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Postpartum Hemorrhage Following Cesarean Delivery in Women with a Scarred Uterus:A Retrospective Cohort Study

Reproductive and Developmental Medicine 2019年第4期3卷 230-234页

作者： bing-nan chen Di Wang Jia-Po Li Li-Yang Zhang Chong Qiao Department of Obstetrics and Gynaecology Shengjing Hospital of China Medical UniversityShenyang 110004China Key Laboratory of Maternal-Fetal Medicine China Medical UniversityShenyang 110004China Research Center of China Medical University Birth Cohort Shenyang 110004China

Objective:To develop a model to predict the risk of postpartum hemorrhage(PPH)following cesarean delivery in women with a scarred ***:A total of 4,637 pregnant women with scarred uterus who underwent a cesarean delivery at a large hospital between January 2014 and December 2017 were *** women were divided into PPH(n=287)and non-PPH(n=4,350)groups.A model to predict PPH(blood loss≥1,000 mL within 24 h following cesarean delivery)was developed using multivariate logistic regression *** operating characteristic curve was drawn,and the area under curve(AUC)was ***:The incidence of PPH was 6.19%(287 of 4,637 women).Seven independent risk factors were associated with PPH:maternal age(odds ratio[OR]=1.42,95%confidence interval[CI]:1.02-1.97),previous gravidity(OR=1.24,95%CI:1.01-1.50),placental location(posterior wall of uterus,OR=0.69,95%CI:0.47-1.02;other locations,OR=1.21,95%CI:0.81-1.80),placenta previa(incomplete placenta previa,OR=10.51,95%CI:5.99-18.42;complete placenta previa,OR=31.65,95%CI:21.07-47.54),placenta accreta(OR=6.39,95%CI:4.02-10.16),hypertensive disorders of pregnancy(OR=2.27,95%CI:1.40-3.68),and fetal position(breech position,OR=2.07,95%CI:1.19-3.60;transverse position,OR=1.07,95%CI:0.48-2.41).A predictive model with AUC of 0.89 was developed(95%CI:0.86-0.91,P<0.001).Conclusions:A model was developed to predict PPH following cesarean delivery in women with a scarred uterus.

关键词： Cesarean Delivery Logistic Regression Postpartum Hemorrhage Prediction Risk Factors

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Studies on sulfinatodehalogenation sulfinatodechlorination,a new reaction of carbon tetrachloride and 1,1,1-trichloropolyfluoroalkanes

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Acta Chimica Sinica(English Edition) 1984年第2期 188-189页

作者： HUANG Wei-Yuan HUANG bing-nan chen Jian-Long Shanghai Institute of Organic Chemistry,Academia Sinica

Both perfluoroalkyl iodides and bromides reacted with sodium dithionite to form thecorresponding sodium perfluoroalkanesulfinates in good yields,but under similar conditionsan analogous transformation did not take place with perfluoroalkyl *** is reportedin this paper that some compounds of the type RCCIa underwent sulfinatodechlorinationreaction to give sodium α,α-dichloropolyfluoroalkanesulfinates（RCCl2SO2Na）in good yieldsunder mild conditions.

关键词： this Studies on sulfinatodehalogenation sulfinatodechlorination,a new reaction of carbon tetrachloride and 1,1,1-trichloropolyfluoroalkanes

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Boosting cationic and anionic redox activity of Li-rich layered oxide cathodes via Li/Ni disordered regulation

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Journal of Energy Chemistry 2025年第1期100卷 533-543页

作者： Zewen Liu Zhen Wu Hao Wang Xudong Zhang Yuanzhen chen Yongning Liu Shengwu Guo Shenghua chen Yanli nan Yan Liu State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University School of Materials Science and Engineering Xi'an University of Architecture and Technology Hefei Advanced Computing Center Operation Management Corp Ltd Network Information Center Xi'an Jiaotong University

Lithium-rich layered oxides （LLOs） are increasingly recognized as promising cathode materials for nextgeneration high-energy-density lithium-ion batteries （LIBs）.However,they suffer from voltage decay and low initial Coulombic efficiency （ICE） due to severe structural degradation caused by irreversible O ***,we introduce a three-in-one strategy of increasing Ni and Mn content,along with Li/Ni disordering and TM–O covalency regulation to boost cationic and anionic redox activity simultaneously and thus enhance the electrochemical activity of *** target material,Li1.2Ni0.168Mn0.558Co0.074O2（L1）,exhibits an improved ICE of 87.2%and specific capacity of 293.2 mA h g-1and minimal voltage decay of less than 0.53 m V cycle-1over 300 cycles at 1C,compared to Li1.2Ni0.13Mn0.54Co0.13O2（Ls）(274.4 mA h g-1for initial capacity,73.8%for ICE and voltage decay of 0.84 mV/cycle over 300 cycles at 1C).Theoretical calculations reveal that the density of states （DOS） area near the Fermi energy level for L1 is larger than that of Ls,indicating higher anionic and cationic redox reactivity than ***,L1 exhibits increased O-vacancy formation energy due to higher Li/Ni disordering of 4.76%（quantified by X-ray diffraction Rietveld refinement） and enhanced TM–O covalency,making lattice O release more difficult and thus improving electrochemical *** increased Li/Ni disordering also leads to more Ni2+presence in the Li layer,which acts as a pillar during Li+de-embedding,improving structural *** research not only presents a viable approach to designing low-Co LLOs with enhanced capacity and ICE but also contributes significantly to the fundamental understanding of structural regulation in high-performance LIB cathodes.

关键词： Ice

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Peripheral blood RNA biomarkers can predict lesion severity in degenerative cervical myelopathy

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Neural Regeneration Research 2025年第6期20卷 1764-1775页

作者： Zhenzhong Zheng Jialin chen Jinghong Xu Bin Jiang Lei Li Yawei Li Yuliang Dai bing Wang Department of Spine Surgery The Second Xiangya Hospital of Central South UniversityChangshaHunan ProvinceChina

Degenerative cervical myelopathy is a common cause of spinal cord injury,with longer symptom duration and higher myelopathy severity indicating a worse *** numerous studies have investigated serological biomarkers for acute spinal cord injury,few studies have explored such biomarkers for diagnosing degenerative cervical *** study involved 30 patients with degenerative cervical myelopathy(51.3±7.3 years old,12 women and 18 men),seven healthy controls(25.7±1.7 years old,one woman and six men),and nine patients with cervical spondylotic radiculopathy(51.9±8.6 years old,three women and six men).Analysis of blood samples from the three groups showed clear differences in transcriptomic *** analysis identified 128 differentially expressed genes that were enriched in patients with neurological *** least absolute shrinkage and selection operator analysis,we constructed a five-gene model(TBCD,TPM2,PNKD,EIF4G2,and AP5Z1)to diagnose degenerative cervical myelopathy with an accuracy of 93.5%.One-gene models(TCAP and SDHA)identified mild and severe degenerative cervical myelopathy with accuracies of 83.3%and 76.7%,*** of two immune cell types(memory B cells and memory-activated CD4^(+)T cells)predicted levels of lesions in degenerative cervical myelopathy with 80%*** results suggest that peripheral blood RNA biomarkers could be used to predict lesion severity in degenerative cervical myelopathy.

关键词： biomarkers candidate genes degenerative cervical myelopathy gene expression analysis immune cell types neurological disabilities peripheral blood RNA profiles spinal cord injury

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脱卤亚磺化研究——四氯化碳及1,1,1-三氯多氟烷烃的脱氯亚磺化反应

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化学学报 1984年第10期42卷 1114-1115页

作者：黄维垣黄炳南陈俭龙中国科学院上海有机化学研究所

全氟碘代烷及溴代烷与连二亚硫酸钠反应可生成对应的亚磺酸钠,但全氟氯代烷（RFCl）在相同条件下不能发生类似的反应.本文报道某些RCCl3型化合物在相当温和的条件下发生脱氯亚磺化反应,得到α,α-二氯多氟烷基亚磺酸盐（RCCl2SO2Na）的... 详细信息

全氟碘代烷及溴代烷与连二亚硫酸钠反应可生成对应的亚磺酸钠,但全氟氯代烷（RFCl）在相同条件下不能发生类似的反应.本文报道某些RCCl3型化合物在相当温和的条件下发生脱氯亚磺化反应,得到α,α-二氯多氟烷基亚磺酸盐（RCCl2SO2Na）的研究结果. 在水和乙腈的共溶剂反应体系中,四氯化碳（1a）和氟氯烷1b～1f均可在25℃下与连二亚硫酸钠-碳酸氢钠反应,生成相应的亚磺酸钠盐2a～2f,产率可达80％以上.这些亚磺酸盐与氯气反应均可转化为对应的磺酰氯3a～3f,产率75～90％.

关键词：磺化反应氟烷烃化合物脱氯脱气四氯化碳氯代烃

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Toll-Like Receptor-Dependent Antiviral Responses at the Maternal-Fetal Interface

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Reproductive and Developmental Medicine 2020年第4期4卷 249-256页

作者： Liu Xiao-Rui Wei Xiao-Wei Lin Yi Department of Obstetrics and Gynecology Shanghai Key Laboratory of Embryo Original DiseasesSchool of MedicineInternational Peace Maternity and Child Health HospitalShanghai Jiao Tong UniversityShanghai 200030China

The maternal-fetal interface is a key barrier to protect the fetus from ***-like receptors (TLRs) at the maternal-fetal interface are involved in antiviral *** are expressed in both maternal decidua and fetal ***-induced activation of TLR signaling pathways triggers the release of interferon-related antiviral molecules and other inflammatory cytokines and/or chemokines by the host innate immune system,which may disrupt immune tolerance at the maternal-fetal interface and lead to pregnancy *** this review,we summarize the state of knowledge on the most common viral infections during pregnancy,antiviral TLR responses at the maternal-fetal interface,and TLR-associated pregnancy complications.

关键词： Toll-Like Receptor Antiviral Response Maternal-Fetal Interface

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Hypoxia-preconditioned bone marrow-derived mesenchymal stem cells protect neurons from cardiac arrest-induced pyroptosis

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Neural Regeneration Research 2025年第4期20卷 1103-1123页

作者： Xiahong Tang nan Zheng Qingming Lin Yan You Zheng Gong Yangping Zhuang Jiali Wu Yu Wang Hanlin Huang Jun Ke Feng chen Shengli Clinical Medical College of Fujian Medical University Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Emergency Fujian Provincial HospitalFuzhouFujian ProvinceChina Fujian Provincial Key Laboratory of Emergency Medicine FuzhouFujian ProvinceChina The Second Department of Intensive Care Unit Fujian Provincial Hospital South BranchFuzhouFujian ProvinceChina

Cardiac arrest can lead to severe neurological impairment as a result of inflammation,mitochondrial dysfunction,and post-cardiopulmonary resuscitation neurological *** preconditioning has been shown to improve migration and survival of bone marrow–derived mesenchymal stem cells and reduce pyroptosis after cardiac arrest,but the specific mechanisms by which hypoxia-preconditioned bone marrow–derived mesenchymal stem cells protect against brain injury after cardiac arrest are *** this end,we established an in vitro co-culture model of bone marrow–derived mesenchymal stem cells and oxygen–glucose deprived primary neurons and found that hypoxic preconditioning enhanced the protective effect of bone marrow stromal stem cells against neuronal pyroptosis,possibly through inhibition of the MAPK and nuclear factor κB ***,we transplanted hypoxia-preconditioned bone marrow–derived mesenchymal stem cells into the lateral ventricle after the return of spontaneous circulation in an 8-minute cardiac arrest rat model induced by *** results showed that hypoxia-preconditioned bone marrow–derived mesenchymal stem cells significantly reduced cardiac arrest–induced neuronal pyroptosis,oxidative stress,and mitochondrial damage,whereas knockdown of the liver isoform of phosphofructokinase in bone marrow–derived mesenchymal stem cells inhibited these *** conclude,hypoxia-preconditioned bone marrow–derived mesenchymal stem cells offer a promising therapeutic approach for neuronal injury following cardiac arrest,and their beneficial effects are potentially associated with increased expression of the liver isoform of phosphofructokinase following hypoxic preconditioning.

关键词： bone marrow–derived mesenchymal stem cells cardiac arrest cardiac resuscitation hypoxic preconditioning liver isoform of phosphofructokinase mitochondria neuroinflammation oxidative stress pyroptosis reactive oxygen species

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Lung-targeted polyzwitterionic lipid nanoparticles for effective treatment of lung inflammation

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Science China Chemistry 2025年

作者： Wen Zhang Jiaxin Li nan Wang Muzi Li chen Peng Xinyue Zhang Guanghui Ouyang Yan Li Beijing Key Laboratory for Bioengineering and Sensing Technology School of Chemistry and Biological Engineering University of Science and Technology Beijing CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences

Lipid nanoparticles (LNPs) are non-viral nucleic acid delivery systems that show great potential in vaccine development and disease treatment. Although LNPs are particularly advantageous for in vivo delivery, the wide application of LNPs is impeded as their systemic delivery of nucleic acid drugs to extrahepatic tissues remains highly challenging. To address this issue, we developed lung-targeted polyzwitterionic LNPs with zwitterionic polymer poly(2-methyacryloyloxyethyl phosphorylcholine)(PMPC) modified 1,2-dimyristoyl-sn-glycerol lipid for the delivery of small interfering RNA (siRNA). Three libraries with 90PMPC-LNPs@siRNA were established. The polyzwitterionic PMPC-LNPs had high siRNA encapsulation efficiency of about90%. The findings revealed that polyzwitterionic PMPC-LNPs@siRNA absorbed protein corona with the main component of Vitronectin, mediating lung-targeted delivery of siRNA. With good cellular uptake and endo/lysosomal escape ability, in vitro and in vivo studies demonstrated that polyzwitterionic PMPC-LNPs with siRNA against tumor necrosis factor-α (TNF-α) could significantly down-regulate the TNF-α in mRNA and protein levels, and improved the pathological features of lung inflammation. Polyzwitterionic PMPC-LNPs@siRNA achieved safe and efficient treatment of lung inflammation. Therefore, this work offered a promising siRNA therapeutic approach for lung diseases.

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Surface-confined persistent luminescence with amplified FRET efficiency for cell-cell communication monitoring

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Science China Chemistry 2025年

作者： Ziyun Miao Wenjing Dai Yubin Jin bing Qi Jiayi chen Lingling Qiu Yurong Wei Jie Wang The Key Lab of Health Chemistry&Molecular Diagnosis of Suzhou College of ChemistryChemical Engineering&Materials ScienceSoochow University

Microbial communication monitoring is vital for understanding the mechanisms beneath gut microbiota equilibrium, infections,and biomanufacturing. Herein, we reported monitoring bacterial communication by surface-confined persistent ***, we constructed core-shell structured Zn1.4Ga1.2Ge0.4O4@Zn1.4Ga1.2Ge0.4O4:Cr（ZGGO@ZGGO:Cr） persistent luminescence nanoparticles（PLNPs） with amplified FRET efficiency for the detection of azoreductase（AzoR） that participates in bacterial communication. ZGGO@ZGGO:Cr nanoparticles were functionalized with an azo black hole quencher（ZGGO@ZGGO:Cr-BHQ-3）. Due to the proximity of surface-confined persistent luminescence with the surface-bound BHQ-3,ZGGO@ZGGO:Cr-BHQ-3 exhibited a FRET efficiency up to 1.6 times that of traditional ZGGO:Cr-BHQ-3. Further, the specific catalytic reduction of azo bonds in BHQ-3 by bacterial extracellular AzoR recovers the persistent luminescence of ZGGO@ZGGO:Cr. ZGGO@ZGGO:Cr-BHQ-3 displayed superior sensitivity and speed in detecting extracellular AzoR over ZGGO:Cr-BHQ-3, attributed to its surface-confined persistent luminescence. We found that the peak secretion of AzoR occurs during the exponential growth period of bacteria including S. aureus and E. coli based on the persistent luminescence recovery rate of ZGGO@ZGGO:Cr-BHQ-3. Furthermore, ZGGO@ZGGO:Cr-BHQ-3 was used to probe the communication between different bacterial species. R. palustris is a kind of lycopene-production bacteria. We found that the cohabitation of R. palustris and S. putrefaciens boosted both AzoR secretion and lycopene production. Moreover, the secretion and activity of AzoR positively correlated with lycopene production, suggesting that AzoR may participate in the communication between R. palustris and S. putrefaciens to promote lycopene production. This study offers a robust method to enhance PLNP-based biosensing sensitivity and provides a promising strategy for microbial communication monitoring.

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Insufficient MIRO1 contributes to declined oocyte quality during reproductive aging

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Science China Life Sciences 2025年

作者： Zhen-nan Pan Hao-Lin Zhang Kun-Huan Zhang Jia-Qian Ju Jing-Cai Liu Shao-chen Sun College of Animal Science and Technology Nanjing Agricultural University Reproductive Medicine Centre The Affiliated Yantai Yuhuangding Hospital of Qingdao University

Mitochondrial Rho-GTPase 1 (MIRO1) is an outer mitochondrial membrane protein which regulates mitochondrial transport and mitophagy in mitosis. In present study, we reported the crucial roles of MIRO1 in mammalian oocyte meiosis and its potential relationship with aging. We found that MIRO1 expressed in mouse and porcine oocytes, and its expression decreased in aged mice. MIRO1 deficiency caused the failure of meiotic resumption and polar body extrusion in both mouse and porcine oocytes, which could be rescued by exogenous MIRO1supplementation. Mass spectrometry data indicated that MIRO1 associated with several cytoskeleton and cell cycle-related proteins, and MIRO1 regulated motor protein Dynein for microtubule-organizing centers (MTOCs) dynamics at germinal vesicle (GV) stage, which determined meiotic resumption. Furthermore, we found that MIRO1 regulated Aurora A and kinesin family member 11 (KIF11) for meiotic spindle assembly in oocytes. Besides, MIRO1 associated with several mitochondria-related proteins dynamic-related protein 1 (DRP1),Parkin and lysosomal-associated membrane protein 2 (LAMP2) for mitochondrial dynamics and mitophagy during oocyte meiosis. Taken together, our results suggested that MIRO1 played pivotal roles in meiotic resumption, spindle assembly and mitochondrial function in mouse and porcine oocytes, and its insufficiency might contribute to the oocyte maturation defects during aging.

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