Objective To discuss the application of image sensor in wireless endoscopic micro-electro-mechanical-system (MEMS). Methods Through the comparison of various types of image sensors, and in the consideration of the environment and requirement inside the body, CMOS image sensor which can output analog image signal with high density of integration, low power consumption, small profile was chosen as the sensor component of a wireless endoscope. The profile and power consumption of some specific models of this type of image sensor were compared and analyzed.Results The problems, such as ground connection, crystal configuration and the layout of circuit board, were reasonably solved during the design of image sensor's schematic circuit diagram. The image capture module based on OV7930 sensor was designed and manufactured. Images were successfully captured during the animal experiments.Conclusion The application and design of image sensor in a wireless endoscopic MEMS are feasible.

Objective To assess the effect of Ambroxol combined with Naloxone on respiratory insufficiency on premature infants. Methods A total of 168 premature infants treated from 2006 to 2009 in our hospital were divided into two groups randomly. Additionally to the conventional treatment, Ambroxol (5 mg pertime) combined with Naloxone (0.1mg pertime) intravenously injected 2 to 3 times one day for 3 to 5 days in the treatment group(86 cases). The control group (82 cases) was treated by routine Aminophylline injection,3- 5 mg/kg pertime, 2 to 3 times one day. Respiratory rates, regulately or not,breathholding, cyanosis and apnea,mechanically ventilated time,time of oxygen inhaling, time of hospital stay and the overall response rate were measured. Results The overall response rate was 80% (69/86) in the treatment group and 56% (46/82)in the control group, with significant difference between the two groups ( P ＜ 0. 05 ). Mechanically ventilated time,time of oxygen inhaling and hospital stay in the treatment group was (110.5±45.1) hrs, (169.3±58.6) hrs and ( 12±3) days, which were all significantly lower than that in the control group ( 181.1±81.2) hrs, (236.6±87.8)hrs and (16±5)days,respectively(P＜0.01 or 0.05). Conclusion Ambroxol and Naloxobe additional to conventional treatment could improve the respiratory function in premature infants with respiratory insufficiency safely with less side effects. Moreover,breathing machine could be removed to some extent,which made it more applicable in primary hospitals.

Objective To comparing the safety and effectiveness of patient-controlled sedation and analgesia with topical anesthesia during strabismus surgery. Methods Sixty-eight patients were selected and randomly divided into two groups (n=34): patient-controlled sedation and analgesia (P group) and control group(C group). SBP, HR, Ramsay's score, cooperation score, satisfactory score, visual pain score(VAS) and side-effects such as agitation and low SpO2 during the surgery were measured. Results There were no significant changes of SBP, HR in P group from 10 minutes after the starting of operation to the end,while SBP, HR in C group were higher in all the procedure than those of the base value. Ramsay's score, cooperation score, satisfactory score of the patients in P group were higher than those in C group. VAS score, agitation and groan incidence were higher in C group than those of in P group. Conclusions Patient-controlled sedation analgesia with a combination of sufentanil and propofol is a safe and effective method for strabismus surgery.

Objective To investigate the prevalence of vitamin D deficiency in medical intensive care unit (ICU) and its relationship with severity of disease and prognosis.Methods A prospective study was performed to evaluate vitamin D status in 216 patients admitted to the medical intensive care unit.The incidence of hypovitaminosis D was observed.Acute Physiology and Chronic Health Evaluation Ⅱ (APACHE Ⅱ) score,days kept in ICU and on ventilator,main laboratory findings,and mortality rate were compared among patients with different serum 25-hydroxyvitamin D [25 (OH) D] levels.Potential risk factors for mortality were analyzed by multivariate logistic regression analysis.Results One hundred and fifty-three patients (70.8％) developed hypovitaminosis D.25 (OH) D deficiency was identified in 95 (44.0％),25 (OH) D insufficiency in 58 (26.8％),and 25 (OH) D sufficiency in 63 (29.2％) patients.APACHE Ⅱ score,positive blood culture,the incidence of multiple organ dysfunction syndrome(MODS),and mortality rate were higher in deficiency group compared with the other two groups [APACHE Ⅱ score:deficiency group 25 (20,28) score,insufficiency group 22 (17,26) score,sufficiency group 19 (18,20) score,P＜0.01 ; positive blood culture:deficiency group 18.9％,insufficiency group 13.8％,sufficiency group 3.2％,P=0.015 ; MODS:deficiency group 48.4％,insufficiency group 43.1％,sufficiency group 25.4％,P=0.025; mortality rate:deficiency group 40％,insufficiency group 24.1％,sufficiency group 15.9％,P =0.003].25 (OH)D levels were negatively correlated with APACHE Ⅱ score and mortality rate (r =-0.325,P＜0.01 ; r=-0.276,P＜0.01,respectively).Analysis by multiple logistic regression demonstrated that 25 (OH) D deficiency (OR =3.005,95 ％ CI 1.321-5.875,P =0.008) was independent risk factor for mortality.Conclusions This study demonstrates that vitamin D deficiency is highly prevalent among patients admitted into ICU.Vitamin D deficiency is associated with disease severity,and seems to be an independent risk factor for mortality.

Objecfive To study the effects of some cytokines such as TNF-α,IL-6 and IFN-γ as well as lipopolysaccharide on CD68 expression in HaCaT cells.Methods Human HaCaT keratinocytes were randomly divided into natural proliferation group (without stimulation),IFN-γ-stimulated group,TNF-α-stimulated group,LPS-stimulated group and IL-6 stimulated group.The work concentration of TNF-α,IL-6,IFN-γ and LPS was 50 mg/L.HaCaT cells were collected after 24-hour treatment with the cytokines followed by the examination of CD68 expression with flow cytometry,immunohistochemistry and reverse transcription(RT)-PCR,respectively.Results Compared with untreated HaCaT cells,the count of CD68-positive cells was elevated in cells stimulated by TNF-α(t=3.60,P<0.01),IL-6(t=3.93,P<0.01),IFN-γ(t=2.38,P<0.05)and LPS(t=2.52,P<0.05),and the effect of TNF-α and IL-6 was stronger than that of IFN-γ and LPS.Among the four cytokines,only IL-6 enhanced the mean fluorescence intensity of CD68-positive cells (t=8.34,P<0.01).After 24-hour treatment with TNF-α,IFN-γ and IL-6,CD68 expression was observed in the cytoplasm and on the membrane of HaCaT cells and was stronger in cells treated with TNF-α and IL-6 than in those with the other cytokines.A significant increase was observed in the CD68 mRNA expression after 24-hour treatment with TNF-α (t=4.34,P<0.01),IL-6 (t=7.52,P<0.01)and IFN-γ (t=2.81,P<0.05);TNF-α and IL-6showed a stronger promotive effect than IFN-γ.Conclusion IL-6,TNF-α,IFN-γ and LPS can upregulate the CD68 expression in HaCaT cells.

Objective To observe the effectiveness and economic evaluation of appropriate technique for hypertension in community.Methods Systematic management,behavioral intervention and drug intervention were promoted for a period of 2 years in the community and the related index changes were observed after 2 years.Results After promoting appropriate technique,the hypertension knowledge,skill level in medical staff were improved (P ＜ 0.01).The treatment rate,control rate of hypertension were higher than 2 years ago (P ＜ 0.01).The average monthly cost of hypertensive patients was reduced(P ＜ 0.05).Conclusion It is effective to promote appropriate technique of hypertension in community.

Objective:To observe the distribution,morphology and density of monocytes/macrophages and dendritic cells in the normal human dermis.Methods:Normal skin from 6 locations such as the face,trunk,proximal limbs,distal limbs,and palms and soles of 8 subjects were collected for the study.The horizontal and longitudinal sections of the skin were stained with an ABC immunoperoxidase procedure with anti-CD1a and anti-CD68 monoclonal antibodies.Results:In the superficial dermis CD68 positive monocytes/macrophages form a dense network with a density in a 6-micron section ranging from 361/mm~2 to 562/mm~2.These network of CD68 positive cells continued on to surround the blood vessels and skin appendages.Lower densities of CD68 positive dendritic cells were found in the deep(reticular) dermis,dispersed between collagen bundles.The CD68 positive cells were detected within the superficial dermis with variable densities: distal limbs 562/mm~2,trunk 517/mm~2,face 509/mm~2,palms 507/mm~2,proximal limbs,472/mm~2,and soles 361/mm~2.Conclusion:There exists in the superficial dermis a relatively dense network of CD68 positive monocytes/macrophages.Such a distribution might indicate the clear polarity of the dermal monocytes/macrophages,with their direction of defense towards to the dermal-epidermal junction.

Objective To investigate the association of imbalance of Tc1 and Tc2 cells with chronic actinic dermatitis (CAD). Methods Immunohistochemistry (S-P method) was used to test the subgroups of infiltrating cells and the expression of receptors of interleukin-4 (IL-4), interleukin-10 (IL-10), interleukin-12 (IL-12) and interferon-? (IFN-?) in these cells of the eruptions from 28 patients with CAD and 7 normal controls. The serum levels of IL-4, IL-10, IL-12 and IFN-? from 33 patients with CAD and 32 normal controls were tested by ELISA. Results The major infiltrating cells in the eruptions of patients with CAD were T cells, which were significantly more than B cells (P

Objective To prepare two types of biodegradable modified materials (chitosan and collagen)and evaluate whether the new materials are suitable for tissue engineering cartilage.Methods Collagen and chitosan were both modified by poly-γ-benzyl-L-glutamate-co-glutamine acid (PBLG-co-PGA) with different proportions.The contact angle,degradation rate,tensile strength,cell attachment and cytocompatibility were tested and compared.Results As the PBLG-co-PGA content varied,the degradation rates of PBLG-co-PGA composites became adjustable,the hydrophilicity of PBLG-co-PGA/chitosan was improved,and the tensile strength increased in PBLG-co-PGA/collagen composite.The composites with 30％ PBLG-co-PGA were chosen for cytocompatibility and cell attachment experiments.The rabbit condrocytes grew significantly better on PBLG-co-PGA/chitosan than on other three materials(P＜0.05).Conclusion PBLG can improve the hydrophilicity,tensile strength and regulate the degradation rate of composite materials,and the cytocompatibility of the composites with 30％ of PBLG is good,among which PBLG-co-PGA/chitosan can even promote cell proliferation.It could be a new choice of scaffold for tissue engineering cartilage.

Objective To study the clinical and pathologic changes in gigantomast.Methods Tissue sections were prepared from 180 cases of breast hypertrophy and 45 cases of normal breast tissues.The morphological changes and the expression and localization of ERRγwere evaluated on the HE and immunohistochemistry stained sections between hypertrophy and normal breast tissues.Results Compared with normal breast,hypertrophic breast showed expended ducts and obvious hyperplasia of the duct epithelial papillary.Hypertrophic breast tissues demonstrated strong expression of ERR-γ in ducts and lobules.Conclusions Upregulated expression of ERRγ is identified in hypertrophic breast tissues that may associate with the development of gigantomastia.