The pathogenesis of heart failure is a complex progression and associated with abnormal regulation of many signaling pathways. As a cofactor of hemoglobin, myoglobin, oxidative respiratory chain, DNA synthase and other important proteins, iron plays an indispensable role in myocardial energy metabolism. Recently, a large number of studies have shown that heart failure is related to the disorder of iron metabolism. Both iron deficiency and iron overload can lead to the development of a variety of cardiomyopathy, and even progress to heart failure. Iron metabolism could be a key target for the diagnosis, prevention and treatment of heart failure. Here, we review the basic process of iron metabolism and its mechanism in heart failure, expecting to provide new clues and evidence for the treatment of heart failure.

Objective: To assess the tissue reactions of dogs to a new nanohydroxyapatite. Methods:Three dogs were used for root canal filling experiment, mandibular implanting and subcutaneous implanting experiment. AH-plus root canal sealer was used as control. The dogs were killed after implantation for 2,4 and 12 weeks separately. The tissue reaction was assessed by X-ray and light microscope examination. Results:①Root canal filling experiment: no inflammatory reaction was detected in specimens of n-HA group. In AH-plus group, implantation caused a middling inflammatory reaction after 2 weeks and 4 weeks. After 12 weeks the reaction of apical tissues was slight. ②Mandibular implanting experiment: no inflammatory reaction was showed by all n-HA groups and the group of AH-plus implanted for 12 weeks.Mild inflammatory reaction was observed in the groups of AH-plus implanted for 2 weeks and 4 weeks.③ Subcutaneous implanting experiment:after AH-plus was implanted for 2 weeks and 4 weeks, middling inflammatory reaction was observed. The group of n-HA implanted for 2 weeks showed the same reaction. No obvious inflammatory reaction was found in the other groups. Conclusion:n-HA shows better tissue compatibility than AH-plus.

Head and Neck Neoplasms ; surgery ; Humans ; Robotics

Air Pollution, Indoor ; analysis ; Environment, Controlled ; Humidity ; Radon ; analysis ; Temperature

ObjectiveTo investigate the effect of cardiopulmonary bypass (CPB) on the secretory function of islet cells in rabbits.MethodsTwenty adult New Zealand white rabbits of both sexes,weighing 2.5-3.0kg,were randomly divided into 2 groups ( n =10 each):sham operation group (group S) and CPB group.The rabbits were anesthetized with 3％ pentobarbital sodium 30 mg/kg.Blood samples were collected from the left femoral artery at 5 min after anesthesia (T1),immediately before CPB (T2 ),immediately after aortic clamping (T3 ),and at 5,35 and 75 min after aortic unclamping (T4-6) in the two groups for determination of levels of blood glucose,insulin and glucagons.Insulin resistance index was calculated.ResultsCompared with group S,the blood glucose concentration and levels of insulin and glucagons and insulin resistance index at T3-6 were significantly increased in group CPB ( P ＜ 0.05).ConclusionAlthough increase in blood glucose enhances the secretion of insulin in islet β cells,hyperglycemia cannot be compensated completely by the increased insulin during CPB in rabbits.The increase in blood glucose may be related to islet α cell resistance.

Glucagon-like peptide-1(GLP-1) is an incretin stimulated by food mainly produced and secreted from L-cells in terminal ileum, colon and rectum. It can be combined with GLP-1 receptors, and then plays a series of biological effects. In recent years, studies have shown that GLP-1 participates in the occurrence and development of many diseases.

Objective: To analyze the structure changes of New Rural Cooperative Medical System(NCMS) patients ’ hospitalization costs in a county-level city, and provide references for controlling hospitalization cost. Methods: Collect the cost details of NCMS patients in May from 2012 to 2013, and analyze the structure changes of hospitalization costs though the analysis method of structure variation degree. Results: Specialized hospital has the largest structure change of hospitalization cost, followed by first-level hospitals. Different cost items at hospital of different levels have a different direction of structure changes. Drug and examination are the major factors posing the changes in structure of hospitalization costs. Conclusion: There are significant results on the cost control since the implementation of new NCMS. Although the role of Chinese medicine to be prominent, there is still insufficient. The control of examination cost is a link which could not be ignored in future.

This article introduced what sick building syndromeSBSis. Besides its concept evolvement of definition criteria of diagnosis of SBS the relationships between SBS building-related illness BRI and multiple chemical sensitivity MCS which are the other two main diseases caused by indoor air contamination was elucidated at the same time its prevalence level characters dangerous factors and its research methods were discussed briefly. Controlling molecule contamination is thought as an important and effective method to eliminate SBS.

Objective To understand the significance of upper eyelid swelling in early diagnosis and treat-ment of infectious mononucleosis(IM).Methods We early diagnosed these patients IMwith upper eyelid swelling, fever and lymph node enlargement under five days course of disease,and compared the coincidence rate with last diag-nosis,investigated the rate of upper eyelid swelling in non -early diagnosis cases with the course of disease above one week,and evaluated the effect of ganciclovir in treating IMin two groups.Results The coincidence rate was 97.14%in early and last diagnosis groups,and the rate of upper eyelid swelling was 60.2% in non -early diagnosis group. There were significant differences in disappear of upper eyelid swelling,fever and lymph node enlargement in the two groups.Conclusion Upper eyelid swelling has important significance in early diagnosis and treatment of IM.

Objective To study the effect of Schwann cell enclosed by antibody of neural cell adhesion molecule L1 on injured spinal cord. Methods Over 98% of the purity of Schwann cells obtained from bilateral sciatic nerves of 2 days newborn SD rats, the concentration of Schwann cells was about 2.5?104 /?l. The Schwann cells were enclosed by the antibody of neural cell adhesion molecule L1 using co-culture. The adult SD rats (weight 200-250 g) were used to establish the model of spinal cord injury by hemi-transection at the left side of T10 level. The animals were divided into three groups; the SC group was transplanted with 20 ?l suspension Schwann cells; the anti-L1 group with 20 ?l Schwann cells enclosed by antibody of neural cell adhesion molecule L1; and the control group was injected solely with normal saline to the injured cord. Eight weeks later regenerated neural axons were investigated through horseradish peroxiase HRP retrograde trace immunohistochemistry of neurofilament and Western blot. Results Few regenerated neural axons appeared in the control group; some of regenerated neural axons could be observed in anti-L1 group; plentiful and bulky regenerated neural axons were found in SC group. The group with antibody had significant less HRP positive neurons and neural axons than the group without antibody. Western blot showed that the quantity of neurofilament in the anti-L1 group was only two thirds of the SC group. Conclusion Schwann cell-derived neural cell adhesion molecule L1 is able to enhance the neural axon regeneration of injured spinal cord.