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Mu GC, Luo YJ, Chen JQ. Construction of an autophagy-related eleven long noncoding RNA signature to predict the outcomes, immune cell infiltration, and immunotherapy response in patients with gastric cancer. J Physiol Pharmacol 2023; 74. [PMID: 37661182 DOI: 10.26402/jpp.2023.3.05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 06/30/2023] [Indexed: 09/05/2023]
Abstract
Long noncoding RNAs (LncRNAs) may be involved in the occurrence, development, and drug resistance of gastric cancer (GC) by regulating autophagy. This study aims to establish an autophagy-related LncRNA (ARL) signature (ARLSig) and explore its immunogenomic implications in patients with GC. The RNA sequencing and clinical data of patients with GC from The Cancer Genome Atlas database, and autophagy genes from the Human Autophagy Database were extracted. The co-expression and Cox regression analyses were performed to establish a prognostic ARLSig. Further, the differences in clinicopathology, immune microenvironment, immune function, and response to immunotherapy between the risk groups were explored by several algorithms. A prognostic risk model consisting of 11 ARLs was constructed. The clinical correlation analysis between the ARLSig and clinicopathological factors indicated that the ARLSig was correlated with the comprehensive, T, and N stages (all P<0.05). Further, a nomogram including the ARLSig and clinical factors suggested it had a powerful predictive value for survival, with a higher prediction efficiency for 1-, 3-, and 5-year survival than other clinicopathological factors. Finally, the immune-related analysis between the two risk groups showed that the high-risk group had significantly higher infiltration proportions of natural killer cells resting, monocytes, M2 macrophages, and dendritic cells resting, as well as higher expression of 25 immune checkpoint genes. In addition, the immunotherapy response prediction by the tracking of indels by decomposition algorithm showed the low-risk group was more sensitive to immune checkpoint inhibitor therapy. The ARLSig consisting of 11 ARLs in GC showed highly efficient predictive value for survival of patients with GC and might provide novel targets for their individualized immunotherapy.
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Affiliation(s)
- G C Mu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Nanning, China
- Guangxi Key Laboratory of Enhanced Recovery after Surgery for Gastrointestinal Cancer, Guangxi Medical University, Nanning, China
| | - Y J Luo
- Graduate School of Guangxi Medical University, Guangxi Medical University, Nanning, China
| | - J Q Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Nanning, China.
- Guangxi Key Laboratory of Enhanced Recovery after Surgery for Gastrointestinal Cancer, Guangxi Medical University, Nanning, China
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2
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Geng F, Lu GF, Luo YJ, Dominguez S, Kong DY, Shen LH, Luo XM, Yang X, Hu M, Lai WS, Jiang ZS, Chen YS. The emerging role of the MiR-1272-ADAM9-CDCP1 signaling pathway in the progression of glioma. Aging (Albany NY) 2020; 13:894-909. [PMID: 33260155 PMCID: PMC7835014 DOI: 10.18632/aging.202196] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 10/05/2020] [Indexed: 02/07/2023]
Abstract
Glioma is a primary, malignant, and aggressive brain tumor in adults. To develop new therapeutic strategies for glioma, we must determine its underlying mechanisms. In the present study, we aimed to investigate the potential role of miR-1272-ADAM9-CDCP1 signaling in the progression of glioma. We found that ectopic expression of miR-1272 produced significant inhibitory effects on cell proliferation and migration and was associated with cell cycle G0/G1 arrest in A172 and SHG44 glioma cells. Using the luciferase reporter assay, we identified ADAM9 as a target of miR-1272. The expression of ADAM9 was markedly decreased or increased after overexpression or inhibition, respectively, of miR-1272 in glioma cells. Moreover, overexpression of ADAM9 reversed the inhibitory effects of miR-1272 on glioma cell progression. Furthermore, CDCP1 served as a potential downstream molecule of miR-1272/ADAM9 signaling in glioma and promoted the proliferation and migration of glioma. Results derived from clinical samples and online databases confirmed correlations between the expression of ADAM9 and CDCP1 and both the severity and prognosis of glioma. In conclusion, these results suggest that miR-1272 and CDCP1 may act as novel regulators in glioma. The miR-1272/ADAM9/CDCP1 pathway may serve as a potential candidate pathway for the prevention of glioma.
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Affiliation(s)
- Fei Geng
- Department of Physiology, Zunyi Medical University, Zunyi, China
| | - Gui-Feng Lu
- Department of Pathophysiology, Zunyi Medical University, Zunyi, China
| | - Yu-Jun Luo
- Rehabilitation Department, Hubei Provincial Hospital of Traditional Chinese Medicine, Hubei Province Academy of Traditional Chinese Medicine, Wuhan, China
| | - Sky Dominguez
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 606011, USA
| | - De-Ying Kong
- Department of Physiology, Zunyi Medical University, Zunyi, China
| | - Lian-Hua Shen
- Department of Pathophysiology, Zunyi Medical University, Zunyi, China
| | - Xiao-Mei Luo
- Department of Physiology, Zunyi Medical University, Zunyi, China
| | - Xin Yang
- Department of Physiology, Zunyi Medical University, Zunyi, China
| | - Min Hu
- Department of Physiology, Zunyi Medical University, Zunyi, China
| | - Wen-Shan Lai
- Department of Physiology, Zunyi Medical University, Zunyi, China
| | - Zhi-Shui Jiang
- Department of Physiology, Zunyi Medical University, Zunyi, China
| | - Yuan-Shou Chen
- Department of Physiology, Zunyi Medical University, Zunyi, China
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Luo YJ, Lo CC, Tsai CY, Lin YT, Hsu HM, Kuan YC, Liu WT. 2 The association between obstructive sleep apnea severity and cognition in older people. J Neurol Neurosurg Psychiatry 2020. [DOI: 10.1136/jnnp-2020-bnpa.20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Relationship between obstructive sleep apnea syndrome (OSAS) and dementia has been investigated in recent years. However, the effects of hypoxia during sleep timeon dementia remain unclear. The objective of this study is to associate the score of mini-mental state examination (MMSE) with OSAS. In this study, 67 patients whom were more than 50 years old and have been done for MMSE test and diagnosed with OSAS in sleep center in Taipei from 2015 to 2018. Four levels of OSAS severity were classified by the apnea and hypopnea index (AHI), according to the American Academy of Sleep Medicine (AASM) guideline. Subjects with MMSE scores above 25 and below 25 were served respectively as case group and control group. Logistic regression analyses were used to examine the associations. The average AHI were 28.48 times per hour for case group and 17.93 times per hour for control group. The AHI had a 1.03 fold higher odds ratio (95% CI=0.99 ~ 1.07, p=0.06) for lower score group compared with higher score group. The mean sleep efficiency were 57.8% in lower score group, while higher score group had an average sleep efficiency of 70.3%. Furthermore, sleep efficiency, total sleep time, the ratio of wake to total time in bed as well as the ratio of wake to sleep period time in case group were significant lower than the control group. We observe the associations between MMSE score and some parameters of polysomnography. The subjects with high severity OSAS, insufficient sleep efficacy, longer awake duration and shorter sleep duration could lead to cognitive impairment.
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Luo YJ, Wen XY, Ni XL, Xiao XL. [Efficacy and safety of Xiyanping injection combined with azithromycin in treating mycoplasma pneumonia of children: Meta-analysis]. Zhongguo Zhong Yao Za Zhi 2019; 43:2153-2161. [PMID: 29933686 DOI: 10.19540/j.cnki.cjcmm.2018.0068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Indexed: 11/18/2022]
Abstract
To systemically evaluate the safety and efficacy of Xiyanping injection combined with azithromycin in the treatment of mycoplasmal pneumonia in children. PubMed, Wanfang Data, CNKI, VIP and CBM were used to search for the clinical randomized controlled trials on Xiyanping injection combined with azithromycin in the treatment of mycoplasmal pneumonia in children from database establishment to July, 2017. The papers were screened according to the established inclusion and exclusion criteria, and then the quality of the included studies was evaluated to extract valid data for Meta-analysis by using Revman 5.3 software. A total of 31 clinical randomized controlled trials were included, involving 2 881 patients. Meta-analysis showed that as compared with azithromycin alone, the combination of azithromycin with azithromycin had obvious advantages in the total effective rate(OR=5.42,95%CI[3.98,7.38],P<0.000 01), fever clearance time(MD=-1.29,95%CI[-1.51,-1.08],P<0.000 01), cough disappearance time (MD=-1.72,95%CI[-1.99,-1.46],P<0.000 01), lung wet rales disappearance time(MD=-1.51,95%CI[-1.88,-1.14],P<0.000 01), chest X-ray recovery time(MD=-2.72,95%CI[-3.82,-1.63],P<0.000 01), shortening the hospital stay(MD=-1.88,95%CI[-2.26,-1.50],P<0.000 01), reducing the incidence of adverse reactions(MD=0.51,95%CI[0.33,0.79],P=0.002), and other aspects, with statistically significant difference. Based on the existing evidences, Xiyanping injection combined with azithromycin in the treatment of mycoplasmal pneumonia in children can significantly improve the overall clinical efficiency, shorten the hospital stay and reduce the incidence of adverse reactions. However, the clinical trials of existing small randomized controlled trials have low quality of methodology and require a large sample of high quality clinical trials for further validation.
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Affiliation(s)
- Yu-Jun Luo
- Department of Pediatrics, Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Traditional Chinese Medicine), Guangzhou 510120, China
| | - Xiao-Ying Wen
- Department of Pediatrics, Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Traditional Chinese Medicine), Guangzhou 510120, China
| | - Xiao-Liang Ni
- Department of Pediatrics, Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Traditional Chinese Medicine), Guangzhou 510120, China
| | - Xiao-Lan Xiao
- Department of Pediatrics, Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Traditional Chinese Medicine), Guangzhou 510120, China
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Dai ZF, Zhao TQ, Yin YG, She JP, Wu L, Tai C, Sun JY, Luo YJ. [Photolysis Mechanism of p-Nitrophenol by Nitrocellulose Membrane in Aqueous Solution]. Huan Jing Ke Xue 2019; 40:685-692. [PMID: 30628331 DOI: 10.13227/j.hjkx.201807031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To investigate the potential application of nitrocellulose membrane (NCM) in water treatment, this study examined the photolysis of p-nitrophenol, with NCM as the source of reactive oxygen species. Effects of solution pH, light conditions, and water dissolved substances on p-nitrophenol photolysis were investigated, and possible mechanisms were discussed. The results demonstrated that the quantum yield for hydroxyl radicals from the NCM was 1.30×10-4, which is approximately 1.86 times higher than that from TiO2. The photolysis rate of p-nitrophenol in the presence of NCM was 0.0055 min-1, which is much higher than that in pure water (9.52×10-4 min-1). This promotion was mainly caused by photo-induced generation of ·OH on NCM surface under light, in which UVA plays an important role in photolysis. The photolysis rate of p-nitrophenol increased with the increase of light intensity and membrane area. Acidic solution (pH=2.0) was preferred for the degradation of p-nitrophenol, with a photolysis rate of 0.0165 min-1; the corresponding degradation of p-nitrophenol exceeded 90% in 120 min. The effects of dissolved substances on photolysis were significantly different. NO3- promoted photolysis by generation of ·OH, and dissolved organic matter decreased photolysis through light attenuation. The intermediate products of gas chromatography-mass spectrometry analysis mainly included phenol, hydroquinone, malonic acid, and oxalic acid, and the possible photolysis pathway was given accordingly.
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Affiliation(s)
- Zhi-Feng Dai
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China
| | - Tong-Qian Zhao
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China
| | - Yong-Guang Yin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Jia-Ping She
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China
| | - Li Wu
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China
| | - Chao Tai
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China
| | - Jing-Yang Sun
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China
| | - Yu-Jun Luo
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China
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Zhang ZF, Luo YJ, Lu Q, Dai SX, Sha WH. Conversion therapy and suitable timing for subsequent salvage surgery for initially unresectable hepatocellular carcinoma: What is new? World J Clin Cases 2018; 6:259-273. [PMID: 30211206 PMCID: PMC6134280 DOI: 10.12998/wjcc.v6.i9.259] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 07/18/2018] [Accepted: 08/07/2018] [Indexed: 02/05/2023] Open
Abstract
AIM To review the conversion therapy for initially unresectable hepatocellular carcinoma (HCC) patients and the suitable timing for subsequent salvage surgery.
METHODS A PubMed search was undertaken from 1987 to 2017 to identify articles using the keywords including “unresectable” “hepatocellular carcinoma”, ”hepatectomy”, ”conversion therapy”, “resection”, “salvage surgery” and “downstaging”. Additional studies were investigated through a manual search of the references from the articles. The exclusion criteria were duplicates, case reports, case series, videos, contents unrelated to the topic, comments, and editorial essays. The main and widely used conversion therapies and the suitable timing for subsequent salvage surgery were discussed in detail. Two members of our group independently performed the literature search and data extraction.
RESULTS Liver volume measurements [future liver remnant (FLR)/total liver volume or residual liver volume/bodyweight ratio] and function tests (scoring systems and liver stiffness) were often performed in order to justify whether patients were suitable candidates for surgery. Successful conversion therapy was usually defined as downstaging the tumor, increasing FLR and providing subsequent salvage surgery, without increasing complications, morbidity or mortality. The requirements for performing salvage surgery after transcatheter arterial chemoembolization were the achievement of a partial remission in radiology, the disappearance of the portal vein thrombosis, and the lack of extrahepatic metastasis. Patients with a standardized FLR (sFLR) > 20% were good candidates for surgery after portal vein embolization, while other predictive parameters like growth rate, kinetic growth rate were treated as an effective supplementary. There was probably not enough evidence to provide a standard operation time after associating liver partition and portal vein ligation for staged hepatectomy or yttrium-90 microsphere radioembolization. The indications of any combinations of conversion therapies and the subsequent salvage surgery time still need to be carefully and comprehensively evaluated.
CONCLUSION Conversion therapy is recommended for the treatment of initially unresectable HCC, and the suitable subsequent salvage surgery time should be reappraised and is closely related to its previous therapeutic effect.
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Affiliation(s)
- Ze-Feng Zhang
- Department of Gastroenterology and Hepatology, Guangdong Geriatrics Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong Province, China
| | - Yu-Jun Luo
- Department of Gastroenterology and Hepatology, Guangdong Geriatrics Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong Province, China
| | - Quan Lu
- Department of Gastroenterology and Hepatology, Guangdong Geriatrics Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong Province, China
| | - Shi-Xue Dai
- Department of Gastroenterology and Hepatology, Guangdong Geriatrics Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong Province, China
| | - Wei-Hong Sha
- Department of Gastroenterology and Hepatology, Guangdong Geriatrics Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong Province, China
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Zhu YB, Liu JS, Wang LQ, Guan X, Luo YJ, Geng J, Geng QG, Lin YJ, Zhang LX, Li XX, Lu YP. [Initial study of transthoracic echocardiography guided three-dimensional printing on the application of assessment of structural heart disease]. Zhonghua Yi Xue Za Zhi 2017; 97:2280-2283. [PMID: 28780843 DOI: 10.3760/cma.j.issn.0376-2491.2017.29.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the feasibility and diagnostic value of preoperative transthoracic echocardiography guided three dimensional printing model (TTE Guided 3DPM) on the assessment of structural heart disease (SHD). Methods: From February 2016 to October 2016, 44 patients underwent cardiac surgery in Tianjin Chest Hospital, forty-four patients were assessed preoperatively using TTE Guided 3DPM, including 25 males and 19 females, aged 3-75 years, with an average of (44±22) years. compared to conventional three dimensional transthoracic echocardiography (3D-TTE), and took direct intraoperative findings as "Golden Standard" simultaneously. There are twelve patients with SHD, including four cases with mitral prolapse, two cases with partial endocardial cushion defect, two cases with secondary atrial septal defect, two cases with rheumatic mitral stenosis, one case with tetralogy of Fallot, one case with ventricular septal defect (VSD), thirty-two patients without SHD were designed as negative control. Results: The sensitivity and specificity of TTE Guided 3DPM were greater than or equal to 3D-TTE, P value of McNemar test of 3D-TTE was greater than 0.05, the difference was not statistically significant, kappa=0.745, P<0.01, indicated that the results of 3DTTE and the gold standard were generally consistent.P value of McNemar test of TTE Guided 3DPM was greater than 0.05, the difference was not statistically significant, kappa=0.955, P<0.01, indicated that the results of TTE Guided 3DPM and gold standards were consistent. Compared with 3D-TTE and TTE Guided 3DPM, P value was greater than 0.05, the difference was not statistically significant, kappa=0.879, P<0.01, indicated that the results of 3D-TTE and TTE Guided 3DPM were consistent. TTE Guided 3DPM displayed the three-dimensional structure of SHD cardiac lesions clearly, which were consistent with intraoperative findings. Conclusion: TTE Guided 3DPM provides essential information for the preoperative evaluation and decision of SHD.
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Affiliation(s)
- Y B Zhu
- Graduate School of Tianjin Medical University, Tianjin 300070, China
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Yuan KH, Zhang M, Luo YJ. [Palliative radiotherapy for AIDS related diffuse large B cell lymphoma: a report of six cases with literature review]. Zhonghua Xue Ye Xue Za Zhi 2016; 37:1082-1084. [PMID: 28088975 PMCID: PMC7348490 DOI: 10.3760/cma.j.issn.0253-2727.2016.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Indexed: 11/24/2022]
Affiliation(s)
- K H Yuan
- Department of Oncology, Kunming Yan'an Hospital, Kunming Medical University, Kunming 650051, China
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Wu Y, Wang B, Li YH, Xu XG, Luo YJ, Chen JZS, Wei HC, Gao XH, Chen HD. Meta-analysis demonstrates association between Arg72Pro polymorphism in the P53 gene and susceptibility to keloids in the Chinese population. Genet Mol Res 2012; 11:1701-11. [PMID: 22843046 DOI: 10.4238/2012.june.29.2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Although there is evidence suggesting genetic susceptibility for keloids, studies investigating the association between Arg72Pro polymorphism in the P53 gene and tendency to form keloids have given variable results. We made a meta-analysis of the effects of P53 Arg72Pro polymorphism on keloid risk in the Chinese population by conducting searches of the published literature in Pubmed, Embase, CBMdisc, and CNKI databases up to June 2011. Six studies were included in the meta-analysis, with a total of 359 keloid cases and 493 healthy controls. Meta-analysis results, respectively in the PCR-reverse dot blot and PCR-RFLP subgroups, showed significant associations between P53 Arg72Pro polymorphism and susceptibility to keloid in the comparisons of Pro allele vs Arg allele (odds ratio (OR) = 2.29, 95% confidence interval (CI) = 1.45-3.60; OR = 0.74, 95%CI = 0.56-0.98); Pro/Pro vs Pro/Arg + Arg/Arg (OR = 2.91, 95%CI = 1.88-4.53; OR = 0.54, 95%CI = 0.32-0.92); Pro/Pro vs Arg/Arg (OR = 2.79, 95%CI = 1.54-5.06; OR = 0.51, 95%CI = 0.28-0.92); Pro/Pro vs Pro/Arg (OR = 2.85, 95%CI = 1.75-4.63; OR = 0.57, 95%CI = 0.32-0.99). We conclude that the Pro allele of P53 Arg72Pro polymorphism is a risk factor for keloids in the Chinese population.
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Affiliation(s)
- Y Wu
- Department of Dermatology, The First Affiliated Hospital of China Medical University, Shenyang, PR China
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Gu YY, Luo YJ. Neural Mechanism for Integration of Facial and Bodily Expression. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)72005-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Li X, Chan RC, Luo YJ. Differential Effects of Negative Emotion on Encoding, Retention and Retrieval of Spatial and Verbal Working Memory. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)71445-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Abstract
Oversegmentation is a tough problem in the morphological watershed segmentation of irregular-shaped binary particles, which is usually caused by spurious minima in the inverse distance transform. The position relationship between two objects is clear, according to the value of overlap parameter defined in the paper, and an adaptive algorithm is presented to depress oversegmentation by building the criterion to merge the spurious local minima. Some particle images are provided to validate the performance of the proposed method.
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Affiliation(s)
- H Q Sun
- Department of Military Oceanography, Dalian Naval Academy, Dalian 116018, China.
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Zhang ZZ, Su SM, Luo YJ, Lu M. Improvement of natural microbial remediation of petroleum-polluted soil using graminaceous plants. Water Sci Technol 2009; 59:1025-1035. [PMID: 19273903 DOI: 10.2166/wst.2009.081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A 150-day pot experiment was conducted with graminaceous plants grown in natural soil contaminated with petroleum. The relationships among microbial activity, dehydrogenase activity, catalase activity, soil moisture, and the petroleum degradation rate were analyzed. All three plants accelerated the degradation of petroleum compared with unplanted soil. Plant roots improved the soil moisture by about 5% (from 15% in unplanted soil to 20% in soil containing plant roots), and the number of microorganisms in the rhizosphere increased by more than three orders of magnitude. The induction of the rhizosphere environment and the intimidation of the petroleum changed the abundance and activity of the microorganisms. Dehydrogenase activity in the rhizosphere was 1.54 to 1.87 times the value in the unplanted soil, but catalase activity was 0.90 to 0.93 times the value in unplanted soil. The petroleum degradation rates in the rhizosphere were 2.33 to 3.19 times higher than in the unplanted soil. The effect of rhizosphere degradation clearly changed the hydrocarbon composition, increasing the degradation of alkane hydrocarbons with low and moderate carbon contents. The rhizosphere environment promoted degradation of the high-carbon-content hydrocarbons into low-carbon-content hydrocarbons. At the same time, the Pr/nC(17), Ph/nC(18), and Pr/Ph values increased by 0.99 and 2.69 units, and decreased by 1.25 units, respectively, compared with the undegraded oil. The plants also accelerated the isomerization of alkane hydrocarbons.
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Affiliation(s)
- Z Z Zhang
- Faculty of Chemical Science and Engineering, China University of Petroleum, Beijing, 102249, China.
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Tan HZ, Luo YJ, Wen SW, Liu AZ, Li SQ, Yang TB, Sun ZQ. The effect of a disastrous flood on the quality of life in Dongting lake area in China. Asia Pac J Public Health 2005; 16:126-32. [PMID: 15624791 DOI: 10.1177/101053950401600209] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We carried out an epidemiological study to assess the impact of flood on the quality of life (QOL) of residents in the affected areas in China. We used a natural experiment approach, randomly selected 494 adults from 18 villages, which suffered from flooding as a result of embankments collapsing, 473 adults from 16 villages, which suffered from, soaked flood, and 773 adults from 11 villages without flood (control group). We used the Generic QOL Inventory-74 (GQOLI-74), social support scale, and questionnaires to assess the QOL of all study participants. The QOL was significantly poorer in soaked group (58.4) and (especially) in collapsed group (55.1) than in control group (59.5, p<0.001). Adjustment for potential confounding factors did not change the results. The impact of flood on QOL was stronger among farmers, seniors, persons with introvert personality, and residents with adverse life-events, whereas social support and extrovert personalities offset the negative impact of flood on QOL.
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Affiliation(s)
- H Z Tan
- Department of Epidemiology, Xiangya School of Public Health, Central-South University, Changsha, Hunan, PR China
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Abstract
An experiment was conducted to examine the hemispheric dominance in semantic processing of Chinese characters. Results showed that N1 is the earliest component that reflects the semantic processing of Chinese characters. Although N1 of the left hemisphere is larger in amplitude, that of the right hemisphere is shorter in latency. Based on these findings, the authors propose that the left hemisphere does not start processing until the necessary information has been transferred from the right hemisphere. Once the left hemisphere starts processing, its intensity is stronger. Thus, it is more appropriate to differentiate hemispheric processing dominance into two dimensions: speed and intensity. Moreover, the semantic cognition onset of Chinese characters occurs from 100 ms to 160 ms in the posterior perceptual processing area of brain.
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Affiliation(s)
- J H Wei
- Laboratory of Mental Health, Institute of Psychology, The Chinese Academy of Sciences, Beijing, Hong Kong
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Abstract
The temporal dynamics of the spatial scaling of attention during visual search were examined by recording event-related potentials (ERPs). A total of 16 young participants performed a search task in which the search array was preceded by valid cues that varied in size and hence in precision of target localization. The effects of cue size on short-latency (P1 and N1) ERP components, and the time course of these effects with variation in cue-target stimulus onset asynchrony (SOA), were examined. Reaction time (RT) to discriminate a target was prolonged as cue size increased. The amplitudes of the posterior P1 and N1 components of the ERP evoked by the search array were affected in opposite ways by the size of the precue: P1 amplitude increased whereas N1 amplitude decreased as cue size increased, particularly following the shortest SOA. The results show that when top-down information about the region to be searched is less precise (larger cues), RT is slowed and the neural generators of P1 become more active, reflecting the additional computations required in changing the spatial scale of attention to the appropriate element size to facilitate target discrimination. In contrast, the decrease in N1 amplitude with cue size may reflect a broadening of the spatial gradient of attention. The results provide electrophysiological evidence that changes in the spatial scale of attention modulate neural activity in early visual cortical areas and activate at least two temporally overlapping component processes during visual search.
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Affiliation(s)
- Y J Luo
- Cognitive Science Laboratory, The Catholic University of America, 250 O'Boyle Hall, Washington, DC 20064, USA
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17
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Abstract
31 subjects viewed an optokinetic rotating drum for 12 min. in one session and self-rotated by walking quickly around a vertical pole with eyes closed while alternately flexing and extending the neck in another session. The self-rotation session contained 6 trials (3 clockwise and 3 counterclockwise rotations). Each trial contained 20 cycles of self-rotations. Self-reported ratings of nausea and symptoms of motion sickness were obtained for each session. The subjects developed symptoms of nausea, sweating, dizziness, headache, drowsiness, and changes in salivation in both drum rotation and self-rotation sessions. However, the subjects reported higher ratings of nausea in the session of optokinetic rotation than in the session of self-rotation around a vertical pole. These results indicated that both optokinetic rotation and self-rotation with eyes closed while alternately flexing and extending the neck are effective means of inducing nausea and motion sickness.
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Affiliation(s)
- S Hu
- Department of Psychology, Humboldt State University, Arcata, CA 95521, USA.
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Hu S, Luo YJ, Hui L. Preliminary study of associations between objective parameters of facial electromyography and subjective estimates of taste palatability. Percept Mot Skills 2000; 91:741-7. [PMID: 11153840 DOI: 10.2466/pms.2000.91.3.741] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
20 subjects' palatability reports and facial electromyographic (EMG) activities at the zygomaticus major, corrugator supercilli, and levator labii (superioris/alaeque nasi) regions were recorded while they were tasting water or pickle juice. The results showed that subjects reported significantly higher ratings of palatability to water than to pickle juice. The EMG activities at the levator labii region generated significantly higher power than those at the corrugator supercilli region while tasting water. The EMG activities at the levator labii region generated significantly higher power than those at the corrugator supercilli region and those at the zygomaticus major region while tasting pickle juice. It was concluded that the facial EMG activity at the levator labii region was the most sensitive indicator of palatability.
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Affiliation(s)
- S Hu
- Department of Psychology, Humbolt State University, Arcata, CA 95521, USA.
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19
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Abstract
In two experiments event-related potentials (ERPs) to visual and auditory stimuli were measured in 12 healthy subjects. A cross-modal and delayed response paradigm was used that allows ERPs to be obtained separately to attended and unattended stimuli under conditions in which unattended stimuli are less likely to be covertly or randomly attended. The results showed: (1) N1 enhancement with attention for standard stimuli in auditory and visual modalities and for deviant stimuli in the visual modality; (2) The onset time and scalp distribution of both the N1 for attend condition and Nd1 were similar regardless of standard or deviant stimuli in the auditory and visual modality; the onset time of Nd1 elicited by auditory and visual deviant stimuli was earlier than that of the unattended N1, and their scalp distributions were different; and (3) The Nd1 components elicited by auditory and visual deviant stimuli were distributed over the respective primary sensory areas, but Nd1 components evoked by auditory and visual standard stimuli were distributed over the frontal scalp. These results suggest that the attended N1 enhancement is primarily caused by a component with endogenous origins and that the early attention effect occurs before the exogenous components. The results support the view that the cross-modal attention to deviant stimuli modulates modality-specific processing in the brain, whereas attention to standard stimuli affects modality-nonspecific or supramodal brain systems.
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Affiliation(s)
- Y J Luo
- Laboratory for Higher Brain Function, Institute of Psychology, The Chinese Academy of Sciences, Beijing, China.
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20
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Abstract
20 subjects' event-related brain potentials were measured during a lexical decision task in which Chinese characters were used in both conditions of related (antonym) and unrelated words. Analysis indicated that the mean reaction time for unrelated words was 130 msec. longer than that elicited by related words. The condition of unrelated words elicited a significant N450, and an obvious P500 was evoked by related words at each of the 17 recording sites. Furthermore, the amplitudes of N210 and N450 were larger in the left hemisphere than in the right hemisphere but the amplitude of P500 was larger in the right hemisphere than in the left hemisphere.
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Affiliation(s)
- Y J Luo
- Laboratory for Higher Brain Function, Chinese Academy of Sciences.
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21
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Hu S, Lagomarsino JJ, Luo YJ. Drinking milk or water has no effect on the severity of optokinetic rotation-induced symptoms of motion sickness. Aviat Space Environ Med 1998; 69:1158-61. [PMID: 9856539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
BACKGROUND The present study investigated the effects of drinking milk or water before viewing an optokinetic rotation drum on the severity of motion sickness and abnormal gastric myoelectric activity. METHODS There were 27 subjects who drank 300 ml of milk or water, or drank nothing, in three separate sessions with 2-d intervals between every two sessions. Subjects in each session then viewed a vertically striped optokinetic rotation drum for 16 min. Symptoms of motion sickness and electrogastrograms (EGGs) were measured. RESULTS Subjects reported no significant difference in symptoms of motion sickness among sessions of drinking milk, water, or nothing. EGG recordings indicated that subjects in sessions of drinking milk and water significantly increased normal gastric myoelectric activity at EGG 3 cycles per minute (cpm). Subjects in all three sessions increased abnormal EGG activity at 4-9 cpm during drum rotation period, however, the ratios of EGG 4-9 cpm of drum rotation and baseline periods were not significantly different among sessions. CONCLUSION These results demonstrated that drinking milk or water before viewing an optokinetic rotation drum exhibited no effect on the severity of symptoms of motion sickness and abnormal gastric myoelectric activity.
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Affiliation(s)
- S Hu
- Department of Psychology, Humboldt State University, Arcata, CA 95521, USA
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22
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Chen XM, Tong ML, Luo YJ, Chen ZN. Inclusion of 4,4'-Bipyridine (γbpy) in Its Copper(II) Aqua Perchlorato Complex. Crystal Structure of [Cu( γbpy )(H2O)2(ClO4)2]n.( γbpy )n. Aust J Chem 1996. [DOI: 10.1071/ch9960835] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
An example of a 4,4'-bipyridine ( γbpy ) clathrate in its copper(II) complex has been established. The compound, [Cu( γbpy )(H2O)2(ClO4)2]n.( γbpy )n, crystallizes in the monoclinic space group C2/c with a 16.651(3), b 11.089(2), c 14.360(3) Ǻ, β 116.45(3)°, V 2373.9(8)Ǻ3. The crystal structure comprises γbpy -bridged linear polymeric [Cu( γbpy )(H2O)2(ClO4)2]n chains, where the copper atom, located on a crystallographic twofold axis, is coordinated in an elongated octahedral environment by two nitrogen atoms of the bridging γbpy ligands (Cu-N 1.998(4)Ǻ) and two water molecules (Cu-O 1.968(3)Ǻ) at the equatorial positions, and two perchlorate oxygen atoms at the axial positions (Cu-O 2.414(4)Ǻ). The chains are interconnected by hydrogen bonds between the aqua ligands and the uncoordinated perchlorate oxygen atoms to form two-dimensional layers with cavities each enclosing a γbpy molecule. Hydrogen bonding between the aqua ligands and the nitrogen atoms of the solvate γbpy molecules further extends the structure into a three-dimensional network in the solid.
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23
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Lu JW, Luo YJ, Chen WB. [Clinical application of the forced inspiratory volume-time curve. A preliminary study]. Zhonghua Jie He He Hu Xi Za Zhi 1993; 16:135-7, 186. [PMID: 8242807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The forced inspiratory volume-time curve in 25 health subjects with normal ventilation function and 25 patients with COPD were determined, and MMIF, FIV were calculated from the curves. The PImax was measured in the same 50 subjects by modified Blac method sequentially. A close relationship between MMIF, FIV and PImax was found. This result indicated that MMIF and FIV could be indeed for evaluation of strength of respiratory, muscles. Additional observations of MMIF, FIV and PImax in 50 patients with COPD before and after inotropic drugs, aminophylline and CNB, further proved the validity of MMIF and FIV.
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Affiliation(s)
- J W Lu
- Department of Internal Medicine, First Affiliated Hospital of West China University of Medical Sciences, Chengdu
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24
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Luo YJ. [Measurement of the emptying time constant of the lungs and the mathematical model of timed forced volume capacity (FVC-t) curve]. Zhonghua Jie He He Hu Xi Za Zhi 1990; 13:282-5, 318. [PMID: 2085858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In this paper, the principle and the method of the measurement of the emptying time constant of the lungs with FVC-t curve were studied, the formula TC = 2MTTp was derived, and the lung emptying speed at the lower portion of the lung volume on the FVC-t curve from first TC to fifth TC also were determined. The results showed that the percentage of the lung volume degradation between the measurement values and the theoretical values calculated by formula V = V0e-(t/TC) is close in both of normal persons and patients with obstructive emphysema, and the TC/t1/2 is also close to the theoretical values. Thus we suggest that FVC-t curve at the lower portion of the lung volume can be expressed by the formula V = V0e-(t/TC).
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Affiliation(s)
- Y J Luo
- First Affiliated Hospital, West China University of Medical Sciences, Chengdu
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25
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Luo YJ, Yuan YR, Zhang ZY, Chen WB, Yin DK, Ye X, He TL. ["Effort index"--estimating abilities of respiratory muscles]. Hua Xi Yi Ke Da Xue Xue Bao 1989; 20:50-3. [PMID: 2793143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This paper analyzes the actual values of FEV1 and MBC in 240 normal subjects, 147 patients with COPD and 85 cases of cancer tumors, and shows that the actual values of MBC in both COPD patients and cancerous cases are much lower than the calculated values from FEV1. The authors believe that the ratio between the actual values of MBC and its calculated values may be used to reflect the strengths or abilities of the respiratory muscles efforted, called "Effort Index". The formula of MBC calculated from FEV1 is based on the linear regression equation formulated from the actual values of FEV1 and MBC in 240 normal subjects (aged 16-80 yrs). The "Effort Index" is equal to the actual value of MBC/the calculated value of MBC. The "Effort Index" in 240 normal subjects is 1.00 +/- 0.14 (M +/- SD), in mild, moderate and severe cases of COPD being 0.907, 0.807 and 0.626 respectively, and in markedly wasted cancer cases, 0.861 +/- 0.130. The results show that the formula of MBC calculated from FEV1 is useful only for the subjects with normal respiratory muscular abilities; while in COPD patients and markedly emaciated cancerous cases, owing to the chronically tired-out or exhausted respiratory muscular strength, the actual values of MBC are actually lower than those calculated from FEV1, hence the decreased "Effort Index".
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Yuan YR, Zhang ZY, Chen WB, Yin DK, Luo YJ, Ye X, He TL. [Determination of positive judgment standards in lung function indices]. Hua Xi Yi Ke Da Xue Xue Bao 1988; 19:305-8. [PMID: 3253179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Chen WB, Yin DK, Yuan YR, Luo YJ, Ye X, He TL. [Normal values and predictive equations of pulmonary function of healthy adults measured by electronic spirometer]. Hua Xi Yi Ke Da Xue Xue Bao 1988; 19:184-8. [PMID: 3198103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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28
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Luo YJ, Zhang ZY, Yin DK, Ye X. [Indirect determination of effective values of lung compliance and its clinical applications]. Hua Xi Yi Ke Da Xue Xue Bao 1987; 18:64-7. [PMID: 3623525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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29
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Luo YJ, Yang DP. [Stress hyperglycemia due to severe dehydration]. Hua Xi Yi Ke Da Xue Xue Bao 1986; 17:236-7. [PMID: 3557431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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30
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Luo YJ, Zhang ZY, Yin DK, Feng YL, Ye X, He TL. [Determination of the partial mean transit time of high lung volumes and its clinical evaluation]. Hua Xi Yi Ke Da Xue Xue Bao 1986; 17:153-6. [PMID: 3770726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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