scholarly journals Short term effects of restricted food availability and peripheral leptin injections in redheaded bunting, Emberiza bruniceps

2021 ◽  
Vol 13 (4) ◽  
pp. 1430-1436
Author(s):  
Neelu Jain Gupta ◽  
Samya Das ◽  
Anit Kumar ◽  
Sanjay Kumar Bhardwaj ◽  
Nidhi Yadav
Keyword(s):  
Food Intake ◽  
Food Availability ◽  
Migratory Birds ◽  
High Energy ◽  
Daily Basis ◽  
Blood Cholesterol ◽  
Control Group ◽  
Metabolic Efficiency ◽  
Migratory Behaviour ◽  
Food Scarcity

Migratory birds need continued food supply and efficient metabolic machinery to meet high energy demands of the magnanimous feat of flight. Two questions are important i.e. as to 1) how a bird adapts to a temporary food constrain on a daily basis, and 2) how peripheral leptin, an anorectic hormone, impacted feeding and migratory behaviour in buntings? The aim of this study was to induce a non-photoperiodic tweak in the physiology of redheaded buntings through exogenous leptin administration and study its effect on their food intake and migratory behaviour. Groups of male redheaded buntings, Emberiza bruniceps (n=17) were transferred from short (8L: 16D) to long (16L: 8D) days and presented with food only either for first (morning food presence, MFP) or second (evening food presence, EFP) half of the 16h lighted phase, while control group received food ad libitum. Total daily food intake (FI) did not differ significantly between the MFP, EFP and controls, but hourly FI in MFP and EFP indicated increased activity differences based on time of food availability and bird’s tendency to cache food/ recompense for food scarcity during migration. In another experiment, a chemical tweak in bird’s FI was induced by peripheral administration of leptin, to add to current understanding of transition in buntings’ metabolic efficiency during high energy demanding migratory journey. Exogenous leptin appeared to safeguard cadaveric effect of exogenous injection in migrating buntings through promoting blood cholesterol and reduced liver fibrosis. Food restriction in the morning was better responded by buntings than that in evening. Therefore, migratory buntings exhibited diurnal variation in response to food scarcity.

Satiation and compensation for short-term changes in food quality and availability in young Steller sea lions (Eumetopias jubatus)

2004 ◽  
Vol 82 (7) ◽  
pp. 1061-1069 ◽  
Author(s):  
David A.S Rosen ◽  
Andrew W Trites
Keyword(s):  
Food Intake ◽  
Prey Availability ◽  
Energy Content ◽  
High Energy ◽  
Daily Basis ◽  
Eumetopias Jubatus ◽  
Steller Sea Lions ◽  
Short Term ◽  
Sea Lions ◽  
Gross Energy

Foraging theory predicts that animals should proportionately increase their food intake to compensate for reduced food energy content and (or) prey availability. However, the theoretical intake levels will, at some point, exceed the digestive capacity of the predator. We tested the ability of Steller sea lions, Eumetopias jubatus (Schreber, 1776), to compensate for short-term changes in prey energy density and availability, and quantified the maximum amount of food a young sea lion could consume. Five 1–2-year-old captive Steller sea lions were offered either herring (high energy) or capelin (low energy) each day or every second day. When prey were available on a daily basis, the sea lions compensated for differences in the energy content of herring and capelin by consuming sufficient quantities of each (8.3 vs. 14.0 kg·d–1, respectively) to maintain equivalent gross energy intakes. When herring was available only on alternate days, the sea lions increased their consumption by 52% to 11.5 kg·d–1, which was not sufficient to maintain an average gross intake equal to that maintained when herring was available every day. When capelin was available only on alternate days, some animals increased their intake for a few days, but average intake (15.2 kg·d–1) was far below levels observed during daily feeding. Generally, the sea lions appeared to reach their digestive limit at a level equivalent to 14%–16% of their body mass. Our findings suggest that Steller sea lions can alter their food intake in response to short-term changes in prey quality or availability, but that these variables can quickly combine to necessitate food intake levels that exceed the physiological digestive capacities of young animals.

The effect of clenbuterol on body composition in spontaneously eating tumour-bearing mice

1993 ◽  
Vol 13 (6) ◽  
pp. 325-331 ◽  
Author(s):  
Anders Hyltander ◽  
Gösta Svaninger ◽  
Kent Lundholm
Keyword(s):  
Body Composition ◽  
Food Intake ◽  
Tumour Growth ◽  
Statistical Significance ◽  
Dry Weight ◽  
Daily Basis ◽  
Control Group ◽  
Tumour Bearing ◽  
Adult Mice ◽  
Adrenoceptor Agonist

The aim of this study was to investigate the effect of a selective β2-adrenoceptor agonist, clenbuterol, on body composition in tumour-bearing adult and growing mice. Therefore, adult female C57/BL6 mice (n = 20) were inoculated subcutaneously with a 3-methylcholanthrene-induced sarcoma and divided into two identical groups. One group received injections twice a day of clenbuterol corresponding to 1 mg/kg body weight, the other group received sham injections. Growing mice (n = 20) were similarly divided after tumour inoculation into one study group with clenbuterol injections and one control group. The growing animals were sacrificed on day 11 after commencement of treatment, the adult mice on day 16. Clenbuterol treatment had no statistically significant effect on accumulated food intake or body composition in the adult mice. However, fooe intake in these animals increased numerically compared to control animals after day 12 of the study. Tumour growth was also unaffected. The growing animals displayed an increased carcass dry weight with borderline significance (p = 0.06) and an increased quadriceps muscle fat free dry weight after clenbuterol treatment. Tumour growth was not affected. Food intake measured on a daily basis was significantly increased in the growing clenbuterol treated animals and accumulated food intake was increased with a trend towards statistical significance (p = 0.06). The results support the suggestion that treatment with a selective β2-adrenoceptor agonist does not improve body composition in tumour-bearing adult mice relying on spontaneous food intake while growing animals may benefit from such treatment.

scholarly journals THE EFFECT OF NUTRITION EDUCATION AND GYMNASTICS CREATIONS OF SASAK (Rudat dance) AGAINST WEIGHT CHANGE, BMI, AND LIPID PROFILE TO OVERWEIGHT STUDENTS AT NUTRITION DEPARTMENT OF POLITEKNIK KESEHATAN MATARAM

2018 ◽  
Vol 12 (2) ◽  
pp. 124
Author(s):  
Retno Wahyuningsih ◽  
Ni Putu Anita Candri ◽  
Siti Noor Aulya Faridha
Keyword(s):  
Lipid Profile ◽  
Nutrition Education ◽  
Weight Change ◽  
High Energy ◽  
Lifestyle Changes ◽  
Blood Cholesterol ◽  
Control Group ◽  
Group 3 ◽  
Keywords Education ◽  
Group 1

Abstract: The lifestyle changes in some societies today lead to a modern lifestyle, including dietary changes that change to the selection of foods with high energy and fat. Excessive energy consumption becomes the cause of obesity. Obesity, in addition becomes a health problem, also a problem for one's appearance. Obesity is associated with lipid profile. Obesity interventions can be done by setting the diet through nutrition education and exercise in the form of gymnastics creations dance exercises. Objective study was to know the effect of nutrition education (REST diet) and gymnastics creations (Rudat dance) against weight change, BMI, and lipid profile to overweight students at Nutrition Department of Politeknik Kesehatan Mataram. Research Method was Quasi experiment, randomized pre-post control group to 33 students, age 18-22 years. The data were analyzed by Univariat for the distribution of research variables and Bivariate test with different test of Paired t-test. There was significant weight loss in group 1 (χ ± SD: 0.35 kg ± 0.43, p: 0.030), and group 3 (1.72 ± 1.78, p: 0.014). While on IMT decrease in. group 1 (0.15 kg/m2 ± 0.19, p: 0.033), and group 3 (0.68 ± 0.63, p: 0.008). As for the lipid profile, there was no decrease in blood cholesterol levels, and there was a decrease in triglycerides in group 3 (24.4 ± 28.59, p: 0.024). Keywords: Education REST Diet, Creative Gymnastics, Weight, BMI, Lipid Profile, Excess Weight.

scholarly journals Penetration of MeV electrons into the mesosphere accompanying pulsating aurorae

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Y. Miyoshi ◽  
K. Hosokawa ◽  
S. Kurita ◽  
S.-I. Oyama ◽  
Y. Ogawa ◽  
...  
Keyword(s):  
High Energy ◽  
Daily Basis ◽  
Maximum Energy ◽  
Energy Electron ◽  
High Energy Electron ◽  
Whistler Mode ◽  
Chorus Waves ◽  
Mesospheric Ozone ◽  
Field Lines ◽  
Eiscat Radar

AbstractPulsating aurorae (PsA) are caused by the intermittent precipitations of magnetospheric electrons (energies of a few keV to a few tens of keV) through wave-particle interactions, thereby depositing most of their energy at altitudes ~ 100 km. However, the maximum energy of precipitated electrons and its impacts on the atmosphere are unknown. Herein, we report unique observations by the European Incoherent Scatter (EISCAT) radar showing electron precipitations ranging from a few hundred keV to a few MeV during a PsA associated with a weak geomagnetic storm. Simultaneously, the Arase spacecraft has observed intense whistler-mode chorus waves at the conjugate location along magnetic field lines. A computer simulation based on the EISCAT observations shows immediate catalytic ozone depletion at the mesospheric altitudes. Since PsA occurs frequently, often in daily basis, and extends its impact over large MLT areas, we anticipate that the PsA possesses a significant forcing to the mesospheric ozone chemistry in high latitudes through high energy electron precipitations. Therefore, the generation of PsA results in the depletion of mesospheric ozone through high-energy electron precipitations caused by whistler-mode chorus waves, which are similar to the well-known effect due to solar energetic protons triggered by solar flares.

scholarly journals Optimization of Lutein Recovery from Tetraselmis suecica by Response Surface Methodology

Biomolecules ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 182
Author(s):  
Kang Hyun Lee ◽  
Ye Won Jang ◽  
Hansol Kim ◽  
Jang-Seu Ki ◽  
Hah Young Yoo
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
High Energy ◽  
Solid Loading ◽  
Control Group ◽  
Energy Yield ◽  
Tetraselmis Suecica ◽  
Antioxidant Power

Microalgae have been attracting attention as feedstock for biorefinery because they have various advantages, such as carbon fixation, high growth rate and high energy yield. The bioactive compounds and lutein contained in microalgae are known to be beneficial for human health, especially eye and brain health. In this study, in order to improve the recovery of bioactive extracts including lutein from Tetraselmis suecica with higher efficiency, an effective solvent was selected, and the extraction parameters such as temperature, time and solid loading were optimized by response surface methodology. The most effective solvent for lutein recovery was identified as 100% methanol, and the optimum condition was determined (42.4 °C, 4.0 h and 125 g/L biomass loading) by calculation of the multiple regression model. The maximum content of recovered lutein was found to be 2.79 mg/mL, and the ABTS radical scavenging activity (IC50) and ferric reducing antioxidant power (FRAP) value were about 3.36 mg/mL and 561.9 μmol/L, respectively. Finally, the maximum lutein recovery from T. suecica through statistical optimization was estimated to be 22.3 mg/g biomass, which was 3.1-fold improved compared to the control group.

Patients Living With HIV Are Less Likely to Receive Appropriate Statin Therapy for Cardiovascular Disease Risk Reduction

2021 ◽  
pp. 089719002199979
Author(s):  
Roshni P. Emmons ◽  
Nicholas V. Hastain ◽  
Todd A. Miano ◽  
Jason J. Schafer
Keyword(s):  
Cardiovascular Disease ◽  
Logistic Regression ◽  
Statin Therapy ◽  
Risk Reduction ◽  
Blood Cholesterol ◽  
Control Group ◽  
Atherosclerotic Cardiovascular Disease ◽  
Ascvd Risk ◽  
Living With Hiv ◽  
To Receive

Background: Recent studies suggest that statins are underprescribed in patients living with HIV (PLWH) at risk for atherosclerotic cardiovascular disease (ASCVD), but none have assessed if eligible patients receive the correct statin and intensity compared to uninfected controls. Objectives: The primary objective was to determine whether statin-eligible PLWH are less likely to receive appropriate statin therapy compared to patients without HIV. Methods: This retrospective study evaluated statin eligibility and prescribing among patients in both an HIV and internal medicine clinic at an urban, academic medical center from June-September 2018 using the American College of Cardiology/American Heart Association guideline on treating blood cholesterol to reduce ASCVD risk. Patients were assessed for eligibility and actual treatment with appropriate statin therapy. Characteristics of patients appropriately and not appropriately treated were compared with chi-square testing and predictors for receiving appropriate statin therapy were determined with logistic regression. Results: A total of 221/300 study subjects were statin-eligible. Fewer statin-eligible PLWH were receiving the correct statin intensity for their risk benefit group versus the uninfected control group (30.2% vs 67.0%, p < 0.001). In the multivariable logistic regression analysis, PLWH were significantly less likely to receive appropriate statin therapy, while those with polypharmacy were more likely to receive appropriate statin therapy. Conclusion: Our study reveals that PLWH may be at a disadvantage in receiving appropriate statin therapy for ASCVD risk reduction. This is important given the heightened risk for ASCVD in this population, and strategies that address this gap in care should be explored.

scholarly journals Energy Stores, Oxidative Balance, and Sleep in Migratory Garden Warblers (Sylvia borin) and Whitethroats (Sylvia communis) at a Spring Stopover Site

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Andrea Ferretti ◽  
Scott R McWilliams ◽  
Niels C Rattenborg ◽  
Ivan Maggini ◽  
Massimiliano Cardinale ◽  
...  
Keyword(s):  
Food Intake ◽  
High Energy ◽  
Oxidative Status ◽  
Energy Reserves ◽  
Stopover Site ◽  
Garden Warbler ◽  
Oxidative Balance ◽  
Energy Stores ◽  
Sylvia Borin ◽  
Sylvia Communis

Synopsis Little is known about how songbirds modulate sleep during migratory periods. Due to the alternation of nocturnal endurance flights and diurnal refueling stopovers, sleep is likely to be a major constraint for many migratory passerine species. Sleep may help to increase the endogenous antioxidant capacity that counteracts free radicals produced during endurance flight and reduces energy expenditure. Here, we investigated the relationship between sleep behavior, food intake, and two markers of physiological condition—the amount of energy reserves and oxidative status—in two migratory songbird species, the garden warbler (Sylvia borin) and the whitethroat (Sylvia communis). In garden warblers, birds with high energy stores were more prone to sleep during the day, while this condition-dependent sleep pattern was not present in whitethroats. In both species, birds with low energy stores were more likely to sleep with their head tucked in the feathers during nocturnal sleep. Moreover, we found a positive correlation between food intake and the extent of energy reserves in garden warblers, but not in whitethroats. Finally, we did not find significant correlations between oxidative status and sleep, or oxidative status and energy stores. Despite our study was not comparative, it suggests that different species might use different strategies to manage their energy during stopover and, additionally, it raises the possibility that migrants have evolved physiological adaptations to deal with oxidative damage produced during migration.

Yoga as a Preventive Health Care Program for White and Black Elders: An Exploratory Study

1983 ◽  
Vol 17 (3) ◽  
pp. 169-176 ◽  
Author(s):  
David Haber
Keyword(s):  
Blood Pressure ◽  
Low Income ◽  
Blood Pressure Level ◽  
Well Being ◽  
Daily Basis ◽  
Pressure Level ◽  
Control Group ◽  
Daily Routine ◽  
Psychological Well Being ◽  
Black Elders

A ten-week yoga program was implemented with sixty-one white and forty-five low-income black elders at two community sites, along with a pretest-posttest control group research design with random assignment at each site. White elders attended class regularly, practiced yoga on their own on a daily basis, improved psychological well-being, and lowered their systolic blood pressure level, in comparison to a control group. Black elders, on the other hand, attended the once-a-week class regularly but did not practice on their own on a daily basis. Thus, they did not improve psychological well-being nor reduce blood pressure level in comparison to a control group. Social analysts suggest that low-income minority elders need more frequent contact with structured leadership in order to adhere to a daily routine that may lead to psychological and physical change. Other directions for controlled follow-up studies are suggested.

The Effects of Computer Game on Preschool Children’s Nutrition Knowledge and Junk Food Intake Behavior (Preprint)

2021 ◽  
Author(s):  
Chin-En Yen
Keyword(s):  
Food Intake ◽  
Nutrition Education ◽  
Computer Games ◽  
Computer Game ◽  
Nutrition Knowledge ◽  
Control Group ◽  
Junk Food ◽  
Nutritional Knowledge ◽  
Children's Nutrition ◽  
Game Intervention

BACKGROUND Computer games can increase children’s interest in learning, and then improve their nutritional knowledge, and their dietary intake behavior. OBJECTIVE The purpose of this study was to evaluate the short-term effectiveness of computer games on preschool children's nutrition knowledge and junk food intake behavior. This study was a cross-sectional study. METHODS We recruited 104 preschool children age 5-6 years from preschools and randomly assign to experiment group (n=56) and control group (n=48). The researchers used Construct 2 to design and produce the "Healthy Rat King" computer game as a nutrition education tool for children. The computer game courses intervention was one hour per week for four consecutive weeks in experiment group, and the control group did not received computer game intervention. RESULTS The results showed that the nutrition knowledge score of children in experiment group were significant higher than the control group after four weeks of computer game course intervention, and the frequency of chocolate, candies, and ice cream intake was significantly reduced in experiment group after four weeks of computer game intervention. CONCLUSIONS computer game teaching suggested that improved children’s nutrition knowledge and decreased the frequency of junk food intake.

Limits to sustained energy intake

2001 ◽  
Vol 204 (11) ◽  
pp. 1947-1956 ◽  
Author(s):  
M. S. Johnson ◽  
S. C. Thomson ◽  
J. R. Speakman
Keyword(s):  
Food Intake ◽  
Energy Intake ◽  
Litter Size ◽  
Resting Metabolic Rate ◽  
Control Group ◽  
Lower Mass ◽  
Daily Food Intake ◽  
Energy Demands ◽  
Daily Food ◽  
Pregnancy And Lactation

SUMMARYTo determine whether mice were limited in their capacity to absorb energy during late lactation, we attempted to increase the energy burden experienced by a group of female mice during late lactation by mating them at the postpartum oestrus, hence combining the energy demands of pregnancy and lactation. These experimental mice were therefore concurrently pregnant and lactating in their first lactation, and were followed through a normal second lactation. In a control group, females also underwent two lactations but sequentially, with the second mating after the first litter had been weaned. Maternal mass and food intake were measured throughout the first lactation, second pregnancy and second lactation. Maternal resting metabolic rate (RMR) was measured prior to the first mating and then at the peak of both the first and second lactations. Litter size and litter mass were also measured throughout both lactations. In the first lactation, experimental mice had a lower mass-independent RMR (F1,88=5.15, P=0.026) and raised significantly heavier pups (t=2.77, d.f.=32, P=0.0093) than the control mice. Experimental mice delayed implantation at the start of the second pregnancy. The extent of the delay was positively related to litter size during the first lactation (F1,19=4.58, P=0.046) and negatively related to mean pup mass (F1,19=5.78, P=0.027) in the first lactation. In the second lactation, the experimental mice gave birth to more (t=2.75, d.f.=38, P=0.0092) and lighter (t=−5.01, d.f.=38, P&lt;0.0001) pups than did the controls in their second lactation. Maternal asymptotic daily food intake of control mice in the second lactation was significantly higher (t=−4.39, d.f.=37, P=0.0001) than that of the experimental mice and higher than that of controls during their first lactation. Despite the added burden on the experimental females during their first lactation, there was no increase in their food intake, which suggested that they might be limited by their capacity to absorb energy. However, control females appeared to be capable of increasing their asymptotic food intake beyond the supposed limits estimated previously, suggesting that the previously established limit was not a fixed central limitation on food intake. As RMR increased in parallel with the increase in food intake during the second lactation of control mice, the sustained energy intake remained at around 7.0×RMR.

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