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Shakya A, Chaudhary SK, Bhat HR, Ghosh SK. Acute and sub-chronic toxicity studies of Benincasa hispida (Thunb.) cogniaux fruit extract in rodents. Regul Toxicol Pharmacol 2020; 118:104785. [PMID: 32976857 DOI: 10.1016/j.yrtph.2020.104785] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/08/2020] [Accepted: 09/16/2020] [Indexed: 12/21/2022]
Abstract
The objective of the present study was to evaluate the safety of standardized 70% ethanolic extract of Benincasa hispida fruit pulp (HABH) in rodents. Chemical characterization of HABH has been done by GC-MS and dimethylsulfoxonium formyl methylide, l-(+)-ascorbic acid and 2,6-dihexadecanoate were identified as major compounds in the extract. Acute oral toxicity study of HABH was done according to the Organization for Economic Cooperation and Development (OECD) guideline, by 'up and down' method, using the limit test at 2000 mg/kg, body weight in mice and were observed up to 14 days. In sub-chronic oral toxicity study, HABH was administered to Wistar rats at doses of 1000, 200 and 40 mg/kg b. w. per day for 90 days. In acute toxicity study, there was no mortality and no behavioural signs of toxicity at the limit test dose level (2000 mg/kg b. w.). In sub-chronic oral toxicity study, there was no significant difference observed in the consumption of food and water, body weight and relative organ weights. Haematological, serum biochemical and urine analysis revealed the non-adverse effects of prolonged oral consumption of HABH. The histopathologic examination did not show any differences in vital organs. Based on our findings, HABH, at dosage levels up to 1000 mg/kg b. w., is non-toxic and safe for long term oral consumption.
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Affiliation(s)
- Anshul Shakya
- Department of Pharmaceutical Sciences, Faculty of Science and Engineering, Dibrugarh University, Dibrugarh, 786 004, Assam, India.
| | - Sushil Kumar Chaudhary
- Faculty of Pharmacy, DIT University, Mussoorie-Diversion Road, Makkawala, Dehradun, 248 009, Uttarakhand, India
| | - Hans Raj Bhat
- Department of Pharmaceutical Sciences, Faculty of Science and Engineering, Dibrugarh University, Dibrugarh, 786 004, Assam, India
| | - Surajit Kumar Ghosh
- Department of Pharmaceutical Sciences, Faculty of Science and Engineering, Dibrugarh University, Dibrugarh, 786 004, Assam, India
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Olayode OA, Daniyan MO, Olayiwola G. Biochemical, hematological and histopathological evaluation of the toxicity potential of the leaf extract of Stachytarpheta cayennensis in rats. J Tradit Complement Med 2019; 10:544-554. [PMID: 33134130 PMCID: PMC7588336 DOI: 10.1016/j.jtcme.2019.05.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 04/18/2019] [Accepted: 05/13/2019] [Indexed: 12/21/2022] Open
Abstract
Background and Aim The many pharmacological potentials of Stachytarpheta cayennensis (L.C. Rich) Vahl, especially in managing central nervous system disorders, hypertension, diabetes and infections, have made it a subject of abuse, necessitating the need to ascertain its safety. This study therefore investigated the toxic effects of the leaf extract of S. cayennensis in rats following acute and 28-day repeated doses in male and female rats. Experimental procedure Acute and repeated dose studies were conducted in male and female groups of rats (135–150 g), using OECD 423 and 407 Tests guidelines respectively. Functional observational battery, and body weights were monitored. Blood samples were analysed for haematological and plasma biochemical indices. Organs (brain, kidneys and liver) specimen were collected and weighed. Kidney and liver specimen were subjected to histopathological analysis. Results and conclusion The LD50 of the extract was greater than 5000 mg/kg, p.o. (24 h) suggesting that the extract may be non-toxic. However, following single and repeated doses, the results revealed varying degree of significant (p < 0.05) changes in biochemical and heamatological indices, as well as in relative body weight and organ-body and organ-brain weight ratios. Also, histological assessment revealed evidence of liver and kidney toxicities and recovery was incomplete, as signs of toxicities were still evident after 21 days of recovery. Therefore, the extract is potentially harmful to vital organs with evidence of sex differential adverse effects and non-reversible forms of toxicity, especially with repeated usage, necessitating the need to avoid indiscriminate use. The leaf extract of Stachytarpheta cayennensis induced significant changes in rats weights. The extract caused varying significant changes in biochemical and hematological indices. Significant alteration in histoarchitecture of liver and kidney were observed. The observed toxic effects were persistent following period of recovery. The toxic effects are mostly sex dependent.
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Affiliation(s)
- Oladotun A Olayode
- Department of Pharmacology, Faculty of Pharmacy, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
| | - Michael Oluwatoyin Daniyan
- Department of Pharmacology, Faculty of Pharmacy, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
| | - Gbola Olayiwola
- Department of Clinical Pharmacy and Pharmacy Administration, Faculty of Pharmacy, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
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Vettorazzi A, Pastor L, Guruceaga E, López de Cerain A. Sex-dependent gene expression after ochratoxin A insult in F344 rat kidney. Food Chem Toxicol 2018; 123:337-348. [PMID: 30449730 DOI: 10.1016/j.fct.2018.10.057] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 10/19/2018] [Accepted: 10/24/2018] [Indexed: 02/02/2023]
Abstract
Ochratoxin A (OTA) is a potent rodent nephrocarcinogen; being males more sensitive than females. The objective was to study the response between sexes at gene expression level (whole genome transcriptomics) in kidneys of F344 rats treated with 0.21 or 0.50 mg/kg bw OTA for 21 days. DNA methylation analysis of selected genes was also studied (MALDI-TOF mass spectrometry). OTA-induced response was dose-dependent in males and females, although clearer in males. Females showed a higher number of altered genes than males but functional analysis revealed a higher number of significantly enriched toxicity lists in 0.21 mg/kg treated males. OTA modulated damage, signaling and metabolism related lists, as well as inflammation, proliferation and oxidative stress in both sexes. Eleven toxicity lists (damage, fibrosis, cell signaling and metabolism) were exclusively altered in males while renal safety biomarker and biogenesis of mitochondria lists were exclusively enriched in females. A high number of lists (39) were significantly enriched in both sexes. However, they contained many sex-biased OTA-modulated genes, mainly phase I and II, transporters and nuclear receptors, but also others related to cell proliferation/apoptosis. No biologically relevant changes were observed in the methylation of selected genes.
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Affiliation(s)
- Ariane Vettorazzi
- University of Navarra, Department of Pharmacology and Toxicology, Faculty of Pharmacy and Nutrition, E-31008, Pamplona, Spain; IdiSNA, Navarra Institute for Health Research, E-31008, Pamplona, Spain.
| | - Laura Pastor
- University of Navarra, Department of Pharmacology and Toxicology, Faculty of Pharmacy and Nutrition, E-31008, Pamplona, Spain.
| | - Elizabeth Guruceaga
- IdiSNA, Navarra Institute for Health Research, E-31008, Pamplona, Spain; Bioinformatics Platform, Center for Applied Medical Research (CIMA), University of Navarra, E-31008, Pamplona, Spain.
| | - Adela López de Cerain
- University of Navarra, Department of Pharmacology and Toxicology, Faculty of Pharmacy and Nutrition, E-31008, Pamplona, Spain; IdiSNA, Navarra Institute for Health Research, E-31008, Pamplona, Spain.
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Qian Z, Bultman J, Papineni S, He N, Lanigan L, Herman RA, Hard GC. Safety evaluation of DAS-44406-6 soybeans in Wistar rats. Regul Toxicol Pharmacol 2018; 92:152-164. [PMID: 29199065 DOI: 10.1016/j.yrtph.2017.11.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 11/22/2017] [Accepted: 11/27/2017] [Indexed: 12/13/2022]
Abstract
A 90-day in-country feeding trial in Wistar rats was conducted at Tianjin Laboratory in China to assess toxicity of diets containing DAS-44406-6 soybean meal. There were no treatment-related changes observed when compared with the non-GM isoline control groups but histopathologically, 2 of 10 high-dose females were reported to show kidney lesions. However, these findings contrasted with the absence of any treatment-related kidney lesions in 3 separate 90-day toxicity studies previously conducted in Sprague Dawley rats. Strain difference is not expected in the kidney response, and based on the low incidence and contrary evidence from previous studies, it is likely that these lesions were of spontaneous origin, or artefactual. To determine that the lesions observed were not treatment-related in Wistar rats, a specific follow-up confirmatory study was conducted under Good Laboratory Practices (GLP) in the Wistar strain of rats following an identical study design to the Tianjin study. To increase the power of detecting effects, twice the number of animals per group (20/sex/group) were used, and no treatment-related kidney histopathological changes were observed. Based on these results and entire weight of evidence evaluation, it is concluded that the histopathological changes previously noted in the 2 female Wistar rats of Tianjin study were not treatment-related and that DAS-44406-6 soybeans are as safe as conventional non-GM soybeans.
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Affiliation(s)
- Zhiyong Qian
- Tianjin Centers for Disease Control and Prevention, Tianjin, China
| | - JoAnna Bultman
- Charles River Laboratories International, Inc, United States
| | | | - Ning He
- Tianjin Centers for Disease Control and Prevention, Tianjin, China
| | - Lisa Lanigan
- Charles River Laboratories International, Inc, United States
| | - Rod A Herman
- Dow AgroSciences LLC, Indianapolis, IN 46268, United States
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Joseph S, Nicolson TJ, Hammons G, Word B, Green-Knox B, Lyn-Cook B. Expression of drug transporters in human kidney: impact of sex, age, and ethnicity. Biol Sex Differ 2015; 6:4. [PMID: 25750709 PMCID: PMC4352278 DOI: 10.1186/s13293-015-0020-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 01/10/2015] [Indexed: 11/25/2022] Open
Abstract
Background Differences in expression of drug transporters in human kidney contribute to changes in pharmacokinetics and toxicokinetics of a variety of drug compounds. The basal expression levels of genes involved in drug transport processes in the kidney introduces differences in bioavailability, distribution, and clearance of drugs, possibly influencing drug efficacy and adverse reactions. Sex differences in gene expression of transporters are a key cause of differences in sex-dependent pharmacokinetics, which may characterize many drugs and contribute to individual differences in drug efficacy and toxicity. Therefore, evaluating the expression of drug transporters in normal human kidneys is important to better understand differences in drug bioavailability, distribution, and clearance of drugs in humans. Other factors such as age and ethnicity may also contribute to individual differences in gene expression of drug transporters in the human kidney. Methods Quantitative real-time PCR (QRT-PCR) was performed to determine the gene expression of 30 drug transporters in 95 age-matched normal human kidney tissues. Multiple Student’s t-tests (Sidak-Bonferroni correction) and two-way ANOVA (Bonferroni correction) analyses were used to determine statistically significant differences. Results In the 30 transporter genes examined, sex, ethnicity, and age differences in gene expression were exhibited in normal human kidney tissue. These changes in expression were not found to be differentially significant. However, sex-age and sex-ethnicity interactions were found to be statistically significant. For sex-age interactions, SCL22A12 was found to be significantly higher expressed in females <50 years compared to males <50 years. Expression levels of SLC22A2, SLC22A12, SLC6A16, and ABCB6 were significantly higher in females <50 years compared to females ≥50 years. In sex-ethnicity interactions, expression levels of ATP7B and KCNJ8 were found to be significantly higher in African American females compared to European American females. Also, the expression of SLC31A2 was significantly higher in European American males compared to European American females. Conclusions Sex, age, and ethnic differences impacted the expression of drug transporters in normal human kidneys, which suggests that the analysis of gene expression of drug transporters will aid in improving the usage/dosage of drug therapies influencing personalized medicine and susceptibility to adverse drug reactions.
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Affiliation(s)
- Stancy Joseph
- Division of Biochemical Toxicology, National Center for Toxicological Research, Food and Drug Administration, Building 50, Room 630, HFT 100, 3900 NCTR Road, Jefferson, AR 72079 USA
| | | | - George Hammons
- Division of Biochemical Toxicology, National Center for Toxicological Research, Food and Drug Administration, Building 50, Room 630, HFT 100, 3900 NCTR Road, Jefferson, AR 72079 USA
| | - Beverly Word
- Division of Biochemical Toxicology, National Center for Toxicological Research, Food and Drug Administration, Building 50, Room 630, HFT 100, 3900 NCTR Road, Jefferson, AR 72079 USA
| | - Bridgett Green-Knox
- Divison of Systems Biology, National Center for Toxicological Research, Food and Drug Administration, Jefferson, AR 72079-9502 USA
| | - Beverly Lyn-Cook
- Division of Biochemical Toxicology, National Center for Toxicological Research, Food and Drug Administration, Building 50, Room 630, HFT 100, 3900 NCTR Road, Jefferson, AR 72079 USA
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Gautier JC, Gury T, Guffroy M, Masson R, Khan-Malek R, Hoffman D, Pettit S, Harpur E. Comparison between male and female Sprague-Dawley rats in the response of urinary biomarkers to injury induced by gentamicin. Toxicol Pathol 2014; 42:1105-16. [PMID: 24717899 DOI: 10.1177/0192623314524489] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Differences were examined between male and female Sprague-Dawley rats in the response of 16 urinary biomarkers (measured using several assay platforms) to renal injury produced by gentamicin administered subcutaneously for 10 days at a dosage of 75 mg/kg. Urinary biomarkers expressed as fold difference from contemporaneous controls and renal histopathology were assessed after 3 and 10 doses. On day 4, minimal proximal tubular changes were observed microscopically in all males but no females; on day 11, more extensive and more severe injury was observed to a similar extent in all animals of both sexes. Modest increases (maximum 5-fold) in all urinary biomarkers (except epidermal growth factor [EGF], which was decreased) on day 4 and marked elevations (maximum 271-fold) on day 11 were seen consistently in both sexes. However, the magnitude of the increases differed between the sexes. On day 4, despite the lack of tubular injury, many biomarkers were more elevated in females than males but this rarely led to statistically significant sex differences; only 2 biomarkers (β2-microglobulin and total protein) showed a greater increase in males than females in line with the histopathology. On day 11, there were many more biomarkers that showed a statistically significant difference between the sexes in fold change with treatment; in line with the results on day 4, the majority of biomarkers were more increased in females than males. It remains unresolved if sex differences in the magnitude of biomarker response at injury threshold would lead to any difference in diagnostic interpretation between the sexes. These data highlight the need for publication of more studies using animals of both sexes to fully explore the influence of sex on the diagnostic performance of the novel biomarkers.
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Affiliation(s)
| | | | | | | | | | | | - Syril Pettit
- ILSI Health and Environmental Sciences Institute, Washington, D.C., USA
| | - Ernie Harpur
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
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Sex differences in kidney gene expression during the life cycle of F344 rats. Biol Sex Differ 2013; 4:14. [PMID: 23902594 PMCID: PMC3844475 DOI: 10.1186/2042-6410-4-14] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Accepted: 07/06/2013] [Indexed: 02/03/2023] Open
Abstract
Background The kidney functions in key physiological processes to filter blood and regulate blood pressure via key molecular transporters and ion channels. Sex-specific differences have been observed in renal disease incidence and progression, as well as acute kidney injury in response to certain drugs. Although advances have been made in characterizing the molecular components involved in various kidney functions, the molecular mechanisms responsible for sex differences are not well understood. We hypothesized that the basal expression levels of genes involved in various kidney functions throughout the life cycle will influence sex-specific susceptibilities to adverse renal events. Methods Whole genome microarray gene expression analysis was performed on kidney samples collected from untreated male and female Fischer 344 (F344) rats at eight age groups between 2 and 104 weeks of age. Results A combined filtering approach using statistical (ANOVA or pairwise t test, FDR 0.05) and fold-change criteria (>1.5 relative fold change) was used to identify 7,447 unique differentially expressed genes (DEGs). Principal component analysis (PCA) of the 7,447 DEGs revealed sex-related differences in mRNA expression at early (2 weeks), middle (8, 15, and 21 weeks), and late (104 weeks) ages in the rat life cycle. Functional analysis (Ingenuity Pathway Analysis) of these sex-different genes indicated over-representation of specific pathways and networks including renal tubule injury, drug metabolism, and immune cell and inflammatory responses. The mRNAs that code for the qualified urinary protein kidney biomarkers KIM-1, Clu, Tff3, and Lcn2 were also observed to show sex differences. Conclusions These data represent one of the most comprehensive in-life time course studies to be published, assessing sex differences in global gene expression in the F344 rat kidney. PCA and Venn analyses reveal specific periods of sexually dimorphic gene expression which are associated with functional categories (xenobiotic metabolism and immune cell and inflammatory responses) of key relevance to acute kidney injury and chronic kidney disease, which may underlie sex-specific susceptibility. Analysis of the basal gene expression patterns of renal genes throughout the life cycle of the rat will improve the use of current and future renal biomarkers and inform our assessments of kidney injury and disease.
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