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BACKGROUND:Bone marrow mesenchymal stem cel s and al ogenic bones are commonly used as seed cel s and scaffolds, respectively, for constructing tissue-engineered cartilage through in vitro co-culture. The loose body of the knee joint can survive in the articular cavity for a long time, and maintain certain characteristics of cartilage tissues. Therefore, the articular cavity can provide a good environment for the growth and development of chondrocytes. OBJECTIVE:To investigate the effect of bone marrow mesenchymal stem cel s co-cultured with al ogenic bone in the articular cavity. METHODS:Bone marrow mesenchymal stem cel s were isolated from five newborn New Zealand white rabbits. One adult New Zealand rabbit was enrol ed to prepare al ogenic bone for co-culture with bone marrow mesenchymal stem cel s. Afterwards, bone marrow mesenchymal stem cel s and al ogenic bone composites were cultured in the articular cavity (intracavitary culture group) or in vitro as in vitro culture group, respectively;the normal cartilage tissues grew in the articular cavity as control group. Cel s were observed by hematoxylin-eosin staining and type II col agen immunohistochemistry staining at 4, 8 and12 weeks of culture. RESULTS AND CONCLUSION:At 12 weeks culture, hematoxylin-eosin staining showed:in the control group, chondrocytes arranged tightly and directional y with red stained cytoplasm and cartilage matrix as wel as blue nuclei;in the intracavitary culture group, the scaffold was mostly absorbed and chondrocytes grew into the scaffold in a certain direction with smaller shape, while cytoplasm and cartilage ma trix were red stained, blue nuclei appeared;in the in vitro culture group, abundant chondrocytes proliferated in a disordered arrangement. Immunohistochemistry staining showed:the absorbance ( A) values in the intracavitary culture group showed a continuous increase, but no obvious change was in the other two groups. Moreover, at 4, 8 and 12 weeks of culture, A values in the control group and intracavitary culture group were significantly higher than that in the in vitro culture group (P0.05). These results suggest that the tissue-engineered cartilage can be constructed by bone marrow mesenchymal stem cells co-cultured with allogenic bone under in vitro and in vivo environment, especially in the articular cavity.
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Objective To evaluate the clinical value and safety of hysteroscopy in diagnosis of abnormal uterine bleeding.Methods The clinical characters and histopathological data of 272 cases of abnormal uterine bleeding were retrospectively analyzed.They received hysteroscopy in our hospital from Jan.2010 to Jan.2015.Results Histopathological diagnosis showed 75 cases were with endometrial polyps,including 5 cases misdiagnosed as submucosal fibroids,and the correct diagnostic rate was 93.3％ (70/75).50 cases were with submucosal fibroids,and the diagnostic rate was 90.9％ (50/55).97 cases were endometrial hyperplasia,including 7 cases misdiagnosed as atypical hyperplasia or cancer by hysteroscopy,and the correct diagnostic rate was 92.8％ (90/97).19 cases were atypical hyperplasia or endometrial carcinoma,and the diagnostic rate was 73.1％(19/26).Atrophic endometrium were 23 cases.8 cases had intrauterine device remained.Conclusions Premenopausal women are more likely to present with endometrial hyperplasia,submucosal fibroids,endometrial polyps,while endometrial cancer and precancerous lesions are rare.But in postmenopausal women endometrial polyps,atrophic endometrium,cancer and precancerous lesions are mainly included.Hysteroscopic has a good diagnostic value in endometrial diseases which should be combined with histopathological examination.
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BACKGROUND:. Until now modern science cannot explain clearly aboutthe mechanism of acute alcoholic liver injury. Besides such methods as givingup drinking, or symptomatic treatment, there is no specific therapy and remedy. Traditional Chinese Medicine (TCM) has obvious advantages for this: Itcannot only improve the clinical symptoms, but also adjust organism immunefunction, and has very good development future. OBJECTIVE: To study the effects of radix bupleuri and radix scutellariae incompatibility with the ratio of different dosage (2:1, 1:1, 1:2) on acute alcoholicliver injury by regulating the system of endocrine-immunity network in rats. DESIGN: Groups are divided randomly and experiments are made underblank conditions. SETTING: TCM Clinical Laboratory of Pharmaceutical School, Henan University of TCM. MATERIALS: From September to November 2002 in TCM Clinical Laboratory of Pharmaceutical School, Henan University of TCM, the general condi tion of the animals were as follows: 96 healthy Wistar rats were divided into 8groups: blank group, model group, radix bupleuri group, radix scutellariaegroup, xiao-chaihu group, radix bupleuri-radix scutellariae 2:1 group, radix bupleuri-radix scutellariae 1:1 group, radix bupleuri-radix scutellariae 1:2 group. METHODS: ① According to the ratio of 2:1, 1:1, 1:2, radix bupleuri andradix scutellariae were taken respectively (480 g, 240 g; 360 g, 360 g; 240 g, 480 g) to produce the water decocting nedicine. Except the blank group(duplicated by saline of the same volume through consecutive gastric infusion), the other groups are duplicated through consecutive gastric infusionby 56 degrees of Er-Guotou White Spirit (7 mL/kg) two times a day for tendays until the model-making is finished. From the first day, the medicine wasgiven two times a day. The blank group and the model group were given thedistilled water of the same volume. The other groups were given the properwater decocting medicine. The dosage in xiao-chaihu group was 10 g/kg andin the other was all 12 g/kg. ② 16 hours later after the last time when thewhite spirit was given, blood was taken from stomach aorta to produceserum. Liver, spleen, chest gland, adrenal gland were quickly removed. Thecalculating formula of an organ index: An organ index= The weight of an organ (g)/The weight of a body (g) ×100%. The calculating formula of vitamin C content in adrenal gland (mg/g): Content of vitamin C= [(The Avalue of the testing tube-The A value of the blank tube)/ (The A value ofthe standard tube-The A value of the blank tube)] ×density of the standardtube (6 mg/L)×dilution times of the sample before tested/protein content(g/L). ③ Comparison between the groups was shown by using variancesimilar test and single-factor variance analysis.MAIN OUTCOME MEASURES: Index of rats' liver, spleen, chest gland, and adrenal gland (on the right side); the determination of vitamin C content in rats' right adrenal gland.RESULTS: During the experiment, 3 rats in the model group died. Tworats died in radix scutellariae group and radix bupleuri-radix scutellariae group respectively, In each of the other groups only one rat died. The condition of the number of the rats which were used for analyzing results:There were 12 in blank group; 9 in model group; 10 in radix bupleuri group, radix bupleuri-radix scutellariae 1:1 group respectively; 11 in each of the other groups. ① Comparison of index of rats in liver, spleen, chest gland, adrenal gland (right side) between different groups: There was no significant difference between the indexes of rats' liver in different groups.The index of spleen, chest gland, adrenal gland in the model group were all greatly less than in blank group (P ＜ 0.05-0.01). The index of spleen in the radix bupleuri group wcre greatly higher than in the model group, it could make the reduced spleen index return to normal (P ＜ 0.05); The index of chest in radix scutellariae group, radix bupleuri-radix scutellariae 1:1 group, radix bupleuri-radix scutellariae 1:2 group and xiao-chaihu group were greatly higher than in model group (P ＜ 0.05); The index of adrenal gland in radix bupleuri-radix scutellariae 1:2 group and xiao-chaihu group were greatly higher than in model group (P ＜ 0.05). ② Comparison of vitamin C content in rats' right adrenal gland between the groups: Compared with blank group, the vitamin C content of adrenal gland in the model group had no significant difference. While that of radix bupleuri group, xiao-chaihu group, radix bupleuri-radix scutellariae groups were greatly less than that of model group (P ＜ 0.05-0.01), especially radix bupleuri-radix scutellariae 1:1 group had the most significant influence (P ＜ 0.01).CONCLUSION: Interfering functional injuries of liver, spleen and suprarenal gland is one of the mechanisms of acute alcoholic liver injury.Generally speaking, bupleuri-radix scutellariae 1:2 group has the greatest effect on the testing index.