scholarly journals Weight-dependent susceptibility of tilapia to tilapia lake virus infection

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11738
Author(s):  
Sri Rajiv Kumar Roy ◽  
Jidapa Yamkasem ◽  
Puntanat Tattiyapong ◽  
Win Surachetpong
Keyword(s):  
Disease Surveillance ◽  
Management Practices ◽  
Negative Impact ◽  
Virulent Strain ◽  
Small Fish ◽  
Cumulative Mortality ◽  
Fish Weight ◽  
The Mean ◽  
The Impact ◽  
Weight Groups

The emergence of tilapia lake virus (TiLV) has had a severely negative impact on global tilapia aquaculture. TiLV infection has been reported at different life stages of tilapia, with more emphasis on fry and fingerlings; however, the virulence and pathology of TiLV at different tilapia size remains unexplored. In this study, tilapias from a single spawning were raised to 5 g, 25 g, and 65 g, and subsequently challenged by the intraperitoneal injection and cohabitation of a virulent strain of TiLV. The cumulative mortality, viral load, and histopathology of the fish were determined until 22 days post-infection (dpi). The cumulative mortality of the 5 g, 25 g, and 65 g fish was 85% (±1.67), 55% (±2.89), and 51.67% (±7.49), respectively. At 14 dpi, the mean TiLV load in the liver of the 5 g fish was significantly higher than in the 25 g and 65 g fish. All the weight groups showed severe pathological changes in the liver, spleen, and intestine after TiLV infection, but no particular difference was otherwise noted during the study with the exception of higher pathological scores in the liver of the small fish at 14 dpi. Overall, this study indicated that small fish are more susceptible to TiLV infection than large fish. Although multiple factors, including environmental factors, farm management practices, strains of virus could contribute to different susceptibility of fish to viral infection, the present study provides the evidence to support that fish weight affects the mortality and clinical outcome during TiLV infection. More intensive measures such as strict biosecurity and disease surveillance during the susceptible weight should therefore be emphasized to reduce the impact of this virus.

scholarly journals POS0998 SPONDYLOARTHRITIS AND SLEEP DISORDERS

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 767.2-768
Author(s):  
S. Lahrichi ◽  
K. Nassar ◽  
S. Janani
Keyword(s):  
Functional Impairment ◽  
Sleep Disturbances ◽  
Negative Impact ◽  
University Hospital ◽  
Quality Of Sleep ◽  
The Mean ◽  
Sleep Deficit ◽  
Impaired Sleep ◽  
The Impact

Background:Spondyloarthropathies (SpA) are a group of chronic and progressive diseases, characterized in particular by a progressive stiffening of the spine, spreading to neighboring joints or to certain tissues, which could lead in the long term to progressive stiffening and functional impairment. This conditioncancauseinsomnia problems and impaired sleep quality.Objectives:To assess the impact of SpA on the quality of sleep.Methods:This is a retrospective study over a period of 4 years from January 2015 to December 2019, including all the medical records of patients with SpA followed in the Department of Rheumatology of the University Hospital of Ibn Rochd, Casablanca. We evaluated for each patient two validated scores: the Epworth somnolence scale rated from 0 to 24, and the Pittsburgh sleep score rated from 0 to 21 with 7 components. Patients with a psychiatric history or who were followed up for neurological pathologies were excluded.Results:178 patients were included. 60.67% were men with an average age of 36.32 years (14-68 years). 45.01% had axial SpA, 29.77% had psoriatic arthritis, and 25.22% were followed for SpA associated with inflammatory bowel disease. 45% had associated comorbidities: there were 18 diabetics and 34 hypertensive, 16.58% were smokers. Clinically, 85.42% presented a back pain initially on examination, 55% presented a polyarthralgia, and 39.88% an oligoarthritis. 63% had radiological sacroiliitis, and 35.14% had bilateral coxitis. 13.48% had a positive HLA B27 and 58.89% had a positive inflammatory assessment with very high activity indices,with a mean of 4.6. 64.66% of the patients received NSAIDs,of which 11% responded well. 57% were treated with csDMARDs, and 17.86% were treated with biologics. At the time of our study, the mean visual analog scale was 5.84 ± 1.7 out of 10 (2-9). The mean Epworth score was 8.38 ± 5.2 (0-21). 56.1% of patients had no sleep debt, 33.3% had a sleep deficit, and only 10.6% had signs of drowsiness. For the overall Pittsburgh score, the mean was 7.02 ± 3.6 (1-18). The mean of “subjective quality of sleep” was 1.12, “sleep latency” was 1.22, “duration of sleep” was 1.06, “usual sleep efficiency” was 0.74, “Sleep disturbance” of 1.28, “use of a sleep medication” of 0.54, and the average of the component concerning “poor shape during the day” was 1.03 out of 3. The LEQUESNE index went from an average of 6 to 8, which corresponds to an average handicap (P = 0.2) over a period of 3 years. 68% of the patients had an alteration in the quality of sleep, starting on average three years after the onset of symptoms. 11% reported having experiencedanxiety and depressive symptoms, and reported having used antidepressants or anxiolytics in the past 5 years.Conclusion:Our study showed the negative impact of SpA on the duration and overall quality of sleep. The degree of pain as well as functional impairment can cause and worsen sleep disturbances in SpA. We have shown that the Pittsburg score increases significantly with the increase of pain.The Lequesne score and that the Epworth score increase with disease activity[1].References:[1]StolwijkC,vanTubergenA,Castillo-OrtizJD,BoonenA.Prevalenceofextra-articularmanifestationsinpatientswithankylosingspondylitis:asystematicreviewandmeta-analysis.AnnRheumDis2015;74:65—73.Disclosure of Interests:None declared.

scholarly journals PRE- and POST-STORM LiDAR SURVEYS FOR ASSESSMENT OF IMPACT ON COASTAL EROSION

2019 ◽  
Vol XLII-3/W8 ◽  
pp. 261-266
Author(s):  
A.-L. Montreuil ◽  
M. Chen ◽  
A. Esquerré ◽  
R. Houthuys ◽  
R. Moelans ◽  
...  
Keyword(s):  
Management Practices ◽  
Morphological Changes ◽  
Storm Surges ◽  
High Water ◽  
Water Levels ◽  
Airborne Lidar ◽  
Coastline Change ◽  
The Mean ◽  
The Impact

<p><strong>Abstract.</strong> Sustainable management of the coastal resources requires a better understanding of the processes that drive coastline change. The coastline is a highly dynamic sea-terrestrial interface. It is affected by forcing factors such as water levels, waves, winds, and the highest and most severe changes occur during storm surges. Extreme storms are drivers responsible for rapid and sometimes dramatic changes of the coastline. The consequences of the impacts from these events entail a broad range of social, economic and natural resource considerations from threats to humans, infrastructure and habitats. This study investigates the impact of a severe storm on coastline response on a sandy multi-barred beach at the Belgian coast. Airborne LiDAR surveys acquired pre- and post-storm covering an area larger than 1 km<sup>2</sup> were analyzed and reproducible monitoring solutions adapted to assess beach morphological changes were applied. Results indicated that the coast retreated by a maximum of 14.7 m where the embryo dunes in front of the fixed dunes were vanished and the foredune undercut. Storm surge and wave attacks were probably the most energetic there. However, the response of the coastline proxies associated with the mean high water line (MHW) and dunetoe (DuneT) was spatially variable. Based on the extracted beach features, good correlations (r>0.73) were found between coastline, berm and inner intertidal bar morphology, while it was weak with the most seaward bars covered in the surveys. This highlights the role of the upper features on the beach to protect the coastline from storm erosion by reducing wave energy. The findings are of critical importance in improving our knowledge and forecasting of coastline response to storms, and also in its translation into management practices.</p>

scholarly journals Phosphorus and Zinc Fertilization Improve Zinc Biofortification in Grains and Straw of Coarse vs. Fine Rice Genotypes

Agronomy ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1155
Author(s):  
Amanullah ◽  
Inamullah ◽  
Mona S. Alwahibi ◽  
Mohamed Soliman Elshikh ◽  
Jawaher Alkahtani ◽  
...  
Keyword(s):  
Management Practices ◽  
Field Experiments ◽  
Negative Impact ◽  
Oryza Sativa L ◽  
Crop Productivity ◽  
Continuous Cropping ◽  
Rice Varieties ◽  
Rice Grains ◽  
Rice Genotypes ◽  
The Impact

Continuous cropping of rice (Oryza sativa L.) and wheat (Triticum aestivum L.) deplete soil fertility and reduce crop productivity as well as zinc (Zn) concentrations in rice grains and straw. Low Zn concentrations in rice grains have a negative impact on human health, while low Zn concertation in rice straw creates a nutritional problem for animals. The current high yielding rice varieties and hybrids remove large quantities of Zn from the soils, lowering the residual concentrations of soil Zn for the subsequent crop (e.g., wheat). Field experiments were conducted on farmers field in Malakand with the objective to evaluate the impact of various combinations of phosphorus (0, 40, 80, and 120 kg ha−1) and Zn levels (0, 5, 10, and 15 kg ha−1) on biofortification of Zn in grains and straw of rice genotypes [fine (Bamati-385) vs. coarse (Fakhre-e-Malakand and Pukhraj)]. The results revealed that Zn biofortification in rice genotypes increased with the integrated use of both nutrients (P + Zn) when applied at higher rates (80 and 120 kg P ha−1, and 10 and 15 kg Zn ha−1, respectively). The biofortification of Zn in both grains and straw was higher in the coarse than fine rice genotypes (Pukhraj > Fakhre-e-Malakand > Basmati-385). It was concluded from this study that the application of higher P and Zn levels increased Zn contents in rice parts (grains and straw) under the rice-wheat system. We also concluded from this study that Zn concentrations in rice grains and straw are influenced by plant genetic factors and Zn management practices.

scholarly journals Impact of non-cystic fibrosis bronchiectasis on critically ill patients in Korea: a retrospective observational study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Youngmok Park ◽  
Seung Hyun Yong ◽  
Ah Young Leem ◽  
Song Yee Kim ◽  
Sang Hoon Lee ◽  
...  
Keyword(s):  
Hospital Mortality ◽  
Odds Ratio ◽  
Negative Impact ◽  
Icu Mortality ◽  
Chest Computed Tomography ◽  
Lower Survival Rate ◽  
All Cause Mortality ◽  
Hospital Stays ◽  
The Mean ◽  
The Impact

AbstractThis study investigated the impact of bronchiectasis on patients admitted to the intensive care unit (ICU) at a hospital in Korea. Patients with bronchiectasis were diagnosed using results of chest computed tomography performed before ICU admission. The severity of bronchiectasis was based on the number of affected lobes, and patients with ≥ 3 bronchiectatic lobes were classified into the severe bronchiectasis group. Overall, 823 patients were enrolled. The mean age was 66.0 ± 13.9 years, and 63.4% were men. Bronchiectasis and severe bronchiectasis were present in 148 (18.0%) and 108 (13.1%) patients, respectively. The increase in the number of bronchiectatic lobes was related to the rise in ICU mortality (P for trend = 0.012) and in-hospital mortality (P for trend = 0.004). Patients with severe bronchiectasis had higher odds for 28-day mortality [odds ratio (OR) 1.122, 95% confidence interval (CI) 1.024–1.230], ICU mortality (OR 1.119, 95% CI 1.023–1.223), and in-hospital mortality (OR 1.208, 95% CI 1.092–1.337). The severe bronchiectasis group showed lower overall survival (log-rank P < 0.001), and the adjusted hazard ratio was 1.535 (95% CI 1.178–2.001). Severe bronchiectasis had a negative impact on all-cause mortality during ICU and hospital stays, resulting in a lower survival rate.

scholarly journals Total Blood Lymphocyte Count Alteration During and after Pregnancy

2016 ◽  
pp. 1 ◽  
Author(s):  
Gökçen Örgül ◽  
Burcu Soyak ◽  
Oytun Portakal ◽  
Meral Beksaç ◽  
M. Sinan Beksaç
Keyword(s):  
Lymphocyte Count ◽  
Blood Lymphocyte ◽  
Complete Blood Count ◽  
Negative Impact ◽  
Post Partum ◽  
University Hospital ◽  
Base System ◽  
Total Blood ◽  
The Mean ◽  
The Impact

<p><strong>Objective:</strong> To investigate the impact of gestational changes on blood lymphocyte count in healthy pregnancies. <br /><strong>Study Design:</strong> This retrospective study is consisted of 108 consecutive normal pregnancies who delivered at our department in December 2015. High-risk pregnancies with poor neonatal outcome and pregnancies with maternal disorders which may affect lymphocyte counts were excluded from the study. “Complete blood count” results of the patients were obtained from the computerized data base system of Hacettepe University Hospital. Blood samples of patients which were withdrawn a) prior to pregnancy (1-6 months before getting pregnant), b) during pregnancy (11-14th gestational weeks) and c) post-partum first day were used in this study.<br /><strong>Results:</strong> The mean blood lymphocyte count was 2049.07 (±758.69) in patients before their pregnancies. The mean lymphocyte count decreased to 1850.93 and 1625 during pregnancy and after delivery respectively. A statistically significant decrease was found between three periods (before, during, and postpartum 1st day) (p:0.003).<br /><strong>Conclusion:</strong> We have shown a significant decrease in total lymphocyte levels during pregnancy, consistent with the data presented in the literature. Pregnancy and related hormones have a negative impact on total blood lymphocyte level.<br /><br /></p>

scholarly journals Antimullerian Hormone Changes after Laparoscopic Ovarian Cystectomy for Endometrioma Compared with the Nonovarian Conditions

2014 ◽  
Vol 2014 ◽  
pp. 1-5
Author(s):  
Chamnan Tanprasertkul ◽  
Sakol Manusook ◽  
Charintip Somprasit ◽  
Sophapun Ekarattanawong ◽  
Opas Sreshthaputra ◽  
...  
Keyword(s):  
Ovarian Reserve ◽  
Negative Impact ◽  
Pelvic Surgery ◽  
Ovarian Cystectomy ◽  
Antimullerian Hormone ◽  
Significant Difference ◽  
The Mean ◽  
Antimüllerian Hormone ◽  
A Prospective Study ◽  
The Impact

Laparoscopic ovarian cystectomy is recommended for surgical procedure of endometrioma. The negative impact on ovarian reserve following removal had been documented. Little evidence had been reported for nonovarian originated effects.Objective.To evaluate the impact of laparoscopic ovarian cystectomy for endometrioma on ovarian reserve, measured by serum antimullerian hormone (AMH), compared to nonovarian pelvic surgery.Materials and Methods.A prospective study was conducted. Women who underwent laparoscopic ovarian cystectomy (LOC) and laparoscopic nonovarian pelvic surgery (NOS) were recruited and followed up through 6 months. Clinical baseline data and AMH were evaluated.Results.39 and 38 participants were enrolled in LOC and NOS groups, respectively. Baseline characteristics (age, weight, BMI, and height) and preoperative AMH level between 2 groups were not statistically different. After surgery, AMH of both groups decreased since the first week, at 1 month and at 3 months. However, as compared to the LOC group at 6 months after operation, the mean AMH of the NOS group had regained its value with a highly significant difference.Conclusion.This study demonstrated the negative impact of nonovarian or indirect effects of laparoscopic surgery to ovarian reserve. The possible mechanisms are necessary for more investigations.

scholarly journals Effect of Long Working Hours on Depression and Mental Well-Being among Employees in Shanghai: The Role of Having Leisure Hobbies

2019 ◽  
Vol 16 (24) ◽  
pp. 4980
Author(s):  
Zan Li ◽  
Junming Dai ◽  
Ning Wu ◽  
Yingnan Jia ◽  
Junling Gao ◽  
...  
Keyword(s):  
Psychological Health ◽  
Negative Impact ◽  
Working Hours ◽  
Well Being ◽  
Working Time ◽  
World Health ◽  
Long Working Hours ◽  
The Mean ◽  
The Impact ◽  
Mental Well Being

Our aim is to examine the associations between long working hours and depression and mental well-being among the working population in Shanghai, as well as to identify the impact of having hobbies on these relationships. A cross-sectional study was conducted in Shanghai, with depression assessed by the Patient Health Questionnaire-9 (PHQ-9) scale and mental well-being assessed by the World Health Organization five-item Well-Being Index (WHO-5) scale. The phenomenon of long working hours (69.3%) was quite common among employees in Shanghai, and the rate of working over 60 h was 19.3%. Those who worked over 60 h had the highest prevalence of poorer mental health compared with individuals working ≤40 h per week. After adjustment in the logistic regression model, those who reported weekly working time over 60 h were 1.40 (95%CI: 1.03–1.90) and 1.66 (95%CI: 1.26–2.18) times more likely to have depression and poor mental well-being (PMWB), respectively. Adjusted ORs for having hobbies were 0.78 (95%CI: 0.62–0.97) and 0.62 (95%CI: 0.51–0.75), respectively. Meanwhile, having hobbies could significantly lower the mean score on the PHQ-9 and elevate the mean score on the WHO-5 in each working time group, with no interaction effect. Long working hours could have a significantly negative impact on workers’ psychological health. Importantly, having hobbies in their daily lives might help to mitigate the adverse effects of long working hours on workers’ depression and mental well-being.

Does interest rate liberalisation affect the constancy of mean interest rates in China?

2020 ◽  
Vol 28 (4) ◽  
pp. 555-568
Author(s):  
Hui Hong ◽  
Zhicun Bian ◽  
Naiwei Chen ◽  
Chiwei Su
Keyword(s):  
Interest Rate ◽  
Interest Rates ◽  
Structural Breaks ◽  
Negative Impact ◽  
Financial Reforms ◽  
Inflationary Expectation ◽  
Content Type ◽  
The Mean ◽  
The Interest Rate ◽  
The Impact

Purpose This paper aims to examine the impact of interest rate liberalisation on the constancy of mean interest rates in China to test the effect of financial reforms and provide strategies for future practices. Design/methodology/approach Bai and Perron’s (1998, 2003) methodology is used to test for structural breaks in the mean of different interest rates using Chinese data, and break dates are measured against the exact dates of the interest rate liberalisation. The performance of mean interest rates across the regimes defined by liberalisation dates is also investigated. Findings The main results show that interest rates generally increase (decrease) after deregulations on lending (deposit) rates, but these changes are not significant to induce a negative impact on the domestic economy. Instead, the infrequent but important shifts (structural breaks) in mean interest rates are caused by factors other than liberalisation such as economic shocks, inflationary expectation and liquidity crunch in China. Originality/value To the best of the author’s knowledge, this paper provides unprecedented evidence on significant changes in interest rates attributable to the liberalisation within the Chinese context.

scholarly journals Off-Farm Employment Effects on Adoption of Nutrient Management Practices

2011 ◽  
Vol 40 (2) ◽  
pp. 293-306 ◽  
Author(s):  
Haluk Gedikoglu ◽  
Laura McCann ◽  
Georgeanne Artz
Keyword(s):  
Household Income ◽  
Management Practices ◽  
Nutrient Management ◽  
Negative Impact ◽  
Positive Impact ◽  
Farm Income ◽  
Conservation Practices ◽  
Record Keeping ◽  
Employment Effects ◽  
The Impact

Off-farm income as a share of total farm household income has been increasing. Previous studies found inconsistent results regarding the impact of off-farm income on adoption of conservation practices. We test the hypothesis that off-farm employment has a positive impact on adoption of capital incentive practices and a negative impact on adoption of labor-intensive practices. The results confirm that adoption of injecting manure into the soil, a capitalintensive practice, is positively and significantly impacted by off-farm employment of the operator. However, off-farm employment variables had no effect on adoption of record keeping.

scholarly journals Effects of Drought on Vegetation Productivity of Farmland Ecosystems in the Drylands of Northern China

2021 ◽  
Vol 13 (6) ◽  
pp. 1179
Author(s):  
Xiufang Zhu ◽  
Ying Liu ◽  
Kun Xu ◽  
Yaozhong Pan
Keyword(s):  
Land Use ◽  
Management Practices ◽  
Negative Impact ◽  
Growing Season ◽  
Northern China ◽  
Natural Vegetation ◽  
Drought Severity ◽  
Vegetation Productivity ◽  
Effects Of Drought ◽  
The Impact

Previous research on the effects of drought on vegetation productivity seldom distinguished the different responses of vegetation ecosystems to drought under different management practices and different land use systems. Studies investigating whether irrigation can buffer the negative impacts of drought on vegetation usually used discontinuous yield data in distribution. In this study, the trends in drought and vegetation productivity in farmlands in the drylands of northern China (DNC) from 2000 to 2018 were studied using the self-calibrated Palmer drought severity index (scPDSI) and enhanced vegetation index (EVI). The differences in the impact of drought on vegetation productivity in irrigated farmland, rainfed farmland, and natural vegetation areas were quantified. The results showed that the growing season scPDSI and EVI showed an increasing trend from 2000 to 2018. Significant correlations between drought anomalies and EVI anomalies were found in both arid drylands and semi-arid drylands. In addition, irrigation mitigated 59.66% of the negative impact caused by drought on irrigated farmland EVI in the growing season. The impact of drought on irrigated farmland EVI in the growing season was 19.98% lower than that on natural vegetation EVI. The impact of drought on natural vegetation EVI was 49.59% lower than that on rainfed farmland EVI. The results of this study refine the vegetation response to drought under different land management practices and land use patterns.

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