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Zhang J, Teng C, Li C, He W. Deliver Anti-inflammatory Drug Baicalein to Macrophages by Using a Crystallization Strategy. Front Chem 2020; 8:787. [PMID: 33062636 PMCID: PMC7517873 DOI: 10.3389/fchem.2020.00787] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 07/28/2020] [Indexed: 01/13/2023] Open
Abstract
Macrophages are potent to modulate inflammation via phenotypic switch and production of inflammatory factors. Baicalein (BCL) is frequently used to alleviate inflammation; however, its application is always hindered due to low solubility. Herein, BCL nanocrystals (BNRs) were prepared to improve its delivery to macrophages. The prepared BNRs have a diameter of 150 nm with a rod-like structure. The nanocrystals could be well-taken up by macrophages via the caveolar pathway and, therefore, promote the polarization switch from proinflammatory phenotype to anti-inflammatory macrophages and alleviate the inflammation via reducing production cytokine IL-12. In conclusion, the crystallization strategy is promising for the improvement of the solubility of BCL and promotion of its anti-inflammatory activities.
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Affiliation(s)
- Jianming Zhang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- School of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Chao Teng
- School of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Caolong Li
- School of Science, China Pharmaceutical University, Nanjing, China
| | - Wei He
- Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, China
- School of Pharmacy, China Pharmaceutical University, Nanjing, China
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Teng C, Lin C, Huang F, Xing X, Chen S, Ye L, Azevedo HS, Xu C, Wu Z, Chen Z, He W. Intracellular codelivery of anti-inflammatory drug and anti-miR 155 to treat inflammatory disease. Acta Pharm Sin B 2020; 10:1521-1533. [PMID: 32963947 PMCID: PMC7488359 DOI: 10.1016/j.apsb.2020.06.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/18/2020] [Accepted: 05/25/2020] [Indexed: 12/27/2022] Open
Abstract
Atherosclerosis (AS) is a lipid-driven chronic inflammatory disease occurring at the arterial subendothelial space. Macrophages play a critical role in the initiation and development of AS. Herein, targeted codelivery of anti-miR 155 and anti-inflammatory baicalein is exploited to polarize macrophages toward M2 phenotype, inhibit inflammation and treat AS. The codelivery system consists of a carrier-free strategy (drug-delivering-drug, DDD), fabricated by loading anti-miR155 on baicalein nanocrystals, named as baicalein nanorods (BNRs), followed by sialic acid coating to target macrophages. The codelivery system, with a diameter of 150 nm, enables efficient intracellular delivery of anti-miR155 and polarizes M1 to M2, while markedly lowers the level of inflammatory factors in vitro and in vivo. In particular, intracellular fate assay reveals that the codelivery system allows for sustained drug release over time after internalization. Moreover, due to prolonged blood circulation and improved accumulation at the AS plaque, the codelivery system significantly alleviates AS in animal model by increasing the artery lumen diameter, reducing blood pressure, promoting M2 polarization, inhibiting secretion of inflammatory factors and decreasing blood lipids. Taken together, the codelivery could potentially be used to treat vascular inflammation.
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Affiliation(s)
- Chao Teng
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Chenshi Lin
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Feifei Huang
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Xuyang Xing
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Shenyu Chen
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Ling Ye
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Helena S. Azevedo
- School of Engineering and Materials Science, Institute of Bioengineering, University of London, London E1 4NS, UK
| | - Chenjie Xu
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Zhengfeng Wu
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Zhongjian Chen
- Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai 200443, China
| | - Wei He
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
- Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai 200443, China
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Chen L, Chen Y, Yun H, Jianli Z. Tetramethylpyrazine (TMP) protects rats against acute pancreatitis through NF-κB pathway. Bioengineered 2019; 10:172-181. [PMID: 31034353 PMCID: PMC6527080 DOI: 10.1080/21655979.2019.1613103] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Acute pancreatitis (AP) is a digestive disease characterized by pancreatic inflammation. Tetramethylpyrazine (TMP) has been effectively used to ameliorate the damage on intestinal mucosa injury in rats with acute necrotizing pancreatitis (ANP). We aim to study the protective effect of TMP on caerulein-induced AP and to explore the possible mechanism. The mice randomized into control and different experimental groups. AP was induced in mice by 6-hourly intraperitoneal (i.p) injections of caerulein (50 μg/kg at 1 h interval). TMP (i.p, 10 mg/kg, 1 h interval) was administered 3 h before caerulein injection. Administration of TMP attenuated the severity of AP as shown by the histopathology, reduced serum amylase activity and pro-inflammatory cytokines TNF-α and IL-6. Further, TMP enhances the beneficial effect by reducing caerulein-induced NF-κB activation and inducing cell apoptosis in pancreas. Therefore, inhibition of nuclear factor-kappa B(NF-κB) signals by TMP represents a potential therapeutic strategy for the treatment of acute pancreatitis.
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Affiliation(s)
- Longying Chen
- a Department of Internal medicine intensive care , the central hospital of Linyi , Yishui , Shandong , China
| | - Yongjun Chen
- b Department of Traditional Chinese medicine , the affiliated hospital of Qingdao University , Shandong , China
| | - Hao Yun
- c Department of General Surgery , The Affiliated Hospital of Qingdao University , Shandong , China
| | - Zhang Jianli
- c Department of General Surgery , The Affiliated Hospital of Qingdao University , Shandong , China
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Baicalin attenuates chronic hypoxia-induced pulmonary hypertension via adenosine A 2A receptor-induced SDF-1/CXCR4/PI3K/AKT signaling. J Biomed Sci 2017; 24:52. [PMID: 28774332 PMCID: PMC5543745 DOI: 10.1186/s12929-017-0359-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 07/28/2017] [Indexed: 11/28/2022] Open
Abstract
Background Baicalin, an important flavonoid in Scutellaria baicalensis Georgi extracts, exerts a variety of pharmacological effects. In this study, we explored the effects of baicalin on chronic hypoxia-induced pulmonary arterial hypertension (PAH) and investigated the mechanism underlying these effects. Moreover, we examined whether the inflammatory response was mediated by the A2A receptor (A2AR) and stromal cell-derived factor-1 (SDF-1)/C-X-C chemokine receptor type 4 (CXCR4)-induced phosphatidyl inositol-3-kinase (PI3K) signaling in vivo. Methods We established a hypoxia-induced pulmonary hypertension (HPH) mouse model by subjecting wild-type (WT) and A2AR knockout (A2AR−/−) animals to chronic hypoxia, and we examined the effects of a 4-week treatment with baicalin or the A2AR agonist CGS21680 in these animals. Invasive hemodynamic parameters, the right ventricular hypertrophy index, pulmonary congestion, the pulmonary arterial remodeling index, blood gas parameters, A2AR expression, and the expression of SDF-1/CXCR4/PI3K/protein kinase B (PKB; AKT) signaling components were measured. Results Compared with WT mice, A2AR−/− mice exhibited increased right ventricular systolic pressure (RVSP), right ventricle-to-left ventricle plus septum [RV/(LV + S)] ratio, RV weight-to-body weight (RV/BW) ratio, and lung wet weight-to-body weight (Lung/BW) ratio in the absence of an altered mean carotid arterial pressure (mCAP). These changes were accompanied by increases in pulmonary artery wall area and thickness and reductions in arterial oxygen pressure (PaO2) and hydrogen ion concentration (pH). In the HPH model, A2AR−/− mice displayed increased CXCR4, SDF-1, phospho-PI3K, and phospho-AKT expression compared with WT mice. Treating WT and A2AR−/− HPH mice with baicalin or CGS21680 attenuated the hypoxia-induced increases in RVSP, RV/(LV + S) and Lung/BW, as well as pulmonary arterial remodeling. Additionally, baicalin or CGS21680 alone could reverse the hypoxia-induced increases in CXCR4, SDF-1, phospho-PI3K, and phospho-AKT expression. Moreover, baicalin improved the hypoxemia induced by 4 weeks of hypoxia. Finally, we found that A2AR levels in WT lung tissue were enhanced by hypoxia and that baicalin up-regulated A2AR expression in WT hypoxic mice. Conclusions Baicalin exerts protective effects against clinical HPH, which are partly mediated through enhanced A2AR activity and down-regulated SDF-1/CXCR4-induced PI3K/AKT signaling. Therefore, the A2AR may be a promising target for baicalin in treating HPH.
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Xiang H, Zhang Q, Qi B, Tao X, Xia S, Song H, Qu J, Shang D. Chinese Herbal Medicines Attenuate Acute Pancreatitis: Pharmacological Activities and Mechanisms. Front Pharmacol 2017; 8:216. [PMID: 28487653 PMCID: PMC5403892 DOI: 10.3389/fphar.2017.00216] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 04/06/2017] [Indexed: 12/12/2022] Open
Abstract
Acute pancreatitis (AP) is a commonly occurring gastrointestinal disorder. An increase in the annual incidence of AP has been observed, and it causes acute hospitalization and high mortality. The diagnosis and treatment guidelines for AP recommend conservative medical treatments focused on reducing pancreatic secretion and secondary injury, as a primary therapeutic approach. Unfortunately, the existing treatment options have limited impact on the incidence and severity of AP due to the complex and multifaceted pathological process of this disease. In recent decades, Chinese herbal medicines (CHMs) have been used as efficient therapeutic agents to attenuate AP in Asian countries. Despite early cell culture, animal models, and clinical trials, CHMs are capable of interacting with numerous molecular targets participating in the pathogenesis of AP; however, comprehensive, up-to-date communication in this field is not yet available. This review focuses on the pharmacological activities of CHMs against AP in vitro and in vivo and the underlying mechanisms. A computational prediction of few selected and promising plant-derived molecules (emodin, baicalin, resveratrol, curcumin, ligustrazine, and honokiol) to target numerous proteins or networks involved in AP was initially established based on a network pharmacology simulation. Moreover, we also summarized some potential toxic natural products for pancreas in order to more safe and reasonable medication. These breakthrough findings may have important implications for innovative drug research and the future development of treatments for AP.
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Affiliation(s)
- Hong Xiang
- College (Institute) of Integrative Medicine, Dalian Medical UniversityDalian, China
| | - Qingkai Zhang
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical UniversityDalian, China
| | - Bing Qi
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical UniversityDalian, China
| | - Xufeng Tao
- College of Pharmacy, Dalian Medical UniversityDalian, China
| | - Shilin Xia
- Clinical Laboratory of Integrative Medicine, The First Affiliated Hospital of Dalian Medical UniversityDalian, China
| | - Huiyi Song
- Clinical Laboratory of Integrative Medicine, The First Affiliated Hospital of Dalian Medical UniversityDalian, China
| | - Jialin Qu
- Clinical Laboratory of Integrative Medicine, The First Affiliated Hospital of Dalian Medical UniversityDalian, China
| | - Dong Shang
- College (Institute) of Integrative Medicine, Dalian Medical UniversityDalian, China.,Department of General Surgery, The First Affiliated Hospital of Dalian Medical UniversityDalian, China
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Mateu A, Ramudo L, Manso M, De Dios I. Cross-talk between TLR4 and PPARγ pathways in the arachidonic acid-induced inflammatory response in pancreatic acini. Int J Biochem Cell Biol 2015; 69:132-41. [DOI: 10.1016/j.biocel.2015.10.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 09/21/2015] [Accepted: 10/22/2015] [Indexed: 12/16/2022]
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Gao Q, Liang N. Integrated traditional Chinese medicine improves acute pancreatitis via the downregulation of PRSS1 and SPINK1. Exp Ther Med 2015; 9:947-954. [PMID: 25667658 PMCID: PMC4316909 DOI: 10.3892/etm.2015.2191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Accepted: 12/19/2014] [Indexed: 12/14/2022] Open
Abstract
Integrated traditional Chinese medicine (ITCM) is known to improve health in patients with acute pancreatitis (AP); however, the molecular mechanisms underlying this effect are unknown. AP is associated with the expression of PRSS1 and SPINK1. Thus, the present study aimed to investigate whether ITCM was able to ameliorate AP by regulating the expression levels of protein, serine 1 (PRSS1) and serine peptidase inhibitor, Kazal type 1 (SPINK1). A total of 100 AP patients were divided at random into two groups. The treatment group were treated externally with a herbal ITCM preparation, while the control group received a routine placebo treatment. The mRNA and protein expression levels of PRSS1 and SPINK1 were subsequently compared between the two groups. The results revealed that the health of the patients who had received ITCM improved significantly when compared with the control group patients (P<0.05). In addition, the expression levels of PRSS1 and SPINK1 were found to be lower in the treatment group when compared with the control group (P<0.05). Therefore, ITCM exhibited a significant therapeutic effect on AP and produced no side effects since the treatment was applied externally. ITCM may ameliorate AP by downregulating the expression of PRSS1 and SPINK1; thus, should be considered as a potential therapy for the development of drugs against AP.
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Affiliation(s)
- Qiang Gao
- Physician Department, Health Service Center, Nyalam, Tibet 858300, P.R. China ; Gastroenterology Department, Yantai Hospital of Traditional Chinese Medicine, Yantai, Shandong 264002, P.R. China
| | - Nusheng Liang
- Department of Gastroenterology, First Hospital of Tianjin, Tianjin 300193, P.R. China
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LIU LIHUA, LIAO PINGPING, WANG BIN, FANG XIN, LI WEI, GUAN SIMING. Baicalin inhibits the expression of monocyte chemoattractant protein-1 and interleukin-6 in the kidneys of apolipoprotein E-knockout mice fed a high cholesterol diet. Mol Med Rep 2015; 11:3976-80. [DOI: 10.3892/mmr.2015.3186] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 11/25/2014] [Indexed: 11/06/2022] Open
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Jiang X, Xu J, Zou D, Yang L, Wang Y. Baicalin influences the dendritic morphology of newborn neurons in the hippocampus of chronically stressed rats. Neural Regen Res 2014; 8:496-505. [PMID: 25206692 PMCID: PMC4146053 DOI: 10.3969/j.issn.1673-5374.2013.06.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Accepted: 01/15/2013] [Indexed: 11/18/2022] Open
Abstract
Chronic stress models, established in adult Sprague-Dawley rats through a 14-day subcutaneous injection of 40 mg/kg corticosterone, once per day, were given a daily oral feeding of 50 mg/kg baicalin. The study was an attempt to observe the effect of baicalin on neurogenesis in chronically stressed rats. Results showed that subcutaneous injection of corticosterone significantly decreased the total number of doublecortin-positive neurons in the hippocampus. The reduced cell number caused by corticosterone was mainly due to the decrease of class II doublecortin-positive neurons, but the class I doublecortin-positive neurons were unaffected. Baicalin treatment increased the number of both class I and class II doublecortin-positive neurons. In addition, doublecortin-positive neurons showed less complexity in dendritic morphology after corticosterone injection, and this change was totally reversed by baicalin treatment. These findings suggest that baicalin exhibits a beneficial effect on adult neurogenesis.
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Affiliation(s)
- Xinghua Jiang
- Department of Anesthesiology, the Second Xiangya Hospital of Central South University, Changsha 410011, Hunan Province, China
| | - Junmei Xu
- Department of Anesthesiology, the Second Xiangya Hospital of Central South University, Changsha 410011, Hunan Province, China
| | - Dingquan Zou
- Department of Anesthesiology, the Second Xiangya Hospital of Central South University, Changsha 410011, Hunan Province, China
| | - Lin Yang
- Department of Anesthesiology, the Second Xiangya Hospital of Central South University, Changsha 410011, Hunan Province, China
| | - Yaping Wang
- Department of Anesthesiology, the Second Xiangya Hospital of Central South University, Changsha 410011, Hunan Province, China
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Pei Z, Wang B, Zhang F, Niu Z, Shi S, Cannon RD, Mei L. Response of Human Periodontal Ligament Cells to Baicalin. J Periodontol 2014; 85:1283-90. [DOI: 10.1902/jop.2014.130635] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Baicalin improves survival in a murine model of polymicrobial sepsis via suppressing inflammatory response and lymphocyte apoptosis. PLoS One 2012; 7:e35523. [PMID: 22590504 PMCID: PMC3348138 DOI: 10.1371/journal.pone.0035523] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Accepted: 03/20/2012] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND An imbalance between overwhelming inflammation and lymphocyte apoptosis is the main cause of high mortality in patients with sepsis. Baicalin, the main active ingredient of the Scutellaria root, exerts anti-inflammatory, anti-apoptotic, and even antibacterial properties in inflammatory and infectious diseases. However, the therapeutic effect of baicalin on polymicrobial sepsis remains unknown. METHODOLOGY/PRINCIPAL FINDINGS Polymicrobial sepsis was induced by cecal ligation and puncture (CLP) in C57BL/6 mice. Mice were infused with baicalin intraperitoneally at 1 h, 6 h and 12 h after CLP. Survival rates were assessed over the subsequent 8 days. Bacterial burdens in blood and peritoneal cavity were calculated to assess the bacterial clearance. Neutrophil count in peritoneal lavage fluid was also calculated. Injuries to the lung and liver were detected by hematoxylin and eosin staining. Levels of cytokines, including tumor necrosis factor (TNF)-alpha, interleukin (IL)-6, IL-10 and IL-17, in blood and peritoneum were measured by enzyme-linked immunosorbent assay. Adaptive immune function was assessed by apoptosis of lymphocytes in the thymus and counts of different cell types in the spleen. Baicalin significantly enhanced bacterial clearance and improved survival of septic mice. The number of neutrophils in peritoneal lavage fluid was reduced by baicalin. Less neutrophil infiltration of the lung and liver in baicalin-treated mice was associated with attenuated injuries to these organs. Baicalin significantly reduced the levels of proinflammatory cytokines but increased the level of anti-inflammatory cytokine in blood and peritoneum. Apoptosis of CD3(+) T cell was inhibited in the thymus. The numbers of CD4(+), CD8(+) T lymphocytes and dendritic cells (DCs) were higher, while the number of CD4(+)CD25(+) regulatory T cells was lower in the baicalin group compared with the CLP group. CONCLUSIONS/SIGNIFICANCE Baicalin improves survival of mice with polymicrobial sepsis, and this may be attributed to its antibacterial property as well as its anti-inflammatory and anti-apoptotic effects.
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Jingmin O, Xiping Z, Chun W, Ping Y, Qian Y. Study of dexamethasone, baicalin and octreotide on brain injury of rats with severe acute pancreatitis. Inflamm Res 2011; 61:265-75. [PMID: 22166920 DOI: 10.1007/s00011-011-0408-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2010] [Revised: 11/05/2011] [Accepted: 11/28/2011] [Indexed: 01/14/2023] Open
Abstract
OBJECTIVE To investigate the protecting effects of dexamethasone (DXM), baicalin and octreotide on brain injury of rats with severe acute pancreatitis (SAP) and explore their underlying mechanism. METHODS This experiment was divided into two different parts: (1) In the first part, 90 SAP rats were randomly divided into a model control group and a DXM treated group (n = 45, respectively). (2) In the second part, 135 SAP rats were randomly divided into a model control group, a baicalin treated group and an octreotide treated group (n = 45, respectively). In two different experiments, the same number of normal rats were considered as the sham-operated group (n = 45, respectively). At 3, 6 and 12 h after operation, the pathological changes in the brain were observed. The expression levels of nuclear factor-κB (NF-κB), Bax and Bcl-2 proteins were detected and apoptosis indexes were calculated, using brain tissue microarray section. RESULTS (1) First part: The expression levels of Bax and Bcl-2 were significantly higher in the DXM treated group than those in the model control group at different time points, while the content of NF-κB protein and pathological changes were significantly lower in the treated group than those in the model control group (P < 0.05, P < 0.01 or P < 0.001). But the apoptotic indexes of brain tissue were not significantly different at different time points (P > 0.05). (2) Second part: At all time points after operation, the expression levels of NF-κB in the brain of treated groups were, to varying degrees, significantly lower than those in the model control group while the expression levels of Bcl-2 protein in baicalin and octreotide group were significantly higher than those in model control group (P < 0.01, P < 0.01 and P < 0.05, respectively). At 12 h after operation, the expression level of Bax protein in baicalin treated group was significantly higher than those in model control group and octreotide treated group (P < 0.05 and P < 0.01, respectively). CONCLUSIONS Dexamethasone, baicalin and octreotide can exert protective effects against brain injury in SAP rats mainly through inhibiting the expression of NF-κB protein.
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Affiliation(s)
- Ou Jingmin
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
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Sahebkar A. Baicalin as a potentially promising drug for the management of sulfur mustard induced cutaneous complications: a review of molecular mechanisms. Cutan Ocul Toxicol 2011; 31:226-34. [PMID: 22107027 DOI: 10.3109/15569527.2011.633950] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Sulfur mustard (SM) is a bifunctional alkylating agent with strong blistering, irritant, mutagenic and cytotoxic properties. SM has been widely deployed as a chemical warfare agent for over a century, leading to extensive casualties. Skin is among the first and most heavily damaged organs upon SM exposure. Unfortunately, a considerable fraction of SM-intoxicated patients are still suffering from chronic cutaneous complications. While these complications adversely affect patients' quality of life, there is as yet no ideal treatment for them and therapeutic options are limited and mainly symptomatic. During recent decades, remarkable progress has been made in understanding molecular mechanisms underlying SM-induced dermatotoxicity and several intra- and extracellular targets have been identified. This review argues that baicalin, a bioactive flavonoid from the roots of Scutellaria spp., could counteract different molecular and biochemical abnormalities that mediate SM dermatotoxicity and could therefore be regarded as a promising therapeutic option for the management of SM-induced cutaneous lesions.
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Affiliation(s)
- Amirhossein Sahebkar
- Biotechnology Research Center and School of Pharmacy, Mashhad University of Medical Sciences (MUMS), Mashhad, Iran.
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Srinivas NR. Baicalin, an emerging multi-therapeutic agent: pharmacodynamics, pharmacokinetics, and considerations from drug development perspectives. Xenobiotica 2010; 40:357-67. [PMID: 20230189 DOI: 10.3109/00498251003663724] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Baicalin was extensively researched for utility in a number of therapeutic areas owing to its anti-inflammatory, anti-oxidant, anti-bacterial, and anti-cancer properties. A number of preclinical studies, in vitro work, and mechanistic studies were performed to understand the absorption, distribution, metabolism, and excretion profiles of baicalin. The absorption of baicalin involved several complexities: the restriction to two distant sites; the conversion of baicalin to baicalein; the possible role of transporter(s); and enhanced absorption due to breakdown of conjugates by beta-glucuronidase. Limited distribution data suggest that baicalin reached several sites such as the brain, eye lens, thymus, etc. Hepatobiliary recycling also served as a distribution phase for sustained delivery of baicalin. Metabolism data suggest the rapid conversion of baicalin to baicalein, which was extensively subjected to Phase 2 metabolism, conjugates baicalein glucuronide/sulfate have been identified. Limited excretion data suggest involvement of renal and faecal routes--glucuronide and sulfate conjugates were excreted in urine and faeces (via biliary excretion). The published data on baicalin suggest imminent challenges for developing baicalin and/or during co-administration with other agents. These challenges are absorption related (transporter or changes in the microenvironment), metabolism related (CYP2B6 induction and/or CYP2E1 inhibition), and excretion/efflux related (competitive biliary pathway and/or OATP1B1 transport).
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