摘要:目的:探討卡配因抑制劑3（MDL28170）對新生大鼠缺氧缺血性腦損傷(HIBD)神經細胞凋亡的影響。方法:建立新生SD大鼠HIBD模型,治療組于缺養缺血后即刻、2 h、4 h腹腔內注射MDL28170,對照組及手術組同時予生理鹽水。缺氧缺血后24 h用免疫組化方法觀察大腦皮質及海馬CA1區Caspase3 蛋白表達、TUNEL法檢測細胞凋亡,觀察組織病理改變并計算海馬神經元死亡數,透射電鏡觀察細胞超微結構。結果:缺氧缺血后24 h缺血側大腦皮質及海馬CA1區Caspase3和TUNEL陽性細胞數較對照組明顯增加,透射電鏡證實有凋亡細胞;MDL28170可減少陽性細胞數量,抑制神經元死亡,差異有顯著性(Plt;0.05)。結論:MDL28170可通過抑制神經凋亡而對新生大鼠HIBD具有一定保護作用。Abstract: Objective: To investigate the effect of (Calpain inhibitor3) MDL28170 on neural apoptosis in a neonatal model of hypoxicischemic brain damage (HIBD). Methods: A neonatal model of HIBD was established, 7dayold SD rats were divided into three groups. The treatment group received MDL28170(ip) at 0 h,2 h,4 h after HI, whereas the other two groups were administered normal saline simultaneously. The expression of caspase3 (by immunohistochemistry), neural apoptosis (by TUNEL) in cortex and hippocampus ipsilateral to the insult were observed 24 h after HI; hippocampal CA1 neural loss and electromicroscopic changes were assessed at the same time. Results: Apoptotic body was observed by electromicroscopy. Caspase3 positive cells and apoptotic cells increased significantly in the ipsilateral cortex and hippocampal CA1 region compared to the control, and MDL28170 reduced the number of positive cells, attenuated CA1 neural loss with significance (Plt;0.05). Conclusion: It is suggested that MDL28170 may protect the brain of neonatal rats after HIBD by suppressing neural apoptosis.
摘要：目的：探討血小板動態變化與新生兒重癥肺炎之間的關系。方法：測定40例新生兒重癥肺炎患兒急性期（3天）及恢復期（10天）的血小板計數（platelet count, PLT）計數、平均血小板溶劑（mean platelet volume, MPV）、血小板壓積（platelet hematocrit, PCT）及血小板分布寬度（platelet distribution width, PDW），并進行比較。結果：40例重癥肺炎患兒中，PLT隨病情好轉而上升，PCT、MPV、PDW水平隨病情好轉而下降。急性期PLT、PCT、MPV、PDW的水平與恢復期相比，差異有統計學意義（Plt;0.05）。結論：動態的觀察血小板參數及其變化有助于新生兒重癥肺炎的評估及療效觀察。Abstract : Objective: To assess the relationship between neonatal severe pneumonia and platelet. Methods: We test platelet count, mean platelet volume, platelet hematocrit and platelet distribution width in 40 patients whom diagonosed neonatal svere pneumonia; moreover, we compared the platelet change in acute phase and recovery phase. Results: Mean platelet volume, platelet count increased with recovery of pneumonia (Plt;0.05). Conclusion: Observing platelet change is helpful for the evaluation of neonatal pneumonia.
摘要:目的:分析高膽紅素血癥新生兒血清神經元特異性烯醇化酶(NSE)含量和新生兒行為神經能力測評(Neonatal Behavioral Neurological Assessment,NBNA)的變化,探討高膽紅素血癥新生兒血清NSE含量變化的臨床意義。方法:應用放射免疫分析法分別測定60例高膽紅素血癥新生兒和20例對照組新生兒血清NSE含量,同步測定血清總膽紅素(TSB),進行NBNA評分;高膽紅素血癥組早期干預后再次測定血清NSE含量。結果: 與對照組比較,高膽紅素血癥新生兒血清TSB、NSE含量顯著升高,而NBNA評分明顯降低,差異有顯著性意義(Plt;0.01);對照組與高膽紅素血癥新生兒輕度增高、中度增高、重度增高四組兩兩比較(均Plt;0.05),存在顯著性差異;血清NSE含量與NBNA評分呈明顯負相關(r=-0628,Plt;0.01);高膽紅素血癥新生兒經早期干預治療后,血清NSE含量均下降(Plt;0.05),差異有顯著性。結論: 高膽紅素血癥可導致新生兒腦損傷,血清NSE含量可以作為腦損傷的監測指標。Abstract: Objective: To analyze levels of neuronspecific enolase(NSE)in serum and neonatal behavioral neurological assessment (NBNA), to study whether NSE in serum can be used as a tool for the early identification of brain damage in neonatal hyperbilirubinemia. Methods: Serum NSE level of 60 full term infants with hyperbilirubinemia and 20 cases as to control group were measured by radioimmunoassay; Also total serum bilirubin (TSB) and NBNA were detected. In the hyperbilirubinemia group,serum NSE level were measured second when TSB were less than 855 μmol/L(5 mg/dL). Results: Compared with control group,the levels of serum TSB、NSE of the hyperbilirubinemia group were significantly higher, but NBNA score was significantly lower. The levels of serum NSE was significantly negative related to NBNA score. In the hyperbilirubinemia group, serum NSE level were significantly lower after treatment. Conclusion: Hyperbilirubinemia in neonates can cause brain damage. Serum NSE level could work as monitoring indexes of this damage.
