64 results on '"Mengdie Hu"'
Search Results
2. Enhancing kiwifruit flower pollination detection through frequency domain feature fusion: a novel approach to agricultural monitoring
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Fei Pan, Mengdie Hu, Xuliang Duan, Boda Zhang, Pengjun Xiang, Lan Jia, Xiaoyu Zhao, and Dawei He
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YOLO ,frequency domain feature fusion ,BRA ,kiwifruit flower ,precision agriculture deleted ,Plant culture ,SB1-1110 - Abstract
The pollination process of kiwifruit flowers plays a crucial role in kiwifruit yield. Achieving accurate and rapid identification of the four stages of kiwifruit flowers is essential for enhancing pollination efficiency. In this study, to improve the efficiency of kiwifruit pollination, we propose a novel full-stage kiwifruit flower pollination detection algorithm named KIWI-YOLO, based on the fusion of frequency-domain features. Our algorithm leverages frequency-domain and spatial-domain information to improve recognition of contour-detailed features and integrates decision-making with contextual information. Additionally, we incorporate the Bi-Level Routing Attention (BRA) mechanism with C3 to enhance the algorithm’s focus on critical areas, resulting in accurate, lightweight, and fast detection. The algorithm achieves a mAP0.5 of 91.6% with only 1.8M parameters, the AP of the Female class and the Male class reaches 95% and 93.5%, which is an improvement of 3.8%, 1.2%, and 6.2% compared with the original algorithm. Furthermore, the Recall and F1-score of the algorithm are enhanced by 5.5% and 3.1%, respectively. Moreover, our model demonstrates significant advantages in detection speed, taking only 0.016s to process an image. The experimental results show that the algorithmic model proposed in this study can better assist the pollination of kiwifruit in the process of precision agriculture production and help the development of the kiwifruit industry.
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- 2024
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3. Research progress on the biosynthesis, activity and application of natural tetrapyrrole compounds
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Mengdie Hu, Xianwen Lu, Song Qin, Runze Liu, Qi Wang, Chenyang Lu, and Wenjun Li
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Tetrapyrrole compounds ,Biosynthesis ,Functional evolution ,Biological activity ,Optical application ,Chemistry ,QD1-999 - Abstract
Tetrapyrrole compounds play vital roles in the life processes of animals and plants, such as respiration and photosynthesis, due to their functions in light energy capture and transmission, signal transduction, binding and transport of oxygen, their research originated from the study of heme and chlorophyll chemistry. The special structure of tetrapyrrole determines its various properties, which contribute to its antioxidant, anti-inflammatory, antitumoral, antibacterial, neuroprotective and other biological activities. Although many functions of tetrapyrrole compounds have been excavated and utilized, there is a lack of a complete system to summarize them. This review summarizes the biosynthesis, functional evolution, biological activities and optical applications of tetrapyrrole compounds based on existing research on tetrapyrrole compounds.
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- 2024
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4. The genetic and clinical characteristics of WFS1 related diabetes in Chinese early onset type 2 diabetes
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Yating Li, Siqian Gong, Meng Li, Xiaoling Cai, Wei Liu, Simin Zhang, Yumin Ma, Yingying Luo, Lingli Zhou, Xiuying Zhang, Xiuting Huang, Xueying Gao, Mengdie Hu, Yufeng Li, Qian Ren, Yanai Wang, Xianghai Zhou, Xueyao Han, and Linong Ji
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Medicine ,Science - Abstract
Abstract Diabetes is one of the most common phenotypes of Wolfram syndrome owing to the presence of the variants of the WFS1 gene and is often misdiagnosed as other types of diabetes. We aimed to explore the prevalence of WFS1-related diabetes (WFS1-DM) and its clinical characteristics in a Chinese population with early-onset type 2 diabetes (EOD). We sequenced all exons of the WFS1 gene in 690 patients with EOD (age at diagnosis ≤ 40 years) for rare variants. Pathogenicity was defined according to the standards and guidelines of the American College of Medical Genetics and Genomics. We identified 33 rare variants predicted to be deleterious in 39 patients. The fasting [1.57(1.06–2.22) ng/ml] and postprandial C-peptide levels [2.8(1.75–4.46) ng/ml] of the patients with such WFS1 variations were lower than those of the patients without WFS1 variation [2.09(1.43–3.05) and 4.29(2.76–6.07) respectively, ng/ml]. Six (0.9%) patients carried pathogenic or likely pathogenic variants; they met the diagnostic criteria for WFS1-DM according to the latest guidelines, but typical phenotypes of Wolfram syndrome were seldom observed. They were diagnosed at an earlier age and usually presented with an absence of obesity, impaired beta cell function, and the need for insulin treatment. WFS1-DM is usually mistakenly diagnosed as type 2 diabetes, and genetic testing is helpful for individualized treatment.
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- 2023
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5. CSI Feedback Model Based on Multi-Source Characterization in FDD Systems
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Fei Pan, Xiaoyu Zhao, Boda Zhang, Pengjun Xiang, Mengdie Hu, and Xuesong Gao
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CSI feedback ,neural network ,FDD ,deep learning ,wireless communication ,Chemical technology ,TP1-1185 - Abstract
In wireless communication, to fully utilize the spectrum and energy efficiency of the system, it is necessary to obtain the channel state information (CSI) of the link. However, in Frequency Division Duplexing (FDD) systems, CSI feedback wastes part of the spectrum resources. In order to save spectrum resources, the CSI needs to be compressed. However, many current deep-learning algorithms have complex structures and a large number of model parameters. When the computational and storage resources are limited, the large number of model parameters will decrease the accuracy of CSI feedback, which cannot meet the application requirements. In this paper, we propose a neural network-based CSI feedback model, Mix_Multi_TransNet, which considers both the spatial characteristics and temporal sequence of the channel, aiming to provide higher feedback accuracy while reducing the number of model parameters. Through experiments, it is found that Mix_Multi_TransNet achieves higher accuracy than the traditional CSI feedback network in both indoor and outdoor scenes. In the indoor scene, the NMSE gains of Mix_Multi_TransNet are 4.06 dB, 4.92 dB, 4.82 dB, and 6.47 dB for compression ratio η = 1/8, 1/16, 1/32, 1/64, respectively. In the outdoor scene, the NMSE gains of Mix_Multi_TransNet are 3.63 dB, 6.24 dB, 4.71 dB, 4.60 dB, and 2.93 dB for compression ratio η = 1/4, 1/8, 1/16, 1/32, 1/64, respectively.
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- 2023
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6. Transcriptomic and metabolomic joint analysis reveals distinct flavonoid biosynthesis regulation for variegated testa color development in peanut (Arachis hypogaea L.)
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Mengdie Hu, Jiawei Li, Mingyu Hou, Xiaoqing Liu, Shunli Cui, Xinlei Yang, Lifeng Liu, Xiaoxia Jiang, and Guojun Mu
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Medicine ,Science - Abstract
Abstract Peanut is one of the important oil and economic crops, among which the variegated testa peanut is a unique member. The molecular mechanisms underlying the pigment synthesis in variegated testa are still unclear. Differentially expressed genes (DEGs) in the flavonoid metabolism pathway in pigmented areas indicated that there were 27 DEGs highly related to the synthesis of variegated testa color among 1,050 DEGs. Of these 27, 13 were up-regulated and 14 were down-regulated, including 3 PALs, 1 C4H, 2 CHSs, 1 F3H, 1 F3'H, 2 DFRs, 2 LARs, 2 IAAs, 4 bHLHs, and 9 MYBs. GO (Gene Ontology) analysis indicated that DEGs were similarly enriched in three branches. KEGG (Kyoto Encyclopedia of Genes and Genomes) analysis suggested flavonoid biosynthesis is the most direct metabolic pathway for the synthesis of testa variegation. The liquid chromatography–tandem mass spectrometry (LC–MS/MS) results showed that cyanidin and delphinidin were the primary metabolites that caused the color differences between the pigmented and the non-pigmented areas. Through the verification of 20 DEGs via qPCR, the results were consistent with transcriptome sequencing in four comparison groups. The results in this study lay the foundation for revealing the molecular regulation mechanisms of flavonoid synthesis in variegated testa peanut.
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- 2021
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7. Corrigendum: Multi-Omics and miRNA Interaction Joint Analysis Highlight New Insights Into Anthocyanin Biosynthesis in Peanuts (Arachis hypogaea L.)
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Jiawei Li, Yucong Ma, Mengdie Hu, Yulu Zhao, Bin Liu, Chunmei Wang, Min Zhang, Liping Zhang, Xinlei Yang, and Guojun Mu
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peanut ,anthocyanin ,testa ,multi-omics joint analysis ,miRNA interaction ,qRT-PCR ,Plant culture ,SB1-1110 - Published
- 2022
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8. Multi-Omics and miRNA Interaction Joint Analysis Highlight New Insights Into Anthocyanin Biosynthesis in Peanuts (Arachis hypogaea L.)
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Jiawei Li, Yucong Ma, Mengdie Hu, Yulu Zhao, Bin Liu, Chunmei Wang, Min Zhang, Liping Zhang, Xinlei Yang, and Guojun Mu
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peanut ,anthocyanin ,testa ,multi-omics joint analysis ,miRNA interaction ,qRT-PCR ,Plant culture ,SB1-1110 - Abstract
Peanut (Arachis hypogaea L.) is one of the most important economic and oil crops in the world. At present, peanut varieties with rich anthocyanin in testa are rare in the market, but the selection and breeding of varieties with the related traits has always attracted the attention of breeders. In this study, two peanut varieties with the pink and purple testa, G110 (G) and Z18-40 (Z) were used to conduct interaction joint analysis of multi-omics and miRNA-target gene. The anthocyanin content of Z18-40 was 7.49–8.62-folds higher than G110 on 30 DAF (days after flowering) and 45 DAF via Ultraviolet-visible Spectrophotometer (UV-5800, Shanghai, China). And then, a total of 14 candidate genes related with the anthocyanin biosynthesis were identified for correlation in different comparison groups (R2 ≥ 0.80), among of a novel gene Ah21440 related with hydroxycinnamoyl transferase (HCT) biosynthesis was identified. In addition, Cyanidin 3-O-glucoside (Kuromanin, pmb0550) was the only common differentially accumulated metabolite (DAM) identified using multi-omics joint analysis in G1_vs_G2, Z1_vs_Z2, G1_vs_Z1, and G2_vs_Z2, respectively. Correlation analysis of miRNA-target genes and DEGs in the transcriptome shows that, AhmiR2950, AhmiR398, AhmiR50, and AhmiR51 regulated to HCT and chalcone biosynthesis related candidate genes (Ah21440, AhCHS, AhCHI). Lastly, all of 14 candidate genes and 4 differentially expressed miRNAs were validated using quantitative real-time PCR (qRT-PCR), which trends were consistent with that of the former transcriptome data. The results provide important reference for in-depth research on the anthocyanin metabolism mechanism in peanut testa.
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- 2022
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9. An Investigation on Local Shearing Mechanisms of Irregular Dentate Rock Joints Using the PFC
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Jiuyang Huan, Mingming He, Zhiqiang Zhang, and Mengdie Hu
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Geology ,QE1-996.5 - Abstract
Joint surfaces are widely distributed in natural rock mass, and their shear mechanical properties play an important role in determining the safety and stability of rock mass. Previous studies rarely discussed the contribution degree of different joint protrusions to resisting shear stress. In this study, seven irregular dentate joint profiles were proposed to represent the geometric morphology of natural joints. Joint samples were subjected to direct shear tests under constant normal stress using the particle flow code (PFC). First, the reliability of the research scheme was verified by routine test results. Secondly, based on the microcrack tracking module and the force chain analysis, the local failure modes of the joint sample after and during the shearing process are discussed in detail. The relationship between the shear stress and the number of microcracks was studied. Finally, based on the measuring circle function, the variation law of the mean stress at different joint protrusions during the shearing process was tracked. The maximum stress of each protrusion before the shear stress peak was introduced to quantitatively describe the contribution of local protrusions to shear stress. There was an important link between the size of the protrusion and the stress it can withstand. During the shearing process, the local shearing mechanism of the joint surface is controlled by the distribution of joint protrusions. The research results of this paper can provide a good idea for the follow-up joint surface research.
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- 2022
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10. The Effect of miRNA-Modified Exosomes in Animal Models of Spinal Cord Injury: A meta-Analysis
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Mengdie Hu, Zhidong Cao, and Dianming Jiang
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exosomes ,animal models ,spinal cord injury ,miRNA ,meta-analysis ,Biotechnology ,TP248.13-248.65 - Abstract
Background: Spinal cord injury (SCI) is currently not completely curable. Exosomes have been widely used in preclinical studies of spinal cord injury. Here, in this meta-analysis, we focused on evaluating the overall efficacy of therapies based on miRNA-modified exosomes on functional recovery in animal models of SCI.Methods: PubMed, embase and Web of Science library databases were searched. Relevant literature was included, and the random effects model was used to assess the overall effect of the intervention, with outcomes expressed as SMD. The primary outcome included motor function scores. Risk of bias (ROB) was assessed using the ROB tool of the Systematic Review Centre for Laboratory Animal Experimentation (SYRCLE). R version 4.1.1software and Review Manager software were used for meta-analysis.Results: A total of 11 preclinical studies were included. The meta-analysis revealed that miRNA-modified exosome therapy was effective in improving motor function scores compared with exosomes alone or control therapy (standardized mean difference: 4.21; 95% confidence interval: 3.39–5.04). There was significant asymmetry in the funnel plot, and trim-and-fill analysis revealed four unpublished studies of motor scores. The quality of all included studies was evaluated with SYRCLE’s ROB tool. The SCI model, administration time and dose had an impact on the effect of the treatment.Conclusion: MiRNA-modified exosomes have shown great potential in the treatment of SCI. Moreover, the efficacy of miRNA-modified exosomes was superior to that of exosomes alone.
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- 2022
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11. Effect of Heat Stress on Egg Production, Steroid Hormone Synthesis, and Related Gene Expression in Chicken Preovulatory Follicular Granulosa Cells
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Leyan Yan, Mengdie Hu, Lihong Gu, Mingming Lei, Zhe Chen, Huanxi Zhu, and Rong Chen
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heat stress ,granulosa cells ,progesterone ,estradiol ,StAR ,laying hens ,Veterinary medicine ,SF600-1100 ,Zoology ,QL1-991 - Abstract
This study was conducted to elucidate the molecular mechanisms underlying heat stress (HS)-induced abnormal egg-laying in laying hens. Hy-Line brown laying hens were exposed to HS at 32 °C or maintained at 22 °C (control) for 14 days. In addition, granulosa cells (GCs) from preovulatory follicles were subjected to normal (37 °C) or high (41 °C or 43 °C) temperatures in vitro. Proliferation, apoptosis, and steroidogenesis were investigated, and the expression of estrogen and progesterone synthesis-related genes was detected. The results confirmed that laying hens reared under HS had impaired laying performance. HS inhibited proliferation, increased apoptosis, and altered the GC ultrastructure. HS also elevated progesterone secretion by increasing the expression of steroidogenic acute regulatory protein (StAR), cytochrome P450 family 11 subfamily A member 1 (CYP11A1), and 3b-hydroxysteroid dehydrogenase (3β-HSD). In addition, HS inhibited estrogen synthesis in GCs by decreasing the expression of the follicle-stimulating hormone receptor (FSHR) and cytochrome P450 family 19 subfamily A member 1 (CYP19A1). The upregulation of heat shock 70 kDa protein (HSP70) under HS was also observed. Collectively, laying hens exposed to high temperatures experienced damage to follicular GCs and steroidogenesis dysfunction, which reduced their laying performance. This study provides a molecular mechanism for the abnormal laying performance of hens subjected to HS.
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- 2022
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12. New clinical screening strategy to distinguish HNF1A variant-induced diabetes from young early-onset type 2 diabetes in a Chinese population
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Yumin Ma, Siqian Gong, Xirui Wang, Xiaoling Cai, Xinhua Xiao, Weijun Gu, Jinkui Yang, Liyong Zhong, Jianzhong Xiao, Simin Zhang, Xianghai Zhou, Lingli Zhou, Yingying Luo, Qian Ren, Xiuting Huang, Xueying Gao, Qiuping Wang, Mengdie Hu, and Xueyao Han
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Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
ObjectiveMaturity-onset diabetes of the young caused by hepatocyte nuclear factor-1 alpha (HNF1A) variants (HNF1A-MODY) is a common form of monogenetic diabetes. Although patients with HNF1A-MODY might specifically benefit from sulfonylurea treatment, available methods for screening this specific type of diabetes are not cost-effective. This study was designed to establish an optimized clinical strategy based on multiple biomarkers to distinguish patients with HNF1A-MODY from clinically diagnosed early-onset type 2 diabetes (EOD) for genetic testing in a Chinese population.Research design and methodsA case–control study including 125 non-related young patients with EOD and 15 probands with HNF1A-MODY (cohort 1) was conducted to evaluate reported biomarkers for HNF1A-MODY. A cut-off for the fasting insulin (Fins) level, the 97.5 percentile of 150 healthy subjects with normal components of metabolic syndrome (cohort 2), was used to filter out individuals with obvious insulin resistance (Fins 1.12 mmol/L), the sensitivity and specificity of HNF1A-CSS were 100% and 69.3%, respectively. In the pooled analysis of all young patients, HNF1A-CSS displayed 90.5% sensitivity and 73.6% specificity for identifying patients with HNF1A-MODY among those with clinically diagnosed EOD.ConclusionOur HNF1A-CSS is useful for distinguishing patients with HNF1A-MODY from patients with EOD in a young Chinese population.
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- 2020
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13. Effect of Hemoglobin A1c Reduction or Weight Reduction on Blood Pressure in Glucagon‐Like Peptide‐1 Receptor Agonist and Sodium‐Glucose Cotransporter‐2 Inhibitor Treatment in Type 2 Diabetes Mellitus: A Meta‐Analysis
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Mengdie Hu, Xiaoling Cai, Wenjia Yang, Simin Zhang, Lin Nie, and Linong Ji
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blood pressure ,glucagon‐like peptide‐1 receptor agonists ,meta‐analysis ,sodium‐glucose cotransporter‐2 inhibitors ,type 2 diabetes mellitus ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background Glucagon‐like peptide‐1 receptor agonists (GLP‐1RAs) and sodium‐glucose cotransporter‐2 inhibitors (SGLT2is) have shown their beneficial effects on cardiovascular outcomes and multiple cardiovascular risk factors, including hypertension. However, the mechanism of blood pressure (BP)–lowering effects of these agents has not been elucidated. This study aims to evaluate the effect of hemoglobin A1c reduction or body weight reduction with GLP‐1RA treatment and SGLT2i treatment on BP changes in patients with type 2 diabetes mellitus. Methods and Results Studies were identified by a search of MEDLINE, EMBASE, and the Cochrane Central Register until June 2019. Meta‐regression analysis was performed to evaluate the association between hemoglobin A1c reduction or body weight reduction and changes of BP. A total of 184 trials were included. Both GLP‐1RA and SGLT2i led to significant reductions in systolic BP (weighted mean difference, −2.856 and −4.331 mm Hg, respectively; P
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- 2020
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14. Building Personalized Trust: Discovering What Makes One Trust and Act on Facebook Posts.
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Michelle X. Zhou, Huahai Yang, Gloria Mark, Mengdie Hu, Jalal Mahumd, and Aditya Pal
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- 2021
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15. The Hub Genes Related to Osteoporosis Were Identified by Bioinformatics Analysis
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Mengdie Hu, Hong Ding, Rui Chao, and Zhidong Cao
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Article Subject ,General Immunology and Microbiology ,General Medicine ,General Biochemistry, Genetics and Molecular Biology - Abstract
Osteoporosis (OP) is commonly encountered, which is a kind of systemic injury of bone mass and microstructure, leading to brittle fractures. With the aging of the population, this disease will pose a more serious impact on medical, social, and economic aspects, especially postmenopausal osteoporosis (PMOP). This study is aimed at figuring out potential therapeutic targets and new biomarkers in OP via bioinformatics tools. After differentially expressed gene (DEG) analysis, we successfully identified 97 upregulated and 172 downregulated DEGs. They are mainly concentrated in actin binding, regulation of cytokine production, muscle cell promotion, chemokine signaling pathway, and cytokine-cytokine receiver interaction. According to the diagram of protein-protein interaction (PPI), we obtained 10 hub genes: CCL5, CXCL10, EGFR, HMOX1, IL12B, CCL7, TBX21, XCL1, PGR, and ITGA1. Expression analysis showed that Egfr, Hmox1, and Pgr were significantly upregulated in estrogen-treated osteoporotic patients, while Ccl5, Cxcl10, Il12b, Ccl7, Tbx21, Xcl1, and Itga1 were significantly downregulated. In addition, the analysis results of Pearson’s correlation revealed that CCL7 has a strong positive association with IL12b, TBX21, and CCL5 and so was CCL5 with IL12b. Conversely, EGFR has a strong negative association with XCL1 and CXCL10. In conclusion, this study screened 10 hub genes related to OP based on the GEO database, laying a biological foundation for further research on new biomarkers and potential therapeutic targets in OP.
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- 2023
16. Visualizing Social Media Content with SentenTree.
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Mengdie Hu, Krist Wongsuphasawat, and John T. Stasko
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- 2017
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17. Characterization of oxidative stress-induced cgahp, a gene coding for alkyl hydroperoxide reductase, from industrial importance Corynebacterium glutamicum
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meiru Si, mengdie Hu, Mingfei Yang, Zhaoxin Peng, Donghan Li, and yuying Zhao
- Abstract
Alkyl hydroperoxide reductase (Ahp), comprised of four different subunits AhpC, AhpD, AhpE, and AhpF, is a thiol-based antioxidative enzyme with the ability to protect bacteria against oxidative stress. Functionally, AhpC and AhpE considered as peroxidases directly detoxify peroxides, while AhpD and AhpF as oxidoreductases restore oxidized peroxidases to their reduced form. Corynebacterium glutamicum ncgl0877 encodes a putative Ahp with a unique Cys-Pro-Phe-Cys (C-P-G-C) active-site motif, similar with those of the thiol-disulfide oxidoreductases such as thioredoxin (Trx), mycoredoxin-1 (Mrx1) and AhpD. However, its physiological and biochemical functions remain unknown in C. glutamicum. Here, we report that NCgl0877, designated CgAhp, is involved in the protection against organic peroxide (OP) stress. The cgahp-deleted strain is notably more sensitive to OP stress. The cgahp expression is controlled by a MarR-type transcriptional repressor OasR (organic peroxide- and antibiotic-sensing regulator). The physiological role of CgAhp in resistance to OP stresses is corroborated by its induced expression under stresses. Although CgAhp has a weak peroxidase activity toward OP, it mainly supports the OP-scavenging activity of the thiol-dependent peroxidase preferentially linked to the dihydrolipoamide dehydrogenase (Lpd)/dihydrolipoamide succinyltransferase (SucB)/NADH system. The C-P-G-C motif of CgAhp is essential to maintain the reductase activity. In conclusion, our study identifies CgAhp, behaving like AhpD, as a key disulfide oxidoreductase involved in the oxidative stress tolerance and the functional electron donor for peroxidase.
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- 2023
18. Mobile phone use addiction, insomnia, and depressive symptoms in adolescents from ethnic minority areas in China: A latent variable mediation model
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Honglv, Xu, primary, Jian, Tao, additional, Jiaxing, Yang, additional, Yunpeng, Su, additional, Chuanzhi, Xu, additional, Mengdie, Hu, additional, Lum, Gillian Gianna Anne, additional, Dongyue, Hu, additional, and Lin, Lu, additional
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- 2023
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19. OpinionBlocks: A Crowd-Powered, Self-improving Interactive Visual Analytic System for Understanding Opinion Text.
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Mengdie Hu, Huahai Yang, Michelle X. Zhou, Liang Gou, Yunyao Li 0001, and Eben M. Haber
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- 2013
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20. Breaking news on twitter.
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Mengdie Hu, Shixia Liu, Furu Wei, Yingcai Wu, John T. Stasko, and Kwan-Liu Ma
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- 2012
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21. Expression and clinical significance of FGFR1 and FGFR2 in laryngeal squamous cell carcinoma
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Mengdie Hu and Shujun Zhang
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Cancer Research ,Oncology ,Radiology, Nuclear Medicine and imaging - Abstract
Fibroblast growth factor receptor 1 (FGFR1) and fibroblast growth factor receptor 2 (FGFR2) may be of significance in the development of laryngeal squamous cell carcinoma (SCC) tissues. Examination of the expression results of these factors may offer new insights into treatment of the disease, such as genetic and histological targeted target therapy.We selected tissue from 30 cases of laryngeal SCC, 23 cases of adjacent normal mucosa, and 26 cases of benign laryngeal mucosal tissues from patients who received surgery at the Otolaryngology Department of the Affiliated Hospital of Chengde Medical College between September 2020 and January 2022. The laryngeal cancers included nine cases of supraglottic, 20 glottic (vocal cord), and one case of subglottic cancer, while all benign laryngeal mucosal lesions were obtained from vocal cord polyps. The expression of FGFR1 and FGFR2 was detected in 30 laryngeal cancers, 23 adjacent normal mucosa, and 26 vocal cord polyps by immunohistochemical technology [immunohistochemistry (IHC)], and the correlation analysis of their expression in laryngeal cancer was performed. P0.05 was represented statistically significant.The expression of FGFR1 and FGFR2 was significantly different in laryngeal SCC and the normal tissue0.5 cm from the tumor margin (P0.05), and between laryngeal SCC and vocal polyps (P0.05). There was no difference in FGFR1 and FGFR2 expression (P0.05) between normal mucosal margins and vocal cord polyp tissue, and no correlation between FGFR1 and FGFR2 in laryngeal SCC and sex, age, smoking history, alcohol consumption history, tumor diameter, tumor lymph node metastasis, tumor differentiation degree, and Tumor-Node-Metastasis (TNM) stage (P0.05), A moderate positive correlation between FGFR1 expression and FGFR2 expression in laryngeal SCC was seen (Rs=0.499, P0.01).FGFR1 and FGFR2 may participate in the occurrence of SCC of the throat: (I) positive FGFR1 and FGFR2 expressions are not associated with gender, age, smoking history, alcohol consumption history, tumor diameter, lymph node metastasis, degree of differentiation, or TNM stage. (II) FGFR2 increases successively with higher FGFR1 expression and with a positive correlation in laryngeal SCC.
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- 2022
22. Fibroblast-Derived Extracellular Vesicle-Packaged Long Noncoding RNA Upregulated in Diabetic Skin Enhances Keratinocyte MMP-9 Expression and Delays Diabetic Wound Healing
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Yuxi Wu, Xiaoying Wu, Jiahuan Wang, Sifan Chen, Hongxing Chen, Jing Liu, Tingting Zeng, Mengdie Hu, Ying Liang, Kan Sun, Chuan Yang, Li Yan, and Meng Ren
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Cell Biology ,Molecular Biology ,Pathology and Forensic Medicine - Published
- 2023
23. Understanding Interfirm Relationships in Business Ecosystems with Interactive Visualization.
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Rahul C. Basole, Trustin A. Clear, Mengdie Hu, Harshit Mehrotra, and John T. Stasko
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- 2013
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24. Study on local shear mechanism in direct shear test of rough rock joints based on DEM
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Jiuyang Huan, Zhiqiang Zhang, Mingming He, Ning Li, and Mengdie Hu
- Abstract
Rough joints widely exist in natural rock mass, and their shear mechanical properties control the safety and stability of rock mass. In the existing studies, the contribution of different protrusions to resisting shear stress is not mentioned. In this study, the local shear mechanism of different protrusions of rough joints in the shear process were well presented by combining quantitative and qualitative results using the discrete element method (DEM). Firstly, Barton's 10 standard roughness joint profiles were digitized. Rough joints were established using the modified smooth joint model (MSJM). The direct shear tests of joint specimens under constant normal stress were successfully conducted based on servo mode. Secondly, according to the test results, the law of shear stress was discussed. Then, the failure mode of joint specimen was discussed in detail based on the crack tracking module and force chain analysis. Next, the relationship between the number of cracks and shear stress was investigated. Finally, the variation law of average stress in different 10 segments of joints during shear was tracked based on the measuring circle function. The contribution of local joint segments in resisting shear stress is quantitatively described by 3 stress indexes.
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- 2022
25. Social support can alleviate the fear of cancer recurrence in postoperative patients with lung carcinoma
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Wei, Zheng, Mengdie, Hu, and Yan, Liu
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Original Article - Abstract
Objective: To explore the status and influencing factors of the fear of cancer recurrence (FCR) in postoperative patients with lung carcinoma (LC). Methods: The survey results of 219 LC patients who underwent surgical treatment in a tertiary grade A cancer hospital in Beijing from January 2020 to September 2021 were retrospectively analyzed by using the general information questionnaire, Social Support Rating Scale (SSRS), and the Fear of Progression Questionnaire-Short Form (FoP-Q-SF). Results: The score of the FoP-Q-SF was (25.68±3.15 points) in postoperative LC patients, and education level and per capita monthly household income were identified as the independent risk factors affecting FCR. There was an inverse correlation between FCR and social support in postoperative LC patients (P
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- 2022
26. Research on Ideological and Political Construction of Physical Education Curriculum from the Perspective of Dissipative Structure Theory
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Lan Pang and Mengdie Hu
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- 2022
27. Visual Analytics for Converging-Business-Ecosystem Intelligence.
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Rahul C. Basole, Mengdie Hu, Pritesh Patel, and John T. Stasko
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- 2012
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28. TET2-interacting long noncoding RNA promotes active DNA demethylation of the MMP-9 promoter in diabetic wound healing
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Meng Ren, Shicheng Su, Tingting Zeng, Xiaoyi Wang, Mengdie Hu, Wei Wang, Li Yan, Kan Sun, Liyan Zhou, Chuan Wang, Jing Liu, and Chuan Yang
- Subjects
0301 basic medicine ,Cancer Research ,Immunology ,Translocation, Genetic ,Article ,Dioxygenases ,03 medical and health sciences ,Cellular and Molecular Neuroscience ,0302 clinical medicine ,Downregulation and upregulation ,Transcription (biology) ,Proto-Oncogene Proteins ,Diabetes Mellitus ,Humans ,lcsh:QH573-671 ,Promoter Regions, Genetic ,Demethylation ,Wound Healing ,DNA methylation ,Chemistry ,lcsh:Cytology ,Cell Biology ,Subcellular localization ,Long non-coding RNA ,Cell biology ,DNA Demethylation ,DNA-Binding Proteins ,030104 developmental biology ,DNA demethylation ,Matrix Metalloproteinase 9 ,DNA glycosylase ,Long non-coding RNAs ,RNA, Long Noncoding ,Wound healing ,030217 neurology & neurosurgery - Abstract
Wound healing in diabetic skin is impaired by excessive activation of matrix metalloproteinase-9 (MMP-9). MMP-9 transcription is activated by Ten-eleven translocation 2 (TET2), a well-known DNA demethylation protein that induces MMP-9 promoter demethylation in diabetic skin tissues. However, how TET2 is targeted to specific loci in the MMP-9 promoter is unknown. Here, we identified a TET2-interacting long noncoding RNA (TETILA) that is upregulated in human diabetic skin tissues. TETILA regulates TET2 subcellular localization and enzymatic activity, indirectly activating MMP-9 promoter demethylation. TETILA also recruits thymine-DNA glycosylase (TDG), which simultaneously interacts with TET2, for base excision repair-mediated MMP-9 promoter demethylation. Together, our results suggest that the TETILA serves as a genomic homing signal for TET2-mediated demethylation specific loci in MMP-9 promoter, thereby disrupting the process of diabetic skin wound healing.
- Published
- 2019
29. Author response for 'A Variation in SORBS1 is Associated with Type 2 Diabetes and High‐density Lipoprotein Cholesterol in Chinese Population'
- Author
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null Siqian Gong, null Shaofeng Huo, null Yingying Luo, null Yufeng Li, null Yumin Ma, null Xiuting Huang, null Mengdie Hu, null Wei Liu, null Rui Zhang, null Xiaoling Cai, null Lingli Zhou, null Ling Chen, null Qian Ren, null Simin Zhang, null Yu Zhu, null Xiuying Zhang, null Jing Chen, null Jing Wu, null Xianghai Zhou, null Xu Lin, null Xueyao Han, and null Linong Ji
- Published
- 2021
30. A variation in SORBS1 is associated with type 2 diabetes and high-density lipoprotein cholesterol in Chinese population
- Author
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Siqian Gong, Shaofeng Huo, Yingying Luo, Yufeng Li, Yumin Ma, Xiuting Huang, Mengdie Hu, Wei Liu, Rui Zhang, Xiaoling Cai, Lingli Zhou, Ling Chen, Qian Ren, Simin Zhang, Yu Zhu, Xiuying Zhang, Jing Chen, Jing Wu, Xianghai Zhou, Xu Lin, Xueyao Han, and Linong Ji
- Subjects
China ,Endocrinology ,Asian People ,Diabetes Mellitus, Type 2 ,Endocrinology, Diabetes and Metabolism ,Cholesterol, HDL ,Microfilament Proteins ,Internal Medicine ,Humans ,Insulin ,Female - Abstract
Sorbin and SH3-domain-containing-1 (SORBS1) play important roles in insulin signalling and cytoskeleton regulation. Variants of the SORBS1 gene have been inconsistently reported to be associated with type 2 diabetes or diabetic kidney disease (DKD).Two independent case-control studies based on two randomized sampling cohorts (cohort 1, n = 3345; cohort 2, n = 2282) were used to confirm the association between rs2281939 of SORBS1 and impaired glucose regulation (IGR). An additional hospital-based cohort (cohort 3, n = 2135) and cohort 1 were used to investigate the association between rs2281939 and DKD. The phenotype of rare variants of SORBS1 was explored in 453 patients with early onset type 2 diabetes (diagnosed before 40 years of age, EOD).The G allele was associated with type 2 diabetes (additive model: OR = 1.25, 95% CI [1.03-1.52], p = 0.022) in cohort 1, and IGR in cohort 2 (additive model: OR = 1.22, 95% CI [1.05-1.43], p = 0.01). We found that the G allele was also associated with HDL-c levels in women in both cohort 1 (p = 0.03) and 2 (p = 0.029) in the dominant model. The rare variant carriers also had lower HDL-c and LDL-c levels than non-carriers in patients with EOD. No association between rs2281939 or rare variants and DKD was observed.The variants in the SORBS1 gene were associated with IGR and HDL-c levels but not with DKD in the Chinese Han population.
- Published
- 2021
31. Multi-Omics and miRNA Interaction Joint Analysis Highlight New Insights Into Anthocyanin Biosynthesis in Peanuts (
- Author
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Jiawei, Li, Yucong, Ma, Mengdie, Hu, Yulu, Zhao, Bin, Liu, Chunmei, Wang, Min, Zhang, Liping, Zhang, Xinlei, Yang, and Guojun, Mu
- Abstract
Peanut (
- Published
- 2021
32. Shearer parameter optimization and low energy consumption mining based on 3D point cloud characterization of coal wall
- Author
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Haijian Wang, Xingrui Fan, and Mengdie Huang
- Subjects
3D point cloud ,cutting depth ,cutting specific energy consumption ,regression model ,shearer ,Technology ,Science - Abstract
Abstract To achieve efficient and low energy consumption mining under different cutting depths of a shearer, a multiparameter coupling optimization method for the shearer based on three‐dimensional (3D) characterization of the coal wall was proposed. First, a seven‐axis absolute articulated arm measuring machine was used to obtain 3D point cloud data of the coal wall, and then the 3D of the coal wall surface was reconstructed by using segmentation, filtering, and stitching processing, thereby obtaining the average thickness of different coal wall areas. Second, through the quadratic rotation regression orthogonal combination experiment, the optimal combination of drum speed, traction speed, and cutting depth was obtained, further obtaining the order of primary and secondary influences, and the regression model. Moreover, a particle swarm optimization algorithm was used to obtain the optimal drum speed and finally, the laboratory and field test experiments were conducted to verify the effectiveness of the proposed optimization algorithm in reducing the cutting energy consumption of shearer. The experiment results show that the given optimization algorithm can adaptively optimize the traction speed and drum speed based on the corresponding cutting depth, which significantly reduces the cutting specific energy consumption of the shearer. Thus, it provided an important technical means for the shearer to achieve low energy consumption and efficient mining.
- Published
- 2024
- Full Text
- View/download PDF
33. Exploring anomalies in GAStech: VAST 2014 Mini Challenge 1 and 2.
- Author
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Jaegul Choo, Yi Han 0005, Mengdie Hu, Hannah Kim 0001, James Nugent, Francesco Poggi, Haesun Park, and John T. Stasko
- Published
- 2014
- Full Text
- View/download PDF
34. Research on the Relationship between Data Empowerment and Service Innovation Capability of Logistics Platform Enterprise
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Yuhua Zhang and Mengdie Hu
- Subjects
Knowledge management ,Article Subject ,business.industry ,General Mathematics ,media_common.quotation_subject ,05 social sciences ,Big data ,General Engineering ,Questionnaire ,Theoretical research ,Engineering (General). Civil engineering (General) ,Moderation ,0502 economics and business ,Value (economics) ,QA1-939 ,050211 marketing ,Dynamism ,TA1-2040 ,Service innovation ,business ,Empowerment ,Mathematics ,050203 business & management ,media_common - Abstract
Based on the application of big data, this paper constructed a theoretical model focusing on the mechanism of data empowerment on the service innovation capability of logistics platform enterprises, with value cocreation as the mediating variable and environmental dynamism as the moderating variable. The research hypothesis was empirically tested based on the results obtained from the questionnaire survey. The results demonstrate that data empowerment can promote the value co-creation between logistics platform enterprises and users, and value co-creation is an important factor to promote the service innovation capability of logistics platform enterprises. Meanwhile, the moderating variable of environmental dynamism is found to inhibit the interaction between cooperation and service innovation capability. The findings expand the theoretical research on data empowerment and raise important inspiration for practical activities of logistics platform enterprises.
- Published
- 2021
- Full Text
- View/download PDF
35. MiR-195-5p and miR-205-5p in extracellular vesicles isolated from diabetic foot ulcer wound fluid decrease angiogenesis by inhibiting VEGFA expression
- Author
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Mengdie Hu, Li Yan, Wan Fu, Meng Ren, Xiaoying Wu, Hongxing Chen, Chuan Yang, Guojuan Lao, Jing Liu, Jiahuan Wang, Xiaoyi Wang, and Yuxi Wu
- Subjects
Male ,Vascular Endothelial Growth Factor A ,Aging ,Angiogenesis ,diabetic foot ulcers ,Real-Time Polymerase Chain Reaction ,Umbilical vein ,Rats, Sprague-Dawley ,Extracellular Vesicles ,angiogenesis ,Downregulation and upregulation ,microRNA ,Human Umbilical Vein Endothelial Cells ,Medicine ,Animals ,Humans ,Aged ,Wound Healing ,Neovascularization, Pathologic ,business.industry ,Cell Biology ,Middle Aged ,wound fluid ,medicine.disease ,Microarray Analysis ,Diabetic foot ,Diabetic Foot ,Rats ,microRNAs ,Vascular endothelial growth factor A ,Disease Models, Animal ,Diabetic foot ulcer ,Cancer research ,business ,Wound healing ,Research Paper - Abstract
Diabetic foot ulcers are recalcitrant to healing, and poor angiogenesis is considered as the main contributing factor. We aimed to explore the effect of extracellular vesicles (EVs) derived from wound fluids on new vessel formation in diabetic foot ulcers. EVs were isolated from wound fluids of diabetic foot ulcers (DF-EVs). The inhibitory effect of DF-EVs on human umbilical vein endothelial cells (HUVECs) and wound healing was tested. To elucidate the potential mechanism of these effects, we screened the differentially expressed microRNAs (miRNAs) in DF-EVs via microarray analysis and verified the upregulation of miR-195-5p and miR-205-5p in DF-EVs via quantitative real-time polymerase chain reaction (qRT-PCR). Further dual-luciferase reporter assays and overexpression experiments proved these two miRNAs inhibited the expression of vascular endothelial growth factor A (VEGFA) directly to the 3' untranslated region (UTR) of VEGFA and, in turn, promoted an inhibitory effect of DF-EVs on angiogenesis and wound healing in patients with diabetic foot ulcers. Our study shows EVs in the wound fluids of diabetic foot ulcer lesions carrying antiangiogenic miR-195-5p and miR-205-5p negatively regulated angiogenesis and wound healing in patients with diabetic foot.
- Published
- 2020
36. A Low Frequency Genetic Variant in the Hepatic Glucokinase Gene is Associated with Type 2 Diabetes and Insulin Resistance in Chinese Population
- Author
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Linong Ji, Xueyao Han, Mengdie Hu, Xueying Gao, Xiuting Huang, Yanai Wang, Xiuying Zhang, Lingli Zhou, Qian Ren, Xiaoling Cai, Simin Zhang, Wei Liu, Yufeng Li, Xianghai Zhou, Siqian Gong, Yingying Luo, Yumin Ma, and Ada Admin
- Abstract
Glucokinase (GCK) regulates insulin secretion and hepatic glucose metabolism, its inactivating variants could cause diabetes. We aimed to evaluate the association of a low-frequency variant of GCK (rs13306393) with type 2 diabetes (T2DM), prediabetes or both (IGR) in Chinese population. An association study was firstly conducted in a random cluster sampling population (Samples 1, 537 T2DM, 768 prediabetes and 1912 controls), then another independent Samples 2 (3896 T2DM, 2301 prediabetes and 868 controls) was used to confirm the findings in Samples 1. A-allele of rs13306393 was associated with T2DM [OR 3.08 (95%CI 1.77-5.36), p=0.00007] in Samples 1. Rs13306393 was also associated with prediabetes [OR 1.67 (95%CI 1.05-2.65), p=0.03] in Samples 2. In pooled analysis of two samples, A-allele increased the risk of T2DM [OR1.57 (95%CI 1.15-2.15), p=0.005], prediabetes [OR 1.83 (95%CI 1.33-2.54), p=0.0003) or IGR [OR 1.68 (95% CI 1.26-2.25), p=0.0004], insulin resistance estimated by homeostasis model assessment (beta=0.043, p=0.001), HbA1c (beta=0.029, P=0.029) and urinary albumin excretion (beta=0.033, p=0.025) irrespective of age, gender and BMI. Thus, the Chinese specific low-frequency variant increased the risk of T2DM through reducing insulin sensitivity rather than islet beta cell function, which should be considered in clinical use of GCK activators in the future.
- Published
- 2020
37. Transcriptomic and Metabolomic Joint Analysis Reveals Distinct Flavonoid Biosynthesis Regulation for Variegated Testa Color Development in Peanut (Arachis Hypogaea L.)
- Author
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Lifeng Liu, Shunli Cui, Xiaoqing Liu, Jiawei Li, Guojun Mu, Xinlei Yang, Xiaoxia Jiang, Mengdie Hu, and Mingyu Hou
- Subjects
0106 biological sciences ,0301 basic medicine ,Arachis ,Plant molecular biology ,Molecular biology ,Science ,Plant Development ,Biology ,Models, Biological ,01 natural sciences ,Article ,Transcriptome ,03 medical and health sciences ,chemistry.chemical_compound ,Metabolomics ,Gene Expression Regulation, Plant ,Gene Regulatory Networks ,KEGG ,Transcriptomics ,Secondary metabolism ,Genetic Association Studies ,Plant Physiological Phenomena ,Plant Proteins ,Variegation ,Flavonoids ,Genetics ,Multidisciplinary ,Computational Biology ,food and beverages ,Metabolic pathway ,Gene Ontology ,Phenotype ,030104 developmental biology ,Flavonoid biosynthesis ,chemistry ,Medicine ,sense organs ,Delphinidin ,Plant sciences ,010606 plant biology & botany - Abstract
Peanut is one of the important oil and economic crops, among which the variegated testa peanut is a unique member. The molecular mechanisms underlying the pigment synthesis in variegated testa are still unclear. Differentially expressed genes (DEGs) in the flavonoid metabolism pathway in pigmented areas indicated that there were 27 DEGs highly related to the synthesis of variegated testa color among 1,050 DEGs. Of these 27, 13 were up-regulated and 14 were down-regulated, including 3 PALs, 1 C4H, 2 CHSs, 1 F3H, 1 F3'H, 2 DFRs, 2 LARs, 2 IAAs, 4 bHLHs, and 9 MYBs. GO (Gene Ontology) analysis indicated that DEGs were similarly enriched in three branches. KEGG (Kyoto Encyclopedia of Genes and Genomes) analysis suggested flavonoid biosynthesis is the most direct metabolic pathway for the synthesis of testa variegation. The liquid chromatography–tandem mass spectrometry (LC–MS/MS) results showed that cyanidin and delphinidin were the primary metabolites that caused the color differences between the pigmented and the non-pigmented areas. Through the verification of 20 DEGs via qPCR, the results were consistent with transcriptome sequencing in four comparison groups. The results in this study lay the foundation for revealing the molecular regulation mechanisms of flavonoid synthesis in variegated testa peanut.
- Published
- 2020
38. Novel long non-coding RNA lnc-URIDS delays diabetic wound healing by targeting Plod1
- Author
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Meng Ren, Li Yan, Guojuan Lao, Chuan Wang, Jing Zhou, Tingting Zeng, Liyan Zhou, Wei Wang, Xiaoyi Wang, Chuan Yang, Yuxi Wu, Mengdie Hu, and Ada Admin
- Abstract
Impaired wound healing is one of the main reasons that leads to diabetic foot ulcerations. However, the exact mechanism of delayed wound healing in diabetes mellitus is not fully understood. Long non-coding RNAs (lncRNAs) are widely involved in a variety of biological processes and diseases, including diabetes and its associated complications. Here, we identified a novel lncRNA MRAK052872, named lnc-URIDS (lncRNA UpRegulated in Diabetic Skin), which regulates wound healing in diabetes mellitus. Lnc-URIDS was highly expressed in diabetic skin and dermal fibroblasts treated with advanced glycation end products (AGEs). Lnc-URIDS knockdown promoted migration of dermal fibroblasts under AGEs treatment in vitro and accelerated diabetic wound healing in vivo. Mechanistically, lnc-URIDS interacts with procollagen-lysine, 2-oxoglutarate 5-dioxygenase 1 (Plod1), a critical enzyme responsible for collagen cross-linking. The binding of lnc-URIDS to Plod1 results in a decreased protein stability of Plod1, which ultimately leads to the dysregulation of collagen production and deposition and delays wound healing. Collectively, this study identifies a novel lncRNA that regulates diabetic wound healing by targeting Plod1. The findings of the present study offer some insight into the potential mechanism for the delayed wound healing in diabetes and provide a potential therapeutic target for diabetic foot.
- Published
- 2020
39. Low-Frequency Genetic Variant in the Hepatic Glucokinase Gene Is Associated With Type 2 Diabetes and Insulin Resistance in Chinese Population
- Author
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Yanai Wang, Mengdie Hu, Xiaoling Cai, Xueyao Han, Yufeng Li, Linong Ji, Yumin Ma, Lingli Zhou, Wei Liu, Xianghai Zhou, Qian Ren, Simin Zhang, Yingying Luo, Siqian Gong, Xiuting Huang, Xiuying Zhang, and Xueying Gao
- Subjects
0301 basic medicine ,Adult ,Blood Glucose ,medicine.medical_specialty ,China ,Endocrinology, Diabetes and Metabolism ,Population ,030209 endocrinology & metabolism ,Type 2 diabetes ,Excretion ,Prediabetic State ,03 medical and health sciences ,0302 clinical medicine ,Insulin resistance ,Internal medicine ,Diabetes mellitus ,Glucokinase ,Insulin Secretion ,Internal Medicine ,medicine ,Humans ,Prediabetes ,Beta (finance) ,education ,Promoter Regions, Genetic ,Aged ,education.field_of_study ,business.industry ,nutritional and metabolic diseases ,Genetic Variation ,Exons ,Glucose Tolerance Test ,Middle Aged ,medicine.disease ,030104 developmental biology ,Endocrinology ,Diabetes Mellitus, Type 2 ,Liver ,Insulin Resistance ,business ,Plasmids - Abstract
Glucokinase (GCK) regulates insulin secretion and hepatic glucose metabolism, and its inactivating variants could cause diabetes. We aimed to evaluate the association of a low-frequency variant of GCK (rs13306393) with type 2 diabetes (T2D), prediabetes, or both (impaired glucose regulation [IGR]) in a Chinese population. An association study was first conducted in a random cluster sampling population (sample 1: 537 T2D, 768 prediabetes, and 1,912 control), and then another independent population (sample 2: 3,896 T2D, 2,301 prediabetes, and 868 control) was used to confirm the findings in sample 1. The A allele of rs13306393 was associated with T2D (odds ratio 3.08 [95% CI 1.77–5.36], P = 0.00007) in sample 1; rs13306393 was also associated with prediabetes (1.67 [1.05–2.65], P = 0.03) in sample 2. In a pooled analysis of the two samples, the A allele increased the risk of T2D (1.57 [1.15–2.15], P = 0.005), prediabetes (1.83 [1.33–2.54], P = 0.0003) or IGR (1.68 [1.26–2.25], P = 0.0004), insulin resistance estimated by HOMA (β = 0.043, P = 0.001), HbA1c (β = 0.029, P = 0.029), and urinary albumin excretion (β = 0.033, P = 0.025), irrespective of age, sex, and BMI. Thus, the Chinese-specific low-frequency variant increased the risk of T2D through reducing insulin sensitivity rather than islet β-cell function, which should be considered in the clinical use of GCK activators in the future.
- Published
- 2020
40. Effect of Hemoglobin A1c Reduction or Weight Reduction on Blood Pressure in Glucagon-Like Peptide-1 Receptor Agonist and Sodium-Glucose Cotransporter-2 Inhibitor Treatment in Type 2 Diabetes Mellitus: A Meta-Analysis
- Author
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Linong Ji, Simin Zhang, Lin Nie, Wenjia Yang, Mengdie Hu, and Xiaoling Cai
- Subjects
Blood Glucose ,Male ,medicine.medical_specialty ,type 2 diabetes mellitus ,030209 endocrinology & metabolism ,030204 cardiovascular system & hematology ,Incretins ,Glucagon-Like Peptide-1 Receptor ,03 medical and health sciences ,0302 clinical medicine ,Weight loss ,Internal medicine ,Weight Loss ,medicine ,sodium‐glucose cotransporter‐2 inhibitors ,Humans ,Sodium-Glucose Cotransporter 2 Inhibitor ,glucagon‐like peptide‐1 receptor agonists ,Receptor ,Sodium-Glucose Transporter 2 Inhibitors ,Glucagon-like peptide 1 receptor ,Aged ,Glycated Hemoglobin ,business.industry ,Systematic Review and Meta‐analysis ,Meta Analysis ,Type 2 Diabetes Mellitus ,blood pressure ,Diabetes, Type 2 ,Middle Aged ,Blood pressure ,Endocrinology ,Treatment Outcome ,Diabetes Mellitus, Type 2 ,meta‐analysis ,Meta-analysis ,Female ,Hemoglobin ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Biomarkers - Abstract
Background Glucagon‐like peptide‐1 receptor agonists ( GLP ‐1 RAs ) and sodium‐glucose cotransporter‐2 inhibitors ( SGLT 2is) have shown their beneficial effects on cardiovascular outcomes and multiple cardiovascular risk factors, including hypertension. However, the mechanism of blood pressure ( BP )–lowering effects of these agents has not been elucidated. This study aims to evaluate the effect of hemoglobin A1c reduction or body weight reduction with GLP ‐1 RA treatment and SGLT 2i treatment on BP changes in patients with type 2 diabetes mellitus. Methods and Results Studies were identified by a search of MEDLINE , EMBASE , and the Cochrane Central Register until June 2019. Meta‐regression analysis was performed to evaluate the association between hemoglobin A1c reduction or body weight reduction and changes of BP . A total of 184 trials were included. Both GLP ‐1 RA and SGLT 2i led to significant reductions in systolic BP (weighted mean difference, −2.856 and −4.331 mm Hg, respectively; P BP (weighted mean difference, −0.898 and −2.279 mm Hg, respectively; P BP reduction or diastolic BP reduction. In GLP ‐1 RA treatment, weight reduction was positively associated with systolic BP reduction and diastolic BP reduction (β=0.821 and β=0.287, respectively; P SGLT 2i treatment, weight loss was significantly associated with systolic BP reduction (β=0.820; P =0.001) but was not associated with diastolic BP reduction. Conclusions Treatment with GLP ‐1 RA and SGLT 2i led to significant reductions in BP in patients with type 2 diabetes mellitus. Weight reduction was significantly and independently associated with BP reductions in GLP ‐1 RA treatment and SGLT 2i treatment.
- Published
- 2020
41. Novel Long Noncoding RNA lnc-URIDS Delays Diabetic Wound Healing by Targeting Plod1
- Author
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Meng Ren, Yuxi Wu, Chuan Wang, Li Yan, Mengdie Hu, Liyan Zhou, Chuan Yang, Guojuan Lao, Wei Wang, Xiaoyi Wang, Tingting Zeng, and Jing Zhou
- Subjects
0301 basic medicine ,Glycation End Products, Advanced ,Male ,Endocrinology, Diabetes and Metabolism ,Blotting, Western ,030209 endocrinology & metabolism ,Enzyme-Linked Immunosorbent Assay ,Real-Time Polymerase Chain Reaction ,Rats, Sprague-Dawley ,03 medical and health sciences ,0302 clinical medicine ,Downregulation and upregulation ,Glycation ,In vivo ,Diabetes mellitus ,Internal Medicine ,medicine ,Animals ,In Situ Hybridization ,Skin ,Gene knockdown ,Wound Healing ,integumentary system ,business.industry ,Procollagen-Lysine, 2-Oxoglutarate 5-Dioxygenase ,medicine.disease ,Diabetic foot ,Long non-coding RNA ,Rats ,030104 developmental biology ,Cancer research ,RNA, Long Noncoding ,business ,Wound healing - Abstract
Impaired wound healing is one of the main causes of diabetic foot ulcerations. However, the exact mechanism of delayed wound healing in diabetes is not fully understood. Long noncoding RNAs (lncRNAs) are widely involved in a variety of biological processes and diseases, including diabetes and its associated complications. In this study, we identified a novel lncRNA, MRAK052872, named lncRNA UpRegulated in Diabetic Skin (lnc-URIDS), which regulates wound healing in diabetes. lnc-URIDS was highly expressed in diabetic skin and dermal fibroblasts treated with advanced glycation end products (AGEs). lnc-URIDS knockdown promoted migration of dermal fibroblasts under AGEs treatment in vitro and accelerated diabetic wound healing in vivo. Mechanistically, lnc-URIDS interacts with procollagen-lysine, 2-oxoglutarate 5-dioxygenase 1 (Plod1), a critical enzyme responsible for collagen cross-linking. The binding of lnc-URIDS to Plod1 results in a decreased protein stability of Plod1, which ultimately leads to the dysregulation of collagen production and deposition and delays wound healing. Collectively, this study identifies a novel lncRNA that regulates diabetic wound healing by targeting Plod1. The findings of the current study offer some insight into the potential mechanism for the delayed wound healing in diabetes and provide a potential therapeutic target for diabetic foot.
- Published
- 2020
42. Effect of aluminium on the microstructure and mechanical properties of as-cast magnesium–manganese alloys
- Author
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Caiyu Li, Mengdie Hu, Jianguo Liu, Z. S. Yu, Wang Fangyuan, Bin Chen, Aitao Tang, Zhengyuan Gao, Jiejun He, and Wu Mingsong
- Subjects
010302 applied physics ,6111 aluminium alloy ,Materials science ,Mechanical Engineering ,Metallurgy ,02 engineering and technology ,5005 aluminium alloy ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Microstructure ,01 natural sciences ,Precipitation hardening ,Mechanics of Materials ,0103 physical sciences ,5052 aluminium alloy ,6063 aluminium alloy ,General Materials Science ,Grain boundary ,0210 nano-technology ,Grain boundary strengthening - Abstract
In this paper, the effect of aluminium on microstructure and mechanical properties of as-cast magnesium–manganese alloy has been investigated by means of X-ray diffraction, optical microscopy and scanning electron microscopy. The results reveal that various Al–Mn intermetallic compounds form with an increase of Al content. As a result, microstructure of AM11 alloy has been effectively refined due to the formation of Al8Mn5 phase along the grain boundary, while Al addition is explained as the main reason on refining the microstructure of AM91 alloy due to its higher grain growth restriction factor value of ∼4.32. The tensile yield strength (TYS) has been improved steadily from 27.4 to 122.9 MPa with increasing Al content, because of the combined effects of grain boundary strengthening, solid solution strengthening and precipitation hardening behaviours.
- Published
- 2017
43. A New Clinical Screening Strategy to Distinguish HNF1A Variant-Induced Diabetes from Young Early-Onset Type 2 Diabetes in Chinese Population
- Author
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Yumin Ma, Xiuying Zhang, Xueying Gao, Liyong Zhong, Xinhua Xiao, Xiaoling Cai, Ling Chen, Yufeng Li, Xianghai Zhou, Rui Zhang, Jin-Kui Yang, Simin Zhang, Meng Li, Fang Wang, Qiuping Wang, Yu Zhu, Xiuting Huang, Yingying Luo, Xirui Wang, Qian Ren, Siqian Gong, Mengdie Hu, Weijun Gu, Linong Ji, Lingli Zhou, Wei Liu, Jianzhong Xiao, and Xueyao Han
- Subjects
endocrine system ,Pediatrics ,medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,Case-control study ,Type 2 diabetes ,medicine.disease ,HNF1A ,Informed consent ,Diabetes mellitus ,Medicine ,business ,Body mass index ,Declaration of Helsinki ,Genetic testing - Abstract
Background: Maturity-onset diabetes of the young caused by HNF1A (HNF1A-MODY) is a common form of monogenetic diabetes. The patients with HNF1A-MODY are recommended to use sulfonylureas. This study was to establish a clinical strategy to identify the patients with HNF1A-MODY from clinically diagnosed early-onset type 2 diabetes (EOD) for genetic testing in Chinese population. Methods: A case control study including 125 non-related young patients with EOD and 15 probands of HNF1A-MODY was firstly conducted to evaluate the biomarkers of HNF1A-MODY and establish a clinically screening strategy (HNF1A-CSS). The effectiveness of HNF1A-CSS was secondly tested in another group of young 410 patients with EOD. All the participants were Chinese. Findings: Body mass index (BMI), fasting serum insulin (Fins), serum high density cholesterol (HDL-c) and high-sensitivity C reaction protein (hsCRP) were confirmed to be useful for differential diagnosis of HNF1AMODY. 8 probands of HNF1A-MODY in 410 patients with EOD and 1 young relative with HNF1A-MODY were identified. In the pooled analysis of all the young patients, a HNF1A-CSS, meeting at least three of four criteria (BMI 1.12 mmol/L), has 90·5% sensitivity and 73·6% specificity to screen for the patients with HNF1A-MODY in the patients with clinically diagnosed EOD. Interpretation: The HNF1A-CSS is helpful to distinguish HNF1A-MODY from EOD in young Chinese population. Funding Statement: This research was supported by National Key Research and Development Program (2016YFC1304901) and the Beijing Municipal Commission of Science and Technology funds (Z141100007414002 and D131100005313008). Declaration of Interests: No potential conflicts of interest relevant to this article were reported. Ethics Approval Statement: This study was performed in accordance with the tenets of the Declaration of Helsinki and approved by the ethics committee of Peking University People's Hospital, and written informed consent was obtained from all participants.
- Published
- 2019
44. Serum Albumin, but not Bilirubin, is Associated with Diabetic Chronic Vascular Complications in a Chinese Type 2 Diabetic Population
- Author
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Jing Wu, Leili Gao, Yan Liu, Xueyao Han, Xiaoling Cai, Ling Chen, Qian Ren, Yu Zhu, Lingli Zhou, Xiuting Huang, Yingying Luo, Wenjia Yang, Wei Liu, Jing Chen, Siqian Gong, Meng Li, Simin Zhang, Xiuying Zhang, Xueying Gao, Mengdie Hu, Xianghai Zhou, Rui Zhang, and Linong Ji
- Subjects
0301 basic medicine ,Male ,lcsh:Medicine ,Type 2 diabetes ,Gastroenterology ,chemistry.chemical_compound ,0302 clinical medicine ,Risk Factors ,Diabetic Nephropathies ,lcsh:Science ,education.field_of_study ,Multidisciplinary ,biology ,Diabetic retinopathy ,Middle Aged ,Female ,medicine.medical_specialty ,China ,Genotype ,Bilirubin ,Population ,Serum albumin ,Single-nucleotide polymorphism ,Polymorphism, Single Nucleotide ,Article ,03 medical and health sciences ,Internal medicine ,Diabetes mellitus ,medicine ,Humans ,Genetic Predisposition to Disease ,education ,Alleles ,Genetic Association Studies ,Serum Albumin ,Triglycerides ,Diabetic Retinopathy ,business.industry ,lcsh:R ,Health sciences ,Odds ratio ,medicine.disease ,030104 developmental biology ,chemistry ,Diabetes Mellitus, Type 2 ,biology.protein ,lcsh:Q ,business ,030217 neurology & neurosurgery ,Diabetic Angiopathies - Abstract
To identify the factors associated with serum total bilirubin (STB) and determine whether STB is independently associated with diabetic retinopathy (DR) or diabetic kidney disease (DKD), 1,665 Chinese patients with type 2 diabetes (T2DM) (248 outpatients newly diagnosed with T2DM [NDM] and 1,417 inpatients previously diagnosed with T2DM [PDM]) were studied. Clinical and biochemical information was collected, and a single nucleotide polymorphism (rs6704078) of the UGT1A1 gene was genotyped in 1,059 individuals. Multiple linear regression showed that STB was associated with haemoglobin concentration, platelet count, and serum triglyceride concentration in NDM and PDM patients, and with serum albumin, duration of diabetes, and smoking in PDM patients. In patients with PDM, multiple logistic regression revealed that serum albumin was associated with DR (odds ratio [OR] = 0.92, 95% confidence interval [CI]: 0.87–0.96, p = 0.001) and DKD (OR = 0.93, 95% CI: 0.88–0.98, p = 0.005) after adjustment for STB, STB-related factors, and risk factors for DR and DKD. In addition, patients with the T allele of rs6704078 had higher STB (13.2 [10.4–17.9] μmol/L versus 11.8 (9.4–14.8) μmol/L; p
- Published
- 2018
45. New clinical screening strategy to distinguish HNF1A variant-induced diabetes from young early-onset type 2 diabetes in a Chinese population
- Author
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Ling Chen, Xiaoling Cai, Yingying Luo, Yumin Ma, Simin Zhang, Fang Wang, Meng Li, Xirui Wang, Qiuping Wang, Rui Zhang, Xinhua Xiao, Weijun Gu, Qian Ren, Mengdie Hu, Yufeng Li, Xiuying Zhang, Liyong Zhong, Xueying Gao, Xianghai Zhou, Ji Linong, Jin-Kui Yang, Siqian Gong, Jianzhong Xiao, Yu Zhu, Lingli Zhou, Wei Liu, Xueyao Han, and Xiuting Huang
- Subjects
China ,endocrine system ,medicine.medical_specialty ,Endocrinology, Diabetes and Metabolism ,030209 endocrinology & metabolism ,Type 2 diabetes ,Diseases of the endocrine glands. Clinical endocrinology ,screening strategies ,03 medical and health sciences ,0302 clinical medicine ,Insulin resistance ,Internal medicine ,Diabetes mellitus ,medicine ,Humans ,Insulin ,Hepatocyte Nuclear Factor 1-alpha ,030212 general & internal medicine ,biology ,business.industry ,C-reactive protein ,Genetics/Genomes/Proteomics/Metabolomics ,RC648-665 ,medicine.disease ,HNF1a ,HNF1A ,C-Reactive Protein ,Diabetes Mellitus, Type 2 ,Case-Control Studies ,MODY ,Cohort ,biology.protein ,type 2 diabetes ,Metabolic syndrome ,business ,Body mass index - Abstract
ObjectiveMaturity-onset diabetes of the young caused by hepatocyte nuclear factor-1 alpha (HNF1A) variants (HNF1A-MODY) is a common form of monogenetic diabetes. Although patients with HNF1A-MODY might specifically benefit from sulfonylurea treatment, available methods for screening this specific type of diabetes are not cost-effective. This study was designed to establish an optimized clinical strategy based on multiple biomarkers to distinguish patients with HNF1A-MODY from clinically diagnosed early-onset type 2 diabetes (EOD) for genetic testing in a Chinese population.Research design and methodsA case–control study including 125 non-related young patients with EOD and 15 probands with HNF1A-MODY (cohort 1) was conducted to evaluate reported biomarkers for HNF1A-MODY. A cut-off for the fasting insulin (Fins) level, the 97.5 percentile of 150 healthy subjects with normal components of metabolic syndrome (cohort 2), was used to filter out individuals with obvious insulin resistance (Fins HNF1A-CSS) was established, and its effectiveness was assessed in another group of 410 young patients with EOD (cohort 3).ResultsIn cohort 1, body mass index (BMI), serum high-density lipoprotein cholesterol (HDL-c) and high-sensitivity C reactive protein (hs-CRP) levels were confirmed to be useful for the differential diagnosis of HNF1A-MODY. In cohort 3, eight probands with HNF1A-MODY were identified. In cohort 3 and young relatives with HNF1A-MODY, meeting three of four criteria (BMI 2, hs-CRP 1.12 mmol/L), the sensitivity and specificity of HNF1A-CSS were 100% and 69.3%, respectively. In the pooled analysis of all young patients, HNF1A-CSS displayed 90.5% sensitivity and 73.6% specificity for identifying patients with HNF1A-MODY among those with clinically diagnosed EOD.ConclusionOur HNF1A-CSS is useful for distinguishing patients with HNF1A-MODY from patients with EOD in a young Chinese population.
- Published
- 2020
46. Visualizing Social Media Content with SentenTree
- Author
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Krist Wongsuphasawat, John Stasko, and Mengdie Hu
- Subjects
Computer science ,business.industry ,020207 software engineering ,Context (language use) ,02 engineering and technology ,computer.software_genre ,Computer Graphics and Computer-Aided Design ,Visualization ,Tree (data structure) ,Signal Processing ,0202 electrical engineering, electronic engineering, information engineering ,Key (cryptography) ,020201 artificial intelligence & image processing ,Social media ,Computer Vision and Pattern Recognition ,Artificial intelligence ,Tag cloud ,business ,computer ,Software ,Sentence ,Word (computer architecture) ,Natural language processing - Abstract
We introduce SentenTree, a novel technique for visualizing the content of unstructured social media text. SentenTree displays frequent sentence patterns abstracted from a corpus of social media posts. The technique employs design ideas from word clouds and the Word Tree, but overcomes a number of limitations of both those visualizations. SentenTree displays a node-link diagram where nodes are words and links indicate word co-occurrence within the same sentence. The spatial arrangement of nodes gives cues to the syntactic ordering of words while the size of nodes gives cues to their frequency of occurrence. SentenTree can help people gain a rapid understanding of key concepts and opinions in a large social media text collection. It is implemented as a lightweight application that runs in the browser.
- Published
- 2016
47. The dramatically increased chaperone activity of small heat-shock protein IbpB is retained for an extended period of time after the stress condition is removed
- Author
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Jing Ma, Mengdie Hu, Pulin Li, Wangwang Jiao, Weizhe Hong, Zengyi Chang, Mengding Qian, and Shihu Sun
- Subjects
TEMPERATURE DECREASE ,Protein subunit ,medicine.disease_cause ,Biochemistry ,Heat shock protein ,Escherichia coli ,Fluorescence Resonance Energy Transfer ,medicine ,Chaperone activity ,Molecular Biology ,Heat-Shock Proteins ,biology ,Circular Dichroism ,Escherichia coli Proteins ,Hydrolysis ,Cell Biology ,Recovery stage ,Spectrometry, Fluorescence ,Chaperone (protein) ,Chromatography, Gel ,biology.protein ,Biophysics ,Stress conditions ,Heat-Shock Response ,Molecular Chaperones - Abstract
sHSP (small heat-shock protein) IbpB (inclusion-body-binding protein B) from Escherichia coli is known as an ATP-independent holding chaperone which prevents the insolubilization of aggregation-prone proteins by forming stable complexes with them. It was found that the chaperone function of IbpB is greatly modulated by the ambient temperature, i.e. when the temperature increases from normal to heat-shock, the chaperone activity of IbpB is dramatically elevated to a level that allows it to effectively bind the aggregation-prone client proteins. Although it is generally believed that the release and refolding of the client protein from the sHSPs depends on the aid of the ATP-dependent chaperones such as Hsp (heat-shock protein) 70 and Hsp100 when the ambient temperature recovers from heat-shock to normal, the behaviour of the sHSPs during this recovery stage has not yet been investigated. In the present study, we examined the behaviour and properties of IbpB upon temperature decrease from heat-shock to normal. We found that IbpB, which becomes functional only under heat-shock conditions, retains the chaperone activity for an extended period of time after the heat-shock stress condition is removed. A detail comparison demonstrates that such preconditioned IbpB is distinguished from the non-preconditioned IbpB by a remarkable conformational transformation, including a significant increase in the flexibility of the N- and C-terminal regions, as well as enhanced dynamic subunit dissociation/reassociation. Intriguingly, the preconditioned IbpB displayed a dramatic decrease in its surface hydrophobicity, suggesting that the exposure of hydrophobic sites might not be the sole determinant for IbpB to exhibit chaperone activity. We propose that the maintenance of the chaperone activity for such ‘holdases’ as sHSPs would be important for cells to recover from heat-shock stress.
- Published
- 2008
48. Exploring anomalies in GAStech: VAST 2014 Mini Challenge 1 and 2
- Author
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Hannah Kim, Mengdie Hu, James Nugent, Jaegul Choo, Haesun Park, John Stasko, Yi Han, and Francesco Poggi
- Subjects
Visual analytics ,Computer science ,Process (engineering) ,Human–computer interaction ,MATLAB ,computer ,Visualization ,computer.programming_language ,Jigsaw - Abstract
We present our process and analysis for VAST 2014 Mini Challenge 1 and 2, which integrate an off-the-shelf tool, Jigsaw, rapid web-based visualization prototyping using D3, and analytics-based visualizations using Matlab.
- Published
- 2014
49. Visual analytics for converging-business-ecosystem intelligence
- Author
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John Stasko, Mengdie Hu, Rahul C. Basole, and P. Patel
- Subjects
Visual analytics ,Competitive intelligence ,business.industry ,Computer science ,Commerce ,Computer Graphics and Computer-Aided Design ,Data science ,Information visualization ,User-Computer Interface ,Data visualization ,Interactive visual analysis ,Human–computer interaction ,Analytics ,Business intelligence ,Computer Graphics ,Diffusion of Innovation ,business ,Cultural analytics ,Software - Abstract
Visual analytics (VA)-the fusion of analytical reasoning and computational data analysis with rich, interactive visual representations-promises to provide many relevant techniques for business-ecosystem-intelligence systems. However, the effectiveness of such systems requires the careful curation of complex, heterogeneous, and distributed data; an in-depth understanding of the business ecosystem context and end-user domain; and the corresponding design of relevant visualizations and metrics.
- Published
- 2014
50. Understanding interfirm relationships in business ecosystems with interactive visualization
- Author
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Harshit Mehrotra, John Stasko, Rahul C. Basole, Mengdie Hu, and Trustin Clear
- Subjects
Knowledge management ,Computer science ,Information visualization ,User-Computer Interface ,Data visualization ,Market segmentation ,Computer Graphics ,Ecosystem ,Computer Simulation ,Interactive visualization ,business.industry ,Commerce ,Business ecosystem ,Computer Graphics and Computer-Aided Design ,Focal firm ,Market research ,Interinstitutional Relations ,New business development ,Models, Organizational ,Signal Processing ,Strategic management ,Computer Vision and Pattern Recognition ,Strategic analysis ,business ,Software ,Algorithms - Abstract
Business ecosystems are characterized by large, complex, and global networks of firms, often from many different market segments, all collaborating, partnering, and competing to create and deliver new products and services. Given the rapidly increasing scale, complexity, and rate of change of business ecosystems, as well as economic and competitive pressures, analysts are faced with the formidable task of quickly understanding the fundamental characteristics of these interfirm networks. Existing tools, however, are predominantly query- or list-centric with limited interactive, exploratory capabilities. Guided by a field study of corporate analysts, we have designed and implemented dotlink360, an interactive visualization system that provides capabilities to gain systemic insight into the compositional, temporal, and connective characteristics of business ecosystems. dotlink360 consists of novel, multiple connected views enabling the analyst to explore, discover, and understand interfirm networks for a focal firm, specific market segments or countries, and the entire business ecosystem. System evaluation by a small group of prototypical users shows supporting evidence of the benefits of our approach. This design study contributes to the relatively unexplored, but promising area of exploratory information visualization in market research and business strategy.
- Published
- 2013
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