ABSTRACT
Cadmium (Cd) is one of the major toxicants, which affects human health through occupational and environmental exposure. In the current study, we evaluated the protective effects of morel mushrooms against Cd-induced reproductive damages in rats. For this purpose, 30 male rats were divided into 6 groups (n=5/group), the first group served as the control group, second group was treated with an intraperitoneal (i.p) injection of 1 mg/kg/day of Cd. Third and fourth groups were co-treated with 1 mg/kg/day of Cd (i.p) and 10 and 20 mg/kg/day of morel mushroom extract (orally) respectively. The final 2 groups received oral gavage of 10 and 20 mg/kg/day of morel mushroom extract alone. After treatment for 17 days, the animals were euthanized, and testes and epididymis were dissected out. One testis and epididymis of each animal were processed for histology, while the other testis and epididymis were used for daily sperm production (DSP) and comet assay. Our results showed that Cd and morel mushrooms have no effect on animal weight, but Cd significantly decreases the DSP count and damages the heritable DNA which is reversed in co-treatment groups. Similarly, the histopathological results of testes and epididymis show that morel mushrooms control the damage to these tissues. Whereas the morel mushroom extract alone could enhance the production of testosterone. These results conclude that morel mushrooms not only control the damage done by Cd, but it could also be used as a protection mechanism for heritable DNA damage.
O cádmio (Cd) é um dos principais tóxicos, que afeta a saúde humana por meio da exposição ocupacional e ambiental. No presente estudo, avaliamos os efeitos protetores dos cogumelos morel contra os danos reprodutivos induzidos pelo Cd em ratos. Para tanto, 30 ratos machos foram divididos em 6 grupos (n = 5 / grupo); o primeiro grupo serviu de controle, o segundo grupo foi tratado com injeção intraperitoneal (i.p) de 1 mg / kg / dia de Cd. O terceiro e o quarto grupos foram cotratados com 1 mg / kg / dia de Cd (i.p) e 10 e 20 mg / kg / dia de extrato de cogumelo morel (por via oral), respectivamente. Os dois grupos finais receberam gavagem oral de 10 e 20 mg / kg / dia de extrato de cogumelo morel sozinho. Após o tratamento por 17 dias, os animais foram sacrificados e os testículos e o epidídimo foram dissecados. Um testículo e epidídimo de cada animal foram processados para histologia, enquanto o outro testículo e epidídimo foram usados para produção diária de esperma (DSP) e ensaio cometa. Nossos resultados mostraram que os cogumelos Cd e morel não têm efeito sobre o peso do animal, mas o Cd diminui significativamente a contagem de DSP e danifica o DNA hereditário, que é revertido em grupos de cotratamento. Da mesma forma, os resultados histopatológicos dos testículos e do epidídimo mostram que os cogumelos morel controlam os danos a esses tecidos. Considerando que o extrato de cogumelo morel sozinho pode aumentar a produção de testosterona. Esses resultados concluem que os cogumelos morel não apenas controlam os danos causados pelo Cd, mas também podem ser usados como um mecanismo de proteção para danos hereditários ao DNA.
Subject(s)
Male , Animals , Rats , DNA , Cadmium/toxicity , Spermatogenesis/drug effects , Reproduction/drug effects , Reproduction/genetics , PhytotherapyABSTRACT
Abstract Cadmium (Cd) is one of the major toxicants, which affects human health through occupational and environmental exposure. In the current study, we evaluated the protective effects of morel mushrooms against Cd-induced reproductive damages in rats. For this purpose, 30 male rats were divided into 6 groups (n=5/group), the first group served as the control group, second group was treated with an intraperitoneal (i.p) injection of 1 mg/kg/day of Cd. Third and fourth groups were co-treated with 1 mg/kg/day of Cd (i.p) and 10 and 20 mg/kg/day of morel mushroom extract (orally) respectively. The final 2 groups received oral gavage of 10 and 20 mg/kg/day of morel mushroom extract alone. After treatment for 17 days, the animals were euthanized, and testes and epididymis were dissected out. One testis and epididymis of each animal were processed for histology, while the other testis and epididymis were used for daily sperm production (DSP) and comet assay. Our results showed that Cd and morel mushrooms have no effect on animal weight, but Cd significantly decreases the DSP count and damages the heritable DNA which is reversed in co-treatment groups. Similarly, the histopathological results of testes and epididymis show that morel mushrooms control the damage to these tissues. Whereas the morel mushroom extract alone could enhance the production of testosterone. These results conclude that morel mushrooms not only control the damage done by Cd, but it could also be used as a protection mechanism for heritable DNA damage.
Resumo O cádmio (Cd) é um dos principais tóxicos, que afeta a saúde humana por meio da exposição ocupacional e ambiental. No presente estudo, avaliamos os efeitos protetores dos cogumelos morel contra os danos reprodutivos induzidos pelo Cd em ratos. Para tanto, 30 ratos machos foram divididos em 6 grupos (n = 5 / grupo); o primeiro grupo serviu de controle, o segundo grupo foi tratado com injeção intraperitoneal (i.p) de 1 mg / kg / dia de Cd. O terceiro e o quarto grupos foram cotratados com 1 mg / kg / dia de Cd (i.p) e 10 e 20 mg / kg / dia de extrato de cogumelo morel (por via oral), respectivamente. Os dois grupos finais receberam gavagem oral de 10 e 20 mg / kg / dia de extrato de cogumelo morel sozinho. Após o tratamento por 17 dias, os animais foram sacrificados e os testículos e o epidídimo foram dissecados. Um testículo e epidídimo de cada animal foram processados para histologia, enquanto o outro testículo e epidídimo foram usados para produção diária de esperma (DSP) e ensaio cometa. Nossos resultados mostraram que os cogumelos Cd e morel não têm efeito sobre o peso do animal, mas o Cd diminui significativamente a contagem de DSP e danifica o DNA hereditário, que é revertido em grupos de cotratamento. Da mesma forma, os resultados histopatológicos dos testículos e do epidídimo mostram que os cogumelos morel controlam os danos a esses tecidos. Considerando que o extrato de cogumelo morel sozinho pode aumentar a produção de testosterona. Esses resultados concluem que os cogumelos morel não apenas controlam os danos causados pelo Cd, mas também podem ser usados como um mecanismo de proteção para danos hereditários ao DNA.
ABSTRACT
Cadmium (Cd) is one of the major toxicants, which affects human health through occupational and environmental exposure. In the current study, we evaluated the protective effects of morel mushrooms against Cd-induced reproductive damages in rats. For this purpose, 30 male rats were divided into 6 groups (n=5/group), the first group served as the control group, second group was treated with an intraperitoneal (i.p) injection of 1 mg/kg/day of Cd. Third and fourth groups were co-treated with 1 mg/kg/day of Cd (i.p) and 10 and 20 mg/kg/day of morel mushroom extract (orally) respectively. The final 2 groups received oral gavage of 10 and 20 mg/kg/day of morel mushroom extract alone. After treatment for 17 days, the animals were euthanized, and testes and epididymis were dissected out. One testis and epididymis of each animal were processed for histology, while the other testis and epididymis were used for daily sperm production (DSP) and comet assay. Our results showed that Cd and morel mushrooms have no effect on animal weight, but Cd significantly decreases the DSP count and damages the heritable DNA which is reversed in co-treatment groups. Similarly, the histopathological results of tests and epididymis show that morel mushrooms control the damage to these tissues. Whereas the morel mushroom extract alone could enhance the production of testosterone. These results conclude that morel mushrooms not only control the damage done by Cd, but it could also be used as a protection mechanism for heritable DNA damage.
O cádmio (Cd) é um dos principais tóxicos, que afeta a saúde humana por meio da exposição ocupacional e ambiental. No presente estudo, avaliamos os efeitos protetores dos cogumelos morel contra os danos reprodutivos induzidos pelo Cd em ratos. Para tanto, 30 ratos machos foram divididos em 6 grupos (n = 5 / grupo); o primeiro grupo serviu de controle, o segundo grupo foi tratado com injeção intraperitoneal (i.p) de 1 mg / kg / dia de Cd. O terceiro e o quarto grupos foram cotratados com 1 mg / kg / dia de Cd (i.p) e 10 e 20 mg / kg / dia de extrato de cogumelo morel (por via oral), respectivamente. Os dois grupos finais receberam gavagem oral de 10 e 20 mg / kg / dia de extrato de cogumelo morel sozinho. Após o tratamento por 17 dias, os animais foram sacrificados e os testículos e o epidídimo foram dissecados. Um testículo e epidídimo de cada animal foram processados para histologia, enquanto o outro testículo e epidídimo foram usados para produção diária de esperma (DSP) e ensaio cometa. Nossos resultados mostraram que os cogumelos Cd e morel não têm efeito sobre o peso do animal, mas o Cd diminui significativamente a contagem de DSP e danifica o DNA hereditário, que é revertido em grupos de cotratamento. Da mesma forma, os resultados histopatológicos dos testículos e do epidídimo mostram que os cogumelos morel controlam os danos a esses tecidos. Considerando que o extrato de cogumelo morel sozinho pode aumentar a produção de testosterona. Esses resultados concluem que os cogumelos morel não apenas controlam os danos causados pelo Cd, mas também podem ser usados como um mecanismo de proteção para danos hereditários ao DNA.
Subject(s)
Animals , Male , Rats , Cadmium/toxicity , Agaricales , Ascomycota , Spermatozoa , TestisABSTRACT
The present study was undertaken to explore the ameliorative potential of aqueous extract of Aframomum melegueta (AM) on cadmium-induced hepatic damage in rats. Toxicity was induced by daily administration of 200 mg/L cadmium: Cd (Cd as CdCl2) in the animals’ main drinking water for 21 days. Lipid peroxidation (LPO), catalase (CAT), glutathione peroxidase (GPx) and superoxide dismutase (SOD) activities were determined in the liver while total protein, albumin, direct bilirubin and total bilirubin concentration as well as alanine aminotransferase (ALT) and aspartate aminotransferase (AST) activities were monitored in the serum and histological examination was carried out. Exposure to cadmium resulted in various alterations in all the evaluated parameters. Treatment with AM (200 or 400 mg/kg bw) extract showed a significant (P <0.05) reversal effect that mitigated the deleterious effect of cadmium. Results of the histological examination also support the above findings. The results suggest that aqueous extracts of A. melegueta when administered orally, could ameliorate cadmium-associated oxidative stress in male Wistar rats in a dose dependant manner via its free radical-scavenging mechanism which could be linked to the synergetic effects between the bioactive constituents present in the extract.
ABSTRACT
Cadmium application inhibited various growth and biochemical parameters in seedlings of five cultivars of Brassica juncia L. with different magnitude at lower Cd supply, however, at higher metal applications the variation in Cd toxicity ranged with minor differences. The seedling vigour index (SVI) was inhibited more severely in Gangotri (62.25% over control) and least in Pusa Jai Kisan (8.95%) at 1.0 mM CdCl2. The SVI of all five mustard cultivars, however, severely inhibited (84.29-91.80%) at 5.0 mM Cd. The root and shoot elongation in 7 days old seedlings were inhibited by 32.39-40.38 and 11.83-56.40% respectively at 1.0 mM CdCl2, whereas the varietal differences in root and shoot elongation were 76.71-82.47 and 71.57-78.91 respectively at 5.0 mM CdCl2. The genotypic differences at lower Cd level were more pronounced in shoot elongation than that in the root elongation. The dry weight and moisture content of the seedlings, however, does not show much varietal differences even at lower Cd level, though the Cd toxicity increased at higher level of Cd application. The metal tolerance index (MTI) and % phytotoxicity of 3 days old seedlings ranged between 43.30-98.37 and 1.63-56.70% respectively at 1.0 mM CdCl2 for different mustard genotypes, whereas at 5.0 mM CdCl2 these factors ranged between 12.26- 20.92 and 80.08-87.74% respectively. The varietal differences of MTI and % phytotoxicity was, however, less pronounced at all the metal levels when the seedling attained an age of 7 days. A similar trend of genotypic variation was noticed in Cd accumulation in the seedlings at lower and higher levels of Cd supply to the seedlings. Amongst some biochemical parameters e.g. photosynthetic pigments, carbohydrates and proteins in the leaves, the photosynthetic pigments i.e. chlorophylls and carotenoids were decreased more drastically. The carbohydrate content of leaves, however, was the least affected component. Our data indicate that the differential toxicity of cadmium to Indian mustard genotypes was dependent on the level of contamination and growth phases.
ABSTRACT
Cadmium is an important toxic environmental heavy metal. Several studies have demonstrated that a major site of cadmium toxicity in humans and in other animals is the proximal tubule of the kidney. A well established model for nefrotoxicity is the use of in vitro technique with proximal tubule epithelial cell lines, as LLC-PK1. Herein, we have the intention to study the possible protective effect of high diluted CdCl2 solutions. In a blinding way, LLC-PK1 cells were pre-treated with high diluted cadmium chloride in the potencies 10 cH, 15 cH and 20cH. After 4 days, these cells have received CdCl2 in a pre-determined toxic concentration. The cell viability was assessed by MTT assay. We have identified a protective effect of two CdCl2 high diluted solutions, 10 cH and 20 cH, when cells were intoxicated by sublethal CdCl2 concentration. The results indicate that probably the high dilutions have an expressive action on cells in sublethal intoxication.
O Cádmio é um contaminante ambiental relevante. Muitos estudos demonstram que o sítio de toxicidade em humanos e outros animais é o túbulo proximal do rim. Um modelo bem estabelecido para nefrotoxicidade é o uso de técnicas in vitro com linhagens de células epiteliais do túbulo proximal, conhecidas por LLC-PK1. Assim, nossa proposta foi a de estudar os eventuais efeitos protetores de uma alta diluição de CdCl2. Em um ensaio cego, células LLC_PK1 foram pré-tratadas com altas diluições de cloreto de cádmio nas diluições 10 cH, 15 cH e 20 cH. Após 4 dias, estas células receberam CdCl2 em uma concentração tóxica, previamente deteminada. A viabilidade cellular foi estudada por ensaios MTT. Observamos um efeito protetor para duas altas diluições de CdCl2, 10 cH e 20 cH, quando as células foram intoxicadas por concentrações subletais de CdCl2. Estes resultados indicam a possibilidade de que altas diluições tenham ação expressiva em células, em intoxicações subletais.
El Cádmio es un metal pesado com relevante acción tóxica en el medio ambiente. Varios estudios han demostrado que un sitio importante de la toxicidad del cadmio en los humanos y en otros animales es el túbulo proximal del riñón. Un modelo bien establecido de nefrotoxicidad es el uso de la técnica in vitro con células epiteliales del túbulo proximal, como las LLC-PK1. Estudiamos el posible efecto protector de soluciones altamente diluidas de CdCl2. Com uma metodologia em ciego, las células LLC-PK1 fueron pre-tratados con cloruro de cadmio altamente diluídos en las potencias 10 cH, 15 cH y 20 cH. Después de 4 días, estas células han recibido CdCl2 en una concentración tóxica predeterminado. La viabilidad celular se evaluó por el ensayo MTT. Hemos identificado un efecto protector de dos soluciones de altamente diluída de CdCl2, 10 cH y 20 cH, cuando las células se intoxicaron por concentración CdCl2 subletales. Los resultados indican que probablemente las altas diluciones tienen una acción expresiva en las células, en la intoxicación subletal.
Subject(s)
High Potencies , Cadmium Chloride , Cadmium , LLC-PK1 Cells , Isotherapy , ToxicityABSTRACT
Cadmium (Cd), is an environmental and industrial pollutant that affects the male reproductive system. Cd induces its effect by affecting tissue antioxidant enzyme systems. Green tea extract (GTE) is an antioxidant and free radicals scavenger and has a chelating property. The purpose of this study was to investigate the protective effect of GTE against testes damage induced by Cd. Four groups of male rats, were utilized as following: Controls, GTE treated, Cd treated and Cd + GTE, treated rats at the same doses. The rats received GTE and or Cd orally in drinking water. After 5 weeks, the animals were sacrificed and testes were removed for microscopic and Biochemical evaluation. The levels of lipid peroxides (LPO) and glutathione (GSH) were detected in the tissue homogenates of rat testes. The current study showed marked morphological changes in the form of swelling, congestion, hemorrhage and necrosis in testes of rats treated with Cd alone. However, the rats treated with Cd+GTE showed milder edema, congestion and minute foci of necrosis in the testes. The LPO levels were significantly higher as compared to control and of GSH were significantly lower in Cd-treated rats but when GTE was co-administrated with Cd, there was an effective reduction in oxidative stress as shown by a significant rise of GSH level. In conclusion, the rats received GTE + Cd could enhance antioxidant/ detoxification system which consequently reduced the oxidative stress in rat testes. The beneficial effect of GTE is thus potentially reducing Cd toxicity and tissue damage.
El cadmio (Cd), es un contaminante del medio ambiente e industrial que afecta al sistema reproductivo masculino. Cd induce su efecto por afección de los sistemas enzimáticos antioxidantes de los tejidos. El extracto de té verde (ETV) es un antioxidante y buscador de radicales libres y tiene una propiedad quelante. El objetivo de este estudio fue investigar el efecto protector de ETV contra daños provocado por Cd a los testículos. Cuatro grupos de ratas macho, se utilizaron: Controles, tratados con ETV, tratados con Cd y tratados con Cd + ETV, todas las ratas tratadas con las mismas dosis. Las ratas recibieron ETV o Cd por vía oral en el agua potable. Después de 5 semanas, los animales fueron sacrificados y los testículos fueron retirados para la evaluación microscópica y bioquímica. Los niveles de peróxidos lípidos (LPO) y de glutation (GSH) fueron detectados en el tejido homogenizado de rata testículos. El estudio demostró marcados cambios morfológicos como inflamación, congestión, hemorragia y necrosis en los testículos de las ratas tratadas solamente con Cd. Sin embargo, las ratas tratadas con Cd + ETV mostraron leves signos de edema, congestión y focos de necrosis en los testículos. Los niveles de LPO fueron significativamente mayores en comparación con el control y la de GSH fue significativamente menor en las ratas tratadas con Cd, pero cuando ETV fue co-administrado con Cd, hubo una reducción efectiva en el estrés oxidativo, como lo demuestra el aumento significativo del nivel de GSH. En conclusión, las ratas recibieron GTE + Cd que podría aumentar el sistema antioxidante / desintoxicación, por tanto, reducir el estrés oxidativo en los testículos de ratas. El efecto beneficioso de GTE es reducir la toxicidad y el daño tisular causado Cd.
Subject(s)
Animals , Male , Rats , Cadmium/toxicity , Oxidative Stress , Plant Extracts/pharmacology , Tea , Testis , Testis/pathology , Antioxidants/pharmacology , Glutathione/metabolism , Lipid Peroxides/metabolism , Rats, Sprague-DawleyABSTRACT
Metallothionein (MT) is a cadmium binding protein that played major' roles in protective mechanism for cadmium toxicity. In the present study, competitive ELISA was established to assay the MT expression utilizing monospecific antibody which was generated against MT-L A total of 10 Sprague-Dawley rats was injected with CdCl2 for two weeks to induce MT. The cytosolic fraction of rat liver was obtained by differential centrifugation. Two major MT isozymes (MT-I & MT-II) at ca. 10 kDa were purified by Sephadex G-75 gel filtration followed by DEAE-Trisacryl-M anion exchange column chromatogra-phy, respectively. Two rabbits were immunized 4 times consecutively with the conjugate of purified MT-L The sera were collected by heart puncture. When immunoblot was carried out, the immunized rabbit sera (anti-MT-I) exhibited specific immunoreactive band at MT-I while showed any cross reactions neither with MT-II nor with other cytosolic proteins.. By chequerboard titration using the monospecific antibody, the competitive ELISA was established. The dose-dependent relationship was observed between anti-MT-I antibody and the amount of MT in biological samples (r(2)=O.9980). These results suggested strongly that competitive ELISA is a simple, rapid and reproducible method for screening cadmium exposure.
Subject(s)
Animals , Rabbits , Rats , Cadmium Chloride , Cadmium , Carrier Proteins , Centrifugation , Chromatography, Gel , Cross Reactions , Cytosol , Enzyme-Linked Immunosorbent Assay , Heart , Isoenzymes , Liver , Mass Screening , Metallothionein , Punctures , Rats, Sprague-DawleyABSTRACT
Metallothionein (MT) is a cadmium binding protein that played major' roles in protective mechanism for cadmium toxicity. In the present study, competitive ELISA was established to assay the MT expression utilizing monospecific antibody which was generated against MT-L A total of 10 Sprague-Dawley rats was injected with CdCl2 for two weeks to induce MT. The cytosolic fraction of rat liver was obtained by differential centrifugation. Two major MT isozymes (MT-I & MT-II) at ca. 10 kDa were purified by Sephadex G-75 gel filtration followed by DEAE-Trisacryl-M anion exchange column chromatogra-phy, respectively. Two rabbits were immunized 4 times consecutively with the conjugate of purified MT-L The sera were collected by heart puncture. When immunoblot was carried out, the immunized rabbit sera (anti-MT-I) exhibited specific immunoreactive band at MT-I while showed any cross reactions neither with MT-II nor with other cytosolic proteins.. By chequerboard titration using the monospecific antibody, the competitive ELISA was established. The dose-dependent relationship was observed between anti-MT-I antibody and the amount of MT in biological samples (r(2)=O.9980). These results suggested strongly that competitive ELISA is a simple, rapid and reproducible method for screening cadmium exposure.