Objective To investigate the mRNA expression of ciliary neurotrophic factor on the retina during injury and repair of optic nerves in rats. Methods Thirty-five healthy SD rats were randomly divided into 3 groups: 5 in the control group, 15 in the simply transected optic nerve group and 15 in the optic nerve-sciatic nerve anastomosis group. The simply transected and optic nerve-sciatic nerve anastomosed models were set up, and the retinal tissues of all of the rats were taken out after 3, 7 and 14 days, respectively; and the mRNA expression of CNTF in the 3 groups were observed by semiquantitative reversal transcription-polymerase chain reaction method. Results A minimum expression of CNTF mRNA was found in the retinae of the control group, and the increased rates of expression were found in the retinae of the simple transection of optic nerve group with the increase rate of 100%, 594%, and 485% on the 3rd, 7th, and 14th day respectively after the operation, while in optic nerve-sciatic nerve anastomosis group, the increase rates were found to be 258%, 752% and 515% on the 3rd, 7th, and 14th day respectively after the operation. Conclusion Retinal neurons can respond to axonal reaction of retinal ganglion cells by up-regulate endogenous CNTF after the injury of the optic nerves, which may provide a theoretic base for the application of the exogenous CNTF. (Chin J Ocul Fundus Dis，2004，20：355-357)
Objective To compare the effects of two kinds of cannulation sites on the myocardial oxygen metabolism during left ventricular assistance to provide experimental basis for clinical selection of proper cannulation sites. Methods Twelve mongrel dogs were randomized equally into the left atrium to aorta group （LA group） and left ventricle to aorta group （LV group）, and underwent left ventricular assistance. At different times before and during left ventricular assistance, the heart rate, coronary sinus flow rate and blood gas were determined and coronary sinus oxygen saturation, arteriovenous oxygen difference and myocardial oxygen consumption were calculated. Results There was no statistical difference of heart rate in both groups（P〉0. 05）. The coronary sinus flow rate and mean myocardial oxygen consumption reduced in both groups after left ventricular assistance, whereas the effect was more remarkable in the LV group （P〈0.01）. Conclusion Both cannulation methods could reduce the myocardial oxygen consumption during left ventricular assistance, and the effect is more apparent in left ventricular cannulation.
目的:探讨血清铁蛋白（SF）、红细胞参数（红细胞计数RBC、血红蛋白HGB、红细胞体积MCV）及炎症标志物（白细胞计数WBC、纤维蛋白原FIG、血沉ESR）与老年代谢综合征（MS）的关系。方法:148例老年人,依据MS组分数量多少分为MS0（无MS组分）、MS1～2（有1～2个MS组分）和MS3～5（有3～5个MS组分）三组。测定三组的血SF、空腹血糖FPG、甘油三酯TG、高密度脂蛋白胆固醇HDL-C、RBC、HGB、MCV、WBC、FIG及ESR水平,并进行分析。结果:老年女性及非吸烟老年男性MS组SF、RBC、HGB、WBC及ESR均较MS0组高。老年女性的SF、WBC与腰围,SF、RBC、HGB、WBC与MS组分数量,SF与RBC,均呈正相关。老年非吸烟男性的WBC与TG,HGB与MS组分数量,MCV与BMI及腰围,FIG与BMI,呈正相关。老年人HGB与DBG、TG呈正相关；与HDL-C呈负相关。结论:SF水平与MS发展相关,MS组分数量增加与聚集、超重与肥胖,可能促进体内感染状态。有MS的老年男女,常呈现低度感染状态,但同时又有一定的铁储备及相对稳定的造血机能；无MS的老年男女造血功能倾向减退。老年男性吸烟者较非吸烟者易呈现感染状态,并具有较低的铁储备。
Objective To explore the effects of Metabolic Syndrome (MS) and its components on the condition and prognosis of patients with Severe Pneumonia. Methods 306 patients with severe pneumonia admitted to the intensive care unit of Guangdong Provincial Hospital of Traditional Chinese Medicine from January 2020 to July 2023 were included as study subjects.The patients were divided into MS and non-MS groups according to whether they were combined with MS,and into survival and death groups according to 28-day prognosis,and the general data, laboratory indexes, condition and prognostic indexes of the two groups were compared; multifactorial logistic regression was used to analyze the independent risk factors for the prognosis of patients with severe pneumonia. ResultsThe levels of test indicators such as body mass index (BMI), fasting blood glucose (FBG), triglyceride (TG), blood lactate,white blood cell count(WBC),urea phosphate (Urea), creatinine (SCr),as well as the incidence of acute respiratory distress syndrome (ARDS), shock,multiple organ dysfunction syndrome (MODS), rate of endotracheal intubation and mortality, ICU treatment cost,and total treatment cost of the MS group were significantly higher than those of the non-MS group; the levels of high-density lipoprotein cholesterol (HDL-C) and oxygenation index (OI) of the MS group were significantly lower than those of the non-MS group (P<0.05).Multifactorial logistic regression analysis showed that the risk of death from severe pneumonia was 1.276 times higher in combined MS than in no combined MS (95%CI: 1.013, 5.114, P=0.047). Subgroup analyses also showed that the risk of death from non-viral severe pneumonia was 2.147 times higher in those with MS than those without (95%CI: 1.175, 8.428, P=0.023). ConclusionSevere pneumonia with MS may be more severe and may have a worse prognosis.
OBJECTIVE:To verify the safe dose of cephradine in intravitreal injection. METHODS:After injecting different doses of cephradine(100mu;g,200mu;g,250mu;g,300mu;g,400mu;g)into vitreous cavity of different group of rabbits the activities of the retinal enzymes (SDH,LDH )on different time (Id,3d, 7d ) were determined respectively, and the histological and ultrastructural changes of retinas were also observed simuhaneously. RESULTS:The activity of rellnal SDH and LDH was found to be decreased gradually with tbe icreasing of the dosage of intravitreal cephradine. The activities of SDH and LDH were found in the lowest level on tile 3rd and lsl day,but they recover to normal levels on tile 7th day after intravitreal in}eetion in 100mu;g,200mu;g groups,and still lower tban normal in the other groups. Histologically,retinal edema was found both in 100mu;g and 200mu;g groups,but degradation of retinal cells,and loss of cones and rods were round in the 250mu;g, 300mu;g and 400mu;g groups. CONCLUSION: The safe dose of intravitreal injection of cepbradlnc is 200mu;g. （Chin J Ocul Fundus Dis,1997,13:139-142 ）
Objective\ To study the mechanism of myocardial protection of exogenous creatine phosphate (CP) against ischemia reperfused injury in modified isolated perfused working rat heart model.\ Methods\ Seventy two rats were divided into five groups.The rat hearts of five groups undergone Langendorff perfused were arrested and made totally ischemic for 40 minutes at 37℃ and reperfused for 20 minutes. St.Thomas cardioplegic solution wasn’t used in group A;It was used immediately after ischemia in group B and grou...
目的 探讨川崎病（Kawasaki disease，KD）患儿血脂代谢与冠状动脉病变之间的关系。 方法 纳入2007年1月-2009年10月住院治疗的82例KD患儿，检测治疗前后血总胆固醇（TC）、甘油三酯（TG）、高密度脂蛋白（HDL-C）、低密度脂蛋白（LDL-C）、极低密度脂蛋白（VLDL-C）、载脂蛋白A1（ApoA1）及载脂蛋白B100（ApoB100）水平。选取50例健康儿童作为对照。KD患儿在治疗前行超声心动图检查，根据超声心动图显示将KD组再分为冠状动脉病变组（CAL组，n=31）和非冠状动脉病变组（NCAL，n=51）。 结果 治疗前，KD患儿TC、ApoA1、HDLC降低，TG、LDL-C升高，与正常儿童相比有统计学意义（Plt;0.05）。KD患儿CAL组较NCAL组变化更明显，有统计学意义（Plt;0.05）。VLDL-C和ApoB100水平KD患儿与正常儿童比较、NCAL组与CAL组比较变化均不明显（Pgt;0.05）。治疗后与治疗前相比，NCAL组TC、TG、HDL-C、LDL-C、ApoA1恢复正常（Plt;0.05）），而CAL组仅TC、LDL-C、ApoA1恢复正常（Plt;0.05）。 结论 KD患儿存在血脂代谢紊乱，TC、TG、HDL-C、LDL-C、ApoA1与冠状动脉的损害有关，应早期进行干预。
Amine oxidase copper-containing 1 (AOC1) is a key member of copper amine oxidase family, which is responsible for deamination oxidation of histamine and putrescine. In recent years, AOC1 has been reported to be associated with various cancers, with its expression levels significantly elevated in certain cancer cells, suggesting its potential role in cancer progression. However, its function in lipid metabolism still remains unclear. Through genetic analysis, we have discovered a potential relationship between AOC1 and lipid metabolism. To further investigate, we generated Aoc1−/− mice and characterized their metabolic phenotypes on both chow diet and high-fat diet (HFD) feeding conditions. On HFD feeding conditions, Aoc1−/− mice exhibited significantly higher fat mass and impaired glucose sensitivity, and lipid accumulation in white adipose tissue and liver was also increased. This study uncovers the potential role of AOC1 in lipid metabolism and its implications in metabolic disorders such as obesity and type 2 diabetes, providing new targets and research directions for treating metabolic diseases.