Although it has many important functions in physiology,glutamine is not used widely in clinic.Low dissolution and unstabitity in water are the main disadvantages of glutamine.L-alanyl-L-glutamine dipeptide is the product of high dissolution and stability in water and can be metabolised and utilized rapidly in the body.The metabolism and clinical use of the dipeptide are reviewed here.

It was confirmed that acetylcholine signaling pathway and dopamine signaling pathway play critical roles in refractive development.Many evidences have supported that acetylcholine and its receptor antagonists were closely related to the formation of experimental myopia.Retinal dopamine signaling could exert a significant influence on refractive development,and its upregulation induced by light comprises an important component of the retinal clock network;meanwhile,the retinal dopamine signaling could also participate in the regulation of retinal circadian rhythms.The role of intrinsic retinal circadian rhythms in the developing process of myopia is gaining increasing attention.Moreover,it was also found that both acetylcholine and dopamine signaling pathways influence the development of myopia.Therefore,the present paper summarizes the two signaling pathways in the mechanisms of regulating myopia process,which provides an insight into the pathogenesis of myopia and clinical ideas for the effective prevention and treatment of myopia.

Objective To investigate the effects of 860MHz microwave on the formation and extinction of context conditioned fear in mice. Methods The mice were exposed to 860MHz continuous microwave ( power density were 380 μW/cm2 or 550 μW/cm2, respectively) for 30 min or 2 h, which then were divided in to 5 groups.Each group consisted of 15 animals. Footshocks were used to induce context conditioned fear by 75 voltages. The frequency and time of freezing after irradiation were investigated. Results When 24 h after foot shocking, the values of freezing time: control group was 2.31 ±4. 17 , two groups of the microwave irradiation 2 h were 3.93 ±6.99 and 2.47 ± 3.34, the Nemenyi test results (P = 0.004): control group was 32.63333, while two groups of the microwave irradiation 2 h were 52.46667 and 39.76667; and the values of freezing frequency: control group was 0.73 ± 1.16 , two groups of the microwave irradiation 2 h were 0.86 ± 1.41 and 1.07 ± 1.16, the Nemenyi test results of (P=0. 014): control group was 33. 26667, while two groups of the microwave irradiation 2 h were 50. 76667 and 40.90000. Conclusion The mice receiving relatively longer period of microwave irradiation showed more stable memory of the context conditioned fear.

Objective To observe the clinical manifestations and the effect factors of thyroid-associated ophthalmopath (TAO) with optic neuropathy. Methods The clinical data of 62 cases (120 eyes) of TAO with optic neuropathy diagnosed in 1994-2001 were retrospectively analyzed. Results The incidence of TAO with optic neuropathy was 18.3% in all the simultaneous TAO inpatients, and was more frequently found in the male than in the female ones. The incidence of TAO with optic neuropathy was correlated with orbitono-increase, ocular myopathy, hypertension, hyperlipemia, diabetes, and cardiopathy (P0.05). In 62 patients with the methylprednisolone pulse therapy, the visual acuity improved in 33 (29 0%), improved while the treatment but decreased after stop treating in 29 (24.2%), and no changes in 58 (46.8%). In 63 eyes undergone orbital decompression with methylprednisolone pulse therapy, 59 (93.7%) had better visual acuity. Conclusion The incidence of TAO with optic neuropathy was correlated with orbitono-increase, ocular myopathy, hypertension, hyperlipemia, diabetes, and cardiopathy. Methylprednisolone pulse therapy and orbital decompression are the effective measures for TAO with optic neuropathy.

Objective To establish the quality standard of Fengsui Pills. Methods The qualitative analysis of Fructus Amomi and Radix Glycyrrhizae in Fengsui Pills was carried out by TLC,and the content of berberine hydrochloride,an effective component of Cortex Phellodendri in Fengsui Pills was determined by HPLC. Results The chromatographic sports of Fructus Amomi and Radix Glycyrrhizae were identified without the interference of negative control. A linearity of berberine hydrochloride was obtained from 0.272?g to 1.360 ?g with a good correlation (r=0.999 9,n=5).The average recovery was 99.01 %and the RSD was 0.98%. Conclusion The qualitative and quantitative methods established in this study are simple and feasible,accurate and reproducible,and can be used as the quality control standard for Fengsui Pills.

Epidermal growth factor (EGF) is a multifunctional growth factor,which is widely expressed in most ocular tissues including cornea,retina and sclera.It may regulate the growth and proliferation of various ocular cells with the interaction of epidermal growth factor receptor in vitro or in vivo.This article reviews the role of EGF in pathological and physiological processes of ocular diseases,including corneal injury,retinal proliferative diseases,myopia,pterygium,glaucoma,cataract,and eye tumors.

Twenty-six eyes which appeared rejection after allograft penetrating keratoplasty between April 2003 and April 2004 in Shandong Shi'erming Eye Hospital were collected, including 16 males and 10 females, 9 cases were repeated relapsing viral keratitis, 8 cases were traumatic posterior corneal leucoma, 5 cases were corneal decompensation caused by various intraocular surgery, 2 cases were congenital leucoma, and 2 cases had other symptom. The rejection occurred at 2 month to 2.5 years after operation. Among them 19 cases were transferred to our hospital and asked adding traditional Chinese therapy because western medicine was ineffective in other hospital. All cases were received local treatment with hormone and non-steroidal anti-inflammatory eyedrop, some cases applied systemic administration with glucocorticoid, mainly based on eye black immunosuppression decoction, potion daily, twice per day, the average time of medication was 11-42 days. Clinical symptoms were served as observation indexes, results showed that the total effective rate of the 26 cases were 100%. The bulbar conjunctiva hyperemia and edema was reduced, corneal opacity became light, and rejection was complete response in 9 cases, 5 of 19 cases which were transferred to our hospital were exempted from operation, and the average vision was improved three lines. It was found that purging liver and eliminating dampness compound Chinese medicine can rapidly reduce anterior chamber's inflammatory response and backoff corneal neovascularization in clinical practice.

Objective To evaluate curative effects of treatment of malignant biliary and gastric outlet-duodenal obstruction with endoscopically placed self-expandable metal stents.Methods A retrospective analysis was performed in 17 patients who underwent enteral stenting after placement of the biliary stent.The success rate of insertion,the effective palliation of biliary and duodenal obstruction,the rate of complication,recurrent stent obstruction and the median patency were observed.Results In 17 patients,biliary stenting were all performed for obstructive jaundice and then enteral stents were inserted.The levels of tatal billirubin [from (263.4 ± 62.5) μmol/L to (157.6 ± 25.1) μmol/L],direct billirubin [from (1233.2 ±66.5) μmol/L to (130.9 ± 27.7) μmol/L] and alkaline phosphatase [from (233.2 ± 66.5) IU/L to (130.9 ±27.7)IU/L] decreased significantly (P ＜0.01),and the gastric outlet score increased significandy [from (0.9 ± 1.1) points to (2.1 ±0.7) points] (P ＜0.01).No serious complication in all patients.Lifetime of patients ranged from 70 days to 332 days,and the median survival time was 192 day.Conclusion Combined biliary and enteral stenting is an effective method for palliation of malignant biliary and gastric outlet-duodenal obstruction.

Objective To explore the diagnostic value of alcohol fixation and liquid-based cytology method for malignant stricture of common bile duct and to study the interval time between sampling and fixation for procedure of alcohol fixation.Methods Data of 82 patients were retrospectively studied,who were suspected of having malignant stricture of common bile duct underwent brushing through endoscopic retrograde cholangiopancreatography (ERCP),and were confirmed by follow-up for 2 years or pathology after surgery from October 2008 to June 2013.These patients were randomly divided into alcohol fixation group (n =30),liquid-based cytology group (n =28) and conventional cytology group (n =24).The positive diagnostic rates of brush cytology in each group were compared.The alcohol fixation group were randomly divided into 2-minute group and 5-minute group according to the interval time between sampling and fixation.Positive diagnostic rates were also compared.Results The positive rates were 73.33％ (alcohol fixation group,22/30),75.00％ (liquid-based cytology group,21/28) and 20.83％ (conventional cytology group,5/24),respectively.The positive rate of conventional cytology group was obviously lower than alcohol fixation group (x2 =21.525,P=0.000) and liquid-based cytology group (x2 =22.208,P =0.000) with statistical significance.But the positive rate of alcohol fixation group was similar to the liquid-based cytology group (x2 =0.683,P =0.898).In alcohol fixation group,the positive rate of 2-min group (88.24％,15/17) was significantly higher than the 5-min group (53.85％,7/13) with statistical significance (x2 =4.535,P =0.033).Conclusion Compared with conventional fixation,alcohol fixation and liquid-based cytology can improve positive diagnostic rate of brushing during ERCP.The alcohol fixation is more simple in procedure and low in cost than liquid-based cytology.The interval time between sampling and fixation should be reduced to no more than 2 minutes.

An on-site method for the determination of sulfur mustard ( SM) was developed based on pinhole shell-isolated nanoparticle-enhanced Raman spectroscopy. By using 0. 1 mol/L MgSO4 as effective agglomeration reagent, more Raman “hot spots” were induced, and thus a limit of detection for SM at 10 μg/L was achieved with a linearity of 10-1000 μg/L and an analytical enhanced factor of 1. 1×106. This method can be directly applied in the measurement of SM in environmental water samples with good sensitivity and reproducibility, and the standard addition recovery was between 88%-114%. Good differentiation of four SM related compounds, 2-chloroethyl ethylsulfide, thiodiglycol, bis-β-chloroethyl sulphoxide and bis-β-chloroethyl sulphone, was also obtained.