With the extensive clinical application of broad-spectrum antibiotics,methicillin-resistant staphylococcus aureus(MRSA) has become an important pathogen in the nosocomial infections,chronic sinusitis caused by which should be attached importance to.Therefore,in order to formulate accurate and quick detection methods and available therapeutic regimen,it is necessary to investigate MRSA including its biotic characteristics,mechanism of antibiotic-resistance and possible reasons leading to chronic sinusitis.This paper outlines progresses about these researches in recent years.

To explore the effects of dietary conjugated linoleic acid(CLA) on body fat accumulation in male Wistar rats. The obese rat model was established by feeding high lipid forage. The rats were fed a semi-purified diet containing 0.5,1.0,3.0g?kg -1 CLA for 36 days. Low dose group, middle dose group and high dose group all could remarkably reduce the gain of body weight. Low dose group could reduce the body adipose, middle and high dose group could remarkably decrease the body adipose. There were significant differences in the fat and protein contents in the rats thigh between the control group and the group fed high dose CLA. These results suggested that CLA can reduce the body fat in obese Wistar rats.

OBJECTIVE To observe the ultra-structure and mucociliary transport speed of maxillary sinus mucosa of experimental rhinogenic acute sinusitis in rabbits.METHODS Fifteen healthy adult male New Zealand white rabbits were divided into experimental group(10 rabbits) and blank control group(5 rabbits) randomly.For the experimental group,a piece of polyvinyl acetal absorbent sponge(Merocel?) in size of 3 mm?5 mm?25 mm was inserted into the right-side nasal cavity of each rabbit.The sponges were soaked with 1ml type Ⅲ streptococcus pneumoniae solution.Two weeks after insertion,the mucociliary transport speed was measured by India ink solution method.All rabbits were sacrificed to obtain the right-side maxillary sinus mucosa for ultrastructure observation through transmission electron microscope.RESULTS The mucociliary transport speed of experimental group was much lower than that of blank control group,and the difference was statistically significant(P

ObjectiveTo explore the relationship of body fat distribution with serum lipid and its potentially predictive value for dyslipidemia.MethodsA total of 784 Beijing rural residents were enrolled in this study using a cluster sampling method.The body height,weight,waist circumference (WC),hip circumference,body composition,high-density lipoprotein cholesterol ( HDL-C ),low-density lipoprotein cholesterol ( LDL-C),total cholesterol ( TC),and triglycerides (TG) were measured.The body mass index (BMI) and waist to hip ratio (WHR) were calculated.ResultsThe age-adjusted partial correlation analysis showed that WC had the best correlation with HDL-C ( r =- 0.310) and LDL-C ( r =0.204 ),while WHR with TC ( r =0.151 ) and TG ( r =0.271 ).Subgroup analysis with different BMI,WC,WHR,and trunk fat mass (TFM) showed that WC,WHR,and TFM sensitively reflected the changes of body lipids,whereas BMI,WC,WHR,and TFM sensitively reflected the low HDL,high TG,and risk of dyslipidemia.Receiver operating characteristic curve analysis showed that the predictive curves of WC,WHR,BMI,and TFM were above the reference line,and the areas under the receiver operating characteristic curves of WHR (0.684,0.630),WC (0.667,0.616),and TFM (0.661,0.604) showed high tendencies than BMI (0.629,0.597) for both male and female subjects,although no statistically significant differences were found ( all P ＞ 0.05 ).ConclusionsCompared with BMI,the body fat distribution indicators including WHR,WC,and TFM have higher predictive values in evaluating the risk of dyslipidemia.When the maximum Youden index for predicting the risk of dyslipidemia is applied,the ideal cutoff points was 24 kg/m2 for BMI,0.91 for WHR,85cm for WC,7.5kg for TFM in males,and 25 kg/m2,0.91,87cm,and 9.5 kg,respectively,in females.

Objective To analyze and discuss the different characteristics of clinical imaging of Brucellar and tuberculous spondylitis,and to improve the diagnostic performance of the image of Brucellar spondylitis.Methods A retrospective analysis at Traditional Chinese Medicine Hospital Affiliated to Xinjiang Medical University was conducted from January 2011 to December 2013.X-ray,computer tomography (CT)and magnetic resonance imaging (MRI)data of 46 cases of Brucellar spondylitis and 40 cases of tuberculous spondylitis were compared.Results The lumbar spine,especially L4,was usually involved in brucellosis,characterized with multiple small lesions mostly confined to the edge of vertebral body and surrounded by the hyperplasia and sclerosis.New damaged foci were formed in the new bone tissue and intervertebral discs destruction was slight with hyperplasia and sclerosis of articular surface. Few or no paravertebral abscesses were seen.In contrast,thoracic and lumbar spines were more usually affected in tuberculosis featured with destruction of vertebra and intervertebral discs.There could be dead bone formation.Paravertebral abscesses and osteoporosis were frequent.Conclusion The different imaging characteristics of Brucellar and tuberculous spondylitis could favor the differential diagnosis.

OBJECTIVE: The aim of this study was to determine the expression of GATA-3 and the level of Th1 and Th2 cytokines upon repeated exposure to staphylococcal enterotoxin B(SEB) of different concentrations in the maxillary sinus mucosa of rabbits. METHOD: The rabbits were randomly divided into 2 groups (24 rabbits per group): low-dose SEB group and high-dose SEB group. The low-dose SEB group and high-dose SEB group received daily injections of 0.6 ng of SEB (2 ml) and 60 ng of SEB (2 ml) into the left maxillary sinus of rabbits for 28 days, respectively. Concurrent treatment of the right maxillary sinus with normal saline was used as a control. Six rabbits chosen randomly in two groups were killed on days 3, 7, 14, and 28, and to obtain the sinus mucosa from the two-side maxillary sinuses for measurement. Mucosal levels of IL-2, IL-4, IL-5, and IFN-γ were measured using ABC-ELISA. Tissue expression of GATA-3 were examined using Real-time PCR and immunohistochemistry. RESULT: IFN-γ and IL-2 levels were significantly elevated in the high-dose SEB group compared with the low-dose SEB and control groups on days 7, 14, and 28 (P < 0.05). However, IL-4 and IL-5 levels were markedly enhanced in the low-dose SEB group compared with the high-dose SEB and control groups on days 14 and 28 (P < 0.05). Real-time PCR showed that the expression of GATA-3 mRNA in the low-dose SEB group was markedly enhanced, and immunohistochemical staining illustrated that the number of GATA-3 positive cells was markedly increased in the low-dose SEB group as compared with the high-dose SEB group (P < 0.05). No significant differences were observed in GATA-3 expression between the high-dose SEB and the control groups (P > 0.05). CONCLUSION SEB promoted Th1 cytokines production at high concentrations, and enhanced Th2 cytokines expression and Th2 immune response at low concentrations.
Animals ; Cytokines ; metabolism ; Enterotoxins ; administration & dosage ; pharmacology ; Enzyme-Linked Immunosorbent Assay ; Interferon-gamma ; metabolism ; Interleukin-2 ; metabolism ; Interleukin-4 ; metabolism ; Interleukin-5 ; metabolism ; Male ; Maxillary Sinus ; drug effects ; metabolism ; Nasal Mucosa ; metabolism ; RNA, Messenger ; metabolism ; Rabbits ; Th1 Cells ; Th2 Cells ; Transcription Factors ; metabolism

Objective To investigate the effects of simultaneous multi-level surgery for moderate to severe obstructive sleep apnea hypopnea syndrome (OSAHS). Methods A retrospective analysis was made on surgical cases of one hundred and thirty seven patients with moderate to severe OSAHS diagnosed by polysomnography (PSG). They were divided into multi-level group (n = 95) and UPPP group (n = 42). The two groups were compared in terms of postoperative complications as well as the related indicators of PSG , calgary sleep apnea quality of life index (SAQLI), epworth sleepiness scale (ESS), snore scales (SS) before operation and after operation. Results Just one patient in the multi-level group had difficulties in respiration and was rescued by timely tracheotomy. The AHI, LSaO2, TS90%, the total score and the scores on the four dimensions of SAQLI, ESS score, SS score in the multi-level group were significantly improved as compared both to the results after operation (P < 0.01) and to the UPPP group (P < 0.05). But only the AHI, LSaO2 and TS90% in the UPPP group were improved (P < 0.05). Conclusions The multi-level surgery is a safe and feasible therapy or moderate to severe OSAHS. The evaluation in subjective and objective ways can be more accurate in comprehensive reflecting the surgical efficacy and effects of OSAHS on patients′ of life quality.

Child ; Humans ; Male ; Moyamoya Disease ; etiology ; Takayasu Arteritis ; complications ; diagnosis

OBJECTIVE: To observe ultrastructure of maxillary sinus mucosa of experimental acute sinusitis in rabbits. METHOD: Twenty-five rabbits were randomly divided into experimental group (20 rabbits) and blank control group (5 rabbits). We established a rhinogenic model of experimental acute sinusitis in experimental group. Five rabbits chosen randomly in experimental group were sacrificed and dissected after 1, 2, 3, and 4 weeks, and the tissue (0.3 cm x 0.3 cm) of sinus mucosa were prepared for visualization by transmission electron microscope (TEM). Animals in blank control group were sacrificed after 1 week. RESULT: Under the transmission electron microscope, in the blank control group, cilia of maxillary sinus mucosa lined up in order without ciliary loss, no stretched endoplasmic reticulum or turgescent mitochondria was observed. However, in the experimental group, inordinate array and loss of cilia was observed, a few compound cilia and cytoplasmic protrusion were also found. Both endoplasmic reticulum and mitochondria were swelling, and the lymphocytes were infiltrating with fibroblast proliferation in the submucosa. There was statistically significant difference between the experimental group and the blank control group (P < 0.05). In the experimental group, the number of compound cilia increased from 1 to 4 weeks, and the amount of compound cilia of the mucosa at 3 and 4 weeks was significantly higher than that at 1 week (P < 0.05). Swelling of mitochondria and endoplasmic reticulum was severe at 2 weeks and abated gradually with time, the results at 2 weeks were different from those of experimental group at 4 weeks (P < 0.05). CONCLUSION The obstruction of nasal sinuses and the bacterial infection might lead to ultrastructural changes of maxillary sinus mucosa, and these ultrastructural changes were believed to the important processes of pathological changes in acute sinusitis.
Acute Disease ; Animals ; Cilia ; ultrastructure ; Maxillary Sinus ; ultrastructure ; Maxillary Sinusitis ; pathology ; Microscopy, Electron, Scanning Transmission ; Mucous Membrane ; ultrastructure ; Rabbits ; Sinusitis ; pathology

Objective To investigate the effect of rivaroxaban in the treatment of deep vein thrombosis (DVT) after total hip replacement (THR) in elderly patients with diabetes mellitus and its influence on plasma D-dimer level.Methods 25 elderly patients with diabetes undergoing elective hip replacement (group B) and 25 elderly patients without diabetes mellitus (group A) were enrolled in this study.The two groups were orally given rivaroxaban for 2 weeks after operation.The results of color Doppler diagnosis of DVT were compared between the two groups,and the content of D-dimer in plasma was detected.Results Before and after operation,the INR between the two groups had no statistically significant differences (P ＞ 0.05).The D-dimer levels of the two groups before operation were obviously.lower than those postoperative 2 and 7 days (t =3.145,P ＜ 0.05).Preoperative D-dimer value was slightly lower than those postoperative 14 days (P ＞ 0.05),the value of postoperative 2 days was significantly higher than those postoperative 7 and 14 days (t =3.763,P ＜ 0.05),the value of postoperative 7 days was significantly higher than those postoperative 14 days (t =2.876,P ＜0.05).There was no DVT in thetwo groups of A and B,and no severe bleeding occurred in the two groups.Conclusion Rivaroxaban in the treatment of elderly diabetic patients with THR surgery,can effectively reduce the formation of lower extremity DVT.At the same time,through detection of plasma D-dimer content can accurately judge the occurrence of DVT,which has guiding significance for prevention and treatment of DVT.