scholarly journals Morphological comparative assessment of in vivo 2-week oral exposure of silver nanoparticles and silver sulfate on the mice liver

2019 ◽  
Vol 95 (9) ◽  
pp. 899-902
Author(s):  
Natalia N. Belyaeva ◽  
L. P. Sycheva
Keyword(s):  
Silver Nanoparticles ◽  
Comparative Evaluation ◽  
Comparative Assessment ◽  
Oral Exposure ◽  
Silver Sulfate ◽  
Mice Liver ◽  
The Impact ◽  
Functional Indices ◽  
Different Doses

Currently the problem of the impact of nanoparticles and nanomaterials on human health remains to be poorly understood. As in our studies of the impact of silver nanoparticles on rats liver as well in works of other researchers there were investigated morphofunctional indices under peroral exposure. Although all researchers took different sizes, doses and concentrations of silver nanoparticles, various exposure time and different stabilizers, the same effects had been obtained, which, however, were occurred under both different doses and time of exposure. However, it was interesting to compare the impact of silver nanoparticles with reference substance - silver sulfate on the mice liver with the previously evaluated effect produced on the rats ’ liver. By ourselves there was executed the morphological comparative evaluation of in vivo oral 2-weeks exposure of 4 concentrations (0.1; 5; 50 and 500 mg/l) of silver nanoparticles with size of 14 nm, stable arabian gum 1:7 by weight, and of 4 similar concentrations of silver sulfate on the liver of male mice СВАхС57В1/6 weighing 25-35g. 2 groups were considered as control: intact mice and mice received gum in water. Results of the exposure were assessed according to 10 morphological and functional indices. The impact of nanosilver was shown to initiate from its concentration of 50 mg/l and to express in the gain of the index of alteration of the cytoplasm of hepatocytes with the increasing in both severity of steatosis and the number of micronecroses, persisting at the same level at concentrations of 500 mg/l and with the elevation of the index of alteration of nuclei of hepatocytes, while the similar effect develops under the influence of silver sulfate at a concentration of 500 mg/l only. The remaining investigated morphofunctional indices did not differ significantly in all groups of mice. Unlike previously executed studies on rats, mice appeared to be sensitive to the effects of nano-silver more than to silver sulfate.

scholarly journals STRUCTURAL-FUNCTIONAL IN VIVO EVALUTION OF THE 2-WEEKS ORAL EXPOSURE OF SILVER NANOPARTICLES AND SILVER SULFATE ON THE MICE TESTICLE

2019 ◽  
Vol 96 (10) ◽  
pp. 961-965
Author(s):  
Natalia N. Belyaeva ◽  
V. S. Zhurkov ◽  
L. P. Sycheva
Keyword(s):  
Silver Nanoparticles ◽  
Leydig Cells ◽  
Oral Exposure ◽  
Similar Concentration ◽  
In Vivo Evaluation ◽  
Silver Sulfate ◽  
Genetic Continuity ◽  
The One ◽  
The Impact

During the study of the effect of nanoparticles researches aimed at finding out the consequences of their influence on the structural and functional integrity of germ cells, which ensure genetic continuity must occupy the one of the central places. However, in the assessment of the impact of nanosilver on many organs its effect on the testicles in vivo was not studied. That’s why, the aim of the study was to assess in vivo the effect of nanosilver and silver sulfate on the testicle and to determine the correlation between cytogenetic and cytotoxic parameters. The comparative morphological in vivo evaluation of 2-weeks oral exposure of 4 concentrations (0.1; 5; 50 and 500 mg/l) of silver nanoparticles with size of 14.0 nm, stable arabian gum 1:7 by weight, and of 4 similar concentration of silver sulfate on the testicle of mice. The effect of silver nanoparticles and silver sulfate at the concentration of 500 mg/l is shown to lead to a significant increasing of destructured tubules with undifferentiated and depleted spermatic epithelium, significant decreasing in the number of Leydig cells and decreasing trend in the number of spermatidas, spermatozoons and Sertoli cells, which indicates to the inhibition of spermatogenesis in equal measure for both silver nanoparticles and silver sulfate. The pronounced correlation between the increase in the number of spermatidas with apoptosis and decreasing in the number of tubules with spermatozoon, indicating to the mechanism of gonadotoxic action.

Curcumin-containing Silver Nanoparticles prevent carbon tetrachlorideinduced hepatotoxicity in mice

2020 ◽  
Vol 23 ◽  
Author(s):  
Hossam Ebaid ◽  
Mohamed Habila ◽  
Iftekhar Hassan ◽  
Jameel Al-Tamimi ◽  
Mohamed S. Omar ◽  
...  
Keyword(s):  
Dna Damage ◽  
Silver Nanoparticles ◽  
Nuclear Dna ◽  
Liquid Paraffin ◽  
Tail Length ◽  
Hepatic Tissue ◽  
Tissue Destruction ◽  
Group 2 ◽  
The Impact

Background: Hepatotoxicity remains an important clinical challenge. Hepatotoxicity observed in response to toxins and hazardous chemicals may be alleviated by delivery of the curcumin in silver nanoparticles (AgNPs-curcumin). In this study, we examined the impact of AgNPs-curcumin in a mouse model of carbon tetrachloride (CCl4)-induced hepatic injury. Methods: Male C57BL/6 mice were divided into three groups (n=8 per group). Mice in group 1 were treated with vehicle control alone, while mice in Group 2 received a single intraperitoneal injection of 1 ml/kg CCl4 in liquid paraffin (1:1 v/v). Mice in group 3 were treated with 2.5 mg/kg AgNPs-curcumin twice per week for three weeks after the CCl4 challenge. Results: Administration of CCL4 resulted in oxidative dysregulation, including significant reductions in reduced glutathione and concomitant elevations in the level of malondialdehyde (MDA). CCL4 challenge also resulted in elevated levels of serum aspartate transaminase (AST) and alanine transaminase (ALT); these findings were associated with the destruction of hepatic tissues. Treatment with AgNPs-curcumin prevented oxidative imbalance, hepatic dysfunction, and tissue destruction. A comet assay revealed that CCl4 challenge resulted in significant DNA damage as documented by a 70% increase in nuclear DNA tail-length; treatment with AgNPs-curcumin inhibited the CCL4-mediated increase in nuclear DNA tail-length by 34%. Conclusion: Administration of AgNPs-curcumin resulted in significant antioxidant activity in vivo. This agent has the potential to prevent the hepatic tissue destruction and DNA damage that results from direct exposure to CCL4.

scholarly journals The potential renal toxicity of silver nanoparticles after repeated oral exposure and its underlying mechanisms

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Hamed Nosrati ◽  
Manijeh Hamzepoor ◽  
Maryam Sohrabi ◽  
Massoud Saidijam ◽  
Mohammad Javad Assari ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Molecular Mechanisms ◽  
Renal Toxicity ◽  
Periodic Acid ◽  
Critical Role ◽  
Oral Exposure ◽  
Control Group ◽  
Rt Pcr ◽  
Periodic Acid Schiff

Abstract Background Silver nanoparticles (AgNPs) can accumulate in various organs after oral exposure. The main objective of the current study is to evaluate the renal toxicity induced by AgNPs after repeated oral exposure and to determine the relevant molecular mechanisms. Methods In this study, 40 male Wistar rats were treated with solutions containing 30, 125, 300, and 700 mg/kg of AgNPs. After 28 days of exposure, histopathological changes were assessed using hematoxylin-eosin (H&E), Masson’s trichrome, and periodic acid-Schiff (PAS) staining. Apoptosis was quantified by TUNEL and immunohistochemistry of caspase-3, and the level of expression of the mRNAs of growth factors was determined using RT-PCR. Results Histopathologic examination revealed degenerative changes in the glomeruli, loss of tubular architecture, loss of brush border, and interrupted tubular basal laminae. These changes were more noticeable in groups treated with 30 and 125 mg/kg. The collagen intensity increased in the group treated with 30 mg/kg in both the cortex and the medulla. Apoptosis was much more evident in middle-dose groups (i.e., 125 and 300 mg/kg). The results of RT-PCR indicated that Bcl-2 and Bax mRNAs upregulated in the treated groups (p < 0.05). Moreover, the data related to EGF, TNF-α, and TGF-β1 revealed that AgNPs induced significant changes in gene expression in the groups treated with 30 and 700 mg/kg compared to the control group. Conclusion Our observations showed that AgNPs played a critical role in in vivo renal toxicity.

scholarly journals Subchronic Oral Exposure to Prometryne Changes Relations of Blood Biochemistry Indicators in Mice

2009 ◽  
Vol 78 (2) ◽  
pp. 243-251 ◽  
Author(s):  
Domagoj Đikić ◽  
Vesna Benković ◽  
Anica Horvat-Knežević ◽  
Gordana Brozović ◽  
Nada Oršolić ◽  
...  
Keyword(s):  
Metabolic Pathways ◽  
Cell Damage ◽  
Domestic Animal ◽  
Renal Tissue ◽  
Blood Biochemistry ◽  
Cultivated Plants ◽  
Oral Exposure ◽  
Triazine Herbicide ◽  
Different Doses

Prometryne is a methylthio-s-triazine herbicide used for the control of annual broadleaf and grass weeds in many cultivated plants. Significant traces are documented in the environment, mainly waters, soil and plants used for human and domestic animal nutrition. The aim of this study was to investigate whether prometryne, administered orally, could induce changes in metabolic patterns and cause cell damage in specific organs of exposed mice. Three different doses of prometryne (185, 375, 555 mg kg-1) were given per os repeatedly every 48 h, in a subchronic in vivo experimental design. After 28 days (14 doses), the correlations between the basic blood biochemistry indicators were analyzed (LDH, GGT, AlP, creatinine, ALT, AST). The increase in GGT and decrease in creatinine were the most distinct effects. LDH and AlP were increased, but rather explicitly in different dosage groups. ALT and AST did not change significantly, indicating that liver damage was milder than expected. Significant correlations between specific enzymes in renal tissue were lost in exposed groups. The correlations between muscle tissue specific enzymes were significant as a result of prometryne toxicity. Disbalance in relations between the serum indicators under study indicates that prometryne might have a myotoxic and nephrotoxic potential and the potential to affect enzymes and molecules important in normal metabolic pathways of bioenergetic physiology.

In Vivo Effect of Different Doses of Silver Nanoparticles on the Seminiferous Tubules in Albino Rats: Histopathological Study

2020 ◽  
Vol 38 (1B) ◽  
pp. 1-5
Author(s):  
Ruqayah A. Salman ◽  
Abdulrahman K. Ali ◽  
Amenah Ali Salman
Keyword(s):  
Silver Nanoparticles ◽  
Harmful Effect ◽  
Seminiferous Tubules ◽  
Albino Rats ◽  
Histopathological Study ◽  
Ag Nps ◽  
Average Size ◽  
Different Doses

The study aims to investigate the effects of silver nanoparticles (Ag NPs) on the seminiferous tubules in Albino rats. Several in vitro studies have been performed in different cell models, using various nanoparticles. Pure and spherical AgNPs with an average size of 30 nm, was injected into two groups of male albino rats (6 rats for each group) in different doses. Histopathological changes in testis tissues were showed a harmful effect of the silver nanoparticles, manifested by reducing the number of spermatogenic cells, and a decrease in the number of leyidg´s cells (group 1), and hypotrophy in seminiferous and enlargement in interstitial spaces in group 2.

scholarly journals The Potential Toxicity of Silver Nanoparticles After Repeated Oral Exposure and Underlying Mechanisms in Kidney of Rat Model

2021 ◽  
Author(s):  
Hamed Nosrati ◽  
Manijeh Hamzepoor ◽  
Maryam Sohrabi ◽  
Massoud Saidijam ◽  
Mohammad Javad Assari ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Critical Role ◽  
Oral Exposure ◽  
Rt Pcr ◽  
Histological Changes ◽  
Tnf Α ◽  
Male Wistar Rats ◽  
Pas Staining ◽  
Underlying Mechanisms

Abstract Background: Silver nanoparticles (AgNPs) can accumulate in various organs after orally exposure. This study evaluated the toxicity of AgNPs in vivo on histological changes, apoptosis and expression of growth factor genes in kidney. Methods: The male Wistar rats were treated orally with 30,125,300, and 700 mg/kg silver nanoparticles solution. After 28 days of exposure, histopatological changes were assessed by hematoxylin-eosin, trichrome Masson, and Pas staining. Apoptosis was quantified by TUNEL and immunohistochemistry of caspase-3, and level of expression of growth factors mRNAs were determined using RT-PCR. Results: Histopathologic examination revealed degenerative changes in the glomeruli, loss of tubular architecture, loss of brush border and interrupted tubular basal laminae. These changes were more noticeable in 30, and 125 mg/kg groups. The collagen intensity was increased in 30 treated groups in both cortex and medulla. Apoptosis was much more evident in middle dose groups (125 and 300 mg/kg). The results of RT-PCR indicated that Bcl-2 and Bax mRNAs upregulated in treated groups (p<0.05) and data of the EGF, TNF-α, and TGF-β1 revealed that AgNPs induced more enormous changes in gene expression in 30 and 700 mg/kg groups compared to control. Conclusion: Our observations showed that the AgNPs played a critical role in their in vivo renal toxicity.

scholarly journals Study of cytotoxic Effects Alcoholic Nerium Oleander L. Extract on female Albino mice

2011 ◽  
Vol 8 (2) ◽  
pp. 359-365
Author(s):  
Baghdad Science Journal
Keyword(s):  
Bone Marrow ◽  
Mitotic Index ◽  
Bone Marrow Cells ◽  
Nerium Oleander ◽  
Alcoholic Extract ◽  
Cytotoxic Effects ◽  
Albino Mice ◽  
Mice Liver ◽  
Different Doses

This study involved the evaluation of Alcoholic extract of Nerium Oleander L. plant that have a promising anticancer cell. This extract was compared to the well known anticancer drug Cis – Platinum by utilizing an in vivo system in female Albino mice. The first direction was cytogenetically using the mitotic Index of bone marrow cells as a parameter for the cytotoxic effect of this extract. The second direction was enzymatical using a widely distributed enzyme GOT in the different organs of mice: Liver , kidney , spleen and lung . Animals were treated with three doses of Cis-platin , 50 , 200 and 350 Mg/mouse for three days . The same doses were used for the other extract . This study showed that the extract have a promising anticancer cell as could be seen from these effect on mitotic Index (MI) of mice bone marrow , (MI) decreased in animals treated with different doses of extract , mitotic index was reduced to 78% on day three in animals treated with 350 ?g/mouse . These effects were similar to the effect of Cis-platin at the same doses. Comparing the effect of this extract on GOT enzyme showed that Cis-platin was more effective on activating the spleen GOT enzyme of about 95% than the extract while the extract is more effective in Lung , The extract activated GOT enzyme activity in the all organs.

scholarly journals Histopathological effects of silver nanoparticles in Rhamdia quelen after oral exposure

2021 ◽  
Vol 16 (1) ◽  
pp. 83-89
Author(s):  
E.A. López-Barrera ◽  
S.R. Grötzner ◽  
L. Esquivel ◽  
C.L. Voigt ◽  
S.X. Campos ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Oral Exposure ◽  
Target Organs ◽  
Vascular Congestion ◽  
Rhamdia Quelen ◽  
Liver And Kidney ◽  
Risk Of Exposure ◽  
Histopathological Effects ◽  
Different Doses ◽  
Lesion Index

The studies about silver nanoparticles (AgNP) increased in the last years but few is known about their effects in Brazilian neotropical freshwater fish species. The current study investigated the effects of AgNP on adult silver catfish Rhamdia quelen after subchronic oral exposure. After nanoparticle (NP) size and area characterization fish were administrated with three different doses for 15 days (0.03, 0.3 and 3 µg g-1). The concentration of silver in liver and kidney was measured to evaluate the bioaccumulation and discuss its effects in the target organs. Liver bioaccumulated 15, 1.7 and 0.2 % of administered doses while kidney bioaccumulated 1.33, 0.33 and 0.9 % (respectively for 0.03, 0.3 and 3 µg g-1). The histopathological findings were considered in both organs to evaluate the effects of AgNP, according to Bernet’s Lesion Index (BLI). Also were included the melano-macrophages center (MMC) and new nephrons (NN) counting respectively in liver and posterior kidney. The results revealed morphological injuries as inflammation in both studied organs and vascular congestion and steatosis in liver, in a concentration dependent way. The presence of AgNP in the tissues revealed the bioavailability of the nanoparticle while the damages and morphological disturbs showed the potential risk of exposure in R. quelen, even under environmental relevant concentrations.

Dose Requirement for Replacement Therapy in Hemophilia A

1979 ◽  
Vol 42 (03) ◽  
pp. 825-831 ◽  
Author(s):  
Jean-Pierre Allain
Keyword(s):  
Clinical Effect ◽  
Hemophilia A ◽  
Clinical Results ◽  
Severe Hemophilia ◽  
Dose Requirement ◽  
Viii Level ◽  
The Relationship ◽  
In Vivo Recovery ◽  
Different Doses

SummaryIn order to determine the correlation between different doses of F. VIII and their clinical effect,. 70 children with severe hemophilia A were studied after treatment with single doses of cryoprecipitate. The relationship between plasma F. VIII levels or doses calculated in u/ kg of body weight and clinical results followed an exponential curve. Plasma F. VIII levels of 0.35 and 0.53 u/ml corresponded to 95 and 99% satisfactory treatment, respectively. Similar clinical results were obtained with 20 and 31 u/kg. When the in vivo recovery of F. VIII after lyophilized cryoprecipitate was 0.015 u/ml for each u/kg injected, plasma F. VIII levels of 0.30 and 0.47 u/ml respectively were achieved. Since home treatment is largely based on single infusions of F. VIII, it is suggested that moderate and severe hemorrhages be treated with a dose which will provide a plasma F. VIII level of 0.5 u/ml.

Clearance and In Vivo Release by Heparin of Human Platelet Factor 4 (PF4) in the Rabbit

1984 ◽  
Vol 52 (02) ◽  
pp. 157-159 ◽  
Author(s):  
M Prosdocimi ◽  
N Scattolo ◽  
A Zatta ◽  
F Fabris ◽  
F Stevanato ◽  
...  
Keyword(s):  
Half Life ◽  
Human Platelet ◽  
Slow Component ◽  
Platelet Factor 4 ◽  
Platelet Factor ◽  
In Vivo Release ◽  
Partial Release ◽  
Different Doses ◽  
New Zealand Rabbits

Summary13 male New Zealand rabbits were injected with two different doses (25 μg/Kg and 100 μg/Kg) of human platelet factor 4 antigen (PF4). The disappearance of the protein was extremely fast with an half-life for the fast component of 1.07 ± 0.16 and 1.76 ± 0.11 min respectively. The half-life for the slow component, detectable only with the highest dosage, was 18.8 min.The administration of 2500 I.U. of heparin 30 min after PF4 administration induced a partial release of the injected protein and its clearance from plasma was slow, with half-life of 23.3 ± 5.9 min and 30.9 ± 2.19 min respectively.

Sign in / Sign up

Export Citation Format

Share Document