scholarly journals Impact of Leaf Development Stages on Polyphenolics Profile and Antioxidant Activity in Clausena lansium (Lour.) Skeels

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Xiaoxiao Chang ◽  
Yusheng Lu ◽  
Zhixiong Lin ◽  
Jishui Qiu ◽  
Xinbo Guo ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Leaf Development ◽  
Developmental Stages ◽  
Positive Association ◽  
Commercial Application ◽  
Food Ingredient ◽  
Significant Positive Association ◽  
Cellular Antioxidant Activity ◽  
Phenolic Components ◽  
Pharmaceutical Industries

Clausena lansium (Lour.) Skeels, commonly known as “wampee,” is an excellent food ingredient of medicinal value. Effects of leaf developmental stages on the composition of phenolics, flavonoids, and antioxidant activity were investigated. Phenolics composition was studied using HPLC-PAD, whereas antioxidant activity was estimated by oxygen radical absorbance capacity (ORAC) and cellular antioxidant activity (CAA) assays. Increase in bound flavonoids, quercetin, and cellular antioxidant activity was observed in bound and free fractions at different stages of leaf development. Predominantly, quercetin and ferulic acid contents were high in free and bound fractions of old leaves. In addition, phenolic components depicted highly significant positive association (p < 0.05) with antioxidant activity. Overall, old leaves of wampee have utility value similar to leaf buds, so they could be a more sustainable and economical source of bioactive compounds for commercial application in nutraceutical and pharmaceutical industries.

scholarly journals Evaluation of Antioxidant activity and Phenolic contents of Kinnow mandarin leaf extracts

2020 ◽  
Vol 11 (3) ◽  
pp. 4665-4669
Author(s):  
Rajat Bhola ◽  
Ramesh Joshi
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenol ◽  
Total Phenol Content ◽  
Flavonoid Content ◽  
Leaf Extracts ◽  
Phenolic Components ◽  
Pharmaceutical Industries ◽  
Kinnow Mandarin

Kinnow mandarin is a major citrus fruit crop in India. This study was designed to evaluate Total Phenol content (TPC), Total Flavonoid content (TFC) and antioxidant activity of vegetative and fruit associated leaves extracts of Kinnow at three different times of the year. The results revealed variation in all three parameters chosen: total phenol, flavonoid content as well as antioxidant capacity between vegetative and fruit associated leaves and during different time periods of the study.The TPC and TFC were highest for fruit associated leaf phase II (9.49 ± 0.075 GAE /g dw and 7.74 ± 0.125 QE mg /g dw respectively) whereas antioxidant activity 31.49 ± 0.025 mg AA/g dw was highest for fruit associated leaves phase I extracts. The TPC,TFC and DPPH free radical scavenging activity among the leaf extracts of Kinnow indicated that some non- phenolic components also contributed to the total antioxidant activity in Kinnow leaves extracts examined in the present investigation. To the best of our information, this is the first experiment presenting comprehensive data on TPC, TFC and antioxidant activity for Kinnow leaf extracts. The study further envisaged that the Kinnow leaves may be important sources of antioxidant for food and pharmaceutical industries.

Lernaeocera lusci (Copepoda: Pennellidae) on bib (Trisopterus luscus) from Southampton Water

Parasitology ◽  
1983 ◽  
Vol 86 (1) ◽  
pp. 161-173 ◽  
Author(s):  
N. A. Evans ◽  
P. J. Whitfield ◽  
R. N. Bamber ◽  
P. M. Espin
Keyword(s):  
Developmental Stages ◽  
Marked Effect ◽  
Cooling Water ◽  
Positive Association ◽  
Parasitic Copepod ◽  
Infected Fish ◽  
The Body ◽  
Significant Positive Association ◽  
Southampton Water ◽  
The Mean

SUMMARYO-group bib, Trisopterus luscus caught on the cooling water intake screens of Fawley Power Station in March and April 1982 were infected (prevalence = 34·8%; intensity = 1·65/infected fish) with adult females of the pennellid parasitic copepod Lernaeocera lusci. The bib sample of 293 fish was divided, for analysis, into 5 length classes. In each of these the level of parasitization with L. lusci was broadly similar and in all 5 classes the parasite population was over-dispersed. Of the living copepods on T. luscus, 93% possessed egg strings while the remaining 7% consisted of earlier developmental stages. The majority of the parasites were attached to gill arches and here they exhibited distinct microhabitat and orientation preferences. A 3–2–4–1 descending order of gill arch utilization was apparent and copepods were non-randomly distributed along the dorso-ventral axis of gill arches with medial and ventral sectors being more heavily used than dorsal ones. An analysis was carried out on the body and egg string wet weights of parasites removed from fish harbouring different parasite densities. As copepod density increased neither the mean parasite body weight nor egg string weight altered significantly. Length/weight relationships of uninfected and infected fish were remarkably similar and thus provided no evidence that L. lusci has a marked effect on the condition of O-group T. luscus. The study demonstrated a significant positive association between infection with L. lusci and heavy infections with metacercarial cysts of Cryptocotyle lingua.

LOW ANTIOXIDANT ACTIVITY IN SERUM OF PREMATURE NEONATES

PEDIATRICS ◽  
1989 ◽  
Vol 83 (3) ◽  
pp. 392-392
Author(s):  
Student
Keyword(s):  
Antioxidant Activity ◽  
Birth Weight ◽  
Positive Association ◽  
Heme Iron ◽  
Significant Positive Association ◽  
Premature Neonates ◽  
Non Heme Iron

Antioxidant activity showed a significant positive association with birth-weight . . . The present data suggest one important effect of increased non-heme iron may be to neutralize much of the premature infant's scarce antioxidant activity, thereby sharply increasing vulnerability to oxygen.

Perceived Overprotection and Its Association With Quality of Life in Dementia

GeroPsych ◽  
2019 ◽  
Vol 32 (3) ◽  
pp. 125-134
Author(s):  
Mechthild Niemann-Mirmehdi ◽  
Andreas Häusler ◽  
Paul Gellert ◽  
Johanna Nordheim
Keyword(s):  
Quality Of Life ◽  
Patient Autonomy ◽  
Positive Association ◽  
Well Being ◽  
Negative Association ◽  
Significant Positive Association ◽  
Cross Sectional ◽  
People With Dementia ◽  
Mental Well Being

Abstract. To date, few studies have focused on perceived overprotection from the perspective of people with dementia (PwD). In the present examination, the association of perceived overprotection in PwD is examined as an autonomy-restricting factor and thus negative for their mental well-being. Cross-sectional data from the prospective DYADEM study of 82 patient/partner dyads (mean age = 74.26) were used to investigate the association between overprotection, perceived stress, depression, and quality of life (QoL). The analyses show that an overprotective contact style with PwD has a significant positive association with stress and depression, and has a negative association with QoL. The results emphasize the importance of avoiding an overprotective care style and supporting patient autonomy.

The Nexus Between Urbanisation and Human Empowerment: Income Group Based Findings of Bidirectional Causality

2019 ◽  
Vol 64 (1) ◽  
pp. 5-15
Author(s):  
Christos Kollias ◽  
Panayiotis Tzeremes
Keyword(s):  
Human Rights ◽  
Positive Association ◽  
Income Group ◽  
Academic Discourse ◽  
Access To Education ◽  
Democratic Institutions ◽  
Significant Positive Association ◽  
Public Action ◽  
Income Groups ◽  
Democratic Rule

Abstract The economic and social drivers of democratisation and the emergence and establishment of democratic institutions are longstanding themes of academic discourse. Within this broad body of literature, it has been argued that the process of urbanisation is also conducive to the emergence and consolidation of democracy through a number of different channels. Cities offer better access to education and facilitate organised public action and the demand for more democratic rule and respect of human rights. The nexus between urbanisation and human rights is the theme that is taken up in the present paper. Using a sample of 123 countries for the period 1981–2011, the paper examines empirically the association between urbanisation and human empowerment using the Cingranelli-Richards Index. In broad terms, the findings reported herein do not point to a strong nexus across all income groups. Nevertheless, there is evidence suggesting the presence of such a statistically significant positive association in specific cases.

Empirical analysis on corporate environmental performance and environmental disclosure in an emerging market context

2020 ◽  
Vol 15 (6) ◽  
pp. 1061-1082 ◽  
Author(s):  
Merve Acar ◽  
Hüseyin Temiz
Keyword(s):  
Environmental Performance ◽  
Emerging Market ◽  
Positive Association ◽  
Corporate Environmental Performance ◽  
Tobit Regression ◽  
Environmental Reporting ◽  
Environmental Disclosure ◽  
Significant Positive Association ◽  
Content Type ◽  
Environmental Disclosures

PurposeThe purpose of this study is to investigate the association between environmental performance of firms and the level of voluntary environmental disclosure in emerging markets.Design/methodology/approachWe used tobit regression OLS and t-test methods to reveal the association between environmental performance and the level of voluntary environmental disclosure.FindingsWe find a significant positive association between the level of discretionary environmental disclosures and corporate environmental performance. The result is in line with the arguments of economics disclosure theory that argues environmentally good performers disclose more.Practical implicationsMany of the environmentally good firms in Turkey are also listed in the “BIST Sustainability Index,” and this situation can be the result of the relative power of external regulations. Accordingly, it can be suggested to increase the community and governmental pressures for environmental reporting but also gives importance to increase intrinsic motivations for companies to engage in disclosure practices.Originality/valueThis study shed light on relation between environmental performance and environmental disclosure in an emerging market context. Also, it is revisited that the relation between environmental performance and the level of environmental disclosure by testing two different predictions on the level of environmental disclosures.

scholarly journals Can Anhedonia Be Considered a Suicide Risk Factor? A Review of the Literature

Medicina ◽  
2019 ◽  
Vol 55 (8) ◽  
pp. 458 ◽  
Author(s):  
Bonanni ◽  
Gualtieri ◽  
Lester ◽  
Falcone ◽  
Nardella ◽  
...  
Keyword(s):  
Suicidal Behavior ◽  
Affective Disorders ◽  
Suicide Attempts ◽  
Positive Association ◽  
Negative Association ◽  
Schizophrenia Spectrum Disorders ◽  
Post Traumatic Stress ◽  
Significant Positive Association ◽  
Search Terms ◽  
Schizophrenia Spectrum

Background and Objectives: At present, data collected from the literature about suicide and anhedonia are controversial. Some studies have shown that low levels of anhedonia are associated with serious suicide attempts and death by suicide, while other studies have shown that high levels of anhedonia are associated with suicide. Materials and Methods: For this review, we searched PubMed, Medline, and ScienceDirect for clinical studies published from 1 January 1990 to 31 December 2018 with the following search terms used in the title or in the abstract: “anhedonia AND suicid*.” We obtained a total of 155 articles; 133 items were excluded using specific exclusion criteria, the remaining 22 articles included were divided into six groups based on the psychiatric diagnosis: mood disorders, schizophrenia spectrum disorders, post-traumatic stress disorder (PTSD), other diagnoses, attempted suicides, and others (healthy subjects). Results: The results of this review reveal inconsistencies. Some studies reported that high anhedonia scores were associated with suicidal behavior (regardless of the diagnosis), while other studies found that low anhedonia scores were associated with suicidal behavior, and a few studies reported no association. The most consistent association between anhedonia and suicidal behavior was found for affective disorders (7 of 7 studies reported a significant positive association) and for PTSD (3 of 3 studies reported a positive association). In the two studies of patients with schizophrenia, one found no association, and one found a negative association. For patients who attempted suicide (undiagnosed), one study found a positive association, one a positive association only for depressed attempters, and one a negative association. Conclusions: We found the most consistent positive association for patients with affective disorders and PTSD, indicating that the assessment of anhedonia may be useful in the evaluation of suicidal risk.

scholarly journals Transcriptome Analysis of Ginkgo biloba L. Leaves across Late Developmental Stages Based on RNA-Seq and Co-Expression Network

Forests ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 315
Author(s):  
Hailin Liu ◽  
Xin Han ◽  
Jue Ruan ◽  
Lian Xu ◽  
Bing He
Keyword(s):  
Ginkgo Biloba ◽  
Leaf Development ◽  
Developmental Stages ◽  
Leaf Growth ◽  
Rna Seq ◽  
Final Size ◽  
Dioecious Species ◽  
Related Factors ◽  
New Genes ◽  
Gene Modules

The final size of plant leaves is strictly controlled by environmental and genetic factors, which coordinate cell expansion and cell cycle activity in space and time; however, the regulatory mechanisms of leaf growth are still poorly understood. Ginkgo biloba is a dioecious species native to China with medicinally and phylogenetically important characteristics, and its fan-shaped leaves are unique in gymnosperms, while the mechanism of G. biloba leaf development remains unclear. In this study we studied the transcriptome of G. biloba leaves at three developmental stages using high-throughput RNA-seq technology. Approximately 4167 differentially expressed genes (DEGs) were obtained, and a total of 12,137 genes were structure optimized together with 732 new genes identified. More than 50 growth-related factors and gene modules were identified based on DEG and Weighted Gene Co-expression Network Analysis. These results could remarkably expand the existing transcriptome resources of G. biloba, and provide references for subsequent analysis of ginkgo leaf development.

scholarly journals Autophagic Markers in Chordomas: Immunohistochemical Analysis and Comparison with the Immune Microenvironment of Chordoma Tissues

Cancers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 2169
Author(s):  
Georgia Karpathiou ◽  
Maroa Dridi ◽  
Lila Krebs-Drouot ◽  
François Vassal ◽  
Emmanuel Jouanneau ◽  
...  
Keyword(s):  
Tumor Cell ◽  
Immune Cells ◽  
Immune Cell ◽  
Positive Association ◽  
Immunohistochemical Analysis ◽  
Vascular Density ◽  
Immune Microenvironment ◽  
Significant Positive Association ◽  
Sequestosome 1 ◽  
Cell Expression

Chordomas are notably resistant to chemotherapy. One of the cytoprotective mechanisms implicated in chemoresistance is autophagy. There are indirect data that autophagy could be implicated in chordomas, but its presence has not been studied in chordoma tissues. Sixty-one (61) chordomas were immunohistochemically studied for autophagic markers and their expression was compared with the expression in notochords, clinicopathological data, as well as the tumor immune microenvironment. All chordomas strongly and diffusely expressed cytoplasmic p62 (sequestosome 1, SQSTM1/p62), whereas 16 (26.2%) tumors also showed nuclear p62 expression. LC3B (Microtubule-associated protein 1A/1B-light chain 3B) tumor cell expression was found in 44 (72.1%) tumors. Autophagy-related 16‑like 1 (ATG16L1) was also expressed by most tumors. All tumors expressed mannose-6-phosphate/insulin-like growth factor 2 receptor (M6PR/IGF2R). LC3B tumor cell expression was negatively associated with tumor size, while no other parameters, such as age, sex, localization, or survival, were associated with the immunohistochemical factors studied. LC3B immune cell expression showed a significant positive association with programmed death-ligand 1 (PD-L1)+ immune cells and with a higher vascular density. ATG16L1 expression was also positively associated with higher vascular density. Notochords (n = 5) showed different immunostaining with a very weak LC3B and M6PR expression, and no p62 expression. In contrast to normal notochords, autophagic factors such as LC3B and ATG16L1 are often present in chordomas, associated with a strong and diffuse expression of p62, suggesting a blocked autophagic flow. Furthermore, PD-L1+ immune cells also express LC3B, suggesting the need for further investigations between autophagy and the immune microenvironment.

scholarly journals HPLC-DAD Polyphenolic Profiling and Antioxidant Activities of Sorghum bicolor during Germination

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 417
Author(s):  
Ioana Otilia Ghinea ◽  
Maria Daniela Ionica Mihaila ◽  
Giorgiana-Valentina Blaga (Costea) ◽  
Sorin Marius Avramescu ◽  
Mihaela Cudalbeanu ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Sorghum Bicolor ◽  
Antioxidant Activities ◽  
Total Phenolic ◽  
Radical Scavenger ◽  
Ultrasound Assisted Extraction ◽  
Food Ingredient ◽  
Radical Scavenger Activity ◽  
Scavenger Activity ◽  
Sorghum Grains

The purpose of this study was to assess the suitability of the Romanian Albanus hybrid of Sorghum bicolor as a potential functional food ingredient. Ultrasound-assisted extraction in different solvents, together with spectrophotometric and chromatographic methods, was used to monitor the variation in total phenolic and flavonoid content and the antioxidant activity of raw sorghum grains before and during short germination periods (24, 36 and 48 h). The High-Performance Liquid Chromatography with Diode-Array Detection (HPLC-DAD) investigation of the extracts revealed that the ungerminated sorghum grains extracted with methanol had the highest diversity of phenolic compounds, while the total phenolic content (TPC) was the highest after 36 h of germination in both extract types: 1853 mg GAE/100 g for the methanolic extract and 1726 mg GAE/100 g for the ethanolic extract. The findings of this study showed that the TPC of sorghum extracts is strongly correlated with their antioxidant activity and, overall, that the studied extracts presented a good radical scavenger activity, which supports the benefits of alimentary uses of Sorghum bicolor grains.

Sign in / Sign up

Export Citation Format

Share Document