Pediatric sleep-disordered breathing, also known as obstructive sleep apnea and hypopnea syndrome (OSAHS) in children, is caused by obstruction of upper airway, characterized by repetitive pauses in breathing during sleep despite the effort to breathe, and usually leads to reduction in oxygen saturation. Due to the importance of sufficient oxygen in growth and development, many children patients suffer from abnormal secretion of growth hormone at night, and also their activity and resting of cerebral cortex during sleep. Therefore, they face great risks in keeping normal physical growth, forming mental behavior, building up learning ability and shaping personalities. It is a very important interdisciplinary subject, yet still much remains unclear about the disease. Oral medicine is one of the subjects that show increasing importance in prevention and treatment of OSAHS in children. On one hand, due to the special means of the field, such as cephalometric, it can diagnose and monitor the development of craniofacial structures, especially the upper airway. On the other hand, it can provide treatments which can both improve breath during sleep and consequent dental facial deformities. Most typical treatments include mandibular sagittal growth stimulation, transverse maxillary palatal expansion and maxillary protraction. Oral medicine provides additional treatment apart from traditional adenectomy and tonsilectomy to improve ventilation. It not only directly helps to improve deformities caused by sleep-disordered breathing in OSAHS children with indications, but also helps to avoid many of physical and mental complications, which will in turn benefit their life quality. Also, it may prospectively provide insights in treatment and prevention of OSAHS in adults.
Adult ; Cephalometry ; Child ; Humans ; Mandible ; Maxilla ; Palatal Expansion Technique ; Sleep Apnea Syndromes ; Sleep Apnea, Obstructive

Objective To discuss the clinical characteristics of gastric stromal tumor (GST),as well as their diagnosis and treatment.Methods The clinical and pathological data of 18 patients with GST were retrospectively analyzed.Results The chief clinical manifestations included abdominal pain or discomfort,gastrointestinal bleeding and the abdominal mass.Only a rectum stromal tumor in 1 case diagnosed before operation.All the 18 patients were treated surgically,of all 17 cases were resected completely,1 case was rssected palliatively. The microscopic pathological morphology were exclusively fusiform cells,immunohistochemical analysis display positive reactivity for CD117 ( 16/18 ),CD34 ( 11/18 ),positive reactivity for CD117 and CD34 (15/18).Conclusion The confirmed diagnosis rate of preoperative-GIST is low and digestive tract symptoms have no specific.The diagnosis of GST mainly depends on pathologicl analysis.The size of the tumor is the important marker to the diagnosis of benign of malignant GST.At present,the operation is still the main method to treat GST.Appropriate treatment with Glivec can improve the prognoeis of patients with GST.

The diseases of esophagus and stomach possess highest morbidity in China. For decades the interventional radiology has effectively solved a lot of clinical puzzles upon the lesions of esophagus and esophagogastric junction. Rapid development and extensive application offen induce the exaggeration of indication and improper choice of the proceduce, resulting in clinical disposal for various complications. Scientific attitude should be taken on the utilization of interventional method: possessing rich imaging and clinical knowledge; understanding the property of various interventional instruments; strictly grasping indications of arterial infusion chemotherapy, balloon catheter dilation and stent placement; perfectly mastering the operation technology; well controlling complications.

Obstructive sleep apnea hypopnea syndrome(OSAHS) has been the main research area of the Dental Therapy Center for Sleep Apnea,Peking University School and Hospital of Stomatology.The basic research in the center includs: epidemic survey of OSAHS and snoring in a Beijing population,setting up the cephalometrc and MRI standard of airway and surrounding structures for non-snoring Chinese,aetology exploring OSAHS from views of airway size,craniofacial form,neck circumference and genioglossus muscle activity.Clinically,different dental appliances were developed.The treatment effects of the oral appliances for OSAHS patients were evaluated quantitatively.Two and three dimension changes of the airway and surrounding structures,genioglossus muscle activity,as well as snoring loudness following mandible advancing and opening were studied.Besides,research was expended to OSAHS in children recently.Under the support of National Nature Science Foundation 7 PhD and 3 MS students have graduated.More than 60 papers were published domestically and abroad and two awards were received from the National Ministry of Education and Chinese Medical Association in the past 10 years.This paper is a review of the past and current situation of dental research on OSAHS in China.

Objective To explore the clinical characteristics of coronary heart disease (CHD) companied by type-2 diabetes mellitus (DM) and features of their coronary angiographies. Methods The data of clinical characteristics and coronary angiography results of 108 CHD cases with T2DM and 103 CHD cases without T2DM were compared and analyzed. Results Compared with the cases of CHD without diabetes mellitus, the cases of CHD with T2DM exhibited significantly increased incidence rates of hypertension and dyslipidemia. The body mass index and serum uric acid level also increased obviously. The main manifestation of dyslipidemia of CHD patients with T2DM was the higher levels of triglycerides and lower level of serum high-density lipoprotein cholesterol. And the severe coronary artery disease and lower left ventricular ejection fraction were often found in CHD patients with T2DM Conclusion CHD patients with type-2 DM tend to have multiple cardiovascular-risk factors, and often have multi-branches lesion and more severe lesions.To treat cardiovascular risk factors actively is very important to prevent the CHD and improve its prognosis.

Objective:To investigate the abnormality of the craniofacial and upper airway structure in adults with obstructive sleep apnea syndrome(OSAS).Methods:The craniofacial skeletal and upper airway morphology of 31 male adult patients with OSAS was measured by cephalometry and compared with that of a control group consisting of 16 male asymptom adults. Results:The significant aberrations in the OSAS group were: relative increased ANB and NA/PA(P

Objective: To design and develop a preadjusted appliance based on Chinese normal occlusion, and to apply it in treatment of malocclusion cases.Methods: According to the results of the research performed in Department of Orthodontics, School of Stomatology of Peking University about teeth position and morphology of 67 Chinese with normal occlusion, the preadjusted appliance with the optimal prescription for Chinese has been designed and developed (Z1 appliance). Z1 appliance has been used in treatment of malocclusion cases. The efficiency of Z1 appliance was evaluated. Results:The treatment of 30 non-extraction cases and 16 extraction cases has been completed with Z1 appliance. A quite good result of clinical application of Z1 appliance was represented. Conclusion: Z1 appliance could be used in treatment of Chinese malocclution. The bracket base for anterior teeth was too thick and need more improvement.

Objective To investigate the protective effects of melatonin and possible mechanisms on rats with alco-holic fatty liver (AFL). Methods All rats were randomly divided into 4 groups: normal group (n = 10), model group (n = 12) and melatonin groups (10 mg / kg, 20 mg / kg; n = 10, respectively). The model of rats’ alcoholic fatty liver was induced by intragastric influsion of ethanol for 8 weeks. The melatonin groups’ rats received melato-nin by intraperitoneal injection after intragastric infusion of ethanol. Histopathological changes were evaluated by hematoxylin and eosin staining. The expressions of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) were detected by immunohistochemical methods. The detection of aspartate aminotransferase (AST) levels and alanine transarninase (ALT) levels and the total bilirubin ( TBIL) levels in serum were provided by routine laboratory methods using an autoanalyzer. The levels of malondialdehyde ( MDA) and activities of glutathione peroxidase ( GPx) were measured by spectrophotometry. Results Compared with the normal group, the liver cells of the mod-el group showed obvious steatosis and significant swelling. However, less degree and less extensive of steatosis and swelling were observed in the melatonin groups. Compared with the normal group, the levels of ALT, AST and TBIL in serum and the levels of MDA in liver homogenates were significantly increased in the model group (P <0. 01), and the activities of GPx were distinctly decreased in the model group(P < 0. 01). But in the melatonin groups, the levels of ALT, AST and TBIL in serum and the levels of MDA in liver homogenates were decreased (P< 0. 01), and the activities of GPx were increased (P < 0. 01). Additionally, melatonin lessened the expression of TNF-α and IL-6 in liver obviously (P < 0. 01). Conclusion Melatonin may inhibit the development of alcoholic fatty liver and its possible mechanism is the ability to resist oxidative stress and lessen the expression of TNF-α and IL-6 and other relevant factors in liver.

Objective To systemically evaluate the clinical therapeutic effect of combined traditional Chinese medicine (TCM) and western medicine for treatment of acute heart failure by Meta analysis. Methods The America National Library PubMed and China Biomedical Literature Data System (SinoMed), China National Knowledge Infrastructure (CNKI), VIP Data Resource, Wanfang Data Resource, Chinese TCM Database Retrieval System were searched from 1990 to May 2014 to identify the formally published randomized controlled trials (RCTs) in which the effects of combined TCM and western medicine (experiment group) or simple western medicine (control group) for treatment of patients with acute heart failure were reported. The Cochrane system 4.2.2 quality evaluation standard in Evaluation Handbook was applied to assess the methodological quality of literature. The Cochrane Collaboration's RevMan 5.2 software was used to seek the literatures consistent to the criteria of enrolling into the study for Meta analysis. Results There were 18 RCTs, and all together 1 374 cases were included in the data. The grade of methodological quality of the enrolled studies was of high migration. Meta analysis showed: compared with the control group, the clinical efficacy in experimental group was significantly higher [odds ratio (OR) = 5.04, 95% confidence interval (95%CI): 3.31 - 7.69, P < 0.000 01]; the level of type B natriuretic peptide (BNP) was significantly reduced [standardized mean difference (SMD) = -1.31, 95%CI: -1.78 to -0.83, P<0.000 01];left ventricular ejection fraction (LVEF) was significantly increased (SMD=0.79, 95%CI:0.52-1.07, P < 0.000 01); the therapeutic effect on TCM syndrome was significantly elevated [categorical variables: relative risk (RR) = 1.30, 95%CI: 1.06 - 1.59, P = 0.01; quantitative variables: mean difference (MD) = -1.67, 95%CI: -2.48 to-0.86, P<0.000 1] and cardiac diastolic function was significantly improved (SMD=0.64, 95%CI:0.05-1.24, P<0.05). Conclusions The clinical therapeutic effects of combined TCM and western medicine are significantly higher than those of simple western medicine for treatment of patients with acute heart failure. However, the low quality of the reports involved in this study limits the reliability of this conclusion.

Objective To improve the understanding of pelvic lipomatosis.Methods The clinical features of eight patients(males,aged 26-64years) with pelvic lipomatosis who were admitted to Peking Union Medical College Hospital from 1983 to November 2006 were reviewed.The clinical and pathologic features,treatment and prognosis were analyzed.The course of disease before admission was(95?82)months,The period of follow-up was(15?32)months,five cases under went upper tract urinary diversion,one case had urinary tract diversion and received steroids,one case received steroids treatment only.Results Four cases had cystitis glandularis,frequency and urgency of micturition were observed in three cases.Dysuria in three cases,hematuria in three cases,and hypertension in five cases were recorded during the course of disease.Renal insufficiency was observed in all of eight cases(Mean Ccr was 76?18mL/min).All cases had abnormal features in their image investigation,which indicated excessive pelvic fat directly or indirectly.Six cases had upper tract distention.Four cases underwent pelvic tissue biopsy.The result of biopsy was fat-vessel tissue.Their symptoms,not renal function,were relieved after treatment.Conclusion The symptoms of pelvic lipomatosis are atypical,they had renal insufficiency,and their diagnosis mainly depends on image investigation and pathologic examination.