1.Study and Application of Information System for Hospital Material Flow Management
Junlan LIU ; Dongxue HAN ; Yafang LI ; Youcai TAO ; Zhi CAO
Chinese Medical Equipment Journal 1989;0(03):-
Objective To develop an information system for hospital material flow management.Methods The system,taking financial accounting and hard assets controlling as the primary purpose and making the flow rebuild as the masterstroke,mainly consisted of seven functions as follows: management of medical material and non-hygiene material,management of antisepsis providing department,management of hard assets,management of drug,management of storehouse materials economical using and support in peacetime and war time,management of biohazard waste and management of the budget of finical IC card department.Results The system formed the information chain of the whole hospital material flow process and effectively controlled the hospital medical costs and operational costs.Furthermore,the system firstly developed the storehouse material economical using and support management system both in peacetime and war time in our country.Conclusion The information system for hospital material flow management can resolve the problem of financial and material management divorce and promote the hospital holistic management level.
2.Synergistic effect of high mobility group protein B1 on calcium phosphate-induced release of inflammatory cytokines from macrophages
Youcai FENG ; Yaoliang DENG ; Zhiwei TAO ; Xiang WANG ; Chengyang LI ; Peng HUANG ; Bo WU
Chinese Journal of Tissue Engineering Research 2014;(33):5317-5322
BACKGROUND:More and more evidence suggests that macrophages and inflammation reactions are involved in the formation and development of nephrolithiasis. Previous studies have found that calculi crystals can stimulate macrophages to release high mobility group protein B1.
OBJECTIVE:To investigate the synergistic effect of high mobility group protein B1 in calcium phosphate induced release of interleukin-1β, interleukin-6, tumor necrosis factorαand monocyte chemotactic factor 1 from human macrophages.
METHODS:(1) The induced U937 cells were respectively stimulated with RPMI (blank), 100 mg/L calcium phosphate, 100μg/L high mobility group protein B1 and 100 mg/L calcium phosphate+100μg/L high mobility group protein B1 for 1, 2 and 4 hours to col ect cellsupernatant. (2) The induced U937 cells were respectively stimulated with 100 mg/L calcium phosphate, 100 mg/L calcium phosphate+10μg/L high mobility group protein B1, 100 mg/L calcium phosphate+50μg/L high mobility group protein B1, 100 mg/L calcium phosphate+100μg/L high mobility group protein B1 for 4 hours to col ect cellsupernatant. Levels of interleukin-1β, interleukin-6, tumor necrosis factorαand monocyte chemotactic factor 1 were determined by ELISA.
RESULTS AND CONCLUSION:The levels of interleukin-1β, interleukin-6, tumor necrosis factorαand monocyte chemotactic factor 1 in the cellculture supernatant of 100 mg/L calcium phosphate group and 100μg/L high mobility group protein B1 group were both higher than those in the blank group in a time-dependent manner (P<0.05). The levels of interleukin-1β, interleukin-6, tumor necrosis factorαand monocyte chemotactic factor 1 in the cellculture supernatant of different concentrations of high mobility group protein B1 groups were al higher than those in the 100 mg/L calcium phosphate group in a concentration-dependent manner (P<0.05). The results suggest that both calcium phosphate and high mobility group protein B1 can induce the release of interleukin-1β, interleukin-6, tumor necrosis factorαand monocyte chemotactic factor 1 from human macrophages and the high mobility group protein B1 has the synergistic effect with calcium phosphate to induce interleukin-1β, interleukin-6, tumor necrosis factorαand monocyte chemotactic factor 1 from human macrophages.
3.Enhancing definitive hematopoiesis signals improves the efficiency of natural killer cell generation derived from human embryonic stem cells
Zhaohui ZHANG ; Xiaofeng YIN ; Boning XU ; Qinghua BI ; Qiangqiang LAI ; Yan JI ; Tao LIU ; Limeng DAI ; Gaoke LIU ; Youcai DENG
Immunological Journal 2023;39(10):839-846
This study explores the effects of enhancing the definitive hematopoiesis(DH)signals during the differentiation of human embryonic stem cells(hESCs)into hematopoietic stem/progenitor cells on the generation efficiency and effector function of natural killer(NK)cells generated from hESCs(also known as hESC-NK cells).The hESC(H1)were transformed into embryoid bodies(Ebs)by centrifugation,and during the induction of K562,were used to analyze the efficiency of hematopoietic differentiation,the efficiency of NK cell generation from hESC,the in vitro effector functions,and the expression of effector function related surface receptors.Compared to the control group,the DH group had a significant increase in the number of arterial hematopoietic endothelial cells(CD34+DLL4+)and a significant decrease in primitive hematopoietic related cells(CD34-CD43+)on day 8 of hematopoietic differentiation(P<0.05).On day 28 of NK cell differentiation,the DH group demonstrated a significant increase in the number of NK cells(CD45+CD56+),while a slight increase in the expression of effector function-related molecules such as IFN-γ,Granzyme B,Perforin and CD107a without statistical significance.Furthermore,the activation receptors CD16a and CD69 were significantly increased,NKP46 was significantly decreased,the inhibitory receptor NKG2A was significantly increased,while CD96 was significantly decreased on hESC-NK cells of DH groups(P<0.05).Conclusively,enhancing the signals for definitive hematopoiesis during hESC differentiation into hematopoietic stem/progenitor cells significantly improves the yield of NK cells and the expression of CD16a without affecting their in vitro effector functions.Our study provides a new approach to improving the efficiency of hESC-NK cell or iPSC-NK cell generation.
4.Activation of an unconventional meroterpenoid gene cluster in leads to the production of new berkeleyacetals.
Tao ZHANG ; Jun WAN ; Zhajun ZHAN ; Jian BAI ; Bingyu LIU ; Youcai HU
Acta Pharmaceutica Sinica B 2018;8(3):478-487
Fungal genomes carry many gene clusters seemingly capable of natural products biosynthesis, yet most clusters remain cryptic or down-regulated. Genome mining revealed an unconventional paraherquonin-like meroterpenoid biosynthetic gene cluster in the chromosome of . The cryptic or down-regulated pathway was activated by constitutive expression of pathway-specific regulator gene encoded within biosynthetic gene cluster. Chemical analysis of mutant -OE: extracts enabled the isolation of four berkeleyacetal congeners, in which two of them are new. On the basis of careful bioinformatic analysis of the coding enzymes in the gene cluster, the biosynthetic pathway of berkeleyacetals was proposed. These results indicate that this approach would be valuable for discovery of novel natural products and will accelerate the exploitation of prodigious natural products in filamentous fungi.