Based on the theory of toxin in The Inner Canon of Yellow Emperor （《黄帝内经》）， this paper explores the concept and connotation of toxin from several aspects， including medicinal toxicity， pathogenic toxicity， pathoge-nesis and treatment of toxin pathogen. It explores the mechanism and significance of using toxin substances in curing and inducing diseases， sorts out the etiological and pathological evolution of toxic pathogens， clarifies the derivation and differentiation process from external toxins to internal toxins， and elucidates the interactions between toxin and other pathogenic factors such as phlegm， stasis， dampness， and fire. It further distinguishes the logical hierarchy of toxin caused by metabolic disorders such as sugar， fat， and drowning， clarifies that the essence of the etiology of "hidden toxin"， and determines the corresponding treatment principles and methods for toxic pathogens. It establishes a theoretical framework of traditional Chinese medicine toxic pathogen theory， providing theoretical basis for the clinical treatment of many diseases.

Objective:To investigate the effect of gastrodin(GAS)on the sex-determining region Y-box2(SOX2)/β-catenin pathway in microglia induced by lipopolysaccharide(LPS).Methods:BV2 microglia was cultured in vitro and divided into the following groups:Control group(Control),LPS group(LPS),LPS+0.17 mmol/L gastrodin treatment group(LPS+GAS-L),LPS+0.34 mmol/L gastrodin treatment group(LPS+GAS-H),SOX2 inhibitor pronethalolgroup(PR),LPS+PR group(LPS+PR),and LPS+PR+GAS group(LPS+PR+GAS).Effect of PR on BV2 microglia viability was detected by CCK-8.The expression of SOX2,β-catenin,mannose receptor(CD206)and tumor necrosis factor-α(TNF-α)was assessed using Western Blot and immunofluorescence double staining.Results:PR did not induce significant BV2 cell death in the 0～40 μmol/L range.After LPS treatment,the expression levels of SOX2,β-catenin,and TNF-α significantly increased in the LPS group,while CD206 decreased(P＜0.05).Following GAS treatment,the expression levels of SOX2,β-catenin,and TNF-α significantly decreased,while CD206 increased(P＜0.05).Compared to the LPS group,the expression levels of β-catenin and TNF-α significantly de-creased in the PR group(P＜0.05),but no significant difference was observed between the LPS+GAS and LPS+PR+GAS group.Conclusion:GAS significantly inhibits LPS-induced microglia activation potentially through the inhibi-tion of the SOX2/β-catenin signaling pathway,and exerts anti-inflammatory effects.

To investigate risk factors of death in newborns with congenital diaphragmatic hernia (CDH). A total of 126 newborns with CDH from June 2012 to September 2018 were enrolled. Concomitant malformations were recorded by descriptive analysis. Newborns received surgical treatment (=120) for CDH were divided into survival group and fatal group. The risk factors of death were analyzed by univariate and multivariate logistic regression and the ROC curve with generated with relevant variables. There were 55 CDH newborns with concomitant malformations (43.7%), including 20 cases (15.9%) with multi-malformation. Logistic regression analysis showed that premature rupture of membranes (PROM), postoperative atelectasis, long duration of postoperative mechanical ventilation, postoperative high oxygenation index (OI) were related to death (all <0.05), and the delayed surgery was a protective factor (<0.05). In ROC analysis of postoperative OI in predicting death, the area under the curve (AUC) was 0.841, with the cutoff value of 5.74, the sensibility and specificity of OI was 81.0% and 75.0%, respectively(<0.01). Newborns with CDH have a high rate of malformations. The risk factors of death were PROM, postoperative atelectasis, postoperative long duration of mechanical ventilation and higher postoperative OI, and delayed surgery may reduce mortality.
Hernias, Diaphragmatic, Congenital ; diagnosis ; mortality ; surgery ; Humans ; Infant ; Infant Death ; Infant, Newborn ; Logistic Models ; ROC Curve ; Retrospective Studies ; Risk Factors ; Sensitivity and Specificity

Objective To evaluate the relationship between liver cell type A receptor (EphA) expression and androgen receptor (AR) signaling in androgen-dependent prostate cancer cells. Methods RT-PCR and Western blot assay were used to determine mRNA and protein levels of EphA3 and AR in prostate cancer LNCaP and 22Rv1 cells, respectively. The variations of EphA3, AR and prostate specific antigen (PSA) expressions were also measured in these cells after dihydrotes?tosterone (DHT) treatment for 48 h. The constructed EphA3-Luc (-789-+146) luciferase reporter plasmid was co-transfect?ed with pcDNA3.1(+)-AR or siAR in 22Rv1 cells to analyze the effects of different AR expression levels on EphA3 tran?scription activity. Results The expression pattern of EphA3 was similar to AR, showing a lower level in prostate stromal cell line WPMY-1 and a higher level in prostate cancer cell lines LNCaP and 22Rv1. When stimulated with 10 nmol/L DHT, the expression levels of AR, PSA and EphA3 were significantly increased in 22Rv1 cells, and the protein levels of these genes were also increased in LNCaP cells. Moreover, AR expression levels markedly influenced the activity of EphA 3 pro?moter. Conclusion AR up-regulates EphA3 expression by increasing the activity of EphA3 promoter.

Child, Preschool ; Ethnic Groups ; Female ; Humans ; Male ; Pedigree ; beta-Thalassemia ; genetics

OBJECTIVES: Apoptosis may play an important role in the mechanism underlying the GJB2 gene conditional knockout (cCx26) mice cochlear cell death. The objective of this study was to explore the the damage mode of the outer hair cells (OHCs) and its real time point of apoptosis and provide information to further explore the role of apoptosis in the happening of hearing loss in cCx26 mice. METHODS: Cochleae from mice at various developmental stages (P8, P12, and P21) were dissected out and first used to be observed under the scanning electron microscope (SEM). Basilar membranes from mice at P8, P14, P18, and P21 were stained by fluorescein isothiocyanate-conjugated phalloidin and propidium iodide (PI) and examined under confocal microscope. RESULTS: The loss of OHCs of cCx26 knockout mice was first set between P12 and P21 under SEM. Whole mount phalloidin and PI staining revealed that obvious apoptotic appearance of the OHCs surface morphology was observed at P18. CONCLUSION: Typical apoptotic morphology was found in the OHCs in the organ of Corti of the cCx26 mice at P18. This may provide information to further study the role of apoptosis in the occurrence of hearing loss of cCx26 mice.
Animals ; Apoptosis ; Basilar Membrane ; Cell Death ; Cochlea ; Connexins ; Electrons ; Fluorescein ; Hair ; Hair Cells, Auditory, Outer ; Hearing Loss ; Hearing Loss, Sensorineural ; Mice ; Mice, Knockout ; Organ of Corti ; Phalloidine ; Propidium

Objective To study the application value of modified urine nucleoside's detection in prognosis of patients with bladder cancer. Methods We enrolled 85 patients with bladder transitional cell carcinoma confirmed by pathological examination.The 85 patients fulfilled one-year follow-up visit after TUR-BT and were reviewed every three months.The 85 patients did not relapse in the first third month after operation.At the sixth month after operation,20 cases relapsed.18 cases and 19 cases relapsed at the ninth month and the twelfth month after operation.Patients with recurrence added up to 57 cases as the recurrent group.The remaining 28 cases did not relapse at one year after operation as the no recurrent group.Of the 85 cases,55 cases were in T(is) - T1,while 30 cases were in T2 - T4.Of the 85 cases,27 cases were with G1,40 cases were with G2 and 18 cases were with G3.In T(is) -T1,there were 35 cases in recurrent group,while there were 20 cases in the no recurrent group.In T2 -T4,there were 22 cases in recurrent group,while there were 8 cases in the no recurrent group.There were 50 normal people in the control group.Highperformance liquid chromatography/electrospray ionization-quadrupole-time-of-flight mass spectromerry was used to measure the levels of change of two urine modified nucleosides (M1A,1-MeI) which the patients with bladder cancer had different pathology grades,clinical stages,before or after operation and recurrence or no recurrence. Results The levels at third month after operation in no recurrent group ( M1A:3.24 ± 0.40,1 -MeI:5.73 ± 0.67 ) were significantly lower than that before operation ( M 1A:4.34 ± 0.98,1-MeI:14.22 ± 4.05,P ＜ 0.005 ),and remained in low status at another time points after operation.The levels at the third month after operation in recurrent group (M1A:3.31 ±0.33,1-MeI:5.67 ±0.55) were significantly lower than that before operation ( M1A:4.32 ± 1.19,1-MeI:14.31 ± 4.12,P ＜ 0.005 ),which was on the rise and indicating a high level approaching the condition before operation.According to the time point before the operation,recurrent group and no recurrent group were higher than control group (M1A:2.91 ±0.84,1-MeI:5.56 ± 1.25,P ＜ 0.01 ).The levels at the sixth month,ninth month and twelfth month after operation in recurrent group ( M 1A referring to 4.04 ± 0.48,4.11 ± 0.47,4.09 ± 0.53 ;1-MeI referring to1 1.46 ± 1.34,12.14 ± 1.22,12.33 ± 1.27) were the highest (P ＜ 0.01 ).The levels of change of two urine modified nucleosides between pathology grade and clinical stage had no statistical difference ( P ＞ 0.01 ).The levels in recurrence group in T(is) - T1 ( M1 A:5.92 ± 1.28,1-MeI:20.01 ± 8.53 )were higher than the levels in no recurrent group ( M1A:4.02 ±1.22,1 -MeI:11.21 ± 6.45,P ＜ 0.05 ),which was the same in T2 - T4. Conclusion Urine modified nucleosides detection offer a certain clinical value the prognostic of operated bladder cancer patients.

ObjectiveTo study the treatment and nursing care for intracranial aneurysm in elderly patients. Methods67 patients aged over 60 with intracranial aneurysm were reviewed. ResultsThe outcome was well (Glasgow Outcome Scale scores, 4～5) in 50 cases, and poor in 17 cases(Glasgow Outcome Scale scores, 1～3)．The median of time staying in hospital was 19 d in patients accepted surgery, and 11 d in the patients accepted intervention (P<0.05)． The preoperative Hunt-Hess grade was related with the outcome (P<0.05). ConclusionThe Hunt-Hess grades and the location of aneurysms are related with the outcome, but the treatment of surgery or intervention is not.

Objective:To construct GJB2 gene mutaitons common in Chinese EGFP fusion protein vectors, and to search for better way to study the mechanism of deletion mutaitons in GJB2 gene. Method: Non-fusion protein vectors of 235delC, 299-300 del AT and 176 del 16 bp were first made by point mutaiton methods in vitro. Then expression part of the upper 3 mutations were amplified by PCR and the PCR products were cloned into TA cloning vector. After cutting by restriction enzymes EcoRI/BamHI, three deletion mutaions were inserted into pEG-FP-N1 vector. Sequencing was used to verify the validity of the fusion protein vectors. HEK293 cells were trans-fected with the recombinant DNA samples by the liposome complex method. Results The recombined plasmids were highly expressed in HEK293 cells. Green fluorescence singals were distributed uniformly in cytoplasm. Conclusion; GJB2 mutations common in Chinese EGFP fusion protein vectors were constructed successfully. It may provide a better way to explore the reasons of nonsyndromic hearing loss common in Chinese.

OBJECTIVE: To construct GJB2 gene mutations common in Chinese EGFP fusion protein vectors, and to search for better way to study the mechanism of deletion mutations in GJB2 gene. METHOD: Non-fusion protein vectors of 235delC, 299-300 del AT and 176 del 16 bp were first made by point mutation methods in vitro. Then expression part of the upper 3 mutations were amplified by PCR and the PCR products were cloned into TA cloning vector. After cutting by restriction enzymes EcoRI/BamHI, three deletion mutations were inserted into pEGFP-N1 vector. Sequencing was used to verify the validity of the fusion protein vectors. HEK293 cells were transfected with the recombinant DNA samples by the liposome complex method. RESULT: The recombined plasmids were highly expressed in HEK293 cells. Green fluorescence signals were distributed uniformly in cytoplasm. CONCLUSION GJB2 mutations common in Chinese EGFP fusion protein vectors were constructed successfully. It may provide a better way to explore the reasons of nonsyndromic hearing loss common in Chinese.
Asian Continental Ancestry Group ; genetics ; Connexin 26 ; Connexins ; genetics ; Genetic Vectors ; Green Fluorescent Proteins ; genetics ; Humans ; Sequence Deletion