Objective:The paper provided the basis of morphology to treat severe obstructive sleep apneasyndrome (OSAS) by applying hard palate short uvulopalato-pharyngoplasty (HPS-UPPP) in clinic.Methods:The curve length of hard palate and soft palate,the distance between the greater palatine foramenwere measured with vernier caliper and the position relation of the nerve and vessels passing throughgreater palatine foramen was observed in 100 oranium and 50 cadaver. Results:The curve length of hardpalate was 49.3± 0. 28 mm;the curve length of soft palate was 26.1±0. 30 mm;the distance between thegreater palatine foramen was 27.3±0. 24 mm. Conclusion:The results have the guiding significance in re-moval of length of hard palate and soft palate ,and the way of operation.

Objective:To study the effects of obesity induced by high-fat diet on T lymphocyte subsets in the adipose tissue in mice.Methods:C57BL/6 male mice were randomly divided into 2 groups, the normal control group and high-fat diet group.After feeding 16 weeks, serum was separated and CHOL, TG, HDL, LDL and glucose levels were measured by automatic biochemical analyzer.The concentrations of TNF-αwere determined by ELISA kit.FACS was used to analyze the number of T cells and the percentage of subgroup in epididymal fat adipose tissue.Results:Compared with control group,body weight,weight gain,epididymal fat pad weight,perirenal fat weight,blood lipids,glucose and TNF-αwere significantly increased in high-fat diet group,but there were no difference in the thymus index and spleen index between the two groups.Compared with the control group,the mice fed a high-fat diet had increasing proportion of CD3+T cells,CD4+T cells and CD8+T cells in adipose tissue and there was a significant increase on the proportion of Th1 and Th17 sublineage in the HFD group.Conclusion:High-fat diet induced obesity can lead to the increasing proportion of CD3+T cells,CD4+T cells and CD8+T cells in epididymal fat pads and generate a progressive Th1 and Th17 bias.

ObjectiveTounderstandthetrendsandepidemiologicalcharacteristicsofsexuallytransmitteddiseases(STDs)inChinaandprovidescientificbasisformakingcontrolstrategies.MethodsDuringtheperiodof1991～2001,thecase-reportingdataof8kindsofnotifiableandmonitoringSTDs,collectedfrom31provinces,autonomousregionsandmunicipalities,wereanalyzedwithepidemiologicalmethods.Results①Epidemictrends:Duringthisperiod,theincidenceof8kindsofSTDssteadilyincreasedfrom175528(15.48per100000population)in1991to859040(68.91per100000population)in2000.Theaverageannualgrowthofincidencewas19.30%,witharangeof2.59%～36.88%.However,thereportedcasesin2001were795612withadecreaseof7.38%comparedwiththosein2000,anditwasthefirstdecreasesinceSTDcaseswerereportedfrom1987.②Geographicaldistribution:Thehigh-incidenceareasweretheZhujiangRiverDelta,YangtzeRiverDelta,MinjiangRiverValley,NortheasternChina,andBeijing,Tianjin,andChongqingManicipalities,withtheincidencerateofover70～100casesper100000populationafter1997,andtherewereveryhighratesofincidenceover1000casesper100000populationinsomeareas.Thelow-incidenceareaswerenorthChina,partsofCentralChina,NorthwesternChinaandSouthwesternChina,withtheincidenceratesoflowerthan30～50per100000population.③Populationdistri-bution:Themaletofemaleratiodecreasedfrom1.60∶1～1.69∶1intheearly1990sto1.35∶1～1.40∶1inthelate1990s.STDincidencerateswerehighestinthe20～39agegroup,andthereportedSTDcasesofthisagegroupaccountedforover80%oftotalcases.ConclusionSexuallytransmitteddiseasesinChinahavebecomeaseriouspublichealthproblemandtheeffectiveinterventionprogrammesagainstSTDsmustbeimplementedacrossthecountry.

Due to the ability of overcoming both the dimensionality and the collinear problems of the spectral data, partial least squares ( PLS ) is in ever increasingly used for quantitative spectrometric analysis, especially for near-infrared spectrum, mid-infrared spectrum and Raman spectrum. In this work, an improved PLS algorithm is proposed for efficient information extraction and noise reduction. The spectral variables are clustering to several subsets, and several sub-models are built for each subset. Then, the sub-models are re-weighted and ensemble to the final model. Experiments on two near-infrared datasets ( octane number prediction in gasoline and nicotine prediction in tobacco leafs ) demonstrate that the new method provides superior prediction performance and outperformed the conventional PLS algorithm, and the root mean square error of prediction ( RMSEP) is reduced by 32% and 22%, respectively.

OBJECTIVETo explore the value of color doppler ultrasound examination of thyroid in occupational health care of radiation-exposed physicians.

METHODSOne hundred and thirty-four radiation-exposed physicians (observation group) and sixty-eight non-radiation-exposed physicians (control group) received color doppler ultrasound examination of thyroid using ALOKA SSD-4000 color doppler ultrasonic diagnostic apparatus, and the results were compared between the two groups.

RESULTSThe anteroposterior diameters of the left lobe, right lobe, and isthmus of the thyroid in the observation group were significantly larger than those in the control group (P < 0.01). Compared with the control group, the observation group had significantly larger internal diameters and peak blood flow velocities during systole of the right superior thyroid artery (P < 0.05, P < 0.05). There were no significant differences in detection rates of thyroid nodules and lymph nodes between the observation group and the control group (18.7% vs 13.2%, P > 0.05; 6.7% vs 1.5%, P > 0.05). The radiation-exposed physicians were exposed to low-dose ionizing radiation with a dose between 0.14 and 1.67 mSv/a.

CONCLUSIONThe color doppler ultrasound examination of the thyroid can detect early changes in the thyroid of radiation-exposed physicians exposed to long-term and low-dose ionizing radiation.

Humans ; Lymph Nodes ; Occupational Exposure ; analysis ; Occupational Health ; Physicians ; Radiation Exposure ; analysis ; Radiation, Ionizing ; Thyroid Gland ; diagnostic imaging ; radiation effects ; Ultrasonography, Doppler, Color

Objective To evaluate intraoperative placement of bile duct decompression drainage tube in CBD primary suture after laparoscopic choledocholithotomy.Methods 152 patients undergoing laparoscopic choledocholithotomy were divided into group A (placement of bile duct decompression drainage tube during operation,82 cases) and group B (no decompression drainage tube placement,70 casas).Results There was no significant difference in operative time and intraoperative bleeding between the two groups (P ＞ 0.05).In group B patients the abdominal drainage tube indwelling time,abdominal drainage volume,peritoneal drainage fluid bilirubin value,postoperative hospitalization time were significantly longer than group A,the difference was statistically significant (P ＜ 0.05).No recurrence of choledocholithiasis and biliary stricture were found in either groups.Conclusions Placement of bile duct decompression drainage tube in laparoscopic choledocholithotomy and CBD primary suture after laparoscopic choledochotomy can significantly reduce the incidence of biliary leakage and shorten the postoperative hospital stay.

Objective To evaluate FIB-NLR,a combined neutrophil-lymphocyte ratio (NLR) and fibrinogen concentration (FIB) in predicting the prognosis of gastrointestinal stromal tumors (GIST).Methods Data of 79 GIST patients who underwent surgery from Jun 2010 to Dec 2014 were retrospectively analyzed.Patients were divided into 3 groups:NLR ＜ 2.30 and FIB ＜ 3.85 g/L were defined as group 0,NLR≥2.30 and FIB ＜3.85 g/L or NLR ＜2.30 and FIB≥3.85 g/L as group 1,NLR≥2.30 and FIB≥3.85 g/L as group 2.The clinicopathological features of the three groups and the 5-year recurrence-free survival rate after surgery were compared.Results FIB concentration and NLR were significantly correlated with NIH risk grade and tumor size in GIST patients (x2 =9.517,12.41 1,6.081,20.067,all P ＜ 0.05).FIB-NLR was closely related to tumor size,tumor risk and tumor mitosis (x2 =14.406,12.514,28.225,all P ＜ 0.05).Survival analysis showed that high FIB predicts lower 5-year recurrence-free survival rate,it was 87.4％ for group 0,60.8％ for group 1,21.1％ for group2,x2 =29.617,P＜0.000).Conclusion FIB-NLR independently predicts the prognosis of gastrointestinal stromal tumors.

Objective:To explore the protective effect and mechanism of improved St. Thomas solution on canine skeletal muscle ischemia-reperfusion injury (IRI).Methods:Between March 2021 and September 2021, in the experimental operating room at the Air Force Hospital of the PLA Eastern Theater Command, 16 Beagles were randomly divided into control group, IRI group, IRI+NS group, and improved St. Thomas group, 4 in each group. The canine skeletal muscle IRI model was established, and the canine vital signs were monitored by pre-perfusion with improved St. Thomas perfusate [potassium chloride (KCl), magnesium sulfate (MgSO 4), and NaHCO 3 (pH adjusted)]. The pathological damage of canine skeletal muscle was explored by hematoxylin eosin (HE) staining, electron microscope detection and tissue wet/dry weight ratio, and blood vessel density. Hypoxia performances were detected by labeling blood vessels and hypoxia-inducible factor-1α (HIF-1α). The IRI model of L6 rat myoblasts was established, and the components of St. Thomas perfusion solution were pre incubated to explore the effect on the inhibition of cell proliferation. And by detecting reduced nicotinamide adenine dinucleotide phosphate (NADPH), F2 isoprostane (F2-isoprostane), interleukin 1β(IL-1β), tumour necrosis factor alpha (TNF-α), myeloperoxide enzyme (MPO), glutathione peroxidase (GSH-Px), etc. to explore its protective mechanism. Statistical software SPSS 23.0 was used for statistical analysis, A P<0.05 was set as statistically significant. Results:In the improved St. Thomas group, the vital signs of the dogs were relatively stable, the amount of maintained dopamine was less, the histopathological structure of the gastrocnemius muscle tended to be intact, the swelling of tissue cells and mitochondria was significantly relieved, and the tissue wet/dry weight ratio was less than that in the IRI group ( P=0.046). Pre-incubated with therapeutic doses of MgSO 4 or NaHCO 3, the proliferation rate of L6 cells was higher than that of IRI group ( P<0.01, P=0.005), NADPH ( P=0.004, P=0.001), F2-isoprostane ( P<0.01, P=0.01), IL-1β ( P=0.02, P=0.015), TNF-α ( P<0.01, P<0.01), MPO ( P<0.01, P<0.01) were all lower than those in the IRI group, except GSH-Px that was higher than what in the IRI group ( P<0.01). Conclusion:Pre-perfusion of the improved St. Thomas solution can stabilise the vital signs of dogs in a short period of time. The solution can improve the state of skeletal muscle cells, improve tissue hypoxia, and reduce the damage of skeletal muscle tissue cells through anti-inflammatory and anti-oxidative stress.

To investigate the effects of cigarette smoking in different manners on acute lung injury in rats.The commercially available cigarettes with tar of 1,5, 11 mg were smoked in Canada depth smoking (health canada method, HCM) manner, and those with tar of 11 mg were also smoked in international standard (ISO) smoking manner. Rats were fixed and exposed to mainstream in a manner of nose-mouth exposure. After 28 days, the bronchoalveolar lavage fluids from left lung were collected for counting and classification of inflammatory cells and determination of pro-inflammatory cytokines IL-1β and TNF-α. The right lungs were subjected to histological examination and determination of myeloperoxidase (MPO) and superoxide dismutase (SOD) activities and glutathione, reactive oxygen species (ROS) and malondialdehyde (MDA) levels.In both HCM and ISO manners, the degree of lung injury was closely related to the tar content of cigarettes, and significant decrease in the body weight of rats was observed after smoking for one week. In a HCM manner, smoking with cigarette of 11 mg tar resulted in robust infiltration of macrophages, lymphocytes and neutrophils into lungs, significant increase in IL-1β and TNF-α levels and MPO activities, and significant decrease in GSH levels and SOD activities and increase in ROS and MDA levels (all<0.05). Smoking with cigarette of 5 mg tar led to moderate increase in IL-1β and TNF-α levels, and MPO activities (all<0.05), and moderate decrease in GSH levels and SOD activities and increase of ROS and MDA levels (all<0.05). However, smoking with cigarette of 1 mg tar affected neither inflammatory cell infiltration nor IL-1β and TNF-α levels.Cigarette smoking in nose-mouth exposure manner can induce acute lung injury in rats; and the degree of lung injury is closely related to the content of tar and other hazards in cigarettes.
Acute Lung Injury ; etiology ; pathology ; physiopathology ; Animals ; Bronchoalveolar Lavage Fluid ; chemistry ; cytology ; Chemotaxis, Leukocyte ; drug effects ; Glutathione ; analysis ; drug effects ; Interleukin-1beta ; analysis ; drug effects ; Lung ; chemistry ; pathology ; Lymphocytes ; drug effects ; pathology ; Macrophages ; drug effects ; pathology ; Male ; Malondialdehyde ; analysis ; Neutrophil Infiltration ; drug effects ; Neutrophils ; drug effects ; pathology ; Peroxidase ; analysis ; drug effects ; Rats ; Reactive Oxygen Species ; analysis ; Smoking ; adverse effects ; Superoxide Dismutase ; analysis ; drug effects ; Tobacco Products ; adverse effects ; classification ; Tumor Necrosis Factor-alpha ; analysis ; drug effects ; Weight Loss ; drug effects

In addition to the typical respiratory symptoms, COVID-19 patients present with clinical manifestations of cardiovascular system damage, and they are at higher risk of intensive care or mortality. The mechanism of COVID-19's impact on the cardiovascular system is still unclear, therefore we need to pay close attention to it. Based on the existing research, this paper focused on the concurrent characteristics of the cardiovascular system diseases, summarized the possible mechanisms of cardiovascular system damage, including the coronavirus invaders directly into cardiomyocytes and its conduction system, with complications or accompanying conditions such as cytokine storm, imbalance of oxygen supply and demand, drug influence, stress and other damage to cardiovascular system. Meanwhile, current clinical manifestations and treatment methods of COVID-19 were summarized.