Time filter

Source Type

PubMed | Tongji University and General Hospital of Beijing Command
Type: Journal Article | Journal: Cellular and molecular biology (Noisy-le-Grand, France) | Year: 2015

Resistance to chemotherapeutic drugs is a major obstacle in hepatocellular carcinoma (HCC) therapy. MicroRNA—145 (miR—145) has been shown to be down—regulated in several cancers and may be involved in the process of carcinogenesis. The present study aimed to evaluate the effects of miR—145 in adriamycin (ADM)—resistant human HCC cells. We found that miR—145 was significantly reduced in HepG2/ADM and HuH7/ADM cells compared with the chemosensitive parental cells. Up—regulation of miR—145 increased the ADM cytotoxicity in chemoresistant tumor cells. In addition, Smad3 was identified as the target of miR—145 and miR—145 overexpression inhibited Smad3 expression both at the mRNA and protein levels. The luciferase reporter assay confirmed that Smad3 was a direct target of miR—145. Moreover, up—regulation of miR—145 suppressed Smad3 related EMT features as shown by increased expression of E—cadherin and reduced vimentin level in HepG2/ADM and HuH7/ADM cells. Our study demonstrated that miR—145 modulated both chemoresistance and EMT in HCC cells, and up—regulation of miR—145 might be a potential therapeutic strategy for treatment of chemoresistant HCC.


PubMed | General Hospital of Beijing Command and Xianghe Hospital of Traditional Chinese Medicine
Type: | Journal: Military Medical Research | Year: 2015

The treatment of hypertensive spontaneous intracranial hemorrhage (ICH) is still controversial. The purpose of the present study was to investigate whether minimally invasive puncture and drainage (MIPD) could improve patient outcome compared with decompressive craniectomy (DC).Consecutive patients with ICH (30 mL in basal ganglia within 24 hours of ictus) were non-randomly assigned to receive MIPD (group A) or DC (group B) hematoma evacuation. The primary outcome was death at 30 days after onset. Functional independence was assessed at 1 year using the Glasgow Outcome Scale.A total of 198 patients met the per protocol analysis (84 in group A and 114 in group B). The initial Glasgow Coma Scale (GCS) score was 8.1 3.4 and the National Institutes of Health Stroke Scale (NIHSS) score was 20.8 5.3. The mean hematoma volume (HV) was 56.7 23.0 mL, and there was extended intraventricular hemorrhage (IVH) in 134 patients. There were no significant intergroup differences in the above baseline data, except group A had a higher mean age than that of group B (59.4 14.5 vs. 55.3 11.1 years, P = 0.025). The cumulative mortalities at 30 days and 1 year were 32.3% and 43.4%, respectively, and there were no significant differences between groups A and B. However, the mortality for patients 60 years, NIHSS < 15 or HV60 mL was significantly lower in group A than that in group B (all P < 0.05). The cumulative functional independence at 1 year was 26.8%, and the difference between group A (33/84, 39.3%) and group B (20/114, 17.5%) was significant (P = 0.001). Multivariate logistic regression analysis showed that a favorable outcome after 1 year was associated with the difference in therapies, age, GCS, HV, IVH and pulmonary infection (all P <0.05).For patients with hypertensive spontaneous ICH (HV30 mL in basal ganglia), MIPD may be a more effective treatment than DC, as assessed by a higher rate of functional independence at 1 year after onset as well as reduced mortality in patients 60 years of age, NIHSS < 15 or HV60 mL.


Sheng Z.,CAS Shenzhen Institutes of Advanced Technology | Hu D.,CAS Shenzhen Institutes of Advanced Technology | Zheng M.,CAS Shenzhen Institutes of Advanced Technology | Zhao P.,CAS Shenzhen Institutes of Advanced Technology | And 7 more authors.
ACS Nano | Year: 2014

Phototherapy, including photodynamic therapy (PDT) and photothermal therapy (PTT), is a light-Activated local treatment modality that is under intensive preclinical and clinical investigations for cancer. To enhance the treatment efficiency of phototherapy and reduce the light-Associated side effects, it is highly desirable to improve drug accumulation and precision guided phototherapy for efficient conversion of the absorbed light energy to reactive oxygen species (ROS) and local hyperthermia. In the present study, a programmed assembly strategy was developed for the preparation of human serum albumin (HSA)-indocyanine green (ICG) nanoparticles (HSA-ICG NPs) by intermolecular disulfide conjugations. This study indicated that HSA-ICG NPs had a high accumulation with tumor-to-normal tissue ratio of 36.12 ± 5.12 at 24 h and a long-term retention with more than 7 days in 4T1 tumor-bearing mice, where the tumor and its margin, normal tissue were clearly identified via ICG-based in vivo near-infrared (NIR) fluorescence and photoacoustic dual-modal imaging and spectrum-resolved technology. Meanwhile, HSA-ICG NPs efficiently induced ROS and local hyperthermia simultaneously for synergetic PDT/PTT treatments under a single NIR laser irradiation. After an intravenous injection of HSA-ICG NPs followed by imaging-guided precision phototherapy (808 nm, 0.8 W/cm2 for 5 min), the tumor was completely suppressed, no tumor recurrence and treatments-induced toxicity were observed. The results suggest that HSA-ICG NPs generated by programmed assembly as smart theranostic nanoplatforms are highly potential for imaging-guided cancer phototherapy with PDT/PTT synergistic effects. © 2014 American Chemical Society.


Zou Z.,University of South China | Zou Z.,474th Hospital of Peoples Liberation Army | Jiang X.,University of South China | Zhang W.,University of South China | And 4 more authors.
Brain Research | Year: 2010

The aim of this study is to determine the efficacy of injecting adult bone marrow derived stem cells (BMSCs) transfected with a pEGFP-C2 plasmid containing the gene for Tyrosine Hydroxylase (TH) into the lateral ventricle for treating rats with Parkinson's Disease (PD) induced by injections into the Substantia Nigra pars compacta (SNc) with 6-hydroxydopamine (6-OHDA), a potent and selective neurotoxin for catecholamine expressing neurons. BMSCs were obtained from the femur of rats; transfected with plasmid constructed with TH and green fluorescent protein (GFP) (with about 85% co-transfection efficiency rate) and then cultured with neuronal differentiation media. Eighty rats were injected into the SNc with 6-OHDA and tested behaviorally to verify the model was induced. Then, 12 PD rats were injected into the anterior horn of the lateral ventricle with x105 cells, while 12 more rats were given saline as control. We found that 10 days after transplantation there was a significant (P < 0.01) reduction in Apomorphine induced rotations in rats receiving transplanted cells. Also, combined SNc and Striatal dopamine contents (μg/g wet tissue weight) in transplanted rats were greater than controls (0.19 ± 0.06 vs 0.63 ± 0.14 P < 0.01). Immunohistological examination found GFP expression, indicating the presence of transplanted cells within the brain, some of which had migrated through the nerve fibers along the ventricular wall. We feel this study shows the efficacy of genetically engineered BMSCs in the treatment of a rat model of PD. However, future experiments are needed to determine the mechanisms.


Hao T.,General Hospital of Beijing Command
Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery | Year: 2010

To investigate the effectiveness of autogenous platelet-rich plasma (PRP) gel with acellular xenogeneic dermal matrix in the treatment of deep II degree burns. From January 2007 to December 2009, 30 cases of deep II degree burns were treated. There were 19 males and 11 females with an average age of 42.5 years (range, 32-57 years). The burn area was 10% to 48% of total body surface area. The time from burn to hospitalization was 30 minutes to 8 hours. All patients were treated with tangential excision surgery, one side of the wounds were covered with autogenous PRP gel and acellular xenogeneic dermal matrix (PRP group), the other side of the wounds were covered with acellular xenogeneic dermal matrix only (control group). The healing rate, healing time, infection condition, and scar formation were observed. At 7 days after operation, the infection rate in PRP group (6.7%, 2/30) was significantly lower than that in control group (16.7%, 5/30, P < 0.05). The healing times were (18 +/- 4) days and (22 +/- 4) days respectively in PRP group and control group, showing significant difference (P < 0.05). The healing rates at 14 days and 21 days were 75% +/- 7% and 88% +/- 5% in PRP group, were 62% +/- 15% and 73% +/- 7% in control group, showing significant difference (P < 0.05). RPR group was superior to control group in elasticity, color, appearance, softness, scar formation, and healing quality. Autogenous PRP gel with acellular xenogeneic dermal matrix can accelerate the wound healing of deep II degree burns as well as alleviate the scar proliferation.


Gong J.,General Hospital of Beijing Command | Zhang Y.,Chinese Institute of Aviation Medicine | Yang Z.,Chinese Institute of Basic Medical Sciences | Huang Y.,General Hospital of Beijing Command | And 2 more authors.
Psychology, Health and Medicine | Year: 2013

The framing effect, identified by Tversky and Kahneman, is one of the most striking cognitive biases, in which people react differently to a particular choice depending whether it is presented as a loss or as a gain. Numerous studies have subsequently demonstrated the robustness of the framing effect in a variety of contexts, especially in medical decision-making. Compared to daily decisions, medical decisions are of low frequency but of paramount importance. The framing effect is a well-documented bias in a variety of studies, but research is inconsistent regarding whether and how variables influence framing effects in medical decision-making. To clarify the discrepancy in the previous literature, published literature in the English language concerning the framing effect was retrieved using electronic and bibliographic searches. Two reviewers examined each article for inclusion and evaluated the articles' methodological quality. The framing effect in medical decision-making was reviewed in these papers. No studies identified an influence of framing information upon compliance with health recommendations, and different studies demonstrate different orientations of the framing effect. Because so many variables influence the presence or absence of the framing effect, the unexplained heterogeneity between studies suggests the possibility of a framing effect under specific conditions. Further research is needed to determine why the framing effect is induced and how it can be precluded. © 2013 Taylor & Francis.


Xu A.,PLA Fourth Military Medical University | Xu A.,General Hospital of Beijing Command | Liu J.,PLA Fourth Military Medical University | Liu J.,General Hospital of Beijing Command | And 4 more authors.
Biochemical and Biophysical Research Communications | Year: 2014

Metabolic syndrome is a major risk factor for cardiovascular diseases, and increased cardiomyocyte apoptosis which contributes to cardiac dysfunction after myocardial ischemia/reperfusion (MI/R) injury. Nur77, a nuclear orphan receptor, is involved in such various cellular events as apoptosis, proliferation, and glucose and lipid metabolism in several cell types. Apoptosis is positively correlated with mitochondrial translocation of Nur77 in the cancer cells. However, the roles of Nur77 on cardiac myocytes in patients with metabolic syndrome remain unclear the objective of this study was to determine whether Nur77 may contribute to cardiac apoptosis in patients with metabolic syndrome after I/R injury, and, if so, to identify the underlying molecular mechanisms responsible. We used leptin-deficient (ob/ob) mice to make metabolic syndrome models. In this report, we observed that, accompanied by the substantial decline in apoptosis inducer Nur77, MI/R induced cardiac dysfunction was manifested as cardiomyopathy and increased ROS. Using the neonatal rat cardiac myocytes cultured in a high-glucose and high-fat medium, we found that excessive H2O2 led to the significant alteration in mitochondrial membrane potential and translocation of Nur77 from the nucleus to the mitochondria. However, inhibition of the relocation of Nur77 to mitochondria via Cyclosporin A reversed the changes in membrane potential mediated by H 2O2 and reduced myocardial cell injury therefore, these data provide a potential underlying mechanism for cardiac dysfunction in metabolic syndrome and the suppression of Nur77 translocation may provide an effective approach to reduce cardiac injury in the process. © 2014 Elsevier Inc. All rights reserved.


PubMed | Chinese Institute of Aviation Medicine and General Hospital of Beijing Command
Type: | Journal: EXCLI journal | Year: 2016

A contextual priming paradigm was used to investigate the influence of processing of configural/featural information and activation of expertise upon inversion effect. 32 participants were divided into Faces group (Faces priming vs. English letters priming) and Chinese characters group (Chinese characters priming vs. English letters priming). Pair matching tasks were performed in the processing of configural and featural information respectively. Participants were primed with either Face/Chinese characters or Combination of English letters, and then tested on ambiguous, undefined, but identical stimuli that could be interpreted as either faces/Chinese characters or combination of English letters in terms of different contextual priming. The presence of inversion effect in Faces and Chinese characters priming (only in the processing of configural information) and the absence of such effect in the English letters priming demonstrated that inversion effect should be attributed not only to the processing of configural information but also to the specific top-down priming mechanism. However, inversion effect of Chinese characters priming was distinct from that induced in the faces priming, and such effect of inversion in Chinese characters couldnt be explained by the recruitment of face-specific mechanisms, which justified the explanation of inversion effect by expertise.


PubMed | General Hospital of Beijing Command, Ningbo University and PLA Fourth Military Medical University
Type: Journal Article | Journal: Autophagy | Year: 2016

LAMP2A is the key protein of chaperone-mediated autophagy (CMA), downregulation of LAMP2A leads to CMA blockade. CMA activation has been implicated in cancer growth, but the exact mechanisms are unclear. Elevated expression of LAMP2A was found in 8 kinds of tumors (n=747), suggesting that LAMP2A may have an important role in cancer progression. Unsurprisingly, LAMP2A knockdown in gastric cancer (GC) cells hindered proliferation, accompanied with altered expression of cell cycle-related proteins and accumulation of RND3/RhoE. Interactomic and KEGG analysis revealed that RND3 was a putative CMA substrate. Further study demonstrated that RND3 silencing could partly rescue the proliferation arrest induced by LAMP2A knockdown; RND3 was increased upon lysosome inhibition via both chemicals and LAMP2A-shRNA; Furthermore, RND3 could interact with CMA components HSPA8 and LAMP2A, and be engulfed by isolated lysosomes. Thus, constant degradation of RND3 by CMA is required to sustain rapid proliferation of GC cells. At last, the clinical significance of LAMP2A was explored in 593 gastric noncancerous lesions and 173 GC tissues, the results revealed that LAMP2A is a promising biomarker for GC early warning and prognosis of female GC patients.


PubMed | General Hospital of Beijing Command
Type: Journal Article | Journal: Zhonghua yi xue za zhi | Year: 2015

To explore the Helicobacter pylori (Hp) infection rate among army and navy recruits, examine its associated risk factors and provide theoretic rationales for Hp control.A cross-sectionalstudy was performed for 1 732 subjects (aged 17-24 years) selected from 18 new recruit populations in Inner Mongolia and Zhoushan area from September 2013 to November 2013.Hp infection was detected by (13)C-urea breath test. Meanwhile, a questionnaire containing 62 potential factors related to Hp infection was surveyed. In addition, (13)C-urea breath test was performed in 513 navy veterans (aged 19-51 years) in Zhoushan area from April 2013 to October 2013. The data of risk factors were analyzed by (2) test and multivariate Logistic regression.A total of 2 162 soldiers were enrolled and 1 649 new recruits completed two surveys. The overall Hp infection rate was 46.5% (768/1 649), which is lower than the previous studies (52.9%). And it was 47.0% (377/802) in army new recruits and 46.0% (390/847) in navy new recruits. For new recruits, Hp infection was associated with number of family members, washing tableware with detergents, first drinking age and paring fruits before eating (all P < 0.05). However, there was no association with age, education level or washing hands before meal (all P > 0.05). The Hp infection rate was higher in recruits from the West China and North China.In addition, the infection rate was 60.8% (312/513) in a population of 513 veterans. It was 46.6% (768/1 649) in recruits less than onemonth of service, 59.2% (180/304) in recruits less than two years of service and 63.2% (132/209) in recruits more than two years of service, the difference had statistical significance(P < 0.05). Logistic analysis of multiple variables showed that number of family members, washing tableware with detergents, first drinking age and paring fruits before eating were independent risk factors (OR = 1.574, 0.538, 0.638, 0.855; 95%CI:1.077-2.301, 0.362-0.798, 0.486-0.837, 0.457-0.961).The Hp infection rate is similar between army and navy recruits. It has dropped significantly and its epidemic region changed in new male recruits compared to a decade ago in china. Hp infection clustered within families. The factors including fewer family members, washing tableware without detergents, first drinking at young age and no paring fruits before eating are risk factors of Hpinfection. And a longer service time is associated with higher Hp infection rate in recruits.

Loading General Hospital of Beijing Command collaborators
Loading General Hospital of Beijing Command collaborators