With the development of automated quantitative detection of serum hepatitis B surface antigen ( HBsAg) , HBsAg quantification is becoming increasingly important in management of chronic HBV infections.Studies have shown that HBsAg quantification together with HBV DNA load may be used to monitor the natural history of chronic HBV infection as well as to predict the clinical outcome of interferon treatment.However, there is no consensus on the clinical use of HBsAg quantification for evaluating patients′responses to nucleos( t) ide analogues therapy.This paper reviews the up-to-date clinical studies on the clinical significance of HBsAg quantification in management of chronic HBV infection.

Adult ; Female ; Humans ; Male ; Middle Aged ; Pesticides ; poisoning

Adult ; Female ; Humans ; Middle Aged ; Nurses ; Occupational Exposure ; prevention & control ; Operating Rooms ; Surveys and Questionnaires ; Universal Precautions ; Young Adult

Objective To observe histologic changes of human cytomegalovirus(hCMV)-infected explants of first trimester human placenta and expression of hCMV gene in the hCMV-infected explants, and investigate the mechanism of intrauterine transmission of hCMV from mother to fetus.Methods The first trimester placenta explants cultures were carried out, and they were infected with hCMV for 10 days. The expression of hCMV immediate early protein(IEP) 72-IEP86 were determined using indirect-immuno fluorescent assay, and in situ hybridization method was used to examine the hCMV late gene (LG)mRNA. For histologic evaluation of morphological changes in villi, transmission electron microscope was used.Results (1) Typical hCMV-induced lesions bearing hCMV IEP72-IEP86 were consistently localized in the trophoblast of covering placenta villi, interstitial cell and vascular endothelia cell 12 hours after infection, and were predominant in cytotrophoblast. (2) Replication of hCMV in placenta explants culture occurred from 12 hours to 24 hours and disappeared since 48 hours after infection with different concentrations of hCMV when examined by in situ hybridization. (3) Tissue integrity and viability of first trimester placenta explants were obtained in culture for 10 days and then explants were infected with different concentrations of hCMV 100 tissue culture infectious doses(TCID_ 50 ),200 TCID_ 50 and 300 TCID_ 50 , the progression of the infection was observed in the tissue that maintained its normal cellular organization under light microscope. But typical inflammation of cellular organization was observed under transmission electron microscope. Conclusions (1) A flash replication of hCMV in placental explants culture occurs; IEP72-IEP86 may be in intrauterine infection of hCMV for a long time. (2) There are pathological ultrastructure changes in hCMV-infected explants.

Animals ; Caudate Nucleus ; drug effects ; physiology ; Dopamine Antagonists ; pharmacology ; Rats ; Rats, Wistar ; Substantia Nigra ; drug effects ; physiology

Objective To investigate the factors of hospitalization expense in patients with type 2 diabetes mellitus undergoing non-emergency surgery.Methods A retrospective study included diabetic (109 cases) and control (162 cases) groups.Hospitalization expense and other observation indices were compared between two groups and subgroups.The factors that contribute to hospitalization expense were analyzed with multifactor regression analysis model.Results The median hospitalization expense was 12 014.74 yuan in the diabetic group,1.24 times than that in the control group (P =0.001).Diabetic group has higher American Society of Anesthesiologists (ASA) classification,longer wound healing time,higher postoperative infection rate,and longer hospital stay (P ＜ 0.01).Multifactor analysis revealed that the significant factors that influence the hospitalization expense were ASA classification (β =0.442,P =0.000),postoperative fasting plasma glucose (β =0.204,P =0.020),and postoperative infection (β =0.204,P =0.019).No significant difference was found in postoperative infection rate and hospitalization expense between two groups,when patients had received minimally invasive surgeries (P ＞ 0.05).Conclusions Type 2 diabetes patients have higher hospitalization expense;ASA classification,postoperative fasting plasma glucose,and postoperative infection are the main influence factors.Giving priority to minimally invasive surgeries and enhancing perioperative glucose control can help to reduce hospitalization expense in patients with type 2 diabetes mellitus.

AIM:To analyze the recovery of visual cortex activation range of color vision in anisometropia amblyopia children after treatment by using blood oxygen level dependence-functional magnetic resonance imaging ( BOLD- fMRI ) and SPM8 software.
METHODS:Self-control study. This fMRI study directly compared activity in visual cortex produced by color monocular stimulation in 13 monocular anisometropia amblyopia children. The project of study was blocked design. The data of functions and anatomical MRI was stimulated by three-primary colors and was preprocessed and analyzed by SPM8 that based on MATLAB software. According to the data, we compared the change of the central area of color vision when first visit and 1, 2 ,4wk after treatment.
RESULTS: The BA17, BA18, BA19 and BA37 of amblyopia children were different activated after they accepted the three-primary colors stimulation (P<0. 01). After 4wk treatment, amblyopia children accepted red stimulation, the visual cortex activation range without expanding; after accepting green stimulus, on the left side of the visual cortex BA37, BA19, BA20, the average t value were 3. 5210, 3. 2716, 3. 1534 ( P< 0. 01 ); after accepting blue stimulation, the scope of the right side of visual cortex at BA19, BA18 were expanded to different extent, the average t value were 3. 7345, 3. 2701 (P<0. 01).
CONCLUSION: After 4wk treatment, visual cortex activation of color vision of anisometropia amblyopic children is expanded, but with low extent, after the short-term treatment of amblyopia, visual cortex activation of color vision has a certain degree of recovery but not obvious.

?The small incision lenticule extraction ( SMILE ) with femtosecond laser is a new mode of corneal refractive surgeryrecently. The safety, efficacy, stability and predictability of SMILE lead the corneal refractive surgery to a new world that only use femtosecond laser to correct myopia.With the development and popularity of SMILE, the clinical effect has aroused much concern.But there remain exited disputes in refractive stability, visual quality and corneal biomechanical property, contrast sensitivity and glare symptoms, corneal sensitivity and dye eye, corneal endothelial cells and intraocular pressure.These will be summarized in this review.

AIM:To explore the changes of intraocular pressure measured by noncontact tonometer (IOPNCT) with high myopia and analyze the relative fators after small incision lenticule extraction(SMILE).METHODS:A retrospective study.Totally 108 cases (216 eyes) with high myopia received SMILE during March 2015 to October 2016 were involved.The IOPNCT, corneal central thickness (CCT) and corneal curvature for 3mo were recorded and analyzed by ANOVA, LSD t test.The Pearson correlation analysis and multiple linear regression model analysis were used to evaluate the relationship between IOPNCT and its influence factors.RESULTS:(1) There was significant statistical difference in IOPNCT after SMILE at 1d, 1wk, 1 and 3mo compare with preoperative (t=17.785, P=0.019;t=17.981, P=0.016;t=18.841, P=0.012;t=19.364, P=0.001);the IOPNCT after SMILE decreased.The IOPNCT values at every time after SMILE was no statistical difference (t=1.871, P=0.818;t=3.062, P=0.328;t=1.143, P=0.373).(2) The IOPNCT in high myopia were positive correlated with CCT and corneal curvature after SMILE (r=0.4356, 0.295;P<0.05), respectively.(3) The multiple linear regression model analysis revealed that Y=-14.601+0.348X1+0.03X2 (Y was IOPNCT, X1 was corneal curvature, X2 was CCT,P<0.001);Y=3.679+0.28X1+0.012X2 (Y was△IOPNCT,X1 was variation of corneal curvature,X2 was△CCT, P<0.001).CONCLUSION:The IOPNCT decreased after SMILE in high myipia, and it showed that there was no significant influence to use glucocorticoid eye drops in short terms.There was positive correlation among IOPNCT, CCT and corneal curvature after SMILE.

Background The special pathological change of diabetic retinopathy(DR)is microvascular disorder.Angiopoietin-like protein 2(Ang-2)is a new protein associated with genesis of blood vessels.Quercetin has multiple pharmacological action,including improving the microcircularion and the permeability of blood capillary.However,the action mechanism of Ang-2 on DR was unclear.Objective The present study was to investigate the effects of quercetin on Ang-2 and its receptor Tie2 expression in retina with diabetes mellitus.Methods Sixty clean male Wistar rats were randomized into 7 groups and 10 rats for each group,and 10 rats served as blank control group.Streptozotocin of 35 mg/kg was intraperitoneally injected in 60 rats to establish the diabetic models.Quercetins encapsulated by liposome with the doses of 50,150 and 250 mg/(kg · d)(3-5 ml)were used to gavage in different groups of models for 12 weeks,and normal saline solution and calcium dobesilate were used at the same fashion as the negative control group and positive control group,respectively.Twelve weeks later,the animals were sacrificed and retinas were isolated.Expressions of Ang-2 protein and Tie2 mRNA in retinas were detected by ELISA and RT-PCR,respectively.The usage and rearing of the animals complied with the Regulations for the Administration of Affair Concerning Experimental Animals by State Sciences and Technology Commission.Results ELISA showed that the A450 of Ang-2 in 150 and 250 mg/(kg · d)quercetin groups was 0.796±0.057 and 0.842±0.043 respectively and was lower than that negative group(1.012±0.046),showing statistically significant differences(q =2.95,2.698,P＜0.05).RT-PCR assay showed that expression of Tie2 mRNA(Tie2 mRNA/GAPDH mRNA)in retinas was 0.712±0.092 and 0.821±0.087,presenting statistically significant differences in comparison with negative group(1.182±0.098)(q =3.497,2.852,P＜0.05).The expression levels of Ang-2 and Tie2 mRNA in retina were lowest in 150 mg/(kg · d)quercetin group.Conclusions Quercetin can improve the retinal microcirculation by downregulating the expressions of Ang-2 and its receptor in early period of diabetic rats.