Pleurodesis with an Autologous Blood Patch in the Treatment of Persistent Air Leak after Lung Resection / 中国医学科学院学报

Objective To evaluate the efficacy and risks of autologous blood patch pleurodesis in patients with persistent air leak(PAL)after lung resection. Methods A total of 97 patients with PAL after lung resection in Beijing Shijitan Hospital from October 2014 to October 2019 were retrospectively reviewed,including 53 treated by autologous blood patch pleurodesis and 44 by the conventional way.The therapeutic effect,adverse reactions and complications were analyzed. Results All the patients with PAL were cured with autologous blood patch pleurodesis.Most air leaks(81.1%)ceased within 48 hours after treatment,and the left 18.9% patients got cured after a repeat.The mean tube retention time and the mean in-hospital stay were 8.4 days and 10.0 days in the autologous blood patch pleurodesis group and 13.5 days and 15.3 days in the conventional treatment group.A prolonged drainage time(P=0.00)and in-hospital stay(P=0.00)were observed in the conventional treatment group.No severe complications were observed except two patients developed slight fever and cutaneous emphysema. Conclusion In our experience,the autologous blood patch pleurodesis is an effective way with low risk of adverse reactions in the treatment of PAL.

Comparison of contents of three active ingredients in Bletilla striata from different sources / 中国中药杂志

In order to understand the difference of contents of coelonin,batatasin Ⅲ and 3'-O-methylbatatasin Ⅲ in 60 different sources of Bletilla striata planted under the same conditions. UPLC method was used and the analysis was performed on a Waters ACQUITY UPLC BEH C18 column( 2. 1 mm×100 mm,1. 7 μm),eluted with acetonitril-0. 1% formic acid solution by gradient. The flow rate was 0. 208 m L·min-1,the detection wavelength was 270 nm,the column temperature was 35 ℃ and the injection volume was 4μL. Under the above chromatographic conditions,the three components can be separated well with good linearity in the range of 0. 156-5. 000 mg·L-1. The average contents of coelonin,batatasin Ⅲ and 3'-O-methylbatatasin Ⅲ were( 0. 116 ± 0. 071) %,( 0. 386 ±0. 185) % and( 0. 086±0. 034) %,respectively. After planting for two years under the same conditions,there was no significant difference in chemical composition among different sources and varieties,but the contents of the three components had some regional differences,which indicated that the western region was higher than the eastern region,while the contents of coelonin and batatasin Ⅲ in B.sinensis were slightly higher than those in B. striata. The chromatographic method above is simple,stable and reproducible,and can be used for quantitative analysis of three components. The content analysis of different sources of B. striata can provide reference for future B. striata breeding and quality control.

Effects of Stored Apheresis Platelet Apoptosis on Aggregation Function / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To investigate the effects of storage lesion in apheresis platelets on platelet apoptosis and the changes of aggregation function, and analyze the relationships between the apoptosis and aggregation function.</p><p><b>METHODS</b>Platelet samples were collected from 10 healthy donors with O blood group. Firstly, the effects of storage lesion in platelets on the platelet apoptosis were detected by flow cytometry. Then, using a multiplate analyzer, individual-donor Plt aggregation response to stimulation by the agonists ADP, Collagen, TRAP and ASPI was examined. Finally, the relationships between its apoptosis and aggregation function was analyzed by correlation regression analysis.</p><p><b>RESULTS</b>By flow cytometry it was found that with the prolonging of storage time, the apoptosis ratio of platelets significantly increased in a time-dependent manner, the apoptosis rates of platelets on 2nd, 5th and 8th day were (2.87±0.31)%, (11.08±1.54)% and (27.99±2.76)% respectively (P<0.01). Compared with Day 2 platelets, the d 5 platelets stored for 5 d significantly decrease the aggregation response to stimnlation of collagen, TRAP, and ASPI. Compared with platelets stored for 5 d, platelets stored for 8 d significantly decreased the aggregation response to stimnlation of collagen, TRAP and ASPI (P<0.01). However, when stimulated by ADP, the aggregation response was similar among Day 2, Day 5 and Day 8 platelets. The rate of the aggregation function was also declined significantly when stimulated by collagen, TRAP, and ASPI, but not ADP. Further regression analysis showed that the aggregation function of apheresis platelet negatively correlated with the apoptosis (r=-0.9497, r=-0.9527, r= -0.9707 and r= -0.9352 respectively), and the correlation is very strong.</p><p><b>CONCLUSION</b>With the prolonging of storage time, the apoptosis ratio in platelets significantly increased. The aggregation function also is declined significantly when stimulated by collagen, TRAP, and ASPI, but not ADP. The aggregation function of apheresis platelets closly correlats with the apoptosis.</p>

Protoplasts isolation, purification and plant regeneration of Pinellia cordata / 中国中药杂志

The main factors which affected the isolation, purification and cultivation of Pinellia cordata protoplasts from leaves were studied. The results indicated that the optimum enzyme solution for P. cordata leaves was 13% CPW + 1.0% Cellulose +0.1% Pectolase, at pH 6.0, temperature (25-28 degrees C ) for 4 h. The sucrose density gradient centrifugation was adopted to purificate the protoplasts collected, when 25% sucrose was used as mediator, centrifugating at 500 rpm for 10 min. When the protoplasts were shallow liquid and liquid-solid double layer cultured on the medium of MS + 0.5 mg x L(-1) 6-BA + 0.25 mg x L(-1) NAA + 13% mannitol at the density of 2.5 x 104 protoplasts/mL, or fed and nursed cultured at the density of 100-500 protoplasts/mL, cell division could be observed for 3 days; granular calli appeared for 30 days. Calli was proliferated on the medium of MS + 0.5 mg x L(-1) 6-BA + 0.25 mg x L(-1) NAA solidified by 0.55% agar, and differentiated and regenerated after 5-6 months. Plant generation of P. cordata is successfully established.

Rapid propagation of Bletilla striata by synthetic seeds technology / 中国中药杂志

<p><b>OBJECTIVE</b>To establish a new manufacturing method for Bletilla striata synthetic seeds, and provided a new way for rapid propagation of B. striata, the correlated influential factors were studied.</p><p><b>METHOD</b>The synthetic seeds were manufactured by taking seeds of B. striata as materials which were beforehand germinated in 1/2 MS medium for 10 days, and the influential factors such as artificial endosperm components, episperm substances, storage conditions and germination groundmass impact on the germination rate and seedling rate of the synthetic seeds were evaluated.</p><p><b>RESULT</b>Compound 4.0% sodium alginate + 0.2 mol x L(-1) CaCl2 + 0.4 mg x L(-1) penicillin + 0.3% carbendazim powder + 0.2% sodium benzoate served as the best episperm substances while MS + 1.0 mg x L(-1) NAA + 2.0 mg x L(-1) KT as the best endosperm components, in which, high germination rate and seedling rate were obtained. The synthetic seeds storing in the 4 degrees C for a long time was able to have still high vitality.</p><p><b>CONCLUSION</b>The B. striata synthetic seeds manufacturing system was established successfully, while efforts should be taken to improve the sowing technique of the synthetic seeds in non-sterile conditions.</p>

Study function of endophytic fungus in parasitism process of mistletoe / 中国中药杂志

<p><b>OBJECTIVE</b>To research the function of endophytes of mistletoe in parasitism process of mistletoe in Pterocarya stenoptera.</p><p><b>METHOD</b>Endophytes from eight different parts of the mistletoe were separated by explant culture, and further screened by different CMC plates culture and DNS method to get cellulase high productive strains. The distribution of the endophytic fungus parasitized in mistletoe were prepared and stained to demonstrate by histological section of the intumescentia part of the P. stenoptera.</p><p><b>RESULT</b>The histological section indicated that aboundent of hyphasma were distributed around the haustorium of the mistletoe. Eighty three strains of endophytic fungus were separated, 38 of them were able to degrade cellulose, 19 strains showed high cellulase activity and 10 of which were separated from the parasitic position.</p><p><b>CONCLUSION</b>Endophytic fungus of mistletoe can secrete cellulase and assist the haustorium of mistletoe to breakthrough the cell walls as well as intercellular space tissues of the P. stenoptera, thus, the endophytic fungus plays an important role in the parasitism process of mistletoe in P. stenoptera.</p>