Melatonin has neuroprotective effect on hypoxic-ischemic brain damage(HIBD), which easily crosses the blood-brain barrier and plays neuroprotective role in reducing oxidative damage. Melatonin may be effective in preventing learing diabilities. It has been suggested that melatonin soporific effect is secondary to its ability to induce hypothermia. Neuroprotective effect of hypothmia has been proved. Howere, it is clear that hypothemia will not provide complete protection of HIBD and melatonin might augment protection of hypothemia in HIBD.

Objective To explore the influence of health education on the cognition and behavior of oc-cupational protection for nurses in operation room. Methods 85 nurses in operation rooms from 2 compre-hensive hospitals were selected with random clustering methods, baseline surveys and health education about the cognition and behavior of occupational protection were carded out in them. Results The awareness rate of occupational protection knowledge after health education was higher than that before it. The behavior of occupa-tional protection was better than that of before health education. Conclusions Health education can advance cognition and ability of occupational protection, then can prevent occupational risks effectively.

In recent years, ultrasonographic ultrasonographic ultrasonographic resolution level of gastrointestinal anatomy has been improved significantly due to perfection of ultrasonic instrument and development of ultrasound diagnostic technology. Currently, ultrasonographic ultrasonographic ultrasonography plays an effective role of evaluation of children's gastrointestinal obstruction diseases, especially congenital hypertrophic pyloric stenosis, gastroesophageal reflux, malrotation, midgut volvulus, superior mesenteric artery syndrome,duplication, intussusception, meconium peritonitis, meconium ileus, and congenital giant colon. The clinical manifestation and the ultrasonographic feature of all these diseases mentioned above are reviewed in this paper.

Objective To study the effect of evidence-based nursing care on medication compliance and rehabilitation effect of elderly patients with angina pectoris. Methods 89 cases of elderly people with angina pectoris were divided into the control group(43 cases )and the observation group(46 cases).The control group was treated with cardiology common nursing, the observation group received evidence-based nursing care of psychological nursing, life nursing and medication compliance. The medication compliance in each period of a year and rehabilitation effect after one year were analyzed and compared between the two groups. Results The medication compliance rate of the observation group was higher than the control group after 1, 2, 4weeks, 3, 6 months and 1 year, the total effective rate of rehabilitation was 91.3% in the observation group, also higher than the control group (62.8%)after 1 year. Conclusions Evidence-based nursing care can improve the medication compliance and the effect of rehabilitation of elderly patients with angina psctoris.

Objective To approach the clinical manifestations of childhood cough variant asthma, and summarize the dingnosis and treatment experience. Methods Retroepective analyzed the clinical data of 49 children with cough variant asthma. Results In 49 children patients,male 27 cases,female 22 cases;Age:1 ～3 years old( 11 cases) ,4 ～6 years old(25 cases) ,7 ～ 12 years old( 13 cases) ;Duration:1 ～24 months;Incidence season:wintry spring (31 cases) ,summer(7 cases) ,autumn(11 cases). Diagnoeis:CAV was 8 cases,and 24 cases were misdiagnoeed as bronchitis, 11 cases were misdiagnosed as upper respiratory tract infection,3 cases were misdiagnosed as chronic pharyngitis,2 cases were misdiagnosed as sinusitis,1 case was misdiagnosed as bronchial foreign body. In 49 children patients,32 cases were significantly effective, 15 cases effective and 2 cases noneffective. Conclusion The clinical manifestations of CAV was noepecific,and miscdiagnosis rate was high. Effect of treatment with expansion bronchical and anti-infection methods was good.

Precocious puberty in children begins with the increased pulsatile secretion of the gonadotrophin-releasing hormone(GnRH)from hypothalamic.Recently,KISS1-GPR54 Was found to be a key factor to regulate the secretion of GnRH and the onset of puberty.Kisspeptin interacts with its receptor GPR54.which expressed on the hypothalamic GnRH neurons.and affects GnRH pulsatile release and the onset of puberty.GPR54 gene mutation causes the incidence of GnRH-dependent precocious puberty.

Stenotrophomonas maltophilia(SMA) is a emerging opportunistic pathogen that can cause difficult-to-treat infections and exhibits significant degrees of poorly understood multidrug resistance,especially in irnmunocompromised patients.SMA is not an inherent virulent pathogen,but it can colonize in respiratorytract epithelial cells and surfaces of medical devices make it an important colonizer in hospitalized patients.Management of SMA infection is hampered because of its high-level intrinsic resistance to many antibiotics and the increasing occurrence of acquired resistance to the first-line drug such as co-trimoxazole.The prevention and treatment of SMA infection attract more and more attention in recent years.

Coagulase-negative staphylococci,especially staphylococcus epidermidis (SE) is on the surface of skin and mucous membrane of human,and because of its high frequency,especially in hospital,it is thought to be an important opportunistic pathogen.SE is the common cause of preterm infection,and it has relationship with immature brain.Epidemiology supports the relationship among preterm,infection and brain injury.SE could lead to brain injury through Toll-like receptor mediated inflammation.

The innate immune system is critical to protect against microorganisms,but it is immature.Preterm newborn have to stay longer in NICU.They are vulnerable to infections.The common pathogen is coagulase-negative staphylococci which is the most cause of mortality for preterm newborn.So it is the key to understand the interaction between innate immune system of preterm newborn and pathogen.

TF was prepared from spleen cellsof both HSV-1-immunized mice(TF_(HSV)-1)and control group animals(TFn)4 weeks after immunization.The leukocyte adherence inhibitionindex(LAII)demonstrating the spe-cific activity of TF_(HSV)-1 in vitrowas found to be significantly higherthan that of control(P