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Air pollution in the workplace is a major health issue in developing countries. Cement manufacturing is a complex process that extracted the raw materials to the grinding of the end product in the cement factories (CF). Workers in CF are exposed to many harmful factors, such as dust and respirable particles of cement. This study is aimed to compare the respiratory symptoms, pulmonary function tests (PFT), total and differential white blood cells (WBC), serum level of high-sensitivity C-reactive protein (hs-CRP), and serum or urine heavy metal levels were between CF workers with control subjects. The case-control study with convenience sampling was undertaken. A total of 40 nonsmoking male cement workers with 40 healthy volunteers were recruited in the study. Respiratory symptoms, pulmonary function tests (PFT), total and differential white blood cells (WBC), serum level of high-sensitivity C-reactive protein (hs-CRP), and serum or urine heavy metal levels were compared between the two groups. The frequency of respiratory symptoms including wheezing, dyspnoea, cough, and sputum, haematological parameters, serum level of hs-CRP level, as well as serum or urine heavy metal levels were significantly higher in cement workers. All PFT values except forced vital capacity (FVC) were lower in workers of the CF workers compared to control subjects. Respiratory insult, systemic inflammation and heavy metal changes were shown in CF workers. Increased serum and urine heavy metals may induce inflammatory processes leading to lung disorders. These results emphasize that the continuous monitoring of workers' workplace safety and occupational status. [ABSTRACT FROM AUTHOR]

Paraquat (PQ) is an herbicide toxin that induces injury in different organs. The anti‐inflammatory and antioxidant effects of carvacrol were reported previously. The effects of carvacrol and pioglitazone (Pio) alone and their combination on inhaled PQ‐induced systemic and lung oxidative stress and inflammation as well as behavioral changes were examined in rats. In this study, animals were exposed to saline (control [Ctrl]) or PQ (PQ groups) aerosols. PQ‐exposed animals were treated with 0.03 mg/kg/day dexamethasone (Dexa), 20 and 80 mg/kg/day carvacrol (C‐L and C‐H), 5 mg/kg/day Pio, and Pio+C‐L for 16 days. Inhaled PQ markedly enhanced total and differential white blood cell (WBC) counts, nitric oxide (NO), and malondialdehyde (MDA) levels but decreased catalase (CAT) and superoxide dismutase (SOD) activities and thiol levels both in the bronchoalveolar lavage fluid (BALF) and blood and increased interferon‐gamma (INF‐γ) and interleukin‐10 (IL‐10) levels in the BALF (p < 0.001 for all cases) except lymphocyte count in blood which was not significantly changed. The escape latency and traveled distance were increased in the PQ group. However, the time spent in the target quadrant in the Morris water maze (MWM) test and the duration of time latency in the dark room in the shuttle box test were reduced after receiving an electrical shock (p < 0.05–p < 0.001). Inhaled PQ‐induced changes were significantly improved in carvacrol, Pio, Dexa, and especially in the combination of the Pio+C‐L treated groups (p < 0.05–p < 0.001). Carvacrol and Pio improved PQ‐induced changes similar to Dexa, but ameliorative effects produced by combination treatments of Pio+C‐L were more prominent than Pio and C‐L alone, suggesting a potentiating effect for the combination of the two agents. [ABSTRACT FROM AUTHOR]

Cardiac arrest and stroke as a life-threatening event that may occur in throughout the female life, especially during pregnancy or after delivery. Previous studies demonstrated that cerebral ischemia during pregnancy or the puerperium is a rare occurrence but is associated with significant mortality and high morbidity. This study was designed to assess the effects of pregnancy and lactation on behavioral deficits, neural density, and angiogenesis in rat dams undergoing global ischemia. Thirty-two female Wistar rats were divided into four groups: virgin-Sham (Vir-Sham) group, virgin-ischemic (Vir-Isc) group, pregnancy-lactation-sham (P-L-Sham) group, and pregnancy-lactation-ischemic (P-L-Isc) group. Global brain ischemia was induced in ischemic groups by using the 2-vessel occlusion (2-VO) model at the end of lactation phase. Seven days after 2-VO, anxiety-like signals and passive avoidance memory tests were assessed in animals. We found that the lactation significantly improved memory and reduced anxiety-like signals in P-L-Isc group as compared with Vir-Isc group. Moreover, angiogenesis and neural density significantly increased in the P-L-Isc group as compared with the Vir-Isc group. This finding for the first time indicated that lactation protects the maternal brain against ischemic insult partly through promoting angiogenesis and neurogenesis. [ABSTRACT FROM AUTHOR]

The Olibanum the resin of Boswellia serrata is assumed that attenuates the generation of pro-inflammatory and oxidant agents, reinforces the anti-inflammatory cytokines and anti-oxidant agents to improve memory impairment induced by lipopolysaccharide (LPS). The rats were treated as: (1) saline, (2) LPS, (3 and 4) Olibanum 100 or 200 mg/kg plus LPS. In the Morris water maze (MWM), LPS increased the duration and the distance traveled to find the platform while decreased the time spent and the distance traveled in the target quadrant. Moreover, LPS decreased the step-through latency to enter the dark in passive avoidance (PA). Pretreatment with Olibanum enhanced the performances of the rats in MWM and PA tests. LPS also increased IL-6, TNF-α, NO, GFAP, and MDA levels while decreased IL-10, BDNF, CAT, SOD, and thiol. Olibanum reversed the effects of LPS. Olibanum showed anti-inflammatory and antioxidant properties. It could improve memory impairment induced by LPS. [ABSTRACT FROM AUTHOR]

Objectives: The effects of hydroalcoholic extract of Zataria multiflora (Z. multiflora) on memory changes, as well as lung injury due to inhaled paraqut (PQ) in rat, were examined. Method: Control group of rat with saline aerosol administration, PQ groups with PQ aerosol (27 and 54 mg/m3) administration, PQ groups treated with two doses of the extract (200 and 800 mg/kg/day) and dexamethasone (0.03 mg/kg/day) were studied. Shuttle box and Morris Water Maze (MWM) tests were carried out as well as oxidant, anti-oxidant markers, total and differential white blood cell (WBC) counts and cytokine levels in broncho-alveolar lavage (BALF). Results: Inhaled PQ significantly increased the escape latency and travelled distance in MWM test, but the time spent in the target quadrant on the probe day was significantly reduced (p < 0.05 to p < 0.001). The latency to enter the dark room at 3, 24, and 48 h after an electrical shock was reduced due to PQ (p < 0.05 to p < 0.001). Exposure to PQ significantly increased total WBC, neutrophil, eosinophil, lymphocyte, and monocyte counts, IL-10, interferon gama (INF-γ), nitrite (NO2), and malondialdehyde (MDA) levels, but catalase (CAT), superoxide dismutase (SOD), and thiol levels were decreased (p < 0.05 to p < 0.00). Z. multiflora and dexamethasone treatment significantly improved all behavioral as well as lung changes induced by inhaled PQ (p < 0.05 to p < 0.01). Conclusion:Z. multiflora treatment improved learning and memory impairment as well as lung inflammation and oxidative stress induced by inhaled PQ. [ABSTRACT FROM AUTHOR]

Diabetes mellitus is a common metabolic disease with considerable morbidity and mortality. Untreated or improperly-treated diabetes can be associated with several long-term complications that necessitate an effective way to manage diabetes. Due to the side effects of synthetic glucose-lowering agents, alternative therapeutic modalities such as medicinal plants have attracted notable attention. Teucrium polium L. is a medicinal herb with antioxidant, antinociceptive, anti-inflammatory, hypolipidemic, hepatoprotective, and hypoglycemic properties. In vitro and in vivo studies have been conducted to characterize the anti-diabetic properties of Teucrium polium L. and its bioactive compounds. We conducted a literature study using Scopus, PubMed, and Google Scholar including the keywords "diabetes" and "Teucrium polium". We also scanned all the references cited by the retrieved articles. According to this review, Teucrium polium administration displayed anti-diabetic effects by targeting different mechanisms and pathways, such as enhancement of insulin secretion and insulin level, improvement of oxidative damage, regeneration of pancreatic β-cells, and promotion of glucose uptake in muscle tissues by increasing GLUT-4 translocation as well as inhibiting α-amylase activity. Although Teucrium polium has been widely regarded as a traditional method, the pharmacological studies on anti-diabetic effects are not sufficient, most studies are either in-vivo or in-vitro. The preclinical and clinical studies are further required to confirm the efficacy of Teucrium polium. [ABSTRACT FROM AUTHOR]

Statins provide greater protection than predicted from just cholesterol-lowering effects, which is possibly mediated by other pleiotropic actions. This study aimed to examine the possible interaction effect of asthma on lipid profiles and evaluate the effect of rosuvastatin treatment on asthma. The animals were assigned into (1) control, (2) asthmatic, (3) hyperlipidemic, (4) asthmatichyperlipidemic, (5) rosuvastatin (40 mg/kg/day intraperitoneally, for 3 weeks)-treated asthmatic, (6) rosuvastatin-treated hyperlipidemic and (7) rosuvastatin-treated asthmatic-hyperlipidemic groups. Tracheal responsiveness to methacholine and ovalbumin, total and differential WBC (white blood cell) counts, and oxidative stress markers in bronchoalveolar lavage fluid (BALF) were evaluated. In the asthmatic and asthmatic-hyperlipidemic groups, tracheal responsiveness to ovalbumin, total WBC count, numbers of eosinophils, neutrophils, and monocytes were higher than the control group (p<0.001). A left-ward shift in the concentration-response curves to methacholine, an increase in nitrite and malondialdehyde concentrations, and a decrease in total thiol content, superoxide dismutase and catalase activities were also observed in the asthmatic and asthmatic-hyperlipidemic groups compared to control group (p<0.01 to p<0.001). Beyond lipid-lowering effect in the treated hyperlipidemic and asthmatic-hyperlipidemic groups, rosuvastatin treatment decreased tracheal responsiveness to methacholine, reduced total WBC count, the numbers of eosinophils, neutrophils, and monocytes, as well as decreased malondialdehyde concentration, and increased total thiol content, superoxide dismutase and catalase activities in treated asthmatic and asthmatic-hyperlipidemic groups (p<0.05 to p<0.001). The improving effect of rosuvastatin on asthmatic and asthmatic-hyperlipidemic animals was shown due to pleiotropic mechanisms including the effect on airway hyperresponsiveness, lung inflammation, and oxidative stress. [ABSTRACT FROM AUTHOR]

Coronary artery disease (CAD) is a well‐known pathological condition that is characterized by high morbidity and mortality. The main pathological manifestation of CAD is myocardial injury due to ischemia–reperfusion (I–R). Currently, no efficacious treatment of protecting the heart against myocardial I–R exists. Hence, it is necessary to discover or develop novel strategies to prevent myocardial‐reperfusion injury to improve clinical outcomes in patients with CAD. A large body of experimental evidence supports cardioprotective properties of curcumin and the ability of this phytochemical to modify some cardiovascular risk factors. However, the detailed effects of curcumin in myocardial I–R injury are still unclear and there is a lack of evidence concerning which curcumin regimen may be ideal for myocardial I–R injury. This paper presents a brief review of the pathophysiology of myocardial I–R injury and the mechanisms of action of curcumin in reducing myocardial I–R injury. Coronary artery disease (CAD) is a well‐known pathological condition that is characterized by high morbidity and mortality; the main pathological manifestation of CAD is myocardial injury due to ischemia–reperfusion (I–R). Currently, no efficacious treatment for protecting the heart against myocardial I–R exists; hence, it is necessary to discover or develop novel strategies to prevent myocardial‐reperfusion injury to improve clinical outcomes in patients with CAD. A large body of experimental evidence supports cardioprotective properties of curcumin and the ability of this phytochemical to modify some cardiovascular risk factors, but the detailed effects of curcumin in myocardial I–R injury are still unclear and there is a lack of evidence concerning which curcumin regimen may be ideal for myocardial I–R injury. Therefore, this paper presents a brief review of the pathophysiology of myocardial I–R injury and the mechanisms of action of curcumin in reducing myocardial I–R injury. [ABSTRACT FROM AUTHOR]

Saffron, Crocus sativus L. (C. sativus) is rich in carotenoids and used in traditional medicine for treatment of various conditions such as coughs, stomach disorders, amenorrhea, asthma and cardiovascular disorders. These therapeutic effects of the plant are suggested to be due to its relaxant effect on smooth muscles. The effect of C. sativus and its constituents on different smooth muscles and the underlying mechanisms have been studied. Several studies have shown the relaxant effects of C. sativus and its constituents including safranal, crocin, crocetin and kaempferol on blood vessels. In addition, it was reported that saffron stigma lowers systolic blood pressure. The present review highlights the relaxant effects of C. sativus and its constituents on various smooth muscles. The possible mechanisms of this relaxing effect including activation of β2-adrenoceptors, inhibition of histamine H1 and muscarinic receptors and calcium channels and modulation of nitric oxide (NO) are also reviewed. [ABSTRACT FROM AUTHOR]