1.Necessity of strengthening Medical Morality for Health Adiministratice Cadre
Chinese Medical Ethics 1994;0(05):-
At present, there are the pheuomena of asking sor maney fram patients, writing out unnecessary prescription,and getting medicaine without payment among physicians. It is mot accord with the humanitarianism for patients imim China As everyone knows, the medical moraiith of health adimin'strative cadre involve that whether of not the quality of health services correspond to need of patients so, in this paper, the author discusses that how to strengthen the medical morality for health adimin's trative cadres.
2.The Effects of Calcium Antagonists on Left Ventricular Diastolic Function
Kangmei CHENG ; Ping FANG ; Xiaotao WANG
Academic Journal of Second Military Medical University 1981;0(03):-
To evaluate the effects of diltiazem hydrochloride (D) and verapamil (V) on hypertensive left ventricular (LV) diastolic function, the measurement of pulsed Doppler transmittal inflow was performed in 44 patients (22 cases in each group) before, and at 3 h and 7 h after single large dose. Sixteen patients of D group and 11 of V group received routine dose for one month. The Doppler diastolic function indexes included EDC EV/AV, EA/TA AA/TA and 1/3 FFd. The result showed that blood pressure was reduced to the same level in two groups, but improvement of LV diastolic function was more significant in D group. It is concluded that two calcium antagonists can improvement of LV diastolic function after single large dose, but improvement of LV diastolic function is not completely related to reduction of Hood pressure. After one month, since D can reduce Wood pressure and improve mycardial ischemia more markedly than V, and the negative inotropic effect is lower than V, D is superior to V in improving LV diastolie function
3.Impact of fixed specialist nurse triage on the quality of triage
Chunlian LI ; Zhiqiao WANG ; Xiaotao CHENG ; Liqing HUANG ; Xiaoling LIN
Chinese Journal of Practical Nursing 2013;(8):74-75
Objective To investigate the influence of fixed nurse specialists triage to improve the quality of patient triage.Methods Nurses were divided into the fixed nurse specialist triage group (group A) and the out-patient department rotation nursing group (group B),respectively,each group was responsible for triage of patients in clinic of medical department for five days.Then the number of two subdiagnosis error and the average daily working overtime for doctors were compared.Results A total of 3806 patients were in clinic triage in group A,165 patients had triage error.A total of 3812 patients were in clinic triage in group B,308 patients had triage error.The average daily working overtime of doctors in group A was(5.24 ± 0.37)hours,and(8.16 ± 0.58) hours in group B.The errors in triage and working overtime of doctors had significant differences between two groups.Conclusions Fixed specialist nurse triage can significantly improve the quality of patient triage in clinic.
4.Lineage conversion of mouse fibroblasts to pancreatic α-cells.
Tianjin LIU ; Liangliang SUN ; Beige JIANG ; Limei LI ; Jin CEN ; Xiaotao CHEN ; Zhaoyun ZHANG ; Qinghua WANG ; Xin CHENG ; Yongquan SHI ; Lijian HUI
Experimental & Molecular Medicine 2017;49(6):e350-
α-cells, which synthesize glucagon, also support β-cell survival and have the capacity to transdifferentiate into β-cells. However, the role of α-cells in pathological conditions and their putative clinical applications remain elusive due in large part to the lack of mature α-cells. Here, we present a new technique to generate functional α-like cells. α-like cells (iAlpha cells) were generated from mouse fibroblasts by transduction of transcription factors, including Hhex, Foxa3, Gata4, Pdx1 and Pax4, which induce α-cell-specific gene expression and glucagon secretion in response to KCl and Arg stimulation. The cell functions in vivo and in vitro were evaluated. Lineage-specific and functional-related gene expression was tested by realtime PCR, insulin tolerance test (ITT), glucose tolerance test (GTT), Ki67 and glucagon immunohistochemistry analysis were done in iAlpha cells transplanted nude mice. iAlpha cells possess α-cell function in vitro and alter blood glucose levels in vivo. Transplantation of iAlpha cells into nude mice resulted in insulin resistance and increased β-cell proliferation. Taken together, we present a novel strategy to generate functional α-like cells for the purposes of disease modeling and regenerative medicine.
Animals
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Blood Glucose
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Fibroblasts*
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Gene Expression
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Glucagon
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Glucose Tolerance Test
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Immunohistochemistry
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In Vitro Techniques
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Insulin
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Insulin Resistance
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Mice*
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Mice, Nude
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Polymerase Chain Reaction
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Regenerative Medicine
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Transcription Factors
5.Advances in hydroxylation of hydrophobic amino acid.
Dengyue SUN ; Xiaotao CHENG ; Qianqian GUO ; Panpan XU ; Zhangliang ZHU ; Huimin QIN ; Fuping LU
Chinese Journal of Biotechnology 2018;34(7):1046-1056
Hydroxy amino acids, constituents of chiral pharmaceutical intermediates or precursors, have a variety of unique functions in the research fields of biotechnology and molecular biology, i.e. antifungal, antibacterial, antiviral and anticancer properties. Biosynthesis of hydroxy amino acids is preferred because of its high specificity and selectivity. The hydroxylation of hydrophobic amino acids is catalyzed by hydroxylase, which belongs to the mononuclear non-heme Fe(Ⅱ)/α-ketoglutarate-dependent dioxygenases (Fe/αKGDs). Fe/αKGDs utilize an (Fe(Ⅳ)=O) intermediate to activate diverse oxidative transformations with key biological roles in the process of catalytic reaction. Here, we review the physiological properties and synthesis of hydroxy amino acids, especially for the 4-HIL and hydroxyproline. The catalytic mechanism of Fe/αKGDs is elucidated, and the applications of hydroxy amino acids in industrial engineering are also discussed.
6.A Case Report of Checkpoint Inhibitor Pneumonitis Caused by PD-1 Antibody-Safety and Effectiveness of Pirfenidone.
Haiming YU ; Jinying LI ; Lan YU ; Xi CHENG ; Xiaona HAN ; Xiaotao ZHANG
Chinese Journal of Lung Cancer 2021;24(7):519-525
BACKGROUND:
Immune checkpoint inhibitor associated pneumonia (CIP) is a serious side effect of immune checkpoint inhibitors. There is a consensus on the treatment of acute phase of CIP, but the treatment of pulmonary interstitial fibrosis after the acute phase is still a clinical problem to be solved.
METHODS:
The diagnosis and treatment of a non-small cell lung cancer (NSCLC) patient with immune checkpoint inhibitor associated pneumonia in the Stereotactic Radiotherapy Department of Qingdao Central Hospital were retrospectively analyzed, and literatures were reviewed.
RESULTS:
A 70-year-old male patient was diagnosed with Poorly differentiated squamous cell carcinoma of left lung with mediastinal lymph node metastasis T3N3M0 stage IIIc, EGFR/ALK/ROS1/RAF negative, PD-L1 (22c3) immunohistochemistry negative. After the progression of first-line chemotherapy, the patient was diagnosed as immune checkpoint inhibitor associated pneumonia grade 3 during second-line monotherapy with Nivolumab. After initial high-dose glucocorticoid pulse therapy, the lung computed tomography (CT) imaging and clinical symptoms of the patients were partially relieved, and then pirfenidone (300 mg tid) was given orally for more than 11 months. During the treatment of pirfenidone, the CT imaging and clinical symptoms of the patients were significantly improved, and there were no other adverse reactions except grade 1 nausea. During this period, chemotherapy and Anlotinib was given concurrently with pirfenidone and showed good safety profile.
CONCLUSIONS
This case report is the first report of pirfenidone in the treatment of CIP, which provides a new idea for the clinical practice and research of CIP treatment.
7.Loss of O-GlcNAcylation on MeCP2 at Threonine 203 Leads to Neurodevelopmental Disorders.
Juanxian CHENG ; Zhe ZHAO ; Liping CHEN ; Ying LI ; Ruijing DU ; Yan WU ; Qian ZHU ; Ming FAN ; Xiaotao DUAN ; Haitao WU
Neuroscience Bulletin 2022;38(2):113-134
Mutations of the X-linked methyl-CpG-binding protein 2 (MECP2) gene in humans are responsible for most cases of Rett syndrome (RTT), an X-linked progressive neurological disorder. While genome-wide screens in clinical trials have revealed several putative RTT-associated mutations in MECP2, their causal relevance regarding the functional regulation of MeCP2 at the etiologic sites at the protein level requires more evidence. In this study, we demonstrated that MeCP2 was dynamically modified by O-linked-β-N-acetylglucosamine (O-GlcNAc) at threonine 203 (T203), an etiologic site in RTT patients. Disruption of the O-GlcNAcylation of MeCP2 specifically at T203 impaired dendrite development and spine maturation in cultured hippocampal neurons, and disrupted neuronal migration, dendritic spine morphogenesis, and caused dysfunction of synaptic transmission in the developing and juvenile mouse cerebral cortex. Mechanistically, genetic disruption of O-GlcNAcylation at T203 on MeCP2 decreased the neuronal activity-induced induction of Bdnf transcription. Our study highlights the critical role of MeCP2 T203 O-GlcNAcylation in neural development and synaptic transmission potentially via brain-derived neurotrophic factor.
Animals
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Humans
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Methyl-CpG-Binding Protein 2/metabolism*
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Mice
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Neurodevelopmental Disorders/genetics*
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Rett Syndrome/genetics*
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Synaptic Transmission
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Threonine
8.Bone morphogenetic protein 7 mediates stem cells migration and angiogenesis: therapeutic potential for endogenous pulp regeneration.
Cheng LIANG ; Qingqing LIANG ; Xun XU ; Xiaojing LIU ; Xin GAO ; Maojiao LI ; Jian YANG ; Xiaotao XING ; Haisen HUANG ; Qi TANG ; Li LIAO ; Weidong TIAN
International Journal of Oral Science 2022;14(1):38-38
Pulp loss is accompanied by the functional impairment of defense, sensory, and nutrition supply. The approach based on endogenous stem cells is a potential strategy for pulp regeneration. However, endogenous stem cell sources, exogenous regenerative signals, and neovascularization are major difficulties for pulp regeneration based on endogenous stem cells. Therefore, the purpose of our research is to seek an effective cytokines delivery strategy and bioactive materials to reestablish an ideal regenerative microenvironment for pulp regeneration. In in vitro study, we investigated the effects of Wnt3a, transforming growth factor-beta 1, and bone morphogenetic protein 7 (BMP7) on human dental pulp stem cells (h-DPSCs) and human umbilical vein endothelial cells. 2D and 3D culture systems based on collagen gel, matrigel, and gelatin methacryloyl were fabricated to evaluate the morphology and viability of h-DPSCs. In in vivo study, an ectopic nude mouse model and an in situ beagle dog model were established to investigate the possibility of pulp regeneration by implanting collagen gel loading BMP7. We concluded that BMP7 promoted the migration and odontogenic differentiation of h-DPSCs and vessel formation. Collagen gel maintained the cell adhesion, cell spreading, and cell viability of h-DPSCs in 2D or 3D culture. The transplantation of collagen gel loading BMP7 induced vascularized pulp-like tissue regeneration in vivo. The injectable approach based on collagen gel loading BMP7 might exert promising therapeutic application in endogenous pulp regeneration.
Animals
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Bone Morphogenetic Protein 7/pharmacology*
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Cell Differentiation
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Cells, Cultured
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Collagen/pharmacology*
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Dental Pulp
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Dogs
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Endothelial Cells
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Gelatin
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Humans
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Methacrylates
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Mice
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Regeneration
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Stem Cells