Nowadays, nanotechnologies have shown wide application foreground in the biomedical field of medicine laboratory tests, drug delivery, gene therapy and bioremediation. However, in recent years, nanomaterials have been labeled poisonous, because of the disputes and misunderstandings of mainstream views on their safety. Besides, for the barriers of technical issues in preparation like: (1) low efficacy (poor PK & PD and low drug loading), (2) high cost (irreproducibility and difficulty in scale up), little of that research has been successfully translated into commercial products. Currently, along with the new theory of "physical damage is the origin of nanotoxicity", biodegradability and biocompatibility of nanomaterials are listed as the basic principle of safe application of nanomaterials. Combining scientific design based on molecular level with precision control of process engineering will provide a new strategy to overcome the core technical challenges. New turning point of translational medicine in nanotechnology may emerge.
Biocompatible Materials ; Nanostructures ; toxicity ; Nanotechnology ; Translational Medical Research

Objective To report a peliosis hepatic in child and review literature and discuss.Methods Case history was inquired.Physical,labtoratory,imagement and histopathology of liver biopsy(HE staining) were examed.Results A 4-year old girl appeared dermatitis with erythema and herpes at local skin where was bit by insect before onset.The girl appeared fever,cough,then abdominal pain,hepatomegaly,pleural effusion and ascites.Lab examination revealed slight elevation of aspartate transaminase,?-glutamyltranspeptidase and alkaline phosphatase.The liver B-mode ultrasonography and CT scan revealed hepatomegaly with density heterogeneity of the parenchyma.The liver biopsy revealed many small capsule filled with blood cells.Conclusions Clinical characteristics of the disease are fever,upper abdomen pain,janundice,ascites and hepatomegaly.The diagnosis shall be combined with the pathologic biopsy of liver.

There are 250 species of Zanthoxylum (Rutaceae) in the world. This genus distributed in tropical and subtropical regions. Alkaloids are the major and representative ingredients in these plants including quinolines, isoquinolines, and amide alkaloids, with such biological activities as anti-tumor, anti-inflammatory, analgesic, anti-virus, anti-platelet aggregation, anti-bacteria and anti- oxidant. These species have been used for a long time to treat toothache, urinary and venereal diseases, lumbago and rheumatism. This review summarizes the chemical constituents and pharmacological activities from the Z. sppplants, in an effort to the systematic research and application of the alkaloids of this genus.
Alkaloids ; chemistry ; pharmacology ; Animals ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Humans ; Molecular Structure ; Zanthoxylum ; chemistry

AIM:To observe the changes of tear film on the patients after laser in situ keratomileusis ( LASIK) with corneal flap created by femtosecond laser with Oculus corneal topography.
METHODS:Totally 120 myopic patients (240 eyes) were collected who underwent femtosecond laser surgery LASIK from August to September 2013, and these patients can be followed up for 3mo. Tear break-up time ( BUT) and tear meniscus height ( TMH ) with Oculus corneal topography were recorded preoperatively and postoperatively at 1wk;1, 2 and 3mo.
RESULTS: Oculus BUT: there existed obvious differences (P=0. 012, 0. 000, 0. 023<0. 05) in 1wk, 1 and 2mo compared with the preoperative level. While no such obvious difference ( P = 0. 236 > 0. 05 ) existed in 3mo compared with the preoperative level. TMH:there existed obvious differences (P=0. 025, 0. 019, 0. 026<0. 05) in 1wk, 1 and 2mo compared with the preoperative level. No such obvious difference ( P = 0. 375>0. 05 ) existed in 3mo compared with the preoperative level.
CONCLUSION: Femtosecond laser surgery affects the stability of the tear film at a certain time and a certain extent. The mechanism related to many factors. It is temporary and lighted.

AIM: To observe the changes of tear film on the patients after laser in situ keratomileusis ( LASIK ) with corneal flap created by femtosecond laser with the different gender.
METHODS: The 120 myopic patients ( 240 eyes ) who underwent femtosecond laser surgery LASIK from August to September 2013 were collected, and these patients were followed up for 3mo. The patients were divided into two groups according to the gender, group A was male (110 eyes of 55 patients); group B was female (130 eyes of 65 patients). Dry eye symptom score, tear break-up time ( BUT ) , Schirmer Ⅰ test, corneal fluorescein staining were recorded preoperatively and postoperatively in 1wk,1,2,3mo.
RESULTS: Dry eye symptom score: it was statistically significant between two groups after operation in the 1wk, 1, 2mo(P = 0. 000,0. 023, 0. 030). It had no statistical significance between the two groups in 3mo(P=0. 283). BUT: it was statistical significance between two groups after operation in the 1wk, 1, 2, 3mo ( P= 0. 000, 0. 017, 0.026, 0. 032 ). Schirmer Ⅰ test: it was statistically significant between two groups after operation in the 1wk, 1, 2mo(P = 0. 012,0. 024, 0. 018). It had no statistical significance between the two groups in 3mo ( P=0. 206 ) Corneal fluorescein staining:it was statistically significant between two groups after operation in the 1wk, 1, 2, 3mo (P=0. 022,0. 015, 0. 036, 0.041).
CONCLUSION: The influence of tear film after femtosecond laser surgery for men less than that for women.

To observe the changes of tear film on the patients after laser in situ keratomileusis(LASlK)with corneal flap created by femtosecond laser and microkeratome.
●METHODS: Totally 150 patients (300 eyes) with myopia received operation of LASlK. Patients were divided into two groups according to the methods of making corneal flap. The patients of group one were assigned to receiving LASlK with corneal flap creation by lntralase femtosecond laser (190 eyes of 95 patients), group two were assigned to receiving LASlK with corneal flap creation by microkeratome ( 110 eyes of 55 patients ). Dry eye symptom score, tear break-up time (BUT), Schirmer Ⅰtest(Slt), corneal fluorescein staining(FL)were recorded preoperatively and postoperatively at 1wk; 1, 3 and 6mo.
●RESULTS: Dry eye symptom score: there existed obvious differences at 1wk; 1, 3mo between two groups(P<0. 05). While no such obvious differences existed in the 6mo between two groups(P>0. 05). BUT: there existed obvious differences at 1wk, 1, 3mo between two groups(P<0. 05). While no such obvious differences existed at 6mo between two groups(P>0. 05). SchirmerⅠ test: there existed obvious differences in the 1wk, 1, 3mo between two groups(P<0. 05). Whileno such obvious differences existed in the 6mo between 2 groups(P>0. 05). FL: there existed obvious differences in the 1wk, 1, 3mo between two groups(P<0. 05). While no such obvious differences existed in the 6mo between two groups(P>0. 05).
●CONCLUSlON: The early stability of tear film decrease after operation in both of the two groups. The dry eye symptoms are lighter and recover faster.

Objective To analyze plague epidemic tendency in the Three-River Region of Qinghai.Methods Using retrospective study,the Three-River Region during 1954-2006 year pestis epidemic focus were investigated and analyzed.Result Pestis prevailed mainly in Yushu,Chindu,Qumalai,Nangqian,Zhiduo and the Geermu.Tanghla Township.It was first found that the nature plague focus of miefitus existed in Chengduo County.There are 1 5 kinds of 12 branches in 8 trees infected plague animals were founded,336 Yersinia pestis were separated from the driven objects.Among them there were 291 Himalayas marmot body,account for 86.60%of the total,13 of Tibet sheep,accounts for 3.87%.10 of Qinghai field-mouse,accounts for 2.98%,Also there were 114 Yersinia pestis which were separated from each kind of vector insect in vivo.And,46 pestis strains came from the axe shape of flea in vivo account for 40.35%(46/114),38 pestis strains separated from Xie mountain flea,account for 33.33% (38/114).During 1960-2006 years there were 85 human plague cases were founded,238 occurred,134 died,the case fatality rate wero 56.30%(134/238),the popular seasons were started from May to November,the peak season happened in Aug and Sep.After Oct mainly due to Tibet sheep pestis which will cause as the origin of infection.The majority of sickness was pulmonary plague,account for 49.58%(117/238),whereas the first round case caused by the gland bubonic plague,account for 77.12%(91/118).Conclusions There are two pestis strains natural epidemic focus places in Three-River Source Region of Qinghai including the Himalayas marmot pestis strain and the Qinghai field-mouse pestis strain.The case of human pestis strain causes by the marmot strain,the fiehl-mouse mold mushroom spawn causes human pestis strain has not yet discovered,Three-River Source Region of Qinghai is a pestis strain key popular area in Qinghai Province.

This study examined the ability of 1,2,3,4,6-penta-O-galloyl-β-D-glucose (β-PGG) to induce the expression of heme oxygenase-1 (HO-1) in the PC12 cells and its regulation in the PC12 cells. One week before treatment with the drug, nerve growth factor (NGF) was added to the cultures at a final concentration of 50 ng/mL to induce neuronal differentiation. After drug treatment, HO-1 gene transcription was analyzed by reverse transcription polymerase chain reaction (RT-PCR). Expression of HO-1 and NF-E2-related factor2 (Nrf2) and activation of extracellular signal-regulated kinase (ERK) and Akt were detected by Western blotting. The viability of the PC12 cells treated with different medicines was examined by MTT assay. The oxidative stress in the PC12 cells was evaluated qualitatively and quantitatively by DCFH-DA. The results showed that β-PGG up-regulated HO-1 expression and this increased expression provided neuroprotection against MPP(+)-induced oxidative injury. Moreover, β-PGG induced Nrf2 nuclear translocation, which was found to be upstream of β-PGG-induced HO-1 expression, and the activation of ERK and Akt, a pathway that is involved in β-PGG-induced Nrf2 nuclear translocation, HO-1 expression and neuroprotection. In conclusion, β-PGG up-regulates HO-1 expression by stimulating Nrf2 nuclear translocation in an ERK- and Akt-dependent manner, and HO-1 expression by β-PGG may provide the PC12 cells with an acquired antioxidant defense capacity to survive the oxidative stress.

The ABCD2 score is validated for evaluating short-term stroke risk after transient ischemic attack (TIA); however, whether it is able to predict the long-term risk of vascular outcome remains uncertain. Recently a new tissue-based definition of TIA has been proposed. The ABCD2 scores of 145 TIA patients admitted to our hospital were retrospectively calculated and stratified into two categories: ≤ 3 points (low risk); 4-7 points (moderate-high risk). At a median follow-up of 81 months, new vascular events were recorded. Follow-up data were available in 107 patients. Seventy one patients had a moderate-high ABCD2 score. Sixty six patients experienced a cerebral ischemic event; 8 a myocardial infarction; 7 died of cerebrovascular or cardiovascular cause. Moderate-high ABCD2 score was significantly associated with the further cerebral ischemic events (hazard ratio [HR], 1.755; 95% confidence interval [CI], 1.019 to 3.024) and with the combined endpoint (HR, 1.818; 95% CI, 1.079 to 3.063). Our study shows that the ABCD2 score may also be used to predict long-term vascular outcome after tissue-based definition of TIA. Moderate-high ABCD2 score is associated with an increased general vascular risk in the long-term follow-up after TIA.
Stroke

Objective To investigate the relationship between the changes in serum lipoperoxide (LOOH) and nitric oxide (NO) levels and the pathogenesis of coronary heart diseases (CHD). Methods The concentrations of LOOH in the sera of 33 healthy subjects and 33 patients with CHD were determined by ferrous oxidation in xylenol orange (FOX) assay, while those of NO by enzymatic one-step assay with nitrate reductase. Results The average serum concentration of LOOH in the patients was (7.64±3.26) μmol/L, much higher than that of healthy subjects [(5.78±3.21) μmol/L, P<0.05]. The NO level was (42.5±18.9) μmol/L in the patients and (51.4±17.8) μmol/L in the healthy subjects, showing significant difference between the 2 groups (P<0.05). Conclusion The increased LOOH and decreased NO levels in the serum might be involved in the pathogenesis of arteriosclerotic heart diseases.