Objective To study the expressions of fragile histidine triad(FHIT) in cervical cancer and cervical intraepithelial neoplasia(CIN),and the relationship between the FHIT expression and the tumor occurance and development in cervical cancer.Methods The expressions of FHIT in cervical cancer tissue of 35 patients,39 CIN samples and 16 normal cervix tissue were detected by SP immunohistochemical method and the relations with occurance,pathologic type,histological grade,clinical pathologic staging and lymph node metastasis in cervical cancer were analyzed.Results FHIT expressed in normal cervical tissue,CIN and cervical cancer tissue,which showed a decreasing trend(P0.05).(Conclusion Expression)of FHIT has close relations with the tumor occurance and development in cervical cancer,which could provide a reference foundation to monitor lapse of CIN and judge prognosis of cervical cancer.

Objective To observe the effect of lowering intraocular pressure(IOP) treatment on ocular hemodynamics in patients with nonarteritic anterior ischemic optic neuropathy (NAION).Methods A total of 68 patients with NAION (68 eyes) were enrolled in this study.The patients were randomly divided into treatment group (38 eyes of 38 patients) and control group (30 eyes of 30 patients).All the patients were received methylprednisolone pulse therapy (200 mg,three days),vasodilator therapy with intravenous infusion of Xueshuantong solution (300 mg),optic nerve nutritional therapy with mouse nerve growth factor (30 μg) and acupoint injection in temporal with compound anisodine (2 ml).The total course was 10 days.The patients of treatment group received IOP lowering treatment to reduce the IOP to ≥ 8 mm Hg (1 mm Hg=0.133 kPa) or in a 30％ reduction.The patients of control group received no IOP lowering treatment.The peak systolic velocity (PSV),pulsatility index (PI) and resistance index (RI) of ophthalmic artery (OA),central retinal artery (CRA) and short posterior ciliary arteries (PCA) before and after treatment were comparatively analyzed by color doppler flow imaging.Results The differences of PSV (t=1.023,1.145,0.569),PI (t=0.679,0.956,1.634) and RI (t=0.816,1.657,0.998) of OA,CRA and PCA before treatment in treatment group and control group were not statistically significant (P＞ 0.05).Compared with before treatment,PSV (t=3.150,7.650,3.520) and PI (t=2.420,5.430,7.650) of OA,CRA and PCA increased obviously (P＜0.05),RI of OA,CRA and PCA decreased obviously (t=5.320,9.640,18.360; P＜0.05) after treatment in treatment group.In control group,the differences of PSV (t=2.090,-2.550,-2.100) and PI (t=-2.310,-2.230,-4.490) of OA,CRA and PCA between before and after treatment were not statistically significant (P＞0.05) ; but the differences of RI of OA,CRA and PCA between before and after treatment was statistically significant (t=2.970,2.160,2.690μ P＜0.05).Compared with control group,PSV (t=2.632,2.135,5.364) and PI (t=3.251,2.432,4.243) of OA,CRA and PCA increased obviously (P＜0.05),RI of OA,CRA and PCA decreased obviously (t=3.664,2.938,4.324; P＜0.05) after treatment in treatment group.Conclusion Lowering intraocular pressure treatment can improve the ocular hemodynamics in NAION patients.

KDM5B is a histone H3K4me2/3 demethylase. The PHD1 domain of KDM5B is critical for demethylation, but the mechanism underlying the action of this domain is unclear. In this paper, we observed that PHD1KDM5B interacts with unmethylated H3K4me0. Our NMR structure of PHD1KDM5B in complex with H3K4me0 revealed that the binding mode is slightly different from that of other reported PHD fingers. The disruption of this interaction by double mutations on the residues in the interface (L325A/D328A) decreases the H3K4me2/3 demethylation activity of KDM5B in cells by approximately 50% and increases the transcriptional repression of tumor suppressor genes by approximately twofold. These findings imply that PHD1KDM5B may help maintain KDM5B at target genes to mediate the demethylation activities of KDM5B.
Binding Sites ; genetics ; Crystallography, X-Ray ; Gene Expression Regulation ; HEK293 Cells ; Histones ; chemistry ; metabolism ; Humans ; Jumonji Domain-Containing Histone Demethylases ; chemistry ; genetics ; metabolism ; Lysine ; chemistry ; metabolism ; Magnetic Resonance Spectroscopy ; Methylation ; Microscopy, Fluorescence ; Models, Molecular ; Mutation ; Nuclear Proteins ; chemistry ; genetics ; metabolism ; Peptides ; chemistry ; genetics ; metabolism ; Protein Binding ; Protein Structure, Tertiary ; Repressor Proteins ; chemistry ; genetics ; metabolism

Objective:To explore the early identification, diagnosis and pathogenesis of childhood acute lymphoblastic leukemia (ALL) complicated with cytokine release syndrome(CRS).Methods:The clinical data of childhood ALL complicated with CRS admitted to Shenzhen Children's Hospital in February 2021 were retrospectively analyzed. The relevant literature was reviewed.Results:The little girl was 2 months and 11 days of age and was diagnosed with ALL with MLL rearrangement positive by bone marrow aspiration because of abdominal mass and abnormal hemogram. She had recurrent high fever with pulmonary imaging characteristic changes during the early intensive induction chemotherapy, accompanied by the elevated interlukin (IL)-2, IL-6, IL-10 and interferon (IFN)-γ. Finally, she was diagnosed with ALL complicated with CRS. Glucocorticoid therapy showed a good efficacy and her clinical symptoms improved.Conclusions:ALL complicated with CRS is essentially induced by cytarabine syndrome drugs in the chemotherapy. The main clinical manifestations include recurrent high fever accompanied by the elevated IL-2, IL-6, IL-10 and IFN-γ. The symptomatic and supportive therapy is usually based on glucocorticoids. Early identification and diagnosis can reduce adverse drug reactions and improve the life quality of children.