|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Osteoporosis in diabetes mellitus: Possible cellular and molecular mechanisms显示文摘Osteoporosis,a global age-related health problem in both male and female elderly,insidiously deteriorates the microstructure of bone,particularly at trabecular sites,such as vertebrae,ribs and hips,culminating in fragility fractures,pain and disability.Although osteoporosis is normally associated with senescence and estrogen deficiency,diabetes mellitus(DM),especially type 1 DM,also contributes to and/or aggravates bone loss in osteoporotic patients.This topic highlight article focuses on DM-induced osteoporosis and DM/ osteoporosis comorbidity,covering alterations in bone metabolism as well as factors regulating bone growth under diabetic conditions including,insulin,insulin-like growth factor-1 and angiogenesis.Cellular and molecular mechanisms of DM-related bone loss are also discussed.This information provides a foundation for the better understanding of diabetic complications and for development of early screening and prevention of osteoporosis in diabetic patients. | Kannikar Wongdee Narattaphol Charoenphandhu | 2011 | World Journal of Diabetes2011，2，3： | 51 |
| 2 | Cardiac remodeling and physical training post myocardial infarction显示文摘After myocardial infarction(MI), the heart undergoes extensive myocardial remodeling through the accumulation of fibrous tissue in both the infarcted and noninfarcted myocardium, which distorts tissue structure, increases tissue stiffness, and accounts for ventricular dysfunction. There is growing clinical consensus that exercise training may beneficially alter the course of post-MI myocardial remodeling and improve cardiac function. This review summarizes the present state of knowledge regarding the effect of post-MI exercise training on infarcted hearts. Due to the degree of difficulty to study a viable human heart at both protein and molecular levels, most of the detailed studies have been performed by using animal models. Although there are some negative reports indicating that post-MI exercise may further cause deterioration of the wounded hearts, a growing body of research from both human and animal experiments demonstrates that post-MI exercise may beneficially alter the course of wound healing and improve cardiac function. Furthermore, the improved function is likely due to exercise training-induced mitigation of reninangiotensin-aldosterone system, improved balance between matrix metalloproteinase-1 and tissue inhibitor of matrix metalloproteinase-1, favorable myosin heavy chain isoform switch, diminished oxidative stress, enhanced antioxidant capacity, improved mitochondrial calcium handling, and boosted myocardial angiogenesis. Additionally, meta-analyses revealed that exercise-based cardiac rehabilitation has proven to be effective, and remains one of the least expensive therapies for both the prevention and treatment of cardiovascular disease, and prevents re-infarction. | Michael A Garza Emily A Wason John Q Zhang | 2015 | World Journal of Cardiology2015，7，2： | 28 |
| 3 | Repeated measurement of growth-differentiation factor-15in Chinese Han patients with post-myocardial infarction chronic heart failure显示文摘Background Growth-differentiation factor-15(GDF-15)is a promising prognostic biomarker in patients with chronic heart failure (CHF).Comparatively little is known about the value of repeated measurement of GDF-15with CI-IF in Chinese Han population.This study sought to identify the clinical value of repeated measurement of GDF-15in Chinese Han patients with post-myocardial infarction CHF. Methods In total,232consecutive Chinese Hart patients with post-myocardial infarction CHF were enrolled prospectively from January 2014to June 2016.The plasma concentration of GDF-15was determined on admission and over 12months.Patients were followed up for all-cause death and a composite outcome of major adverse cardiac events (MACE)included all-cause death,myocardial infarction and first heart failure (HF)re-hospitalization.Association with other clinical variables and adverse outcomes of repeated measurement of GDF-15 was explored.Results The median baseline GDF-15level was 2025ng/L.Baseline GDF-15was moderately associated with baseline N-terminal pro-B type nalriuretic peptide (NT-proBNP)(coefficient 0.561,P <0.001).During a median follow-up of 20months,there were 53deaths and 100MACE.GDF-I5remained an independent predictor of all-cause death (adjusted hazard ratio 1.826per 1Ln U,95%CI: 1.037-8.360;P =0.037)and MACE (adjusted hazard ratio 2.243per I Ln U,95%CI:1.181-1.775;P <0.001)adjusted for established risk factors.Repeated measurement of GDF-15was performed in 173survivals over 12months.Increase of GDF-15over 12months was associ- ated with dilatation of left ventricle and acted as an independent predictor of subsequent all-canse death (adjusted HR =3.164,95%CI: 1.245~.041;P =0.015).In the joint model,GDF-15was also shown to be a risk factor for all-cause death (HR =2.749,95%CI: 1.667-3.831;P <0.001)and MACE (FIR =2.434,95%CI:1.425-3.443;P <0.001).Conclusions Repeated measurements of GDF-15 have promising prognostic value of the risk of all-cause death in Chinese Han patients with CI-IF post-myocardial infarction.GDF-15may influence the post-myocardial infarction CI-IF through the path physiological pathway of myocardial remodeling. | Ji-Xuan LIU Yan-Ping LI Bo-Han LIU Xiao-Jing ZHAO Ze-Yu ZHANG Jin-Da WANG Qian JIA Chun-Lei LIU Xiao-Jian GAO Zhen-Guo XU Hua-Wei ZHANG Lin-Nan SONG Zhi-Jun SUN Kun-Lun HE | 2018 | Journal of Geriatric Cardiology2018，15，10： | 19 |
| 4 | Xinfuli Granule improves post-myocardial infarction ventricular remodelingand myocardial fibrosis in rats by regulating TGF-β/Smads signaling pathway显示文摘Background Recent clinical and experimental studies have confirmed the effects of Xinfuli Granule (XG), a compound Chinesemedicine in the prevention and treatment of heart failure (HF). This study aimed to investigate the effects and the mechanisms of XG onventricular reconstruction in rats with acute myocardial infarction (AMI). Methods Sprague-Dawley rats were subjected to left anteriordescending branch ligation. The rats that survived 24 h were randomly assigned to five groups: medium-dose of XG group (MI+XGM),high-dose of XG group (MI+XGH), carvedilol group (MI+C), medium-dose of XG + carvedilol group (MI+C+XGM). Fourteen rats under-went identical surgical procedures without artery ligation, serving as sham controls. At 28 days, left ventricular weight to body weight(LVW/BW) and heart weight to body weight (HW/BW) were calculated; left ventricular ejection fraction (LVEF), left ventricular shorteningfraction (LVFS), left ventricular internal diameter at systole (LVIDS) were measured by ultrasound; HE staining, Masson staining, and Siriusred staining were used to assess the myocardial pathological and physiological changes as well as myocardial fibrosis area and non-infarctzone Ⅰ/Ⅲ collagen ratio. Expression of Smad3 were detected and analyzed by Western blot, immunohistochemistry and immunofluorescenceP-Smad3, Smad2 and Smad7 in the TGF-13/Smads signaling pathway were also analyzed by Western blot. Results The LVIDS (P 〈 0.01),HW/BW (P 〈 0.05), type UIII collagen ratio (P 〈 0.01) and myocardial collagen (P 〈 0.01) decreased significantly while the LVW/BW,LVFS (P 〈 0.05) increased significantly in MI+XGM group as compared with those in other groups. The expression of key signal moleculesof the TGF-β/Smads signaling pathway, including Smad3, P-Smad3 and Smad2 protein were decreased, while the expression of Smad7 in-creased in both XG and carvedilol treatment groups as compared to those of the MI group (all P 〈 0.01). Immunohistochemistry and im-munofluorescence further confirmed the down-regulated Smad3 expression. Conclusion XG can improve ventricular reconstruction andinhibit myocardial fibrosis in rats with AMI by regulating TGF-β/Smads signaling pathway. | Jie MA Zhi-Yuan LI Xiao-Peng LIANG Cai-Xia GUO Pei-Pei LU Li-Hong MA | 2017 | Journal of Geriatric Cardiology2017，14，5： | 19 |
| 5 | 微小RNA-1和微小RNA-29b对急性心肌梗死后不良心室重塑的诊断和预后价值显示文摘已知微小RNA(microRNAs,miRs)在急性心肌梗死(acute myocardial infarction,AMI)临床前期模型中可发挥纤维化和抗纤维化作用。为了评估miR-1,miR-21,miR-29b和miR-92a能否作为患者发生AMI后不良心室重塑(adverse ventricular remodeling,AVR)的循环生物标志物, | 刘莉 叶鹏 Grabmaier U Clauss S Gross L Klier I Franz WM Steinbeck G Wakili R Theiss HD Brenner C | 2017 | 中华高血压杂志2017，25，7： | 17 |
| 6 | Linggui Zhugan Decoction(苓桂术甘汤)Inhibits Ventricular Remodeling after Acute Myocardial Infarction in Mice by Suppressing TGF-β1 Smad Signaling Pathway显示文摘Objective:To investigate the inhibitory effect of Linggui Zhugan Decoction(LZD,苓桂术甘汤)on the ventricular remodeling(VR)after acute myocardial infarction(AMI)and related mRNA and proteins expression in transforming growth factor-beta 1(TGF-β1)/Smad signaling pathway,and explain its putative mechanism.Methods:A VR model was generated by ligation of coronary artery in mice.Two weeks after surgery,60 mice were randomly divided into the model group,the sham-operation group(distilled water),the positive control group(2.4 mg/kg simvastatin),and the low-,medium-and high-dose LZD groups(2.1,4.2,8.4 g crude drug/kg,respectively)by a random number table,10 mice in each group.Mice in each group was treated for 4 weeks.Changes of hemodynamics indices and cardiac weight index were detected by the PowerLab data acquisition and analysis recording instrument.Morphology changes of myocardial tissue were observed by hematoxylin-eosin and Masson staining.The expressions of TGF-β1,Smad2,Smad3,p-Smad2 and p-Smad3 in myocardial tissue were detected by Western blotting.The mRNA expressions of TGF-β1,Smad2 and Smad3 were detected by reverse transcription-quantitative polymerase chain reaction(RT-qPCR).The expressions of matrix metalloprotein 2(MMP2),MMP9,collagenⅠand collagen Ⅲ were observed by immunohistochemical methods.Results:VR mice showed significant dysfunction in hemodynamic indices and cardiac structure and function.Compared with the shamoperation group,myocardial tissue damage,interstitial fibrosis occurred in the model mice,left ventricular systolic pressure(LVSP),left ventricular pressure maximum contraction rate(+dp/dtmax)and left ventricular pressure maximum relaxation rate(-dp/dtmax)decreased significantly(all P<0.01),while left ventricular end-diastolic pressure(LVEDP),cardiac weight index and left ventricular weight index elevated significantly,meanwhile TGF-β1,p-Smad2,p-Smad3,Smad2,Smad3,MMP2,MMP9,collagen Ⅰ,collagen Ⅲ protein expressions in myocardial tissue and TGF-β1 Smad2 and Smad3 mRNA expressions increased significantly(all P<0.01).Compared with the model group,LZD could significantly improve the pathological changes of myocardial tissue,increase LVSP,+dp/dtmax and-dp/dtmaxf lower LVEDP,reduce the whole heart weight index and left ventricular weight index and inhibit the over-expressions of TGF-β1f p-Smad2,p-Smad3,Smad2,Smad3,MMP2,MMP9,collagenⅠand collagenⅢproteins in myocardial tissue and mRNA expressions of TGF-β1 Smad2 and Smad3(P<0.05 or P<0.01).Conclusion:LZD can significantly suppress VR induced by AMI,and its underlying mechanism may be associated with its inhibitory effect on the TGF-β1/Smad signaling pathway. | WANG Liang SHI Hui HUANG Jin-ling XU Shan LIU Pei-pei | 2020 | Chinese Journal of Integrative Medicine2020，26，5： | 15 |
| 7 | Retrospective and perspective of plant epigenetics in China显示文摘Epigenetics refers to the study of heritable changes in gene function that do not involve changes in the DNA sequence. Such effects on cellular and physiological phenotypic traits may result from external or environmental factors or be part of normal developmental program. In eukaryotes, DNA wraps on a histone octamer(two copies of H2A, H2B, H3 and H4) to form nucleosome, the fundamental unit of chromatin. The structure of chromatin is subjected to a dynamic regulation through multiple epigenetic mechanisms, including DNA methylation, histone posttranslational modifications(PTMs), chromatin remodeling and noncoding RNAs. As conserved regulatory mechanisms in gene expression, epigenetic mechanisms participate in almost all the important biological processes ranging from basal development to environmental response. Importantly, all of the major epigenetic mechanisms in mammalians also occur in plants. Plant studies have provided numerous important contributions to the epigenetic research. For example, gene imprinting, a mechanism of parental allele-specific gene expression, was firstly observed in maize; evidence of paramutation, an epigenetic phenomenon that one allele acts in a single locus to induce a heritable change in the other allele, was firstly reported in maize and tomato.Moreover, some unique epigenetic mechanisms have been evolved in plants. For example, the 24-nt siRNA-involved RNA-directed DNA methylation(RdDM) pathway is plant-specific because of the involvements of two plant-specific DNA-dependent RNA polymerases, Pol IV and Pol V. A thorough study of epigenetic mechanisms is of great significance to improve crop agronomic traits and environmental adaptability. In this review, we make a brief summary of important progress achieved in plant epigenetics field in China over the past several decades and give a brief outlook on future research prospects.We focus our review on DNA methylation and histone PTMs, the two most important aspects of epigenetic mechanisms. | Cheng-Guo Duan Jian-Kang Zhu Xiaofeng Cao | 2018 | Journal of Genetics and Genomics2018，45，11： | 14 |
| 8 | Effect of prenatal tetrandrine therapy on pulmonary vascular structural remodeling in the nitrofen-induced CDH rat model显示文摘To examine the effects of prenatal tetrandrine (Tet) therapy on pulmonary arterial structural remodeling in nitrofen-induced congenital diaphragmatic hernia (CDH) Methods CDH was induced in fetal rats by maternal administration of 100*!mg nitrofen by gavage on day 9 5 of gestation (term, day 22) Control animals received olive oil (OO) Tet (24*!mg/kg per day) or normal saline (NS) was given by gavage every day from 16 to 20 days of gestation, and fetuses were delivered by caesarean section on day 21 5 Lung sections from 3 fetuses in each group were studied The number of vessels were calculated, the external diameter (ED), medial wall thickness (MT), percent of medial wall thickness, and wall structure were evaluated by image analysis software Results In the pre-acinar arteries, CDH-NS pups had a significantly increased %MT compared with the OO-NS group ( P <0 05), while CDH-Tet animals had a reduced %MT compared with the CDH-NS rats ( P <0 05) Similar results were seen in the intra-acinar level Significant differences were observed between CDH-NS animals and OO-NS controls in the percentage of muscularized intra-acinar blood vessels ( P <0 001) Tet-treated CDH pups had a reduced percentage of muscularized intra-acinar arteries compared with CDH-NS animals Conclusions Medial hypertrophy is present in both the pre-acinar and intra-acinar arteries in the nitrofen-induced CDH rat model Tet treatment inhibits medial hypertrophy and reduces the percentage of muscularized intra-acinar vessels Prenatal Tet therapy may be efficacious in reducing the risk of PH in human newborns with | 刘文英 冯杰雄 贾红慧 唐耘熳 胡廷泽 蒋小平 胡显良 | 2000 | Chinese Medical Journal2000，，9： | 14 |
| 9 | Stem cell mechanisms during left ventricular remodeling post-myocardial infarction:Repair and regeneration显示文摘Post-myocardial infarction(MI),the left ventricle(LV)undergoes a series of events collectively referred to as remodeling.As a result,damaged myocardium is replaced with fibrotic tissue consequently leading to contractile dysfunction and ultimately heart failure.LV remodeling post-MI includes inflammatory,fibrotic,and neovascularization responses that involve regulated cell recruitment and function.Stem cells(SCs)have been transplanted post-MI for treatment of LV remodeling and shown to improve LV function by reduction in scar tissue formation in humans and animal models of MI.The promising results obtained from the application of SCs post-MI have sparked a massive effort to identify the optimal SC for regeneration of cardiomyocytes and the paradigm for clinical applications.Although SC transplantations are generally associated with new tissue formation,SCs also secrete cytokines,chemokines and growth factors that robustly regulate cell behavior in a paracrine fashion during the remodeling process.In this review,the different types of SCs used for cardiomyogenesis,markers of differentiation,paracrine factor secretion,and strategies for cell recruitment and delivery are addressed. | Rogelio Zamilpa Mary M Navarro Iris Flores Sy Griffey | 2014 | World Journal of Cardiology2014，6，7： | 11 |
| 10 | A Regulatory Module Controlling CA-Mediated Endosperm Cell Expansion Is Critical for Seed Germination in Arabidopsis显示文摘A key component of seed germination is the interplay of mechanical forces governing embryo growth and the surrounding restraining endosperm tissue.Endosperm cell separation is therefore thought to play a critical role in the control of this developmental transition.Here we demonstrate that in Arabidopsis thaliana seeds,endosperm cell expansion is a key component of germination.Endosperm cells expand to accommodate embryo growth prior to germination.We show that this is an actively regulated process supported by spatiotemporal control of the cell expansion gene EXPANSIN 2 (EXPA2).The NAC transcription factors NAC25 and NACIL were identified as upstream regulators of EXPA2 expression,gibbereliinmediated endosperm expansion,and seed germination.The DELLA protein RGL2 repressed activation of the EXPA2 promoter by NAC25/NACIL.Taken together,our findings uncover a key role of the GA/ DELLA-NAC25/NACIL-EXPA2 network in regulating endosperm cell expansion to control the seed-toseedling transition. | Rocio Sanchez-Montesino Laura Bouza-Morcillo Julietta Marquez Melania Ghita Salva Duran-Nebreda Luis Gomez Michael J.Holdsworth George Bassel Luis Onate-Sanchez | 2019 | Molecular Plant2019，12，1： | 11 |
| 11 | Mechanisms of adaptation of the hepatic vasculature to the deteriorating conditions of blood circulation in liver cirrhosis显示文摘Pub Med, EMBASE, Orphanet, MIDLINE, Google Scholar and Cochrane Library were searched for articles published between 1983 and 2015. Relevant articles were selected by using the following terms: 'Liver cirrhosis', 'Endothelial dysfunction', 'Sinusoidal remodeling', 'Intrahepatic angiogenesis' and 'Pathogenesis of portal hypertension'. Then the reference lists of identified articles were searched for other relevant publications as well. Besides gross hepatic structural disorders related to diffuse fibrosis and formation of regenerative nodules, the complex morphofunctional rearrangement of the hepatic microvascular bed and intrahepatic angiogenesis also play important roles in hemodynamic disturbances in liver cirrhosis. It is characterized by endothelial dysfunction and impaired paracrine interaction between activated stellate hepatocytes and sinusoidal endotheliocytes, sinusoidal remodeling and capillarization, as well as development of the collateral microcirculation. In spite of the fact that complex morphofunctional rearrangement of the hepatic microvascular bed and intrahepatic angiogenesis in liver cirrhosis are the compensatory-adaptive reaction to the deteriorating conditions of blood circulation, they contribute to progression of disease and development of serious complications, in particular, related to portal hypertension.Pub Med,EMBASE,Orphanet,MIDLINE,Google Scholar and Cochrane Library were searched for articles published between 1983 and 2015.Relevant articles were selected by using the following terms:'Liver cirrhosis','Endothelial dysfunction','Sinusoidal remodeling','Intrahepatic angiogenesis'and'Pathogenesis of portal hypertension'.Then the reference lists of identified articles were searched for other relevant publications as well.Besides gross hepatic structural disorders related to diffuse fibrosis and formation of regenerative nodules,the complex morphofunctional rearrangement of the hepatic microvascular bed and intrahepatic angiogenesis also play important roles in hemodynamic disturbances in liver cirrhosis.It is characterized by endothelial dysfunction and impaired paracrine interaction between activated stellate hepatocytes and sinusoidal endotheliocytes,sinusoidal remodeling and capillarization,as well as development of the collateral microcirculation.In spite of the fact that complex morphofunctional rearrangement of the hepatic microvascular bed and intrahepatic angiogenesis in liver cirrhosis are the compensatory-adaptive reaction to the deteriorating conditions of blood circulation,they contribute to progression of disease and development of serious complications,in particular,related to portal hypertension. | Dmitry Victorovich Garbuzenko Nikolay Olegovich Arefyev Dmitry Vladimirovich Belov | 2016 | World Journal of Hepatology2016，8，16： | 11 |
| 12 | Rehabilitation following spinal cord injury:how animal models can help our understanding of exercise-induced neuroplasticity显示文摘Spinal cord injury is a devastating condition that is followed by long and often unsuccessful recovery after trauma. The state of the art approach to manage paralysis and concomitant impairments is rehabilitation, which is the only strategy that has proven to be effective and beneficial for the patients over the last decades. How rehabilitation influences the remodeling of spinal axonal connections in patients is important to understand, in order to better target these changes and define the optimal timing and onset of training. While clinically the answers to these questions remain difficult to obtain, rodent models of rehabilitation like bicycling, treadmill training, swimming, enriched environments or wheel running that mimic clinical rehabilitation can be helpful to reveal the axonal changes underlying motor recovery. This review will focus on the different animal models of spinal cord injury rehabilitation and the underlying changes in neuronal networks that are improved by exercise and rehabilitation. | Kristina Loy Florence M.Bareyre | 2019 | Neural Regeneration Research2019，14，3： | 11 |
| 13 | Abnormal subchondral bone remodeling and its association with articular cartilage degradation in knees of type 2 diabetes patients显示文摘Type 2 diabetes(T2 D) is associated with systemic abnormal bone remodeling and bone loss. Meanwhile,abnormal subchondral bone remodeling induces cartilage degradation, resulting in osteoarthritis(OA).Accordingly, we investigated alterations in subchondral bone remodeling, microstructure and strength in knees from T2 D patients and their association with cartilage degradation. Tibial plateaus were collected from knee OA patients undergoing total knee arthroplasty and divided into non-diabetic(n = 70) and diabetes(n = 51) groups. Tibial plateaus were also collected from cadaver donors(n = 20) and used as controls.Subchondral bone microstructure was assessed using micro-computed tomography. Bone strength was evaluated by micro-finite-element analysis. Cartilage degradation was estimated using histology. The expression of tartrate-resistant acidic phosphatase(TRAP), osterix, and osteocalcin were calculated using immunohistochemistry. Osteoarthritis Research Society International(OARSI) scores of lateral tibial plateau did not differ between non-diabetic and diabetes groups, while higher OARSI scores on medial side were detected in diabetes group. Lower bone volume fraction and trabecular number and higher structure model index were found on both sides in diabetes group. These microstructural alterations translated into lower elastic modulus in diabetes group. Moreover, diabetes group had a larger number of TRAP^+ osteoclasts and lower number of Osterix^+ osteoprogenitors and Osteocalcin^+ osteoblasts. T2 D knees are characterized by abnormal subchondral bone remodeling and microstructural and mechanical impairments, which were associated with exacerbated cartilage degradation. In regions with intact cartilage the underlying bone still had abnormal remodeling in diabetes group, suggesting that abnormal bone remodeling may contribute to the early pathogenesis of T2 D-associated knee OA. | Yan Chen Yong-Can Huang Chun Hoi Yan Kwong Yuen Chiu Qingjun Wei Jingmin Zhao X Edward Guo Frankie Leung William W Lu | 2017 | Bone Research2017，5，4： | 10 |
| 14 | Adipose tissue lipolysis and remodeling during the transition period of dairy cows显示文摘Elevated concentrations of plasma fatty acids in transition dairy cows are significantly associated with increased disease susceptibility and poor lactation performance. The main source of plasma fatty acids throughout the transition period is lipolysis from adipose tissue depots. During this time, plasma fatty acids serve as a source of calories mitigating the negative energy balance prompted by copious milk synthesis and limited dry matter intake.Past research has demonstrated that lipolysis in the adipose organ is a complex process that includes not only the activation of lipolytic pathways in response to neural, hormonal, or paracrine stimuli, but also important changes in the structure and cellular distribution of the tissue in a process known as adipose tissue remodeling. This process involves an inflammatory response with immune cell migration, proliferation of the cellular components of the stromal vascular fraction, and changes in the extracellular matrix. This review summarizes current knowledge on lipolysis in dairy cattle, expands on the new field of adipose tissue remodeling, and discusses how these biological processes affect transition cow health and productivity. | G.Andres Contreras Clarissa Strieder-Barboza William Raphael | 2017 | Journal of Animal Science and Biotechnology2017，8，4： | 8 |
| 15 | Reversible Histone H2B Monoubiquitination Fine-Tunes Abscisic Acid Signaling and Drought Response in Rice显示文摘Histone H2B monoubiquitination (H2Bub1) plays important roles in several physiological and developmental processes, but its roles in the regulation of plant stress responses remain elusive. Here, we report that H2Bub1 is crucially involved in abscisic acid (ABA) signaling and drought response in rice. We found that rice HISTONE MONOUBIQUITINATION2 (OsHUB2), an E3 ligase for H2Bub1, in teracted with OsbZIP46, a key transcription factor regulating ABA signaling and drought response in rice. Genetic analyses suggest that OsHUB2, upregulated by drought and ABA, positively modulates ABA sensitivity and drought resistance. The H2Bub1 levels were in creased in the target genes of OsbZIP46 under the drought stress and ABA treat- merits, which were positively correlated with their increased expression levels. Interestingly, MODD, a reported suppressor of ABA signaling and drought resistance by mediating OsbZIP46 deactivation and degradation, could reduce the H2Bub1 levels in the target genes of OsbZIP46 by recruiting a putative deubiquitinase OsOTLD1 . Suppression of OsOTLD1in vivo resulted in increased H2Bub1 levels and expression of OsbZIP46 target genes. Collectively, these fin dings established an elaborate mecha nism of histone monoubiquitination in the fine-turning of ABA signaling and drought response by balancing H2Bub1 deposition and removal. | Siqi Ma Ning Tang Xu Li Yongjun Xie Denghao Xiang Jie Fu Jianqiang Shen Jun Yang Haifu Tu Xianghua Li Honghong Hu Lizhong Xiong | 2019 | Molecular Plant2019，12，2： | 7 |
| 16 | Circulating extracellular RNAs,myocardial remodeling,and heart failure in patients with acute coronary syndrome显示文摘Background:Given high on-treatment mortality in heart failure(HF),identifying molecular pathways that underlie adverse cardiac remodeling may offer novel biomarkers and therapeutic avenues.Circulating extracellular RNAs(ex-RNAs)regulate important biological processes and are emerging as biomarkers of disease,but less is known about their role in the acute setting,particularly in the setting of HF.Methods:We examined the ex-RNA profiles of 296 acute coronary syndrome(ACS)survivors enrolled in the Transitions,Risks,and Actions in Coronary Events Center for Outcomes Research and Education Cohort.We measured 374 ex-RNAs selected a priori,based on previous findings from a large population study.We employed a two-step,mechanism-driven approach to identify ex-RNAs associated with echocardiographic phenotypes(left ventricular[LV]ejection fraction,LV mass,LV end-diastolic volume,left atrial[LA]dimension,and LA volume index)then tested relations of these ex-RNAs with prevalent HF(N=31,10.5%).We performed further bioinformatics analysis of microRNA(miRNAs)predicted targets’genes ontology categories and molecular pathways.Results:We identified 44 ex-RNAs associated with at least one echocardiographic phenotype associated with HF.Of these 44 exRNAs,miR-29-3p,miR-584-5p,and miR-1247-5p were also associated with prevalent HF.The three microRNAs were implicated in the regulation p53 and transforming growth factor-βsignaling pathways and predicted to be involved in cardiac fibrosis and cell death;miRNA predicted targets were enriched in gene ontology categories including several involving the extracellular matrix and cellular differentiation.Conclusions:Among ACS survivors,we observed that miR-29-3p,miR-584-5p,and miR-1247-5p were associated with both echocardiographic markers of cardiac remodeling and prevalent HF.Relevance for Patients:miR-29c-3p,miR-584-5p,and miR-1247-5p were associated with echocardiographic phenotypes and prevalent HF and are potential biomarkers for adverse cardiac remodeling in HF. | Khanh-Van Tran Kahraman Tanriverdi Gerard P.Aurigemma Darleen Lessard Mayank Sardana Matthew Parker Amir Shaikh Matthew Gottbrecht Zachary Milstone Selim Tanriverdi Olga Vitseva John F.Keaney Catarina I.Kiefe David D.McManus Jane E.Freedman | 2019 | Journal of Clinical & Translational Research2019，5，1： | 7 |
| 17 | Role of matricellular proteins in cardiac tissue remodeling after myocardial infarction显示文摘After onset of myocardial infarction(MI),the left ventricle(LV) undergoes a continuum of molecular,cellular,and extracellular responses that result in LV wall thinning,dilatation,and dysfunction.These dynamic changes in LV shape,size,and function are termed cardiac remodeling.If the cardiac healing after MI does not proceed properly,it could lead to cardiac rupture or maladaptive cardiac remodeling,such as further LV dilatation and dysfunction,and ultimately death.Although the precise molecular mechanisms in this cardiac healing process have not been fully elucidated,this process is strictly coordinated by the interaction of cells with their surrounding extracellular matrix(ECM) proteins.The components of ECM include basic structural proteins such as collagen,elastin and specialized proteins such as fibronectin,proteoglycans and matricellular proteins.Matricellular proteins are a class of non-structural and secreted proteins that probably exert regulatory functions through direct binding to cell surface receptors,other matrix proteins,and soluble extracellular factors such as growth factors and cytokines.This small group of proteins,which includesosteopontin,thrombospondin-1/2,tenascin,periostin,and secreted protein,acidic and rich in cysteine,shows a low level of expression in normal adult tissue,but is markedly upregulated during wound healing and tissue remodeling,including MI.In this review,we focus on the regulatory functions of matricellular proteins during cardiac tissue healing and remodeling after MI. | Yutaka Matsui Junko Morimoto Toshimitsu Uede | 2010 | World Journal of Biological Chemistry2010，1，5： | 7 |
| 18 | Arginine vasopressin as a target in the treatment of acute heart failure显示文摘Congestive heart failure(CHF) is one of the most common reasons for hospitalization in the United States. Despite multiple different beneficial medications for the treatment of chronic CHF, there are no therapies with a demonstrated mortality benefit in the treatment of acute decompensated heart failure. In fact, studies of inotropes used in this setting have demonstrated more harm than good. Arginine vasopressin has been shown to be up regulated in CHF. When bound to the V1 a and/or V2 receptors, vasopressin causes vasoconstriction, left ventricular remodeling and free water reabsorption. Recently, two drugs have been approved for use that antagonize these receptors. Studies thus far have indicated that these medications, while effective at aquaresis(free water removal), are safe and not associated with increased morbidity such as renal failure and arrhythmias. Both conivaptan and tolvaptan have been approved for the treatment of euvolemic and hypervolemic hyponatremia. We review the results of these studies in patients with heart failure. | Nisha A Gilotra Stuart D Russell | 2014 | World Journal of Cardiology2014，6，12： | 7 |
| 19 | Effect of chrysanthemum extract on myocardial fibrosis in rats with renovascular hypertension显示文摘OBJECTIVE: To investigate the inhibitory effect of chrysanthemum extract on myocardial fibrosis in rats with renovascular hypertension, and explore the possible mechanism underlying this effect.METHODS: Sixty Wistar rats were randomly divided into six groups: sham operation, model, positive control, and low-, medium-, and high-dose Huai chrysanthemum extract groups(ten rats per group). With the exception of the sham operation group, a renal hypertensive model was established in rats using the 'two-kidney, one clip' method. After 6 weeks, low-, medium-, and high-dose groups were intragastrically administered chrysanthemum extract at 1, 2, or 4 g/kg, respectively, once daily for 4 weeks. The positive control group was administered Kato Pury at 50 mg/kg once daily for 4 weeks,while sham operation and model groups received an equal volume of distilled water once daily for 4 weeks. Blood pressure changes were examined before modeling, 6 weeks after modeling, and after 4 weeks of treatment administration. Ventricular remodeling indexes were measured by high frequency echocardiography after 4 weeks of treatment administration. Pathological changes were observed by hematoxylin and eosin, and Masson’s trichrome staining methods. Collagen type sion were eⅠxa(Col minedⅠ) and type Ⅲ(Col Ⅲ) expres by enzyme-linked immunosorbent assays. Transforming growth factor-β1(TGF-β1), sma mad 3(Smad3),Smad7, Ras homolog gene family, member A(RhoA), and Rho-associated protein kinase 1(ROCK1) protein expression were detected by Western blot.RESULTS: Compared with the model group, chrysanthemum-administered groups and the positive control group showed significant improvement of arterial blood pressure, echocardiography indicators, and degree of myocardial fibrosis(P < 0.05). In addition, these groups exhibited decreased expression of Col Ⅰ, Col Smad3, and increaseⅢ, RhoA, ROCK1, TGF-β1, and d Smad7 expression. Such improvements were most obvious in the high-dose chrysanthemum extract group(P < 0.05).CONCLUSION: Chrysanthemum extract could effectively reduce myocardial fibrosis in rats with renovascular hypertension by a mechanism that potentially involves inhibition of RhoA/ROCK1 and TGF-β1/Smad signaling pathways. | Pei Lixin Shu Shengnan Wang Xuanying Ji Baoyu | 2019 | Journal of Traditional Chinese Medicine2019，39，4： | 6 |
| 20 | Expansive arterial remodeling of carotid arteries in symptomatic ischemic patients显示文摘Purpose: The present study aimed to assess the associations of expansive remodeling of carotid arteries with ischemic symptoms and the degree of stenosis. Materials and Methods: A total of 41 symptomatic patients with vulnerable plaques and 25 asymptomatic individuals with stable plaques were included. All patients underwent 3.0T high-resolution MRI of the carotid artery(CA) for measuring the expansive remodeling(ER) ratio and assessing plaque stability. The ER ratio was calculated by dividing the maximum distance between the lumen and the outer border of the plaque in the internal CA by the lumen diameter within 1 centimeter of the plaque at the distal ipsilateral internal CA. ER ratios were compared between the symptomatic and asymptomatic groups. The 41 symptomatic patients were further divided into 4 groups according to stenosis rate(CA stenosis <50%, 50%–74%, 75–89%, and > 90%), and the correlation between the ER ratio and the rate of stenosis was evaluated. Results: There was a significant difference in ER ratio between the symptomatic and asymptomatic groups(p<0.001). When symptomatic patients were divided into 4 subgroups based on degree of stenosis, ER ratios among groups showed statistically significant differences(p=0.014). Conclusion: There were significant associations of the ER ratio with ischemic symptoms. Furthermore, the ER ratio in symptomatic patients continued to increase with stenosis severity. These findings suggested that the ER ratio might be a practical marker of plaque vulnerability in the CA and further prospective studies for asymptomatic patients are warranted. | Zheyi Chen Mei Li Minghua Li Yuwu Zhao Yueqi Zhu | 2018 | Journal of Interventional Medicine2018，1，2： | 5 |
您所在的机构暂未开通此部分的功能，请联系管理员