Showing papers on "Lead acetate published in 2019"
TL;DR: The findings describe the potential mechanisms involved in the alleviation of PbAc-induced liver injury by luteolin via its potent anti-inflammatory, antioxidant, and anti-apoptotic properties and how LUT supplementation significantly reversed all of the tested parameters in comparison with the Pb Ac-exposed group.
Abstract: The abundant use of lead (Pb; toxic heavy metal) worldwide has increased occupational and ecosystem exposure, with subsequent negative health effects. The flavonoid luteolin (LUT) found in many natural foodstuffs possesses antioxidant and anti-inflammatory properties. Herein, we hypothesized that LUT could mitigate liver damage induced by exposure to lead acetate (PbAc). Male Wistar rats were allocated to four groups: control group received normal saline, LUT-treated group (50 mg/kg, oral, daily), PbAc-treated group (20 mg/kg, i.p., daily), and LUT+PbAc-treated group (received the aforementioned doses via the respective routes of administration); the rats were treated for 7 days. The results revealed that PbAc exposure significantly increased hepatic Pb residue and serum activities of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and total bilirubin value. Oxidative reactions were observed in the liver tissue following PbAc intoxication, characterized by the depletion and downregulation of antioxidant proteins (glutathione, glutathione reductase, glutathione peroxidase, superoxide dismutase, catalase, nuclear factor erythroid 2-related factor 2, and heme oxygenase-1), and an increase in oxidants (malondialdehyde and nitric oxide). Additionally, PbAc increased the release and expression of the pro-inflammatory cytokines (tumor necrosis factor alpha and interleukin-1 beta), inducible nitric oxide synthase, and nuclear factor kappa B. Moreover, PbAc enhanced hepatocyte loss by increasing the expression of pro-apoptotic proteins (Bax and caspase-3) and downregulating the anti-apoptotic protein (Bcl-2). The changes in the aforementioned parameters were further confirmed by noticeable histopathological lesions. LUT supplementation significantly reversed all of the tested parameters in comparison with the PbAc-exposed group. In conclusion, our findings describe the potential mechanisms involved in the alleviation of PbAc-induced liver injury by luteolin via its potent anti-inflammatory, antioxidant, and anti-apoptotic properties.
77 citations
TL;DR: Results illustrated that ferulic acid has a protective action against toxicity caused by lead acetate in rats and may have future therapeutic relevance in the prevention of lead acetates-induced testicular and renal toxicity in rats.
Abstract: Oxidative stress is an imbalance between free radicals and antioxidants which leads to reactive oxygen species (ROS) production in cells. Reactive oxygen species contains oxygen radicals that easily react with other molecules in the biological system. For decades, lead acetate (Pb(C2H3O2)2) is used as an additive for many widely used chemical products such as insecticides, hair dyes, and cosmetics; however, contact with lead acetate may irritate skin, eyes, and mucous membranes. In the present study, the antioxidant and anti-inflammatory effect of using ferulic acid to inhibit lead acetate-induced toxicity in rats is investigated. Lead acetate was orally given at a dose of 20 mg/kg body weight for 10 days, either alone or with ferulic acid at dose 25 mg/kg. Serum luteinizing hormone (LH), total testosterone, and follicle-stimulating hormone (FSH) levels were measured. Also, reactive oxygen species (ROS), lipid peroxidation (LPO), total antioxidant capacity (TAC), and catalase (CAT) activities were determined. In addition, histopathological changes of testes and kidney were examined. Results showed that administration of lead acetate induced oxidative stress through attenuation of luteinizing hormone, total testosterone, and follicle-stimulating hormone levels in serum. Moreover, the kidney and testes of lead acetate-treated animals exhibited elevation of ROS level, lipid peroxide levels, as well as lysosomal enzyme activity such acid phosphatase and N-acetyl-β-glucosminidase. DNA fragmentation and histological changes were also observed in lead acetate-treated group. In contrast, ferulic acid treatment reduced the deleterious effects induced by lead acetate in both testes and kidney tissues. These results illustrated that ferulic acid has a protective action against toxicity caused by lead acetate in rats. In conclusions, ferulic acid may have future therapeutic relevance in the prevention of lead acetate-induced testicular and renal toxicity in rats.
40 citations
06 Sep 2019
TL;DR: It is suggested that curcumin attenuates Pb-induced neurotoxicity via inhibition of oxidative stress and chelating activity and restored the histological architecture of the cerebellum.
Abstract: Lead (Pb) is a toxic, environmental heavy metal that induces serious clinical defects in all organs, with the nervous system being its primary target. Curcumin is the main active constituent of turmeric rhizome (Curcuma longa) with strong antioxidant and anti-inflammatory properties. This study is aimed at evaluating the therapeutic potentials of curcumin on Pb-induced neurotoxicity. Thirty-six male Sprague Dawley rats were randomly assigned into five groups with 12 rats in the control (normal saline) and 6 rats in each of groups, i.e., the lead-treated group (LTG) (50 mg/kg lead acetate for four weeks), recovery group (RC) (50 mg/kg lead acetate for four weeks), treatment group 1 (Cur100) (50 mg/kg lead acetate for four weeks, followed by 100 mg/kg curcumin for four weeks) and treatment group 2 (Cur200) (50 mg/kg lead acetate for four weeks, followed by 200 mg/kg curcumin for four weeks). All experimental groups received oral treatment via orogastric tube on alternate days. Motor function was assessed using a horizontal bar method. The cerebellar concentration of Pb was evaluated using ICP-MS technique. Pb-administered rats showed a significant decrease in motor scores and Superoxide Dismutase (SOD) activity with increased Malondialdehyde (MDA) levels. In addition, a marked increase in cerebellar Pb concentration and alterations in the histological architecture of the cerebellar cortex layers were recorded. However, treatment with curcumin improved the motor score, reduced Pb concentration in the cerebellum, and ameliorated the markers of oxidative stress, as well as restored the histological architecture of the cerebellum. The results of this study suggest that curcumin attenuates Pb-induced neurotoxicity via inhibition of oxidative stress and chelating activity.
32 citations
TL;DR: SDS has obvious antioxidant activity; it can cure liver injury caused by lead acetate by inhibiting oxidative stress and increasing the antioxidant stress activity, thus improving the liver tissue structure.
Abstract: Lead has heavy metal toxicity which endangers human and animal health. Salidroside (SDS) is a natural antioxidant that has extensive pharmacological usage. However, its protective effects on lead-induced oxidative stress and hepatotoxicity has not been reported. In this study, we established an animal model to evaluate the protective effects of SDS on chronic lead exposure induced oxidative stress and hepatotoxicity. Forty healthy Sprague-Dawley (SD) rats were assigned to control group (control, animals were provided with distilled water, n = 10); lead acetate-exposed group (PbAc, animals received lead acetate solution of 500 ppm for 60 days, n = 10); low dosage of SDS-treated group (PbAc-SDS-L, lead acetate exposed animals were given intragastric SDS 150 mg/kg body weight for 60 days, n = 10); and high dosage of SDS-treated group (PbAc-SDS-H, lead acetate exposed animals were given intragastric SDS 300 mg/kg body weight for 60 days, n = 10). The results showed that lead exposure caused a significant increase in serum ALP, AST, ALT, and TB (P < 0.01), and these were reversed after treatment with salidroside for 60 days. Compared to the control, the liver GSH, SOD, and GSH-Px were decreased significantly after lead acetate exposure (P < 0.01). However, after treatment with SDS for 60 days, those were dose-dependently reversed. Similarly, MDA was significantly increased in the PbAc group (P < 0.01), and it was significantly decreased in SDS treatment group. Moreover, SDS ameliorated lead-induced congestion and necrosis of hepatocytes. In addition, the RT-PCR and immunohistochemistry results revealed that the PbAc group showed a significant increase in the protein and mRNA of cytochrome P450 2E1 (CYP2E1) and NADPH oxidase 2 (NOX2) in rat liver. Treatment with SDS significantly reversed CYP2E1 and NOX2 expressions in the liver of lead-exposed rats. The results above indicated that SDS has obvious antioxidant activity; it can cure liver injury caused by lead acetate by inhibiting oxidative stress and increasing the antioxidant stress activity, thus improving the liver tissue structure.
25 citations
TL;DR: Investigation of the therapeutic and protective effects of green tea active principle, epigallocatechin gallate (EGCG), on the lead toxicity-induced infertility in male rats concluded that EGCG administration can provide a significant protection against testicular toxicity caused by pb.
24 citations
TL;DR: DAS seemed to be a promising agent for protection against Pb‐induced testicular toxicity through antioxidative properties, beside regulation of testicular apoptosis and aromatase expression.
22 citations
TL;DR: It could be concluded that, the adverse effects induced by lead acetate, were markedly ameliorated by co-treatment with S. maxima more than garlic.
Abstract: Lead (Pb) is a ubiquitous environmental and industrial pollutant with worldwide health problems. The present study was designed to investigate the neurotoxic effects of Pb in albino rats and to evaluate the ameliorative role of garlic as well as Spirulina maxima against such toxic effects. Forty adult male rats were used in this investigation (10 rats/group). Group I: served as control, Group II: rats received lead acetate (100 mg/kg), Group III: rats received both lead acetate (100 mg/kg) and garlic (600 mg/kg) and Group IV: rats received both lead acetate (100 mg/kg) and spirulina (500 mg/kg) daily by oral gavage for one month. Exposure to Pb acetate adversely affected the measured acetyl cholinesterase enzyme activity, oxidative stress and lipid peroxidation parameters as well as caspase-3 gene expression in brain tissue (cerebrum and cerebellum). Light and electron microscopical examination of the cerebrum and cerebellum showed various lesions after exposure to Pb which were confirmed by immunohistochemistry. On the other hand, administration of garlic and spirulina concomitantly with lead acetate ameliorated most of the undesirable effects. It could be concluded that, the adverse effects induced by lead acetate, were markedly ameliorated by co-treatment with S. maxima more than garlic.
22 citations
TL;DR: The results indicated a down- regulation of interleukin (IL)-2 and IFN-γ and an up-regulation of NO, iNOS, interleukains, and heat shock proteins in Pb-damaged hearts in chicken hearts after Pb treatment.
Abstract: Lead (Pb) is an environmental pollutant and can damage organisms. Selenium (Se) can alleviate Pb poisoning. The present study aimed to investigate the alleviative effect of Se on Pb-induced immune toxicity in chicken hearts. One-hundred-and-eighty Hy-line male chickens were randomly divided into four groups at 7 days of age. The control group was offered a standard commercial diet (SD) and drinking water (DW); the Se group was offered SD supplemented with sodium selenite (SeSD) and DW; the Pb + Se group was offered SeSD and DW supplemented with lead acetate (PbDW); and the Pb group was offered SD and PbDW. Relative mRNA expression of inducible nitric oxide synthase (iNOS), interleukins (IL-2, IL-4, IL-6, IL-12β, IL-17 and IFN-γ), and heat shock proteins (HSP27, HSP40, HSP60, HSP70, and HSP90) were determined by means of quantitative real-time PCR. Relative protein expression of iNOS, HSP60, HSP70, and HSP90 was assessed, as well as nitric oxide (NO) content and iNOS activity in heart tissue. The results indicated a down-regulation of interleukin (IL)-2 and IFN-γ and an up-regulation of NO, iNOS, interleukins (IL-4, IL-6, IL-12β, IL-17), and heat shock proteins (HSP27, HSP40, HSP60, HSP70, and HSP90) in Pb-damaged hearts. Se alleviated all of the above Pb-induced changes. There were time-dependent effects on NO content, iNOS activity, and mRNA levels of iNOS, IL-2, IL-4, IL-6, IL-17, HSP27, HSP40, HSP60, HSP70, and HSP90 after Pb treatment in the chicken hearts. Se alleviated Pb-induced immune toxicity in the chicken hearts.
21 citations
TL;DR: Investigation of the effects of Pb on hydrogen peroxide and malonedialdehyde contents, activities and mRNA levels of antioxidant enzymes after Oxya chinensis were acutely treated with lead acetate suggested that the cooperation of multiple antioxidants rather than a single factor might be responsible for the antioxidant defenses against Pb stress.
20 citations
TL;DR: It is suggested that clomiphene citrate may stimulate testicular testosterone synthesis, sperm motility and viability via luteinizing hormone in a context of lead acetate-induced reproductive toxicity.
Abstract: OBJECTIVE The current study investigated the effects of clomiphene citrate on the hypothalamic-pituitary-testicular axis, steroidogenesis, sperm parameters, and testicular antioxidant enzyme activity of male Wistar rats submitted to lead acetate (Pb)-induced reproductive toxicity. METHODS Twenty adult male Wistar rats were divided into four groups of equal size as follows: Control; Clomid (0.35 mg/kg); Pb (10 mg/kg); and Clomid + Pb. Serum levels of follicle stimulating hormone (FSH), luteinizing hormone (LH), testosterone, testicular 17-β hydroxysteroid dehydrogenase (17-β HSD) activity, androgen receptors, catalase activity, superoxide dismutase (SOD), malondialdehyde (MDA), sperm motility, viability, counts and morphology were estimated after oral administration of Clomid and/or lead acetate for 35 consecutive days. Data were analyzed using ANOVA at p<0.05. RESULTS Lead acetate significantly decreased (p<0.05) serum LH and testosterone levels, testicular 17β-HSD activity, androgen receptor expression, sperm motility, viability, counts, catalase activity, and SOD when compared with controls. Abnormal sperm morphology and MDA were significantly increased (p<0.05) in the Pb group compared with controls. Clomid co-administrated with lead acetate significantly increased (p<0.05) serum LH, testosterone levels, testicular 17β-HSD, androgen receptor expression, sperm motility and viability when compared with the group given lead acetate. CONCLUSIONS The present study suggests that clomiphene citrate may stimulate testicular testosterone synthesis, sperm motility and viability via luteinizing hormone in a context of lead acetate-induced reproductive toxicity.
19 citations
TL;DR: In this article, the effect of lead acetate toxicity on Dunaliella algae and their interaction with a diet supplemented with an 11.5g/kg diet was investigated.
Abstract: The present study was intended for investigating the effect of lead acetate toxicity (5 or 10 mg lead acetate/liter water), Dunaliella algae (11 g/kg diet)-supplemented diet and their interaction i...
TL;DR: Pb exposure induced the immunosuppression of C. japonica and resulted in bioaccumulation, which could subsequently increase the disease susceptibility and threaten the food safety.
TL;DR: The results suggest that allicin is a potent agent able to ameliorate lead acetate-induced learning and memory deficits during early development, and may thus be useful for defeating lead acetates toxicity.
TL;DR: The combination of TUR and Vit-C has shown the most protective effects against lead acetate-induced hepatotoxicity and treatment with both antioxidants ameliorated all the altered parameters and induced marked improvement of liver architecture.
Abstract: Background:Lead is a common environmental and occupational pollutant which induced multiorgans dysfunction. The present study was designed to investigate the hepatoprotective effects of turmeric (T...
TL;DR: Exposure of rabbits to lead acetate resulted in negative effects on the growth performance and altered the haematological and biochemical parameters, in addition to its adverse impact on cytological and molecular characterization of animals.
Abstract: Heavy metals have enormous variety of deleterious effects on many organs in the body. This study demonstrated the toxic influences of lead on the growth, biochemical, cellular and molecular aspects of developing rabbits. Seventy-five rabbits (New Zealand NZW) were divided into five equal groups as follows; control (C) and four treatment groups (T1-4) orally administered lead acetate solution as follow T1: 20, T2: 30, T3: 50 and T4: 70 mg/kg body weight. Lead resulted in a significant decrease in live body weight, daily body weight gain and feed intake in T3 and T4 compared to those in other groups. Blood haematology measurements such as red blood cells, haematocrit (HCT), mean corpuscular volume, platelet, white blood cells and lymphocytes were significantly influenced by the high level of lead. Oral administration of lead significantly reduced total proteins in the serum. It was observed that the high lead level led to significantly (p < 0.05) increased levels of aspartate aminotransferase, alanine aminotransferase enzymes, urea and creatinine. Four random amplified polymorphic DNA primers polymorphism were detected among the treatment groups. Total number of induced bands (loss or appearance) compared with control group were 4, 10, 10 and 14 bands using primers P1, P2, P3 and P4 respectively. Number of micronuclei showed a dose-response increase and the difference was highly significant especially between control compared with T3 and T4 groups. From our results, we can conclude that exposure of rabbits to lead acetate resulted in negative effects on the growth performance and altered the haematological and biochemical parameters, in addition to its adverse impact on cytological and molecular characterization of animals.
TL;DR: Evaluation of Zingiber officinale as mitigating measure against Pb induced biochemical and cytogenic toxicity in albino rats was investigated and results suggest that Z. Officinale roots might contain therapeutic potential that can ameliorate the hazard effect of lead acetate poison.
Abstract: Exposure to toxic elements is greatly unavoidable in our daily activities due to several routes of coming in contact with these elements. Thus lead (Pb), is one of the major causes of health hazard...
TL;DR: Evaluated the effects of acute and chronic Pb acetate exposure on serotoninergic and dopaminergic systems within the dorsal raphe nucleus, regarding motor activity and anxiety behaviours and demonstrated that a long term Pb-exposure, but not an acute lead intoxication, induced behavioural alterations including, hyperactivity, and anxiogenic like-effects.
TL;DR: It is indicated that chitosan-P.
Abstract: The current study was carried out to evaluate the antioxidant and anti-caspase 3 activity of chitosan-Pinus merkusii nanoparticle in against lead acetate-induced nephrotoxicity in rats. chitosan-P. merkusii nanoparticle was characterized by dynamic light scattering (DLS) and scanning electron microscope (SEM). The male rats were divided into control group (rats were given with distilled water), lead acetate group (rats were injected with lead acetate 15 mg/kg BW i. p), and the treatment group (rats were given the chitosan-P. merkusii nanoparticle 150 mg, 300 mg, 600 mg/kg BW orally and were injected with lead acetate 15 mg/kg BW). The rats blood samples were measured levels of blood urea nitrogen (BUN) and creatinine. The kidney tissues were collected to evaluate the malondialdehyde (MDA), superoxide dismutase (SOD), and glutathione peroxidase (GPx). Histological to evaluate renal damage, and immunohistochemical to analyze the expression of caspase 3. The results showed that DLS showed the size of chitosan-P. merkusii nanoparticle was 165.9 ± 24.18 nm. SEM images of the chitosan-P. merkusii nanoparticles showed an irregular shape and its the rough surface. Administration of lead acetate resulted in a significant increase in levels of the BUN, creatinine, MDA level, caspase 3 expression, and a decrease in SOD and GPx were compared with the control group. Treatment with the chitosan-P. merkusii nanoparticle 600 mg/kg BW significantly decreased the elevated BUN, creatinine, MDA levels, caspase 3 expression and also increase in SOD and GPx as compared to lead acetate group. The lead acetate induced loss of the normal structure of renal cells and necrosis, whereas treated with chitosan-P. merkusii nanoparticle improved renal cell necrosis. This study indicates that chitosan-P. merkusii nanoparticles appeared to be a promising agent for protection against lead-induced nephrotoxicity through increasing antioxidant and inhibiting caspase 3 expression.
TL;DR: The findings showed that EBN could ameliorate the detrimental effects of LA toxicity on the uterus possibly by enhancing enzymatic antioxidant (SOD) activity as well as expressions of EGF, VEGF, and PCNA with cell proliferation roles.
Abstract: Aim This study aimed to evaluate the protective effect of edible bird's nest (EBN) supplement on the uteri of rats exposed to lead acetate (LA) toxicity. Materials and Methods Five treatment groups were established as follows: Group 1 (C), which was given distilled water; Group 2 (T0), which was administered with LA (10 mg/kg body weight [BW]); and Groups 3 (T1), 4 (T2), and 5 (T3), which were given LA (10 mg/kg BW) plus graded concentrations of 30, 60, and 120 mg/kg BW of EBN, respectively. Rats were euthanized at week 5 to collect blood for superoxide dismutase (SOD) assay, and uterus for histomorphological study and expression analyses of epidermal growth factor (EGF), vascular endothelial growth factor (VEGF), and proliferating cell nuclear antigen (PCNA). Results Results revealed that LA causes destruction of uterine lining cells and necrosis of uterine glands of exposed rats without EBN supplement while the degree of damage decreased among EBN treated groups; T3 showed the highest ameliorating effect against LA toxicity, as well as an increased number of uterine glands. Increased levels of SOD were also achieved in EBN supplemented groups than the controls. Results of immunohistochemistry showed significantly higher expressions of EGF, VEGF, and PCNA levels (p<0.05) in T3 compared to other treatments. EBN maintained upregulation of antioxidant - reactive oxygen species balance. Conclusion The findings showed that EBN could ameliorate the detrimental effects of LA toxicity on the uterus possibly by enhancing enzymatic antioxidant (SOD) activity as well as expressions of EGF, VEGF, and PCNA with cell proliferation roles.
TL;DR: Subchronic lead intoxication affects the peak rate of force development and relaxation properties of cardiac muscle contracting in isotonic/physiological regimes rather than the total amount of mechanical work, which may reflect adaptive changes in the myocardial function under decreased contractility.
26 Dec 2019
TL;DR: Activation of lipid peroxidation (LPO) products in the blood of rats under lead-cadmium loading is detected, as indicated by the growth of intermediate and final products in comparison with the group of intact animals.
Abstract: Lipid peroxidation is a form of tissues respiration. This process is characteristic of normal tissues and occurs, as a rule, after the construction of lipid membrane structures, their updates and during the biosynthesis of many hormones. However, free radical oxidation can be activated in an unfavorable environmental situation, since in our case it happened under the action of Cadmium and Lead. The purpose of the work was to investigate the Cadmium and Lead effects on the lipid peroxidation processes intensity in rats. The experiments were carried out on 200 – 220 g male “Wistar” rats, from which 4 groups of animals were formed: 1) control group – animals were administered drinking water through a metal probe in bulk, which is equivalent to the volume of aqueous salt solution Cd2+ і Pb2+; 2) experimental group 1 – animals were administered 0.029 % an aqueous solution of cadmium chloride in a dose 4.0 mg/kg; 3) experimental group 2 – animals were administered 16.6 % aqueous lead acetate solution at a dose 200 mg/kg; 4) experimental group 3 – animals were administered 16.6 % aqueous lead acetate solution at a dose 100 mg/kg and 0.029 % an aqueous solution of cadmium chloride in a dose 2.0 mg/kg. Throughout the experiment, rats were kept in a balanced diet containing all the necessary components, the animals were given drinking water without restrictions from 0.2 liter glass bowls. Based on our research, we detected activation of lipid peroxidation (LPO) products in the blood of rats under lead-cadmium loading, as indicated by the growth of intermediate and final products in comparison with the group of intact animals. Probable level increase of LPO products was observed from the first day of the experiment. For the 7th day of the experiment, the level of diene conjugates in the blood of the third experimental group increased by 88.9 %, and the level of Thiobarbituric acid reactive substances (TBARS) increased by 31.8 %. At 14 and 21 days of the experiment, the level of of LPO products in the rats blood under the lead-cadmium load was the highest. These changes in the LPO products level indicate an increase in the intensity of radical formation processes. Peroxide oxidation forms, at almost all stages of its course, a number of products that result from the interaction of free radicals with each other and with biological macromolecules.
TL;DR: Co-administration of Solanum anomalum significantly reversed the effect of lead with restoration of histoarchitecture of the testes and may be a protective modulator of lead -induced testicular injury.
Abstract: Objective: This study has investigated the protective role of a natural alternative, Solanum anomalum fruit extract in lead induced testicular toxicity in male albino rats. Materials and methods: Twenty-four mature male albino rats were used, divided into four groups of six rats per group. Group 1 (control rats) were given distilled water (10ml/kg), group 2 received lead acetate solution 60mg/kg, group 3 received lead acetate (60mg/kg) followed by Solanum anomalum (452mg/kg) and group 4 rats were given lead acetate (60mg/kg) followed by Solanum anomalum (678mg/kg) by oral gavage daily for 28 days. Results: Lead treated group showed significant increase in Malondialdehyde MDA (1.58 ± 0.09 to 1.90 ± 0.17 µmol/L of plasma) and decreases in Superoxide dismutase SOD, glutathione peroxidase (482.85 ± 53.43 to 247.18 ± 70.40 U/L of blood), total glutathione (1.11 ± 0.03 to 0.56 ± 0.31 ng/µL) (144.80 ± 7.00 and 122.39 ± 4.63 U/ml of blood), epididymal sperm reserve, testicular sperm count, % sperm motility and % sperm viability. Conclusion: Co-administration of Solanum anomalum significantly reversed the effect of lead with restoration of histoarchitecture of the testes. Solanum anomalum may be a protective modulator of lead -induced testicular injury.
TL;DR: In this paper, the authors proposed a method to control the morphology and grain size of lead acetate-based perovskites along with a dynamic solvent-vapor annealing treatment.
Abstract: Lead acetate-based perovskite solar cells (PSCs) have shown their superiority in terms of controlled grain growth and replacement of traditional lead halides, which is critical for their large-scale commercial applications; however, the lack of control on the grain quality of lead acetate-based perovskite still creates risks such as unwanted defects, pinholes and grain boundaries. Herein, we proposed a reliable method to control the morphology and grain size of lead acetate-based perovskites along with a dynamic solvent-vapor annealing treatment; it was found that the vapors of N,N-dimethylformamide (DMF) assisted in the growth of perovskite grains and facilitated the increase in grain size. Using optimized DMF volume, the fabricated planar PSCs with the structure FTO/TiO2/perovskite/spiro-OMeTAD/Ag achieved the highest power conversion efficiency (PCE) of 13.71%, which was 23.8% higher than that of the controlled device. Moreover, the hysteresis effect was negligible. The results demonstrate that the solvent vapor-assisted crystal growth process is a simple and facile way to improve the quality of lead acetate-based perovskites and increase their performance.
TL;DR: The results suggested that spirulina was more effective at providing protection against Pb-induced reproductive damage in rats than garlic, indicating the beneficial role of Spirulina in improvement of spermatogenesis and steroidogenesis after lead exposure.
TL;DR: The results suggested that the extract has protective role against lead reproductive toxicity and protected the organs against the lead acetate.
TL;DR: Results suggest that ethyl acetate fraction of Z. officinale extract attenuates lead-induced brain damage and might have therapeutic potential as a supplement that can be applied in lead poisoning.
TL;DR: It can be concluded that chitosan-Pinus merkusii nanoparticle protects rat testis from oxidative damage and apoptosis caused by lead acetate, through increasing antioxidant and inhibiting caspase 3 expression.
TL;DR: Western blot analysis showed inflammation-related protein expression in mitogen-activated protein kinase and Nrf2 pathways was affected in the HZK- and CHL-treated groups, suggesting HZk andCHL extracts exerted antioxidant and anti-inflammatory effects against lead acetate-induced hepatotoxicity.
Abstract: In the present study, the protective effects of Hizikia fusiforme and Chlorella sp. extracts on lead acetate-induced hepatotoxicity were investigated. Hepatic damage was induced in rats by intraperitoneal (i.p.) injection of lead acetate and the protective effects of H. fusiforme (HZK) and Chlorella sp. (CHL) extracts on lead acetate-induced hepatic damage in rat liver were examined. The results revealed significantly increased glutamic oxaloacetate and glutamic pyruvic transaminase levels in the group treated with lead acetate only (Pb group); oral administration of HZK and CHL extracts tended to decrease the enzyme levels similar to those observed in the control group. Regarding antioxidant enzymes, superoxide dismutase activity was increased in the Pb group and decreased in a concentration-dependent manner in the HZK- and CHL-treated groups. Glutathione levels were increased in a concentration-dependent manner in the HZK- and CHL-treated groups. There was no significant difference in catalase activity. Western blot analysis showed inflammation-related protein expression in mitogen-activated protein kinase and Nrf2 pathways was affected in the HZK- and CHL-treated groups. Therefore, HZK and CHL extracts exerted antioxidant and anti-inflammatory effects against lead acetate-induced hepatotoxicity. Development of functional health foods containing HZK and CHL extracts, which have hepatoprotective effects against inhaled lead acetate, should be considered.