1.Prolactin and immune system
Jiangfeng MAO ; Jieying DENG ; Yifan SHI
Chinese Journal of Endocrinology and Metabolism 2000;0(06):-
Prolactin (PRL) is a multi-functional hormone mainly from pituitary gland. PRL receptors exist ubiquitously in all tissues and organs of immune system and PRL modulates local and systemic immune activities. PRL is involved in many physiological and pathological immune responses. The function of PRL in autoimmune diseases, organ transplantation and tumor occurrence has been explored in recent years. This article is to review the progress of prolactin in the immunology-related field.
2.Nonmyeloablative stem cell transplantation followed by donor stem cell infusion for the treatment of nonmalignant haematologic diseases
Qingshan LI ; Ping MAO ; Jiade DENG
Journal of Chinese Physician 2000;0(11):-
Objective To evaluate the efficacy and complications of nonmyeloablative stem cell transplantation(NST) for the treatment of nonmalignant haematologic diseases with high-risk rejection.Methods NST was performed for two patients with severe aplastic anemia(SAA) and one with beta-thalassemia major(TM).The protocal was designed on transplantation of granulocyte colony-stimulating factor(G-CSF) primed allogeneic bone marrow cells combined with perpheral blood stem cells(PBSCs) for two SAA patients,with conditioning regimen based on anti-lymphocyte globulin and reduced dose of cyclophosphamide(CTX).One TM patient was performed transplantation of PBSCs with conditioning regimen of anti-T-lymphocyte globulin(ATG),fludarabine and reduced dose of busulfan.Cyclosporin A combined with methylprednisone was used for graft-versus-host disease(GVHD) prophylaxis.Donor stem cells infusion(DSI) were underwent for three patients at 78,99 and 44 days post transplant respectively.Results Three patients achieved engraftment successfully with mixed chimera and the lowest white blood cell(WBC) of 0.26?10~9/L,0.5?10~9/L and 1.26?10~9/L respectively.The absolute neutrophil count achieved more than 0.5?10~9/L and platelet count achieved more than 20?10~9/L at days of 12d,3d,0d and 1d,5d,0d post transplant in three patients,respectively.The haematopoiesis and chimera were improved after DSI without complications of infection and GVHD in three patients.Conclusion The stem cells engraftment is achieved successfully with donor stem cell infusion followed NST for the treatment of nonmalignant haematologic disease patients with high-risk rejection.
3.Effect of parthenolide on neointimal hyperplasia after balloon injury
Xia MAO ; Lihua GAO ; Changming DENG
Chinese Journal of Pathophysiology 2015;(12):2216-2220
AIM:To detect the effect and underlying mechanism of parthenolide ( PN) on neointimal hyperpla-sia.METHODS:After 1 week of high-fat feeding, 30 male New Zealand white rabbits (2.0~2.3 kg) were randomly di-vided into 6 groups: sham +NS, rabbits received 0.9% normal saline after sham operation; sham +DMSO, rabbits re-ceived DMSO after sham operation;balloon injury(BI)+NS, rabbits received NS after balloon injury;BI+DMSO, rabbits received DMSO after balloon injury;BI+PN low, rabbits received PN at 1 mg/kg after balloon injury;BI+PN high, rab-bits received PN at 2 mg/kg after balloon injury .The drugs were intraperitoneal injected once a day after the operation until sacrifice.After fed with high-fat diet for 4 weeks, the intima-media thickness, the expression of caspase-1, IL-1β, the lev-els of IL-8, TC, TG, LDL and HDL in the serum were measured .RESULTS:Compared with sham +DMSO group, the thickness of intima, the amount of caspase-1, IL-1βand IL-8 in BI +DMSO group were significantly increased ( P <0.05).The levels of caspase-1, IL-1βand IL-8 were significantly decreased in BI +PN high group compared with BI +DMSO group (P<0.05).CONCLUSION:Neointimal hyperplasia is suppressed by PN after balloon injury , the potential mechanism may be associated with its anti-inflammatory role .
4.Regulative effect of Xuanbai Chengqi Decoction on TNF-α and IL-1β in patients with acute respiratory distress syndrome and its mechanical indexes
Bo FENG ; Zhengrong MAO ; Yang DENG
The Journal of Practical Medicine 2017;33(8):1337-1340
Objective To study the effects of Xuanbaichengqi decoction on the regulation of inflammatory factors TNF-α and IL-1 β in patients with acute respiratory distress syndrome (ARDS) and its mechanism.Methods 60 patients with ARDS who had been hospitalized from January 2016 to August 2016 were randonly selected and then assigned to a control group (30 patients) and a study group (30 patients).Both groups received routine therapies and mechanical ventilation,and the study group received additional Xuanbaichengqi decoction.Levels of TNF-o,IL-1β and IL-10,and peak inspiratory pressure (PIP),plateau airway pressure (Pplat),PVC,forced vital capacity (FVC),forced expiratory volume in one second (FEV 1),and oxygenation index (PaO2/FiO2) were detected before and after treatment.Results Levels of TNF-α and IL-1βwere significantly lower in the study group than in the control group (P < 0.05).IL-10 level was significantly higher in the study group than in the control group (P < 0.05).And the improvement in PIP and Pplat was also significant in the study group (P < 0.05).Less adverse reactions occurred in the study group.Conclusions Xuanbaichengqi decoction can improve the indexes for respiratory mechanics and pulmonary function in patients on mechanical ventilation and reduce the inflammatory response,having a significant effect.
5.Practice and thinking of problom-based learning(PBL)model in education of prosthodontics
Qing FENG ; Yan MAO ; Xinghong LI ; Huaje DENG ; Min DENG
Chinese Journal of Medical Education Research 2006;0(12):-
Objectives Research into effect on PBL model in prosthodontics education.Methods The PBL model was performed in education of a part of prosthodontics,and education effect was evaluated by table analysis.Results PBL model is proved to be better than the multimedia education model in the training of students'self-study ability,learning initiative,problem-analyzing and problem-solving competence,and the team spirit etc.Conclution Comparaed with the multimedia education model,PBL model is of significance in some respects.
6.Study on in vitro biomineralization of enamel-binding peptide.
Wei WEI ; Zhou PENG ; Jie DENG ; Wei ZHANG ; Jing MAO
Journal of Biomedical Engineering 2014;31(1):132-135
We present the binding ability of a new peptide (CMPQVMPMC-) with dental enamel after being evaluated in the present study. Under a standard procedure, the recovery of M13 filamentous phage was greatly enhanced by displaying the peptide in phage coat protein p III. Then the cyclic peptide was synthesized using a solid method. The effect of the cyclic peptide in vitro biomineralization was tested in a single-diffusion microtiter plate gel system. Absorbance at 405 nm of each sample was recorded for 24 h at every 6 h intervals. The relatively increased values of each sample were expressed as percentages relative to the blank group (100%). The cyclic peptide resulted in a concentration-dependent delayed nucleation. In addition, the overall values of peptide groups at the end of 24 h were lower than those in the control group but much higher than those in the BSA control group.
Dental Enamel
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chemistry
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Peptides
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chemical synthesis
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chemistry
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Protein Binding
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Tooth Calcification
7.Clinical and histopathological analysis of tumors arising in nevus sebaceous: 16 case reports
Yingjun FAN ; Xiaolan LI ; Changzhi MAO ; Danqi DENG ; Xiaohong ZHOU
Chinese Journal of Dermatology 2011;44(12):883-884
Objective To assess the histopathological characteristics of tumors arising in nevus sebaceous.Methods The clinical and pathological data on 16 patients with tumors arising in nevus sebaceous were collected and retrospectively reviewed.Histopathological characteristics were analyzed.Results Of the 16 patients,12 aged ≥ 18 years,4 aged 11 to 17 years; 7 had syringocystadenoma papilliferum(SCAP),4 tubular apocrine adenoma (TAA),3 trichilemmoma,2 basal cell carcinoma (BCC),1 porokeratotic eccrine ostial and dermal duct nevus,and 1 nevus flammeus.Six patients suffered from more than one kind of tumor,of these tumors,concurrent syringocystadenoma papilliferum and apocrine adenoma predominated and were observed in 4 of these patients.Conclusion Any tumor arising from nevus sebaceous should be closely followed up.
8.Research on Structured Approach of Traditional Chinese Medicine Symptom Information
Jing SUN ; Wenping DENG ; Kai CHANG ; Shusong MAO
World Science and Technology-Modernization of Traditional Chinese Medicine 2014;(9):2015-2019
This study was aimed to investigate structured approach of traditional Chinese medicine (TCM) symptom information. Combining results of the Chinese Symptomatology Research and literature review, this study proposed a dual structure model of symptom. A total of 440 symptoms, which were screened out from the Chinese Terms in TCM and Pharmacy, were used for symptom structured attempt. The results showed that 9 symptoms and 9 attributes were identified, 201 main concept words of symptoms were extracted, and 420 symptoms with the dual structure model were structured. It was concluded that structural information model of TCM symptoms proposed in this study was feasible. However, the research methods and results are exploratory, which requires further verification.
9.Steroid 5?-reductase and 5?-reductase type 2 deficiency
Xueyan WU ; Jiangfeng MAO ; Yifan SHI ; Jieying DENG
Basic & Clinical Medicine 2006;0(03):-
Two types of steroid 5?-reductase isozymes were found in human and rats.5?-reductase type 2 deficiency in male lead to male pseudohermaphroditism and other related phenotypes.The content of this review includes:① The progress in the fields of 5?-reductase research;②Biochemical characteristics and physiological effects of 5?-reductase.③ Gene structure and mutation in 5?-reductase genes,clinical and chemical features of 5?-reductase type 2 deficiency syndrome.④Inhibitory agents of 5?-reductase and their mechanism and clinical use.The investigation in 5?-reductase help to illuminate physiological effect and sexual differentiation of androgen.The development of new inhibitory agents for 5?-reductase creats new strategy for diseases caused by imbalance of androgen action.Their mechanism and long effects of clinical use need further investigation and observation.
10.Clinical significance of the detection of the Human Papilloma Virus(HPV) DNA typing in therapy of cervical diseases
Xiuhong PENG ; Lingzhi MAO ; Xiping LUO ; Qundi DENG ; Xiaohong LIN
Chinese Journal of Primary Medicine and Pharmacy 2009;16(5):775-776
Objective To evaluate the clinical significance of the detection of the Human Papilloma Virus (HPV) DNA typing in therapy of cervical diseases. Methods 780 cases have been studied. These cases which showed HPV-DNA positive and were diagnosed by biopsy as cervical cancer or cervical intraepithelial neoplasia( CIN Ⅰ-Ⅲ) were treated by operation or physical therapy. And 6 months and 12 months after the treatment,TCT and HPV DNA test were carried out. Results The prevalence of HPV-DNA types among the 780 cases descended from HPV 16 to 52,58,18,33 and 31. Detection rates of HPV-52 and 58 were highest among the patients with CIN Ⅰ. In patients with CIN Ⅱ,CIN Ⅲ,carcinoma in situ and invasive carcinoma,the positive rate of HPV-16 was obviously higher than other genotypes,and the difference was significant (P<0. 01 ). 520 cases were followed-up after treatment,we found that HPV-DNA subsided within 3 months to 1 year in 432 cases. 88 cases still showed the HPV-DNA positive, among this group 48 cases were cytology diagnosed as normal or inflammation,but 14 cases were ASC-US,22 cases were LSIL and 4 cases were HSIL. Cytology abnormal cases were mere often detected in patients with persistent HPV-positive than in patients with HPV-negative. Conclusion Referring patients with cervical diseases the common HPV genotypes are 16,52,58,18,33 and 31. Especially HPV-16 are closely related with cervical cancer and high-level cervical intraepithelial neoplasis. HPV-DNA turn negative in most patients in 12 months after treatment. Persistent infection of HPV-DNA is related with the pathological changes persist.