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Ishibashi R, Matsuhisa R, Nomoto M, Chudan S, Nishikawa M, Tabuchi Y, Ikushiro S, Nagai Y, Furusawa Y. Effect of Oral Administration of Polyethylene Glycol 400 on Gut Microbiota Composition and Diet-Induced Obesity in Mice. Microorganisms 2023; 11:1882. [PMID: 37630442 PMCID: PMC10456793 DOI: 10.3390/microorganisms11081882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/20/2023] [Accepted: 07/24/2023] [Indexed: 08/27/2023] Open
Abstract
Polyethylene glycol (PEG) is a commonly used dispersant for oral administration of hydrophobic agents. PEG is partly absorbed in the small intestine, and the unabsorbed fraction reaches the large intestine; thus, oral administration of PEG may impact the gut microbial community. However, to the best of our knowledge, no study evaluated the effects of PEG on gut commensal bacteria. Herein, we aimed to determine whether oral administration of PEG modifies the gut microbiota. Administration of PEG400 and PEG4000 altered gut microbial diversity in a concentration-dependent manner. Taxonomic analysis revealed that Akkermansia muciniphila and particularly Parabacteroides goldsteinii were overrepresented in mice administered with 40% PEG. PEG400 administration ameliorated the high-fat diet (HFD)-induced obesity and adipose tissue inflammation. Fecal microbiome transplantation from PEG400-administered donors counteracted the HFD-induced body and epididymal adipose tissue weight gain, indicating that PEG400-associated bacteria are responsible for the anti-obesity effect. Conversely, carboxymethyl cellulose, also used as a dispersant, did not affect the abundance of these two bacterial species or HFD-induced obesity. In conclusion, we demonstrated that oral administration of a high concentration of PEG400 (40%) alters the gut microbiota composition and ameliorates HFD-induced obesity.
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Affiliation(s)
- Riko Ishibashi
- Department of Pharmaceutical Engineering, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Toyama 939-0398, Japan
| | - Rio Matsuhisa
- Department of Pharmaceutical Engineering, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Toyama 939-0398, Japan
| | - Mio Nomoto
- Department of Pharmaceutical Engineering, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Toyama 939-0398, Japan
| | - Seita Chudan
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, Kurokawa, Toyama 939-0398, Japan
| | - Miyu Nishikawa
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, Kurokawa, Toyama 939-0398, Japan
| | - Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, Sugitani, Toyama 930-0194, Japan
| | - Shinichi Ikushiro
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, Kurokawa, Toyama 939-0398, Japan
| | - Yoshinori Nagai
- Department of Pharmaceutical Engineering, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Toyama 939-0398, Japan
| | - Yukihiro Furusawa
- Department of Pharmaceutical Engineering, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Toyama 939-0398, Japan
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Ramadani AP, Syukri Y, Hasanah E, Syahyeri AW. Acute Oral Toxicity Evaluation of Andrographolide Self-Nanoemulsifying Drug Delivery System (SNEDDS) Formulation. J Pharm Bioallied Sci 2021; 13:199-204. [PMID: 34349480 PMCID: PMC8291106 DOI: 10.4103/jpbs.jpbs_267_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 05/29/2020] [Accepted: 12/25/2020] [Indexed: 11/20/2022] Open
Abstract
Context: Andrographolide (AND) is an active compound of well-known medicinal plant Andrographis paniculata. It has been widely published for various activities. AND is difficult to develop into dosage form due to its poor solubility and bioavailability. This problem could be solved by using self-nanoemulsifying drug delivery system (SNEDDS) for its formulation. However, the increase of bioavailability might result in potential toxicity as a large amount of drug is absorbed. Aims: The aim of this study is to evaluate the acute potential toxicity using Organization for Economic Cooperation and Development (OECD) test: 401 methods. Subjects and Methods: The OECD 401 method employs groups of animals treated by a single dose or repeated dose (<24 h) of the drug with three variances of doses. In this study, thirty male Wistar rats were divided into five groups which consisted two groups of control and three groups of AND SNEDDS formulation (500, 700, and 900 mg/kg body weight [BW], respectively). Intensive observation of toxicity symptom was performed during the first 30 minutes followed by periodic observation for 14 days. Posttermination, histopathological examination of the liver and kidney was conducted to confirm the toxicity symptoms. To determine the level of toxicity, the lethal dose 50 (LD50) value was calculated at the end of the study. Results: The result showed that all groups presented similar toxicological symptoms such as salivation, lethargy, and cornea reflex. However, based on histopathological examination, there were abnormalities, but still in an early stage. The toxicological symptom that emerged seems related to the SNEDDS formulation with lipophilic properties. Furthermore, the value of LD50 was 832.6 mg/kg BW (po). Conclusions: The AND SNEDDS formulation was slightly toxic in male Wistar rats po.
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Affiliation(s)
| | - Yandi Syukri
- Department of Pharmacy, Universitas Islam Indonesia, Yogyakarta, Indonesia
| | - Elma Hasanah
- Department of Pharmacy, Universitas Islam Indonesia, Yogyakarta, Indonesia
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Kobayashi T, Shimomoto T, Tamura A, Namekawa J, Iijima T, Ochiai H. A novel glucokinase activator TMG-123 causes long-lasting hypoglycemia and impairs spermatogenesis irreversibly in rats. J Toxicol Sci 2021; 46:115-123. [PMID: 33642517 DOI: 10.2131/jts.46.115] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The importance of glucose is well known as an energy source in testes. In order to evaluate the effects of long-lasting hypoglycemia on testes, a novel glucokinase activator, TMG-123, was dosed to rats at 5, 20 and 100 mg/kg for 13 weeks. As a result, plasma glucose levels decreased for several hours with increasing doses over the dose range of 5 to 100 mg/kg. No toxicological findings attributable to the test article were observed in clinical observation, measurements of body weight and food consumption, necropsy, and organ weight measurement. Histopathology showed scattered degeneration of seminiferous tubules in testes, and exfoliation of germ cells related to the degeneration of seminiferous tubules was observed in the lumen of both epididymides in the same animals at the end of the dosing period. Similar histopathological findings were noted at the end of the recovery period. In addition, a fertility study was conducted at the same doses for 13 weeks for males and 5 weeks for females. Sperm analysis showed decreases in the sperm concentration and the motility index and an increase in the incidences of sperm malformations. However, there were no abnormalities in the copulation or fertility rate. These results suggest that long-lasting hypoglycemia in rats is harmful to spermatogenesis and the testicular damage does not recover.
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Affiliation(s)
- Taiki Kobayashi
- Graduate School of Veterinary Science, Azabu University
- TEIJIN PHARMA LIMITED, Teijin Institute for Bio-medical Research
| | | | - Azusa Tamura
- TEIJIN PHARMA LIMITED, Teijin Institute for Bio-medical Research
| | - Junichi Namekawa
- TEIJIN PHARMA LIMITED, Teijin Institute for Bio-medical Research
| | - Takeshi Iijima
- TEIJIN PHARMA LIMITED, Teijin Institute for Bio-medical Research
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Sato J, Tomonari Y, Doi T, Tsuchitani M. Spontaneous globule leukocyte tumor accompanied by inflammatory cells in a Wistar Hannover rat. J Toxicol Pathol 2019; 32:189-195. [PMID: 31404352 PMCID: PMC6682559 DOI: 10.1293/tox.2018-0068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 04/10/2019] [Indexed: 11/25/2022] Open
Abstract
We encountered hematolymphoid neoplastic lesions in the form of many nodules in the
spleen and liver in a 110-week-old male Wistar Hannover rat (Crl:WI (Han)). The lesions
contained atypical proliferative cells, eosinophils, lymphocytes, and macrophages. The
proliferative cells comprised various atypical cell types with or without cytoplasmic
eosinophilic granules. The granules were positively stained using periodic acid-Schiff and
elastase stains, were bluish purple using phosphotungstic acid and hematoxylin, and showed
no metachromasia using toluidine blue. In immunohistochemical staining, the proliferative
cells with or without granules were positive for granzyme B, rat mast cell protease II,
and Ki67. Electron microscopic examination revealed that single to multiple high-density
granules of variable size were covered by a membrane. These findings led to a diagnosis of
globule leukocyte tumor. The accompaniment of this tumor by inflammatory cells is likely
evoked by mast cell-like active mediators contained in the granules of the globule
leukocytes.
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Affiliation(s)
- Junko Sato
- Pathology Department, Kashima Laboratory, Nonclinical Research Center, LSI Medience Corporation, 14-1 Sunayama, Kamisu, Ibaraki 314-0255, Japan
| | - Yuki Tomonari
- Pathology Department, Kashima Laboratory, Nonclinical Research Center, LSI Medience Corporation, 14-1 Sunayama, Kamisu, Ibaraki 314-0255, Japan
| | - Takuya Doi
- Pathology Department, Kashima Laboratory, Nonclinical Research Center, LSI Medience Corporation, 14-1 Sunayama, Kamisu, Ibaraki 314-0255, Japan
| | - Minoru Tsuchitani
- Pathology Department, Kashima Laboratory, Nonclinical Research Center, LSI Medience Corporation, 14-1 Sunayama, Kamisu, Ibaraki 314-0255, Japan
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Mahiout S, Lindén J, Esteban J, Sánchez-Pérez I, Sankari S, Pettersson L, Håkansson H, Pohjanvirta R. Toxicological characterisation of two novel selective aryl hydrocarbon receptor modulators in Sprague-Dawley rats. Toxicol Appl Pharmacol 2017; 326:54-65. [PMID: 28433708 DOI: 10.1016/j.taap.2017.04.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 03/20/2017] [Accepted: 04/18/2017] [Indexed: 12/11/2022]
Abstract
The aryl hydrocarbon receptor (AHR) mediates the toxicity of dioxins, but also plays important physiological roles. Selective AHR modulators, which elicit some effects imparted by this receptor without causing the marked toxicity of dioxins, are presently under intense scrutiny. Two novel such compounds are IMA-08401 (N-acetyl-N-phenyl-4-acetoxy-5-chloro-1,2-dihydro-1-methyl-2-oxo-quinoline-3-carboxamide) and IMA-07101 (N-acetyl-N-(4-trifluoromethylphenyl)-4-acetoxy-1,2-dihydro-5-methoxy-1-methyl-2-oxo-quinoline-3-carboxamide). They represent, as diacetyl prodrugs, AHR-active metabolites of the drug compounds laquinimod and tasquinimod, respectively, which are intended for the treatment of autoimmune diseases and cancer. Here, we toxicologically assessed the novel compounds in Sprague-Dawley rats, after a single dose (8.75-92.5mg/kg) and 5-day repeated dosing at the highest doses achievable (IMA-08401: 100mg/kg/day; and IMA-07101: 75mg/kg/day). There were no overt clinical signs of toxicity, but body weight gain was marginally retarded, and the treatments induced minimal hepatic extramedullary haematopoiesis. Further, both the absolute and relative weights of the thymus were significantly decreased. Cyp1a1 gene expression was substantially increased in all tissues examined. The hepatic induction profile of other AHR battery genes was distinct from that caused by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). The only marked alterations in serum clinical chemistry variables were a reduction in triglycerides and an increase in 3-hydroxybutyrate. Liver and kidney retinol and retinyl palmitate concentrations were affected largely in the same manner as reported for TCDD. In vitro, the novel compounds activated CYP1A1 effectively in H4IIE cells. Altogether, these novel compounds appear to act as potent activators of the AHR, but lack some major characteristic toxicities of dioxins. They therefore represent promising new selective AHR modulators.
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Affiliation(s)
- Selma Mahiout
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Finland.
| | - Jere Lindén
- Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, University of Helsinki, Finland
| | - Javier Esteban
- Instituto de Bioingeniería, Universidad Miguel Hernández de Elche, Elche, Alicante, Spain
| | - Ismael Sánchez-Pérez
- Instituto de Bioingeniería, Universidad Miguel Hernández de Elche, Elche, Alicante, Spain
| | - Satu Sankari
- Central Laboratory of the Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Finland
| | | | - Helen Håkansson
- Institute of Environmental Medicine (IMM), Karolinska Institutet, Stockholm, Sweden
| | - Raimo Pohjanvirta
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Finland
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Ma BL, Yang Y, Dai Y, Li Q, Lin G, Ma YM. Polyethylene glycol 400 (PEG400) affects the systemic exposure of oral drugs based on multiple mechanisms: taking berberine as an example. RSC Adv 2017. [DOI: 10.1039/c6ra26284h] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
High concentrations of PEG400 increase in vivo exposure to berberine (D) by increasing its solubility (A), permeability (B), and lymphatic transport (C).
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Affiliation(s)
- Bing-Liang Ma
- Department of Pharmacology
- School of Pharmacy
- Shanghai University of Traditional Chinese Medicine
- Shanghai
- China
| | - Yan Yang
- Department of Pharmacology
- School of Pharmacy
- Shanghai University of Traditional Chinese Medicine
- Shanghai
- China
| | - Yan Dai
- Department of Pharmacology
- School of Pharmacy
- Shanghai University of Traditional Chinese Medicine
- Shanghai
- China
| | - Qiao Li
- Department of Pharmacology
- School of Pharmacy
- Shanghai University of Traditional Chinese Medicine
- Shanghai
- China
| | - Ge Lin
- School of Biomedical Sciences
- Faculty of Medicine
- The Chinese University of Hong Kong
- Shatin
- China
| | - Yue-Ming Ma
- Department of Pharmacology
- School of Pharmacy
- Shanghai University of Traditional Chinese Medicine
- Shanghai
- China
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Fong SYK, Wong YC, Xie C, Zuo Z. Herb-drug interactions between Scutellariae Radix and mefenamic acid: Simultaneous investigation of pharmacokinetics, anti-inflammatory effect and gastric damage in rats. JOURNAL OF ETHNOPHARMACOLOGY 2015; 170:106-116. [PMID: 25980420 DOI: 10.1016/j.jep.2015.04.036] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Revised: 01/23/2015] [Accepted: 04/18/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Scutellariae Radix (SR), the dried root of Scutellariae baicalensis Georgi, has a lot in common with non-steroidal anti-inflammatory drugs (NSAIDs). Their similarities in therapeutic action (anti-inflammation) and metabolic pathways (phase II metabolisms) may lead to co-administration by patients with the potential of pharmacokinetic and/or pharmacodynamic interactions. The current study aims to investigate the potential interactions between SR and an NSAID, mefenamic acid (MEF), on the overall pharmacokinetic dispositions, anti-inflammatory effects and adverse effects in rats. MATERIALS AND METHODS The current study simultaneously monitored the pharmacokinetic and pharmacodynamic interactions in a single animal. Four groups of Sprague-Dawley rats (n=7 each) received oral doses of a standardized SR extract (300mg/kg, twice daily), MEF (40mg/kg, daily), combination of SR extract and MEF, and vehicle control, respectively, for 5 days. On Day 5, blood samples were collected after first dose over 24h for the determination of (1) plasma concentrations of SR bioactive components, MEF and its metabolites by LC-MS/MS, and (2) prostaglandin E2 (PGE2) production and cyclooxygenase-2 (COX-2) gene expression by ex vivo analyses using LPS-stimulated RAW264.7 macrophage cells, ELISA and real time-PCR. After the rats were sacrificed, stomachs were isolated to assess their gross mucosal damage. Statistical comparisons were conducted using ANOVA and t-test. RESULTS Minimal pharmacokinetic interaction between SR extract and MEF was observed. Co-administration of SR extract and MEF did not significantly alter the plasma concentration-time profile or the pharmacokinetic parameters such as Cmax, AUC0→24, Tmax or clearance. Pharmacodynamic interaction via the COX-2 pathway was observed. The PGE2 level in LPS-stimulated RAW264.7 cells treated with plasma collected from control group over the 24h sampling (AUC0→24[PGE2]) was 191981±8789pg/mlhr, which was significantly reduced to 174,780±6531 and 46,225±1915pg/mlhr by plasma collected from rats administered with SR extract and MEF, respectively. Co-administration of SR extract and MEF further potentiated the PGE2 inhibition, with an AUC0→24[PGE2] of 37013±2354pg/mlhr (p<0.05, compared to SR or MEF group). By analyzing the COX-2 gene expression, SR extract significantly prolonged the COX-2 inhibitory effect of MEF over the 24h (p<0.05). Furthermore, the MEF-induced stomach ulcer after the 5-day treatment, as evidenced by the increased gross ulcer index and sum of lesion length (p<0.05, compared to control), could be alleviated by co-administration with SR extract (p<0.05). CONCLUSIONS Co-administration of SR extract and MEF potentiated the anti-inflammatory effects, alleviated the MEF-induced stomach adverse effect while having minimal pharmacokinetic interactions. Our findings provide insight for combination therapy of SR extract and MEF against inflammatory diseases.
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Affiliation(s)
- Sophia Yui Kau Fong
- School of Pharmacy, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Yin Cheong Wong
- School of Pharmacy, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Chen Xie
- School of Pharmacy, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Zhong Zuo
- School of Pharmacy, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong.
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