Objective To observe the clinical characteristics and improve the diagnosis and treatment of right coronary artery anomalies in children.Methods The clinical characteristics,laboratory examination,treatment and prognosis were retrospectively analyzed in children with right coronary artery anomalies (complex cardiac anomalies was excluded),who were admitted into Beijing Children's Hospital Affiliated to Capital Medical University from January 2009 to December 2014.Results A total of 8 medical records of children with right coronary artery anomalies,among whom 5 cases were male and 3 cases were female,with a mean age of (7.06 ± 1.37) years old.In these 8 patients,there were 5 patients with right coronary artery originating from left coronary sinus,1 patient with right coronary artery originating from left wall of aorta,1 patient with single left coronary artery type Lipton L Ⅱ,and 1 patient with right coronary artery absence.The main symptoms included chest distress,chest pain and palpitation in elder children,but in infants,the primary symptom was poor feeding.One case of these patients represented syncope.Electrocardiogram of these patients showed ST-T wave changes,sinoatrial block,and sinus arrest.Ultrasonic cardiogram failed to discover the coronary artery anomalies.Four cases showed enlarged left ventricular end-diastolic diameter,and 1 case showed slight decrease of left ventricular ejection function.All 8 patients were given myocardial tonic with limitation in doing exercise,and clinical follow-up studies were conducted for 6 months.Four patients with enlarged left ventricular were treated with Captopril,and 3 patients of them recovered after 3 to 6 months.Two patients with sinus node malfunction were treated with permanent pacemaker implantation in other hospitals.Conclusions Right coronary artery anomaly in children is rare.Patients with cardiac ischemia and sinus node malfunction should be aware of right coronary malformation.64-section multidetector computerized tomography angiography can diagnose right coronary artery anomalies.To patients with right coronary artery anomalies,vigorous exercises should be avoided to decrease adverse cardiac events.

Heart failure is a common critical disease in children.Systolic heart failure can be caused by common diseases in children such as congenital heart disease,fulminant myocarditis and arrhythmogenic cardiomyopathy.Positive inotropic drug is the most common medication for treating systolic heart failure in children.Common inotropic drug includes digitalis,β-receptor agonist,phosphodiesterase inhibitor and calcium sensitizers.This article reviewed the using and progress of positive inotopic drugs.

AIM: To promote the clinical application of biology-psychology-social medical mode in national hospitals.METHODS: To analyze the clinical applicative characteristics of biopsychosocial medical mode to enhance to complete understanding of the scientific intension of modern medical mode by medical professionals, and thereby to improve the consciousness in the application of modern medical mode.RESULTS: Hospitals must establish the patient-centered medical service mode, which not only understand the generative process of the disease, but also pay attentions to the physiological changes of the patients, and pay more attentions to the life character and social environment of the patients as well to form patient-centered integrative diagnostic therapeutic system.CONCLUSION: Patient-centered medial service mode represents the scientific intension of biopsychosocial medical mode, which should be greatly developed to advance the transition of medical mode.Yuan Z. Clinical applicative charocteristics of biopsychosocial medical mode.

Aged ; Cardiovascular Diseases ; diagnosis ; etiology ; Cerebrovascular Disorders ; diagnosis ; etiology ; Diagnostic Errors ; Female ; Humans ; Laryngitis ; complications ; diagnosis ; Middle Aged

Alprostadil ; administration & dosage ; adverse effects ; therapeutic use ; Hearing Loss, Sudden ; drug therapy ; Humans ; Injections, Intravenous ; Lower Extremity ; Male ; Middle Aged ; Pain ; etiology

Objective: To observe the effects of 1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP) on the spatial learning ability/memory and dopaminergic neurons in the Nigra of senescence accelerated-prone 8 (SAMP8) mice. Methods: Three-month old male SAMP8 mice were injected with MPTP (36 mg/ kg,s. c.) for 5 days,and animals in the control group were injected with NS (36 ml/kg, s. c.) in the same manner. Morris water maze was used to examine the searching strategy, seeking-platform latency,and the swimming time in the aimed quadrant. Immunohistochemistry was used to observe the changes of TH-ir positive neurons in substantia nigra. Results: The number of TH-ir neurons in substantia nigra pars compacta was significantly reduced in MPTP group compared with the control group(P<0.01). Morris water maze showed that the searching strategy of animals in MPTP group was worse than in the control group, with the seeking-platform latency of MPTP mice significantly prolonged (P<0.01), the time spent in the aimed quadrant significantly decreased (P<0.01) and time in the opposite quadrant significantly prolonged (P<0.05). Conclusion: MPTP can cause damage to the dopaminergic neurons in the substantia nigra of SAMP8 mice,which is subsequently followed by deficit in the spatial learning and memory in the animals.

Animals ; Diestrus ; drug effects ; Female ; Hyperprolactinemia ; physiopathology ; Panax ; Prolactin ; blood ; Rats ; Rats, Wistar ; Saponins ; pharmacology

AIM:To study the effect of Danhong Zhiganching capsules on the experimental fatty liver in rats.METHODS: Male SD rats were treated by high fat diet for 6-week after being treated by a low dose of CCl_4 to induce fatty liver model.Then,drugs were given by oral to the rats,the contents of triglyeride,total cholesterol in serum and liver tissue,the contents of superoxide dismutase and malondialdehyde in serum and the contents of free fatty acids in liver tissue acted as indexes to determine the effect of Danhong Zhiganching capsules.RESULTS: The contents of triglyeride and total cholesterol in serum and liver tissue of rats were significantly reduced by Danhong Zhiganching capsules,and so it is with the contents of free fatty acids in liver tissue(P

BACKGROUND:Although the preparation of bone tissue engineering scaffolds can achieve satisfactory results by solvent casting/particulate leaching, in situ molding method, electrospinning, phase seperation/freeze drying, gas foaming, there are stil some deficiencies in the accuracy, pore uniformity, spatial structure complexity, personalized stents. ＜br> OBJECTIVE:To prepareβ-tricalcium phosphate bone tissue engineering scaffolds using 3D printing. ＜br> METHODS:Drug-loadedβ-tricalcium phosphate scaffolds were prepared with 3D printing, and the structure was observed to measure its porosity and mechanical strength. The scaffold was immersed in simulated body fluid for 15 weeks to observe the quality change. The scaffold was co-cultured with rat bone marrow mesenchymal stem cells for 7 days to observe celladhesion and morphological changes. Rat bone marrow mesenchymal stem cells were cultured in extracts of drug-loadedβ-tricalcium phosphate scaffold and low-glucose Dulbecco's modified Eagle’s medium containing 15%fetal bovine serum for 24, 48, and 72 hours, to determine the absorbance values and cytotoxicity grading, respectively. Meanwhile, the cells were subjected to osteogenic culture for 1 week, and ＜br> the alkaline phosphatase activities in two groups were detected. ＜br> RESULTS AND CONCLUSION:The prepared scaffold showed irregular micropores, high porosity, uniform pore distribution, high pore connectivity rate, and large compressive strength. The drug-loadedβ-tricalcium phosphate scaffold degraded completely with 15 weeks, and cancellous bone defect repair was completed in the same period. Rat bone marrow mesenchymal stem cells adhered to the surface of drug-loadedβ-tricalcium phosphate scaffold and went deep into the scaffold, showing good growth and proliferation. The activity of alkaline phosphatase was also improved. These findings indicate that the drug-loadedβ-tricalcium phosphate scaffold has good biocompatibility.

BACKGROUND: Previous studies have demonstrated that berberine represses multiple tumors and tumor stem cells, but the effect of berberine on lung cancer stem cells (LCSCs) remains unclear. OBJECTIVE: To explore the effect of berberine on the proliferation and apoptosis of LCSCs and the possible mechanism. METHODS: CD133+ LCSCs were separated from A549 cells by immunomagnetic beads. The effects of different concentrations (0, 2.5, 5, 10, 20, 40 mg/L) of berberine on the proliferation and apoptosis of LCSCs were determined by MTT and flow cytometry analysis, respectively. In order to further affirm the effect of berberine on the proliferation and apoptosis of LCSCs, the expression levels of Ki67, Bax and Bcl-2 protein were detected by western blot. In addition, to investigate the potential mechanism by which berberine exerts regulatory effects on LCSCs, the expression levels of Hedgehog signaling pathway-associated proteins (PTCH1, SHH, Gli-1 and SMO) were determined. RESULTS AND CONCLUSION: After magnetic cell sorting, the content of the CD133+ fraction was enriched up to 84.13%. MTT and flow cytometry assays showed that berberine inhibited proliferation and promoted apoptosis of LCSCs in a concentration-dependent manner. Western blot analysis showed that the expression levels of Ki67, Bcl-2, PTCH1, SHH, Gli-1 and SMO proteins of LCSCs cultured in the medium with 20 mg/L berberine were dramatically decreased compared to the control, while the expression level of Bax protein was markedly increased compared to the control. These findings suggest that berberine may inhibit proliferation and promote apoptosis for LCSCs through the Hedgehog signaling pathway.BACKGROUND: Previous studies have demonstrated that berberine represses multiple tumors and tumor stem cells, but the effect of berberine on lung cancer stem cells (LCSCs) remains unclear. OBJECTIVE: To explore the effect of berberine on the proliferation and apoptosis of LCSCs and the possible mechanism. METHODS: CD133+ LCSCs were separated from A549 cells by immunomagnetic beads. The effects of different concentrations (0, 2.5, 5, 10, 20, 40 mg/L) of berberine on the proliferation and apoptosis of LCSCs were determined by MTT and flow cytometry analysis, respectively. In order to further affirm the effect of berberine on the proliferation and apoptosis of LCSCs, the expression levels of Ki67, Bax and Bcl-2 protein were detected by western blot. In addition, to investigate the potential mechanism by which berberine exerts regulatory effects on LCSCs, the expression levels of Hedgehog signaling pathway-associated proteins (PTCH1, SHH, Gli-1 and SMO) were determined. RESULTS AND CONCLUSION: After magnetic cell sorting, the content of the CD133+ fraction was enriched up to 84.13%. MTT and flow cytometry assays showed that berberine inhibited proliferation and promoted apoptosis of LCSCs in a concentration-dependent manner. Western blot analysis showed that the expression levels of Ki67, Bcl-2, PTCH1, SHH, Gli-1 and SMO proteins of LCSCs cultured in the medium with 20 mg/L berberine were dramatically decreased compared to the control, while the expression level of Bax protein was markedly increased compared to the control. These findings suggest that berberine may inhibit proliferation and promote apoptosis for LCSCs through the Hedgehog signaling pathway.