-1).Middle cerebral artery occlusion(MCAO)was produced by insertion of a 4-0 mono-filament nylon thread with rounded tip at bifurcation of right common carotid artery into internal carotid artery.The nylon thread was advanced cranially until resistance was felt.The depth of insertion was 18-20 mm.After 3 h MCAO the thread was withdrawn to allow reperfusion.In group Ⅲ the animals inhaled 1.0 MAC sevoflurane for 30 min at 30 min before reperfusion.The rectal temperature of the animals was kept at 36.5-37.5℃.At the end of 24 h reperfusion the animals were weighed again.The animals'neurological deficit was evaluated using Zea Longa score(0=no defcit,4=unable to walk and unconscious).The animals were then killed.The neuronal apoptosis in striatum was assessed(TUNEL)and the PKC protein expression in striatum was determined by immunocyto-chemistry.Results The body weight of the animals in I/R group was significantly reduced after 24h reperfusion as compared to the body weight before ischemia (P＜0.01),while in control group and sevoflurane group there was no significant difference in the body weight before and after sham operation or I/R.The neurological deficit scores were significantly higher in I/R group than in sevoflurane group.The number of apoptotic neurons in striatum was significantly higher in I/R group than in sevoflurane group.The PKC expression in striatum was significantly higher in sevoflurane group than in I/R group (P＜0.01).Conclusion 1.0 MAC sevoflurane inhalation has protective effect on the brain against I/R injury. Upregulation of PKC expression in striatum decreased by I/R is involved in the mechanism.