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Background and Objectives@#The maternal-fetal interface is an important source of mesenchymal stem cells (MSCs), and it is influenced by high levels of estradiol (E2) during pregnancy. It is highly important to study the role of E2 in MSCs for both clinical application and understanding of the mechanisms underlying pregnancy related diseases. @*Methods@#and Results: In this study, differently expressed genes (DEGs) were found in the MSCs after exposure to E2. Then, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis of DEGs was performed and the integrated regulatory network of DEGs-miRNA was constructed. A total of 390 DEGs were found in the MSCs exposed to E2, including 164 upregulated DEGs (e.g. ADCY2, VEGFA and PPY) and 226 downregulated DEGs (e.g. KNG1, AGT and NPY). Additionally, 10 miRNAs (such as miR-148A/B, miR-152, miR-182) identified the integrated regulatory network of DEGs-miRNAs. Among them, the expression of ADCY2 was significantly upregulated, and this was associated with multiple changed genes. We confirmed that the expression of ADCY2 is significantly promoted by E2 and subsequently promoted the production of cAMP in MSCs. We also found that E2 promoted ADCY2 expression by inhibiting miR-152 and miR-148a. @*Conclusions@#E2 promotes the expression of cAMP through miR-148a/152-ADCY2 in MSCs. It is suggested that E2 plays a key role in the growth and function of MSCs.
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In view of the situation such as the serious shortage of anatomical teachers in medical colleges and universities,irrational personnel structure,anatomical teachers' single knowledge and weak scientific research ability,etc.,we analyzed the national policy,social impact,school leadership,personal career planning and other aspects of the problem and put forward some countermeasures to improve the treatment,improve the environment and train talents,which provided reference for the development of the discipline of anatomy,the construction of teaching staff and the reform of the basic medical education.
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ObjectiveTo understand the prevalence of maternal anemia and iron deficiency during the second and third trimesters and their relationship with adverse pregnant outcomes.MethodsData of 3 262 gravidas, who received prenatal care and delivered at Drum Tower Hospital from October 1, 2013 to October 31, 2014, were retrospectively collected and analyzed. Blood routine test was performed for all subjects both at the second (20-22 weeks) and third trimesters (38 weeks of gestation or before delivery) using automatic blood analyzer. Moreover, serum ferritin level was determined at the second trimester with microparticle chemiluminescence immunoassay. Treatment was offered to those diagnosed as iron deficiency anemia or severe iron deficiency, and the adverse pregnancy outcomes were analyzed.Chi-square test and TrendChi-square test were performed for statistics.Results(1) Out of the 3 262 women, 601 (18.42%) were diagnosed as anemia at second trimester, among which 444 (73.88%) recovered at the third trimester after proper treatment. However, there were 285 (8.74%) new-onset anemia pregnancies at last trimester. Thus, the total prevalence of anemia in pregnancy was 27.16% (886/3 262). (2) The mean serum ferritin level at the second trimester was (29.40± 30.12) ng/ml, and 1 565 (47.98%) were diagnosed as iron deficiency at the same period. (3) During the mid-term pregnancies, 345 iron deficiency anemic women were identified, which accounted for 57.40% of all anemic cases in this study. Two hundred and fifty out of the 345 women were cured at the third trimester. However, another 206 new-onset iron deficiency anemic pregnancies were identified at the third trimester. For iron deficiency anemia both at mid- and late-term pregnancy, the prevalence was 16.89% (551/3 262), which accounted for 62.19% (551/886) of all anemic patients. (4) There were more women with microcytic hypochromic anemia in the late-trimester than in the mid-trimester [19.93%(60/301) vs 4.93% (17/345),χ2=34.478,P<0.01]. (5) Among women with serum ferritin≥30,≥20- <30,≥10- <20- <10 ng/ml, the prevalence of mild anemia in mid-trimester was 13.33%(142/1 065), 14.40%(91/632), 14.71%(130/884) and 24.82%(169/681), the prevalence of new-onset anemia in the third trimester was 3.94%(42/1 065), 5.85%(37/632), 12.78%(113/884), and 13.66%(93/681) respectively. The lower the serum ferritin level, the higher the prevalence of anemia in the mid-trimester (χ2trend=30.697,P<0.01) and the new-onset anemia in the last trimester (χ2trend=69.871,P<0.01). (6) The incidence of postpartum hemorrhage in pregnancies with serum ferritin level at≥10 but <20 ng/ml was significantly higher than those normal one [20.39%(52/255) vs 11.92%(75/629),χ2=10.577,P<0.01]. Neither serum ferritin level nor anemia was associated with other adverse pregnancy outcomes.ConclusionsThe incidences of anemia and iron deficiency remain at a high level at the second and third trimesters. The lower the serum ferritin level at mid-trimester, the higher the incidence of anemia.
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Both delayed posttraumatic intracerebral hemorrhage and epidural hematoma have been well described in the neurosurgical literatures. However, delayed posttraumatic acute subdural hematoma which happens more than a week with a rapid progress after mild traumatic brain injury and causes death of patient is rarely reported. We show two such cases and briefly review the literature and discuss the probable pathogenesis of their rapid progress.
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Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Lesiones Encefálicas , Resultado Fatal , Hematoma Subdural AgudoRESUMEN
Bacterial cellulose,as a new material,due to its unique nano-fiber mesh structure with good purity,physical and chemical properties such as mechanical strength and water holding capacity,biocompatibility and adaptability,has been widely used in medicine,food,paper,textile,acoustical materials and other industries.In medical field,especially,it has been rapidly developed in recent years.This review discusses the current bacterial cellulose and its performance optimization products which relates to the medical applications.
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Objective:To explore the ameliorative effect and machanism of MSCs conditioned medium on the ovarian granulosa cells damage induced by triptolide.Methods: Cell Counting Kit 8 assay was used to examine the cell vitality of KGNs with the treatment of triptolide.The mixed enzyme digestion method were used for the isolation of human umbilical cord mesenchymal stem cells (MSCs),and flow cytometry was used for the subsequent immunotype identification.MSCs conditioned medium was collected ,and Cell Counting Kit 8 assay and PI staining was used to analyse the effect of MSCs conditioned medium on the cell vitality and cell cycle distri -bution of triptolide-damaged KGN.Real-time PCR method was used to examine the expression of cell cycle related gene CDKN1A.Results:Triptolide can inhibit KGN cell growth with the inhibition of cell vitality and cell cycle of KGN.MSCs conditioned medium did not influence the proliferation and cell cycle of normal KGN , but improved the triptolide-induced vitality inhibition and extent of S-phase arrest, and inhibit the abnormal up-regulation of CDKN1A in KGN.Conclusion: MSCs conditioned medium ameliorated the KGN cell damage induced by triptolide.
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Objective To explore the clinical features of a family with myotonic dystrophy type 1 (DM1) in order to improve the knowledge of this disease.Methods Clinical data of members from the family were collected.Electrocardiogram (ECG),electromyogram (EMG) and blood biochemistry were performed in some members of the family.Characteristics of pathology and gene of the propositi were detected.Results Anticipation was found in the family which was verified as DM1.In the all 19 patients,17 had myasthenia gravis,14 had muscle atrophy,16 had myotonia,5 had complicated with cataract,and 7 had complicated with hypophrenia.The 5 patients accepted ECG all had abnormal results,3 of them had myotonic discharge and metabolic abnormalities.Pathological analysis showed the main fibers atrophy was type Ⅰ,and the protein dystrophin expression was completely in the propositi.Conclusions The clinical manifestations of patients are various.DM1 affects eye (the lens),heart (mainly the conduction system),reproductive system besides skeletal muscle.Necessary auxiliary examinations and regular follow-up should be performed to evaluate and deal with multisystemic involvement in DM1 patients.EMG and pathological results are helpful in the diagnosis.Gene analysis can verify the disease and identify subclinical patients.
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9 adults aged 23 to 43 years old were treated with bidimensional self-ligating lingual bracket technique for upper teeth and labial ceramic or aesthetic bracket for lower teeth.After treatment the labioclination of anterior teeth in Angle's II patients decreased from 28.12°± 10.05°to 19.25°±3.12°(P <0.05),in Angle's III patients from 32.14°±4.71°to 28.15°±3.26(P <0.05).
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Objective To observe the influence of sodium phosphocreatine on the hemodynamics,human heart fatty acid binding protein (hFABP),cardiac troponin Ⅰ (cTnI) during perioperative period.Methods Forty patients (ASA grade Ⅱ to Ⅲ ) with extensive myocardial ischemia diagnosed by preoperative electrocardiogram were divided into two groups:sodium phosphocreatine group (group A) and control group (group B) with 20 cases each by random digits table. Both groups underwent routine preoperative preparation and group A were given sodium phosphocreatine 2 g/d till anesthesia induction immediately in the operation day. Hemodynamic parameters including mean artery pressure (MAP),heart rate (HR),cardiac output (CO), stroke index (SI) and pulmonary vascular resistance (PVR) were recorded respectively at 3 d before treatment (T0), anesthesia induction immediately before ( T1 ), tracheal intubation immediately after (T2),tracheal extubation immediately after (T3). And blood hFABP and cTnl levels were detected. Results Compared with group B, there was no significant difference in HR of group A at To to T3 (P ＞ 0.05 ). MAP,CO, SI at T1 to T3 of group A were significantly higher than those of group B(P＜ 0.05 ) ;whereas PVR,blood hFABP and cTnI levels were lower than those of group B (P ＜ 0.05 ). The incidence of arrhythmogenesis of group A [20%(4/20)] was lower than that of group B [45%(9/20)](P＜0.05). Conclusion Sodium phosphocreatine has good protective effect on the myocardium in the patients with myocardial ischemia during perioperative period.
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Objective To investigate the change of serum Nogo-A protein in patients with acute closed brain injury, and explore its relationship with the severity of neuronal damage and prognosis. Methods Thirty-one patients with acute closed brain injury were enrolled. Venous blood samples (2 mL) were obtained 1, 3 and 5 d after injury. Serum concentrations of Nogo-A protein were determined by ELISA. Patients were divided into mild (n =7), moderate (n = 10) and severe (n = 14) injury groups according to Glasgow coma score (GCS), and were divided into favorable prognosis (n = 23) and poor prognosis (n = 8) groups according to Glasgow outcome score (GOS). Another 20 healthy adults were served as controls. Results The mass concentrations of serum Nogo-A protein in mild, moderate and severe injury groups 1, 3, 5 d after injury were significantly higher than those in control group (P < 0.01), and the mass concentrations of serum Nogo-A protein in moderate and severe injury groups 1, 3, 5 d after injury were significantly higher than those in mild injury group (P <0.05, P <0.01). The mass concentrations of serum Nogo-A protein 1, 3, 5 d after injury were significantly higher in poor prognosis group than those in favourable prognosis group (P < 0.01). Conclusion Serum Nogo-A protein level significantly increases after brain injury, and is related to the degree of injury and prognosis.