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Article ; Online: MGMT unmethylation and high levels of CD47 and TIGIT indicate a poor prognosis in adult diffuse gliomas.

Ma, Lingbo / Shi, Yi / Li, Chang / Deng, Bin / Jiang, Jinfang / Cao, Yuwen / Wang, Lianghai / Li, Hongyan

2024 Volume 15, Page(s) 1323307

Abstract: Introduction: In 2021, the World Health Organization published a new classification system for central nervous system tumors. This study reclassified the adult diffuse glioma (ADG) into astrocytoma, oligodendroglioma, and glioblastoma (GBM) according to ...

Abstract	Introduction: In 2021, the World Health Organization published a new classification system for central nervous system tumors. This study reclassified the adult diffuse glioma (ADG) into astrocytoma, oligodendroglioma, and glioblastoma (GBM) according to the new tumor classification. Methods: The association of TERT promoter (pTERT) mutation, MGMT methylation, and CD47/TIGIT expression with patient prognosis was investigated. Results: Immunohistochemical analysis showed that the expression levels of CD47 and TIGIT in tumor tissues were significantly higher than those in normal brain tissues. CD47 levels were higher in GBM and grade 4 astrocytoma tissues. TIGIT expression was also higher in patients with GBM. The high expressions of CD47, TIGIT, and CD47/TIGIT were positively correlated with Discussion: Collectively, these results showed that the
MeSH term(s)	Adult ; Humans ; Brain Neoplasms/pathology ; CD47 Antigen/genetics ; Glioma/pathology ; Glioblastoma/genetics ; Astrocytoma ; Prognosis ; DNA Modification Methylases/genetics ; Tumor Suppressor Proteins/genetics ; DNA Repair Enzymes/genetics ; Receptors, Immunologic/genetics
Chemical Substances	CD47 Antigen ; CD47 protein, human ; MGMT protein, human (EC 2.1.1.63) ; DNA Modification Methylases (EC 2.1.1.-) ; Tumor Suppressor Proteins ; DNA Repair Enzymes (EC 6.5.1.-) ; TIGIT protein, human ; Receptors, Immunologic
Language	English
Publishing date	2024-02-09
Publishing country	Switzerland
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2606827-8
ISSN	1664-3224 ; 1664-3224
ISSN (online)	1664-3224
ISSN	1664-3224
DOI	10.3389/fimmu.2024.1323307
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Article ; Online: Improved breast lesion detection in mammogram images using a deep neural network.

Zhou, Wen / Zhang, Xiaodong / Ding, Jia / Deng, Lingbo / Cheng, Guanxun / Wang, Xiaoying

Diagnostic and interventional radiology (Ankara, Turkey)

2023 Volume 29, Issue 4, Page(s) 588–595

Abstract: Purpose: This study aimed to investigate the effect of using a deep neural network (DNN) in breast cancer (BC) detection.: Methods: In this retrospective study, a DNN-based model was constructed from a total of 880 mammograms that 220 patients ... ...

Abstract	Purpose: This study aimed to investigate the effect of using a deep neural network (DNN) in breast cancer (BC) detection. Methods: In this retrospective study, a DNN-based model was constructed from a total of 880 mammograms that 220 patients underwent between April and June 2020. The mammograms were reviewed by two senior and two junior radiologists with and without the aid of the DNN model. The performance of the network was assessed by comparing the area under the curve (AUC) and receiver operating characteristic curves for the detection of four features of malignancy (masses, calcifications, asymmetries, and architectural distortions), with and without the aid of the DNN model and by the senior and junior radiologists. Additionally, the effect of utilizing the DNN on diagnosis time for both the senior and junior radiologists was evaluated. Results: The AUCs of the model for the detection of mass and calcification were 0.877 and 0.937, respectively. In the senior radiologist group, the AUC values for evaluation of mass, calcification, and asymmetric compaction were significantly higher with the DNN model than those obtained without the model. Similar effects were observed in the junior radiologist group, but the increase in the AUC values was even more dramatic. The median mammogram assessment time of the junior and senior radiologists was 572 (357-951) s, and 273.5 (129-469) s, respectively, with the DNN model, and the corresponding assessment time without the model, was 739 (445-1003) s and 321 (195-491) s, respectively. Conclusion: The DNN model exhibited high accuracy in detecting the four named features of BC and effectively shortened the review time by both senior and junior radiologists.
MeSH term(s)	Humans ; Female ; Retrospective Studies ; Mammography/methods ; Neural Networks, Computer ; ROC Curve ; Calcinosis ; Breast Neoplasms/diagnostic imaging
Language	English
Publishing date	2023-03-20
Publishing country	Turkey
Document type	Journal Article
ZDB-ID	2184145-7
ISSN	1305-3612 ; 1305-3612
ISSN (online)	1305-3612
ISSN	1305-3612
DOI	10.4274/dir.2022.22826
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Article: Family cluster of asymptomatic infections with COVID-19: a case series of 4 patients.

Deng, Lingbo / Ji, Ling / Meng, Zuowei / Gan, Yungen / Cheng, Guanxun

Quantitative imaging in medicine and surgery

2020 Volume 10, Issue 5, Page(s) 1127–1132

Keywords	covid19
Language	English
Publishing date	2020-05-25
Publishing country	China
Document type	Journal Article
ZDB-ID	2653586-5
ISSN	2223-4306 ; 2223-4292
ISSN (online)	2223-4306
ISSN	2223-4292
DOI	10.21037/qims.2020.04.15
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Article ; Online: Seasonal Dynamics and Influencing Factors of Litterfall Production and Carbon Input in Typical Forest Community Types in Lushan Mountain, China

Qiu, Lingbo / Xiao, Tingqi / Bai, Tianjun / Mo, Xingyue / Huang, Jiahui / Deng, Wenping / Liu, Yuanqiu

Forests. 2023 Feb. 09, v. 14, no. 2

2023

Abstract: Litterfall is an important part of the process of nutrient circulation and energy flow in forest ecosystems. Mountain forests are strongly eroded by running water in that the surface soil is thinner, and the terrain is complex and diverse. They are more ... ...

Abstract	Litterfall is an important part of the process of nutrient circulation and energy flow in forest ecosystems. Mountain forests are strongly eroded by running water in that the surface soil is thinner, and the terrain is complex and diverse. They are more sensitive to climate change, which will affect the ecological processes and carbon sink functions of forest ecosystems. Taking Lushan Mountain as an example, we studied the dynamic characteristics of litterfall components, seasonal changes in carbon input and the influencing factors of typical forest communities in the subtropics. The results showed that the total annual average litterfall components of evergreen broad-leaved forest (EBF) > artificial coniferous forest (ACF) > deciduous broad-leaved forest (DBF) > renew young forest (RYF), and that leaf litterfall is the first productivity in the litterfall components, and the peak of litterfall is mainly concentrated in spring and autumn, showing a single- or double-peaked change pattern. There was a linear relationship between the components of litterfall in the four forest communities and the stand factor, but the correlation degree R² was small. Overall, the results showed that the total amount of litterfall in the four forest communities was affected by canopy density and stand density. Light, temperature and water at different altitudes had different effects on the amount of litterfall, with excessive temperatures at lower altitudes likely to limit forest growth and development under adequate light and water, and the opposite was true at higher altitudes. The results of Pearson correlation analysis showed that EBF and DBF were negatively correlated with rainfall, that ACF and RYF were negatively correlated with temperature and rainfall, and that wind speed was positively correlated. The average annual carbon input size of the four forest communities was EBF > ACF > RYF > DBF, which may be related to environmental conditions and vegetation types, and the seasonal differences were arranged in order of spring > autumn > summer > winter. It can be seen that, considering performance under future climate change, EBF is more conducive to nutrient input and has good soil fertility maintenance ability.
Keywords	autumn ; canopy ; carbon ; carbon sinks ; climate change ; coniferous forests ; deciduous forests ; energy flow ; forest growth ; growth and development ; landscapes ; leaves ; plant litter ; rain ; soil fertility ; spring ; stand density ; summer ; temperature ; wind speed ; winter ; China
Language	English
Dates of publication	2023-0209
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article ; Online
ZDB-ID	2527081-3
ISSN	1999-4907
ISSN	1999-4907
DOI	10.3390/f14020341
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Article ; Online: Spatial distribution characteristics of carbazole and polyhalogenated carbazoles in water column and sediments in the open Western Pacific Ocean.

Hu, Songtao / Jiang, Lijia / Jiang, Lingbo / Tang, Leiming / Wickrama Arachchige, Anura Upasanta Kumara / Yu, Hao / Deng, Zhaochao / Li, Longyu / Wang, Chunsheng / Zhang, Dongsheng / Chen, Chunlei / Lin, Shiquan / Chen, Xiang / Zhang, Chunfang

Journal of hazardous materials

2024 Volume 469, Page(s) 133956

Abstract: Polyhalogenated carbazoles (PHCZs), an emerging persistent halogenated organic pollutant, have been detected in the environment. However, our understanding of PHCZs in the ocean remains limited. In this study, 47 seawater samples (covering 50 - 4000 m) ... ...

Abstract	Polyhalogenated carbazoles (PHCZs), an emerging persistent halogenated organic pollutant, have been detected in the environment. However, our understanding of PHCZs in the ocean remains limited. In this study, 47 seawater samples (covering 50 - 4000 m) and sediment samples (49 surface and 3 cores) were collected to investigate the occurrence and spatial distribution patterns of carbazole and its halogenated derivants (CZDs) in the Western Pacific Ocean. In seawater, the detection frequencies of CZ (97.87%) and 3-CCZ (57.45%) were relatively high. In addition, the average concentration of ΣPHCZs in the upper water (< 150 m, 0.23 ± 0.21 ng/L) was significantly lower than that in the deep ocean (1000 - 4000 m, 0.65 ± 0.56 ng/L, P < 0.05), which may indicate the vertical transport of PHCZs in the marine environment. The concentration of ΣCZDs in surface sediment ranges from 0.46 to 6.48 ng/g (mean 1.54 ng/g), among which CZ and 36-CCZ were the predominant components. Results from sediment cores demonstrate a noteworthy negative correlation between the concentration of CZDs and depth, indicating the ongoing natural degradation process occurring in sediment cores over a long period. This study offers distinctive insights into the occurrence, composition, and vertical features of CZDs in oceanic environments.
Language	English
Publishing date	2024-03-06
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	1491302-1
ISSN	1873-3336 ; 0304-3894
ISSN (online)	1873-3336
ISSN	0304-3894
DOI	10.1016/j.jhazmat.2024.133956
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Article ; Online: Dynamics of litter decomposition rate and soil organic carbon sequestration following vegetation succession on the Loess Plateau, China

Liu, Yulin / Wang, Kaibo / Dong, Lingbo / Li, Jiwei / Wang, Xiaozhen / Shangguan, Zhouping / Qu, Bodong / Deng, Lei

Catena. 2023 Aug., v. 229 p.107225-

2023

Abstract: Litter quality determines the decomposability of litter and the proportion of recalcitrant residues, which in turn can affect the accumulation of soil organic carbon (SOC). However, the impact of litter decomposition on SOC turnover following vegetation ... ...

Abstract	Litter quality determines the decomposability of litter and the proportion of recalcitrant residues, which in turn can affect the accumulation of soil organic carbon (SOC). However, the impact of litter decomposition on SOC turnover following vegetation succession has not been systematically studied. To clarify the dynamics and mechanisms of litter decomposition and SOC sequestration following vegetation succession, this study conducted a decomposition experiment across four successional stages: grassland (∼30 years), shrubland (∼60 years), pioneer forest (∼110 years), and climax forest (∼160 years). This study also analyzed the litter quality and the SOC turnover rate. The results showed that litter decomposition rates gradually decreased with vegetation succession. Litter lignin content (LC), and nitrogen content (LN) were the major factors controlling the change of litter decomposition rate. Litter with a high LC: LN ratio and lignin: LN ratio exhibited a lower decomposition rate, whereas the opposite was found for litter with a higher LN content. The increase in the SOC content mainly occurred in the early successional stage (<110 years), with a higher litter decomposition rate and SOC turnover rate. At the later stage (≥110 years), the SOC was close to saturation, together with low rates of litter decomposition and SOC turnover. The variation trend of the mineral-associated organic carbon (MAOC) content was the same as that of the SOC content, resulting from continuous litter inputs. Based on the above results, litter inputs can significantly increase the SOC content in the early successional stage, and soil carbon sequestrations gradually reach saturation in the late successional stage. The findings of this study strengthen our understanding of the changes in litter decomposition and its contribution to SOC sequestration following vegetation succession.
Keywords	carbon sequestration ; catenas ; ecological succession ; forests ; grasslands ; lignin ; lignin content ; nitrogen content ; shrublands ; soil organic carbon ; China ; Forest succession ; Litter decomposition rate ; Litter quality ; Soil carbon turnover ; Vegetation restoration
Language	English
Dates of publication	2023-08
Publishing place	Elsevier B.V.
Document type	Article ; Online
ZDB-ID	519608-5
ISSN	1872-6887 ; 0008-7769 ; 0341-8162
ISSN (online)	1872-6887 ; 0008-7769
ISSN	0341-8162
DOI	10.1016/j.catena.2023.107225
Database	NAL-Catalogue (AGRICOLA)

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Article: Soil organic carbon variation determined by biogeographic patterns of microbial carbon and nutrient limitations across a 3, 000-km humidity gradient in China

Li, Jiwei / Dong, Lingbo / Liu, Yulin / Wu, Jianzhao / Wang, Jie / Shangguan, Zhouping / Deng, Lei

Catena. 2022 Feb., v. 209

2022

Abstract: Soil extracellular enzyme stoichiometry has been used to characterize the acquisition strategies of soil microorganisms in obtaining carbon (C), nitrogen (N) and phosphorus (P). However, the variations in soil microbial resource limitation to changing ... ...

Abstract	Soil extracellular enzyme stoichiometry has been used to characterize the acquisition strategies of soil microorganisms in obtaining carbon (C), nitrogen (N) and phosphorus (P). However, the variations in soil microbial resource limitation to changing precipitation regimes and edaphic factors remain poorly understood, particularly for a highly divergent soil organic C gradient along the transect from dry to wet areas. This study investigated soil microbial C and nutrient (P/N) limitations along a 3,000-km humidity gradient. The results revealed a downward unimodal-shaped relationship between the humidity index (HI) and soil microbial P/N limitation with a threshold of HI = 0.68 (corresponding mean annual precipitation ranged from 469 mm to 551 mm). Changes in microbial C limitation, and total- and available soil P contents along the humidity gradient further revealed the presence of this threshold. Soil microbial C limitation remained constant at a humidity level below HI = 0.68, and it increased above this threshold. Microbial P limitation decreased and N limitation increased as humidity increased to HI = 0.68. Above HI = 0.68, the microbial P limitation gradually elevated with an increase in humidity. We also found that humidity and soil nutrients are critical factors explaining the variations in microbial resource limitation, and soil nutrients control microbial resource limitation on either side of the HI = 0.68 threshold. These findings suggest that the acquisition of N and P by soil microorganisms stimulates the decomposition of soil organic matter, and future predictions of ecosystem C budgets should thus consider enzymatic processes.
Keywords	atmospheric precipitation ; catenas ; ecosystems ; geographical distribution ; humidity ; microbial carbon ; nitrogen ; phosphorus ; soil ; soil enzymes ; soil organic carbon ; stoichiometry ; China
Language	English
Dates of publication	2022-02
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	519608-5
ISSN	1872-6887 ; 0008-7769 ; 0341-8162
ISSN (online)	1872-6887 ; 0008-7769
ISSN	0341-8162
DOI	10.1016/j.catena.2021.105849
Database	NAL-Catalogue (AGRICOLA)

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Article: Variations in Plant Water Use Efficiency Response to Manipulated Precipitation in a Temperate Grassland.

Hai, Xuying / Li, Jianping / Li, Jiwei / Liu, Yulin / Dong, Lingbo / Wang, Xiaozhen / Lv, Wenwen / Hu, Zhenhong / Shangguan, Zhouping / Deng, Lei

Frontiers in plant science

2022 Volume 13, Page(s) 881282

Abstract: Water use efficiency (WUE) plays important role in understanding the interaction between carbon and water cycles in the plant-soil-atmosphere system. However, little is known regarding the impact of altered precipitation on plant WUE in arid and semi- ... ...

Abstract	Water use efficiency (WUE) plays important role in understanding the interaction between carbon and water cycles in the plant-soil-atmosphere system. However, little is known regarding the impact of altered precipitation on plant WUE in arid and semi-arid regions. The study examined the effects of altered precipitation [i.e., ambient precipitation (100% of natural precipitation), decreased precipitation (DP, -50%) and increased precipitation (IP, +50%)] on the WUE of grass species (
Language	English
Publishing date	2022-05-19
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2613694-6
ISSN	1664-462X
ISSN	1664-462X
DOI	10.3389/fpls.2022.881282
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Article: Interactive effects of nitrogen and water addition on soil microbial resource limitation in a temperate desert shrubland

Li, Jiwei / Xie, Jiangbo / Zhang, Yu / Dong, Lingbo / Shangguan, Zhouping / Deng, Lei

Plant and soil. 2022 June, v. 475, no. 1-2

2022

Abstract: AIMS: Soil microorganisms play critical roles in regulating soil biogeochemical cycles, but their growth and metabolic activities are usually limited by resource availability, especially in water-limited desert ecosystems under global change. However, ... ...

Abstract	AIMS: Soil microorganisms play critical roles in regulating soil biogeochemical cycles, but their growth and metabolic activities are usually limited by resource availability, especially in water-limited desert ecosystems under global change. However, there is little information on the interactions of nitrogen (N) enrichment and increased precipitation on soil microbial resource limitation in desert-shrubland ecosystems. METHODS: This study examined the effects of long-term (9 years) N and water (W) additions (i.e., 5 g N m⁻² year⁻¹ and 30% ambient precipitation increase, and their combination) on the activities of soil extracellular enzymes (EEAs) and soil microbial resource limitation in the Gurbantunggut Desert in northwestern China. RESULTS: N and W addition significantly enhanced soil microbial carbon (C) and phosphorus (P)-acquiring enzymes, and significantly induced microbial growth from N to P limitation in the desert ecosystem. Furthermore, W addition and simultaneous addition of N and W alleviated C limitation; however, N addition alone increased the microbial C limitation. Thus, the interaction alleviated the negative impact of N addition on soil microbial C limitation, but increased the microbial P limitation. Soil microbial C limitation was primarily driven by the soil available N/P ratio, whereas the soil microbial P limitation was primarily controlled by soil total N/P ratio. CONCLUSIONS: The influence of either N or W addition on the biogeochemical processes in desert ecosystems can be altered by their concurrent addition. Overall, our findings showed that increased precipitation was more effective than N accumulation in modifying microbial metabolism in desert ecosystems, and this effect was co-regulated by the relative contents of N and P in the soil. These findings can aid in the prediction of terrestrial C and nutrient flows under global change.
Keywords	ecosystems ; global change ; metabolism ; microbial carbon ; microbial growth ; nitrogen ; phosphorus ; prediction ; shrublands ; soil ; total nitrogen ; China
Language	English
Dates of publication	2022-06
Size	p. 361-378.
Publishing place	Springer International Publishing
Document type	Article
ZDB-ID	208908-7
ISSN	1573-5036 ; 0032-079X
ISSN (online)	1573-5036
ISSN	0032-079X
DOI	10.1007/s11104-022-05371-y
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Article: Family cluster of asymptomatic infections with COVID-19: A case series of 4 patients

Deng, Lingbo / Ji, Ling / Meng, Zuowei / Gan, Yungen / Cheng, Guanxun

Quant. Imaging Med. Surg.

Keywords	covid19
Publisher	WHO
Document type	Article
Note	WHO #Covidence: #508758
Database	COVID19

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