Background Open-globe injury of zone Ⅱ is a severe eyeball wound in the sclera area near 5mm from the corneal limbus.To accurately evaluate the local tissue structure after the wounding is very important for lessening the complications of eye injury.Ultrasound biomicroscope (UBM) has been proven useful in examining eyeball wall and vitreous at the wound in order to offer the useful information about whether secondary operation is needed for the injured eyes and when is the optimal timing for surgery.Objective The present study is to explore the clinical application of UBM in open-globe injury of zone Ⅱ. Methods This is an observational study of clinical cases.UBM examination was performed on 38 eyes of 38 cases received emergency repair surgery of open-scleral injury.The restore status of sclera,ciliary body and vitreous of injuried zone (zone Ⅱ) were evaluated under the UBM in 3-5 days after the operation.The comprehensive results of UBM,B-scan and ophthalmoscope examinations were analyzed to determine the further treatment.The oral informed consent was obtained from each subject before this trial.Results Vitreous surgery were performed on 15 cases,and all wounds were found by UBM and were proven in the surgery.The other 23 cases were followed up in out-patient department and no obvious complications were found.Conclusion UBM is a valuable and atraumatic examination for open-globe injury of zone Ⅱ.It offers important and appraisal information about ocular injury.

Objective:To investigate the absorption characteristics of matrine and glycyrrhizic acid in different intestinal segment and at various mass concentration,and explore the absorption changes of the combination of the two drugs.Methods:In situ single pass intestinal perfusion (SPIP) model was used,and the concentration changes of matrine and glycyrrhizic acid were determined by HPLC, and Kaand Peffwere calculated. Results:Matrine was absorbed in the whole of small intestine, and best in jejunum, and compared with the duodenum and ileum,the absorption had significant difference (P<0.05).The absorption at different mass concentrations had significant difference(P<0.05). The absorption of glycyrrhizic acid in small intestine was poor without significant differences in different intestinal segments and at various doses (P>0.05). After the combination of the two drugs, the absorption of matrine and glycyrrhizic acid had significant difference when compared with that of separated use(P<0.05). Conclusion:The absorption of ma-trine is dose-dependent,and with the dose increase,the absorption increases. Glycyrrhizic acid absorption does not change with mass concentration,and the absorption may be passive transport. The combination of the two drugs can improve the in vivo absorption of ma-trine and increase the concentration of glycyrrhizic acid in intestine.

【Objective】 To evaluate the differential miRNA expression of breast milk exosome in premature and full-term groups, and to analyze the regulatory pathways by bioinformatics, so as to provide guidance and scientific basis for the growth and development of premature infants and the prevention and treatment of related diseases. 【Methods】 From August 2020 to June 2021, breast milk samples from 13 premature (premate group) and 9 full-term infants(full-term group) in the Department of Child Health Care of the Second Affiliated Hospital of Nanjing Medical University were collected to extract exosomes. The miRNAs of two groups of breast milk exosomes were sequenced by high-throughput sequencing. According to the sequencing results, miRNA expression profiles of milk exosome were analyzed. Biological function software was used to carry out GO and KEGG pathway analysis of differential miRNA. 【Results】 The expression of miRNA in human milk exosomes was rich, especially hsa-miR-148a-3p,hsa-let-7b-5p, hsa-let-7g-5p, hsa-miR-22-3p, hsa-miR-99a-5p, hsa-miR-200, hsa-miR-146b-5p and hsa-miR-26a-5p were relatively high expressed in preterm group and full-term group. Differential expression analysis showed that compared with full-term infant breast milk, 7 miRNAs were up-regulated(log2|fold change|=2.803, 2.714, 1.632, 2.360, 1.350, 3.387, 2.137, respectively), and 5 miRNAs were down-regulated(log2|fold change|=-2.553, -2.197, -2.771, -1.395, -1.136, respectively)(|fold change>2|, P<0.05) in breast milk for preterm infants. In these differential expressed miRNAs, down-regulated miR-29b(P=0.001) and up-regulated miR-133a-3p(P=0.004) were associated with inflammation, and up-regulated miR-126-5p(P=0.021) and miR-126-3p(P=0.041) were associated with lipid metabolism. The fatty acid biosynthesis pathway was obviously enriched in preterm group. MiR-7-5p, miR-29b-3p and miR-100-5p played a role in the fatty acid synthesis pathway. 【Conclusions】 Exosomal miRNAs are rich in breast milk, and have significant differences between preterm and full-term infants′ mothers. The differentially expressed miRNA in preterm infants treast milk may be related to inflammation and promote the growth and development of preterm infants through the fatty acid biosynthesis pathway.

ObjectiveTo investigate the effect and mechanism of polysaccharide in water extract of Cyclocarya paliurus （CPWP） in inhibiting benign prostatic hyperplasia （BPH）. MethodsCPWP was obtained by heating reflux， aqueous extraction， alcohol precipitation， and freeze drying. The chemical composition and structural properties of CPWP were analyzed by high performance liquid chromatography with 1-pheny-3-methyl-5-pyrazolone pre-column derivatization and infrared spectroscopy. Male SD rats were randomly assigned into control， model， finasteride （ig 5 mg·kg^-1）， and low-， medium-， and high-dose （ig 50， 75， 100 mg·kg^-1） CPWP groups， with 8 rats in each group. The BPH model was established by subcutaneously injecting propionate testosterone in castrated rats. The rats in the drug intervention groups were administrated with corresponding drugs， and those in the control group were administrated with an equal volume of normal saline each day. After 30 consecutive days， the rats were sacrificed， and the prostate tissue was separated and weighed. The effects of drug interventions on the body weight， prostate wet weight， and prostate index of rats were examined. The prostate tissue was stained with hematoxylin-eosin （HE） for observation of pathological changes. Enzyme-linked immunosorbent assay was employed to measure the level of dihydrotestosterone （DHT）， and immunohistochemical staining was used to detect the expression of steroid 5 alpha-reductase 2 （SRD5A2） and Ki67 in the prostate tissue. ResultsCPWP was identified as a saccharide， with characteristic absorption peaks of saccharides. CPWP showed the total sugar content of 44.15% and molecular weight within the range of 5.5-78.8 kDa， being composed of mannose， rhamnose， galacturonic acid， glucose， galactose， xylose， and arabinose. Compared with the control group， the model group had significantly increased prostate wet weight and prostate index （P<0.01）， thick and tall prostate epithelial cells， increased internal wrinkles， papillary expansion into the cavity， an elevation in DHT level in the serum， and up-regulated expression of SRD5A2 and Ki67 in the prostate tissue （P<0.05， P<0.01）. Compared with the model group， both the finasteride and CPWP groups showed decreases in prostate wet weight and prostate index （P<0.05， P<0.01）， thinned prostate epithelial cells， with only a small portion of internal wrinkles and papillary expansion into the cavity， shortened papillary protrusions， lowered DHT level in the serum， and down-regulated expression of SRD5A2 and Ki67 in the prostate tissue （P<0.01）. Moreover， CPWP exerted effects in a dose-dependent manner. ConclusionCPWP inhibits BPH by regulating the expression of SRD5A2.

OBJECTIVETo evaluate the effect of individualized scalp acupuncture base on location of brain function for motor dysfunction in stroke patients.

METHODSA total of 180 patients were randomly assigned into an individualized scalp acupuncture (ISA) group, a conventional scalp acupuncture (CSA) group and a rehabilitation group, 60 cases in each one. In the ISA group, we stimulated Sishencong (EX-HN 1), motor area and balance area, matched with pre-motor area for higher muscle tension, application area and's three-needle for involuntary motion, application area for poor motor coordination, forehead five-needle for cognitive disorder, sensory area for sensory disturbance. In the CSA group, the affected Dingnieqianxiexian (MS 6), Dingniehouxiexian (MS 7) and Zhenxiapangxian (MS 14) were selected. Rehabilitation was used during needle retained in the two groups. Simple rehabilitation was used in the rehabilitation group. All the treatment was given from Monday to Friday for 4 weeks, once a day for 20 times. Eight-week follow-up was applied. The Fugl-Meyer assessment (FMA) for motor function, modified Barthel Index (MBI) were used to evaluate clinical effect.

RESULTSAfter treatment and at follow-up, FMA and MBI scores increased compared with those before treatment in the three groups（all<0.01）, with significant differences among the three groups (all<0.000 1) and better results in the ISA group compared with those in the other two groups (<0.05,<0.01) at the two time points. The FMA and MBI scores in the CSA group were higher than those in the rehabilitation group after treatment and at follow-up (all<0.05).

CONCLUSIONThe individualized scalp acupuncture can improve motor dysfunction and self-care ability of daily life for stroke patients.