The experiment aimed to study the toxic effect of oral ricin on gastrointestinal tract and immune organs of mice with the dose of 1/5 LD50.In early days of intoxication,there was an obviously decrease in daffy weight and relative weight of thymus and spleen,fllowing the excretion of toxin,they had a trend of recovering to the normal state.Also,results of pathological section,scanning electron microscope and transmission electron microscope showed that ricin would induce a series of pathological reaction in intestines,meanwhile,the splenocytes displayed significant symptom of apoptosis and necrosis.

Objective To explore the significance of detecting miR-145 hypermethylation in non-small cell lung cancer (NSCLC). Methods Seventy-five NSCLC tissues and adjacent tissues was collected from May 2012 to January 2015. The methylation status of miR-145 promoter was tested by bisulfite sequencing PCR (BSP) and the expression of miR-145 evaluated by ISH. The correlation between miR-145 methylation and clinical parameters , and the relationship between miR-145 methylation and expression were statistically analyzed. Results The hypermethy-lation ratio of miR-145 in NSCLC tissues was higher than that in the adjacent tissues. Hypermethylation of miR-145 was correlated with NSCLC differentiation stage, but not with gender and age. In NSCLC, miR-145 hypermethyla-tion was negatively related with its expression. Conclusion MiR-145 hypermethylation is closely related with dif-ferentiation stage in NSCLC tissues. MiR-145 hypermethylation may be a potential biomarker for estimating NSCLC differentiation stage.

Objective To study whether methicillin-resistant Staphylococcus aureus (MRSA)will increase the burden of patients with hospital-acquired pneumonia (HAP).Methods Patients with Staphylococcus aureus HAP in a hospital between January 1 ,2013 and November 31 ,2014 were selected,patients with MRSA HAP were as case group,patients with methicillin-sensitive Staphylococcus aureus (MSSA)HAP were as control group,propen-sity score matching (PSM)analysis were conducted to compare the prognosis of MRSA HAP and MSSA HAP (length of hospital stay, duration from infection to discharge, mortality, total therapeutic cost ). Results APACHE II score in case group was higher than control group before PSM was conducted,length of hos-pital stay and duration from infection to discharge were both longer than control group (40[20,94]d vs 28[21 ,53] d;19[10,46]d vs 17[8,29]d,respectively,both P <0.05).APACHE II score in case group and control group af-ter conducting PSM was not significantly different(P >0.05 ),data were balanced and comparable;there were no significant difference in length of hospital stay between two groups (28[21 ,52]d vs 28[21 ,53]d),duration from in-fection to discharge (15[9,25]d vs17[8,29]d),mortality(10.87% vs 15.22%),and total therapeutic cost (121 013.5[80 747.21 ,176 200]yuan vs 119 911 .2[66 994.08,241 184.7]yuan)(all P >0.05).Conclusion APACHE II score is an important factor affecting prognosis;after balancing this factor,there is no difference in the prognosis of patients with MRSA and MSSA HAP,MRSA HAP can not increase the burden of disease.

Objective To analyze the present medical teaching textbooks and practice skill guidelines,and explore the profound causes of poor hand hygiene idea among doctors.Methods Three sets of unified textbook series used for domestic medical colleges and universities and two sets of manipulation skill guidelines were studies.Statistical method was conducted to analyze whether concepts and methods of hand hygiene,hand-washing and antiseptic han-drubbing were included in these teaching textbooks;as to eight aseptic manipulation skills,coverage of knowledge, steps of hand-washing and antiseptic handrubbing in manipulation skill guidelines were also analyzed.Results The mentioning rate of hand hygiene,hand-washing and antiseptic handrubbing in 8-year and 5-year program teaching textbooks were both 0 ,in nursing teaching textbooks was 1 00 % ;as to 8 aseptic manipulation in 2 sets of skill practice guidelines,mentioning rate of hand washing was 37 .50 % ,and method and steps of antiseptic handrubbing were both 0 .Conclusion School teaching and skill assessment are the basis,it is difficult to form the right idea by only relying on continuing education without basic education.Hand hygiene should be stressed in the written of teaching textbooks,guidelines should be written following the newest progress,so as to form the correct idea of hand hygiene among doctors.

Objective To investigate the expression and effect of miR-22-3p in non-small cell lung cancer (NSCLC). Methods The miR-22-3p expression level in seventy-six NSCLC tissues and para-cancer tissues was detected by qRT-PCR. The relationship between the expression of miR-22-3p and gender,age,tumor size,histolo-gy grade,pathological type and lymph node metastasis was analyzed. The function of miR-22-3p on the prolifera-tion of NSCLC cells was tested by growth curve assay. Target genes of miR-22-3p were predicted by online software Targetscan. Luciferase reporter assay and qRT-PCR was used to certificate the prediction. Results The expression of miR-22-3p was increased in NSCLC tissues than the para-cancer tissues and was correlated to lymph node metas-tasis. Overexpression of miR-22-3p could suppress the proliferation of A549 cells. Astrocyte-Elevated Gene-1(AEG-1) was predicted to be a target of miR-22-3p. MiR-22-3p was revealed to bind to AEG-13′UTR by luciferase report-er assay. Overexpression of miR-22-3p could inhibit the expression of AEG-1 in A549 cells. Suppression of miR-22-3p could increase AEG-1 expression. Conclusion MiR-22-3p could inhibit the proliferation of NSCLC by tar-geting AEG-1.

Objective To investigate the relationships among free triiodothyronine( FT3 ), free thyroxine (FT4 ), and thyroid-stimulating hormone( TSH) in both plasma and breast milk of patients with thyroid diseases. Methods A total of 102 female subjects with hyperthyroidism(GD), normal thyroid function(NC), and Hashimoto′s hypothyroidism(HT or hypothyroidism)were enrolled. Their plasma and breast milk were collected for measurement of FT3 and FT4 , and TSH. Meanwhile, 11 infants of patients with hyperthyroidism and another 11 infants of patients with hypothyroidism were selected, blood FT3 , FT4 , and TSH content were determined during lactating period and 2 months after lactation. Results (1) FT3 and FT4 contents in breast milk among 3 groups were different[(1. 48 ± 0. 81), (7. 79 ± 3. 56), and (0. 77 ± 0. 42)pg/ ml; (2. 94 ± 1. 43), (14. 78 ± 7. 40), and (1. 51 ± 0. 40)pg/ ml, P<0. 05], TSH in breast milk was similar between hyperthyroidism and normal groups(P>0. 05). (2) FT3 ratio of breast milk to plasma of the hyperthyroidism group was different to other 2 groups(0. 42 ± 0. 04 vs 0. 35 ± 0. 03, 0. 36 ± 0. 03, P<0. 05), but no difference existed in FT4 and TSH among 3 groups(both P>0. 05). (3)Blood FT3 , FT4 , and TSH contents from infants of patients with hyperthyroidism and hypothyroidism were different, both during lactating period and 2 months after lactation[(5. 06 ± 1. 76)vs (6. 51 ± 2. 23)pg/ ml, (17. 39 ± 2. 78)vs (19. 87 ± 3. 26)pg/ ml, (1. 34 ± 1. 33)vs (0. 74 ± 0. 78)mIU/ L; (1. 43 ± 0. 74)vs (1. 83 ± 0. 91)pg/ ml, (4. 28 ± 1. 55)vs (5. 00 ± 1. 75)pg/ ml, (6. 48 ± 2. 70) vs (5. 49 ± 2. 39) mIU/ L; all P<0. 05]. (4) FT3 and FT4 contents were positively correlated in plasma and breast milk(all P<0. 05), while TSH contents were positively correlated only in hypothyroidism group(P<0. 05). Conclusion FT3 , FT4 , and TSH in blood and breast milk are correlated.

Objective To realize the effect of WHO multimodal hand hygiene improvement strategy (MHHIS)on improving hand hygiene compliance of health care workers(HCWs).Methods From June to December 2012,HCWs in a hospital was intervened by adopting MHHIS,hand hygiene compliance rate before and after intervention was com-pared,and effectiveness of intervention was assessed.Results Hand hygiene compliance of doctors and nurses improved from 14.06%(35/249)and 28.62%(81/283)before intervention to 31.73%(79/249)and 57.60%(163/283)after inter-vention respectively(both P <0.05).Except outpatient and emergency department,hand hygiene compliance of the other departments significantly improved (all P <0.05);hand hygiene compliance of various hand hygiene indicators significantly improved except ‘after contact with patient surrounding’(all P <0.05),the differences were statistically different (P<0.05).Conclusion Using WHO MHHIS can effectively improve hand hygiene compliance of HCWs.

Statins are collectively referred to as hydroxymethylglutaryl-CoA (HMG-CoA) reductase inhibitors.They exert powerful cholesterol-lowering effects by inhibiting key steps in the sterol biosynthetic pathway.At present,nearly 200 million people worldwide use statins.As clinical research progresses,the pleiotropic effects of statins are gradually discovered,especially those in the prevention and treatment of diseases of the circulatory system,nervous system and digestive system with high incidences in the elderly.We should to be alert to the adverse effects of statins and pay attention to the pleiotropic effects of statins in the elderly at the same time.

Objective:To investigate the strategy of balanoplasty in penile reconstruction with free forearm flap.Methods:From October 2010 to October 2015, 20 patients (19-41 years old) underwent penile reconstruction with free forearm skin flap in Xijing Hospital of Air Force Military Medical University, including 14 cases of transexuals (female to male), 3 cases of hermaphroditism, 2 cases of congenital penile dysplasia and 1 case of penile defect after trauma. According to the tissue quantity of forearm flap and the development of glans, three methods were adopted to reconstruct the glans: free forearm skin flap + E-shaped cartilage framework, free dorsalis pedis flap + E-shaped cartilage framework or free glans transplantation. The patients were followed up for a long time postoperation to observe the morphological changes of the glans after different method of balanoplasty.Results:Among the 20 patients, 18 cases were treated with distal part of free forearm flap and E-shaped cartilage framework for glans reconstruction, 1 case of transexuals used free dorsalis pedis flap and E-shaped cartilage framework for glans reconstruction, and 1 case of hermaphroditism used free glans transplantation to reconstruct glans. After 10-36 months of follow-up, all reconstructed penises survived. The shape of glans reconstructed by dorsalis pedis flap was the most plump and natural with clear coronal sulcus; the amount of glans tissue reconstructed by forearm skin flap was slightly insufficient, and the coronal sulcus was slightly flat, while the overall shape was satisfactory. The reconstructive glans with free glans transplantation was not plump, but they retained the shape of glans, which was lifelike.Conclusions:If the tissue quantity of forearm skin flap is sufficient, the distal part of free forearm flap and E-shaped cartilage framework is used; if the tissue quantity of forearm is seriously insufficient, the free dorsalis pedis flap and E-shaped cartilage framework is used. For hermaphroditism patients with well-developed glans, autologous glans free transplantation is used.Individualized strategy of balanoplasty according to different conditions of patients is conducive to obtaining satisfactory appearance of the glans.

Objective:To investigate the strategy of balanoplasty in penile reconstruction with free forearm flap.Methods:From October 2010 to October 2015, 20 patients (19-41 years old) underwent penile reconstruction with free forearm skin flap in Xijing Hospital of Air Force Military Medical University, including 14 cases of transexuals (female to male), 3 cases of hermaphroditism, 2 cases of congenital penile dysplasia and 1 case of penile defect after trauma. According to the tissue quantity of forearm flap and the development of glans, three methods were adopted to reconstruct the glans: free forearm skin flap + E-shaped cartilage framework, free dorsalis pedis flap + E-shaped cartilage framework or free glans transplantation. The patients were followed up for a long time postoperation to observe the morphological changes of the glans after different method of balanoplasty.Results:Among the 20 patients, 18 cases were treated with distal part of free forearm flap and E-shaped cartilage framework for glans reconstruction, 1 case of transexuals used free dorsalis pedis flap and E-shaped cartilage framework for glans reconstruction, and 1 case of hermaphroditism used free glans transplantation to reconstruct glans. After 10-36 months of follow-up, all reconstructed penises survived. The shape of glans reconstructed by dorsalis pedis flap was the most plump and natural with clear coronal sulcus; the amount of glans tissue reconstructed by forearm skin flap was slightly insufficient, and the coronal sulcus was slightly flat, while the overall shape was satisfactory. The reconstructive glans with free glans transplantation was not plump, but they retained the shape of glans, which was lifelike.Conclusions:If the tissue quantity of forearm skin flap is sufficient, the distal part of free forearm flap and E-shaped cartilage framework is used; if the tissue quantity of forearm is seriously insufficient, the free dorsalis pedis flap and E-shaped cartilage framework is used. For hermaphroditism patients with well-developed glans, autologous glans free transplantation is used.Individualized strategy of balanoplasty according to different conditions of patients is conducive to obtaining satisfactory appearance of the glans.