目的分析输血次数与多次输血血液病患者输注效果的关系。方法选取2020年5月—2023年7月菏泽市立医院收治的600例多次输血(≥2次)的血液病患者作为研究对象,根据输血次数不同将患者分为A组225例(2~3次)、B组195例(4~6次)及C组180例(≥7次...目的分析输血次数与多次输血血液病患者输注效果的关系。方法选取2020年5月—2023年7月菏泽市立医院收治的600例多次输血(≥2次)的血液病患者作为研究对象,根据输血次数不同将患者分为A组225例(2~3次)、B组195例(4~6次)及C组180例(≥7次)。比较3组患者血小板抗体阳性率;比较血小板抗体阳性与阴性患者输注血小板后1、24 h校正血小板计数增加值(CCI)及输注有效率。结果600例患者中共226例患者检测血小板抗体阳性,阳性率为37.67%,其中C组血小板抗体阳性率高于A、B组(P<0.01)。血小板抗体阳性者输注后1、24 h CCI及输注有效率均低于血小板阴性患者(P<0.01)。结论输血次数越多,血液病患者血小板抗体阳性率越高,而血小板抗体阳性患者的血小板输注效果较差,而血小板抗体筛查能有效提高输血效果。展开更多
Blue and red lights differently regulate leaf photosynthesis. Previous studies indicated that plants under blue light generally exhibit better photosynthetic characteristics than those under red light. However, the re...Blue and red lights differently regulate leaf photosynthesis. Previous studies indicated that plants under blue light generally exhibit better photosynthetic characteristics than those under red light. However, the regulation mechanism of related photosynthesis characteristics remains largely unclear. Here, four light qualities treatments （300 μmol m-2 s-1） including white fluorescent light （FL）, blue monochromatic light （B, 440 nm）, red monochromatic light （R, 660 nm）, and a combination of red and blue light （RB, R：B=8：1） were carried out to investigate their effects on the activity of photosystem II （PSII） and photosystem I （PSI）, and photosynthetic electron transport capacity in the leaves of cucumber （Cucumis sativus L.） seedlings. The results showed that compared to the FL treatment, the R treatment significantly limited electron transport rate in PSII （ETR11） and in PSI （ETR1） by 79.4 and 66.3%, respectively, increased non-light induced non-photochemical quenching in PSII （q^No） and limitation of donor side in PSI （φND） and reduced most JIP-test parameters, suggesting that the R treatment induced suboptimal activity of photosystems and inhibited electron transport from PSII donor side up to PSI. However, these suppressions were effectively alleviated by blue light addition （RB）. Compared with the R treatment, the RB treatment significantly increased ETR, and ETR1 by 176.9 and 127.0%, respectively, promoted photosystems activity and enhanced linear electron transport by elevating electron transport from QA to PSI. The B treatment plants exhibited normal photosystems activity and photosynthetic electron transport capacity similar to that of the FL treatment. It was concluded that blue light is more essential than red light for normal photosynthesis by mediating photosystems activity and photosynthetic electron transport capacity.展开更多
文摘目的分析输血次数与多次输血血液病患者输注效果的关系。方法选取2020年5月—2023年7月菏泽市立医院收治的600例多次输血(≥2次)的血液病患者作为研究对象,根据输血次数不同将患者分为A组225例(2~3次)、B组195例(4~6次)及C组180例(≥7次)。比较3组患者血小板抗体阳性率;比较血小板抗体阳性与阴性患者输注血小板后1、24 h校正血小板计数增加值(CCI)及输注有效率。结果600例患者中共226例患者检测血小板抗体阳性,阳性率为37.67%,其中C组血小板抗体阳性率高于A、B组(P<0.01)。血小板抗体阳性者输注后1、24 h CCI及输注有效率均低于血小板阴性患者(P<0.01)。结论输血次数越多,血液病患者血小板抗体阳性率越高,而血小板抗体阳性患者的血小板输注效果较差,而血小板抗体筛查能有效提高输血效果。
基金supported by the Special Fund for Nonprofit Industry (Agriculture) Research Project (201303014)Earmarked Fund for Beijing Fruit Vegetable Innovation Team Project of Modern Agro-industry Technology Research System (GCTDZJ2014033007) in China
文摘Blue and red lights differently regulate leaf photosynthesis. Previous studies indicated that plants under blue light generally exhibit better photosynthetic characteristics than those under red light. However, the regulation mechanism of related photosynthesis characteristics remains largely unclear. Here, four light qualities treatments （300 μmol m-2 s-1） including white fluorescent light （FL）, blue monochromatic light （B, 440 nm）, red monochromatic light （R, 660 nm）, and a combination of red and blue light （RB, R：B=8：1） were carried out to investigate their effects on the activity of photosystem II （PSII） and photosystem I （PSI）, and photosynthetic electron transport capacity in the leaves of cucumber （Cucumis sativus L.） seedlings. The results showed that compared to the FL treatment, the R treatment significantly limited electron transport rate in PSII （ETR11） and in PSI （ETR1） by 79.4 and 66.3%, respectively, increased non-light induced non-photochemical quenching in PSII （q^No） and limitation of donor side in PSI （φND） and reduced most JIP-test parameters, suggesting that the R treatment induced suboptimal activity of photosystems and inhibited electron transport from PSII donor side up to PSI. However, these suppressions were effectively alleviated by blue light addition （RB）. Compared with the R treatment, the RB treatment significantly increased ETR, and ETR1 by 176.9 and 127.0%, respectively, promoted photosystems activity and enhanced linear electron transport by elevating electron transport from QA to PSI. The B treatment plants exhibited normal photosystems activity and photosynthetic electron transport capacity similar to that of the FL treatment. It was concluded that blue light is more essential than red light for normal photosynthesis by mediating photosystems activity and photosynthetic electron transport capacity.
