Objective To investigate the effect of astragalus membranaceus on the ultrastructure of small intestinal epithelial cells in rabbits with hemorrhagic shock. Methods Twenty-four New Zealand white rabbits of both sexes weighing 2-3 kg were randomly divided into 3 equal groups : (A) control group received normal saline iv ( n = 8); (B) group HI received astragalus membranaceus 20 mg? kg-1 iv ( n = 8); ( C) group H2 received astragalus membranaceus 10 mg?kg-1 iv ( n = 8 ). Animal model of hemorrhagic shock-resuscitation was established according to Wigger's. A strip of small intestine, 10 cm in length was taken from distal end of ileum for electron microscopic examination. The two-dimensional structural parameters and three-dimensional structural parameters of mitochondria were calculated. Results (1) Morphological changes of small intestine : in group H1 epithelial cells were orderly arranged, with relatively normal mitochondria and intestinal villi were slender and orderly; in group H2 the nuclei in epithelial cells were dwindled, the intestinal villi were thin and short and unorderly arranged with slightly swelled mitochondria and blurring ridges. Endoplasmatic reticulum was dilated; in group C the gaps between epithelial cells widened. There were a lot of apoptotic cells. Microvilli were thin and short and swelled. Mitochondria were swelled with broken ridges. Endoplasmatic reticulum was severely dilated. (2) Structural parameters of mitochondria : in group C there were least mitochondria and the swelling of mitochondria was severe; in group H1 there were plenty of mitochondria and the swelling was slightest; in group H2 the changes in mitochondria were between group C and H1. Conclusion Astragalus membranaceus can protect small intestine from ischemia/reperfusion injury in a dose-dependent manner.

Objective To discuss the effect of DNA extraction of bloodstain on the filter paper with four methods of solid phase absorption.Methods 180 bloodstain samples on the iflter paper, each one contains 1 microlitre anticoagulation peripheral venous blood, divided into 4 groups with 45 samples, respectively. All samples were treated with four methods of solid phase absorption, i.e. DNA IQ? System, D-shield sensitive DNA Extraction Kit, High efficiency Silica Bead DNA Extraction Kit and Conventional silica bead method. The concentration of DNA and the results of STR typing of four groups were compared each other.Results The concentration of DNA was 3.764±1.790μg/mL and 3.634±1.112μg/mL by using D-shield sensitive DNA Extraction Kit and High efifciency Silica Bead DNA Extraction Kit, respectively. However, the concentration of DNA by using Conventional silica bead method group (3.350±1.250) was not signiifcantly different from each other (P<0.05), while the concentration of DNA extracted with above three methods were higher than by using DNA IQ? System (1.864±1.207)(P<0.001); Signiifcant differences of peak height existed between DNA IQ? System and other three methods (P<0.001); As the same time, the peak height of samples by using High efficiency Silica Bead DNA Extraction Kit and Conventional silica bead method were signiifcantly different from D-shield sensitive DNA Extraction Kit (P<0.01).Conclusions The DNA extracted in bloodstain on the iflter paper by using D-shield sensitive DNA Extraction Kit, High efifciency Silica Bead DNA Extraction Kit and Conventional silica bead method was more than DNA IQ? System. Meanwhile, the quality of DNA using High efifciency Silica Bead DNA Extraction Kit and Conventional silica bead method may be higher.

60 Chinese skulls(30 males and 30 females) from Liaoning province of the People's Republic of China were measured, By applying the multiplestepwise discriminant function, sexual diagnosis of the maxillary, frontal, occipital and parietal bone were carried out, 12 discriminant equation for sexual diagnosis have been obtained,The diseriminant rate of equations with accuracy tests on the same series of crania results in 66.7～93.3% of the cases analyzcd

The relationship of the nose tip position and the skull figures which were measured from the lateral craniographs in 49 ladies of 17～19 age living in Shenyang was studied. The figures measured on craniographs were analyzed by multiple stepwise regression analysis on IBM-PC/XT computer, and the regressoin equations for estimating the nose tip position of female in Shenyang were obtained. Cases in which the errors were within 2 mm were 71.43 to 77. 55 percent.

Objective:To explore the feasibility and influencing factors of E-cervix cervical elasticity analysis technology in analyzing normal cervical function during non pregnancy.Methods:213 women who underwent vaginal ultrasound examination in the Ultrasound Department of Foshan Maternal and Child Health Hospital from May 2019 to November 2019 were selected as the research objects. Taking the median sagittal section of the cervix as the initial section, the E-cervix technology software package was started to automatically obtain the elastic contrast index (ECI), hardness ratio (HR), cervical strain rate (IOS), cervical strain rate (EOS), cervical strain ratio (IOS/EOS) and cervical length (CL). The relationship among age, menstrual cycle, BMI index, birth history, delivery mode and elastic parameters were compared.Results:There was no correlation between the elastic parameters and age, and there was no significant difference among different age groups ( P>0.05); there was no significant difference in the elastic parameters of cervical tissue in menstrual period, proliferative period and secretory period ( P>0.05); there was no significant difference in the elastic parameters of underweight, normal and overweight ( P>0.05); CL was positively correlated with body mass index (BMI) ( r=0.225, P<0.05), there was no correlation between other parameters and BMI ( P>0.05); there was no significant difference between the elastic parameters of patients with and without birth history ( P>0.05); the CL of women with cesarean section [(34.22±4.96)mm] was higher than that of women with natural birth [(29.03±4.14)mm] ( P<0.05), and the other parameters had no statistical significance ( P>0.05). Conclusions:The elastic parameters of cervix obtained by E-cervix technique are not affected by age, BMI, menstrual period, reproductive history and delivery mode, and can be used for quantitative evaluation of cervical function.

OBJECTIVEThis paper aimed to determine the mRNA expression of osteoclast-related factors interleukin-6 (IL-6), interleukin-12 (IL-12) p35, IL-12p40, matrix metalloproteinase-9 (MMP-9), nuclear factor of activated T-cells cytoplasmic 1 (NFATcl), receptor activator of nuclear factor-KB (RANK), and tumor necrosis factor-α (TNF-α) mRNA in murine macrophages infected by a periodontitis patient's own tissue nucleic acid. Another aim was to investigate the effects of a periodontitis patient's own tissue nucleic acid on the differentiation of macrophages into osteoclasts.

METHODSInflammatory periodontal tissue samples of chronic periodontitis patients were taken during periodontal flap surgery, and healthy gingival tissue samples were taken from orthodontic patients during tooth extractions. Total RNA from periodontal tissue was extracted and reversely transcribed into cDNA and then cryo-preserved until further use. First, specific sequence oligodeoxynucleotide MT0I at a concentration of 1 µg · mL⁻¹ was added in murine macrophage RAW264.7, and the cells were incubated for 3 hours. Cells with PBS (1 µg · mL⁻¹) were used as negative controls. The inflammatory periodontal tissue cDNA and healthy periodontal tissue cDNA (1 µg · mL⁻¹) was added subsequently. There were four experimental groups: healthy periodontal tissue cDNA+ RAW264.7, inflammatory periodontal tissue cDNA+RAW264.7, MT01+healthy periodontal tissue cDNA+RAW264.7, and MT01+inflammatory periodontal tissue cDNA+RAW264.7. Real-time quantitative polymerase chain reaction was used to detect the mRNA expression of osteoclast-related factors IL-6, IL-12p35, IL-12p4O, MMP-9, NFATcl, RANK, and TNF-α mRNA after 3, 6, 12, and 24-hours.

RESULTSThe mRNA levels of osteoclast-related factors NFATc1, MMP-9, TNF-a, IL-6, IL-12p40, IL-12p35, and RANK in RAW264.7 were markedly upregulated with the treatment of periodontitis patient's own tissue nucleic acid. However, the mRNA expression of osteoclast-related factors was inhibited by use of an immunosuppressant MT01.

CONCLUSIONThe periodontitis patient's own tissue nucleic acid could promote the differentiation of murine macrophage into osteoclasts.

Animals ; Cell Differentiation ; Cytokines ; metabolism ; Gene Expression ; Gingiva ; Humans ; Interleukin-12 Subunit p40 ; Interleukin-6 ; Macrophages ; Matrix Metalloproteinase 9 ; Mice ; Osteoclasts ; metabolism ; Periodontitis ; RNA, Messenger ; Tumor Necrosis Factor-alpha

Objective To investigate the relationship between rapists and related allele genes based on the analysis of 15 short tandem repeats (STRs) loci genetic polymorphism. Methods The method of Genome-wide scan was being used. Buccal swab samples of 129 rapists and 156 random populations were collected and PCR compound amplification was carried out with the aid of AmpFISTR Identifiler system. Then the products were subjected to electrophoresis and gene detection with AB13100 type gene analysis system so as to calculate and compare the alleles of 15 STRs gene frequency in the two groups. Results All the 15 STRs loci allele gene frequency in rapists and random population was found to coincide with Hardy-Weinberg law(P>0. 05). Allele 28 of D21S11 (rapists: 1.55% ,control group:5. 13%) ,allele22 of FGA(rapists:24.03% ,control group:16.99%),allele23 of FGA(rapists: 17.05% ,control group:26.28%) ,allele 10 of TH01(rapists:1.16% ,control group:4.17%) ,allele 8 of TPOX(rapists:55.77% ,control group:63.77%),allele 12 of TPOX(rapists:4.26% ,control group: 1.28%) were different between the two groups (P< 0.05) .while it is no differ significantly in other STRs loci allele gene(P >0.05). Conclusion Allele 28 of D21 S11,allele 22 and 23 of FGA, allele 10 of TH01, allele 8 and 12 of TPOX may be associated with the violent crime of rape. It is suggested that there are existing sensitive or resistance genes about the violent crime of rape in chromosome 2,4,11,21.

Objective To study the morphological characteristics of femurs of adult human and 11 kinds of adult animals fromcattle, horses, pigs, goats, sheep, dogs, cats, rabbits, geese, ducks, chickens, and to establish an effective species identification method among various species. Methods The 4 cmmid-dia-physeal segment of the femur fromadult human (older than 20 years old) at autopsy w as obtained. Addi-tionally, the 4 cmones from11 kinds of adult animals w ere obtained. After decalcification, all femurs w ere made into slices, and then w ere observed by optical microscope. The 25 indexes w ere selected and analyzed by step discriminant analysis according to differences betw een human and mammal, human and poultry, and human and 11 kinds of animals. Results The histological structure of bone mineral density of middle part of femur had obvious characteristics among the species. And the morphology and number of osteon show ed the trend of obvious biological evolution. There w ere 11 indexes w ith significant differ-ences betw een human and 11 kinds of animals to establish some mathematical models to discriminate all species. The correct discrimination rate w as 96.3% betw een human and mammal. The correct discrimina-tion rate w as up to 100% betw een human and poultry, and w as 89.4% among human, mammal and poultry. Conclusion The mathematical models have good correct discrimination rate among human and the other animals, w hich could be applied in the practical species identification cases.

The artificial seeds of Dendrobium huoshanese was produced with Auxiliary buds, Protocorm-like bodies, and adventitious shoots. By using orthogonal experiment, we studied the effect of Maltose (%), hormone rate between 6-BA (mgx L(-1)) and NAA (mgL(-1)), active carbon (%), sodium alginate (%), time of ion exchange (min) on germination rate of artificial seeds of D. huoshanese. Then the leaking rate of maltose and variation of pH value of artificial seed capsule during vegetating of artificial seeds of D. huoshanese was measured. The results show that maltose played the most important role in inducing D. huoshanese artificial seeds to germinate. The optimal combination was: maltose 4%, hormone rate between 6-BA (mg x L(-1)) and NAA (mg x L(-1)) 10:1, active carbon 0.1%, sodium Alginate 4%, time of ion exchange is 10 min. Protocorm-like bodies were appropriate propagartor, the germination rate of artificial seeds of D. huoshanese takeing Protocorm-like bodies as the propagartors is 90.1%. After germination, the survival rate of seedlings of artificial seeds was 80.6%, the leaking rate of maltose of artificial seed capsule was 0.52%, and the pH value of artificial seed capsule decreased during the process of vegetation of artificial seeds. After having been stored at 4 degrees C for 20 d, the germination rate of artificial seeds of D. huoshanese takeing Auxiliary buds, Protocorm-like bodies, Adventitious shoots as the propagartors were 3.3%, 10.6%, 5.2%. Under natural conditions the germination rate was 13.8% after 10.0 g/L carbendazim was appended into artificial seed capsule. This result provides a foundation of manufacture and further study of the artificial seeds of D. huoshanese.
Alginates ; pharmacology ; Charcoal ; pharmacology ; Culture Techniques ; methods ; Dendrobium ; growth & development ; Germination ; Glucuronic Acid ; pharmacology ; Hexuronic Acids ; pharmacology ; Maltose ; pharmacology ; Plant Shoots ; growth & development ; Seeds ; growth & development

Objective To study the histomorphology structure of the femur in adult horses and adults, analyze the histological features and establish the method of identifying the species between humans and horses. Methods The 4 cm mid-diaphyseal segment of the right femur from adult human at autopsy was obtained. At the same time, the right femur of the horse was collected and the middle section was obtained about 4cm. After decalcification, a bone tissue section about 25 μm in thickness was obtained. Observe under an optical microscope, images under a microscope were input into a computer, and 25 indicators were selected for stepwise discriminant analysis. Results Significant differences between horses and human were observed on 13 indicators such as number of Haversian system and Haversian system diameter. Mathematical model for species identification was established based on these indicators. After a blind test,the discrimination reaches 99.6%. Conclusion Horse and human femur histological structure have obvious species characteristics and the established discriminant equation can effectively identify horses and human femur fragments.