1.Approach to the patient with syndrome of pituitary resistance to thyroid hormone
Jianmei CHEN ; Tingting ZENG ; Li YAN ; Hua CHENG ; Yan LI ; Mingtong XU ; Muchao WU ; Shaoling ZHANG ; Jin ZHANG ; Yuerong YAN ; Kan SUN
Chinese Journal of Endocrinology and Metabolism 2021;37(1):56-60
Syndrome of resistance to thyroid hormone(RTH)is a rare hereditary thyroid disease with various clinical manifestations and laboratory findings. RTH could be misdiagnosed and mistreated, resulting in aggravation of the disease. We reviewed the medical records of a patient with RTH over the past six years. In addition, we provided a summary of latest progress for RTH to help the clinicians to improve the understanding of the disease.
2.The effects of long non-coding RNA linc-01135 on the osteogenic differentiation capability of human inflammatory PDLSCs under static mechanical strain loading
Wanhua ZOU ; Wen QIN ; Yuerong XU ; Zaixiu QIN ; Jia LIU ; Zuolin JIN
Journal of Practical Stomatology 2018;34(2):193-197
Objective: To study the effects of long non-coding RNA linc-01135 on the osteogenic differentiation of inflammatory PDLSCs(P-PDLSCs) under 12% static mechanical strain loading. Methods: Cells were isolated and cultured from the healthy and periodontitis samples respectively to obtain healthy PDLSCs(H-PDLSCs) and P-PDLSCs. RT-PCR were used to identify the expression level of linc-01135. Lentiviruses were used to upregulate and downregulate the expression of linc-01135, and the osteogenesis gene expression were analyzed by RT-PCR and the osteogenesis differentiation capability were evaluated by alizarin red staining. Results: linc-01135 expression in P-PDLSCs was lower than that in H-PDLSCs. When the expression of linc-01135 was upregulated in P-PDLSCs before 12% SMS loading, the expression level of RUNX2, ALP, OPG was significantly increased. In contrast, the expression of RUNX2, ALP, OPG was significantly decreased when the expression of linc-01135 was suppressed. Alizarin red staining proved the same trend. Conclusion: linc-01135 can promote the osteogenic differentiation capability of P-PDLSCs under 12%SMS loading.
3.Improvement Effects of Erythropoietin Derivative Helix B Surface Peptide on Epirubicin-induced Myocardial Injury in Rats and Its Mechanism Study
Xiuyan YU ; Yuerong LI ; Huipu XU ; Dongdong ZHAO ; Weiwei CHEN ; Jiwei GUO ; Baoxin MA
China Pharmacy 2019;30(19):2608-2613
OBJECTIVE: To study the improvement effects and its mechanism of erythropoietin derivative helix B surface peptide (HBSP) on epirubicin-induced myocardial injury in rats. METHODS: SD rats were randomly divided into control group, model group, erythropoietin (EPO) group and HBSP group, with 10 rats in each group. Except for control group, other groups were given epirubicin 2.5 mg/kg intraperitoneally, once a week, for consecutive 6 weeks to induce myocardial injury model. EPO group and HBSP groups were given rhEPO 5 000 u/kg or HBSP 60 μg/kg intraperitoneally, 3 times a week (one day before medication, first day and third day after medication of epirubicin), for consecutive 6 weeks. At the beginning of the first administration, the rats were weighed at the 11th week. The cardiac function was measured by echocardiography [left ventricular end-diastolic diameter (LVIDd), ejection fraction (EF), fractional shortening (FS) and cardiac output(CO)]. The serum levels of troponin I (cTnI) and amino-terminal B-type natriuretic peptide (NT-proBNP) were determined by ELISA. mRNA expression of PI3K and Akt in myocardial tissue was detected by RT-PCR. The protein expression of p-PI3K and p-Akt in rat myocardium were detected by Western blot. RESULTS: During research period, two rats died in model group, one in EPO group and none in HBSP group. Compared with control group, body weight, the levels of EF, FS and CO were decreased significantly in model group, while the contents of LVIDd and cTnI, NT-proBNP were increased significantly; mRNA expression of PI3K and Akt as well as protein expression of p-PI3K and p-Akt were decreased significantly, above differences were statistical significant (P<0.05). Compared with model group, body weight, the levels of EF, FS and CO were increased significantly in EPO group and HBSP group, while the contents of LVIDd and cTnI, NT-proBNP were decreased significantly; mRNA expression of PI3K and Akt as well as protein expression of p-PI3K and p-Akt were increased significantly, above differences were statistical significant (P<0.05). Compared with EPO group, the contents of cTnI and NT-proBNP were decreased significantly in HBSP group, with statistical significance (P<0.05). CONCLUSIONS: HBSP can improve myocardial injury in rats as much as EPO, and has less toxity. Their mechanism may be related to the activation of PI3K/Akt signaling pathway.