Extra-Virgin Olive Oil Improves Depression Symptoms Without Affecting Salivary Cortisol and Brain-Derived Neurotrophic Factor in Patients With Major Depression: A Double-Blind Randomized Controlled Trial.

BACKGROUND: Many patients with depression are reluctant to take psychiatric medications. Hence, complementary therapies such as nutritional considerations could be advantageous. The antidepressant potential of olive oil has been proved in observational studies. OBJECTIVE: The effect of extra-virgin olive oil (EVOO) on depression symptoms and cortisol and brain-derived neurotrophic factor (BDNF) levels in patients with depression was examined. DESIGN AND PARTICIPANTS: This was a double-blind randomized controlled trial conducted on 73 patients suffering from major depressive disorder in Shiraz, Iran, in 2016. INTERVENTION: The patients were randomly assigned to intervention (EVOO) and control (sunflower oil) groups and consumed 25 mL/d of the corresponding oil for 52 days. MAIN OUTCOME MEASURES: Depression symptoms were assessed by Beck Depression Inventory-II (BDI-II) and 7-item Hamilton Depression Rating Scale (HAMD-7). Salivary cortisol levels were determined immediately after awakening and 30 minutes later. Cortisol awakening response and the area under the curve with respect to ground and increase were computed. Serum BDNF concentrations were also measured. STATISTICAL ANALYSES PERFORMED: Statistical analysis was conducted based on intention-to-treat and per-protocol approaches. Within-group changes were examined with repeated measures (for BDI-II and HAMD-7) and with paired t test (for other variables). Between-group comparisons were performed with analysis of covariance after adjustment for confounding factors. RESULTS: In intention-to-treat analysis, HAMD-7 score was the only variable with significant changes within and between groups, the latter as a greater decline in EVOO group (P = .001). BDI-II score did not show significant change in either group but the between-group comparison revealed a significant difference (P = .021). EVOO showed antidepressant effect in severely depressed patients (P = .017 for BDI-II and 0.008 for HAMD-7) but not in mild/moderate depression category. Serum BDNF concentrations, salivary cortisol levels at immediately after awakening (T0) and 30 minutes later, cortisol awakening response, the area under the curve with respect to ground and increase did not change within or between groups. Results of per-protocol analysis were not different. CONCLUSIONS: The results of this study suggested beneficial effects of EVOO on depression symptoms in patients with severe depression but not in those with mild to moderate depression. The effects were significant from both statistical and clinical points of view.

Effect of sunflower seed oil emollient therapy on newborn infant survival in Uttar Pradesh, India: A community-based, cluster randomized, open-label controlled trial.

BACKGROUND: Hospitalized preterm infants with compromised skin barrier function treated topically with sunflower seed oil (SSO) have shown reductions in sepsis and neonatal mortality rate (NMR). Mustard oil and products commonly used in high-mortality settings may possibly harm skin barrier integrity and enhance risk of infection and mortality in newborn infants. We hypothesized that SSO therapy may reduce NMR in such settings. METHODS AND FINDINGS: This was a population-based, cluster randomized, controlled trial in 276 clusters in rural Uttar Pradesh, India. All newborn infants identified through population-based surveillance in the study clusters within 7 days of delivery were enrolled from November 2014 to October 2016. Exclusive, 3 times daily, gentle applications of 10 ml of SSO to newborn infants by families throughout the neonatal period were recommended in intervention clusters (n = 138 clusters); infants in comparison clusters (n = 138 clusters) received usual care, such as massage practice typically with mustard oil. Primary analysis was by intention-to-treat with NMR and post-24-hour NMR as the primary outcomes. Secondary analysis included per-protocol analysis and subgroup analyses for NMR. Regression analysis was adjusted for caste, first-visit weight, delivery attendant, gravidity, maternal age, maternal education, sex of the infant, and multiple births. We enrolled 13,478 (52.2% male, mean weight: 2,575.0 grams ± standard deviation [SD] 521.0) and 13,109 (52.0% male, mean weight: 2,607.0 grams ± SD 509.0) newborn infants in the intervention and comparison clusters, respectively. We found no overall difference in NMR in the intervention versus the comparison clusters [adjusted odds ratio (aOR) 0.96, 95% confidence interval (CI) 0.84 to 1.11, p = 0.61]. Acceptance of SSO in the intervention arm was high at 89.3%, but adherence to exclusive applications of SSO was 30.4%. Per-protocol analysis showed a significant 58% (95% CI 42% to 69%, p < 0.01) reduction in mortality among infants in the intervention group who were treated exclusively with SSO as intended versus infants in the comparison group who received exclusive applications of mustard oil. A significant 52% (95% CI 12% to 74%, p = 0.02) reduction in NMR was observed in the subgroup of infants weighing ≤1,500 g (n = 589); there were no statistically significant differences in other prespecified subgroup comparisons by low birth weight (LBW), birthplace, and wealth. No severe adverse events (SAEs) were attributable to the intervention. The study was limited by inability to mask allocation to study workers or participants and by measurement of emollient use based on caregiver responses and not actual observation. CONCLUSIONS: In this trial, we observed that promotion of SSO therapy universally for all newborn infants was not effective in reducing NMR. However, this result may not necessarily establish equivalence between SSO and mustard oil massage in light of our secondary findings. Mortality reduction in the subgroup of infants ≤1,500 g was consistent with previous hospital-based efficacy studies, potentially extending the applicability of emollient therapy in very low-birth-weight (VLBW) infants along the facility-community continuum. Further research is recommended to develop and evaluate therapeutic regimens and continuum of care delivery strategies for emollient therapy for newborn infants at highest risk of compromised skin barrier function. TRIAL REGISTRATION: ISRCTN Registry ISRCTN38965585 and Clinical Trials Registry-India (CTRI/2014/12/005282) with WHO UTN # U1111-1158-4665.

Suplementação com óleos ricos em ácidos graxos poli-insaturados na dieta de leitões na fase de creche: efeitos no desempenho, na resposta inflamatória, no perfil lipídico e no "status" oxidativo / Supplementation with oils rich in polyunsaturated fatty acids in the diet of pigs in the nursery phase: effects on performance, inflammatory response, lipid profile and oxidative "status"

Nos sistemas de produção, os produtos naturais vêm se destacando na substituição a produtos sintéticos, dentre eles podemos ressaltar os óleos vegetais ricos em ácido graxos poli-insaturados (PUFA), que são conhecidos, popularmente, por seus efeitos benéficos. Dessa forma, o objetivo com este trabalho foi avaliar os efeitos da suplementação dos óleos de pequi (Caryocar brasiliense) e girassol (Helianthus annus) sobre parâmetros fisiológicos em leitões na fase de creche. Foram utilizados 180 leitões alojados em granja comercial, distribuídos em três grupos (n=60) conforme suplementação alimentar: óleo de pequi, óleo de girassol e controle negativo. Amostras de sangue e o peso dos animais foram obtidos nos intervalos de quatro trocas de rações da fase de creche para avaliação do desempenho, da resposta inflamatória, do perfil lipídico e do "status" oxidativo. Os parâmetros fisiológicos mensurados demonstraram que os óleos interferiram positivamente na resposta inflamatória sistêmica, por meio dos leucócitos totais e da relação neutrófilo/linfócito (P<0,05); no equilíbrio oxidante-antioxidante, por mensuração de óxido nítrico e do malondialdeído (P<0,05); e no metabolismo lipídico, com a avaliação de colesterol total e triglicérides (P<0,05). Por outro lado, esses óleos vegetais interferiram no ganho de peso e no consumo de ração (P<0,05). Assim, concluí-se que a suplementação com óleos de pequi e girassol melhora a saúde dos animais, mas tem impacto negativo no desempenho zootécnico de leitões na fase de creche.(AU)

In production systems, natural products have been outstanding in replacing synthetic products, among them, we can highlight the vegetable oils rich in polyunsaturated fatty acids (PUFA) that are popularly known for their beneficial effects. Thus, the objective of this study was to evaluate the effects of pequi (Caryocar brasiliense) and sunflower (Helianthus annus) oil supplementation on nursery physiological parameters. We used 180 piglets housed in a commercial farm, distributed in 3 groups (n=60) according to food supplementation: pequi oil, sunflower oil and negative control. Blood samples and animal weight were obtained at intervals of four nursery phase rations to evaluate performance, inflammatory response, lipid profile and oxidative status. The physiological parameters measured showed that the oils positively interfered in the systemic inflammatory response through total leukocytes and neutrophil / lymphocyte ratio (P<0.05), in the oxidant-antioxidant balance by measuring nitric oxide and malondialdehyde (P<0.05). and lipid metabolism with the assessment of total cholesterol and triglycerides (P<0.05). On the other hand, these vegetable oils interfered with weight gain and feed intake (P<0.05). Thus, it can be concluded that supplementation with pequi and sunflower oils improves animal health, but has a negative impact on the piglet's performance in the nursery phase.(AU)

Skin surface temperature of the mammary gland, measured by infrared thermography, in primiparous Girolando cows fed diets containing different lipid sources.

This research communication describes the influence of diet, mammary quarter position and milking process on the temperature of teats and udder of cows fed diets containing different lipid sources. Five primiparous cows were fed diets containing cottonseed, sunflower seed, soybeans or soybean oil as a source of lipids and a reference diet without the inclusion of lipid sources in a 5 × 5 Latin Square design. Milk yield was determined in the last five days of each period. Milk samples were collected for SCC analysis on the last two days of each experimental period. The images of the mammary gland were obtained using an infrared camera and were analyzed with appropriate computer software. Milk yield was 14.8% higher for cows fed soybeans as a source of lipids. Diets and somatic cell counts did not influence the temperature of teats and udder. The milking process reduced the temperature of teats and udder by 0.79°C. Rear teats and rear quarters had higher surface temperatures than front teats and fore quarters. Changes in temperature of teats and mammary quarters occurred as a function of the milking process and quarter position. However, the diet and the SCC did not influence the temperature of teats and mammary quarters in this experiment.

Reproductive Profile of Etawah Crossbred Does Fed Flushing Diet Containing Different Kinds of Plant Oil and Animal Fat.

BACKGROUND AND OBJECTIVE: Reproduction system is affected by nutrient status of the animal. Flushing is one of reproduction program where the animal should give good quality diet. This study was aimed to evaluate etawah crossbred does reproduction performance giving flushing diet with different fat sources. The fat of plant oils are sunflower and flaxseed and from animal oils are tallow and Lemuru fish. MATERIALS AND METHODS: Twenty four of Etawah crossbred does (average body weight 33.83±3.70 kg) were used in this experiment by using completely randomized block design. There are four treatments with four animals of each treatment. The treatments were flushing diet containing 5% sunflower oil (R1), 5.2% flaxseed oil (R2), 5.3% tallow (R3) and 5% Lemuru fish oil (R4). Treatment was given three weeks before and two weeks after matting, following 2 weeks before partus. During pregnant, the does were given basal diet (ratio concentrate:napier grass was 70:30). Body condition score, nutrient status, blood metabolite and hormone and also performance reproduction were evaluated. RESULTS: The nutrient consumption was same in all treatment. Blood glucose were same in all treatments but the highest blood cholesterol was in R3 during estrus and in R4 during mid gestation. The highest plasma estradiol was in R1 during early gestation, while the highest plasma progesterone was in R2 during late gestation. Litter size and birth weight were same in all treatment, while the highest total embryo was in R2 treatment. CONCLUSION: It is concluded that flaxseed oil for flushing diet was significantly increased number of total embryo.

Preferential Partitioning of Rumen-Protected n-3 and n-6 Fatty Acids into Functionally Different Adipose Tissues.

Lipids are stored at various sites inside the body as adipose tissue (AT). These include subcutaneous, abdominal, and intermuscular locations. The AT substantially differ in their metabolic function. It is, however, unclear whether AT have specific requirements for individual essential n-3 and n-6 fatty acids (FA). If so, control mechanisms would partition FA from the blood. To investigate the hypothesis of a selective FA incorporation, 18 beef heifers were fed diets supplemented with 60 g/kg diet with lipids from either fish oil (FO) or sunflower oil (SO). The lipids had partially been rumen-protected to ruminal biohydrogenation of n-3 and n-6 FA. The AT analyzed for n-3 and n-6 FA by gas chromatography were obtained from pericardial, longissimus thoracis (LT) intermuscular, perirenal, and subcutaneous sites. The greatest proportions of n-3 and n-6 FA were found in the pericardial AT. Despite generally low abundance, n-3 FA proportions increased with FO compared to SO supplementation in all AT, but to a different extent. No such partitioning was found for the n-6 FA when supplementing SO. Concomitantly, the n-6/n-3 FA ratio was reduced with FO in all AT, except in the pericardial AT. The latter has specific metabolic functions and thus appears to be quite resistant to diet-induced changes in FA profile in order to maintain its function. The present findings showed the special role of specific n-3 and n-6 FA in bovine AT.

[RENOPROTECTIVE EFFECT OF THE BIOTRIT MUCOSO-ADHESIVE PHYTOGEL IN RATS, RECEIVING ORAL APPLICATIONS OF OXIDIZED SUNFLOWER OIL].

Oral applications of peroxidised sunflower oil (PSO) cause development of nephropathy, which can be prevented with the help of oral applications of the Biotrit phytogel containing bioflavonoids from wheat seedlings. The purpose of this work was to determine the renoprotective effect of the Biotrit phytogel under the influence of PSO on rats. The experiments were carried out on 18 white Wistar rats (females, 4-5 months, 210±12 g), divided into 3 equal groups: the first - control, received compound feed. The 2nd and 3rd groups received the same diet; however, they additionally undergo oral applications of PSO at a dose of 0.5 ml per rat daily for 5 days. Rats of the 3rd group 30 minutes before the application of PSO received application of the "Biotrit" gel in a dose of 0.5 ml per rat for 5 days. After euthanasia of animals, kidneys were removed on the 6th day and the level of biochemical markers of inflammation and the content of malonic dialdehyde (MDA), urease and lysozyme were determined in the homogenate of the latter. Under the action of PSO both indicators significantly increase: elastase activity by 20%, and MDA content by 50%. Oral applications of the "Biotrit" gel reduce both indicators of inflammation. Catalase activity does not change both with the introduction of PSO and after application of the Biotrit gel. In rats treated with PSO, urease activity in the kidneys significantly increases, indicating an increase in bacterial contamination, which decreases under the influence of oral applications of the Biotrit gel. The consumption of peroxidised fats causes the development of nephropathy in experimental animals. To prevent the development of peroxide nephropathy, one can use oral applications of "Biotrit" phytogel.

Dietary Fat Does Not Overcome trans-10, cis-12 Conjugated Linoleic Acid Inhibition of Milk Fat Synthesis in Lactating mice.

Trans-10, cis-12 conjugated linoleic acid (CLA) is a potent inhibitor of milk fat synthesis in the cow and similarly reduces milk fat in rodents. The objective of this study was to determine whether dietary fat can overcome CLA inhibition of milk fat concentration in lactating mice. Wild type C57Bl/6J mice (n = 31) were fed semipurified diets containing either low fat (LF; 4% fat) or high fat (HF; 23.6% fat) starting 4-6 days postpartum. Dietary fat was increased by inclusion of high oleic sunflower oil. After 2 days on the experimental diets, lactating dams were orally dosed with either water (control) or trans-10, cis-12 CLA (20 mg/day) for 5 days. CLA treatment decreased pup growth similarly in both HF and LF diets. Milk fat percent was increased over 16% by the HF diet and decreased over 12% by CLA, but there was no interaction of dietary fat and CLA. Both CLA and the HF diet reduced the proportion of short- and medium-chain fatty acids that originate from de novo synthesis, and there was no interaction of diet and CLA. CLA had no effect on the percent of preformed fatty acids, but the HF diet increased their abundance. Dietary fat and CLA both modified mammary expression of lipogenic enzymes and regulators, but no interactions were observed. In conclusion, CLA reduced milk fat concentration and litter growth, but these effects were not overcome by increased dietary fat from high oleic sunflower oil. CLA inhibition of milk fat in the mammary gland is not substrate dependent, and the mechanism is independent from dietary supply of oleic acid.

Effect of α-linolenic acid on vascular function and metabolic risk markers during the fasting and postprandial phase: A randomized placebo-controlled trial in untreated (pre-)hypertensive individuals.

BACKGROUND: Only a limited number of studies have examined the vascular and postprandial effects of α-linolenic acid (ALA, C18:3n-3). Therefore, we performed a well-controlled trial focusing specifically on the effects of ALA on vascular function and metabolic risk markers during the fasting and postprandial phase in untreated (pre-)hypertensive individuals. METHODS: In a double-blind randomized, placebo-controlled parallel study, 59 overweight and obese adults (40 men and 19 women, aged 60 ± 8 years) with a high-normal blood pressure or mild (stage I) hypertension consumed daily either 10 g of refined cold-pressed flaxseed oil, providing 4.7 g ALA (n = 29), or 10 g of high-oleic sunflower (control) oil (n = 30) for 12 weeks. RESULTS: As compared with the high-oleic oil control, intake of flaxseed oil did not change brachial artery flow-mediated vasodilation, carotid-to-femoral pulse wave velocity, retinal microvascular calibers and plasma markers of microvascular endothelial function during the fasting and postprandial phase. Fasting plasma concentrations of free fatty acid (FFA) and TNF-α decreased by 58 µmol/L (P = 0.02) and 0.14 pg/mL (P = 0.03), respectively. No differences were found in other fasting markers of lipid and glucose metabolism, and low-grade systemic inflammation. In addition, dietary ALA did not affect postprandial changes in glucose, insulin, triacylglycerol, FFA and plasma inflammatory markers after meal intake. CONCLUSION: A high intake of ALA, about 3-5 times the recommended daily intake, for 12 weeks decreased fasting FFA and TNF-α plasma concentrations. No effects were found on other metabolic risk markers and vascular function during the fasting and postprandial phase in untreated high-normal and stage I hypertensive individuals.

Heart Histopathology and Mitochondrial Ultrastructure in Aged Rats Fed for 24 Months on Different Unsaturated Fats (Virgin Olive Oil, Sunflower Oil or Fish Oil) and Affected by Different Longevity.

Diet plays a decisive role in heart physiology, with lipids having especial importance in pathology prevention and development. This study aimed to investigate how dietary lipids varying in lipid profile (virgin olive oil, sunflower oil or fish oil) affected the heart of rats during aging. Heart histopathology, mitochondrial morphometry, and oxidative status were assessed. Typical histopathological features associated with aging, such as valvular lesions, endomyocardical hyperplasia, or papillary muscle calcification, were found at a low extent in all the experimental groups. The most relevant finding was that inflammation registered by fish oil group was lower compared to the other treatments. At the ultrastructural level, heart mitochondrial area, perimeter, and aspect ratio were higher in fish oil-fed rats than in those fed on sunflower oil. Concerning oxidative stress markers, there were differences only in coenzyme Q levels and catalase activity, lower in sunflower oil-fed animals compared with those fed on fish oil. In summary, dietary intake for a long period on dietary fats with different fatty acids profile led to differences in some aspects associated with the aging process at the heart. Fish oil seems to be the fat most protective of heart during aging.

Increasing Selenium and Vitamin E in Dairy Cow Milk Improves the Quality of the Milk as Food for Children.

In this study, we investigated the beneficial effects of milk biofortified with antioxidants on the health of children. Two experiments were conducted: experiment one evaluated the milk of 24 Jersey dairy cows (450 ± 25 kg of body weight (BW); 60 ± 30 days in milk dry matter intake (DIM)) given different diet treatments (CON = control diet; COANT = diet with vitamin E and selenium as antioxidants; OIL = diet with sunflower oil; and OANT = diet with sunflower oil containing more vitamin E and selenium as antioxidants), and experiment two evaluated the effect of the milk produced in the first experiment on the health of children (CON = control diet; COANT = diet with vitamin E and selenium as antioxidants; OIL = diet with sunflower oil; OANT = diet with sunflower oil containing more vitamin E and selenium as antioxidants; and SM = skim milk). One hundred children (8 to 10 years old) were evaluated in the second experiment. Blood samples were collected at 0 days of milk intake and 28 and 84 days after the start of milk intake. The cows fed the COANT and OANT diets showed greater selenium and vitamin E concentrations in their milk (p = 0.001), and the children who consumed the milk from those cows had higher concentrations of selenium and vitamin E in their blood (p = 0.001). The platelet (p = 0.001) and lymphocyte (p = 0.001) concentrations were increased in the blood of the children that consumed milk from cows fed the OANT diet compared to those in the children that consumed SM (p = 0.001). The children who consumed milk from cows fed the OIL diet treatment had increased concentrations of low density lipoprotein (LDL) and total cholesterol in their blood at the end of the supplementation period compared to children who consumed SM. The results of this study demonstrate that the consumption of biofortified milk increases the blood concentrations of selenium and vitamin E in children, which may be beneficial to their health.

Cost-effectiveness of sunflower oil fortification with vitamin A in Tanzania by scale.

In 2011, Tanzania mandated the fortification of edible oil with vitamin A to help address its vitamin A deficiency (VAD) public health problem. By 2015, only 16% of edible oil met the standards for adequate fortification. There is no evidence on the cost-effectiveness of the fortification of edible oil by small- and medium-scale (SMS) producers in preventing VAD. The MASAVA project initiated the production of sunflower oil fortified with vitamin A by SMS producers in the Manyara and Shinyanga regions of Tanzania. A quasi-experimental nonequivalent control-group research trial and an economic evaluation were conducted. The household survey included mother and child pairs from a sample of 568 households before the intervention and 18 months later. From the social perspective, the incremental cost of fortification of sunflower oil could be as low as $0.13, $0.06, and $0.02 per litre for small-, medium-, and large-scale producers, respectively, compared with unfortified sunflower oil. The SMS intervention increased access to fortified oil for some vulnerable groups but did not have a significant effect on the prevention of VAD due to insufficient coverage. Fortification of vegetable oil by large-scale producers was associated with a significant reduction of VAD in children from Shinyanga. The estimated cost per disability-adjusted life year averted for fortified sunflower oil was $281 for large-scale and could be as low as $626 for medium-scale and $1,507 for small-scale producers under ideal conditions. According to the World Health Organization thresholds, this intervention is very cost-effective for large- and medium-scale producers and cost-effective for small-scale producers.

Inclusion of Sunflower Oil in the Bovine Diet Improves Milk Nutritional Profile.

Milk and its derivatives are important foods that contribute to daily nutrient requirements and improve consumers' health. This study evaluated the effects of supplementing the diet of lactating dairy cows with sunflower oil (SFO), selenium, and vitamin E on the milk's fatty acid profile and fat oxidative stability as well as the acceptability of the milk by consumers. For this purpose, 32 Jersey dairy cows were allocated to four treatment groups for 60 days, as follows: C (control diet); A (3.5 mg/kg DM (dry matter) organic selenium + 2000 IU vitamin E/cow per day); O (4% SFO DM); OA (equal doses of A and O treatments). The inclusion of SFO decreased the contents of 10:0, 10:1, 11:0, 12:0, 12:1, 14:0, and 9c-14:1 fatty acids as well as odd- and branched-chain fatty acids (13:0, iso 13:0, anteiso 13:0, 15:0, iso 15:0, and 17:0). There was also a tendency for 8:0 and 16:0 fatty acid concentrations to decrease when SFO was included in the cows´ diet. SFO decreased the concentration of 10:0 to 15:0 fatty acids in milk. The sum of the conjugated linoleic acids (CLAs), conjugated alpha-linolenic acid intermediates (CLnAs; 18:3 ω6 + 18:3 ω3), and 22:0 fatty acids in milk tended to increase, and there were significant increases in 18:0 and 9c11t-18:2 with SFO. In terms of the effects of SFO on the health-related lipid indices, the atherogenicity index tended to decrease and h/H tended to increase. When cows were supplemented with antioxidants, the concentration of 20:2 fatty acids decreased, the 6 + 7 + 8 + 9t-18:1, 16t-18:1, 20:0, 22:2, and 24:0 fatty acid concentrations increased, and there was a trend for the 22:1 ω9 fatty acid concentration to increase with antioxidants plus oil. There was a tendency for ω6 fatty acids and ω6/ω3 to increase with milk treated with antioxidants plus oil. The oxidative stability of milk was not influenced by the presence of SFO or antioxidants in the diet of dairy cows. Consumers desired the color and mouthfeel of the milk that was treated with SFO. Cows fed with 4% sunflower oil produced milk with an improved fatty acid profile for human nutrition, containing a higher CLA content and an improved ratio of hypocholesterolemic and hypercholesterolemic fatty acids, without increasing the milk's susceptibility to oxidation. The milk was also rated as being more acceptable by consumers.

Omega-3 fatty acid supplementation attenuates skeletal muscle disuse atrophy during two weeks of unilateral leg immobilization in healthy young women.

Omega-3 (n-3) fatty acid supplementation enhances muscle protein synthesis and muscle size. Whether n-3 fatty acid supplementation attenuates human muscle disuse atrophy is unknown. We determined the influence of n-3 fatty acid supplementation on muscle size, mass, and integrated rates of myofibrillar protein synthesis (MyoPS) following 2 wk of muscle disuse and recovery in women. Twenty women (BMI = 23.0 ± 2.3 kg/m2, age = 22 ± 3 yr) underwent 2 wk of unilateral limb immobilization followed by 2 wk of return to normal activity. Starting 4 wk prior to immobilization, participants consumed either 5 g/d of n-3 fatty acid or an isoenergetic quantity of sunflower oil (control). Muscle size and mass were measured pre- and postimmobilization, and after recovery. Serial muscle biopsies were obtained to measure integrated (daily) MyoPS. Following immobilization, the decline in muscle volume was greater in the control group compared to the n-3 fatty acid group (14 vs. 8%, P < 0.05) and was not different from preimmobilization at recovery in the n-3 fatty acid group; however, it was still lower in the control group ( P < 0.05). Muscle mass was reduced in the control group only ( P < 0.05). MyoPS was higher in the n-3 group compared with the control group at all times ( P < 0.05). We conclude that n-3 fatty acid supplementation attenuates skeletal muscle disuse atrophy in young women, which may be mediated by higher rates of MyoPS.-McGlory, C., Gorissen, S. H. M., Kamal, M., Bahniwal, R., Hector, A. J., Baker, S. K., Chabowski, A., Phillips, S. M. Omega-3 fatty acid supplementation attenuates skeletal muscle disuse atrophy during two weeks of unilateral leg immobilization in healthy young women.

Estudo piloto da análise comparativa da atividade antimicrobiana da PDT e agentes irrigantes em canais radiculares inoculados com Enterococcus faecalis "in vitro" / A pilot study of the comparative analysis of the antimicrobial activity of PDT and irrigating agents in root canals inoculated with Enterococcus faecalis "in vitro"

Objetivo:O presente estudo piloto "in vitro" avaliou o efeito antimicrobiano do hipoclorito de sódio, clorexidina, terapia fotodinâmica e do óleo de girassol ozonizado utilizados como agentes irrigantes na eliminação do Enterococcus faecalis em canais radiculares de dentes humanos extraídos.Métodos:Sessenta raízes de dentes unirradiculares (n = 60) foram selecionadas e autoclavadas para realização do experimento em fluxo laminar. Para a realização do teste de infiltração, confeccionou-se um dispositivo para cada denteque permitiu a contaminação por Enterococcus faecalis e posterior preparo químico-mecânico. As amostras foram submetidas ao preparo biomecânico com diâmetro cirúrgico correspondente à lima #45 e mesma conicidade nos terços médio e cervical e receberam protocolo de desinfecção com hipoclorito de sódio a 2,5% (NaOCl), Clorexidina a 2% (CHX), óleo de girassol ozonizado a 2400ppm (OGO), PDT após irrigação com soro fisiológico (PDT+S) e PDT após irrigação com hipoclorito de sódio a 2,5% (PDT+H). As dez raízes restantes constituíram os controles positivo e negativo, sendo cinco dentes para cada grupo. Os controles positivos foram infectados e não foi utilizado nenhum agente irrigante. Os controles negativos foram compostos por dentes não contaminados pelo E. faecallis. Resultados: Os resultados da contagem de UFC/mL total e análise descritiva foram realizados. NaOCl e PDT+H apresentaram crescimento bacteriano inferiores aos valores de referência e foi considerado nulo. CHX e PDT+S apresentaram crescimento bacteriano baixo e OGO apresentou crescimento bacteriano moderado. Conclusão: NaOCl e PDT+H apresentaram melhor desempenho em relação aos demais protocolos de desinfecção utilizados. OGO apresentou crescimento bacteriano moderado sugerindo inviabilidade de sua utilização isolada em protocolos de desinfecção em endodontia. (AU)

Aim: The present "in vitro" pilot study evaluated the antimicrobial effects of sodium hypochlorite, chlorhexidine, photodynamic therapy, and ozonated sunflower oil, which were used as irrigating agents in the elimination of Enterococcus faecalis in the root canals of extracted human teeth. Methods: Sixty roots of single-root teeth (n = 60) were selected and autoclaved to perform the laminar flow experiment. To perform the infiltration test, a device was constructed for each tooth, which allowed for contamination by Enterococcus faecalis, and the tooth's subsequent chemical-mechanical preparation. The samples were submitted to biomechanical preparation with surgical diameter, corresponding to file #45 and the same taper in the middle and cervical thirds, and received a disinfection protocol with 2.5% sodium hypochlorite (NaOCl), chlorhexidine 2% (CHX), ozonized sunflower oil at 2400ppm (OGO), PDT after irrigation with saline solution (PDT+S), and PDT after irrigation with 2.5% sodium hypochlorite (PDT + H). The remaining ten roots were positive and negative controls, with five teeth in each group. Positive controls were infected, and no irrigating agent was used. Negative controls consisted of teeth that were not contaminated by E. faecallis. Results: The results of the total CFU count and descriptive analysis were performed. NaOCl and PDT+H presented a bacterial growth of much lower t than the reference values and was considered null. CHX and PDT+S presented low bacterial growth, while OGO presented moderate bacterial growth. Conclusion: NaOCl and PDT + H presented better performance in relation to the other disinfection protocols used in this study. OGO presented moderate bacterial growth, suggesting its unviable use in endodontic disinfection protocols. (AU)

Comparative study of the bioaccessibility of the colorless carotenoids phytoene and phytofluene in powders and pulps of tomato: microstructural analysis and effect of addition of sunflower oil.

The objective was to assess the potential bioavailability of phytoene (PT) and phytofluene (PTF) from tomato powders used as raw materials for supplements as compared to the pulp of a common tomato and a cherry tomato. PT and PTF are attracting much interest nowadays as they can provide health and cosmetic benefits. PT and PTF levels in the more concentrated powder were up to 1000 times higher than in the tomatoes. The bioaccessibility from the powders was lower as compared to the tomato fruits and increased markedly when sunflower oil was added. However, the best source of potentially absorbable PT and PTF (0.5 and 2 mg g-1 respectively) was by far the powder with higher levels of them. This result could be due to the higher carotenoid concentration in the powder, the reduction of the particle sizes, and the rupture of cell structures compared to the pulps.

Rapid embryonic accretion of docosahexaenoic acid (DHA) in the brain of an altricial bird with an aquatic-based maternal diet.

Docosahexaenoic acid (DHA) is an important and abundant fatty acid moiety in vertebrate brains. We measured brain phospholipid composition during development in red-winged blackbirds (Agelaius phoeniceus), an altricial species that breeds in aquatic habitats. We also manipulated diet by feeding nestlings fish oil or sunflower oil. Finally, we assessed selective uptake of yolk by comparing the yolk fatty acid composition of freshly laid eggs and day-old hatchlings. Relative to other altricial species, blackbirds achieved high DHA in brain phospholipids (20% of phospholipid fatty acids in day-old hatchlings). This was not a result of selective uptake from the yolk, but rather a consequence of a high proportion of DHA in the yolk (2.5% of total lipids) at laying. Our dietary study confirmed that nestling brains are sensitive to fatty acid supply. Red-winged blackbirds may be able to advance cognitive development relative to other altricial species owing to their aquatic maternal diet.

Comparison of the Incorporation of DHA in Circulatory and Neural Tissue When Provided as Triacylglycerol (TAG), Monoacylglycerol (MAG) or Phospholipids (PL) Provides New Insight into Fatty Acid Bioavailability.

Phospholipids (PL) or partial acylglycerols such as sn-1(3)-monoacylglycerol (MAG) are potent dietary carriers of long-chain polyunsaturated fatty acids (LC-PUFA) and have been reported to provide superior bioavailability when compared to conventional triacylglycerol (TAG). The main objective of the present study was to compare the incorporation of docosahexaenoic acid (DHA) in plasma, erythrocytes, retina and brain tissues in adult rats when provided as PL (PL-DHA) and MAG (MAG-DHA). Conventional dietary DHA oil containing TAG (TAG-DHA) as well as control chow diet were used to evaluate the potency of the two alternative DHA carriers over a 60-day feeding period. Fatty acid profiles were determined in erythrocytes and plasma lipids at time 0, 7, 14, 28, 35 and 49 days of the experimental period and in retina, cortex, hypothalamus, and hippocampus at 60 days. The assessment of the longitudinal evolution of DHA in erythrocyte and plasma lipids suggest that PL-DHA and MAG-DHA are efficient carriers of dietary DHA when compared to conventional DHA oil (TAG-DHA). Under these experimental conditions, both PL-DHA and MAG-DHA led to higher incorporations of DHA erythrocytes lipids compared to TAG-DHA group. After 60 days of supplementation, statistically significant increase in DHA level incorporated in neural tissues analyzed were observed in the DHA groups compared with the control. The mechanism explaining hypothetically the difference observed in circulatory lipids is discussed.

Oral administration of lipid oil-in-water emulsions performed with synthetic or protein-type emulsifiers differentially affects post-prandial triacylglycerolemia in rats.

In this study, we compared the impact of administration of size-calibrated lipid emulsions prepared with either synthetic or natural emulsifiers on the post-absorptive plasma triacylglycerol responses in rats. We did this using four types of size-calibrated (10 µm diameter) and metastable (3 days) emulsions with 20% of an oleic acid-rich sunflower oil and 1% of either synthetic emulsifiers (Tween 80 or sodium 2-stearoyl-lactylate) or two proteins (ß-lactoglobulin or sodium caseinate). An oral fat tolerance test was performed in fasted rats by oral administration of each of these formulations in continuous or emulsified forms. Kinetic parameters (AUC0-inf., AUC0-6h, Cmax, Tmax, and T1/2) for the description of the plasma triacylglycerol responses were calculated. AUC0-6h and AUC0-inf. calculated for the protein groups were significantly lower than those of the control and the synthetic groups. These lower values were associated with significant decreases in the Cmax, exacerbated by the emulsion form and with marked decreases in the Tmax as compared to the control group. T1/2 values were differentially affected by the lipid administration forms and by the nature of the emulsifiers. As compared with the control group, T1/2 was largely increased in the sodium stearoyl-2-lactylate group, but on the contrary, largely lowered in the casein group. We concluded that the use of proteins as natural emulsifiers in lipid emulsions decreased the magnitude of post-prandial triacylglycerolemia for the same amount of ingested lipids, when the emulsion size is controlled for. Proteins could be a promising alternative to the widespread use of synthetic emulsifiers in the food industry.

Effect of diet and packaging system on the oxidative status and polyunsaturated fatty acid content of rabbit meat during retail display.

The aim of this study was to evaluate the combined effect of two dietary lipid sources (sunflower vs. linseed oil) and three packaging methods (PVC film - BAG vs. modified atmosphere CO2 20% + 80% O2 - MAP vs. and vacuum - VAC) on the oxidative status and polyunsaturated fatty acid content of rabbit loins (Longissimus thoracis et lumborum muscle), at days 1, 4 and 10 of simulated retail display. The diet, storage time and packaging method affected the oxidative status of rabbit meat under retail display. As expected, storage time, independently on the other factors, significantly reduced the antioxidant content of loin meat. Accordingly, TBARs values significantly increased during storage, as well as the dietary supplementation of linseed. The fatty acid profile of the fresh loin closely respected that of the diets. At day 10, oxidative status and fatty acid profile of MAP samples could be yet considered optimal.