scholarly journals Alterations of Stress Parameters and Histology of Asian Catfish (Pangasius hypophthalmus) in Transport

Author(s):  
Semra Küçük ◽  
Sema Midilli ◽  
Deniz Çoban

Stress parameter changes (cortisol, glucose, sodium and chloride) and histological alterations (gills, liver, kidney, and spleen) in Asian Catfish (Pangasius hypophthalmus) in transport were investigated. In this study, three separated trials were fulfilled. These were without tricaine, 40 and 60 mg L-1 of tricaine, respectively. Each trial consisted of 4 stages, control (C), transfer (AT), transport (TP) and recovery (24 h). After each stage, blood samples were taken and then, gills, liver, kidney, and spleen samples were collected for histological examination. In the transport without tricaine, the fish glucose increased from 50-60 mg dL-1 to 70-80 mg dL-1 and cortisol increased from 30 ng dL-1 to 90 ng dL-1 in. Sodium was 127-132 meq L-1 in the AT and TP, while 138 meq L-1 in the C and recovery. Cloride changed 103 meq L-1 in the TP, while approximately 107 meq L-1 in C, AT and recovery in the transport without tricaine. In the second trial, the fish glucose increased from 50-65 mg dL-1 to 80-90 mg dL-1 cortisol decreased from 60-70 ng dL-1 to 35-45 ng dL-1 in the transport with 40 mg L-1 of tricaine. Sodium was 130-140 meq L-1 in the C and recovery, while 125 meq L-1 in the AT and TP. Chloride was about 110 meq L-1 in the C, AT and recovery, while 102 meq L-1 in the TP in the transport with 40 mg L-1 of tricaine. In the third trial, the fish glucose was 40-55 mg dL-1 in the C, AT and TP, while 25-30 mg dL-1 in the recovery. Cortisol was 35-40 ng dL-1 in the C and AT, while 25 ng dL-1 in the TP and recovery. Sodium was 126-128 meq L-1 in the C, AT and recovery, while about 119-122 meq L-1 in the TP. Chloride was 110 meq L-1 in the C, AT and recovery, while 104-106 meq L-1 in the TP in the transport with 60 mg L-1 of tricaine. The end of the experiment, it is realized that the usage of the tricaine had positive effects on Asian catfish transport.

1971 ◽  
Vol 49 (1) ◽  
pp. 129-131 ◽  
Author(s):  
F. S. Abbott ◽  
M. B. Favreau

Thirty-eight Fundulus heteroclitus were tested for ability to adapt to white and black backgrounds. They were then hypophysectomized and distributed individually to white and black containers. Their ability to adapt to background was determined for periods up to 2 weeks. Sixteen operated fish retained their preoperative ability to adapt; 8 became dark temporarily; 14 became persistently dark. Histological examination confirmed the result of the operation. In the third group of fish the persistent darkness was not associated with damage to specific areas of the brain although damage was more widespread in this group. It is concluded that hypophysectomy does not interfere with physiological color change in F. heteroclitus. The location of the central relays in the melanophore system could not be determined.


Nanomedicine ◽  
2021 ◽  
Author(s):  
Haq Nawaz ◽  
Iqra Naseem ◽  
Tanzila Rehman ◽  
Mubashir Nawaz

Aim: To optimize the Zinc oxide nanoparticles (ZnONPs)-catalyzed in vitro photolysis of bilirubin and to test their effect on bilirubin clearance in vivo. Materials & methods: ZnONPs, synthesized in an alkaline medium, were characterized. Response surface methodology was used to optimize the in vitro photolysis catalyzed by the nanoparticles (NPs). Blood samples from phenylhydrazine-induced hyperbilirubinemic rabbits which had been administered ZnONPs and UV light were analyzed to assess in vivo clearance of bilirubin. Results: The ZnONP-assisted UV treatment showed the linear and quadratic positive effects on the in vitro bilirubin photolysis with an optimal photolysis of bilirubin at 225 mg dl-1 concentration of ZnONPs and a UV exposure of 1.80 h. The ZnONP-assisted phototherapy of hyperbilirubinemic animals was also found to be more effective for in vivo clearance of bilirubin than phototherapy alone. Conclusion: After further trials, ZnONP-assisted phototherapy could be a potential treatment for hyperbilirubinemia in humans.


2021 ◽  
pp. 135245852110521
Author(s):  
Alyssa A Toorop ◽  
Theo Rispens ◽  
Eva MM Strijbis ◽  
Bob W van Oosten ◽  
Brigit A de Jong ◽  
...  

In women with very active multiple sclerosis (MS), natalizumab can be continued during pregnancy to prevent rebound disease activity. Our aim was to evaluate changes in serum natalizumab trough concentrations during pregnancy. Blood samples of 3 patients were collected before, during, and after pregnancy. Natalizumab trough concentrations gradually decreased during pregnancy. The patient with the lowest trough concentrations during the third trimester was treated with extended interval dosing (EID). After delivery, natalizumab concentrations increased to similar levels as before pregnancy. All patients remained clinically and radiologically stable. MS neurologists should be aware of decreasing natalizumab concentrations during pregnancy, especially in patients with low initial trough concentrations and patients with EID.


2020 ◽  
pp. 1428-1441
Author(s):  
Fakhri Issaoui ◽  
Toumi Hassen ◽  
Touili Wassim

The strategic goal of this paper is to study the effects of the prevention policies against money laundering on growth in the gulf countries (Saudi Arabia, Kuwait, Qatar, Bahrain, UAE and Oman) from 1980 to 2014. Thus, the logistic regression (logit model) had given three fundamental results. The first had shown that the main policies in matter of fight against money laundering (anti money laundering law AMLL, suspicious transaction reporting STR, the criminalizing of terrorist financing CTF) have had positive effects on the increasing of probabilities to realize more growth. The second is that the said policies have had positive effects on the increasing of the degree of openness of the whole sample. The third is that the variable (proximity) had a positive and significant effect on anti-money laundering policies.


2016 ◽  
Vol 16 (2) ◽  
pp. 239-260 ◽  
Author(s):  
Shinan Hao ◽  
Qiqi Gao

AbstractWhat drove the East Asian tide of democratization during the “Third Wave?” Instead of focusing on a single-factor explanation, we perform qualitative comparative analysis (QCA) on fourteen cases in the region of East Asia from 1980 to 2000 and find three parallel pathways: (1) overthrow model, which features the positive effects of mass mobilization against authoritarianism under a deinstitutionalized authoritarian regime; (2) urban pressure model that works under an institutionalized authoritarian regime; and (3) inside-out model, in which democratization is triggered by the joint forces of domestic and international conditions under both types of regimes. These results demonstrate that the authoritarianstatus quo anteis an important determinant of democratic transitions.


2021 ◽  
Vol 28 (3) ◽  
pp. 308-317
Author(s):  
Tamires Ferri Izzo ◽  
Maria Juana Beatriz Lima Candanedo ◽  
Aline Yumi Higuti ◽  
Lucas Magalhães Corrêa ◽  
Dayane Melo Campos ◽  
...  

ABSTRACT The evolution of dementia is strongly related to cognitive, motor, and functional changes and to the presence of cardiovascular diseases. Disturbances vary according to phase of dementia and can limit instrumental and basic activities of daily living. The aim of this study was to analyze the immediate physiological effects of listening to music before physical exercise in institutionalized older people with moderate to advanced dementia. A randomized trial was conducted with 18 institutionalized older people with dementia (mean age was 79 years old, 52.6% were female), who were divided into a Training with Music Group (TWMG) and a Training without Music Group (TWtMG). The evaluation included heart rate (HR), blood pressure (BP) and HR variability (HRV). The assessment was conducted in a closed environment or in places with minimal visual and auditory stimulation. The TWMG was submitted to stimuli with music for 15 minutes and physical exercises for 30 minutes to improve/maintain their global mobility. The TWtMG performed the same physical exercises, however without music before physical exercise. The interventions lasted 12 weeks, and were performed individually once a week. In the TWMG, we observe a decrease in diastolic BP in the third session. In the sixth week, the HR increased after the session in both groups. TWMG improved HRV in the third session, with a difference between groups only after the session. After the sixth session, HRV values improved in both groups. In conclusion, listening to music before physical exercise is associated with positive effects in people with dementia, as it tends to maintain and improve physiological factors.


Author(s):  
Michela Piccarozzi ◽  
Cecilia Silvestri ◽  
Alessandra Stefanoni

The third mission of the university has developed over the years, becoming a key aspect of university policy. The spin-offs are increasingly prosperous and innovative. Over the last decade University spin-offs in Italy have developed, but there are many difficulties that hinder the creation and success of such initiatives. A recent regulatory intervention, however, has created the conditions to overcome these difficulties by introducing the theme of innovative start-ups. Through the analysis of this issue we want to emphasize if these start-ups can contribute to the optimal development of spin-offs.


2011 ◽  
Vol 5 (3) ◽  
pp. 216-225 ◽  
Author(s):  
Tiago Nascimento Ordonez ◽  
Thaís Bento Lima-Silva ◽  
Meire Cachioni

Abstract Objectives: The present study sought to characterize the degree of general satisfaction with life and degree of satisfaction on four domains: health, physical capacity, mental capacity and social involvement, and to determine the characteristics of self-reports of individuals enrolled on the program in relation to their psychological well-being focusing on the dimensions: autonomy, personal growth, control, positive relationships with others, purpose, personal acceptance and generativity, and to analyse the effect of time studying on level of well-being. Method: A total of 140 elderly students of a University for the Third Age took part in the study. The Global Satisfaction With Life Scale and the Self Development Scale (with six psychological well-being subscales) were applied. Continuous variables for the two groups were compared using the Mann-Whitney test. Spearman's correlation coefficient was used to analyze the relationship among numeric variables. Internal consistency of the instrument scales was analysed by calculating Cronbach's alpha coefficient. Results: Results showed that students who had attended the University of the Third Age for six months or longer had a higher level of satisfaction with life and greater psychological adjustment compared with new entrants to the same institution. Conclusion: The study results confirmed the positive effects of continuing education on the well-being of elderly and its contribution to successful aging.


1983 ◽  
Vol 245 (4) ◽  
pp. R541-R548 ◽  
Author(s):  
C. Simon-Oppermann ◽  
D. Gray ◽  
E. Szczepanska-Sadowska ◽  
E. Simon

A device for chronic implantation was developed that allowed sampling of cerebrospinal fluid (CSF) from the anterior part of the third cerebral ventricle (A3V) of dogs in repeated experiments for up to 4 mo. Osmolalities, electrolyte concentrations, and concentrations of arginine vasopressin (AVP) measured with a radioimmunoassay were determined in repeated experiments on the chronically prepared animals under conditions of normal hydration, both in the conscious state and during inhalation anesthesia. In conscious dogs, AVP concentrations in plasma and CSF were 3.3 +/- 0.4 and 21.8 +/- 2.5 pg X ml-1, respectively. During anesthesia without surgical interference, the AVP concentrations in plasma and CSF were increased twofold above the levels obtained in conscious dogs. During the time of observation (180 min) all measured parameters remained constant. The AVP concentrations in plasma and CSF samples collected during the surgical procedure of device implantation were about 10-fold higher than in the samples collected during the conscious state. Thus, in each experimental condition, AVP concentration in the CSF collected from the A3V was consistently higher than that in the simultaneously collected blood samples.


1967 ◽  
Vol 41 (4) ◽  
pp. 285-290 ◽  
Author(s):  
Karen R. Clarke

1. 24: rats were infected with 5,000 N.brasiliensislarvae and were examined hourly from 12 to 24 hours after infection for larvae in the blood and the lymph nodes.2. Larvae were found in small numbers in the blood and the lymph nodes; the maximum number of positive blood samples occurring sooner after infection than the maximum number of positive lymph nodes.3. These results were discussed particularly in relation to the timing of the skin to lung migration, and it was concluded that the larvae ofN. brasiliensismigrate mainly in the blood but also in the lymph.


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