201
|
Ren S, Zhang Z, Jiang H, Wu C, Liu J, Liang L, Li B, Liu L, Wang H, Schmid-Bindert G. Combination of endobronchial ultrasound-guided transbronchial needle aspiration with standard bronchoscopic techniques enhanced the diagnosis yields of pulmonary tuberculosis patients with lymphadenopathy. Panminerva Med 2013; 55:363-370. [PMID: 24189573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
AIM Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) was reported to be useful for diagnosis of tuberculosis (TB) lymphadenitis, although its indication remains unclear for suspicious pulmonary TB patients. To clarify the role of EBUS-TBNA for the diagnosis of immunocompetent TB patients with intrathoracic lymphadenopathy, we compared two diagnostic modalities: traditional bronchoscopy alone and EBUS-TBNA combined with bronchoscopy. METHODS We retrospectively studied 175 patients of suspicious pulmonary TB with intrathoracic lymphadenopathy in a single institute (Tongji University, Shanghai, China) from January 2010 to May 2011. RESULTS Ninety-seven patients underwent traditional bronchoscopy alone while 78 received the combined diagnostic techniques. Sensitivity and specificity were 18.1% and 100%, respectively, in the bronchoscopy group alone, and 80% and 92.3%, respectively, in the EBUS-TBNA combination group (absolute increase in sensitivity, 61.9%; P<0.001; 95% CI, 48.7-75.1%). In the combination group, EBUS-TBNA alone was diagnostic of TB in 42 patients (64.6%, 95% CI, 53-76.2%). Bleeding without hemodynamic instability developed in two patients during the procedure of EBUS-TBNA and no hospitalization prolongation happened in the both arms. CONCLUSION Combination of EBUS-TBNA with standard bronchoscopic technique is safe and significantly increases the diagnostic yield in patients of suspicious pulmonary TB with lymphadenopathy.
Collapse
|
202
|
Lin Q, Ye LC, Ren L, Wei Y, Zhu DX, Liang L, Xu J. BRAF, PIK3CA Alterations can Predict Outcomes to Cetuximab Contained Conversion Chemotherapy in Wild-Type KRAS CLM. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt459.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
203
|
Lin Q, Liang L, Wang LH, Ni QL, Yang K, Zhang J, Chen DL, Yang JJ, Shen XD. Roles of pyrolysis on availability, species and distribution of Cu and Zn in the swine manure: chemical extractions and high-energy synchrotron analyses. CHEMOSPHERE 2013; 93:2094-2100. [PMID: 23972909 DOI: 10.1016/j.chemosphere.2013.07.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 07/24/2013] [Accepted: 07/29/2013] [Indexed: 06/02/2023]
Abstract
Animal manures generally contain high levels of heavy metals that may pose a significant threat to soil and groundwater qualities. Pyrolysis as means of reducing metal availability in such feed stocks is recently encouraged, but systematic studies are currently lacking. The aim of this study was to assess the impact of pyrolysis temperature on the availability of Cu and Zn by chemical extraction, to determine the speciation of Cu and Zn by synchrotron-based X-ray spectroscopy, and finally to investigate the phase distribution of metal species in the carbonaceous materials by combining acid-base extractions and absorption spectroscopy data. The results showed that both Cu and Zn in the swine manure were mainly bound to organic functional groups. Cu (II) reduction and Cu (I)-S complexes were observed during the pyrolysis process. Zn species resembling ZnAc2 was still dominant, being 60.8-69.2%, and ZnS increased by 6.6-21.8% in the carbonaceous materials. The distribution of Cu and Zn in the mineral, carbonized and non-carbonized organic phases varied greatly with the pyrolysis temperature. The higher the temperature, the more the metals existed in the mineral phase and carbonized organic phase. The decrease of EDTA extractable Cu and Zn with pyrolysis temperature was due to the increase of metals in the carbonized organic phase and mineral phase. It is suggested that pyrolysis at the relatively higher temperature is a better choice for metal-containing manure according to the metal speciation, solubility and availability.
Collapse
|
204
|
Zhong Y, Zhu D, Liang L, Ye Q, Wei Y, Ren L, Pan X, Fan J, Xu J, Qin X. The results of surgery for colorectal hepatic metastases following expansion of the indications in 2005. Colorectal Dis 2013; 15:e429-34. [PMID: 23663516 DOI: 10.1111/codi.12275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Revised: 12/13/2012] [Accepted: 01/13/2013] [Indexed: 02/08/2023]
Abstract
AIM Safety and survival were investigated in patients treated according to expanded surgical indications for colorectal hepatic metastases. METHOD A retrospective analysis of all consecutive patients who underwent resection of colorectal hepatic metastases at Zhongshan Hospital from 2000 to 2010 was conducted. The patients were divided into two groups based on a change in the surgical indications introduced in 2005. Patients in Group I underwent hepatic surgery between 2000 and 2004 and those in Group II between 2005 and 2010. The clinicopathological data and survival rates of both groups were analysed. RESULTS There were 530 patients who underwent hepatic surgery between 2000 and 2010. After the expansion of surgical indications, the rate of surgical resection rose from 25.1 to 35.1% (P < 0.05). There was no significant difference in perioperative mortality (2.2% vs 0.9%) or morbidity (20.9% vs 29.8%). Recurrence occurred in 27.5% and 36.7% in Groups I and II, respectively, and 5-year overall survival was 43% and 49%, respectively (not significant). CONCLUSION Expanding the indications for surgical resection of hepatic metastases increased the resection rate but had no significant effect on survival.
Collapse
|
205
|
Zhan Z, Chen D, Lian F, Qiu Q, Liang L, Yang X. SAT0202 Identification of thiopurine methyltransferase (TPMT) activity can predict azathioprine-related hematotoxicity in the maintenance therapy of systemic lupus erythematosus patients. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.3149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
206
|
Chen D, Lian F, Zhan Z, Ye Y, Liang L, Xu H, Yang X. THU0146 Predictive Value of Anti-Cyclic Citrullinated Peptide Antibodies in the Further Development of Rheumatoid Arthritis in Undifferentiated Arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
207
|
Ye Y, Yuan S, Chen D, Zhan Z, Lian F, Qiu Q, Li H, Liang L, Xu H, Yang X. FRI0328 Protective and risk factors related to recurrence and prognosis in lupus enteritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
208
|
Lian F, Wang Y, Xu H, Chen D, Zhan Z, Liang L, Qiu Q, Ye Y, Yang X. THU0157 Tripterygium WILFORDII multiglycoside combined regimen as long-term maintenance therapy in chinese rheumatoid arthritis patients. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
209
|
Pan M, Shao X, Liang L. Analysis of Velocity Uniformity in a Single Microchannel Plate with Rectangular Manifolds at Different Entrance Velocities. Chem Eng Technol 2013. [DOI: 10.1002/ceat.201200496] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
210
|
Qi M, Chen H, Liu Y, Zhang Y, Liang L, Yuan W. The use of a zero-profile device compared with an anterior plate and cage in the treatment of patients with symptomatic cervical spondylosis. Bone Joint J 2013; 95-B:543-7. [PMID: 23539708 DOI: 10.1302/0301-620x.95b4.30992] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In a retrospective cohort study we compared the clinical outcome and complications, including dysphagia, following anterior cervical fusion for the treatment of cervical spondylosis using either a zero-profile (Zero-P; Synthes) implant or an anterior cervical plate and cage. A total of 83 patients underwent fusion using a Zero-P and 107 patients underwent fusion using a plate and cage. The mean follow-up was 18.6 months (sd 4.2) in the Zero-P group and 19.3 months (sd 4.1) in the plate and cage group. All patients in both groups had significant symptomatic and neurological improvement. There were no significant differences between the groups in the Neck Disability Index (NDI) and visual analogue scores at final follow-up. The cervical alignment improved in both groups. There was a higher incidence of dysphagia in the plate and cage group on the day after surgery and at two months post-operatively. All patients achieved fusion and no graft migration or nonunion was observed. When compared with the traditional anterior cervical plate and cage, the Zero-P implant is a safe and convenient procedure giving good results in patients with symptomatic cervical spondylosis with a reduced incidence of dysphagia post-operatively. Cite this article: Bone Joint J 2013;95-B:543–7.
Collapse
|
211
|
Parks JM, Johs A, Podar M, Bridou R, Hurt RA, Smith SD, Tomanicek SJ, Qian Y, Brown SD, Brandt CC, Palumbo AV, Smith JC, Wall JD, Elias DA, Liang L. The Genetic Basis for Bacterial Mercury Methylation. Science 2013; 339:1332-5. [DOI: 10.1126/science.1230667] [Citation(s) in RCA: 600] [Impact Index Per Article: 54.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
|
212
|
Yang J, Chen Y, Jia X, Luo Y, Song Q, Zhao W, Wang Y, Liu H, Zheng D, Xia Y, Yu R, Han X, Jiang G, Zhou Y, Zhou W, Hu X, Liang L, Han L. Dissemination and characterization of NDM-1-producing Acinetobacter pittii in an intensive care unit in China. Clin Microbiol Infect 2012; 18:E506-13. [DOI: 10.1111/1469-0691.12035] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
213
|
Shi N, Tian C, Liang X, Jiang P, Liang L, Zhou L, Shu Y, Chen P, Wang Y. Proteome analysis of actin filament-associated proteins in the postnatal rat cerebellum. Neuroscience 2012; 227:90-101. [DOI: 10.1016/j.neuroscience.2012.09.050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 08/21/2012] [Accepted: 09/22/2012] [Indexed: 10/27/2022]
|
214
|
Smillie SJ, King R, Pozsgai G, Liang L, Fernandes E, Marshall N, Howat S, Winter PD, Heads H, Shah A, Siow R, Dessapt-Baradez C, Gnudi L, Brain SD. α CALCITONIN GENE-RELATED PEPTIDE (αCGRP) PLAYS A PROTECTIVE ROLE IN THE ONSET OF ANGIOTENSIN-II INDUCED HYPERTENSION AND VASCULAR INFLAMMATION/REMODELLING. BRITISH HEART JOURNAL 2012. [DOI: 10.1136/heartjnl-2012-303148a.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
215
|
Ye L, Zhu D, Ren L, Wei Y, Pan X, Zhong Y, Liang L, Xu B, Liu T, Xu J. Tumor Response and Secondary Resectability of Colorectal Liver Metastases Following Cetuximab with Chemotherapy: A Randomized, Controlled Study. Ann Oncol 2012. [DOI: 10.1093/annonc/mds556] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
216
|
Sun B, McCreath H, Liang L, Bohan S, Baugh C, Ragsdale L, Henderson S, Clark C, Keeler E, Ruopeng A, Mangione C. 18 Randomized Evaluation of an Emergency Department Observation Syncope Protocol (EDOSP). Ann Emerg Med 2012. [DOI: 10.1016/j.annemergmed.2012.06.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
217
|
Guo YD, Cai JF, Meng FM, Chang YF, Gu Y, Lan LM, Liang L, Wen JF. Identification of forensically important flesh flies based on a shorter fragment of the cytochrome oxidase subunit I gene in China. MEDICAL AND VETERINARY ENTOMOLOGY 2012; 26:307-313. [PMID: 22150605 DOI: 10.1111/j.1365-2915.2011.01003.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
With the development of molecular identification, there has been a great deal of discussion about the feature of the mitochondrial DNA (mtDNA) fragments. Although longer fragments may minimize stochastic variation across taxa and be more likely to reflect broader patterns of nucleotide divergence, shorter fragments have many advantages, such as quick, easy and economical. Extensive application of long mtDNA segments for species identification cannot always be achieved as a result of constraints in time and money. In the present study, a molecular identification method involving the sequencing of a 272-bp 'barcode' fragment of the mitochondrial cytochrome oxidase subunit I (COI) gene from 55 specimens, representing 7 Chinese sarcophagid species from varying populations, was evaluated. Phylogenetic analysis of the sequenced segments showed that all sarcophagid specimens were properly assigned into seven species, which indicated the possibility of separation congeneric species with the short fragments. The results of this research will be instrumental for the implementation of the Chinese Sarcophagidae database.
Collapse
|
218
|
Ke G, Liang L, Yang JM, Huang X, Han D, Huang S, Zhao Y, Zha R, He X, Wu X. MiR-181a confers resistance of cervical cancer to radiation therapy through targeting the pro-apoptotic PRKCD gene. Oncogene 2012; 32:3019-27. [PMID: 22847611 DOI: 10.1038/onc.2012.323] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The purpose of this study was to define the roles of miR-181a in determining sensitivity of cervical cancer to radiation therapy, to explore the underlying mechanism and to evaluate the potential of miR-181a as a biomarker for predicting radio-sensitivity. Tumor specimens from 18 patients with a histological diagnosis of squamous cervical carcinoma (stage IIIB) were used in the micro-RNA profiling and comparison. These patients never received any chemotherapy before radiation therapy. Human cervical cancer cell lines, SiHa and Me180, were used in vitro (cell culture) and in vivo (animal) studies. Transfection of tumor cells with the mimic or inhibitor of miR-181a, and reporter gene assay, were performed to investigate the role of miR-181a in determining radio-sensitivity and the target gene. Higher expression of miR-181a was observed in human cervical cancer specimens and cell lines that were insensitive to radiation therapy, as compared with sensitive cancer specimens and the cell lines. We also found that miR-181a negatively regulated the expression of PRKCD, a pro-apoptotic protein kinase, via targeting its 3'-untranslated region (UTR), thereby inhibiting irradiation-induced apoptosis and decreasing G2/M block. The role of miR-181a in conferring cellular resistance to radiation treatment was validated both in cell culture models and in mouse tumor xenograft models. The effect of miR-181a on radio-resistance was mediated through targeting the 3'-UTR of PRKCD gene. Thus, the expression level of miR-181a in cervical cancer may serve as a biomarker for sensitivity to radiation therapy, and targeting miR-181a may represent a new approach to sensitizing cervical cancer to radiation treatment.
Collapse
|
219
|
Lin CB, Peterson ED, Smith EE, Saver JL, Liang L, Xian Y, Olson DM, Shah BR, Hernandez AF, Schwamm LH, Fonarow GC. Patterns, Predictors, Variations, and Temporal Trends in Emergency Medical Service Hospital Prenotification for Acute Ischemic Stroke. J Am Heart Assoc 2012. [DOI: 10.1161/jaha.112.002345x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
220
|
Zhang J, Liang L, Tian Z, Chen L, Subirade M. Preparation and in vitro evaluation of calcium-induced soy protein isolate nanoparticles and their formation mechanism study. Food Chem 2012; 133:390-9. [DOI: 10.1016/j.foodchem.2012.01.049] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 11/01/2011] [Accepted: 01/17/2012] [Indexed: 11/25/2022]
|
221
|
Burmeister J, Spink R, Liang L, Bossenberger T, Halford R, Brandon J, Delauter J, Snyder M. TH-C-BRB-09: Commissioning of Intensity Modulated Neutron Radiotherapy (IMNRT). Med Phys 2012. [DOI: 10.1118/1.4736312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
222
|
Merlet E, Lipskaia L, Marchand A, Hadri L, Mougenot N, Atassi F, Liang L, Hatem SN, Hajjar RJ, Lompré AM. A calcium-sensitive promoter construct for gene therapy. Gene Ther 2012; 20:248-54. [PMID: 22456325 DOI: 10.1038/gt.2012.30] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Targeting diseased cells is a challenging issue in both pharmacological and biological therapeutics. Gene therapy is emerging as a novel approach for treating rare diseases and for illnesses for which there is no other alternative. An important limitation of gene therapy has been the off-target effects and therefore efforts have been focused on increasing the specificity of gene transfer to the targeted organ. Here, we describe a promoter containing six nuclear factor of activated T cells (NFAT) consensus sequences, which is as efficient as the cytomegalovirus (CMV) promoter to drive expression in vascular smooth muscle cells both in vitro and in vivo. In contrast to the CMV promoter it is activated in a Ca(2+)-dependent manner after endoplasmic reticulum depletion and allows the transgene expression only in proliferative/diseased cells. Overexpression of sarco/endoplasmic reticulum (SR/ER) Ca(2+) ATPase 2a under the control of this NFAT promoter inhibits restenosis after angioplasty in rats. In conclusion, this promoter may be useful for gene therapy in vascular proliferative diseases and other diseases involving upregulation of the NFAT pathway.
Collapse
|
223
|
Hou GQ, Sun JC, Zhang XJ, Shen BX, Zhu XJ, Liang L, Zhang XL. MR imaging findings of the intraspinal meningeal melanocytoma: correlation with histopathologic findings. AJNR Am J Neuroradiol 2012; 33:1525-9. [PMID: 22442042 DOI: 10.3174/ajnr.a2987] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Our aim was to better understand and improve the accuracy of the preoperative diagnosis of intraspinal MM by a combined analysis of MR imaging and pathologic findings. All 5 patients had undergone unenhanced and contrast-enhanced MR imaging examinations. All tumor samples had immunohistochemical reactions to HMB-45, vimentin, S-100, EMA, and Leu-7 antibodies. All 5 cases were located in the intradural extramedullary compartment. Two cases had multifocal lesions, and 3 cases were solitary. Two cases showed homogeneously strong enhancement, and 3 cases showed moderate enhancement on contrast-enhanced T1WI. The tumor cells had positive reactions to HMB-45, vimentin, and S-100 antibodies. MR imaging plays an important role in the detection and diagnosis of intraspinal MM. Final diagnosis should be based on histopathology and IHC examinations.
Collapse
|
224
|
Ma T, Liu H, Chen W, Xia X, Bai X, Liang L, Zhang Y, Liang T. Implanted adipose-derived stem cells attenuate small-for-size liver graft injury by secretion of VEGF in rats. Am J Transplant 2012; 12:620-9. [PMID: 22151301 DOI: 10.1111/j.1600-6143.2011.03870.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Graft injury after small-for-size liver transplantation impairs graft function and threatens the survival of the recipients. The use of adipose-derived stem cells (ADSCs) for liver injury protection and repair is promising. Our aim was to investigate the role of vascular endothelial growth factor (VEGF) secreted by ADSCs in the treatment of small-for-size liver graft injury. Studies were performed using ADSCs with VEGF secretion blocked by RNA interference. In vitro, ADSCs prevented apoptosis of freshly isolated liver sinusoidal endothelial cells (LSECs) by secretion of VEGF. Syngeneic 35% orthotopic liver transplantation followed by implantation of syngeneic ADSCs through the portal vein system was performed using Wistar rats. We found VEGF secreted by implanted ADSCs improved graft microcirculatory disturbances, serum liver function parameters and survival. The improved microcirculatory status was also reflected by reduced hepatocellular damage, especially LSEC apoptosis and improved liver regeneration. These effects were accompanied by decreased expression of endothelin receptor type A, increased Bcl-2/Bax ratio, decreased expression of Bad and elevated proportion of phosphorylated Bad. In conclusion, implanted syngeneic ADSCs attenuated small-for-size liver graft injuries and subsequently enhanced liver regeneration in a rat 35% liver transplantation model. The VEGF secreted by implanted ADSCs played a crucial role in this process.
Collapse
|
225
|
Chaanine AH, Jeong D, Liang L, Chemaly ER, Fish K, Gordon RE, Hajjar RJ. JNK modulates FOXO3a for the expression of the mitochondrial death and mitophagy marker BNIP3 in pathological hypertrophy and in heart failure. Cell Death Dis 2012; 3:265. [PMID: 22297293 PMCID: PMC3288347 DOI: 10.1038/cddis.2012.5] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Bcl-2 E1B 19-KDa interacting protein 3 (BNIP3) is a mitochondrial death and mitophagy marker, which is involved in inducing cardiac remodeling post myocardial infarction. In this study, we show that BNIP3 expression increases in stressed cardiomyocytes in vitro and in response to pressure overload in vivo, and that its transcription is directly related to JNK activity. BNIP3 expression gradually increased in the first weeks after pressure overload and peaked at the heart failure stage. Ultrastructurally, the mitochondrial area was inversely proportional to BNIP3 expression. Both JNK and AKT activities increased with pressure overload; however, JNK signaling dominated over AKT signaling for the activation of the transcription factor FOXO3a and for the transcription of its effector, BNIP3. 3-methyladenine attenuated JNK signaling and significantly decreased BNIP3 expression and reversed cardiac remodeling in heart failure. Ultrastructurally, the mitochondrial area was significantly increased in the 3-methyladenine group compared with placebo. Moreover, adenoviral gene delivery of dominant negative JNK in a rat model of pressure overload hypertrophy abolished the increase in BNIP3 expression in response to pressure overload. These results suggest that JNK signaling is a critical modulator of the transcription factor FOXO3a driving the expression of its effector, BNIP3, in heart failure and that JNK, through BNIP3, induces mitochondrial apoptosis and mitophagy.
Collapse
|