scholarly journals The relationship of leaf photosynthetic traits -VcmaxandJmax- to leaf nitrogen, leaf phosphorus, and specific leaf area: a meta-analysis and modeling study

2014 ◽  
Vol 4 (16) ◽  
pp. 3218-3235 ◽  
Author(s):  
Anthony P. Walker ◽  
Andrew P. Beckerman ◽  
Lianhong Gu ◽  
Jens Kattge ◽  
Lucas A. Cernusak ◽  
...  
Keyword(s):  
Leaf Area ◽  
Specific Leaf Area ◽  
Meta Analysis ◽  
Leaf Nitrogen ◽  
Relationship Of ◽  
The Relationship ◽  
Photosynthetic Traits ◽  
Modeling Study

scholarly journals Associations of CTLA4 Gene Polymorphisms with Graves’ Ophthalmopathy: A Meta-Analysis

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Pengfei Du ◽  
Xiaojie Ma ◽  
Changjiang Wang
Keyword(s):  
Genetic Model ◽  
Meta Analysis ◽  
Case Control Studies ◽  
Graves Ophthalmopathy ◽  
Increased Risk ◽  
Exon 1 ◽  
Ctla4 Gene ◽  
Relationship Of ◽  
The Relationship ◽  
Susceptible Gene

Many studies have established that T-lymphocyte antigen-4 (CTLA4) is a susceptible gene for Graves’ disease (GD). Also many studies showed the association between the CTLA4 exon-1 49A/G polymorphism and the risk of developing Graves’ ophthalmopathy (GO) in GD patients. But those results were inconsistent. In recent years many new studies were published which helped to shed light on the relationship of CTLA4 SNP49 with GO. So we performed the meta-analysis to explore the association between the SNP49 and GO susceptibility in GD patients. Studies up to February 29, 2012, were searched by using PubMed. The odds ratio was used to evaluate the strength of the association. Altogether 12 case-control studies involving 2,505 participants were included in the meta-analysis. Results showed that the G allele was related to the increased risk of GO compared with the A allele under allelic genetic model (OR = 1.14, 95% CI: 1.14–1.72,P=0.001) in European subgroup. No publication bias was detected. Our results showed that the SNP49 polymorphism of CTLA4 gene was related to increased risk of GO.

On the relationship of NDVI with leaf area index in a deciduous forest site

2005 ◽  
Vol 94 (2) ◽  
pp. 244-255 ◽  
Author(s):  
Quan Wang ◽  
Samuel Adiku ◽  
John Tenhunen ◽  
André Granier
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Deciduous Forest ◽  
Forest Site ◽  
Area Index ◽  
Relationship Of ◽  
The Relationship

scholarly journals Low birth weight, preterm birth and small for gestational age association with adult depression: systematic review and meta-analysis

2014 ◽  
Vol 205 (5) ◽  
pp. 340-347 ◽  
Author(s):  
Christian Loret De Mola ◽  
Giovanny Vinícius Araújo De França ◽  
Luciana de Avila Quevedo ◽  
Bernardo Lessa Horta
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Gestational Age ◽  
Premature Birth ◽  
Fixed Effects ◽  
Meta Analysis ◽  
Adult Depression ◽  
Meta Analyses ◽  
Relationship Of ◽  
The Relationship

BackgroundThere is no consensus on the effects that low birth weight, premature birth and intrauterine growth have on later depression.AimsTo review systematically the evidence on the relationship of low birth weight, smallness for gestational age (SGA) and premature birth with adult depression.MethodWe searched the literature for original studies assessing the effect of low birth weight, premature birth and SGA on adult depression. Separate meta-analyses were carried out for each exposure using random and fixed effects models. We evaluated the contribution of methodological covariates to heterogeneity using meta-regression.ResultsWe identified 14 studies evaluating low birth weight, 9 premature birth and 4 SGA. Low birth weight increased the odds of depression (OR = 1.39, 95% CI 1.21–1.60). Premature birth and SGA were not associated with depression, but publication bias might have underestimated the effect of the former and only four studies evaluated SGA.ConclusionsLow birth weight was associated with depression. Future studies evaluating premature birth and SGA are needed.

scholarly journals Variation Patterns of Functional Trait Moments Along Geographical Gradients and Their Environmental Determinants in the Subtropical Evergreen Broadleaved Forests

2021 ◽  
Vol 12 ◽  
Author(s):  
Caishuang Huang ◽  
Yue Xu ◽  
Runguo Zang
Keyword(s):  
Climate Variability ◽  
Leaf Area ◽  
Functional Traits ◽  
Specific Leaf Area ◽  
Functional Trait ◽  
Leaf Nitrogen ◽  
Subtropical Region ◽  
Mean Variance ◽  
Nitrogen Phosphorus ◽  
Skewness And Kurtosis

Understanding how environmental change alters the composition of plant assemblages is a major challenge in the face of global climate change. Researches accounting for site-specific trait values within forest communities help bridge plant economics theory and functional biogeography to better evaluate and predict relationships between environment and ecosystem functioning. Here, by measuring six functional traits (specific leaf area, leaf dry matter content, leaf nitrogen, and phosphorus concentration, leaf nitrogen/phosphorus, wood density) for 292 woody plant species (48,680 individuals) from 250 established permanent forest dynamics plots in five locations across the subtropical evergreen broadleaved forests (SEBLF) in China, we quantified functional compositions of communities by calculating four trait moments, i.e., community-weighted mean, variance, skewness, and kurtosis. The geographical (latitudinal, longitudinal, and elevational) patterns of functional trait moments and their environmental drivers were examined. Results showed that functional trait moments shifted significantly along the geographical gradients, and trait moments varied in different ways across different gradients. Plants generally showed coordinated trait shifts toward more conservative growth strategies (lower specific leaf area, leaf N and P concentration while higher leaf nitrogen/phosphorus and wood density) along increasing latitude and longitude. However, trends opposite to the latitudinal and longitudinal patterns appeared in trait mean values along elevation. The three sets of environmental variables (climate, soil and topography) explained 35.0–69.0%, 21.0–56.0%, 14.0–31.0%, and 16.0–30.0% of the variations in mean, variance, skewness, and kurtosis across the six functional traits, respectively. Patterns of shifts in functional trait moments along geographical gradients in the subtropical region were mainly determined by the joint effects of climatic and edaphic conditions. Climate regimes, especially climate variability, were the strongest driving force, followed by soil nutrients, while topography played the least role. Moreover, the relationship of variance, skewness and kurtosis with climate and their geographical patterns suggested that rare phenotypes at edges of trait space were selected in harsher environments. Our study suggested that environmental filtering (especially climate variability) was the dominant process of functional assembly for forest communities in the subtropical region along geographical gradients.

Genetic variants of PEAR1 and ischemic clinical outcomes in coronary artery disease patients: a systematic review and meta-analysis

2021 ◽  
Author(s):  
Xinyi Zhang ◽  
Sicong Li ◽  
Yuxuan Zhao ◽  
Ningjia Tang ◽  
Tong Jia ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Clinical Outcomes ◽  
Odds Ratio ◽  
Meta Analysis ◽  
Electronic Database ◽  
Artery Disease ◽  
Relationship Of ◽  
The Relationship ◽  
Ischemic Events

Aim: The aim of this study was to assess the association between PEAR1 polymorphisms and ischemic clinical outcomes. Materials & methods: We searched the electronic database for articles on the relationship of PEAR1 SNPs and ischemic events in patients with coronary artery disease (CAD) up to October 2020. Results: A total of 9914 patients with CAD from six studies focusing on 12 SNPs of PEAR1 were included in this study. The A allele of rs12041331 were associated with ischemic events (odds ratio: 1.40; 95% CI: 1.04–1.88; p = 0.03). The AA homozygotes of rs2768759 was related to a higher risk of ischemic events than carriers of the C allele (odds ratio: 2.08; 95% CI: 1.09–3.97; p = 0.03). Conclusion: PEAR1 rs12041331 and rs2768759 are significantly associated with ischemic events in patients with CAD.

scholarly journals Relationship of Obstructive Sleep Apnoea with Diabetic Retinopathy: A Meta-Analysis

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Zhenliu Zhu ◽  
Fengying Zhang ◽  
Yunxia Liu ◽  
Shuqin Yang ◽  
Chunting Li ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Sensitivity Analysis ◽  
Diabetic Retinopathy ◽  
Publication Bias ◽  
Meta Analysis ◽  
Sleep Apnoea ◽  
Obstructive Sleep ◽  
Increased Risk ◽  
Relationship Of ◽  
The Relationship

Until now, the relationship of obstructive sleep apnoea (OSA) with diabetic retinopathy (DR) was controversial. This meta-analysis was performed to obtain definitive conclusion on this topic. Relevant articles were searched on databases of Pubmed, Google Scholar, and Chinese National Knowledge Infrastructure (CNKI). The articles were selected according to inclusion and exclusion criteria. Odds ratio (OR) with 95% confidence interval (CI) was used to evaluate the relationship of OSA with risk of DR.I2andPvalue were used to assess the presence of heterogeneity.I2≥ 50% orP<0.05indicated significant heterogeneity. Sensitivity analysis was performed to evaluate the robustness of pooled results. Begg’s funnel plot and Egger’s regression analysis were adopted to assess publication bias. 6 eligible studies were selected in the present meta-analysis. The pooled results indicated that OSA was significantly associated with increased risk of DR (OR = 2.01, 95% CI = 1.49–2.72). Subgroup analysis based on type of diabetes mellitus suggested that OSA was related to DR in both Type 1 and Type 2 diabetes mellitus. Sensitivity analysis demonstrated that pooled results were robust. No significant publication bias was observed (P=0.128). The results indicate that OSA is related to increased risk of DR.

Specific Leaf Area and Leaf Nitrogen Concentration of Lantana in Response to Light Regime and Triazole Treatment

2007 ◽  
Vol 38 (17-18) ◽  
pp. 2323-2331 ◽  
Author(s):  
Aristidis Matsoukis ◽  
Dionisios Gasparatos ◽  
Aikaterini Chronopoulou‐Sereli
Keyword(s):  
Leaf Area ◽  
Specific Leaf Area ◽  
Nitrogen Concentration ◽  
Leaf Nitrogen ◽  
Light Regime ◽  
Leaf Nitrogen Concentration

scholarly journals Regional-Scale Relationships of Leaf Area Index to Specific Leaf Area and Leaf Nitrogen Content

1994 ◽  
Vol 4 (2) ◽  
pp. 313-321 ◽  
Author(s):  
Lars L. Pierce ◽  
Steven W. Running ◽  
Joe Walker
Keyword(s):  
Leaf Area Index ◽  
Nitrogen Content ◽  
Leaf Area ◽  
Specific Leaf Area ◽  
Regional Scale ◽  
Leaf Nitrogen ◽  
Leaf Nitrogen Content ◽  
Area Index
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