21 results on '"Lele Chen"'
Search Results
2. Real-time 3D neural facial animation from binocular video
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Jason Saragih, Fernando De la Torre, Lele Chen, Vasu Agrawal, Yaser Sheikh, Tomas Simon, and Chen Cao
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business.industry ,Computer science ,Facial motion capture ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,Process (computing) ,Facial hair ,Computer Graphics and Computer-Aided Design ,medicine.anatomical_structure ,Face (geometry) ,Image noise ,medicine ,Augmented reality ,Computer vision ,Artificial intelligence ,business ,Computer facial animation ,ComputingMethodologies_COMPUTERGRAPHICS ,Avatar - Abstract
We present a method for performing real-time facial animation of a 3D avatar from binocular video. Existing facial animation methods fail to automatically capture precise and subtle facial motions for driving a photo-realistic 3D avatar "in-the-wild" (i.e., variability in illumination, camera noise). The novelty of our approach lies in a light-weight process for specializing a personalized face model to new environments that enables extremely accurate real-time face tracking anywhere. Our method uses a pre-trained high-fidelity personalized model of the face that we complement with a novel illumination model to account for variations due to lighting and other factors often encountered in-the-wild (e.g., facial hair growth, makeup, skin blemishes). Our approach comprises two steps. First, we solve for our illumination model's parameters by applying analysis-by-synthesis on a short video recording. Using the pairs of model parameters (rigid, non-rigid) and the original images, we learn a regression for real-time inference from the image space to the 3D shape and texture of the avatar. Second, given a new video, we fine-tune the real-time regression model with a few-shot learning strategy to adapt the regression model to the new environment. We demonstrate our system's ability to precisely capture subtle facial motions in unconstrained scenarios, in comparison to competing methods, on a diverse collection of identities, expressions, and real-world environments.
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- 2021
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3. Type of tea consumption and depressive symptoms in Chinese older adults
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Yao Yao, Tze Pin Ng, Sang Yhun Ju, Huashuai Chen, Danan Gu, Lele Chen, Huazhen Yang, and Yi Zeng
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Male ,China ,complex mixtures ,03 medical and health sciences ,0302 clinical medicine ,Fermented tea ,Type of tea intake ,Medicine ,Humans ,030212 general & internal medicine ,Tea consumption ,Longitudinal Studies ,CLHLS ,Socioeconomic status ,Depression (differential diagnoses) ,Depressive symptoms ,Aged ,Aged, 80 and over ,Tea ,business.industry ,Depression ,RC952-954.6 ,food and beverages ,Center for Epidemiologic Studies Depression Scale ,Cross-Sectional Studies ,Geriatrics ,Older adults ,Lower prevalence ,Female ,Mental health ,Geriatrics and Gerontology ,business ,Psychosocial ,030217 neurology & neurosurgery ,Demography ,Research Article - Abstract
Background Existing research indicates that tea drinking may exert beneficiary effects on mental health. However, associations between different types of tea intake and mental health such as depression have not been fully examined. The purpose of this study was to examine the associations of green tea, fermented tea, and floral tea consumption with depressive symptoms. Methods We used data from the 2018 wave of the Chinese Longitudinal Healthy Longevity Survey, a nationwide survey on older adults in mainland China. A total of 13,115 participants (mean age 83.7 years, 54.2% were women) with valid responses were included in the analysis. The type (green, fermented [black, Oolong, white, yellow, dark, and compressed teas], and floral) and the frequency of tea consumption were recorded, and depressive symptoms were assessed using 10-item of the Center for Epidemiologic Studies Depression Scale (CES-D-10). We examined the associations between the type and the frequency of tea intake and depression, controlling for a set of demographic, socioeconomic, psychosocial, behavioral, and health-related variables. Results Overall, intakes of green tea, fermented tea, and floral tea were all significantly associated with lower prevalence of depressive symptoms, independent of other risk factors. Compared with the group of no tea intake, the adjusted ORs of depressive symptoms for daily green tea, fermented tea, and floral tea intake were 0.85 (95% CI: 0.76–0.95), 0.87 (95% CI: 0.76–0.99), and 0.70 (95% CI: 0.59–0.82), respectively. Linear associations were observed between the frequencies of all three types of tea intake and depressive symptoms (P Conclusions Among Chinese older adults, regularly consumed any type of tea (green, fermented, or floral) were less likely to show depressive symptoms, the associations seemed more pronounced among floral tea and green tea drinkers.
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- 2021
4. CST1 Promoted Gastric Cancer Migration and Invasion Through Activating Wnt Pathway
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Si Chen, Yingling Liu, Kaiguang Zhang, and Lele Chen
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0301 basic medicine ,Cancer therapy ,Wnt pathway ,Biology ,migration ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Original Research ,Gene knockdown ,Migration invasion ,gastric cancer ,digestive, oral, and skin physiology ,Wnt signaling pathway ,CST1 ,Mechanism analysis ,Cancer ,medicine.disease ,invasion ,Cysteine protease ,Nuclear translocation ,digestive system diseases ,030104 developmental biology ,Oncology ,Cancer Management and Research ,030220 oncology & carcinogenesis ,Cancer research - Abstract
Si Chen,* Yingling Liu,* Kaiguang Zhang, Lele Chen Department of Gastroenterology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, Anhui, People’s Republic of China*These authors contributed equally to this workCorrespondence: Si ChenDepartment of Gastroenterology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, #17 Lvjiang Road, Hefei, 230001, Anhui, People’s Republic of ChinaEmail css81729@sina.comIntroduction: Gastric cancer is one of the main reasons of cancer-induced death, exploring the molecular mechanisms of gastric cancer progression is critical for gastric cancer therapy. Here, we studied the role of cysteine protease inhibitor CST1 in gastric cancer progression.Methods: Matrigel-coated or -uncoated transwell assay was used to determine the effect of CST1 on gastric cancer invasion and migration, luciferase reporter system was used to determine the effect of CST1 on Wnt pathway activity.Results: CST1 had high expression levels in gastric cancer tissues and cells, patients who had high CST1 expression had poor outcome. Overexpression of CST1 increased gastric cancer migration and invasion, while knockdown of CST1 suppressed gastric cancer migration invasion. Mechanism analysis showed CST1 promoted WNT signaling pathway activity, promoted the nuclear translocation of β-catenin and the expression of Wnt signaling targets. Inhibition of Wnt pathway in CST1 overexpression cells inhibited migration and invasion, suggesting CST1 promoted gastric cancer cell migration and invasion through activating the Wnt pathway.Conclusion: In summary, we found CST1 promoted gastric cancer migration and invasion through activating Wnt signaling, providing a novel target for gastric cancer therapy.Keywords: CST1, gastric cancer, invasion, migration, Wnt pathway
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- 2021
5. Successful treatment of periungual warts with local hyperthermia: report of two cases
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Jingjing Liu, Junyi Shao, Fan Jiang, Zhiming Li, Nali Yang, and Lele Chen
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Male ,Hyperthermia ,medicine.medical_specialty ,business.industry ,virus diseases ,Hyperthermia, Induced ,Dermatology ,medicine.disease ,Nail Diseases ,Treatment Outcome ,Recurrence ,Local Hyperthermia ,medicine ,Humans ,Female ,In patient ,Warts ,business ,Common warts ,High recurrence rate - Abstract
Periungual warts are common warts that grow on the periungual or nail margin, and it's challenging to remove them due to their particular location, causing its high recurrence rate and brings difficulties to the treatments. We successfully cured two cases of stubborn periungual warts by local hyperthermia. A male with warts on his hands and knees and a girl with periungual warts on her fingers received local hyperthermia of 44 °C for 30 min a time. One month after the last treatment, their lesions disappeared entirely and did not relapse during the follow-up period. These two cases showed that local hyperthermia might be a safe and effective method for treating periungual warts in patients with poor traditional treatment.
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- 2021
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6. Feedback-related negativity and addiction
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Shiwei Jia, Rong Huang, and Lele Chen
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Behavioral addiction ,Addiction ,media_common.quotation_subject ,Feedback related negativity ,medicine ,medicine.symptom ,Psychology ,Substance addiction ,General Economics, Econometrics and Finance ,media_common ,Clinical psychology - Published
- 2020
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7. Influence of Port-wine Stains on Quality of Life of Children and Their Parents
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Junyi Shao, Zhiming Li, Jingjing Liu, Nali Yang, Fan Jiang, and Lele Chen
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Male ,Parents ,family dermatology life quality index ,Pediatrics ,medicine.medical_specialty ,Port wine ,Port-Wine Stain ,Dermatology ,Affect (psychology) ,Quality of life ,Psychological support ,Medicine ,Humans ,Family ,Hemangioma, Capillary ,Child ,business.industry ,Congenital Vascular Malformations ,food and beverages ,parents’ quality of life ,General Medicine ,Dermatology Life Quality Index ,port-wine stains ,quality of life ,RL1-803 ,Female ,business - Abstract
Port-wine stains are congenital vascular malformations that affect the quality of life of children and their parents. This study used the Family Dermatology Life Quality Index and Children’s Dermatology Life Quality Index to examine the effects of port-wine stains on the quality of life of children and their parents, including an in-depth, systematic analysis of the moderating effects of the children’s sex and port-wine stain classification. The study included 43 children (25 girls and 18 boys) and their parents. The presence of a port-wine stain had a significantly greater impact on the quality of life of mothers than on that of fathers (p
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- 2021
8. Depression in patients with traumatic brain injury - Prevalence and association with cognitive and physical function
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Y. Liang, Qilong Cao, Yuhai Wang, Wei Lin, Lele Chen, and Qihao Guo
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Activities of daily living ,Traumatic brain injury ,05 social sciences ,050109 social psychology ,Cognition ,Odds ratio ,medicine.disease ,Logistic regression ,050105 experimental psychology ,Confidence interval ,medicine ,0501 psychology and cognitive sciences ,Association (psychology) ,Psychology ,General Psychology ,Depression (differential diagnoses) ,Clinical psychology - Abstract
Depression is the most commonly diagnosed disorder among patients with traumatic brain injury (TBI). Understanding the association between the depression and the cognitive and physical function has important clinical implications in promoting the quality of life. Although evidences existed that patients with TBI experienced depression, cognitive impairment, and reduction in physical function. However, the relationship among these three conditions was not well understood. In the current study, we used the Hamilton Depression Scale, Montreal Cognitive Assessment-Basic Scale, and Activity of Daily Living Scale to assess the conditions of depression, cognition, and activities of daily living (ADL) among 145 TBI patients. To better understand the relationship between depression, cognition, and ADL, the data was analyzed using binary logistic regression. The Odds Ratio (OR) was computed to explore the risk of cognitive impairment and low-activities of daily living with depression. A total of 62.9% (n = 90/145) of patients lived with depression. The risk of cognitive impairment was 2.30 times higher for patients with depression than patients without depression (OR = 2.30, 95% confidence interval [CI] 1.08, 4.90), and the risk of low-activities of daily living was 5.14 times higher for patients with depression than patients without depression (OR = 5.14, 95% CI 2.17, 12.14). Compared to patients without depression, patients with depression scored worse on tests of language and visual-spatial perception, and were slower on tests of executive functioning. In summary, this study provides initial evidence that depression significantly affects the cognition and ADL of TBI patients.
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- 2019
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9. An Investigation of a Frontal Negative Slow Wave in a Virtual Hedonic Purchase Task
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Kunpeng Jing, Yupeng Mei, Zhijie Song, Rui Shi, and Lele Chen
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0301 basic medicine ,media_common.quotation_subject ,impulsivity ,Neurosciences. Biological psychiatry. Neuropsychiatry ,Context (language use) ,Impulsivity ,consumer neuroscience ,03 medical and health sciences ,Behavioral Neuroscience ,0302 clinical medicine ,Promotion (rank) ,Sales promotion ,Perception ,medicine ,Biological Psychiatry ,Original Research ,media_common ,Consumption (economics) ,N2 ,Advertising ,inhibition ,Preference ,Psychiatry and Mental health ,030104 developmental biology ,Neuropsychology and Physiological Psychology ,Neurology ,frontal negative slow-wave ,medicine.symptom ,Psychology ,Consumer neuroscience ,030217 neurology & neurosurgery ,Neuroscience ,RC321-571 - Abstract
There is a connection between the frontal negative slow wave (FNSW) and the arousal inhibition in the hedonic purchase context. To calculate the FNSW (400–800 ms), event-related potentials (ERPs) method was applied to depict the neural substrates on prudent and impulsive consumers’ behaviors within various states of promotion. Promotion types include the pure price promotion and the mixed promotion (a mixture of a charitable donation and a discount). Behaviorally, consumers response more quickly in the pure price promotion condition and they express a preference for the mixed promotion. More importantly, a larger FNSW emerged in the impulsive consumers than the prudent, suggesting that the former might tend to control their eagerness to consume hedonic items. Compared with the price promotion as the worse option, the mixed promotion as the better option caused more perceptual conflict, leading to an increase in N2 amplitude. It suggests that consumers incline to reject the worse offers. These results also reveal that people primarily have to search negative promotion information by their insight and subsequently impulsive consumers inhibit the responses to the promotion information. The method of ERPs and FNSW should be helpful for marketing researchers and professionals on hedonic consumption and sales promotion.
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- 2021
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10. The impact of quarantine duration on psychological outcomes and vaccination intention during the second outbreak of COVID-19 in China
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Dingding Wang, Lele Chen, Yuxin Xia, and Renlai Zhou
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Vaccination ,Coronavirus disease 2019 (COVID-19) ,business.industry ,law ,Environmental health ,Quarantine ,Outbreak ,Medicine ,Duration (project management) ,China ,business ,law.invention - Abstract
Objectives A second outbreak of COVID-19 happened in China. We assessed the impact of quarantine duration on psychological outcomes and vaccination intention. Methods A cross-sectional online survey was employed. Participants were invited to complete the measurement of quarantine duration, social distancing, psychological distress, wellbeing (WHO-5), and vaccination intention. Multiple linear and logistic regression was used to examine the relationship between quarantine duration and social distancing, psychological distress, wellbeing, as well as vaccination intention. Results Of the 944 participants, 17.2% (7.8% quarantined for 1–7 days and 9.4% quarantined for > 7 days) of the sample have been quarantined. Quarantine for 1–7 days raised the social distancing(β = 2.61 95% CI 1.90–3.33) and vaccination intention (OR = 2.16 95% CI 1.22–3.82) .While quarantine for > 7 days was associated with the increases the social distancing(β = 3.00 95% CI 2.37–3.64) and psychological distress (β = 1.03 95% CI 0.22–1.86), and the decrease of wellbeing(β = 1.27 95% CI 0.29–2.26). Conclusions Longer quarantine duration reported a greater impact on social distancing and psychological distress, and a poorer wellbeing during the second COVID-19 pandemic. Quarantine for 1–7 days associated with the increase of vaccination intention. The duration of quarantine should be considered when preparing for immunization programs and preventing psychological disorders during COVID-19 pandemic.
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- 2021
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11. Self-reported hearing difficulty increases 3-year risk of incident cognitive impairment: The role of leisure activities and psychological resilience
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Lele Chen
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030214 geriatrics ,business.industry ,Incidence (epidemiology) ,Confounding ,Psychological intervention ,Cognition ,Odds ratio ,Resilience, Psychological ,Structural equation modeling ,Confidence interval ,03 medical and health sciences ,Psychiatry and Mental health ,0302 clinical medicine ,Leisure Activities ,Hearing ,Medicine ,Humans ,Cognitive Dysfunction ,Self Report ,Geriatrics and Gerontology ,Association (psychology) ,business ,Clinical psychology ,Aged - Abstract
OBJECTIVE Although hearing difficulty is associated with cognitive impairment, little is known about the potential mechanisms involved. This study assessed the mediating effects of leisure activities and psychological resilience on the association between hearing difficulty and cognitive impairment. METHODS Two waves of Chinese Longitudinal Healthy Longevity Survey (2011-2014) were used in the current analysis. Hearing difficulty, leisure activities and psychological resilience were measured at baseline. Cognitive function was assessed using the Chinese version of the Mini-Mental State Examination. The data were analyzed using generalized structural equation modeling with adjustment for confounding factors. RESULTS Of the 4267 participants at baseline, 33.5% (1430) reported hearing difficulty. The incidence of cognitive impairment was 15.3% (651) during the 3-year follow-up. Hearing difficulty increased the risk of cognitive impairment (odds ratio [OR] = 1.59, 95% confidence intervals [CI]: 1.26-1.92). Leisure activities and psychological resilience partly mediated the association between hearing difficulty and cognitive impairment. Hearing difficulty was negatively related to leisure activities (β = -0.23, 95% CI: -0.41 to -0.05) and psychological resilience (β = -0.34, 95% CI: -0.57 to -0.11). Furthermore, leisure activities (OR = 0.92, 95% CI: 0.89-0.96) and psychological resilience (OR = 0.95, 95% CI: 0.93-0.98) would significantly decrease the risk of cognitive impairment. CONCLUSIONS Hearing difficulty was associated with the incidence of cognitive impairment in older adults. Leisure activities and psychological resilience mediated the relationship. Participation in leisure activity and promoting psychological resilience may be candidate interventions in preventing cognitive impairment among the individuals with hearing difficulty.
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- 2020
12. A freeze-thawing method applied to the fabrication of 3-d curdlan/polyvinyl alcohol hydrogels as scaffolds for cell culture
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Guixiang Teng, Lele Chen, Shen Song, Ji Zhang, Jipeng Shi, Baotang Zhao, and Ding Ling
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Materials science ,beta-Glucans ,Composite number ,Biocompatible Materials ,macromolecular substances ,02 engineering and technology ,Curdlan ,complex mixtures ,Biochemistry ,Polyvinyl alcohol ,Cell Line ,03 medical and health sciences ,chemistry.chemical_compound ,Crystallinity ,Mice ,X-Ray Diffraction ,Structural Biology ,Tensile Strength ,Freezing ,Spectroscopy, Fourier Transform Infrared ,medicine ,Animals ,Fourier transform infrared spectroscopy ,Molecular Biology ,030304 developmental biology ,0303 health sciences ,integumentary system ,Tissue Engineering ,Tissue Scaffolds ,technology, industry, and agriculture ,Hydrogels ,General Medicine ,021001 nanoscience & nanotechnology ,Thermogravimetry ,chemistry ,Chemical engineering ,Polyvinyl Alcohol ,Self-healing hydrogels ,Microscopy, Electron, Scanning ,Swelling ,medicine.symptom ,0210 nano-technology ,Porosity - Abstract
In this work, an innovative composite hydrogel composed of curdlan (CD)/polyvinyl alcohol (PVA) hydrogels with a 3-d network structure was successfully prepared by freeze-thaw processing. The presence of interactions, changes in crystallinity, and thermal behaviour were investigated by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and thermogravimetry (TGA and DTG), respectively. The morphology of the hydrogels was investigated by scanning electron microscopy (SEM). With the increase of PVA concentration, the composite hydrogel had a greater mechanical strength while remaining remarkably ductile as evinced by tensile test results. PVA content affects the swelling and water retention of CD/PVA hydrogels. The results of CCK-8 assay showed that CD/PVA hydrogels have no cytotoxic effect on the mouse fibroblast L929 cells. The AO/EB double-staining experiment further proved that the cells in the composite hydrogels had good cytocompatibility. The porous biohydrogels developed in the present work can provide an ideal cell growth environment as a scaffold. CD/PVA hydrogels highlight the value of this system for cell adhesion and proliferation, and further soft tissue engineering application.
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- 2020
13. Leisure activities and psychological wellbeing reduce the risk of cognitive impairment among older adults with hearing difficulty: A longitudinal study in China
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Lele Chen
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Gerontology ,Male ,Longitudinal study ,China ,Health Status ,Longevity ,Lower risk ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,0302 clinical medicine ,Leisure Activities ,Asian People ,Medicine ,Humans ,Cognitive Dysfunction ,030212 general & internal medicine ,Longitudinal Studies ,Prospective Studies ,Prospective cohort study ,Hearing Loss ,Aged ,Aged, 80 and over ,030219 obstetrics & reproductive medicine ,business.industry ,Proportional hazards model ,Hazard ratio ,Obstetrics and Gynecology ,Cognition ,Mental Status and Dementia Tests ,Confidence interval ,Mental Health ,Female ,business ,Cohort study - Abstract
Objectives . We used longitudinal cohort data to examine the effect of leisure activities and psychological wellbeing on the risk of cognitive impairment among Chinese older adults with hearing difficulty (HD). Study design . This prospective cohort study included 10,341 cognitively normal individuals aged 65 years or more at baseline from the Chinese Longitudinal Healthy Longevity survey (from 2002 to 2011). Main outcome measures . Hearing difficulty, leisure activities and psychological wellbeing were measured at baseline. Cognitive function was assessed using the Chinese version of the Mini-Mental State Examination (MMSE). Cognitive impairment was defined as an MMSE score of less than 18 points. Results . During a median follow-up of 5.6 years (59,869 person-years), 2,614 participants developed cognitive impairment. Cox proportional hazards models showed that the multi-adjusted hazard ratio (HR, 95% confidence interval) of cognitive impairment was 1.42 (1.28–1.58) for HD. Participants with a healthy lifestyle had a lower risk of cognitive impairment (HR = 0.77, 95% CI 0.69–0.85). Furthermore, participants with HD and a healthy lifestyle (HR = 1.67, 95% CI 1.27–2.18) had a lower HR of cognitive impairment than those with HD and an unhealthy lifestyle (HR = 1.86, 95% CI 1.61–2.14). A healthy lifestyle also delayed the onset of cognitive impairment by 0.50 years in people with HD. Conclusions . HD was associated with an increased risk of cognitive impairment, but a healthy lifestyle may decrease the risk of cognitive impairment related to HD and delay the onset of cognitive impairment.
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- 2020
14. Does self-reported hearing difficulty decrease older adults' cognitive and physical functioning? The mediating role of social isolation
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Renlai Zhou and Lele Chen
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Male ,Physical disability ,Activities of daily living ,Health Status ,Longevity ,General Biochemistry, Genetics and Molecular Biology ,Cohort Studies ,03 medical and health sciences ,0302 clinical medicine ,Cognition ,Activities of Daily Living ,medicine ,Odds Ratio ,Humans ,Cognitive Dysfunction ,Disabled Persons ,030212 general & internal medicine ,Cognitive skill ,Longitudinal Studies ,Social isolation ,Hearing Loss ,Aged ,Aged, 80 and over ,030219 obstetrics & reproductive medicine ,Mini–Mental State Examination ,medicine.diagnostic_test ,business.industry ,Obstetrics and Gynecology ,Odds ratio ,Mental Status and Dementia Tests ,Social Isolation ,Female ,Self Report ,medicine.symptom ,business ,Cohort study ,Clinical psychology - Abstract
Objectives We used longitudinal cohort data to explore the association between self-reported hearing difficulty (SHD) and cognitive as well as physical functioning, and whether the association is mediated by social isolation. Study design 16,786 observations from participants aged 65 and older in two waves of the Chinese Longitudinal Healthy Longevity Survey, a community‐based cohort study, were analyzed. Main outcome measures Cognitive impairment was assessed using the Chinese version of the Mini Mental State Examination (MMSE). Activities of daily living (ADL) and instrumental activities of daily living (IADL) were used as indicators of physical functioning. Results Generalized structural equation modelling (GSEM) analysis showed that SHD increased the risk cognitive impairment (odds ratio [OR] = 2.93, 95 % confidence intervals [CI] 2.61–3.30), ADL disability (OR = 2.10, 95 % CI 1.86–2.38), and IADL disability (OR = 2.39, 95 % CI 2.12–2.68). Social isolation mediated the association of SHD with cognitive functioning, but not with physical functioning. SHD was positively associated with social isolation (OR = 1.23, 95 % CI 1.07–1.42), and social isolation was significantly associated with cognitive impairment (OR = 2.09, 95 % CI 1.74–2.50). Indirect effects of SHD explained 12.3 % of the variance in cognitive impairment via social isolation. Conclusions SHD was associated with adverse cognitive and physical functioning in older adults. Cognitive but not physical functioning was indirectly influenced by SHD via social isolation.
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- 2020
15. Educational disparities in the associations between self-monitoring of blood glucose and glycemic control in type 2 diabetes patients in Xiamen, China
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Ya Fang, Shuyu Yang, Yaofeng Han, Fan Chen, Jielong Wu, Yanbing Zeng, and Lele Chen
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medicine.medical_specialty ,endocrine system diseases ,business.industry ,Endocrinology, Diabetes and Metabolism ,nutritional and metabolic diseases ,Type 2 Diabetes Mellitus ,030209 endocrinology & metabolism ,Type 2 diabetes ,Odds ratio ,medicine.disease ,Logistic regression ,Confidence interval ,Odds ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Diabetes mellitus ,Medicine ,030212 general & internal medicine ,business ,Glycemic - Abstract
BACKGROUND This study examined the combined effects of self-monitoring of blood glucose (SMBG) and educational attainment on glycemic control in type 2 diabetes mellitus (T2DM) patients. METHODS A cross-sectional survey was performed among community residents with T2DM. Good glycemic control was defined as HbA1c
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- 2018
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16. Polysaccharide from Potentilla anserina L ameliorate pulmonary edema induced by hypobaric hypoxia in rats
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Zhao Liu, Jie Guo, Ji Zhang, Maoxing Li, Xu Ding, Jipeng Shi, Lele Chen, Ding Ling, and Tao Zhou
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Male ,0301 basic medicine ,High altitude pulmonary edema ,Hypertension, Pulmonary ,Hypobaric hypoxia ,Inflammation ,RM1-950 ,Altitude Sickness ,Pharmacology ,medicine.disease_cause ,Mice ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Polysaccharides ,Potentilla anserina L polysaccharide ,High-altitude pulmonary edema ,Animals ,Medicine ,RNA, Messenger ,Rats, Wistar ,Hypoxia ,Lung ,Dexamethasone ,Mice, Inbred BALB C ,business.industry ,General Medicine ,Glutathione ,Hypoxia (medical) ,Pulmonary edema ,medicine.disease ,Rats ,Oxidative Stress ,030104 developmental biology ,medicine.anatomical_structure ,chemistry ,030220 oncology & carcinogenesis ,Potentilla ,Cytokines ,Female ,Therapeutics. Pharmacology ,medicine.symptom ,business ,Oxidative stress ,Signal Transduction ,medicine.drug - Abstract
High-altitude pulmonary edema (HAPE) is a life-threatening disease occurs in hypobaric hypoxia (HH) environment, which could be treated by Dexamethasone, but might cause side-effects. Potentilla anserina L polysaccharide (PAP) holds promising physiological and pharmacological properties which could be beneficial for HAPE treatment. In our study, the anti-hypoxia effect of PAP was firstly investigated through anti-normobaric hypoxia test and anti-acute hypoxia test. Then we established a model of HAPE and measured the lung water content, pathological changes and MDA, NO, SOD, GSH concentrations in lung tissues. We also evaluated the protein and mRNA levels of pro-inflammatory cytokines (IL-1β, IL-6, TNF-α, VEGF, NF-κB and HIF-1α) by ELISA kits, RT-PCR and Western blotting. As expected, PAP could dramatically reduce the lung water content, alleviate lung tissue injury, and inhibit MDA and NO production, it also promote SOD activity and GSH expression. In addition, it has been found that PAP blocked the NF-κB and HIF-1α signaling pathway activation, inhibited the generation of downstream pro-inflammatory cytokines. Therefore, PAP provides great potential in HAPE treatment mainly through suppression of oxidative stress and inflammatory suppression.
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- 2021
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17. Primary care reforms in managing chronic diseases in Xiamen, China: A tentative assessment
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Ya Fang, Fan Chen, Lele Chen, Yanbing Zeng, Jielong Wu, and Zhipeng Yuan
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Adult ,Male ,medicine.medical_specialty ,China ,Attitude of Health Personnel ,Primary care ,Logistic regression ,03 medical and health sciences ,Physicians ,Health care ,Medicine ,Humans ,Quality of Health Care ,Primary Health Care ,business.industry ,030503 health policy & services ,Health Policy ,Drug cost ,Community Health Centers ,Patient Acceptance of Health Care ,Blood pressure ,Outpatient visits ,Family medicine ,Health Care Reform ,Community health ,Chronic Disease ,Female ,Health Expenditures ,0305 other medical science ,business - Abstract
Background The primary care reform developed in Xiamen City stood out among the dozens of pilot reforms conducted in China. The aim of this study was to investigate the effects of the reform. Methods The data were collected from the Annual Statistical Report on Xiamen's Hospitals and face-to-face questionnaire interviews among physicians (n = 107) and community members (n = 399). Binary logistic regression was performed to analyze the factors influencing the community members' preference for treatment in community health centers (CHCs). Results The drug cost declined nearly 3.0% in hospitals, and outpatient visits increased more quickly (27.1%) in CHCs. A total of 86.2% of community members preferred to receive treatment for slight illness or chronic diseases in CHCs, and 77.9% of them were willing to be referred to CHCs during the recovery period. Patients who were managed by the general practice (GP) team showed higher percentages in examining and controlling blood pressure and blood glucose. Conclusion The reform in Xiamen was easily accepted by physicians and community members. The reform had rendered initial achievements in reducing drug income in hospitals, increasing outpatient visits in CHCs, seeking health care in CHCs, and controlling blood pressure and glucose for patients with chronic diseases.
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- 2019
18. LETM1 Promotes Gastric Cancer Cell Proliferation, Migration, and Invasion via the PI3K/Akt Signaling Pathway
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Yunfeng Zhang, Chao Xu, Kaiguang Zhang, Lele Chen, Si Chen, Jun Xing, and Yifan Cao
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Cancer Research ,Gene knockdown ,medicine.diagnostic_test ,Cell growth ,Akt/PKB signaling pathway ,business.industry ,Stomach neoplasms ,Gastroenterology ,Flow cytometry ,Blot ,03 medical and health sciences ,0302 clinical medicine ,Protein kinase B ,Oncology ,Apoptosis ,LETM1 protein, human ,030220 oncology & carcinogenesis ,medicine ,Cancer research ,Original Article ,030211 gastroenterology & hepatology ,business ,Phosphatidylinositol 3 kinase ,PI3K/AKT/mTOR pathway - Abstract
Purpose Globally, there is a high incidence of gastric cancer (GC). Leucine zipper-EF-hand containing transmembrane protein 1 (LETM1) is reported to play a vital role in several human malignancies. However, there is limited understanding of the role of LETM1 in GC. This study aims to investigate the effects of LETM1 on proliferation, migration, and invasion of GC cells. Materials and methods The expression levels of LETM1 in the normal gastric mucosal epithelial cells (GES-1) and GC cells were analyzed by quantitative real-time polymerase chain reaction and western blotting. CCK-8, wound healing, and Transwell invasion assays were performed to evaluate the effect of LETM1 knockdown or overexpression on the proliferation, migration, and invasion of the GC cells, respectively. Additionally, the effect of LETM1 knockdown or overexpression on GC cell apoptosis was determined by flow cytometry. Furthermore, the effect of LETM1 knockdown or overexpression on the expression levels of PI3K/Akt signaling pathway-related proteins was evaluated by western blotting. Results The GC cells exhibited markedly higher mRNA and protein expression levels of LETM1 than the GES-1 cells. Additionally, the knockdown of LETM1 remarkably suppressed the GC cell proliferation, migration, and invasion, and promoted the apoptosis of GC cells, which were reversed upon LETM1 overexpression. Furthermore, the western blotting analysis indicated that LETM1 facilitates GC progression via the PI3K/Akt signaling pathway. Conclusions LETM1 acts as an oncogenic gene to promote GC cell proliferation, migration, and invasion via the PI3K/Akt signaling pathway. Therefore, LETM1 may be a potential target for GC diagnosis and treatment.
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- 2020
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19. MRI tumor segmentation with densely connected 3D CNN
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Chenliang Xu, Yue Wu, Lele Chen, Axel Wismüller, Adora M. DSouza, and Anas Z. Abidin
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medicine.diagnostic_test ,business.industry ,Computer science ,Pattern recognition ,Magnetic resonance imaging ,computer.software_genre ,medicine.disease ,Convolutional neural network ,030218 nuclear medicine & medical imaging ,Schema (genetic algorithms) ,03 medical and health sciences ,0302 clinical medicine ,Voxel ,Glioma ,medicine ,Contextual information ,Segmentation ,Artificial intelligence ,business ,computer ,030217 neurology & neurosurgery ,Tumor segmentation - Abstract
Glioma is one of the most common and aggressive types of primary brain tumors. The accurate segmentation of subcortical brain structures is crucial to the study of gliomas in that it helps the monitoring of the progression of gliomas and aids the evaluation of treatment outcomes. However, the large amount of required human labor makes it difficult to obtain the manually segmented Magnetic Resonance Imaging (MRI) data, limiting the use of precise quantitative measurements in the clinical practice. In this work, we try to address this problem by developing a 3D Convolutional Neural Network (3D CNN) based model to automatically segment gliomas. The major difficulty of our segmentation model comes with the fact that the location, structure, and shape of gliomas vary significantly among different patients. In order to accurately classify each voxel, our model captures multiscale contextual information by extracting features from two scales of receptive fields. To fully exploit the tumor structure, we propose a novel architecture that hierarchically segments different lesion regions of the necrotic and non-enhancing tumor (NCR/NET), peritumoral edema (ED) and GD-enhancing tumor (ET). Additionally, we utilize densely connected convolutional blocks to further boost the performance. We train our model with a patch-wise training schema to mitigate the class imbalance problem. The proposed method is validated on the BraTS 2017 dataset1 and it achieves Dice scores of 0.72, 0.83 and 0.81 for the complete tumor, tumor core and enhancing tumor, respectively. These results are comparable to the reported state-of-the-art results, and our method is better than existing 3D-based methods in terms of compactness, time and space efficiency.
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- 2018
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20. The impact of baseline calcified plaque volume on coronary rapid plaque progression by serial coronary computed tomography angiography in patients with type 2 diabetes
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Zhijie Jian, Guolin Yao, Huafeng Guo, Hui Liu, Bolin Li, Bolang Yu, Jian Yang, and Lele Cheng
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Calcified plaque volume ,rapid plaque progression ,diabetes ,coronary computed tomography angiography ,Medicine - Abstract
AbstractObjectives Patients with type 2 diabetes mellitus (T2DM) are susceptible to coronary artery disease (CAD), and coronary outcomes in these patients are heterogeneous. However, the impact of coronary plaque compositions on rapid plaque progression (RPP) in patients with T2DM has rarely been reported. This study aimed to investigate the association of coronary plaque compositions with rapid lesion volume progression in patients with T2DM.Materials and Methods A total of 159 subjects (aged 62.51 ± 10.3 years, 68.6% were male) who underwent serial coronary computed tomography angiography (CCTA) with type 2 diabetic status were enrolled. Annual change of plaque volume (PV) (mm3/year) was defined as PV change divided by inter-scan period. RPP was defined as the progression of plaque burden (PV divided by vessel volume multiplied by 100) ≥0.59%/year. Plaque components were compared between RPP and no RPP groups. Then all patients were divided into 3 groups according to the baseline calcified plaque volume tertiles. The outcome was whether RPP occurred.Results The median inter-scan period was 2.09 (range 1.41–3.33) years. The overall incidence of RPP was 61.0%. The calcified plaque volume decreased significantly in the RPP group as compared to the no RPP group. The risk of RPP (odds ratio [OR] 0.39; 95% confidence interval [CI]: 0.17-0.88; p = 0.024) was reduced in tertiles III as compared to that in tertiles I even after adjustment for baseline variables (OR 0.21; 95% CI: 0.07–0.63; p = 0.005). Moreover, adding the calcified plaque volume significantly raised the predictive value for the RPP (0.370, p = 0.030, and 0.059, p = 0.025, NRI, and IDI respectively) as compared to traditional factors.Conclusion The baseline calcified plaque volume is an independent protective factor for the rapid progression of coronary atherosclerosis in patients with T2DM.
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- 2023
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21. Toward a visual assistive listening device: Real-time synthesis of a virtual talking face from acoustic speech using deep neural networks
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Zhiyao Duan, Zhiheng Li, Emre Eskimez, Chenliang Xu, Ross K. Maddox, and Lele Chen
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Speech perception ,Acoustics and Ultrasonics ,Computer science ,Speech recognition ,media_common.quotation_subject ,Speech corpus ,Speech comprehension ,Background noise ,Assistive listening device ,medicine.anatomical_structure ,Arts and Humanities (miscellaneous) ,Rule-based machine translation ,Phone ,Tongue ,Perception ,medicine ,Active listening ,Sensory cue ,media_common - Abstract
Speech perception is a crucial function of the human auditory system, but speech is not only an acoustic signal—visual cues from a talker’s face and articulators (lips, teeth, and tongue) carry considerable linguistic information. These cues offer substantial and important improvements to speech comprehension when the acoustic signal suffers degradations like background noise or impaired hearing. However, useful visual cues are not always available, such as when talking on the phone or listening to a podcast. We are developing a system for generating a realistic speaking face from speech audio input. The system uses novel deep neural networks trained on a large audio-visual speech corpus. It is designed to run in real time so that it can be used as an assistive listening device. Previous systems have shown improvements in speech perception only for the most degraded speech. Our design differs notably from earlier ones in that it does not use a language model—instead, it makes a direct transformation from speech audio to face video. This allows the temporal coherence between the acoustic and visual modalities to be preserved, which has been shown to be crucial to cross-modal perceptual binding.
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- 2018
- Full Text
- View/download PDF
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