Purpose To detect serum specific IgE to crab allergen in different group people with extracted Eriocheir sinensis allergic proteins and to provide laboratorial evaluation for diagnosis and treatment of crab anaphylaxis.Methods Micro titer plates were coated with the allergic proteins extracted from crab.A total of 1907 serum samples from 3 group people were detected for specific IgE to crab allergens with indirect ELISA.The serological IgE level of different group people allergic to crab food wag compared and analyzed.Results 203 individuals were serum specific IgE positive in the detected 1 907 serum samples,and the positire rates Wag 10.65 percent(203/1 907).The statistical analysis showed that the difference of serum IgE positire rates among the 3 group people wag very significant(P＜0.01).Conclusion The detection of serum specific IgE using allergic proteins extracted from crab has diagnostic meaning,since it can be used as laboratorial evaluation for clinical diagnosis and treatment of crab anaphylaxis.

Objective To prepare 68Ga-PSMA-617 and perform its microPET imaging on both normal BALB/c mice and BGC-823 (PSMA expression) tumor bearing mice.Methods 68GaCl3 was eluted from 68Ge-68Ga generator by 0.05 mol/L HCl,then added to the DKFZ-PSMA-617 and heated at 85 ℃ for 5 min.The labeling efficiency and in vitro stability of 68Ga-PSMA-617 in sodium chloride solution and HAS were analyzed by radio-HPLC.Water partition coefficient and plasma protein binding rate were also evaluated.MicroPET imaging was performed in normal female BALB/c mice and human gastric tumor (BGC-823) bearing mice at 60 min post-injection of 68Ga-PSMA-617.18F-FDG was also injected to BGC-823 tumor bearing mice to acquire microPET imaging for contrast.Results The labeling yield of 68Ga-PSMA-617 was 97.9％,and it could be used directly without purification.68Ga-PSMA-617 showed good in vitro stability in sodium chloride solution and 5％ HAS,the radiochemical purities were 94.9％ and 81.0％ respectively at 80 min post-incubation.68Ga-PSMA-617 was water-solubility substance,and it cleared mainly through the kidneys.MicroPET imaging showed that 68Ga-PSMA-617 could be accumulated in tumor (T/NT=2.28),which was better than 18F-FDG.Conclusions Preparation of 68Ga-PSMA-617 is convenient and has a high labeling yield.It can specifically target to PSMA expression tumors and has a promising prospect in clinical application.

Objective To observe the changes of adiponectin (APN),chemerin and tumor necrosis factor-α (TNF-α) in subclinical hypothyroidism (SCH) rats,and to clarify the effect of L-thyroxine (L-T4) replacement therapy.Methods Sixty-five male Wistar rats were randomly divided into five groups via the random number table method:control group (n =10),SCH group A (n =15),SCH group B (n =15),SCH group C (n =15) and L-T4 treatment group (SCH + L-T4,n =10).Rats in groups SCH A,B and C were fed with 5,15 and 20 mg·kg-1·d-1 methimazole (MMI) once daily by gavage.The rats in SCH + L-T4 group were given 20 mg·kg-1·d-1 MMI once daily through gavage,after 8 weeks,6 μg·kg-1· d-1 of L-T4 was intragastrically added (50 μg/tablet) and the model was completed at the 16th week.The levels of serum APN,chemerin and TNF-α were measured via the enzyme linked immunosorbent assay (ELISA) method.The mRNA and protein levels of APN,chemerin and TNF-α in visceral adipose tissue of 5 groups were determined by real-time PCR (RT-PCR) and Western blotting,respectively.Results Compared with the control group [(202.20 + 17.27) ng/L,(143.70 ± 18.46) ng/L,(114.69 ± 4.18) μg/L],the serum chemerin levels in the SCH A,B,C groups were significantly higher [(314.33 ± 16.80),(355.00 ± 17.10),(365.00 ± 11.63) ng/L,P ＜0.05] and TNF-α levels also increased significantly [(222.60 ± 14.13),(279.20 ± 12.79),(288.30 ± 15.89) ng/L,P ＜0.05],and APN levels were significantly decreased [(77.21 ± 3.08),(68.58 ± 2.92),(59.45 ± 2.41) μg/L,P ＜0.05];but compared with SCH group C,the levels of chemerin and TNF-α in the SCH + L-T4 group were decreased [(260.07 ± 10.80),(178.40 ± 10.29) ng/L] and the level of APN [(102.35 ± 3.17) μg/L] was increased (P＜ 0.05).The mRNA and protein levels of APN in SCH A,B,C groups were significantly lower than those in the control group (P ＜0.05).The APN mRNA and protein levels in the SCH + L-T4 group were significantly higher than those in the SCH group C (P ＜ 0.05).The mRNA and protein levels of chemerin and TNF-α in the SCH A,B,C groups were higher than those in the control group (P ＜ 0.05).However,the mRNA and protein levels of chemerin and TNF-α in the SCH + L-T4 group were significantly lower than those in the SCH group C (P ＜ 0.05).Conclusion The expression levels of serum chemerin and TNF-α in SCH rats have increased,and APN levels decreased,but L-T4 can ameliorate these changes.