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Objective To investigate the feasibility of high fat-introduced hyperlipeidemia model in male SD rat and study the time rule of molding .Methods 30 Male adult rats of SD Strain bred in the animal house of the institute were divided into 3 groups after 1 week adaptation , group 1:control group, normal diet;group 2:model 1 group, high fat high cholesterol diet;group 3:model 2 group, high fat high cholesterol diet .The period of experiment was 8 weeks.Food and water intake were measured everyday and body weight were measured every four days .Blood were collected by orbital venous at the end of fourth ,sixth,eighth week to test their serum lipid level .At the end of experiment ,animals were killed to collect liver and aorta tissue for HE stain .Results Compared with control group ,the food intake of model 1 was higher and model 2 was significant lower , water intake of model 2 was significant lower , the ratio of liver/weight of two model groups were significant heavier ,and weight of model groups were higher .High fat diet significantly increased TC levels of model groups at the end of fourth ,sixth week.The level of LDL-c in model 1 group were higher and the HDL-c were lower compared with control group .HE stain showed the livers of control group were regular ,arrangements of the liver cells were trim, dyeing present uniformity .The two model groups showed a large range of hepatocyte fatty change ,a few liver blood sinus were in congestion and infiltrated with inflammatory cells .Aorta HE stain showed no significant change among 3 groups.Conclusions The method of high fat-introduced hyperlipeidemia model in male SD rat is feasible and the model turned out to present hypercholesterolemia with severe fatty liver .On the other hand,levers of serum lipid increased within an increase—inter-adjustment—increase state .In the process of modeling ,how to overcome the symptom of anorexia and the state of cholesterol inter-adjustment in animals is the key to successfully establish hyperlipeidemia model .
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Objective To observe the clinical efficacy of interferon by aerosol inhalation as a part of treat-ment of hand,foot and mouth disease of children.Methods The clinical data of 240 children with hand foot and mouth disease were collected,and they were divided into group A (control group)and group B (interferon treatment group)according to the order of admission.The recovery time on body temperature,rashes on the hands and feet, mouth pain,the average hospitalization time and total efficacy rate were compared.Results Group B was superior to group A in the following aspects,it took shorter time to get recovery of mouth pain,rashes on hands and feet,the aver-age hospitalization time.The recovery time for mouth pain of group A was (60.5 ±22.1 )h,which of group B was (52.8 ±19.5)h.The time for rashes on hand and foot recovery of group A was (72.3 ±25.4)h,which of group B was (54.7 ±22.5)h.The average hospitalization time of group A was (124.8 ±42.4)h,which of group was B (108.2 ±36.7)h,and the differences were statistically significant (t =2.45,2.38,2.16,P =0.018,0.015,0.032). The total effective rate of group B was 93%,which was higher than 85.3% of group A,and the difference was statistically significant (χ2 =6.012,P =0.012).Conclusion Interferon by aerosol inhalation as a part treatment of hand -foot -and -mouth disease of children (ordinary type)can increase the efficacy rate,shorten course of the disease,accelerate comprehensive rehabilitation of patients.
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Objective To investigate the effect of estrogen replacement therapy applied in different periods to ovariectomized rats and to evaluate the cognitive function of the rats.Methods Totally 40 rats were ovariectomized to be postmenopausal models.They were divided into early hormone replacement therapy group (n =10,managed by estradiol valerate at day 3 after surgery),early control group (n =10,managed by saline at day 3 after surgery),late hormone replacement therapy (n =10,managed by estradiol valerate at day 90 after surgery for 30 days) and late control group (n =10,managed by saline at day 90 after surgery for 30 days).The behavior indicators of the rats were evaluated by Morris watermaze and hippocampal metabolite was detected by proton magnetic resonance spectroscopy,including N-acetylaspartate (NAA),choline containing compounds (Cho),creatine(Cr),myoinositol (mI),NAA/Cr,Cho/Cr and mI/Cr.Results (1) Navigation test: escape latency were (43 ± 13) s at the early control group,(28 ± 9) s at the early HRT group,(82 ±26) s at the late control group and (48 ± 18) s at late HRT group.Swimming distance were (1 404 ± 238) cm at the early control group,(878 ± 354) cm at the early HRT group,(2411 ±818) cm at the late control group and (1 310 ±434) cm at the late HRT group.The escape latency and swimming distance of the early and late HRT groups were significantly shorter than those at the control groups (P ＜ 0.05).(2) Spatial probe test: the swimming time in the target quadrant of rats in the early HRT group (34.0 ± 3.0) s were longer than those in other groups (P ＜ 0.05).(3) Proton magnetic resonance spectroscopy: NAA/Cr were 1.12 ±0.17 at the early control group,1.26 ±0.12 at the early HRT group,1.57 ±0.21 at the late control group and 1.38 ±0.28 at the late HRT group.The late HRT group and the late control group were higher than their early groups (F =6.05,P =0.040).There was no significant difference between the HRT groups and the control groups (F =0.04,P =0.860).mI/Cr were 0.69 ±0.04 at the early control group,0.46 ±0.12 at the early HRT group,0.70 ±0.03 at the late control group and 0.75 ± 0.08 at the late HRT group.There were statistically significant differences of the experimental time between the early and late groups(F =16.45,P =0.004).The differences between the early HRT group and the early control group,and the late HRT group and the late control group were significant(F =6.01,P =0.040).And there was an interaction with the experimental time and HRT measures (F =13.79,P =0.006) ; early HRT can reduce the average level of mI/Cr.Cho/Cr were 0.95 ± 0.09 at the early control group,0.80 ±0.12 at the early HRT group,0.87 ±0.09 at the late control group and 0.85 ± 0.12 at the late HRT group.There was no significant difference among those groups (P ＞0.05).NAA/mI: there was an interaction with the experimental time and HRT measures (F =12.95,P =0.007).Early HRT can elevated levels of NAA/mI,while the late results were reversed.Conclusion Earlier estrogen replacement therapy may play a positive role in improving cognitive function of the ovariectomized rats.