Abstract:
BACKGROUND:In tumors the process of apoptosis occurs over an interval of time after chemotherapy. It is important to determine the best time for detecting apoptosis by in vivo imaging. In this study, we evaluated the dynamics and feasibility of imaging non-small cell lung cancer (NSCLC) apoptosis induced by paclitaxel treatment using a (99)Tc(m)-labeled Annexin V recombinant with ten consecutive histidines (His10-Annexin V) in a mouse model. METHODS:(99)Tc(m)-His10-Annexin V was prepared by one step direct labeling; radio-chemical purity (RCP) and radio-stability was tested. The binding of (99)Tc(m)-His10-Annexin V to apoptotic cells was validated in vitro using camptothecin-induced Jurkat cells. In vivo bio-distribution was determined in mice by dissection. The human H460 NSCLC tumor cell line (H460) tumor-bearing mice were treated with intravenous paclitaxel 24, 48 and 72 hours later. (99)Tc(m)-His10-Annexin V was injected intravenously, and planar images were acquired at 2, 4 and 6 hours post-injection on a dual-head gamma camera fitted with a pinhole collimator. Tumor-to-normal tissue ratios (T/NT) were calculated by ROI analysis and they reflected specific binding of (99)Tc(m)-His10-Annexin V. Mice were sacrificed after imaging. Caspase-3, as the apoptosis detector, was determined by flow cytometry, and DNA fragmentation was analyzed by the terminal deoxynucleotidytransferase mediated dUTP nick-end labeling (TUNEL) assay. Nonspecific accumulation of protein was estimated using bovine serum albumin (BSA). The imaging data were correlated with TUNEL-positive nuclei and caspase-3 activity. RESULTS:(99)Tc(m)-His10-Annexin V had a RCP > 98% and high stability 2 hours after radio-labeling, and it could bind to apoptotic cells with high affinity. Bio-distribution of (99)Tc(m)-His10-Annexin V showed predominant uptake in kidney, relatively low uptake in myocardium, liver and gastrointestinal tract, and rapid clearance from blood and kidney was observed. The T/NT was significantly increased after paclitaxel treatment, whereas it was low in untreated tumors (T/NT = 1.43 ± 0.18). The %ID/g activity in Group 2 (24 hours), Group 3 (48 hours) and Group 4 (72 hours) after treatment was 2.55 ± 0.73, 3.35 ± 1.10, and 3.4 ± 0.96, respectively. Whereas in the non-treated group, Group 1, %ID/g was 1.10 ± 0.18. The radiotracer uptake was positively correlated to the apoptotic index (r = 0.852, P < 0.01), as well as caspase-3 activity (r = 0.816, P < 0.01). CONCLUSION:This study addresses the dynamics and feasibility of imaging non-small cell lung tumor apoptosis using (99)Tc(m)- His10-Annexin V.
journal_name
Chin Med J (Engl)journal_title
Chinese medical journalauthors
Zheng YM,Wang F,Fang W,Hua ZC,Wang ZZ,Meng QL,Yan Jsubject
Has Abstractpub_date
2013-01-01 00:00:00pages
2928-33issue
15eissn
0366-6999issn
2542-5641journal_volume
126pub_type
杂志文章abstract:OBJECTIVE:Familial hypertrophic cardiomyopathy (FHCM) is a primary myocardial disease characterized by unexplained ventricular hypertrophy. The application of the techniques of reverse genetics has identified at least five chromosomal loci as the major causes for FHCM in diverse ethnic populations, suggesting substanti...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1998-05-01 00:00:00
abstract:BACKGROUND:Periostin originally designated osteoblast-specific factor 2 (OSF-2) is frequently found to be highly expressed in various types of human cancer cell lines in vitro and human cancer tissues in vivo. We proposed that periostin was a key factor during the process of proliferation and invasion in cancer cells. ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2010-12-01 00:00:00
abstract:BACKGROUND:Colon cancer is one of the major malignancies worldwide and it still remains resistant to much of the currently available chemotherapy. Downregulation of HGF/c-Met signaling pathway is an emerging therapy for cancer treatment. METHODS:In this study, the inhibitory effects of c-Met phosphorylation were obser...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2013-07-01 00:00:00
abstract:BACKGROUND:Mitochondrial diseases are a group of energy metabolic disorders with multisystem involvements. Variable clinical features present a major challenge in pediatric diagnoses. We summarized the clinical spectrum of m.3243A>G mutation in Chinese pediatric patients, to define the common clinical manifestations an...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.187845
更新日期:2016-08-20 00:00:00
abstract:OBJECTIVES:To study mitogen-activated protein kinase (MAPKs) activation in fibroblast-like synoviocytes (FLS) of rheumatoid arthritis (RA) under the stimulation of IL-1 beta, and to elucidate the role of protein tyrosine kinase (PTK) in the activation of MAPKs. METHODS:Primary cultures of RA FLS were used. Western blo...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2000-10-01 00:00:00
abstract:BACKGROUND:Cornea epithelial cells play early and crucial roles in the initiation of ocular surface responses to pathogens. Participation of toll-like receptor (TLR) 2 and TLR4, which are major forms of fungi receptors, may be involved in Aspergillus fumigatus induced immune responses. The objective of the present stud...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2008-03-05 00:00:00
abstract:OBJECTIVE:To determine the in vitro expression of interleukin-12 (IL-12) and its effect on signal transducers and activators of transcription (STAT) signaling molecules in peripheral blood mononuclear cells (PBMCs) in patients with systemic lupus erythematosus (SLE). METHODS:Peripheral blood mononuclear cells in 39 pa...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2002-06-01 00:00:00
abstract:BACKGROUND:Fractional flow reserve (FFR) has become an increasingly important index when making decisions with respect to revascularization of coronary artery stenosis. However, the pressure guidewire used in obtaining FFR measurements is difficult to control and manipulate in certain complex coronary artery lesions, r...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.152664
更新日期:2015-03-20 00:00:00
abstract:BACKGROUND:Glaucoma can cause progressive damage to retinal ganglion cells. These cells can be classified as cells projecting to the superior colliculus and melanopsin-containing retinal ganglion cells, which project to the suprachiasmatic nucleus. This study was to investigate the effects of chronic intraocular pressu...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2008-06-05 00:00:00
abstract::This study evaluated the diagnostic value of high resolution CT (HRCT) for atresia of the external auditory meatus (EAM) and isolated middle ear malformation. CT scan of the temporal bone was done in 33 patients with such disorders and 5 patients with otosclerosis etc. were studied in the same way for comparison. Coro...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1992-06-01 00:00:00
abstract:BACKGROUND:Imaging-guided thermal ablation using different energy sources continues to gain favor as a minimally invasive technique for the treatment of primary and metastatic hepatic malignant tumors. This study aimed to evaluate the performance of microwave ablation with 2450-MHz internally cooled-shaft antenna in ex...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-10-01 00:00:00
abstract:BACKGROUND:There are few studies to assess whether propofol attenuates myocardial ischemia-reperfusion injury via a mechanism related to nitric oxide (NO) route, so we designed this randomized blinded experiment to observe the changes of NO contents, nitric oxide synthase (NOS) activity, NOS contents in the myocardium,...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2009-12-20 00:00:00
abstract:BACKGROUND:During the last 3 decades, China has dramatic changes of the dietary pattern among its citizens, particularly in urban cities. This study aimed to determine the nutrient intake status and factors associated with nutrient intakes of urban Chinese pregnant women now-a-day. METHODS:The multistage stratified ra...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.159354
更新日期:2015-07-05 00:00:00
abstract:BACKGROUND:Chronic intermittent hypoxia (CIH) is the most important pathophysiologic feature of sleep apnea syndrome (SAS). To explore the relationship between SAS and dementia, the effects of CIH on the expression of Nip3, neuron apoptosis and beta-amyloid protein deposit in the brain cortex of the frontal lobe of mic...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2009-01-05 00:00:00
abstract:BACKGROUND:Urine output (UO) is an essential criterion of the Kidney Disease Improving Global Outcomes (KDIGO) definition and classification system for acute kidney injury (AKI), of which the diagnostic value has not been extensively studied. We aimed to determine whether AKI based on KDIGO UO criteria (KDIGOUO) could ...
journal_title:Chinese medical journal
pub_type: 杂志文章,多中心研究
doi:10.4103/0366-6999.189059
更新日期:2016-09-05 00:00:00
abstract:OBJECTIVE:To study the pharmacodynamics of vecuronium,atracurium, mivacurium and rocuronium in patients with end-stage renal failure. METHODS:Forty-six patients with end-stage renal failure scheduled for renal transplantation and 53 patients with normal renal function were given either vecuronium, atracurium, mivacuri...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2002-11-01 00:00:00
abstract:BACKGROUND:Atypical meningioma is one of the rare subtypes of meningioma, which is lacking of optimal consensus on treatment strategies. This study aimed to investigate the radical treatment strategies to improve the long-term outcome of recurrent atypical meningiomas. METHODS:The prognostic factors including the age ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-08-01 00:00:00
abstract::Atrial fibrillation (AF) is the most common sustained dysrhythmia in clinical practice. The bulk of evidence suggests that inflammatory processes, oxidative stress and matrix metalloproteinase are associated with development of AF. However, these agents may be involved in high mobility group box 1 protein (HMGB1). We ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2012-07-01 00:00:00
abstract:OBJECTIVE:To investigate the effect of U14 vaccine transfected with the B7 gene in inducing antitumor immune response to murine cervical carcinoma in Chinese 615-strain mice. METHODS:A recombinant retroviral plasmid vector expressing mouse B7-1 gene (pLNSX-mB7) was transfected into 615-strain mouse cervical carcinoma ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2001-06-01 00:00:00
abstract:BACKGROUND:Chronic hepatic inflammation is characterized by the accumulation of lymphocytes as a consequence of increased recruitment from the blood and retention within the tissue at sites of infection. CXC chemokine ligand 16 (CXCL16) mRNA has been detected in both inflamed and normal liver tissues and is strongly up...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-03-01 00:00:00
abstract:OBJECTIVE:To study whether human umbilical cord blood CD34+ cells transduced with human aldehyde dehydrogenase class-1 (ALDH-1) and multidrug resistance gene (MDR1) have increases resistance to 4-Hydroperoxycyclo-phosphamide (4-HC) and P-glycoprotein effluxed drugs. METHODS:A bicistronic retroviral vector G1Na-ALDH1-I...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND:Chronic liver diseases are a major burden in China. Alanine aminotransferase (ALT) can be used as an indicator of hepatocyte damage. In this study, we determined the prevalence and etiologies of elevated ALT in an adult population in Jilin, China. METHODS:A total of 4072 individuals aged between 18 and 79 y...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-09-01 00:00:00
abstract:BACKGROUND:Eating disorders (EDs) are serious illnesses associated with medical complications and have been increased, especially among societies with an excessive concern about weight, shape, or appearance. This study aimed to investigate the prevalence of EDs among the individuals attending weight management centers ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.221270
更新日期:2018-01-05 00:00:00
abstract:BACKGROUND:O(6)-methylguanine-DNA-methyltransferase (MGMT) is a specific DNA revising enzyme transferring alkylated groups from DNA to its cysteine residue to avoid the abnormal twisting of DNA. Therefore, it is one of the drug resistant genes targeted in the treatment of cancer. This study explored the protective effe...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2007-04-20 00:00:00
abstract:BACKGROUND:Both cortical and cortical-subcortical (cortex-involved) lesions are typically associated with embolic stroke, of which atrial fibrillation (AF) is the common cause. The aim of this study was to find out the associations between cortex-involved stroke, vascular risk factors, and the subtypes (discovery time ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.1097/CM9.0000000000000390
更新日期:2019-09-05 00:00:00
abstract:BACKGROUND:For patients with severe endometriosis, the spontaneous pregnancy rates have been reported to be near 0 due to extreme distortion of normal pelvic anatomy. Surgery is one of the treatment options; however, if patients failed to conceive after surgery, in vitro fertilization (IVF) is effective. The objective ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2010-08-01 00:00:00
abstract::1 141 serum samples from various population groups in north China were examined for C100-3Ab by ELISA. Antibody to C100-3 antigen derived from HCV genome (C100-3A) and HBsAg were measured in 438 normal population in Beijing. The C100-3Ab positive rate was 2.1% and the HBsAg positive rate was 2.5%. There is increased o...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1992-03-01 00:00:00
abstract::An epidemic of parenterally transmitted non-A, non-B hepatitis (PT-NANBH) occurred in plasmapheresis donors in Guan County, Hebei Province, China, in 1985. PT-NANBH was diagnosed by epidemiological studies and serological exclusion of HAV, HBV, CMV and EBV infections. Recently, 163 sera samples of 108 patients with PT...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1991-06-01 00:00:00
abstract:BACKGROUND:Four single nucleotide polymorphisms (SNPs) in the modulator recognition factor 2/AT-rich interaction domain 5B (MRF2/ARID5B) gene located at chromosome 10q21.2 have been shown to be associated with both type 2 diabetes mellitus (T2DM) and coronary artery disease in a Japanese cohort. This study aimed to inv...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.204926
更新日期:2017-05-05 00:00:00
abstract::Selective ablation of slow pathway by radiofrequency (RF) current in 34 patients with atrioventricular (AV) node pathways and tachycardia was performed with two methods in our section; posterior approach was used in the first 12 patients, the slow pathways were ablated successfully. Inferior approach was performed in ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1994-08-01 00:00:00