scholarly journals Chronic photoperiodic manipulation induced chronodisruption upregulates HSP60 during early pro-atherogenic remodeling in thoracic aorta of C57BL/6J mice

2021 ◽  
Vol 82 (1) ◽  
Author(s):  
Kavita Shirsath ◽  
Apeksha Joshi ◽  
Aliasgar Vohra ◽  
Ranjitsinh Devkar

Abstract Background Circadian disruption is often associated with aggravation of atherosclerosis; however, the pathophysiological mechanisms underlying atherogenic initiation in normolipidemic diet remains unclear. Most of the studies done for understanding circadian disruption induced atherosclerosis have been carried out in murine model of hyperlipidemia induced atherosclerosis. The present study investigates pro-atherogenic events in response to chronic photoperiodic manipulation induced chronodisruption (PMCD) in C57BL/6J mice fed with laboratory chow diet. Results The results were compared with atherogenic initiation induced by high fat high fructose (HFHF) diet. The combined effects of HFHF and PMCD on atherogenic initiation were also investigated for possible synergy of both variants. The HFHF and HFHF+PMCD groups recorded increments in body weight gains and serum lipid parameters (TC, TG, LDL-cholesterol, VLDL) and a decrement in HDL-cholesterol as compared to the control group. However, PMCD group recorded body weight gain similar to that of the control group, but the serum lipid parameters (TG and VLDL) were significantly elevated and the HDL levels were lowered. However, prominent hypertrophic remodeling, higher collagen deposition, and elastin derangement, along with endothelial dysfunction, its activation, and macrophage infiltration, were observed in thoracic aorta of all the three experimental groups. But the mRNA and immunoblots of heat shock protein 60 (HSP60) in thoracic aorta was found to be maximum in PMCD followed by HFHF and HFHF+PMCD groups. Conclusion Laboratory chow feeding coupled with photoperiodic manipulation mediated chronodisruption overexpress HSP60 that in turn plays a central role in PMCD mediated pro-atherogenic remodeling in thoracic aorta of C57BL/6J mice.

2004 ◽  
Vol 23 (1) ◽  
pp. 69-73
Author(s):  
Jovica Jovanovic ◽  
Milan Jovanovic

Industrial noise can damage the hearing organ, cardiovascular, endocrine, gastrointestinal, peripheral and central nervous system of exposed workers. The atherogenic risk at workers professionally exposed to noise was assessed by measuring total cholesterol, triglycerides, HDL cholesterol, LDL cholesterol and calculating the ratio: T-C/HDL-C and LDL-C/HDL-C. The exposed group consisted of 150 workers professionally exposed to noise intensity of 70?110 dB. The results were compared to a control group of 80 workers working in relatively silent environment. Serum lipid parameters were examined by standard methods. All lipid parameters in exposed group were statistically different compared to the control group. All calculated atherogenic ratios were higher for workers in exposed group than the control group. Atherogenic risk raises by the length of exposition to the noise and by the intensity of noise. The most atherogenic risk is presented at workers exposed to noise over the 90 dB intensity.


2014 ◽  
Vol 84 (1-2) ◽  
pp. 5-11 ◽  
Author(s):  
Eun Y. Jung ◽  
Sung C. Jun ◽  
Un J. Chang ◽  
Hyung J. Suh

Previously, we have found that the addition of L-ascorbic acid to chitosan enhanced the reduction in body weight gain in guinea pigs fed a high-fat diet. We hypothesized that the addition of L-ascorbic acid to chitosan would accelerate the reduction of body weight in humans, similar to the animal model. Overweight subjects administered chitosan with or without L-ascorbic acid for 8 weeks, were assigned to three groups: Control group (N = 26, placebo, vehicle only), Chito group (N = 27, 3 g/day chitosan), and Chito-vita group (N = 27, 3 g/day chitosan plus 2 g/day L-ascorbic acid). The body weights and body mass index (BMI) of the Chito and Chito-vita groups decreased significantly (p < 0.05) compared to the Control group. The BMI of the Chito-vita group decreased significantly compared to the Chito group (Chito: -1.0 kg/m2 vs. Chito-vita: -1.6 kg/m2, p < 0.05). The results showed that the chitosan enhanced reduction of body weight and BMI was accentuated by the addition of L-ascorbic acid. The fat mass, percentage body fat, body circumference, and skinfold thickness in the Chito and Chito-vita groups decreased more than the Control group; however, these parameters were not significantly different between the three groups. Chitosan combined with L-ascorbic acid may be useful for controlling body weight.


1996 ◽  
Vol 271 (1) ◽  
pp. R48-R54 ◽  
Author(s):  
K. Ackroff ◽  
A. Sclafani

Orlistat (Ols), a potent inhibitor of pancreatic lipase, was added to the fat source (1 or 4 mg Ols/g fat) of a macronutrient self-selection diet fed to adult female rats. The rats responded to the drug-induced reduction in fat absorption by decreasing their dietary fat intake and increasing their protein and carbohydrate intake in a dose-related manner. Total caloric intake also increased, but body weight gain was inhibited compared with the nondrug control group. When Ols was removed from the diet, nutrient selection, caloric intake, and body weight returned to control levels. In additional short-term experiments (30 min/day), rats developed a preference for a plain fat diet over an Ols-fat diet (4 mg/g fat) and also for a cue flavor paired with plain fat over a flavor paired with Ols-fat. Yet, when not given the choice, the rats consumed nearly as much Ols-fat as plain fat diet. These results indicate that, by reducing fat absorption, Ols reduced the attractiveness of dietary fat, although it did not make the fat diet aversive. In clinical use, lipase inhibitors may be effective in reducing dietary fat intake by reducing both the consumption and absorption of fat.


2013 ◽  
Vol 49 (1) ◽  
pp. 135-148 ◽  
Author(s):  
Fernando Márlisson de Queiroz ◽  
Kayo Wanderson de Oliveira Matias ◽  
Mylena Mylana Freire da Cunha ◽  
Aline Schwarz

Phyllanthus niruri L. (Euphorbiaceae), known as "quebra-pedra" (Portuguese for "stonebreaker"), is an herb used for kidney disorders. In light of its frequent use by the population, the present study aimed to investigate the genotoxic, antigenotoxic and cytotoxic activities of a standardized P. niruri extract in bone marrow rats. Three groups of 12 animals were treated daily by gavage over a period of 30 days, with 50, 150 or 250 mg/kg of P. niruri extract aqueous solution. The control group (n = 12) received tap water. At the end of treatment (day 31), groups were divided into two minor subgroups (n=6/group) and received cyclophosphamide (50 mg/kg, i.p.) or saline 0.9% (i.p.). After 24 hours, we evaluated the frequency of micronucleated polychromatic erythrocytes for each animal (MNPCE) at 1000 PCE. Cytotoxicity was evaluated with the PCE/NCE ratio (NEC = normochromatic erythrocytes). General toxicity was assessed during treatment using the parameters of body weight gain, ration and water consumption. The dry extract did not provoke changes in body weight, weight gain, ration and water intake or changes in the frequency of MNPCE or cytotoxicity in bone marrow. We propose that the P. niruri extract used here showed no genotoxic, antigenotoxic and cytotoxic activities under the experimental conditions.


2012 ◽  
Vol 27 (8) ◽  
pp. 537-543 ◽  
Author(s):  
Lívia Hipólito Cardozo Brant ◽  
Ludmila Ferreira Medeiros de França Cardozo ◽  
Luís Guillermo Coca Velarde ◽  
Gilson Teles Boaventura

PURPOSE: To evaluate whether the prolonged consumption of flaxseed minimize the factors that trigger MS in healthy rats. METHODS: Pregnant rats were divided immediately after delivery into two groups during the lactation period, a control group (CG) receiving casein-based diet with 17% of protein, and a Flaxseed group (FG) with casein-based diet plus 25% of flaxseed. At weaning, 12 offspring of each group continued to receive the same feed but with 10% of protein up to 200 days old. RESULTS: FG showed a significant reduction in body weight (p=0.001), total cholesterol levels (p<0.0001), triglycerides (p=0.0001), and glucose (p=0.001). CONCLUSION: The flaxseed alters the indicators related to development of metabolic syndrome, because it has beneficial effects on lipids and glucose profiles and prevents the excess of body weight gain.


2020 ◽  
Vol 17 (35) ◽  
pp. 800-812
Author(s):  
Ilgiz DOLININ ◽  
George BAZEKIN ◽  
Evgeny SKOVORODIN ◽  
Almaz SHARIPOV ◽  
Ivan CHUDOV

Poultry farming holds a special place in ensuring the products that the consumers demand, it provides the population with essential food products,such as eggs and meat,that contain vital micro and macronutrients, proteins, lipids, and vitamins. Therefore, the issues of rational, economically feasible feeding of meat poultry, namely broiler chickens, are an urgent task. It is also essential to find effective methods of their application in order to correct the natural resistance and immune and biological reactivity of birds. The purpose of this research is to study the effect of the biological stimulant-Nucleostim on the growth and development of chickens, hematological, and immunological parameters of the blood of birds.This Biostimulant is a purified bovine spleen extract containing at least 1 mg / ml of low molecular weight peptides (nucleotides and nucleosides) formed as a result of autolysis, using dry whey and diatomite as fillers. Onthe application ofNucleostim, the gain in live weight of chickens was increased by 9.7%. At the end of the experiment, the livability of the chicks of the experimental group treated with Nucleostimcame up to 88%, compared with the 72% of the control group. The use of biostimulant had a stimulating effect on the liver of chickens confirmed by the research results presented in the article, as well as contributed to the development of the thymus in the setting of general dystrophy. Thus, it improved chicklivability and increased body weight gain. The biological stimulant-Nucleostim as an adaptogenic, anabolic, and immunostimulatory agent is promising for finding new drugs that improve the health and productivity of poultry.


2021 ◽  
Vol 141 (5) ◽  
pp. 10-18
Author(s):  
Pham Thuy Phuong ◽  
Pham Quoc Binh ◽  
Dinh Thi Hong Minh ◽  
Tran Thi Thu Hien ◽  
Nguyen Trong Thong ◽  
...  

Dyslipidemia is a major risk factor for cardiovascular disease. Polyherbal formulation is a traditional therapeutic strategy used to treat dyslipidemia over many years of tradition. The aim of this study was designed to evaluate the effects of Hamo NK hard capsule on endogenous dyslipidemia and exogenous dyslipidemia experimental animal model. In endogenous hyperlipidemia model, mice were previously treated by Hamo NK hard capsule, and intraperitoneally injected by poloxamer - 407 to induce hyperlipidemia. Rats were oral administration of oil - cholesterol mixture and Hamo NK for 4 consecutive weeks (exogenous dyslipidemia). Parameters of serum lipid were determined. Hamo NK ameliorated the elevation of serum total cholesterol, Non - HDL - cholesterol at the daily dose of 1.5g/kg b.w (p < 0.05). Also, there was no signicant difference in increase on high - density lipoprotein cholesterol levels and decrease triglyceride levels between the groups. Hamo NK at two doses of 0.25g/kg b.w and 0.75g/kg b.w significantly reduced serum LDL - C levels compared to the cholesterol control group. Hamo NK hard capsule affected on serum lipid modulations in dyslipidemia models.


2017 ◽  
Vol 19 (77) ◽  
pp. 63-66
Author(s):  
A.V. Sanin ◽  
A.V. Deyeva ◽  
A.N. Narovlyansky ◽  
A.V. Pronin ◽  
V.V. Behalo

Among the most important issues of food safety, which conducted an extensive international discussion, is the use in livestock of drugs, such as recombinant bovine growth hormone, or somatotropin, and, in particular, ractopamine, stimulating the growth of cattle, pigs and poultry. Ractopamine is used in veterinary medicine to increase the meatiness of the carcass. Ractopamine improves feed conversion, reduces body fat through lipolysis and an intense muscle-building. In the United States, Australia, Argentina, Brazil, Canada and many other countries, ractopamine is allowed for usage as growth stimulator in livestock. However, in most countries of the European Union the use of ractopamine is forbidden. In this regard, it seems very important to develop effective and safe drugs that can stimulate the production of endogenous somatotropic hormone (STH). We propose to use for this purpose Gamavit – well-studied veterinary medicine stimulating metabolism and widely used by veterinary specialists in the Russian Federation, Ukraine, Belarus and some other countries. The aim of this work was to study the effect of Gamavit on STH production in suckling piglets and lambs. Previously it was shown elsewhere that Gamavit induced 2-fold increase in the STH blood level in calves. The experiment was done using 30 suckling piglets of Landrace breed at the age of 0 to 7 days and 10 newborn lambs of the Stavropol breed. All animals were kept in identical conditions, they were fed the same balanced diet. The study was conducted according to the following protocol: The piglets of the 1st group (control) received 0.9% NaCl solution at a dose of 0.5 ml/kg intramuscularly on the 1st, 2nd, 3rd and 5th days of the experiment. Piglets of group 2 (experimental) were inoculated with Gamavit at a dose of 0.5 ml/kg intramuscularly on the 1st, 2nd, 3rd and 5th days of the experiment. Lambs were inoculated with Gamavit at a dose of 0.5 ml/kg of body weight on 7th, 14th and 21st days after birth. Using method of enzyme immunoassay we shown that during the study level of STH in the experimental group of piglets inoculated with Gamavit gradually increased from 8.5 mIU/l before the experiment to 14.3 mIU/l on the 5th day. In the control group it ranged from 7.5 mIU/l to 10.2 mIU\l. At the end of the experiment greatest body weight gain was observed in the experimental group and amounted 45.450 g compared with 26,700 g in the control group piglets. In the experimental group of newborn lambs Gamavit induced raise in the STH serum level 2 from 6.5 mIU/l at day 0 to 13.1 mIU/l at day 21. Thus, Gamavit, unlike synthetic growth hormone, ractopamine and other beta-agonists used in livestock, induces the production of endogenous STH, which stimulates growth of the animal, while being safe and rapidly metabolizing on its own metabolic pathway.


2018 ◽  
Vol 18 (4) ◽  
pp. 1007-1027 ◽  
Author(s):  
Małgorzata Świątkiewicz ◽  
Jerzy Księżak ◽  
Ewa Hanczakowska

AbstractThe aim of this experiment was to examine the possibility of replacing part of soybean meal in the diets of sows, their piglets and fatteners with two varieties of high- or low-tannin faba bean seed. Twenty-four sows were allocated to 3 groups, 8 animals in each. Control group (C) received standard feed mixture containing soybean meal as the main protein source. Next groups received standard feed mixture in which part of soybean meal was replaced by high-tannin variety Bobas (group HT) or low-tannin variety Kasztelan (group LT). Faba bean was added to diets at the level of 12 and 14% for pregnant and lactating sows, 6% for piglets, and 12 and 16% for fatteners (grower and finisher, respectively). Diets for half piglets and fatteners were supplemented with the enzyme Ronozyme VP. Apparent digestibility of nutrients was evaluated in a parallel experiment, using the same feeds on 18 barrows weighing about 40 kg (grower) and 80 kg (finisher). There was almost no difference in sow reproductive rates, litter weight and body weight of piglets on the first day of life were similar. Until 35 days of age piglets receiving faba bean grew faster than control ones. Control piglets grew fastest from 35 to 84 days of age, but differences were not significant. Enzyme supplement had a positive effect on body weight only from 56 to 84 days of piglet life. Digestibility of nutrients was lower in pigs fed with faba beans, especially in the grower period. Faba bean HT had lower nutrient digestibility in both periods of fattening. Almost all carcass traits were better in control pigs than in those fed with bean variety Bobas. Meat of these pigs had also the lowest content of unsaturated fatty acids and highest atherogenic indices. In sensory evaluation this meat had also the worst smell and taste. It can be stated that faba bean seeds, in moderate amounts, can partially replace soybean meal in feed for pigs, but some lowering of body weight gain and meat quality is possible especially when high-tannin varieties are used.


Sign in / Sign up

Export Citation Format

Share Document