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Fu X, Liu L, Han H, Li Y, Si S, Xu B, Dai W, Yang H, He T, Du X, Pei X. Integrated fecal microbiome and metabolome analysis explore the link between polystyrene nanoplastics exposure and male reproductive toxicity in mice. Environ Toxicol 2023; 38:1277-1291. [PMID: 36880397 DOI: 10.1002/tox.23763] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 02/07/2023] [Accepted: 02/20/2023] [Indexed: 05/18/2023]
Abstract
Microplastics (MPs) and nanoplastics (NPs) are novel environmental pollutants that are ubiquitous in the environment and everyday life. NPs can easily enter the tissues and have more significant potential health risks due to their smaller diameter. Previous studies have shown that NPs can induce male reproductive toxicity, but the detailed mechanisms remain uncertain. In this study, intragastric administration treated mice with polystyrene NPs (PS-NPs, 50, and 90 nm) at 3 and 15 mg/mL/day doses for 30 days. Then, the fresh fecal samples were collected from those mice that the exposure doses of 50 nm PS-NPs at 3 mg/mL/day and 90 nm at 15 mg/mL/day for subsequent investigations of 16S rRNA and metabolomics according to significant toxicological effects (Sperm number, viability, abnormality, and testosterone level). The conjoint analysis findings indicated that PS-NPs disrupted the homeostasis of the gut microbiota, metabolism, and male reproduction, suggesting that abnormal gut microbiota-metabolite pathways may be important in PS-NPs-induced male reproductive toxicity. Meanwhile, the common differential metabolites such as 4-deoxy-Erythronic acid, 8-iso-15-keto-PGE2, apo-10'-violaxanthin, beta-D-glucosamine, isokobusone, oleamide, oxoadipic acid, sphingosine induced by 50 and 90 nm PS-NPs might be used as biomarkers to explore PS-NPs-induced male reproductive toxicity. In addition, this study systematically demonstrated that nano-scale PS-NPs induced male reproductive toxicity via the crosstalk of gut microbiota and metabolites. It also provided valuable insights into the toxicity of PS-NPs, which was conducive to reproductive health risk assessment for public health prevention and treatment.
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Affiliation(s)
- Xufeng Fu
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Ling Liu
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Hang Han
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Yuanyuan Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
| | - Shengbin Si
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Bo Xu
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Wenjie Dai
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Hong Yang
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Tiantian He
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Xing Du
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Xiuying Pei
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
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2
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Ho C, Brennan A, Dinh D, Lefkovits J, Liew D, Si S, Reid C, Norman R. Prior Coronary Artery Bypass Graft Surgery Impacts 30-Day Quality of Life After Percutaneous Coronary Intervention: Evidence From the Victorian Cardiac Outcomes Registry (VCOR). Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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3
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Xu L, Tan HD, Liu LG, Liu XL, Huang J, Si S, Zhou WY, Sun YL, Yang ZY. [Diagnosis and treatment of pancreatic tuberculosis: experiences of 10 cases]. Zhonghua Jie He He Hu Xi Za Zhi 2019; 42:357-360. [PMID: 31137111 DOI: 10.3760/cma.j.issn.1001-0939.2019.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objectives: To study the clinical characteristics of pancreatic tuberculosis, and therefore to improve the diagnosis and treatment of this disease. Methods: The clinical data of 10 patients with pancreatic tuberculosis form 1990 to 2017 were reviewed, including clinical characteristics, laboratory tests and imaging features. Results: The ten patients aged 28 to 71 (median 56) years. All of them presented varying degrees of abdominal pain and weight loss (3 to 8 kg). Hypo-echoic pancreatic masses were shown by abdominal ultra-sound in 7 cases, and cystic-solid masses with thick wall was shown by abdominal CT scan in 4 cases, but dilatation of the pancreatic duct was found in none of the 10 cases. Hemoglobin levels lower than 12 g/L were found in 6 cases, and ESR more than 20 mm/1 h was present in 7 cases. Four cases received PPD test, but only one was positive. CA19-9 was found to be higher than normal (27 IU/ml) in 3 cases (39.2 IU/ml, 125.7 IU/ml, 88.9 IU/ml respectively). Three cases received T-spot.TB tests, and all the results were positive. Seven cases received laparotomy, and the other 3 received endoscopic ultrasound-guided biopsy. Caseous necrosis and Langerhans cells were found in all the 10 cases. Nine patients were treated by 6 to 12 months' anti-tuberculosis therapies, and at 1-5 years' follow-up, 8 were cured and 1 improved. Conclusions: The manifestations of pancreatic tuberculosis were easy to be confused with other diseases, and therefore a comprehensive understanding of history and careful examinations were important for a correct diagnosis. Once the diagnosis was made, prompt standard anti-tuberculosis therapy could lead to a favorable outcome.
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Affiliation(s)
- L Xu
- Department of Hepatobiliary Surgery, China-Japan Friendship Hospital, Beijing 100029, China
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4
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Liew S, Dinh D, Liew D, Brennan A, Si S, Duffy S, Lefkovits J, Stub D. Prevalence, Outcomes and Cost Implications of Patients Undergoing Same Day Discharge After Elective Percutaneous Coronary Intervention (PCI). Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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5
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Huang J, Liu XL, Tan HD, Sun YL, Liu LG, Xu L, Si S, Zhou WY, Yang ZY. [The epidemiological and clinical characteristics of liver hemangioma in health adults]. Zhonghua Yi Xue Za Zhi 2018; 98:2925-2928. [PMID: 30293351 DOI: 10.3760/cma.j.issn.0376-2491.2018.36.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To report the epidemiological and clinical characteristics of liver hemangioma in health adults from a large sample of Health Examination Database. Methods: A retrospective study was performed to analyze the epidemiological and clinical Characteristics of liver hemangioma from people who underwent examination in China-Japan friendship hospital from 2014 to 2016. The analysis was also included the relationship between gender or age and the incidence and tumor size. Results: A total of 83 964 healthy adults (age≥18) were included in the study. The overall incidence of liver hemangioma was 2.95%. There was no significant difference of liver hemangiomas incidence between male which was 3.03%, and which was 2.88% in female. Liver hemangiomas incidence had shown obviously increased with patients' age, as the evidence indicating that the prevalence of liver hemangioma in <30 age group was only 1.87%, and the prevalence of liver hemangioma in 41-50 age group raised to 3.72%. While the size of liver hemangioma in different genders was also increasing with age, the tumor size of liver hemangioma in <30 age group was the smallest. Under 50 years old, the size of female patients' liver hemangioma was larger than that of male patients in each age group. The size of female patients' liver hemangioma had obviously decreased over 60 years old. Conclusion: The progress of liver hemangioma was highly influenced by age and gender.
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Affiliation(s)
- J Huang
- Department of General Surgery, Ching-Japan Friendship Hospital, Beijing 100029, China
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6
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Newton P, Si S, Reid C, Macdonald P. 30-Day and 12-Month Outcomes from the NSW Heart Failure SNAPSHOT. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Yudi M, Clark D, Tsang D, Jelinek M, Kalten K, Joshi S, Phan K, Nasis A, Amerena J, MacIsaac A, Arunothayaraj S, Si S, Reid C, Farouque O. SMARTphone-based, Early Cardiac REHABilitation in Patients with Acute Coronary Syndromes [SMART-REHAB Trial]: A Randomised Controlled Trial. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Si S, Xu Y, Liu C, Liu P, Wang X, Hong B. Identification of a novel upregulator of ABCA1 and SRB1 expression with the action of regulating cholesterol metabolism in vitro and in vivo. Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.07.590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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9
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Guo PC, Yan SQ, Si S, Bai CY, Zhao Y, Zhang Y, Yao JY, Li YM. De novo assembly and characterization of farmed blue fox (Alopex lagopus) global transcriptome using Illumina paired-end sequencing. Genet Mol Res 2016; 15:gmr7603. [PMID: 27051000 DOI: 10.4238/gmr.15017603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The blue fox (Alopex lagopus), a coat-color variant of the Arctic fox, is a domesticated fur-bearing mammal. In the present study, transcriptome data generated from a pool of nine different tissues were obtained with Illumina HiSeq2500 paired-end sequencing technology. After filtering from raw reads, 32,358,290 clean reads were assembled into 161,269 transcripts and 97,252 unigenes by the Trinity fragment assembly software. Of the assembled unigenes, 37,967 were annotated in the National Center for Biotechnology Information (NCBI) Non-Redundant (NR) protein database and 26,264 in the Swiss-Prot database. Among the annotated unigenes, 24,839 and 24,267 were assigned using the Gene Ontology (GO) and euKaryotic Orthologous Groups (KOG) databases, respectively. Altogether, 17,057 unigenes were mapped onto 227 pathways using the Kyoto Encyclopedia of Genes and Genomes database. In addition, 6394 simple sequence repeats were identified by examining 12,965 unigenes (>1 kb), which could contribute to the development of molecular markers. This study generated transcriptome data for the blue fox that will promote further progress in expression profiling studies, and provide a good annotation basis for genomic studies.
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Affiliation(s)
- P C Guo
- College of Animal Science, Jilin University, Changchun, China
| | - S Q Yan
- College of Animal Science, Jilin University, Changchun, China
| | - S Si
- College of Animal Science, Jilin University, Changchun, China
| | - C Y Bai
- College of Animal Science, Jilin University, Changchun, China
| | - Y Zhao
- College of Animal Science, Jilin University, Changchun, China
| | - Y Zhang
- College of Animal Science, Jilin University, Changchun, China
| | - J Y Yao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Y M Li
- College of Animal Science, Jilin University, Changchun, China
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10
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Yan SQ, Li YM, Bai CY, Guo PC, Si S, Sun JH, Zhao ZH. Identification of cDNA sequences and alternative splicing patterns of canine AMEL genes (AMELX and AMELY). Genet Mol Res 2015; 14:16241-6. [PMID: 26662417 DOI: 10.4238/2015.december.8.14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Amelogenin is a major protein of the developing enamel matrix. There are two amelogenin genes (AMELX and AMELY) located on the X and Y chromosomes, respectively, in dogs. In the present study, we characterized full-length cDNAs and alternative splicing patterns of the AMEL genes in the tooth tissue of a dog by 5'- and 3'-rapid amplification of cDNA ends and AMEL-specific RT-PCR. Sequence analysis revealed that the coding regions of AMELX and AMELY were 579 and 576 bp (accession Nos. KP244310 and KP244311), respectively. The coding sequence of AMELX had 95.1% identity to that of AMELY. The AMEL genes on X and Y chromosomes were both expressed in developing tooth tissue. Eight different alternatively spliced transcripts were identified, five from AMELX and three from AMELY.
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Affiliation(s)
- S Q Yan
- College of Animal Science, Jilin University, Changchun, China
| | - Y M Li
- College of Animal Science, Jilin University, Changchun, China
| | - C Y Bai
- College of Animal Science, Jilin University, Changchun, China
| | - P C Guo
- College of Animal Science, Jilin University, Changchun, China
| | - S Si
- College of Animal Science, Jilin University, Changchun, China
| | - J H Sun
- College of Animal Science and Veterinary Medicine, Qingdao Agricultural University, Qingdao, China
| | - Z H Zhao
- College of Animal Science, Jilin University, Changchun, China
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11
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Li YM, Si S, Guo PC, Li LL, Bai CY, Yan SQ. Cloning and identification of the ASIP gene in Chinese raccoon dog (Nyctereutes procyonoides procyonoides). Genet Mol Res 2015; 14:16312-6. [PMID: 26662425 DOI: 10.4238/2015.december.8.22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The quantity, quality, and distribution of eumelanin and pheomelanin determine a wide variety of coat colors in animals. Three coat color variants exist in farmed wild-type Chinese raccoon dog (Nyctereutes procyonoides procyonoides), which is an important fur-bearing animal species. The ASIP gene is an important candidate gene for coat color variation in some species. In this study, the complete cDNA sequences of ASIP were amplified from a wild-type Chinese raccoon dog. Sequence analysis revealed the coding region of ASIP in Chinese raccoon dog to be 396-bp in length and two transcripts (accession Nos. KT224450 and KT224451) were identified due to the alternative use of exon 1 (1A and 1C). However, the alternative splicing pattern and the coding sequence of ASIP in three types of coat color variants were the same as those identified in the wild-type individual. Based on the results obtained in this study, we can exclude a role for alternative splicing of exon 1 and the coding sequence of ASIP in coat color variation in Chinese raccoon dog.
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Affiliation(s)
- Y M Li
- College of Animal Science, Jilin University, Changchun, China
| | - S Si
- College of Animal Science, Jilin University, Changchun, China
| | - P C Guo
- College of Animal Science, Jilin University, Changchun, China
| | - L L Li
- College of Animal Science, Jilin University, Changchun, China
| | - C Y Bai
- College of Animal Science, Jilin University, Changchun, China
| | - S Q Yan
- College of Animal Science, Jilin University, Changchun, China
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12
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Yan SQ, Bai CY, Qi SM, Li ML, Si S, Li YM, Sun JH. Cloning and association analysis of KIT and EDNRB polymorphisms with dominant white coat color in the Chinese raccoon dog (Nyctereutes procyonoides procyonoides). Genet Mol Res 2015; 14:6549-54. [PMID: 26125860 DOI: 10.4238/2015.june.12.8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The Chinese raccoon dog (Nyctereutes procyonoides procyonoides) is one of the most important fur-bearing animal species. The dominant white individual, a coat color variant in farmed Chinese raccoon dog, shows a completely white phenotype over the entire body. The KIT and EDNRB genes have been reported to be associated with the dominant white coat color in some mammalian species. In the present study, the full-length coding sequences of KIT and EDNRB were amplified from a dominant white and a wild-type Chinese raccoon dog. Sequence analysis revealed that the coding region of KIT and EDNRB in Chinese raccoon dog was 2919 and 1332 base pairs in length (accession No. KM083121 and KM083122), respectively, and 2 single-nucleotide polymorphisms (SNPs; c.600C>T and c.967G>A) in KIT and 1 SNP (c.259A>C) in EDNRB was found only in the dominant white individual. An alternative splicing site at the boundary of 4 and 5 of the KIT gene was identified in both individuals. We further investigated the association between the 3 SNPs of KIT and EDNRB and dominant white coat color by genotyping 18 individuals. We found no association between these SNPs and dominant white coat color. Based on these results, we can exclude the coding regions of the KIT and EDNRB genes as determinants of the dominant white coat color in Chinese raccoon dog.
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Affiliation(s)
- S Q Yan
- College of Animal Science, Jilin University, Changchun, China
| | - C Y Bai
- College of Animal Science, Jilin University, Changchun, China
| | - S M Qi
- College of Animal Science and Veterinary Medicine, Qingdao Agricultural University, Qingdao, China
| | - M L Li
- College of Animal Science, Jilin University, Changchun, China
| | - S Si
- College of Animal Science, Jilin University, Changchun, China
| | - Y M Li
- Northwest A&F University, Yangling, Shaanxi, China
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13
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Sumru Bayin N, Si S, Modrek A, Song HR, Zagzag D, Hoang DM, Wadghiri YZ, Dolgalev I, Baysan M, Heguy A, Barcellos-Hoff MH, Placantonakis D. SC-04 * NON-UNIFORM NOTCH SIGNALING UNDERLIES HETEROGENEITY WITHIN THE GLIOBLASTOMA STEM CELL POPULATION. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou275.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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14
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Xu Y, Liu Q, Zhao P, Li N, Lai F, Xu Y, He X, Jiang W, Hong B, Si S. 715 FORMONONETIN, A CLA1 UPREGULATOR, REDUCES ATHEROSCLEROTIC LESION FORMATION IN APOE−/− MICE. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70716-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Wang L, Bao Y, Xu Y, Yang Y, Wang L, Si S, Cho S, Hong B. 148 SALVIANOLIC ACID B CAN INHIBIT MACROPHAGE UPTAKE OF MODIFIED-LDL BY DIRECTLY BINDING TO TYPE B SCAVENGER RECEPTOR CD36. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70149-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Yang Y, Si S, Hong B. Abstract: P445 CHARACTERIZATION OF THE ISOFLAVONE PRATENSEIN AS A NOVEL TRANSCRIPTIONAL UP-REGULATOR OF SCAVERGER RECEPTOR BI IN HEPG2 CELLS. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70740-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Wang L, Bao Y, Yang Y, Si S, Hong B. Abstract: P472 DISCOVERY OF ANTAGONISTS FOR HUMAN SCAVENGER RECEPTOR CD36 VIA AN ELISA-LIKE HIGH-THROUGHPUT SCREENING ASSAY. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70767-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zhang Z, Liu J, Xu Y, Jiang W, Hong B, Xie Z, Si S. Abstract: P438 IMB6791 STIMULATES CHOLESTEROL EFFLUX BY INCREASING THE BINDING OF APOLIPOPROTEIN A-I TO ATP-BINDING CASSETTE TRANSPORTER A1. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70733-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Panda DS, Choudhury NSK, Yedukondalu M, Si S, Gupta R. Evaluation of Gum of Moringa oleifera as a Binder and Release Retardant in Tablet Formulation. Indian J Pharm Sci 2008; 70:614-8. [PMID: 21394258 PMCID: PMC3038286 DOI: 10.4103/0250-474x.45400] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2007] [Revised: 06/28/2008] [Accepted: 09/27/2008] [Indexed: 11/25/2022] Open
Abstract
The present study was undertaken to find out the potential of gum from Moringa oleifera to act as a binder and release retardant in tablet formulations. The effect of calcium sulphate dihydrate (water insoluble) and lactose (water soluble) diluent on the release of propranolol hydrochloride was studied. The DSC thermograms of drug, gum and mixture of gum/drug indicated no chemical interaction. Tablets (F1, F2, F3, and F4) were prepared containing calcium sulphate dihydrate as diluent, propranolol hydrochloride as model drug using 10%, 8%, 6% and 4% w/v of gum solution as binder. Magnesium stearate was used as lubricant. Physical and technological properties of granules and tablets like flow rate, Carr index, Hausner ratio, angle of repose, hardness, friability and disintegration time were determined and found to be satisfactory. Tablets were prepared by wet granulation method containing calcium sulphate dihydrate as excipient, propranolol hydrochloride as model drug using 10%, 20% and 30% of gum as release retardant, magnesium stearate was used as lubricant. Similarly tablets were prepared replacing lactose with calcium sulphate dihydrate. Despite of the widely varying physico-chemical characteristics of the excipients, the drug release profiles were found to be similar. The drug release increased with increasing proportions of the excipient and decreased proportion of the gum irrespective of the solubility characteristics of the excipient. The values of release exponent 'n' are between 0.37 and 0.54. This implies that the release mechanism is Fickian. There is no evidence that the dissolution or erosion of the excipient has got any effect on the release of the drug. The t(50%) values for tablets containing calcium sulphate dihydrate were on an average 10%-15% longer than the tablets containing lactose as excipient. These relatively small differences in t(50%) values suggest that the nature of excipient used appeared to play a minor role in regulating the release, while the gum content was a major factor.
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Affiliation(s)
- D. S. Panda
- Institute of Pharmacy and Technology, Salipur, Cuttack-754 202, India
| | | | - M. Yedukondalu
- College of Pharmaceutical Sciences, Mohuda, Berhampur-760 001, India
| | - S. Si
- School of Pharmacy, ITER, Bhubaneswar-751 030, India
| | - R. Gupta
- Birla Institute of Technology, Mesra, Ranchi-835 215, India
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Sahu SK, Azam MA, Banerjee M, Acharrya S, Behera CC, Si S. Synthesis, characterization and biological activity of 2-methyl-3-aminoquinazolin-4(3H)-ones Schiff bases. J BRAZIL CHEM SOC 2008. [DOI: 10.1590/s0103-50532008000500023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Affiliation(s)
- S. Si
- a Department of Chemistry , Tsinghua University , Beijing, 100084, PR China
- b Department of Chemistry , Beijing Normal University , Beijing, 100875, PR China
| | - C. Li
- a Department of Chemistry , Tsinghua University , Beijing, 100084, PR China
| | - R. Wang
- a Department of Chemistry , Tsinghua University , Beijing, 100084, PR China
| | - Y. Li
- a Department of Chemistry , Tsinghua University , Beijing, 100084, PR China
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Bose A, Gupta JK, Dash GK, Ghosh T, Si S, Panda DS. Diuretic and antibacterial activity of aqueous extract of Cleome rutidosperma D.C. Indian J Pharm Sci 2007. [DOI: 10.4103/0250-474x.33162] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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24
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Si S, Sun Y, Li Z, Ge W, Zhang X, Hu P, Huang Y, Chen G, Song H, Huang Y, Ma B, Li X, Sui Y. Gene therapy by membrane-expressed superantigen for α-fetoprotein-producing hepatocellular carcinoma. Gene Ther 2006; 13:1603-10. [PMID: 16855617 DOI: 10.1038/sj.gt.3302823] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Staphylococcus enterotoxin A (SEA) is a powerful immunostimulant, which can stimulate T cells bearing certain T-cell receptor beta-chain variable regions, when bound to major histocompatibility complex II molecules. In vivo administration of intact superantigen in sufficient therapeutic amounts risks unwanted cytotoxicity against normal cells. In this study, we used SEA fused with CD80 transmembrane region (named as SEAtm) driven by alpha-fetoprotein (AFP) enhancer/promoter to reduce toxicity and to improve safety and efficiency in the application of SEA. We demonstrated that SEAtm by adenovirus from the AFP enhancer/promoter (AdAFPSEA) could be expressed on the surface of AFP-producing cell line Hepa1-6 instead of non-AFP-producing cell lines. Hepa1-6 infected by recombinant adenovirus stimulated proliferation of splenocytes and activated CD4(+) and CD8(+) T cells in vitro. After AdAFPSEA was injected into the subcutaneously established hepatoma in vivo, the expression of SEA was detected in tumor tissues, which subsequently induced tumor-specific cytotoxic T cells in spleen. Moreover, hepatocellular carcinoma (HCC) xenografts were suppressed by treatment with AdAFPSEA and the survival time of treated mice was prolonged. These findings suggest that membrane-expressed SEA by adenovirus from AdAFPSEA can generate stronger local and systemic antitumor responses against HCC.
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Affiliation(s)
- S Si
- State Key Laboratory of Cancer Biology, Department of Pathology, XiJing Hospital, Fourth Military Medmedical University, Shanxi Province, Xi'an, People's Republic of China
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Kong W, Wei J, Abidi P, Lin M, Inaba S, Li C, Wang Y, Wang Z, Si S, Pan H, Wang S, Wu J, Li Z, Liu J, Jiang JD, Kong W. Th-W49:1 Berberine is a promising novel cholesterol-lowering drug working through a unique mechanism distinct from statins. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)81865-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Sahu LK, Si S, Gupta JK. Simultaneous Assay of Lamivudine and Zidovudine in Combination Tablets by Derivative Spectrophotometry. Journal of Pharmaceutical Research 2004. [DOI: 10.18579/jpcrkc/2004/3/4/79692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Abstract
Based on the impedance characteristic of erythrocytes at high frequency, the response of piezoelectric crystal impedance (PCI) sensor in the erythrocyte suspension was derived and verified experimentally. A method of using PCI sensor to investigate erythrocyte aggregation-sedimentation phenomenon was proposed. From the frequency response of the PCI sensor, the erythrocyte aggregation time and sedimentation rate could be obtained during erythrocyte aggregation and sedimentation. With the present method, the effects of the erythrocyte deformability, the osmotic pressure and the coexisting macromolecules on the erythrocyte sedimentation rate were studied. The results show that the PCI sensor possesses some advantages, such as good sensitivity, simplicity of use and no thermal effect for the impedance study of erythrocyte aggregation and sedimentation.
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Affiliation(s)
- S Si
- Department of Chemistry, Central South University of Technology, Changsha, PR China.
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Tomoda H, Namatame I, Si S, Kawaguchi K, Masuma R, Namikoshi M, Omura S. Phenochalasins, inhibitors of lipid droplet formation in mouse macrophages, produced by Phomopsis sp. FT-0211. J Antibiot (Tokyo) 1999; 52:851-6. [PMID: 10604753 DOI: 10.7164/antibiotics.52.851] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phomopsis sp. FT-0211, a soil isolate, was found to produce inhibitors of lipid droplet formation in mouse peritoneal macrophages. Structurally related new compounds designated phenochalasins A and B were isolated from the fermentation broth of the producing strain by solvent extraction, ODS column chromatography and preparative HPLC. Phenochalasin A caused a dose-dependent reduction in the number and size of lipid droplets in macrophages without any cytotoxic effect at least up to 20 microm. On the other hand, phenochalasin B showed inhibition of lipid droplet formation with a severe cytotoxic effect on macrophages.
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Affiliation(s)
- H Tomoda
- Graduate School of Pharmaceutical Sciences, Kitasato University, Japan
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Tomoda H, Namatame I, Tabata N, Kawaguchi K, Si S, Omura S. Structure elucidation of fungal phenochalasins, novel inhibitors of lipid droplet formation in mouse macrophages. J Antibiot (Tokyo) 1999; 52:857-61. [PMID: 10604754 DOI: 10.7164/antibiotics.52.857] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structures of phenochalasins A and B were elucidated by spectroscopic studies including various NMR measurements. Phenochalasins A and B have the cytochalasan skeleton of the 21,23-dioxa, 17,22-dione moiety containing unique phenyl and O-methyl phenyl residues at the C-10 position, respectively.
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Affiliation(s)
- H Tomoda
- Graduate School of Pharmaceutical Sciences, Kitasato University, Japan
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Namatame I, Tomoda H, Si S, Yamaguchi Y, Masuma R, Omura S. Beauveriolides, specific inhibitors of lipid droplet formation in mouse macrophages, produced by Beauveria sp. FO-6979. J Antibiot (Tokyo) 1999; 52:1-6. [PMID: 10092189 DOI: 10.7164/antibiotics.52.1] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Beauveria sp. FO-6979, a soil isolate, was found to produce inhibitors of lipid droplet formation in mouse peritoneal macrophages. A new compound beauveriolide III was isolated along with a known compound beauveriolide I from the fermentation broth of the producing strain by solvent extraction, ODS column chromatography, silica gel column chromatography and preparative HPLC. Beauveriolides I and III caused a reduction in the number and size of cytosolic lipid droplets in macrophages at 10 microM without any cytotoxic effect on macrophages.
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Affiliation(s)
- I Namatame
- Graduate School of Pharmaceutical Sciences, Kitasato University, and Research Center for Biological Function, The Kitasato Institute, Tokyo, Japan
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Namatame I, Tomoda H, Tabata N, Si S, Omura S. Structure elucidation of fungal beauveriolide III, a novel inhibitor of lipid droplet formation in mouse macrophages. J Antibiot (Tokyo) 1999; 52:7-12. [PMID: 10092190 DOI: 10.7164/antibiotics.52.7] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structure of fungal beauveriolide III, an inhibitor of lipid droplet formation in mouse macrophages, was elucidated to be cyclo-[(3S,4S)-3-hydroxy-4-methyloctanoyl-L-phenylalanyl-L-alanyl- D-allo-isoleucyl] by spectral analyses and chemical degradation.
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Affiliation(s)
- I Namatame
- Graduate School of Pharmaceutical Sciences, Kitasato University, and Research Center for Biological Function, The Kitasato Institute, Tokyo, Japan
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Si S, Wang T, Yang G. [Study on mechanisms of T lymphocyte function changes in mice under simulated weightlessness in terms of IL-2 and Bcl-2 gene transcription]. Space Med Med Eng (Beijing) 1998; 11:254-7. [PMID: 11543242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
To understand the mechanisms of T lymphocyte function changes under simulated weightlessness T lymphocyte proliferation (MTT assay), IL-2 production (biological assay), IL-2 gene (dot blot) and Bcl-2 oncogene (RT-PCR) transcription of splenic cell were observed in mice. The results showed that on the 7 th and 14 th day of simulated weightlessness T lymphocyte proliferation and IL-2 production decreased and significant on the 14 th day; on the 7 th and 14 th day of simulated weightlessness IL-2 and Bcl-2 gene transcription decreased, significant on the 14 day. It demonstrated that simulated weightlessness inhibits IL-2 production by decreasing IL-2 gene transcrition. IL-2 and Bcl-2 gene may be regulators of lymphocyte function under simulated weightlessness.
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Affiliation(s)
- S Si
- Institute of Space Medico-Engineering, Beijing, China
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Wang T, Wen X, Yang G, Hu P, Si S. [Effect of -6 degrees bed-rest on T-lymphocyte proliferation and cytokines production in human]. Space Med Med Eng (Beijing) 1998; 11:107-10. [PMID: 11543225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
In this study, the effect of -6 degrees head-down bed-rest on proliferation of T lymphocyte stimulated by phytohemagglutinin, a kind of polyclone T cell activators and cytokines production were observed. The results showed: after 2 d bed-rest, proliferation of T lymphocyte stimulated by phytohemagglutinin decreased significantly; the activity of interleukin-2 trended to decrease; the expression of interleukin-2 receptor tended to increase; the production of interleukin-6 decreased significantly. After 6 d bed-rest, T lymphocyte proliferation restored to normal; the activity of interleukin-2 and expression of interleukin-2 receptor had no change; the production of interleukin-6 decreased significantly. This result demonstrated that -6 degrees bed-rest can decrease T lymphocyte proliferation function, and this decrease may be caused by the reduction of cytokines secretion.
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Affiliation(s)
- T Wang
- Institute of Space Medico-Engineering, Beijing, China
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Si S. Electropolymerized m-phenylenediamine as a means to immobilize active protein on thickness-shear-mode quartz crystal. Talanta 1995; 42:469-74. [DOI: 10.1016/0039-9140(95)01434-d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/1994] [Revised: 09/09/1994] [Accepted: 09/12/1994] [Indexed: 11/26/2022]
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Zhao C, Gao W, Sun Y, Si S, Xue X. [Determination of water soluble silicon from herbal drugs]. Zhongguo Zhong Yao Za Zhi 1990; 15:555-6, 577. [PMID: 2092717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This article has set up a method for silicon determination by ammonium molybdate-ferrous sulfate-sodium carbonate spectrophotometry. The method is simple, convenient, quick, effective and free of the influence of phosphate ion and reducing agents such as vitamin C and so on. By this method water soluble silicon has been determined in 38 herbal drugs.
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Affiliation(s)
- C Zhao
- Hebei College of Traditional Chinese Medicine, Shijiazhuang
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