جستجوی مقالات مرتبط با کلیدواژه « inflammation » در نشریات گروه « دامپزشکی »

Polycystic ovary syndrome (PCOS) is one of the most important endocrine disorders affecting about 5-10% of women in reproductive age. Betaine is a bioactive peptide that has an anti-inflammatory activity. The present study aimed to evaluate the effects of betaine on insulin resistance indices and inflammatory cytokines markers and histology alteration in rat ovary with experimental PCOS. This experimental study was performed on 48 female Wistar rats (170-200 g). PCOS was induced by administration of testosterone enanthate (1 mg/100g/day during 35 days). PCOS rats were treated with betaine (1% in drinking water) for 30 days. At the end of the experimental period, the insulin resistance markers (serum insulin and glucose concentrations the homeostasis model assessment of basal insulin resistance (HOMA-IR), serum estradiol (E2), progesterone (P4) and inflammatory cytokines were measured. The ovaries were also processed for histological study. PCOS induction resulted in insulin resistance, impaired E2, P4 production and elevation of tissue TNF-α, IL-1β levels. Moreover, a significant increase of ovarian cysts and atretic follicles and also a significant reduction in the early corpus luteum were observed in the ovarian tissue of the PCOS groups. Betaine treatment could reduce the inflammatory cytokines and improve steroid productions in PCOS rats. Betaine also restored normal Folliculogenesis by reducing atretic and cystic follicles. Our findings showed the beneficial effects of betaine in PCOS rats by improvement of folliculogenesis, suppression of inflammation in ovary.

Today, the current chemical agents for pain control have relatively many complications. They are associated with the occurrence of disorders in the digestive system, kidney damage, or addiction, which has caused people to find newer drugs that, in addition to removing side effects, are cheap and available. The present in vivo survey aimed to assess the antinociceptive and anti-inflammatory activity of Ferula elaeochytris Korovin methanolic extract (FEME) in male Swiss mice. After obtaining the methanolic extract through the maceration process, the antinociceptive efficacy of FEME at doses of 25 to 100 mg/kg was assessed by the tail-flick, hot-plate, and formalin tests. In addition, anti-inflammatory evaluation was performed by the Carrageenan-induced paw edema model. We found that in the tail-flick and hot plate test, FEME mainly at the dose of 100 mg/kg significantly reduced the latency time as well as better the time of the observance of licking or jumping in comparison with normal saline (P<0.001). We reported that FEME at 50, and 100 mg/kg considerably declined the pain behaviors in the acute and chronic phase in comparison with normal saline (p<0.001). FEME markedly (p < 0.05) declined paw edema in a dose- and time-dependent response, so a significant difference was observed in paw edema followed by treatment with FEME at 50 and 100 mg/kg (p<0.001). To conclude, this study reported the potent analgesic and inflammatory effects of F. elaeochytris methanolic extract to control peripheral and central pain. However, additional experiments are mandatory to clear the accurate mechanisms of action of this plant.

The trace element trivalent chromium has been reported for its beneficial role in experimental colitis and normal gastrointestinal tissues. This study aimed to investigate the effect of trivalent chromium on the injured stomach in mice.

Sixty male slc:ddY mice were used. The animals were randomized into three groups of 20 mice (the control, 10ppm, and 100ppm). Five mice each of twenty were sacrificed on days 0 (for the cytokine study), 3, 7, and 14 and examined. Following anesthesia, the ulcer was induced with acetic acid via laparotomy and through the intraluminal route post-chromium exposure. The blood was obtained from cardiac puncture, and the stomach tissue was scored and excised for myeloperoxidase, catalase, superoxide dismutase, malondialdehyde, total nitrite, cytokines assays, and histology.

Ulcer scores of the chromium-exposed reduced significantly compared to the control. The platelets increased dramatically in 10- and 100 ppm compared to control on day 1. There were decreasing neutrophils in the test groups compared to the control across the days of investigation. The malondialdehyde values (nmol/mg protein) significantly reduced in the 10ppm (6.42 ± 0.24+; 3.70±0.42+) and 100ppm (5.22 ± 0.47+; 2.95 ± 0.31+) groups compared to the control (8.35 ± 0.43; 4.53 ± 0.48) on days 7 and 14 respectively. Superoxide dismutase increased, (p = 0.0372, 0.0441, and 0.0421 on days 3, 7, and 14, respectively) in the chromium groups compared to the control. Myeloperoxidase decreased significantly, p = 0.0466, and 0.0383 on days 3 and 7 in the chromium groups compared to the control group, respectively. There was no significant change with Catalase and Nitrates assessed. IL-1α, TNF-α, and interferon-γ reduced while IL-10 increased in the mRNA chromium exposed.

Chromium exposure to mice upgrades the restoration of gastric ulcers in mice by inhibiting reactive oxygen radicals while promoting endogenous antioxidants

Pro- or anti-inflammatory properties of cytokines in COVID-19: which offer better protection against diseaseI read the article by Al-Mquter et al. that compared circulating levels of 3 cytokines(IL-6, IL-25 and IL-35) amongst healthy controls(HC) and patients with COVID-19. They reported a significant increase in the serum concentration of these cytokines in patients versus HC(1). Their results confirmed again that assessment of cytokine profiles could be used as COVID-19 markers and may also provide practical implications for disease treatment. Nonetheless, understanding the role of cytokines in COVID-19 is complicated because of the complex nature of cytokine networks and the pathogenesis of COVID-19(2). IL-6 is one of the first cytokines produced during COVID-19 and increasing evidence suggests that its alteration may be associated with disease outcome. IL-6 is a pleotropic cytokine and has both pro- and anti- inflammatory effects. Therefore, it appears to operate in protective or pathological immunity to COVID-19. IL-6 can promote immune processes associated with resistance to different pathogens including COVID-19. It contributes to host defense via different pathways, including the stimulation of acute phase responses and hematopoiesis. Nonetheless, dysregulated and persistent synthesis of IL-6 can be resulted to the onset and development of pathological conditions. These different effector functions may be associated with different concentration of IL-6 that may result from different signaling pathwaysIL-6 signaling includes at least three distinct pathways: cis-signalling; trans-signalling and trans-presentation. It seems that IL-6 trans-signalling and trans-presentation are probably responsible for severe progressive COVID-19. These signaling pathways can trigger diffuse inflammation at various levels. Conversely, IL-6 cis-signalling mediates negative feedback mechanisms on proinflammatory cytokines, including suppression of their production, stimulation of their decoy receptors, and inhibition the maturation of Th17 cells. Circulatory IL-6 in COVID-19 patients reaches the peak level at advanced stages around two weeks of disease. Elevated IL-6 (e.g., > 100-120 pg/mL) levels in critical COVID-19 may reflect augmented IL-6 cis-signalling in an attempt to exert homeostatic functions, although there is no general consensus on this issue(3).

Studies conducted on animal models have shown that the administration of glycerol can lead to kidney tissue damage and impaired renal function. This is believed to be caused by oxidative stress and inflammation, which in turn can result in elevated levels of blood urea nitrogen (BUN) and creatinine. These metabolites are commonly used as indicators of renal function. The aim of the current experimental research was to investigate the protective efficacy of ellagic acid in a rat model of rhabdomyolysis induced by glycerol. Sixty healthy adult male Wistar rats weighing between 250 - 300 g were divided into five equal groups including control, rhabdomyolysis (administered 8.00 mL kg-1 of glycerol), and three rhabdomyolysis plus various doses of ellagic acid (25.00, 50.00 and 100 mg kg-1 per day; 72 hr after receiving glycerol for 14 days successively) groups. Serum levels of BUN, creatinine, lactate dehydrogenase, alkaline phosphatase, electrolytes and inflammatory cytokines were evaluated in all rats. Histopathological studies were also performed on kidney tissues from all groups. The administration of ellagic acid resulted in a significant increase in renal function biomarkers compared to the rats with acute kidney injury. This increase was consistent with notable reductions in tumor necrosis factor-α levels and increases in interleukin-10 levels observed in blood samples. Furthermore, the improvement in histopathological indices observed in rats received ellagic acid confirmed its nephroprotective role. The results of the current experimental study suggest that ellagic acid can improve kidney damage following glycerol injection, potentially by modulating the inflammatory process.

Oxidative stress and inflammation are strictly connected, and both perform an important role in the pathogenesis of diabetes mellitus (DM).

This research aimed to investigate the potential protective effect of kudzu root against oxidative stress and inflammation in a streptozotocin (STZ)-induced DM animal model.

DM was induced in male Wistar rats by intraperitoneal injection of STZ (50 mg/kg body weight). The kudzu root (100 mg/kg BW) was administered orally after 1 week of STZ administration in diabetic animals (for 6 weeks).

The diabetic animals exhibited a significant increase in fasting blood glucose, tumor necrosis factor-alpha, and malondialdehyde levels. However, they exhibited a significant decrease in plasma insulin level, superoxide dismutase, and glutathione peroxidase activity. Administration of kudzu root to diabetic animals reversed these effects.

The current study indicated that kudzu root has potent antidiabetic properties, likely through its anti-inflammatory and anti-oxidative properties in the STZ-diabetic rat model.

The current investigation was conducted with the aim to elucidate and determine the anti-cancer efficacy in vitro on colon carcinoma human cell lines and to determine its probable mode of action.

Anti-proliferative and apoptotic effect of various doses of essential oil from Ferula asafoetida was investigated on colon cancer cell lines i.e. CW620 and CT26. WT. The percentage cytotoxicity was determined by MTT assay. In addition, expression studies were carried out to determine the mode of action by determining the levels of NF-kB, TNF-alpha, TGF-beta and Caspases.

The potent anti-proliferative activity has been observed in both the cell lines. The percentage cytotoxicity is directly proportional to the increasing concentration of the essential oil. The same was also confirmed in the expression studies which shows significant upregulation of the antiapoptotic characteristics and down regulation of pro-carcinogenic factors.

The essential oil shows potent anti-cancer activity and shows the role in gene regulation to attenuate the colon cancer.

Limited information exists about the relationship of adipose tissue with inflammation, oxidative stress, and energy metabolism during the transition period in dairy cows. The objective of this study was to assess the changes and relation of some adipokines, cytokines, oxidative biomarkers, and serum biochemical parameters related to energy balance (EB) in cows during the transition period. Thirty multiparous Holstein cows were selected based on estimated parturition date, and blood samples were collected from jugular vein on one-week prepartum and one and three weeks postpartum and used to measure the parameters. The serum levels of beta-hydroxybutyric acid (BHB), non-esterified fatty acid, cholesterol, high-density lipoprotein (HDL), aspartate aminotransferase, and total antioxidant capacity increased significantly, and glucose, urea, triglyceride (TG), and low-density lipoprotein (LDL) decreased significantly after parturition. The serum values of adiponectin, resistin, leptin, and cytokines including interleukin 6 (IL-6) and tumor necrosis factor (TNF)-α were not changed significantly during the experiment. The results of the Pearson correlation revealed a significant negative correlation between BHB with glucose, albumin, cholesterol, HDL, LDL, and a positive correlation with TG and malondialdehyde. Also, there was a significant direct correlation between insulin and leptin, adiponectin, resistin, IL-6 and TNF-α in the whole experiment period. These emphasize the difficulty of dairy cows to manage the energy requirements during the transition period. It can be stated that adipokines and cytokines may have an essential role in the metabolic status in this period, and control of their production and, or secretion could be helpful in EB during the transition period.

In this study, it was aimed to investigate the association between inflammatory reaction of tumoral microenvironments with interleukin responses in ovine pulmonary adenocarcinomas (OPAs). Material of the study consisted of 26 sheep lung tissue samples being brought to the Pathology Department for routine diagnosis. Cases were collected between years 2009 - 2021; pre-diagnosis was based on clinical symptoms, anamnesis and gross lesion of the lungs. These tissues were designated in two groups as control (n = 6) and OPA (n = 20) groups. Choice of immunohistochemical staining was avidin-biotin peroxidase method. Reverse transcription polymerase chain reaction (RT-PCR) was used to confirm Jaagsiekte sheep retrovirus from paraffin-embedded tissues. On gross examination of OPAs, lesions seen were mostly in the caudal lobes of the lung, 1.00 – 2.00 cm in diameter as gray-white consolidated foci and in microscopic observation, tumor cells showed acinar, papillary or mixed growths. No expressions of interleukin (2 and 8) were observed in the control group. All OPAs cases were positive for interleukins (2 and 8) expressions. A total of eight tissue samples were detected as positives through RT-PCR. In conclusion, in this study, it was determined that interleukin-2 and interleukin-8 were produced from tumor microenvironment elements, especially tumor-associated macrophages, and these interleukins showed pro-inflammatory effects. Interleukins and the inflammatory reaction may promote the development of OPA.

Inflammation, even overt or subtle, has an important role in the pathogenesis of various diseases. Hemogram derived markers are novel inflammatory predictors and have been studied by the authors in different settings, including gastrointestinal conditions. Of those, mostly used indices are mean platelet volume (MPV), red cell distribution width (RDW), neutrophil-to-lymphocyte ratio(NLR), platelet-to-lymphocyte ratio (PLR), and monocyte-to-lymphocyte ratio. Besides the well-established roles of these markers in various hematological issues, including differentiating anemia, platelet activation and infections, recent literature suggest that they could be associated with the inflammatory burden in gastrointestinal conditions from inflammatory disease to functional disorders and malignancies. In present work, we aimed to review the literature to reveal the association between these markers and gastrointestinal diseases to establish their diagnostic and prognostic role in disorders of the gastrointestinal system. In present work, we aimed to review the literature to reveal the association between these markers and gastrointestinal diseases to establish their diagnostic and prognostic role in disorders of the gastrointestinal system.

Dermatitis, like inflammation, is a group of common dermatological symptoms and may be associated with systemic and skin diseases. The objective of the current study is to evaluate the potential anti-inflammatory effect of the topical allopurinol against inflammation like skin dermatitis induced by1-isobutyl-1H-imidazo [4,5-c]quinolin-4-amine (IQA) in mice model. The current study allocated the thirty-two mice into four groups (n=8) as follows: i) control group, mice where a white petroleum jelly base applied topically on the dorsal of mice once daily; ii) induction group, mice were received IQA cream (62.5 mg) of (5%) on their back once daily; and iii) the treatment group, mice were treated with both (62.5 mg) of (5%) IQA and (5%) allopurinol gel topically; the betamethasone group, mice were treated with both (62.5 mg) of (5%) IQA and betamethasone ointment topically. All groups were treated daily for seven days period. The allopurinol-treated group exerted non-significant differences compared with the induction group in both visional and histopathological changes. The present study revealed that the allopurinolgel (5%) did not affect skin inflammation- induced by IQA in the laboratory mice.

The study was aimed to evaluate the effects of hydro-ethanol extract Zataria multiflora on the brain tissue oxidative damage, and hippocampal interleukin-6 (IL-6) as well as learning and memory capacity in lipopolysaccharide (LPS) - challenged rats. The rats were randomized into five groups as follow: Control group: Rats were treated with saline, LPS group: Rats were treated with LPS 1.00 mg kg-1, ZM50, ZM100 and ZM200 groups in which the rats were treated with Z. multiflora extract (50.00, 100 or 200 mg kg-1 per day, respectively). The treatments including extract or vehicle were administered intraperitoneally ‎and given three days before the behavioral tests and were continued within a6-day behavioral experiment. Injection of LPS was daily done before the behavioral tests. Finally, the brains were collected for biochemical evaluations. Although LPS administration prolonged the latency in Morris water maze and shortened the latency to enter the dark chamber in passive avoidance test, ZM extract restored these changes to approach control group values. Also, LPS increased IL-6, malondialdehyde (MDA) and nitric oxide (NO) metabolites levels and lowered thiol, superoxide dismutase (SOD) and catalase (CAT) levels in the brain, however, Z. multiflora extract reduced IL-6, MDA and NO metabolites concentrations, but increased thiol content, SOD, and CAT levels. The results of this study showed that Z. multiflora ameliorated learning and memory dysfunction in LPS - challenged rats by alleviating of inflammatory responses and brain tissue oxidative damage.

Altered cytokine profile and weakened immunity along with clinical or subclinical ketosis (SCK) are among the remarkable challenges around parturition. Therefore, the present study aimed to compare some inflammatory cytokines and immunologic factors between two groups of healthy and SCK cows. Serum specimens were collected from 30 clinically healthy dairy cows on the early dry period (EDP), one week before expected calving (-1w), and one week postpartum (+1W). The animals were divided into the two groups of healthy (N = 20) and SCK (N = 10) based on serum β-hydroxybutyrate cut-off of 1.2 mmol/L on +1W. The concentrations of immunoglobulin G (IgG), interleukin-4 (IL-4), IL-10, interferon-γ (IFN-γ), tumor necrosis factor-α (TNF-α), and haptoglobin (Hp) were measured by enzyme-linked immunosorbent assay. The data were statistically analyzed by mixed analysis of variance and independent samples t-test using the SPSS software. The findings demonstrated that the overall levels of IL-4 (p = 0.033), IL-10 (p = 0.049), TNF-α (p = 0.028), and Hp (p = 0.018) were significantly higher in the SCK group than the control group. Furthermore, the interaction of time × SCK had a significant influence on IL-4 (p = 0.028) and Hp (p = 0.022) levels. It was revealed that IL-4 (p = 0.008), IL-10 (p = 0.009), TNF-α (p = 0.01), and Hp (p = 0.002) were all significantly higher in the SCK group than the control group on +1W. In conclusion, SCK in dairy cattle might have a relationship with immunologic and inflammatory changes around calving.