Adolescent ; Aged ; China ; epidemiology ; Humans ; Mental Disorders ; epidemiology ; prevention & control ; therapy

Asthma is the most common chronic respiratory disease in children. Currently,inhaled corti-costeroids is the most effective drug for asthma,however,there are some adverse effect by long-time using. Ac-cording to recent literature,long-time treatment with inhaled corticosteroids may inhibit height growth. But this suppression only occurs within early stage of asthma treatment, and have no effect or slight effect on adult height. The adverse effects of inhaled corticosteroids for height are also related to its iypes,dose and usage.

Objective To explore the clinical characteristics of cerebral infarction accompanied with central serous chorioretinopathy (CSCP).Methods The clinical data of a patient with cerebral infarction and CSCP were reviewed retrospectively.Results The patient was a middle-aged male and mainly presented with dizzy,dystaxia on walking and dysopia.However,he had no history of hypertation,diabetes,hyperlipidemia and related vasculitis.Brain MRI scanning showed infarction in cerebellar hemisphere.Fluorescein eyeground angiography demonstrated the leakage focus on the retina of right eye.All of the presentations were obviously remissive with the treatments of improving micro-vascular circulation and nerve nourishment.Conclusion For those cases of cerebral infarction without related risk factors of cerebral stroke but presenting with dysopia,the possibility of CSCP should be considered.

Objective Duchenne muscular dystrophy (DMD) is a lethal inherited disorder; the main pathogenesis is deficiency of dystrophin Our study is to observe dystrophin expression in myofibers of mdx mice (an animal model of DMD) transplanted with different bone marrow cells Methods Bone marrow cells, suspension cells and stromal cells were cultured in vitro from C57BL male mice, and these cells were transplanted respectively by tail vein of irradiated mdx mice Dystrophin expression of female mdx mice was detected dynamically By using PCR technique, Y chromosome specific sex determining regions were detected dynamically with the blood of transplanted female mdx mice Results Few dystrophin expression in myofibers (

Objective To investigate the underlying causes, clinical characteristics, treatment and prognosis of non-traumatic pneumomediastinum (PM) in children. Methods A retrospective analysis of the clinical data of 64 children diagnosed with non-traumatic PM in Yuying Children’s Hospital Affiliated to Medical University from Jan 2003 to Dec 2013 was performed. Nineteen children with SPM and the other 45 with clear causes of non-traumatic PM were divided into two groups for comparison. According to age, 64 cases were divided into 0-6y group and 6-18y group for further comparison. Results A total of 64 patients with non-traumatic PM were collected. Nineteen of them aged 14.90±2.00 y had SPM with unknown etiology, and 84.2%were male. The other group of 45 patients aged 4.26±4.45y, and 55.6%of this group were male. The common causes were pneumonia or other lower respiratory tract infection, asthma and foreign body inspiration. The patients with SPM were always with chest pain. While the patients with clear causes of non-traumatic PM were more complained of dyspnea, coughing, subcutaneous emphysema. The treatment of patients with SPM was bed rest, oxygen uptaking, antitussive, anti-infection and other conservative therapy. All the patients with clear causes of non-traumatic PM had favorable prognosis with the treatment of actively curing primary disease and timely mediastinal air drainage, subcutaneous air drainage and thoracic close drainage. In 35 cases younger than 6 years old, the most common causes were pneumonia or other lower respiratory tract infection, none had SPM. In 29 cases older than 6 years, 19 of them had SPM. Conclusions Etiologies of pneumomediastinum varied with age in children,which should be vigilantly examined, especially for those younger than 6 years old. The key of the treatment to non-traumatic PM with clear etiologies was to treat its primary disease.

Objective To find out more extrema simultaneously including global optimum and multiple local optima existed in multi-modal functions. Methods Germinal center is the generator and selector of high-affinity B cells, a multicellular group's artificial immune algorithm was proposed based on the germinal center reaction mechanism of natural immune systems. Main steps of the algorithm were given, including hyper-mutation, selection, memory, similarity suppression and recruitment of B cells and the convergence of it was proved. Results The algorithm has been tested to optimize various multi-modal functions, and the simulation results show that the artificial immune algorithm proposed here can find multiple extremum of these functions with lower computational cost. Conclusion The algorithm is valid and can converge on the satisfactory solution set D with probability 1 and approach to global solution and many local optimal solutions existed.

Objective To explore the clinical characteristics of adrenoleukodystrophy (ALD). Methods The clinical date of 14 ALD patients were analyzed retrospectively. Results The 14 ALD patients were boys,the symptoms occurred slowly from 1 to 13 years old. The clinical manifestations of all the ALD patients were mainly mental retardation and disturbances of movement of extremities,9 cases had visual disorders,6 cases had auditory disorders and 13 cases had dysarthria,5 cases had seizure and 6 cases had increased skin pigmentation. The level of plasma very long chain fatty acids (VLCFA) in 5 csaes were increased at some degree.The brain CT from 2 cases and MRI from 12 cases showed butterfly-like focus in periventricle areas in the white matter bilaterally. Lace-like high intensity lesions were observed in 3 cases. Conclusion The clinical features of ALD are progressive dysnoesia,limbs dyskinesia,hypropsia,hearing loss etc,dysfunction of adrenal cortex,the level of plasma VLCFA increased,and with characteristic changes of skull imageological.

Objective To explore the occurence,clinical characteristics and treatment of Mycoplasma pneumonia complicated with embolism in children.Methods Twenty-three cases with Mycoplasma pneumonia complicated with embolization were retrospectively analyzed from January 1990 to December 2012.Results The ages of cases were from 4 years old to 13 years old,and fifteen cases were male,eight cases were female.Nineteen cases with single-shot embolism included four cases of lower limb venous thrombosis,one case of internal carotid artery thrombosis,nine cases of cerebral infarction,two cases of cardiac infarction,two cases of splenic infarction,one case of pulmonary infarction; and the other four cases were multiple embolism,two cases combined pulmonary embolism and lower limb deep vein thrombosis,one case combined cardiac embolism and pulmonary embolism,one case combined internal carotid artery and the brain embolism.In addition,eight cases had temporary anti-cardiolipin antibody IgM,two cases combined protein C decrease,one case merge protein S decrease,and one case was lack of AT-Ⅲ.At last,two children died,the rest all recovered well after thrombolysis and anticoagulation therapy.Conclusion Mycoplasma pneumoniae has hypercoagulative state and potentialized to thrombosis,especially for children with high risk factors of thrombosis.Early diagnosis and anticoagulation and thrombolysis treatment actively is the key to better prognosis.

AIM: To observe the effects of overload exercise on skeletal muscles in X-linked muscular dystrophy(mdx) mice.METHODS: Mdx mice and C57 mice were carried out swimming and hanging tail movement tests (mdx mice as control did not exercise). It lasted for 13 minutes each time per day, and lasted 3 days. Evans blue was injected into tail vain. The mice were killed the next day, and the hind limbs were taken photographs after skins were flayed. The gastrocnemius muscles and diaphragms cryostat sections were made. Under a fluorescence microscope, Evans blue staining was seen. Then the sections were tested by routine HE staining, the histological change of muscles was analyzed under a light microscope.RESULTS: Many blue colored longitudinal lines were observed in skeletal muscles of mdx mice, whereas they were hardly seen in control mdx and C57 mice. Under a fluorescence microscope, some muscle fibers of mdx mice were stained with Evans blue, few muscle fibers of control mdx mice were stained, and C57 mice were not. Under a light microscope, HE staining of muscles showed some degenerated muscle fibers became round in shape and the myonuclei became condensed, or necrotic fibers had amorphous structures, most of them in the degenerated and necrotic fibers of diaphragms C57 mice did not have these changes.CONCLUSION: Overload exercise did harm to skeletal muscles of mdx mice; Vital staining with Evans blue is useful not only for distinguishing degenerating muscle fibers, but also for studying the degeneration process in dystrophin-deficient muscle.