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Feng HL, Guo P, Wang J, Liu QY, Xu JF, Yang HC, Zhang JM. [Association of the expression of leptin and leptin receptor with bone metastasis in pulmonary adenocarcinoma]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 2017; 38:840-844. [PMID: 27998443 DOI: 10.3760/cma.j.issn.0253-3766.2016.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the association of expression of leptin and leptin receptor (LR) with bone metastasis of pulmonary adenocarcinoma. Methods: One hundred and sixteen pulmonary adenocarcinoma patients who had complete clinicopathological data and definite pathological diagnosis in our hospital from January 2008 to January 2010 were selected. They were divided into the metastasis (n= 58) and non-metastasis (control, n=58) groups. The expressions of leptin and LR were identified by immunohistochemistry. The differences between expressions of leptin and LR in primary pulmonary adenocarcinoma tissues and metastasis, and between the groups with and without bone metastasis were analyzed. We also analyzed the correlation of leptin and LR expressed in primary adenocarcinoma and bone metastatic tissues, and the relationship between their expression levels and bone metastasis free survival (BMFS). Results: Among 58 patients of the metastasis group, the cases of high, moderate and low expressions of leptin were 36, 15 and 7, respectively, and the cases of high, moderate and low expressions of LR were 32, 17 and 9, respectively. Among the 58 patients of control group, the cases of high, moderate and low expressions of leptin were 19, 24 and 15, respectively, and those of LR were 17, 16 and 25, respectively. The expressions of leptin and LR in primary pulmonary adenocarcinoma tissues of metastasis group were significantly different from those of the control group (P=0.006, P=0.002, respectively). The expressions of leptin and LR in primary pulmonary adenocarcinoma tissues of the bone metastasis group were also significantly different from those of the non-bone metastasis group (P=0.029, P=0.032, respectively). The high/moderate expression rates of leptin and LR in the bone-metastatic tissues reached 91.4% (32/35) and 88.6% (31/35), respectively. The results showed that the expressions of leptin and LR in primary pulmonary adenocarcinoma tissues were positively related with their expressions in bone metastatic tissue (r = 0.612). The median bone metastasis free survival (BMFS) of the bone metastasis groups with high, moderate and low expressions of leptin were 14, 21 and 47 months, respectively, and the median BMFS of high, moderate and low expressions of LR in the bone metastasis group were 13, 19 and 27 months, respectively. The expressions of leptin and LR in pulmonary adenocarcinoma were significantly associated with BMFS (P<0.001, P=0.006, respectively). Conclusions: The expressions of leptin and LR are significantly up-regulated in primary pulmonary adenocarcinoma tissues and bone metastatic tissues, and are negatively correlated with BMFS. These two molecules may be used as effective predictors of bone metastasis in pulmonary adenocarcinoma.
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Du Y, Li C, Guo J, Guo P, Li ZY, Zhang W. [A report of atypical hypomyelinating leukodystrophy with atrophy of the basal ganglia and cerebellum caused by a de novo mutation in tubulin beta 4A ( TUBB4A) gene and literature review]. ZHONGHUA NEI KE ZA ZHI 2017; 56:433-437. [PMID: 28592043 DOI: 10.3760/cma.j.issn.0578-1426.2017.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the clinical symptoms and neuroimaging features of a patient with atypical hypomyelinating leukodystrophy with atrophy of the basal ganglia and cerebellum (H-ABC) caused by a novel TUBB4A mutation. Methods: We analyzed the clinical data, imaging features and the result of genetic testing of a case diagnosed as atypical H-ABC. Results: The initial symptoms were progressive spasticity, mild cerebellar ataxia and mild cognitive impairment. MRI showed regional blurring of slight high signal on T(2)-weight and FLAIR image in white matter of the bilateral midbrain ventral, internal capsule, posteior horn of lateral ventricle and centrum semiovale, with normal bilateral cerebellar and caudoputamen nucleus. Compared with normal subjects of the same age and gender, hypometabolism was found by (18)F-FDG-PET in brainstem, cerebellar and caudoputamen nucleus in the patient. Genetic testing revealed a de novo pathogenic exome missense heterozygous mutations c. 70G>A in TUBB4A, which was not reported in the human gene mutation database (HGMDpro) and was assessed to be a pathogenic mutation by pathogenic mutation prediction software. Conclusions: The diversity of TUBB4A gene mutations may cause different functional and/or structural impairment in subcortical white matter, cerebellar and caudoputamen nucleus, leading to atypical symptoms and neuroimaging features. Genetic testing for pathogenic mutation in TUBB4A gene is a key for the diagnosis of H-ABC.
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Dong L, Shi YK, Xu JP, Zhang EY, Liu JC, Li YX, Ni YM, Yang Q, Han T, Fu B, Chen J, Ren L, Wei SL, Chen H, Liu KX, Yu FX, Liu JS, Xiao MD, Wu SM, Zhang KL, Huang HL, Jiang SL, Qiao CH, Wang CS, Xu ZY, Zhou XM, Wang DJ, Ni LX, Xiao YB, Jiang SL, Zhang GM, Liang GY, Yang SY, Bo P, Zhong QJ, Zhang JB, Zhang X, Zhu YB, Teng X, Zhu P, Huang F, Xiao YM, Cao GQ, Tian H, Xia LM, Lu FL, Liu YQ, Liu DX, Xu H, Yuan Y, Li M, Chang C, Wu XC, Xu Z, Guo P, Bai YJ, Xue WB, Jiang XY, Na ZH, Zeng QY, Cai H, Wang YL, Xiong R, Jin S, Zheng XM, Wu D. [The multicenter study on the registration and follow-up of low anticoagulation therapy for the heart valve operation in China]. ZHONGHUA YI XUE ZA ZHI 2017; 96:1489-94. [PMID: 27266493 DOI: 10.3760/cma.j.issn.0376-2491.2016.19.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To investigate the optimal anticoagulation methods and monitoring strategy for Chinese patients undergoing heart valve replacement, which is potentially quite different from western populations. METHODS In this multicenter prospective cohort study, the anticoagulation and monitoring strategy data was acquired from 25 773 in-hospital patients in 35 medical centers and 20 519 patients in outpatient clinic in 11 medical centers from January 1st, 2011 to December 31th, 2015. RESULTS As for in-hospital patients, mean age of study population was (48.6±11.2) years old; main etiology of valve pathology was rheumatic (87.5%) origin among study cohort; 94.8% of study population received mechanical valve implantation; international normalized ratio (INR) monitoring (in all the study centers) and low-intensity anticoagulation strategy (31 hospitals chose target INR range of 1.5-2.5, and actual values of INR among 89.2% of 100 069 in-hospital monitoring samples were 1.5-2.5), with mean actual INR values of 1.84±0.53, and warfarin dosage of (2.82±0.93) mg/d were widely adopted among the study centers; strategies of in-hospital warfarin administration were similar in all the study centers; complication rates of low-intensity anticoagulation strategy were low in severe hemorrhage (0.02%), thrombosis (0.05%), and thromboembolism (0.05%) events, without anticoagulation-related death.As for 18 974 outpatient clinic patients, the follow-up rate was 92.47%, with a total of 30 012 patient-years (Pty). Anticoagulation-related morbidity and mortality rates were 0.67% and 0.15% Pty; major hemorrhage morbidity and mortality rates were 0.25% and 0.13% Pty; thromboembolism morbidity and mortality rates were 0.45% and 0.03% Pty.The mean dosage of warfarin daily dosage was (2.85±1.23) mg/d and INR value was 1.82±0.57.No significant regional difference in the intensity of anticoagulation therapy was noted during the study. CONCLUSIONS INR can be used as a normalized indicator for intensity of anticoagulation therapy in China.The optimal anticoagulation intensity with INR range from 1.5 to 2.5 is safe and effective for Chinese patients with heart valve replacement, and there is no significant regional difference in the intensity of anticoagulation therapy.
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Guo P, Jiang ZY, Gao KG, Wang L, Yang XF, Hu YJ, Zhang J, Ma XY. Low-level arginine supplementation (0.1%) of wheat-based diets in pregnancy increases the total and live-born litter sizes in gilts. ANIMAL PRODUCTION SCIENCE 2017. [DOI: 10.1071/an15156] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The present study was conducted to test the effects of l-arginine supplementation of wheat-based diets on the pregnancy outcome of gilts. Pregnant gilts (Yorkshire × Landrace, n = 113) were assigned randomly into two groups representing dietary supplementation with 0.1% l-arginine as l-arginine-HCl or 0.17% l-alanine (isonitrogenous control) between Days 30 and 110 of pregnancy. Blood samples were obtained from the ear vein on Days 30, 70 and 90 of pregnancy. Compared with the control, arginine supplementation increased the total number of piglets born by 1.10 per litter and the number of live-born piglets by 1.10 per litter (P < 0.05). Plasma concentration of spermine was higher in gilts fed arginine diets than in those fed control diets at Day 90 of pregnancy (P < 0.05). Dietary arginine supplementation increased plasma concentration of IGF-I of gilts at Day 90 of pregnancy (P < 0.01) and plasma concentrations of arginine, proline and ornithine at Days 70 and 90 of pregnancy (P < 0.05). These results indicated that low-level supplementation (0.1%) of l-arginine–HCl of wheat-based diets beneficially enhances the reproductive performance of gilts and is feasible for use in commercial production.
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Minguella-Canela J, Muguruza A, Lumbierres D, Heredia FJ, Gimeno R, Guo P, Hamilton M, Shastry K, Webb S. Comparison of production strategies and degree of postponement when incorporating additive manufacturing to product supply chains. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.promfg.2017.09.181] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Xiang L, Li J, Chen J, Wang X, Guo P, Fan Y, Zheng S. Prospective cohort study of laparoscopic and open hepatectomy for hepatocellular carcinoma. Br J Surg 2016; 103:1895-1901. [PMID: 27716899 DOI: 10.1002/bjs.10294] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 04/01/2016] [Accepted: 07/15/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND The safety and feasibility of laparoscopic hepatectomy for hepatocellular carcinoma (HCC) with a diameter of 5 cm or less is well recognized. The role of laparoscopy in treating large HCC (5-10 cm) remains controversial. This prospective cohort study was undertaken to assess the short- and long-term outcomes of laparoscopic hepatectomy for large HCC and to compare this approach with open hepatectomy. METHODS Patients with a solitary HCC (diameter 5-10 cm) who underwent open or laparoscopic hepatectomy were enrolled in a prospective observational study from January 2012 to April 2015. Perioperative and follow-up data were analysed. RESULTS Some 128 patients underwent laparoscopic hepatectomy and 207 had an open hepatectomy. One and two perioperative deaths were reported in the laparoscopic and open groups respectively. Laparoscopic hepatectomy was converted to an open procedure in 12 (9·4 per cent) of 128 patients. More patients in the laparoscopic group underwent an anatomical hepatectomy than in the open group (45·3 versus 21·7 per cent; P = 0·001). The postoperative complication rate was 20·3 per cent for the laparoscopic group versus 35·7 per cent for the open group (P = 0·003). Mean(s.d.) duration of hospital stay was 11·4(3·1) and 15·8(7·7) days respectively (P < 0·001). One- and 3-year overall survival rates in the laparoscopic and open groups were 94·4 versus 93·6 per cent (P = 0·875), and 81·4 versus 82·2 per cent (P = 0·802), respectively. One- and 3-year disease-free survival rates were 89·4 versus 88·7 per cent (P = 0·825), and 67·3 versus 66·7 per cent (P = 0·902), respectively. CONCLUSION Laparoscopic hepatectomy is safe and feasible for the treatment of patients with large HCC.
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Zhang L, Wang Z, Guo P, Sun W, Li YM, Sun M, Hua C. Palladium-catalyzed ortho-acylation of N-Nitrosoanilines with α-oxocarboxylic acids: a convenient method to synthesize N-Nitroso ketones and indazoles. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.04.096] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zhang WJ, Guo P, Liu M, Yang BL, Wang JH, Jiang J. Isolation, identification, and optimal cultivation of a marine bacterium antagonistic to Magnaporthe grisea. GENETICS AND MOLECULAR RESEARCH 2016; 15:gmr8646. [PMID: 27323038 DOI: 10.4238/gmr.15028646] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In this paper, a plate confrontation method was used to isolate bacteria antagonistic to the rice blast fungus Magnaporthe grisea from samples collected from China's Dalian Bay. The antagonist strain LM-031 was obtained. We studied this strain's morphological, physiological and biochemical characteristics and analyzed its 16S rDNA sequence. We compared the effects of different culture conditions (type of media, carbon and nitrogen source, incubation temperature and time, and initial pH value) on the inhibitory effect against M. grisea. Strain LM-031 was preliminarily identified as Bacillus pumilus and was found to strongly inhibit M. grisea, especially when grown on BPY medium at an initial pH 7 for 72 h at 30°C. The optimum carbon and nitrogen sources for growth were lactose and peptone, respectively. The most suitable carbon and nitrogen sources for production of active substances were glucose and NH4Cl, respectively. Our results show that development and utilization of B. pumilus LM-031 has great potential for biological control of M. grisea.
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Zhao X, Wang XF, Wang JB, Lu XJ, Zhao YW, Li CB, Wang BH, Wei J, Guo P, Xiao JP, Wang JH, Yang XL. Multicenter study of autoverification methods of hematology analysis. J BIOL REG HOMEOS AG 2016; 30:571-577. [PMID: 27358150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This study was designed to establish and validate a set of autoverification methods for hematology analysis. One thousand and twenty-four samples were selected from Shanghai Ruijin Hospital and 999 from Beijing Hospital, China. False positive, false negative and autoverification pass rates were verified and the rules were then adjusted and confirmed according to the verification results. After confirmation, at least 10,000 sample cases were selected from Shanghai Ruijin Hospital, Beijing Hospital and China Armed Police General Hospital and checked automatically. The differences in the autoverification pass rate and average report delivery time before and after the application of the autoverification methods were compared between the three hospitals. Preliminary validation results showed that the false negative rates of the Shanghai Ruijin Hospital and Beijing Hospital were less than 2%. The false positive rates of these two hospitals were high, close to 18%. After rule adjustment, the false negative rate was basically the same as before adjustment, but the false positive rate declined obviously while the pass rate of autoverification improved significantly. The autoverification pass rates of the three hospitals were 76.4%, 85.1% and 84.2%, respectively. The turnover time (TAT, time from receipt of sample to report of the result) of the three hospitals decreased by 4.1 min, 8.8 min and 10.2 min, respectively. Autoverification systems using a Mindray BC-6800 auto hematology analyzer and labXpert were confirmed as being effective in reducing TAT and enhancing working efficiency on the premise of ensuring low false negative rate.
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Sun M, Wang Z, Wang J, Guo P, Chen X, Li YM. Palladium-catalyzed decarboxylative ortho-arylation of 2-pyridyl sulfoxides with benzoyl peroxides. Org Biomol Chem 2016; 14:10585-10588. [DOI: 10.1039/c6ob02040b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A palladium catalyzed efficient strategy for regio-selective ortho-arylation of sulfoxides with aryl acyl peroxides via decarboxylation has been developed.
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Sun M, Chen X, Zhang L, Sun W, Wang Z, Guo P, Li YM, Yang XJ. Efficient, versatile and practical palladium-catalyzed highly regioselective ortho-halogenation of azoxybenzenes. Org Biomol Chem 2016; 14:323-9. [DOI: 10.1039/c5ob02153g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient and practical strategy of regio-selective ortho-halogenation of azoxybenzenes with NXS in the presence of palladium catalysts has been developed in good to excellent yields.
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Gao Y, Liao XH, Lu L, Wang L, Ma Y, Qin HZ, Yan X, Guo P. Contrast-enhanced transrectal ultrasonography for the detection of diffuse prostate cancer. Clin Radiol 2015; 71:258-64. [PMID: 26738964 DOI: 10.1016/j.crad.2015.11.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 11/11/2015] [Accepted: 11/17/2015] [Indexed: 11/16/2022]
Abstract
AIM To evaluate the diagnostic accuracy of contrast-enhanced transrectal ultrasonography (CE-TRUS) versus baseline TRUS (combination of grey-scale and colour Doppler imaging) for diffuse prostate cancer. MATERIALS AND METHODS Forty-six patients without an obvious focal mass on baseline TRUS (grey-scale and colour Doppler), underwent additional CE-TRUS and TRUS-guided biopsy due to elevated levels of prostate-specific antigen (PSA ≥4 ng/ml) and/or abnormal digital rectal examination (DRE). In all patients, CE-TRUS was performed with intravenous injection of a contrast agent (sulphur hexafluoride microbubble; SonoVue, 2.4 ml) before biopsy. TRUS-guided biopsy targeted suspicious areas detected on CE-TRUS imaging or sampled the outer gland of the normal prostate. The final diagnosis was based on results of the TRUS-guided biopsy. The diagnostic accuracy of baseline TRUS and CE-TRUS for diffuse prostatic lesions was evaluated using receiver operating characteristic (ROC) curve analysis. RESULTS Diffuse prostate cancer was present in 32 (69.5%) patients and absent in 14 (30.5%) patients. Nineteen patients had diffuse prostate cancer that was not detected by baseline TRUS, whereas 15 cases were identified using CE-TRUS. Conversely, five patients had benign prostatic hypertrophy (BPH) that was diagnosed as cancer by CE-TRUS, and two of these patients were diagnosed with BPH by baseline TRUS. The combined sensitivity, specificity, and accuracy were 87.5%, 64.2%, and 80.4%, respectively, for CE-TRUS, and 40.6%, 78.5%, and 52.1%, respectively, for baseline TRUS. The area under the ROC curve (AUC) values for the diagnostic accuracy of baseline CE-TRUS versus TRUS for diffuse prostate cancer differed significantly at 0.904 and 0.667, respectively (Z=4.098, p<0.0001). CONCLUSION CE-TRUS exhibited greater diagnostic accuracy for diffuse prostate cancer than baseline TRUS. CE-TRUS may improve cancer detection over baseline TRUS imaging for the diagnosis of diffuse prostate cancer in patients with an elevated PSA level. CE-TRUS detects diffuse prostate cancer without an obvious focal mass on routine TRUS or clinical examination, and therefore, may help identify patients who do not need a repeat biopsy or who do not need to undergo systematic 12-core invasive sampling biopsies.
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Johannesen L, Vicente J, Mason JW, Erato C, Sanabria C, Waite-Labott K, Hong M, Lin J, Guo P, Mutlib A, Wang J, Crumb WJ, Blinova K, Chan D, Stohlman J, Florian J, Ugander M, Stockbridge N, Strauss DG. Late sodium current block for drug-induced long QT syndrome: Results from a prospective clinical trial. Clin Pharmacol Ther 2015; 99:214-23. [PMID: 26259627 DOI: 10.1002/cpt.205] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 08/05/2015] [Indexed: 12/19/2022]
Abstract
Drug-induced long QT syndrome has resulted in many drugs being withdrawn from the market. At the same time, the current regulatory paradigm for screening new drugs causing long QT syndrome is preventing drugs from reaching the market, sometimes inappropriately. In this study, we report the results of a first-of-a-kind clinical trial studying late sodium (mexiletine and lidocaine) and calcium (diltiazem) current blocking drugs to counteract the effects of hERG potassium channel blocking drugs (dofetilide and moxifloxacin). We demonstrate that both mexiletine and lidocaine substantially reduce heart-rate corrected QT (QTc) prolongation from dofetilide by 20 ms. Furthermore, all QTc shortening occurs in the heart-rate corrected J-Tpeak (J-Tpeak c) interval, the biomarker we identified as a sign of late sodium current block. This clinical trial demonstrates that late sodium blocking drugs can substantially reduce QTc prolongation from hERG potassium channel block and assessment of J-Tpeak c may add value beyond only assessing QTc.
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Abstract
MicroRNAs (miRNA) are small noncoding RNAs that are critical regulators of gene function. In the recent years, miRNAs have been increasingly noted for their capacity to regulate key malignant properties of tumor cells. MicroRNA-128 (miR-128) is a brain-enriched miRNA that is normally involved in the development of the nervous system and in the maintenance of neural physiological functions. In tumorcells, miR-128 expression is dysregulated through a variety of genetic and epigenetic events. Dysregulation: of miR-128 has profound effects on tumorigenesis and maintenance of tumor cells through alterations in cellular proliferation, differentiation, metabolism, and apoptosis. This article will review the latest advances in our understanding of miR-128, specifically in the context of clinical and fundamental cancer biology. Further characterization of miR-128 will likely identify its new roles in cancer biology. The use of miR-128 as a diagnostic and/or therapeutic tool may result in improvements in diagnosis, prognosis, and treatment of numerous cancers.
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Chen SL, Gwee KA, Lee JS, Miwa H, Suzuki H, Guo P, Hao YT, Chen MH. Letter: prompt endoscopy in Asians with uninvestigated dyspepsia - authors' reply. Aliment Pharmacol Ther 2015; 41:793. [PMID: 25781047 DOI: 10.1111/apt.13131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
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Chen SL, Gwee KA, Lee JS, Miwa H, Suzuki H, Guo P, Hao YT, Chen MH. Systematic review with meta-analysis: prompt endoscopy as the initial management strategy for uninvestigated dyspepsia in Asia. Aliment Pharmacol Ther 2015; 41:239-52. [PMID: 25429769 DOI: 10.1111/apt.13028] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 09/04/2014] [Accepted: 10/27/2014] [Indexed: 01/04/2023]
Abstract
BACKGROUND Prompt endoscopy should be considered as an initial strategy for uninvestigated dyspepsia in the background of high prevalence of Helicobacter pylori infection and malignancy. However, with changes of disease patterns and dyspepsia definition, the prevalence of organic lesions at endoscopy in dyspepsia patients and the predictive values of alarm features and age for in malignancy remain unclear in Asian population. AIMS To evaluate the appropriateness of prompt endoscopy as an initial dyspepsia management strategy, we investigated the organic lesion detection rates in Asian dyspepsia patients as well as the diagnostic accuracies of alarm features and age thresholds for malignancy. METHODS Literature was retrieved from MEDLINE, PubMed, Embase, Cochrane Library and CINAHL Plus. The prevalence rates of organic lesions and young cancer patients among dyspeptic patients and the sensitivities, specificities, likelihood ratios and diagnostic odds ratio (DOR) of alarm features and ages were estimated. The summary receiver operating characteristic curve was constructed and the area under the curve (AUC) calculated. Subgroup, sensitivity and meta-regression analyses were performed. RESULTS Of the 18 included studies, 15 reported organic lesion detection rates, and six and five analysed the predictive values of alarm features and ages respectively. The overall malignancy detection rate was 1.3% (95% CI: 0.80-2.10). Among cancer patients, 17.8% (95% CI: 10.90-29.00) were younger than 45 years and 3.0% (95% CI: 2.50-3.50) were younger than 35 years. The diagnostic accuracy of alarm features for predicting malignancy was moderate (DOR: 4.87, 95% CI: 2.72-8.71; AUC = 0.74). The diagnostic accuracy at age >35 years (DOR: 9.41, 95% CI: 7.89-11.21; AUC = 0.82) was better than that at age >45 years (DOR: 3.50, 95% CI: 2.32-5.27; AUC = 0.70). CONCLUSIONS The malignancy detection rate and proportion of young cancer patients were high among Asian dyspepsia patients. Alarm features and age were of limited value for predicting malignancy, and prompt endoscopy should be considered as the initial strategy for dyspepsia in Asian populations. The optimal age threshold for endoscopy screening in Asia might be 35 years.
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Luo W, Li H, Guo P. SU-E-T-338: Ultrastable PRNA 3WJ Nanoparticles as Potential I-125 and C-131 Carriers for Targeted Radiation Therapy. Med Phys 2014. [DOI: 10.1118/1.4888671] [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
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Zhu Z, Zhang J, Liu Y, Chen M, Guo P, Li K. Efficacy and toxicity of external-beam radiation therapy for localised prostate cancer: a network meta-analysis. Br J Cancer 2014; 110:2396-404. [PMID: 24736585 PMCID: PMC4021530 DOI: 10.1038/bjc.2014.197] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 03/17/2014] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Many radiation regimens for treating prostate cancer have been used over the years, but which regimen is optimal for localised or locally advanced prostate cancer lacks consensus. We performed a network meta-analysis to identify the optimal radiation regimen. METHODS We systematically reviewed data from 27 randomised controlled trials and could group seven radiation regimens as follows: low- and high-dose radiation therapy (LDRT and HDRT), LDRT+ short- or long-term androgen deprivation therapy (LDRT+SADT and LDRT+LADT), HDRT+SADT, hypofractionated radiotherapy (HFRT), and HFRT+SADT. The main outcomes were overall mortality (OM), prostate-specific antigen (PSA) failure, cancer-specific mortality, and adverse events. RESULTS For the network meta-analysis of 27 trials, LDRT+LADT and LDRT+SADT were associated with decreased risk of OM as compared with LDRT alone as was LDRT+LADT compared with HDRT. Apart from HFRT, all other treatments were associated with decreased risk of PSA failure as compared with LDRT. HFRT+SADT was associated with decreased risk of cancer-specific mortality as compared with HFRT, LDRT+SADT, HDRT, and LDRT. CONCLUSIONS HFRT+SADT therapy might be the most efficacious treatment but with worst toxicity for localised or locally advanced prostate cancer, and HDRT showed excellent efficacy but more adverse events.
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Zheng XL, Guo P, Chen WJ, Zheng JM, Ren ZY. Magnetic Superatoms Based Spintronics: A DFT Study. J CLUST SCI 2014. [DOI: 10.1007/s10876-014-0702-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Gaffar I, Xiao X, El-Gohary Y, Wiersch J, Prasadan K, Guo P, Shiota C, Gittes G. Regulation of β Cell Proliferation by Targeting SMAD2. J Surg Res 2014. [DOI: 10.1016/j.jss.2013.11.868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Guo P. Suppression of interferon-mediated antiviral immunity by hepatitis B virus: an overview of research progress. Scand J Immunol 2013; 78:230-7. [PMID: 23790137 DOI: 10.1111/sji.12086] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 06/04/2013] [Indexed: 01/30/2023]
Abstract
Interferon (IFN)-α is an indispensable drug for hepatitis B treatment in clinical settings. However, hepatitis B virus (HBV) can attenuate IFN-mediated antiviral responses to avoid being inhibited or cleared. Much progress has been made in exploring how the IFN-induced anti-HBV effect is inhibited. This review examines and summarizes new advances regarding the molecular mechanism underlying the HBV-induced suppression of type I IFN-mediated antiviral immunity.
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Gu JJ, Huang GH, Guo P, Shen N. Interval multistage joint-probabilistic integer programming approach for water resources allocation and management. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2013; 128:615-624. [PMID: 23845954 DOI: 10.1016/j.jenvman.2013.06.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Revised: 06/06/2013] [Accepted: 06/16/2013] [Indexed: 06/02/2023]
Abstract
In this study, an interval multistage joint-probabilistic integer programming method was developed to address certain problems in water resource regulation. This method effectively deals with data in the form of intervals and probability distribution. It can also process uncertain data in the form of joint probabilities. The proposed method can also reflect the linkage and dynamic variability between particular stages in multi-stage planning. Sensitivity analysis on moderate violations and security constraints showed that the degree of constraint violation was closely linked to the final benefits of the system. The developed method was applied in the case study of the joint-operation of the Tianzhuang and Bashan Reservoirs in Huaihe River, China. In this case study, the proposed method can deal with the water shortage problems downstream and the distribution problems caused by excess water in the reservoir. It can also guarantee the optimization of long-term water usage of both Reservoirs and the river downstream.
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Roh-Johnson M, Bravo-Cordero JJ, Patsialou A, Sharma VP, Guo P, Liu H, Hodgson L, Condeelis J. Macrophage contact induces RhoA GTPase signaling to trigger tumor cell intravasation. Oncogene 2013; 33:4203-12. [PMID: 24056963 PMCID: PMC3962803 DOI: 10.1038/onc.2013.377] [Citation(s) in RCA: 139] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 07/01/2013] [Accepted: 07/16/2013] [Indexed: 12/23/2022]
Abstract
Most cancer patients die as a result of metastasis, thus it is important to understand the molecular mechanisms of dissemination, including intra- and extravasation. Although the mechanisms of extravasation have been vastly studied in vitro and in vivo, the process of intravasation is still unclear. Furthermore, how cells in the tumor microenvironment facilitate tumor cell intravasation is still unknown. Using high-resolution imaging, we found that macrophages enhance tumor cell intravasation upon physical contact. Macrophage and tumor cell contact induce RhoA activity in tumor cells, triggering the formation of actin-rich degradative protrusions called invadopodia, enabling tumor cells to degrade and break through matrix barriers during tumor cell transendothelial migration. Interestingly, we show that macrophage-induced invadopodium formation and tumor cell intravasation also occur in patient-derived tumor cells and in vivo models, revealing a conserved mechanism of tumor cell intravasation. Our results illustrate a novel heterotypic cell contact mediated signaling role for RhoA, as well as yield mechanistic insight into the ability of cells within the tumor microenvironment to facilitate steps of the metastatic cascade.
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Aelion Brauer A, Kedem A, Lis R, Guo P, Rafii S, Rosenwaks Z. Isolation and characterization of ovarian endothelial cells (ECs): a novel tool in understanding the role of ovarian endothelial cells in reproductive biology. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.1868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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76
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Sun X, Song T, Liu Z, Quan W, Tian J, Guo P. Ab initio prediction of the first and second pressure derivatives of isothermal bulk modulus for the high-pressure rocksalt phase of ZnO. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.01.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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77
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El-Gohary Y, Xiao X, Guo P, Wiersch J, Prasadan K, Shiota C, Gittes G. Pancreatic Duct Glands: Are They the Missing Pancreas Specific Stem Cells. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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78
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Zhang XM, Lv YG, Chen GB, Zou Y, Lin CW, Yang L, Guo P, Lin MP. Effect of mild hypothermia on breast cancer cells adhesion and migration. Biosci Trends 2012; 6:313-324. [PMID: 23337791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
To explore the effect of mild hypothermia (35ºC) on breast cancer cells adhesion to vascular endothelial cells, a parallel plant flow chamber was used to observe the adhesion of human breast cancer cells MDA-MB-231 to endothelial cells Eahy926 under physiological flow at 35ºC and 37ºC, as well as the role of intercellular adhesion molecule 1 (ICAM-1) in this process. Further, the effect of mild hypothermia (35ºC) on migration of MDA-MB-231 was also studied. Our results show that mild hypothermia can inhibit the adhesion of tumor cells to endothelial cells and ICAM-1 plays an important role in this process. However, mild hypothermia inhibits breast cancer cell adhesion in a way independent on the change of ICAM-1 expression under our experimental conditions. Mild hypothermia can weaken the chemotaxis of breast cancer cells while it has no obvious effect on unidirectonal migration capacity. These results suggest that mild hypothermia could be used as a potentially adjunct treatment combined with surgery to decrease tumor cell adhesion and migration.
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Abstract
BACKGROUND Cancer deaths of China with the world population nearly a quarter will have a severe impact on global cancer trend and burden. The study aims to provide a comprehensive overview of long-term trends in cancer mortality in China. MATERIALS AND METHODS We used joinpoint analysis to detect changes in trends and generalized additive models to study birth cohort effect of risk factors between 1987 and 2009. RESULTS Mortality of all cancers declined steadily in urban areas, but not in rural areas. Decreasing mortality from cancers of the stomach, esophagus, nasopharynx, and cervix uteri was observed, while lung and female breast cancer mortality increased. Mortality from leukemia remained relatively stable, and cancer of liver, colorectal, and bladder had different trends between the rural and urban areas. Generational risks peaked in the cohorts born around 1925-1930 and tended to decline in successive cohorts for most cancers except for leukemia, whose relative risks were rising in the very recent cohorts. CONCLUSION The observed trends primarily reflect dramatic changes in socioeconomic development and lifestyle in China over the past two decades, and mortality from cancers of lung and female breast still represents a major public health priority for the government.
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El-Gohary Y, Sims-Lucas S, Lath N, Tulachan S, Guo P, Xiao X, Welsh C, Paredes J, Wiersch J, Prasadan K, Shiota C, Gittes GK. Three-dimensional analysis of the islet vasculature. Anat Rec (Hoboken) 2012; 295:1473-81. [PMID: 22807267 DOI: 10.1002/ar.22530] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Accepted: 06/18/2012] [Indexed: 11/05/2022]
Abstract
The pancreatic islets of Langerhans are highly vascularized structures scattered throughout the pancreas that contain a capillary network 5-10 times denser than that of the exocrine pancreas. A simple method for three-dimensional (3D) analysis of this intricate intraislet vasculature has been difficult because of the intrinsic opacity of the pancreas. We developed a whole-mount imaging technique that allows relatively easy visualization of the islet vasculature. In combination with confocal microscopy and the use of 3D imaging software, we were able to readily reconstruct the 3D architecture of an islet, allowing delineation of the islet volume, length of the intraislet vessels, and the number of vessel branch-points. This technique allows for straightforward 3D image analysis that may help toward understanding islet function.
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81
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Geier MS, Torok VA, Guo P, Allison GE, Boulianne M, Janardhana V, Bean AGD, Hughes RJ. The effects of lactoferrin on the intestinal environment of broiler chickens. Br Poult Sci 2012; 52:564-72. [PMID: 22029783 DOI: 10.1080/00071668.2011.607429] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
The influence of in-feed lactoferrin (Lf) on bird production, intestinal microbiota, mucosal immune system and gut microarchitecture was assessed in male Cobb 500 broiler chickens. Birds were given one of four diets from day of hatch: Control (basal diet with no additives), ZnB (basal diet + 50 mg/kg zinc bacitracin), Lf 250 mg/kg (basal diet + 250 mg/kg Lf) and Lf 500 mg/kg (basal diet + 500 mg/kg Lf); n = 24 birds/treatment. An apparent metabolisable energy study was performed between d 25-32. Lf did not affect growth rate or feed conversion in the period 0-21 d of age, nor performance or energy metabolism during the 7 d metabolism experiment which commenced at 25 d of age.The profiles of caecal microbial communities were significantly different in birds given ZnB compared with birds given a diet with no additives, or supplemented with 250 mg/kg Lf. Birds given 250 mg/kg Lf also had a different microbial profile compared with birds given 500 mg/kg Lf. In comparison to control birds, Lf treated birds showed some differences in the T cell proportions in caecal tonsil and spleen. No differences in ileal villus height, crypt depth or goblet cell proportions were observed amongst dietary treatments. Whilst Lf had little effect on the measured parameters, the use of an integrated approach to study the influence of novel feed additives may facilitate a greater understanding of the relationships between nutrition, gut health and bird performance.
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82
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El-Gohary Y, Tulachan S, Prasadan K, Shiota C, Guo P, Gittes G. Pancreatic Ducts and Alpha Cells Contribute to New Beta Cells Under Normal Physiological Conditions and During Pancreatic Regeneration. J Surg Res 2012. [DOI: 10.1016/j.jss.2011.11.566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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83
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Jia Y, Wang C, Zhao G, Guo P, Tian X. The possibility of using cyanobacterial bloom materials as a medium for white rot fungi. Lett Appl Microbiol 2011; 54:96-101. [DOI: 10.1111/j.1472-765x.2011.03178.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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84
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Zhao B, Tan Y, Li Y, Guo P, Schwartz L. SU-E-T-40: Exploring the Reproducibility of Tumor Volumes Measured by Radiologist, Computer-Aided Radiologist and Computer Alone. Med Phys 2011. [DOI: 10.1118/1.3611991] [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
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85
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Guo P, Beaumont L, Baldwin K, Jones S, Taylor B. SU-E-J-174: Quantitative Evaluation of Setup Error and Interfraction Prostate Motion Using Tomotherapy MVCT. Med Phys 2011. [DOI: 10.1118/1.3611942] [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
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86
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Witzig TE, Vose JM, Zinzani PL, Reeder CB, Buckstein R, Polikoff JA, Bouabdallah R, Haioun C, Tilly H, Guo P, Pietronigro D, Ervin-Haynes AL, Czuczman MS. An international phase II trial of single-agent lenalidomide for relapsed or refractory aggressive B-cell non-Hodgkin's lymphoma. Ann Oncol 2011; 22:1622-1627. [PMID: 21228334 DOI: 10.1093/annonc/mdq626] [Citation(s) in RCA: 325] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Lenalidomide is an immunomodulatory agent with antitumor activity in B-cell malignancies. This phase II trial aimed to demonstrate the safety and efficacy of lenalidomide in patients with relapsed or refractory diffuse large B-cell lymphoma (DLBCL), mantle cell lymphoma (MCL), follicular grade 3 lymphoma (FL-III), or transformed lymphoma (TL). METHODS Patients received oral lenalidomide 25 mg on days 1-21 every 28 days as tolerated or until progression. The primary end point was overall response rate (ORR). RESULTS Two hundred and seventeen patients enrolled and received lenalidomide. The ORR was 35% (77/217), with 13% (29/217) complete remission (CR), 22% (48/217) partial remission, and 21% (45/217) with stable disease. The ORR for DLBCL was 28% (30/108), 42% (24/57) for MCL, 42% (8/19) for FL-III, and 45% (15/33) for TL. Median progression-free survival for all 217 patients was 3.7 months [95% confidence interval (CI) 2.7-5.1]. For 77 responders, the median response duration lasted 10.6 months (95% CI 7.0-NR). Median response duration was not reached in 29 patients who achieved a CR and in responding patients with FL-III or MCL. The most common adverse event was myelosuppression with grade 4 neutropenia and thrombocytopenia in 17% and 6%, respectively. CONCLUSION Lenalidomide is well tolerated and produces durable responses in patients with relapsed or refractory aggressive non-Hodgkin's lymphoma.
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Guo P, Wang Y, Wang L, Wang J. Erectile Dysfunction in Living Donor Kidney Transplant Recipients Associated With Chronic Hepatitis B Infection. Transplant Proc 2010; 42:2556-9. [DOI: 10.1016/j.transproceed.2010.04.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2009] [Revised: 03/09/2010] [Accepted: 04/16/2010] [Indexed: 10/19/2022]
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88
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Cao B, Ren LL, Zhao F, Gonzalez R, Song SF, Bai L, Yin YD, Zhang YY, Liu YM, Guo P, Zhang JZ, Wang JW, Wang C. Viral and Mycoplasma pneumoniae community-acquired pneumonia and novel clinical outcome evaluation in ambulatory adult patients in China. Eur J Clin Microbiol Infect Dis 2010; 29:1443-8. [PMID: 20623362 PMCID: PMC7088295 DOI: 10.1007/s10096-010-1003-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2010] [Accepted: 06/10/2010] [Indexed: 11/26/2022]
Abstract
Few studies have addressed the etiology and clinical outcomes of community-acquired pneumonia (CAP) treated in an ambulatory setting. We investigated the etiology by the culture of Mycoplasma pneumoniae, urine antigen testing of Streptococcus pneumoniae and Legionella pneumoniae, and DNA or RNA determination of eight kinds of respiratory virus DNA or RNA. An etiological diagnosis was made in 51.8% of 197 patients. The most common pathogens were M. pneumoniae (29.4%) followed by influenza virus A, parainfluenza virus, adenovirus, human metapneumovirus (9.6%), and S. pneumoniae (4.1%). Patients with mycoplasma infections were younger, less likely to have comorbidities, and less likely to have adequate sputum for gram stain and culture. Patients with viral infections were older and more likely to have poorly defined nodules on chest X-ray (CXR) or computed tomography (CT) scan. Among patients infected with M. pneumoniae, those with quinolones as initial prescriptions had shorter duration of fever after the initiation of antibiotics than patients with β-lactams, macrolides, or β-lactams + macrolides (p < 0.05). This study suggests that M. pneumoniae and respiratory viruses were the most frequent pathogens found in ambulatory adult CAP patients and quinolones were better than β-lactams, macrolides, or β-lactams + macrolides in the resolution of fever of M. pneumoniae pneumonia.
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MESH Headings
- Adult
- Age Factors
- Anti-Bacterial Agents/pharmacology
- Anti-Bacterial Agents/therapeutic use
- China/epidemiology
- Community-Acquired Infections/drug therapy
- Community-Acquired Infections/epidemiology
- Community-Acquired Infections/microbiology
- Community-Acquired Infections/virology
- Female
- Humans
- Legionella pneumophila/isolation & purification
- Macrolides/therapeutic use
- Male
- Middle Aged
- Mycoplasma pneumoniae/isolation & purification
- Pneumonia, Bacterial/diagnosis
- Pneumonia, Bacterial/drug therapy
- Pneumonia, Bacterial/epidemiology
- Pneumonia, Bacterial/microbiology
- Pneumonia, Mycoplasma/diagnosis
- Pneumonia, Mycoplasma/drug therapy
- Pneumonia, Mycoplasma/epidemiology
- Pneumonia, Mycoplasma/microbiology
- Pneumonia, Viral/diagnosis
- Pneumonia, Viral/epidemiology
- Pneumonia, Viral/virology
- Quinolones/therapeutic use
- Sputum/microbiology
- Streptococcus pneumoniae/isolation & purification
- Treatment Outcome
- beta-Lactams/therapeutic use
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Cao B, Ren LL, Zhao F, Gonzalez R, Bai L, Song SF, Yin Y, Zhang YY, Liu YM, Guo P, Zhang JZ, Wang JW, Wang C. PL-004 Viral and Mycoplasma pneumoniae community acquired pneumonia and novel clinical outcome evaluation in ambulatory adult patients. Int J Infect Dis 2010. [DOI: 10.1016/s1201-9712(10)60021-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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90
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Cui N, Cao B, Liu YM, Liang LR, Gu L, Song SF, Guo P, Yin YD, Li F, Li BB, Su LL, Yang CX, Wang CL. OL-050 Clinical and economic impact of imipenem-resistant Acinetobacter baumannii in a teaching hospital in China. Int J Infect Dis 2010. [DOI: 10.1016/s1201-9712(10)60062-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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91
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Guo P, Huang GH. Interval-parameter semi-infinite fuzzy-stochastic mixed-integer programming approach for environmental management under multiple uncertainties. WASTE MANAGEMENT (NEW YORK, N.Y.) 2010; 30:521-531. [PMID: 19854040 DOI: 10.1016/j.wasman.2009.09.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2009] [Revised: 09/08/2009] [Accepted: 09/09/2009] [Indexed: 05/28/2023]
Abstract
In this study, an interval-parameter semi-infinite fuzzy-chance-constrained mixed-integer linear programming (ISIFCIP) approach is developed for supporting long-term planning of waste-management systems under multiple uncertainties in the City of Regina, Canada. The method improves upon the existing interval-parameter semi-infinite programming (ISIP) and fuzzy-chance-constrained programming (FCCP) by incorporating uncertainties expressed as dual uncertainties of functional intervals and multiple uncertainties of distributions with fuzzy-interval admissible probability of violating constraint within a general optimization framework. The binary-variable solutions represent the decisions of waste-management-facility expansion, and the continuous ones are related to decisions of waste-flow allocation. The interval solutions can help decision-makers to obtain multiple decision alternatives, as well as provide bases for further analyses of tradeoffs between waste-management cost and system-failure risk. In the application to the City of Regina, Canada, two scenarios are considered. In Scenario 1, the City's waste-management practices would be based on the existing policy over the next 25 years. The total diversion rate for the residential waste would be approximately 14%. Scenario 2 is associated with a policy for waste minimization and diversion, where 35% diversion of residential waste should be achieved within 15 years, and 50% diversion over 25 years. In this scenario, not only landfill would be expanded, but also CF and MRF would be expanded. Through the scenario analyses, useful decision support for the City's solid-waste managers and decision-makers has been generated. Three special characteristics of the proposed method make it unique compared with other optimization techniques that deal with uncertainties. Firstly, it is useful for tackling multiple uncertainties expressed as intervals, functional intervals, probability distributions, fuzzy sets, and their combinations; secondly, it has capability in addressing the temporal variations of the functional intervals; thirdly, it can facilitate dynamic analysis for decisions of facility-expansion planning and waste-flow allocation within a multi-facility, multi-period and multi-option context.
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92
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Wang Q, Su M, Zhu W, Li X, Jia Y, Guo P, Chen Z, Jiang W, Tian X. Growth inhibition of Microcystis aeruginosa by white-rot fungus Lopharia spadicea. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2010; 62:317-323. [PMID: 20651435 DOI: 10.2166/wst.2010.214] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Harmful cyanobacterial blooms cause water deterioration and threaten human health. It is necessary to remove harmful cyanobacteria with useful methods. A bio-treatment may be one of the best ways to do this. A strain of specific white-rot fungus, Lopharia spadicea, with algicidal ability was isolated. Its algicidal ability on algae under various conditions was determined using three main influence factors: initial chlorophyll-a content, initial pH, and algal cell mixture. The result showed that the chlorophyll-a content of Microcystis aeruginosa FACHB-912, Oocystis borgei FACHB-1108, and Microcystis flos-aquae FACHB-1028 decreased from 798+/-13, 756+/-40, and 773+/-24 microg/L to 0 within 39 h. L. spadicea could also remove more than 95% chlorophyll-a when initial chlorophyll-a content increased from 397+/-13 to 2,132+/-4 microg/L. Moreover, the strain has great removal ability under a broad initial pH range of 5.5 to 9.5. The chlorophyll-a content of the three algal strain mixtures decreased from about 672+/-23 microg/L to 0 within 45 h. After superoxide dismutase (SOD) and malondialdehyde (MAD) were assessed in a co-culture of L. spadicea, it was observed that an increase in MAD content was correlated with the decrease in chlorophyll-a content of M. aeruginosa FACHB-912. This result suggested that the algae was not only greatly inhibited but also severely damaged by the fungus.
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Guo P, Malhotra A, Creer S, Pook CE. An evaluation of the systematic value of skull morphology in the Trimeresurusradiation (Serpentes: Viperidae: Crotalinae) of Asian pitvipers. J ZOOL SYST EVOL RES 2009. [DOI: 10.1111/j.1439-0469.2009.00525.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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94
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Guo P, Huang GH. Inexact fuzzy-stochastic mixed-integer programming approach for long-term planning of waste management--Part A: methodology. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2009; 91:461-470. [PMID: 19800164 DOI: 10.1016/j.jenvman.2009.09.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2008] [Revised: 08/18/2009] [Accepted: 09/01/2009] [Indexed: 05/28/2023]
Abstract
In this study, an inexact fuzzy chance-constrained two-stage mixed-integer linear programming (IFCTIP) approach is proposed for supporting long-term planning of waste-management systems under multiple uncertainties in the City of Regina, Canada. The method improves upon the existing inexact two-stage programming and mixed-integer linear programming techniques by incorporating uncertainties expressed as multiple uncertainties of intervals and dual probability distributions within a general optimization framework. The developed method can provide an effective linkage between the predefined environmental policies and the associated economic implications. Four special characteristics of the proposed method make it unique compared with other optimization techniques that deal with uncertainties. Firstly, it provides a linkage to predefined policies that have to be respected when a modeling effort is undertaken; secondly, it is useful for tackling uncertainties presented as intervals, probabilities, fuzzy sets and their incorporation; thirdly, it facilitates dynamic analysis for decisions of facility-expansion planning and waste-flow allocation within a multi-facility, multi-period, multi-level, and multi-option context; fourthly, the penalties are exercised with recourse against any infeasibility, which permits in-depth analyses of various policy scenarios that are associated with different levels of economic consequences when the promised solid waste-generation rates are violated. In a companion paper, the developed method is applied to a real case for the long-term planning of waste management in the City of Regina, Canada.
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95
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Guo P, Huang GH. Inexact fuzzy-stochastic mixed integer programming approach for long-term planning of waste management---Part B: case study. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2009; 91:441-460. [PMID: 19818549 DOI: 10.1016/j.jenvman.2009.09.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2008] [Revised: 08/18/2009] [Accepted: 09/01/2009] [Indexed: 05/28/2023]
Abstract
In this study, a solid waste decision-support system was developed for the long-term planning of waste management in the City of Regina, Canada. Interactions among various system components, objectives, and constraints will be analyzed. Issues concerning planning for cost-effective diversion and prolongation of the landfill will be addressed. Decisions of system-capacity expansion and waste allocation within a multi-facility, multi-option, and multi-period context will be obtained. The obtained results would provide useful information and decision-support for the City's solid waste management and planning. In the application, four scenarios are considered. Through the above scenario analyses under different waste-management policies, useful decision support for the City's solid waste managers and decision makers was generated. Analyses for the effects of varied policies (for allowable waste flows to different facilities) under 35 and 50% diversion goals were also undertaken. Tradeoffs among system cost and constraint-violation risk were analyzed. Generally, a policy with lower allowable waste-flow levels corresponded to a lower system cost under advantageous conditions but, at the same time, a higher penalty when such allowances were violated. A policy with higher allowable flow levels corresponded to a higher cost under disadvantageous conditions. The modeling results were useful for (i) scheduling adequate time and capacity for long-term planning of the facility development and/or expansion in the city's waste management system, (ii) adjusting of the existing waste flow allocation patterns to satisfy the city's diversion goal, and (iii) generating of desired policies for managing the city's waste generation, collection and disposal.
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96
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Wang A, Guo P, Sun Z, Xu H. Clinicopathological Variables Associated with Lymph Node Metastasis and Prognostic Factors in pT2 Gastric Cancer. J Int Med Res 2009; 37:359-66. [PMID: 19383229 DOI: 10.1177/147323000903700210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This retrospective study investigated the clinicopathological variables associated with lymph node metastasis and prognosis in 325 patients with pT2 gastric cancer in order to set out a foundation for the surgical management of this condition. Univariate and multivariate analyses identified factors that were predictive of lymph node metastasis. Cox regression analysis evaluated the effect of prognostic factors on survival. Tumour location, maximum tumour diameter, lymphatic invasion and total retrieved lymph nodes (tLN) were revealed as independent factors for lymph node metastasis in pT2a gastric cancer, whereas histological type, lymphatic invasion and tLN were associated with lymph node metastasis in patients with pT2b gastric cancer. Maximum tumour diameter, lymphatic invasion and metastatic lymph node (mLN) ratio, but not tLN, were independent prognostic factors in pT2a cancer. Maximum tumour diameter and mLN ratio, but not tLN, were independent prognostic factors in pT2b cancer. Overall, it is concluded that maximum tumour diameter and mLN ratio are important prognostic factors in pT2 gastric cancer.
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97
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James LP, Zhao B, Moskowitz CS, Riely GJ, Miller VA, Guo P, Ginsberg MS, Kris MG, Schwartz LH. Reproducibility of computed tomography (CT) measurements of lung cancer. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.8002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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98
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Lee S, Murray J, Guo P, Luo C, Harrington J. Three Field Breast Treatment With Block or Multi-Leaf Collimators (MLCs) With 52 and 120 Leaves. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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