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02:08 EDT 16th September 2019 | BioPortfolio

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Showing "study published nature world oldest types fish Coelacanth" PubMed Articles 1–25 of 74,000+

Symptom frequency and change of oldest old cancer patients.

The oldest old, described as those aged 85 and older, is a growing cancer population. There are limited studies evaluating the symptoms of the oldest old cancer patient population. Our study aimed to evaluate symptom frequency and clinical symptom change as assessed by the Edmonton Symptom Assessment System (ESAS) of the oldest old (≥ 85) compared to older adult (65-84) and general adult (18-64) outpatient cancer patients on initial consult and follow-up visit.


Publisher Correction: Science that can change the world.

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

Effect of recreational-fisheries management on fish biodiversity in gravel pit lakes, with contrasts to unmanaged lakes.

We sampled 23 small (< 20 ha) gravel-pit lakes (16 managed and 7 unmanaged) in north-western Germany using littoral electrofishing and multimesh gillnets. Our objective was to compare the fish biodiversity in gravel pit lakes in the presence or absence of recreational fisheries. Given the size of the sampled lakes, we expected species poor communities and elevated fish diversity in the managed systems due to regular stocking of game fish species. Our study lakes were primarily mesotrophic and did not differ...


Combining fish and environmental PCR for diagnostics of diseased laboratory zebrafish in recirculating systems.

Precise knowledge of the health status of experimental fish is crucial to obtain high scientific and ethical standards in biomedical research. In addition to the use of sentinel fish, the examination of diseased fish is a fundamental part of all health monitoring concepts. PCR assays offer excellent sensitivity and the ability to test a broad variety of pathogenic agents in different sample types. Recently, it was shown that analysis of environmental samples such as water, sludge or detritus from static tan...

Zoonotic nematode parasites infecting selected edible fish in New South Wales, Australia.

Despite increases in the annual consumption of seafood in Australia, studies on the occurrence and prevalence of zoonotic parasites in fish and the risk they may pose to human health are limited. The present study was aimed at determining the occurrence of zoonotic nematodes in commonly consumed fish in New South Wales, Australia's most populous state. Three species of fish, including the Australian pilchard, Australian anchovy, and eastern school whiting, were purchased from a fish market and examined for ...

Clinico-Neuropathological Findings in the Oldest Old from the Georgia Centenarian Study.

Centenarian studies are important sources for understanding of factors that contribute to longevity and healthy aging. Clinico-neuropathological finding is a key in identifying pathology and factors contributing to age-related cognitive decline and dementia in the oldest old.

Prevalence and determinants of driving habits in the oldest old: Results of the multicenter prospective AgeCoDe-AgeQualiDe study.

To present data on the prevalence of driving habits and to identify the determinants of driving habits among the oldest old in Germany.

River network connectivity and fish diversity.

Frequent and severe disruptions of natural river flows associated with human activities significantly alter hydrological connectivity in large river networks, with deleterious effects on fish diversity. Understanding the relationship between fish diversity and river network connectivity is fundamental to ensuring species persistence, ecosystem integrity, and human well-being. Here, we provide a review of the mechanisms by which river network connectivity (RNC) affects fish diversity. We review the relations...

Bibliometric analysis of highly cited articles on ecosystem services.

This paper presents global research trends involving highly cited articles on ecosystem services from 1981 to 2017 based on a bibliometric analysis of such articles from the SCI-E and SSCI databases of the Web of Science. The analysis revealed that there were 132 highly cited articles, most of which were published between 2005 and 2014. Based on author keywords, the term ecosystem services was strongly linked to biodiversity. The top three journals in terms of total number of highly cited articles published...

Universal mitochondrial 16s rRNA biomarker for mini-barcode to identify fish species in Malaysian fish products.

Mislabelling in fish products is a highly significant emerging issue in world fish trade in terms of health and economic concerns. DNA barcoding is an efficient sequencing-based tool for detecting fish species substitution but due to DNA degradation, it is in many cases difficult to amplify PCR products of the full-length barcode marker (~650 bp), especially in severely processed products. In the present study, a pair of universal primers targeting a 198 bp sequence of the mitochondrial 16s rRNA gene was de...

The relationship between the characteristics of rigor mortis related actomyosin and muscle fiber types in the ordinary muscle of various fishes.

Rigor mortis occurs when muscle extension vanishes through the irresistible coupling of actin and myosin by the consumption of ATP as energy. To clarify the cause of the differences in the progression of rigor mortis, seven fish species were used as samples. The superprecipitation reaction and Mg -ATPase activity of actomyosin in dorsal ordinary muscle were measured, and the slope of the regression line between these two variables was calculated for each fish specimen. The fiber types of the dorsal ordinary...

The three 'B' of fish mercury in China: Bioaccumulation, biodynamics and biotransformation.

Mercury (Hg) is a global toxic pollutant and has raised the world's attention for decades. In this study, we reviewed the fish mercury levels in China (both marine and freshwater, as well as wild and farmed) documented over the past decade and their controlling environmental and biological factors. China is the largest contributor of global Hg cycling and the largest nation for the consumption and export of fish and fish product, thus Hg level in fish becomes a critical issue for food safety and public heal...

Cytoplasmic DNA can be detected by RNA fluorescence in situ hybridization.

Fluorescence in situ hybridization (FISH) can be used for the intracellular detection of DNA or RNA molecules. The detection of DNA sequences by DNA FISH requires the denaturation of the DNA double helix to allow the hybridization of the fluorescent probe with DNA in a single stranded form. These hybridization conditions require high temperature and low pH that can damage RNA, and therefore RNA is not typically detectable by DNA FISH. In contrast, RNA FISH does not require a denaturation step since RNA is s...

Mental, physical and social health benefits of immersive nature-experience for children and adolescents: A systematic review and quality assessment of the evidence.

In this systematic review, we summarised and evaluated the evidence for benefits of immersive nature-experience on children and adolescents' mental, physical and social health. An electronic search was performed for English language articles published between January 2004 and May 2017. Data were extracted from 84 publications that met the inclusion criteria. Study quality was assessed for a subset of the studies, i.e. controlled between- and within-subject studies, using a systematic assessment scheme, and ...

Microplastics in the surface sediments from the eastern waters of Java Sea, Indonesia.

This study aimed to investigate the abundance of microplastics in the eastern water of Java Sea. The study areas are well known for the high population and high industrial activities that can contribute to the plastic pollution. Microplastics were sampled from the surface sediments at five different stations representing different local activities: fish landing area (St 1), mangrove forest (St 2), abandoned shrimp pond (St 3), river mouth (St 4) and open sea (St 5). Three types of microplastics were found...

Immunity augmentation in Botia dario (Hamilton, 1822) through carotenoid: a dietary approach.

The immunity and health status of ornamental fish is an important aspect, as they are kept in a confined environment and various stressful conditions which lead to depletion of overall colourful appearance and mortality. The carotenoids can act as immunity boosters in captive aquarium system and may be supplemented in the feed as aquarium fish have no access to natural carotenoids. The study aimed to assess the role of carotenoid on the immunity of B. dario. Marigold petal meal is an important source of car...

Microplastic ingestion in deep-sea fish from the South China Sea.

Monitoring the ingestion of microplastics by fish in the environment is crucial to understanding the risks posed by microplastics in the marine ecosystem. In this study, we investigated the ingestion of microplastics in deep-sea fish from the northern continental slope of the South China Sea. All fish samples were contaminated by microplastics, reflecting a high level of microplastic pollution in this region. The average abundance of microplastics in the stomachs of sampled fish was 1.96 ± 1.12 items/i...

Blood pressure level, hypertension prevalence and control status in oldest old in China.

To investigate blood pressure level, hypertension prevalence and control status in the oldest old in China. A cross-sectional data set of Chinese Longitudinal and Health Longevity Study (CLHLS) in 2014 was used to investigate the blood pressure level and hypertension prevalence and control status in the oldest old. A total of 4 587 elderly people aged ≥80 years were surveyed with mean age (91.3±7.8) years old, including 1 896 males (41.3). The mean SBP was (139.5±22.0) mmHg, DBP was (79.6±11.8) mmHg,...

Biogeography of the fish pathogen Aeromonas salmonicida inferred by vapA genotyping.

A recently described typing system based on sequence variation in the virulence array protein (vapA) gene, encoding the A-layer surface protein array, allows unambiguous subtyping of Aeromonas salmonicida. In the present study we compile A-layer typing results from a total of 675 A. salmonicida isolates, recovered over a 59-year period from 50 different fish species in 26 countries. Nine novel A-layer types (15-23) are identified, several of which display a strong predilection towards certain fish hosts, in...

Short-chain chlorinated paraffins in fish from two developed regions of China: Occurrence, influencing factors and implication for human exposure via consumption.

The risk associated with human exposure to short-chain chlorinated paraffins (SCCPs) via dietary intake are of great concern because of the bioaccumulation potential of SCCPs in biota and adverse effects. Fish are an important food source for human beings. However, there is a paucity of studies on human exposure to SCCPs via fish consumption. In this study, SCCPs were measured in frequently consumed river fish from the Pearl River Delta, and farmed freshwater fish and wild sea fish from the Yangtze River De...

Author misrepresentation of institutional affiliations: protocol for an exploratory case study.

University ranking systems and the publish-or-perish dictum, among other factors, are driving universities and researchers around the world to increase their research productivity. Authors frequently report multiple affiliations in published articles. It is not known if the reported institutional affiliations are real affiliations, which is when the universities have contributed substantially to the research conducted and to the published manuscript. This study aims to establish whether there is an empirica...

Essential and non-essential trace elements in fish consumed by indigenous peoples of the European Russian Arctic.

In present study, the analyses of essential [copper (Cu), cobalt (Co), selenium (Se) and zinc (Zn)] and non-essential elements [mercury (Hg), lead (Pb), cadmium (Cd) and arsenic (As)] in 7 fish species consumed by the indigenous people of the European Russia Arctic were conducted. The Nenets Autonomous Region, which is located in the north-eastern part of European Russia, was chosen as a Region of interest. Within it, the Nenets indigenous group (n = 6000) constitutes approximately 10% of the total popu...

Natural and anthropogenic radionuclides in Norwegian farmed Atlantic salmon (Salmo salar).

Norway is one of the main producers of farmed fish and the world's second-largest exporter of seafood. Farmed Atlantic salmon (Salmo salar) represents the most exported species. This is the first comprehensive survey of anthropogenic (Cs, Sr, Pu, Pu and Am) and natural (K, Ra, Ra, Pb, Po) radionuclides in farmed salmon and manufactured fish feed from Norway. The only anthropogenic radionuclide detected in salmon and fish feed was Cs. The levels were low with arithmetic means in salmon and feed of 0.13 and 0...

Reduced oxidative stress increases acute cold stress tolerance in zebrafish.

Cold stress is a major threat to fish in both nature and aquaculture, and can induce oxidative stress in various fish. While the exact role of oxidative stress in cold-caused mortality is still unknown. The purpose of the present study was to evaluate the effects of oxidative stress on cold tolerance in fish and verify whether changing oxidative status could affect cold tolerance. We firstly demonstrated that acute cold exposure induced high oxidative stress in zebrafish liver, which may lead to mortality. ...

Fishes of the Amazon: diversity and beyond.

The Amazon basin houses a particular group of freshwater organisms, whose study tells the geological history of the region, how biological diversity was shaped, how it is maintained, and what it hides. The fish of the Amazon is represented by more than 3,000 known species distributed from the basal groups up to the more specialized ones. This species richness hides a diversity of adaptations that are dispersed at all levels of the biological organization. In this summary of the conference delivered at the B...


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