In recent years many reports on the progress of mammary tumors treated by traditional Chinese medicine ( TCM) have appeared in the literature.In this article, progress of clinical and experimental study between human and canine mammary tumors was compared.Ways and methods of how TCM treat mammary tumors were exhibited such as Chinese medicinal formulae, herbal extracts and active ingredients.Meanwhile, mechanisms of TCM treating mammary tumors were pointed out.The purpose of this article is to provide idea about TCM clinical therapy methods for canine mammary tumors, and to provide research foundation and important models for study of human mammary tumors.

Objective To study the regulation role on molecular level of hCG on P450scc,P450c17 and 3?HSD in adult mouse Leydig cells. Methods Leydig cells of adult mice were cultured in vitro for 1 and 8 hours with or without hCG,then P450scc,P450c17 and I,VI total 3?HSD mRNA levels were measured respectively by the semi quantitative RT PCR as well as Scal restriction endonuclease incised methods.Meanwhile,the testosterone contents were measured in two groups. Results 1.In stimulated group Leydig cells cultured for 1 and 8 hours with hCG,the testosterone contents were higher significantly than those in control groups(1 hour P 0.05),but the ratio of type VI/I 3?HSD mRNA gradually increased. Conclusion hCG can stimulate the transcription of P450scc,P450c17 and type VI 3?HSD in adult mouse Leydig cells.

objective To retrospectively evaluate the accuracy of endoscopic ultrasonography (EUS)and CT in preoperative tumor,and nodal metastasis(TN)staging of esophageal carcinoma.Methods TN stages of 87 cases diagnosed with preoperative EUS and CT were compared with postoperative pathological results.No patient underwent radiotherapy or chemotheraphy.The radial echoendoscope was used,and balloon dilation was required in 5 cases with stricture.Results The total accuracy of T staging with EUS was 85.1%.CT could not differentiate Tl from T2.The sensitivity of EUS for N staging was 85.0%,higher than that of CT(60.8%).However,some lymph nodes which were not detected by EUS could be revealed by CT.Accuracy of EUS plus CT in T staging is 85.1%.and that in N staging is 90.8%.Conclusion EUS is the most accurate measure in assessing the depth of tumor invasion,whereas the combination of EUS and CT is capable of an overall evaluation for TNM staging.

Objective To study the function of the X\|zone cells in the 5 days old male mouse adrenal gland and the relationship between the function and the sexual differentiation. Methods The technique of in situ RP\|PCR was used to detect the expression of type Ⅰ and Ⅲ 17? HSD mRNA. Results In the cells of X\|zone which located in the interface between adrenal crotex and medulla, there were expressions of type Ⅰ and Ⅲ 17? HSD.Conclusion\ The X\|zone cells of adrenal gland in immature mouse could synthesize androgen, enhanced the male sexual differentiation together with the androgen synthesized from the testis.\;[

Objective To evaluate the diagnostic performance of diffusion kurtosis imaging (DKI) and its combination with DWI and proton MR spectroscopy (1H-MRS) in differentiating malignancy from benign breast lesions. Methods Fifty-three patients with 38 histopathologically confirmed malignant and 15 benign breast lesions were retrospectively studied. The patients were examined by breast MRI at 3.0 T prior to operation, including conventional T1WI, fat-suppression imaging, DWI, DKI and 1H-MRS. The shape and margin of breast lesions, and their corresponding mean values for ADC, mean kurtosis (MK) and mean diffusivity (MD) were determined by two blinded radiologists in consensus. The presence or absence of choline (Cho) peak was identified using LCModel software. Independent-samples t test or χ2 test was performed for the comparison of clinical characteristics, shape and margin of lesions, and imaging parameters between malignancy and benign lesions. ROC analysis was performed to evaluate the diagnostic accuracy of DKI, DWI and 1H-MRS alone or in combination, in comparison with the histopathologic findings. Results The onset age of breast malignancy was higher than that of benign ones, and the difference has statistical significant (P<0.05). Malignant lesions were most often seen in postmenopausal women, with unclear margin. There was no significant differences for body mass index (BMI), fiber type, the size and shape of lesions between benign lesions and malignancy (P>0.05). The mean ADC,MD and MK of benign lesions were(1.464 ± 0.348)× 10-3mm2/s,(1.726 ± 0.268)× 10-3mm2/s and(0.692 ± 0.227), the mean ADC,MD and MK of malignancy were(0.963 ± 0.170)× 10-3mm2/s,(1.158 ± 0.262)× 10-3mm2/s and(1.311 ± 0.218), respectively. Significant differences were obtained between benign and malignant lesions for all parameters (P<0.05).The area under the ROC curve (AUC) of ADC, MD and MK for differentiating malignancy from benign lesions was 0.913, 0.933 and 0.968, respectively. Taken the maximum Youden's index of MK (1.110) as the ROC optimal cut-off point, MK exhibited better diagnostic sensitivity, specificity and accuracy for distinguishing malignancy from benign lesions [89.5%(34/38),93.3%(14/15) and 90.6%(48/53), respectively], compared with MD and ADC. Multiparametric imaging with combination of DKI, DWI and 1H-MRS improves the diagnostic specificity (with the highest as 100.0%) but decreases the sensitivity (with the highest as 81.6% and lowest as 71.1% ), compare with the single parametric imaging. Conclusions MK generated from DKI enables differentiation of breast lesions with a higher diagnostic sensitivity and specificity than DWI and 1H-MRS. DKI combined with DWI and 1H-MRS increase specificity but decrease sensitivity for breast cancer characterization.

Background Blepharitis caused by Demodex infestation is very common in clinical practice.There are various methods mentioned in the study of Demodex infestation in China,but a unified introduction and evaluation of the operating procedures is lacked.A quick and accurate clinical diagnostic method for Demodex infestation needs to be further studied.Objective This study aimed to establish operation procedures for the clinical examination of eyelid Demodex infestation,which were applied to evaluate the conditions of eyelid Demodex infestation in ocular patients with discomfort.Methods One thousand and fifty-two patients with eye dryness,eye itchiness or other symptoms were selected for slit lamp examination and photographing of the eyelid margin area.Three eyelashes with associated scurf from each superior eyelid were plucked out for examination of Demodex under the microscope.Positive findings included observation of Demodex mites or eggs.Their amounts were recorded individually for all eyelash samples.Results A procedure for observing,recording and reporting eyelid Demodex infestations in patients was successfully established.By using this procedure,1 052 patients were investigated for the examination of Demodex infestations.Demodex mites or eggs were found in 582 cases (55.3％).The positive rate of Demodex infestation increased with age,and the population over 60 years group had the highest positive rate,showing a significant difference among the different age groups (x2=10.547,P=0.001).There was no significant difference in positive rate between male patients and female patients (P =0.352).The test turnaround time (TAT) for one examination was (11.4±5.2) seconds.Conclusions The operational procedure for examining the palpebral margin Demodex infestation by the slit-lamp,optical microscope,photographing and laboratory reports is established.It is simple and quick in the appliation for the clinical diagnosis of eyelid Demodex infestation.

This article was aimed to study the preparation process of glycyrrhetinic acid (GA)-tanshinone IIA (TSN)-salvianolic acid B (SalB) compound liposomes with 3-succinic-30-stearyl glycyrrhetinic acid (18-GA-Suc) which is one of amphiphilicglycyrrhetinic acid derivatives as targeting molecule. The structure of the targeting molecule was validated by 1H-NMR and 13C-NMR methods. The feed ratio of 18-GA-Suc was optimized through single factor test and the incorporation ratio of 18-GA-Suc was determined by low-speed centrifugation. Meanwhile, physicochemi-cal properties between Suc-GTS-Lip and GTS-Lip were compared. In vitro release studies of three components in Suc-GTS-Lip were conducted by equilibrium dialysis method. The results showed that the optimum conditions were when the feed ratio of 18-GA-Suc was 10%lipid liposomal membrane (mol·mol-1). It revealed that the incorpora-tion ratio of 18-GA-Suc was 96.58%, and the encapsulation efficiencies of GA, TSN, and SalB were about 86.15%, 81.70%, and 91.05%, respectively. In addition, the Suc-GTS-Lip was spherical and uniformly dispersed with parti-cle size of 128.7 nm and zeta potential of-15.5 mV. The release model of GA and TSN was fitted well with Higuchi equation, while SalB was fitted well with Hixon-crowell equation. It was concluded that Glycyrrhetinic acid deriva-tives (18-GA-Suc) can be successfully expressed in the liposome membrane, and the optimal preparation method of Suc-GTS-Lip was stable. All three components encapsulated into liposomes had sustained-release effects, which laid a good foundation for its further study about liver-targeting.

ObjectiveTo investigate the mechanism of action of Sini powder in the treatment of liver cancer based on network pharmacology and molecular docking. MethodsTraditional Chinese Medicine Systems Pharmacology Database and Analysis Platform was used to obtain the compound and target of Sini powder, and the corresponding gene Symbol was obtained through Uniprot. The disease genes of liver cancer were obtained from Human Genome Database, and the genes with intersection with the target genes of Sini powder were screened out. Cytoscape3.7.1 software was used to draw the map of “traditional Chinese medicine (TCM)-compound-target” network. STRING was used to construct a protein-protein interaction (PPI) network, R studio software was used to conduct gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses on therapeutic targets, and then the results were visualized. The active component with the highest number of targets was selected as the ligand, and the target with the highest degree in the PPI network was selected as the receptor, so as to predict the structure of receptor-ligand complex and the amino acid residues that bind to each other. ResultsIn this study, 91 core targets and 141 relevant active components of Sini powder were screened out, among which quercetin and kaempferol were the main active components in the treatment of liver cancer. TP53 and HSP90AA1 were the main therapeutic targets. The GO enrichment analysis obtained 1007 items which met the screening criteria, which were mainly involved in the biological processes of antioxidation reaction, activity regulation of protein serine and threonine kinase, and cellular stress response. The KEGG enrichment analysis obtained 102 pathways, which mainly regulated the hepatitis B pathway and the PI3K-Akt signaling pathway in the prevention and treatment of liver cancer. The results of molecular docking showed a synergistic antitumor effect between the crystal structure domains VAL147, CYS220, GLU221, and PRO222 of quercetin-TP53. ConclusionThis study reveals the mechanism of action of Sini powder in the treatment of liver cancer by acting on multiple targets and signaling pathways, which provides a theoretical basis for biological experiments.

Fear memories are temporarily suppressed after repeated retrieval, a phenomenon known as memory extinction.How to reduce or even eliminate fear memory is the key to the treatment of fear related diseases such as post-traumatic stress disorder(PTSD). A single extinction training based on Pavlov's fear regulation task could only inhibit the expression of conditioned fear memory traces, but it could not eliminate the acquired conditioned fear memory. However, according to the reconsolidation theory based on memory, the retrieval-extinction paradigm has a more lasting effect on the erasure and rewriting of fear memory, and can effectively prevent the return of fear memory. Studies have shown that extraction-regression is closely related to a variety of neurotransmitter receptors such as glutamate receptor(GluR), dopamine receptor(DAR), L-type voltage-gated calcium channels(LVGCs) and cannabinoid. Moreover, its effect is closely related with factors such as retrieval-extinction memory stage. At present, most of the researches on extracted boundary conditions only stay at the level of behavior, with little understanding and exploration on the level of molecular mechanism. From the perspective of molecular neurobiology, with different stages of memory and different types of receptors and molecular mechanisms, this research reviewed the mechanisms of retrieval-extinction in recent years.It provided valuable signaling pathways, molecular targets and research directions for the treatment of fear-related diseases such as PTSD.

A lightweight residual attention enhanced Unet(LRAE-Unet)is designed for the fully automatic brain tumor segmentation.LRAE-Unet uses lightweight residual module to solve the problems of gradient disappearance and network degradation when the network layers increases,lightweight self-attention module to suppress the irrelevant areas and highlight the significant features of specific local areas,and enhanced average pooling module with a larger field of perception to reduce the space of feature map,save computing resources and avoid over-fitting.The experiment on BraTS 2019 dataset shows that the proposed method has a Dice similarity coefficient of 91.24%,88.64%and 88.32%in the segmentations of the whole tumor,tumor core and enhanced tumor,which proves its feasibility and effectiveness for brain tumor segmentation.