Biomechanical Response of Macrophages/Microglia Cells to Blast Shock Injury in Mice / 医用生物力学

Objective To establish a blast injury experimental model using a shock tube at lateral lying position of C57BL/6 mice, investigate biomechanical responses of macrophages/microglia cells in the heart, lung and brain tissues to mechanical damage by shock wave within 24 hours. Methods Shock tube was employed to generate a shock wave to C57BL/6 mice. Firstly, the weight changes of mice were measured at different time points after the shock. Then the cardiac, pulmonary and whole brain tissue samples were dissected after anesthesia. Pathological sections were stained with HE staining to detect structural damage; the TUNEL staining method was used to mark and count the proportion of dead cells in each tissue. Microglial cells were labeled with fluorescent antibody, while responses and changes of macrophages/microglia after shock loading were analyzed. Results The shock tube exerted 179 kPa overpressure shock wave upon sideway of the mouse, and lethal rate of the mouse was 3.33%. Compared with normal control group, the mice in experimental group had a significant weight loss within 24 hours after loading shock. Pathological sections showed rupture of lung tissues after shock, accompanied by alveolar protein deposition, pulmonary bulla and other diseases. Fluorescence staining showed that lung tissue was recruited and activated in a large amount within 24 hours. The proportion of dead cells cleared rebounded to normal level within 24 hours. The heart was highly tolerant to shock, and macrophages appeared near the large blood vessels. The brain showed unilateral aggregation of microglia due to the impact posture, mainly due to prolonged inflammation and a higher proportion of dead cells at the junction of gray and white matter. Conclusions A blast shock model at lateral lying position of the mouse was established. Within 24 hours, macrophages/microglia were recruited quickly to the injury site after being impacted, which mediated strong immune stress, and might participate in the immune response to trigger a second long-term inflammatory injury. The results of the study provide experimental basis for the evaluation of primary impact injury, such as dose-effect relationship and tissue damage difference.

efficacy oof febuxostat and allopurinol in the treatment of gout with hyperuricemia

The aim of this research work was to observe and analyze the efficancy of febuxostat and allopurinol in the treatment of gout with hyperuricemia. The 160 patients who has been diagnosed with gout and hyperuricemiain our hospital were selected as research objects. They were randomly divided into research group and control group, each containing 80. The control group received conventional allopurinol treatment, while the research group was treated with febuxostat. Then, the treatment efficacy was compared between the two groups. Through comparison of blood uric acid levels between the two groups after treatment, it can be known that improvement was more significant in the research group, P<0.05. The adverse reaction rate in the research group was significantly lower, P<0.05. For patients with gout and hyperuricemia, febuxostat therapy has better efficacy than that of allopurinol

A clinical review of 3 cases of children with bronchial tumor / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>To investigate the clinical characteristics of bronchial tumors in 3 children to improve the diagnosis of pediatric bronchial tumor.</p><p><b>METHODS</b>Three cases of children bronchial malignant tumors diagnosed by rigid bronchoscopy were analyzed retrospectively.</p><p><b>RESULTS</b>The 3 children were males, aged from 6 to 10 years old, and presented with cough, sputum, and fever symptoms for 1 day to 3 months. Chest CT scan and airway remodeling examinations indicated the children's main bronchi were blocked and then the diagnoses of bronchial foreign bodies were made. However bronchial tumors were found in the 3 children by rigid bronchoscopy and were determined as mucoepidermoid carcinoma, large cell lung carcinoma with rhabdoid phenotype, and inflammatory myofibroblastic tumor, respectively.</p><p><b>CONCLUSIONS</b>Children with bronchial tumor often present with cough, wheezing and other respiratory symptoms that are not specific to bronchial tumor. When a child complaint of repeated cough and wheezing symptoms with unknown cause, not only bronchial foreign body and also bronchial tumor should be considered.</p>

Risk factors of acute respiratory dysfunction in children with airway foreign body / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>This study aims to analyze the independent risk factors of acute respiratory dysfunction (ARD) in children with airway foreign body and to assess possible prevention and treatment option in the future.</p><p><b>METHODS</b>Clinical data of 456 cases of children with airway foreign body were retrospectively collected and analyzed by cluster sampling, including 246 males and 210 females, who received operation in our hospital between July, 2009 and December, 2012, aged 0.5-11 years old, onset to treatment time was 0.15-14 days. Clinical characteristics including age, gender, past medical history, time of onset, temperature, location of the foreign body, category of foreign bodies, complicated by pneumonia, complicated by subcutaneous and mediastinal emphysema were gathered. Temperature, respiratory rate, heart rate, cyanosis, transcutaneous oxygen saturation or arterial blood analysis were assayed before operation. Risk factors with statistical significance were screened with univariate logistic regression analysis, independent risk factors of ARD were determined with multivariate logistic regression analysis.</p><p><b>RESULTS</b>Acute respiratory dysfunction occurred in 78 (17.1%) patients. The foreign bodies in 455 cases were successfully removed brochoscopically in the first time. One case received chest surgery for foreign body removal. Total of 452 cases were successfully extubated and ventilator weaned 4-6 h after brochoscopy. In 2 cases, the ventilator was weaned 2-4 d after brochoscopy in ARD group, and 2 cases with severe pneumonia died. Age, location of the foreign body, temperature, complicated by pneumonia, complicated by subcutaneous and mediastinal emphysema did not show significant difference between acute respiratory dysfunction group and non- acute respiratory dysfunction group (P < 0.05). Multivariate logistic regression analysis showed location of the foreign body and complicated by pneumonia, complicated by subcutaneous and mediastinal emphysema were independent risk factors for ARD.</p><p><b>CONCLUSION</b>Early judgement of the risk factors of acute respiratory dysfunction in children with airway foreign body can provide a reference for the operation and perioperation period treatment.</p>

The influence of earlier rehabilitation and defibrase on the hemodynamic cerebral vascular dynamic index of patients with acute cerebral infarction / 中华物理医学与康复杂志

Objective To investigate the influence of early rehabilitation and defibrase on the hemodynamic cerebral vascular dynamic index (CVDI) of hemiplegic patients with acute cerebral infarction. Methods Ninety hemiplegic patients with acute infarction were randomly divided into a rehabilitation and a control group. Both groups received defibrase routine treatment. The rehabilitation group received systematic rehabilitation training in addition. The Fugl-Meyer assessment ( FMA) , the Scandinavian Scoring Scale ( SSS) and Barthel's index ( MBI) were employed to evaluate the functioning of the two groups. The CVDIs of all patients were quantified before and after treatment. Results The FMA, MBI and SSS scores as well as the CVDIs of both groups had improved after 4 weeks of treatment, but all were more improved in the rehabilitation group than in the control group. Conclusions Early rehabilitation was effective for relieving neurological impairment and improving ability in the activities of daily living for patients with acute cerebral infarction.

Auditory brainstem response and DPOAE in autism children / 中国耳鼻咽喉头颈外科

OBJECTIVE To explore the audiological characteristics in children with autism. METHODS Agroup of 20 children with autistic disorder were included in an investigation of auditory brain stern responses(ABR)and distortion product otoacoustic emissions(DPOAE).The results were compared with those in 18 normal children of agematched. RESULTS①As compared with the values in the control group,the latency of waveⅤfor both ears,waveⅠ-Ⅴand waveⅢ-Ⅴintervals for the right were significantly prolonged(P

EFFECT OF DIFFERENT NUTRITIONAL STATUS OF BABIES ON THEIR GROWTH AND INTELLIGENCE ABOUT 3 YEARS OLD / 营养学报

Objective To explore the effect of babies’ nutritional status on their growth and intelligence about 3 years old. Method With stratified random sampling,according to the data of height and weight,obtained from general survey of nutritional status in all infants aged 0-1 in one county of Fuyang town,Anhui Province in April 2004,we classified the infants into three groups,corresponding to≥ x + s,