Objective To explore the effects of spermary on sexual behavior,gonadal development and sperm count production.Methods Fifty-six male zebrafishes of 10-month-old AB strain after fertilization were randomly divided into 7 tanks and set up as the normal group,model group,positive control group(clomiphene citrate group,Wuzi Yanzong Pills group),and Spermary low,medium and high concentration groups,8 fishes in each group.Except for the normal group,cyclophosphamide was given in water solution to establish the zebrafish oligospermia model,respectively.On 9 d of modeling,the positive control group was ad-ministered at a concentration of 0.1 μg/mL in the clomiphene citrate group and 6 μg/mL in the Wuzi Yanzong Pill group;the spermary low,medium and high concentration groups were administered at 200,300,900 μg/mL,respectively.On 16 d of modeling,the normal female zebrafishes were placed in the culture tank of each group in a 1∶1 ratio,and the frequency of tail-chasing was observed and recorded in male and female fishes.The body length,weight,testis weight and sperm count were measured and the statistical analysis was performed by comparing the differences among the groups before and after drug administration(one-way ANOVA).Results Com-pared with the normal group,the frequency of tail-chasing of zebrafishes,body length,body weight,testis weight and sperm count in the model group were significantly decreased(P＜0.05).Compared with the model group,the frequency of tail-chasing of zebrafishes,body length,body weight,testis weight and sperm count in the spermary low,medium and high concentration groups all were significantly increased(P＜0.05),in which the vitality change of sexual behavior in the spermary medium concentration group was most obvious,and the increase of sperms count was most obvious.Conclusion A certain dose of spermary could effectively promote the sexual behavior,gonadal development and sperm count production in male zebrafish with oligospermia.The efficacy of spermary in enhancing the male sexual function and treating oligozoospermia and infertility de-serves to be studied.

Chitin short fiber reinforced polycaprolactone composite was prepared by melting blending method. The cytotoxicity and biocompatibility of pure polycaprolactone and of chitin short fiber reinforced polycaprolactone composite were investigated in order to provide useful scientific basis for clinical application. The biocompatibility of pure polycaprolactone and that of chitin short fiber reinforced polycaprolactone composite were evaluated by a series of tests, including cytotoxicity test in vitro, acute systemic toxicity test, hemolysis test, pyrogen test and sensitivity test. The results showed that the cytotoxicity scores of the two materials were grade 0 and the growth and proliferation of the cultured cells were not significantly inhibited by the two materials. There were no potential allergic materials in the composites and the maceration extract showed no hemolytic reaction, no acute systemic toxicity and no pyrogen reaction. We conclude that the composites have fine biocompatibility and are safe for clinical use in the reconstruction treatment for chest wall defect.
Biocompatible Materials ; chemistry ; Bone Substitutes ; chemistry ; Chitin ; chemistry ; Materials Testing ; Polyesters ; chemistry

We have investigated the degradation of pure Polycaprolactone (PurePCL) and chitin short fiber reinforced Polycaprolactone composite (SFRP) in vitro in order to provide useful scientific basis for clinical application. PurePCL, SFRP and DL-PLA were immersed in 0.9% NaCL solution for periods of 2, 4, 8, 12, 16 and 24 weeks. Then pH values in immersing solution, weight loss and mechanical properties of tested materials were measured and SEM was used to study the change of the materials in the process of degradation. It was shown that the initial strength of SFRP was much higher than that of PurePCL. In the process of degradation of SFRP, the pH values maintained weak acid or remianed neutral. The rate of weight loss of SFRP was faster than that of PurePCL, but slower than that of DL-PLA. The strength and modulus of SFRP did not change much in 24 weeks, compared with the initial ones. In conclusion, the composites have excellent properties and may be optimal for clinical use in reconstruction of chest wall defects as well as in internal fixation of bone fracture.
Biocompatible Materials ; chemistry ; Bone Substitutes ; chemistry ; Chitin ; chemistry ; Composite Resins ; chemistry ; Materials Testing ; Polyesters ; chemistry ; Prostheses and Implants