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Knorr S, Rauschenberger L, Muthuraman M, McFleder R, Ott T, Grundmann-Hauser K, Higuchi T, Volkmann J, Ip CW. Disturbed brain energy metabolism in a rodent model of DYT-TOR1A dystonia. Neurobiol Dis 2024; 194:106462. [PMID: 38442845 DOI: 10.1016/j.nbd.2024.106462] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/21/2024] [Accepted: 03/01/2024] [Indexed: 03/07/2024] Open
Abstract
DYT-TOR1A (DYT1) dystonia, characterized by reduced penetrance and suspected environmental triggers, is explored using a "second hit" DYT-TOR1A rat model. We aim to investigate the biological mechanisms driving the conversion into a dystonic phenotype, focusing on the striatum's role in dystonia pathophysiology. Sciatic nerve crush injury was induced in ∆ETorA rats, lacking spontaneous motor abnormalities, and wild-type (wt) rats. Twelve weeks post-injury, unbiased RNA-sequencing was performed on the striatum to identify differentially expressed genes (DEGs) and pathways. Fenofibrate, a PPARα agonist, was introduced to assess its effects on gene expression. 18F-FDG autoradiography explored metabolic alterations in brain networks. Low transcriptomic variability existed between naïve wt and ∆ETorA rats (17 DEGs). Sciatic nerve injury significantly impacted ∆ETorA rats (1009 DEGs) compared to wt rats (216 DEGs). Pathway analyses revealed disruptions in energy metabolism, specifically in fatty acid β-oxidation and glucose metabolism. Fenofibrate induced gene expression changes in wt rats but failed in ∆ETorA rats. Fenofibrate increased dystonia-like movements in wt rats but reduced them in ∆ETorA rats. 18F-FDG autoradiography indicated modified glucose metabolism in motor and somatosensory cortices and striatum in both ∆ETorA and wt rats post-injury. Our findings highlight perturbed energy metabolism pathways in DYT-TOR1A dystonia, emphasizing compromised PPARα agonist efficacy in the striatum. Furthermore, we identify impaired glucose metabolism in the brain network, suggesting a potential shift in energy substrate utilization in dystonic DYT-TOR1A rats. These results contribute to understanding the pathophysiology and potential therapeutic targets for DYT-TOR1A dystonia.
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Affiliation(s)
- Susanne Knorr
- Department of Neurology, University Hospital Würzburg, 97080, Germany
| | | | | | - Rhonda McFleder
- Department of Neurology, University Hospital Würzburg, 97080, Germany
| | - Thomas Ott
- Institute for Medical Genetics and Applied Genomics, University of Tübingen, 72076, Germany; Core Facility Transgenic Animals, University Hospital of Tübingen, 72076, Germany; Max Planck Institute for Biological Cybernetics, Tübingen, 72076, Germany
| | - Kathrin Grundmann-Hauser
- Institute for Medical Genetics and Applied Genomics, University of Tübingen, 72076, Germany; Centre for Rare Diseases, University of Tübingen, 72076, Germany
| | - Takahiro Higuchi
- Department of Nuclear Medicine, University Hospital Würzburg, 97080, Germany
| | - Jens Volkmann
- Department of Neurology, University Hospital Würzburg, 97080, Germany
| | - Chi Wang Ip
- Department of Neurology, University Hospital Würzburg, 97080, Germany.
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Zhou X, Guo S, Pan W, Zhang L, Ji H, Yang Y. The small screw-apex distance is potentially associated with femoral head osteonecrosis in adults with femoral neck fractures treated by closed reduction and percutaneous 3 parallel cannulated screws. BMC Musculoskelet Disord 2024; 25:286. [PMID: 38614975 PMCID: PMC11015589 DOI: 10.1186/s12891-024-07380-7] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/22/2024] [Indexed: 04/15/2024] Open
Abstract
OBJECTIVE Femoral neck fractures (FNFs) are among the most common fractures in elderly individuals. Surgery is the main treatment for FNFs, and osteonecrosis of the femoral head (ONFH) is one of the unacceptable complications. This study aimed to assess both the clinical and radiological outcomes in patients with FNFs treated with three parallel cannulated screws and to identify relationship between screws position and ONFH. PATIENTS AND METHODS A total of 100 patients who were treated with closed reduction and fixed with 3 parallel cannulated screws met the inclusion criteria between January 2014 and December 2020 at authors' institution. The follow-up duration, age, sex, affected side, and injury-to-surgery interval were collected; the neck-shaft angle of both hips, screw-apex distance (SAD) and the tip-apex distance (TAD)were measured; and the Garden classification, quality of reduction and presence of ONFH were evaluated. RESULTS The sample consisted of 37 males and 63 females, with 60 left and 40 right hips affected. The mean age of patients was 54.93 ± 12.24 years, and the mean follow-up was 56.3 ± 13.38 months. The overall incidence of ONFH was 13%. No significant difference was observed in the incidence of ONFH by affected side, age, fracture displacement, injury-to-surgery interval, neck-shaft angle deviation, or reduction quality. The SAD was significantly shorter in ONFH patients than in normal patients for all three screws (p = 0.02, 0.02, and 0.01, respectively). CONCLUSIONS The short SAD of all screws is associated with femoral head necrosis of FNFs treated with 3 cannulated screws. The short SAD indicated that screws malpositioning in the weight-bearing area of the femoral head, potentially harming the blood supply and compromising the anchorage of the primary compressive trabeculae in this region.
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Affiliation(s)
- Xiaoxiao Zhou
- Department of Orthopedics, Jiangwan Hospital of Hongkou District of Shanghai, Shanghai, China
| | - Shengyang Guo
- Department of Orthopedics, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
| | - Wenjun Pan
- Department of Orthopedics, Taizhou Hospital of Zhejiang Province, Affiliated to Wenzhou Medical University, No. 150 Ximen Street, Linhai City, 317000, Zhejiang Province, China
| | - Linyuan Zhang
- Department of Orthopedics, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
| | - Houlin Ji
- Jinji Lake Community Health Service Center of Suzhou Industrial Park, Jiangsu, 215000, China
| | - Yang Yang
- Department of Orthopedics, Taizhou Hospital of Zhejiang Province, Affiliated to Wenzhou Medical University, No. 150 Ximen Street, Linhai City, 317000, Zhejiang Province, China.
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Wang T, Tang W, Zhao Z, Zhao R, Lv Z, Guo X, Gu Q, Liu B, Lv H, Chen J, Zhang K, Li F, Wang J. Fenofibrate Recognition and G q Protein Coupling Mechanisms of the Human Cannabinoid Receptor CB1. Adv Sci (Weinh) 2024; 11:e2306311. [PMID: 38298116 PMCID: PMC11005724 DOI: 10.1002/advs.202306311] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 12/21/2023] [Indexed: 02/02/2024]
Abstract
The G-protein-coupled human cannabinoid receptor 1 (CB1) is a promising therapeutic target for pain management, inflammation, obesity, and substance abuse disorders. The structures of CB1-Gi complexes in synthetic agonist-bound forms have been resolved to date. However, the commercial drug recognition and Gq coupling mechanisms of CB1 remain elusive. Herein, the cryo-electron microscopy (cryo-EM) structure of CB1-Gq complex, in fenofibrate-bound form, at near-atomic resolution, is reported. The structure elucidates the delicate mechanisms of the precise fenofibrate recognition and Gq protein coupling by CB1 and will facilitate future drug discovery and design.
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Affiliation(s)
- Tianxin Wang
- CAS Key Laboratory of Quantitative Engineering BiologyInstitute of Synthetic BiologyShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
- iHuman InstituteShanghaiTech University393 Middle Huaxia RoadPudongShanghai201210China
| | - Wenqin Tang
- Institute of BiophysicsChinese Academy of Sciences15 Datun RoadChaoyang DistrictBeijing100101China
- School of Life SciencesUniversity of Chinese Academy of SciencesBeijing100049China
- Key Laboratory of BiomacromoleculesChinese Academy of SciencesBeijing100101China
| | - Ziyi Zhao
- Institute of BiophysicsChinese Academy of Sciences15 Datun RoadChaoyang DistrictBeijing100101China
- School of Life SciencesUniversity of Chinese Academy of SciencesBeijing100049China
- Key Laboratory of BiomacromoleculesChinese Academy of SciencesBeijing100101China
| | - Ran Zhao
- Institute of BiophysicsChinese Academy of Sciences15 Datun RoadChaoyang DistrictBeijing100101China
- School of Life SciencesUniversity of Chinese Academy of SciencesBeijing100049China
- Key Laboratory of BiomacromoleculesChinese Academy of SciencesBeijing100101China
| | - Zhenyu Lv
- Institute of BiophysicsChinese Academy of Sciences15 Datun RoadChaoyang DistrictBeijing100101China
- Key Laboratory of BiomacromoleculesChinese Academy of SciencesBeijing100101China
| | - Xuzhen Guo
- CAS Key Laboratory of Quantitative Engineering BiologyInstitute of Synthetic BiologyShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
| | - Quanchang Gu
- Institute of BiophysicsChinese Academy of Sciences15 Datun RoadChaoyang DistrictBeijing100101China
- School of Life SciencesUniversity of Chinese Academy of SciencesBeijing100049China
- Key Laboratory of BiomacromoleculesChinese Academy of SciencesBeijing100101China
| | - Boxiang Liu
- iHuman InstituteShanghaiTech University393 Middle Huaxia RoadPudongShanghai201210China
| | - Haoyu Lv
- iHuman InstituteShanghaiTech University393 Middle Huaxia RoadPudongShanghai201210China
| | - Jiayan Chen
- iHuman InstituteShanghaiTech University393 Middle Huaxia RoadPudongShanghai201210China
| | - Kaiquan Zhang
- Institute of BiophysicsChinese Academy of Sciences15 Datun RoadChaoyang DistrictBeijing100101China
- Key Laboratory of BiomacromoleculesChinese Academy of SciencesBeijing100101China
| | - Fahui Li
- Institute of BiophysicsChinese Academy of Sciences15 Datun RoadChaoyang DistrictBeijing100101China
- School of Life SciencesUniversity of Chinese Academy of SciencesBeijing100049China
- Key Laboratory of BiomacromoleculesChinese Academy of SciencesBeijing100101China
| | - Jiangyun Wang
- Institute of BiophysicsChinese Academy of Sciences15 Datun RoadChaoyang DistrictBeijing100101China
- School of Life SciencesUniversity of Chinese Academy of SciencesBeijing100049China
- Key Laboratory of BiomacromoleculesChinese Academy of SciencesBeijing100101China
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Long Y, Zhao Z, Xie W, Shi J, Yang F, Zhu D, Jiang P, Tang Q, Ti Z, Jiang B, Yang X, Gao G, Qi W. Kallistatin leads to cognition impairment via downregulating glutamine synthetase. Pharmacol Res 2024; 202:107145. [PMID: 38492829 DOI: 10.1016/j.phrs.2024.107145] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 03/09/2024] [Accepted: 03/13/2024] [Indexed: 03/18/2024]
Abstract
In many neurodegenerative disorders, such as Alzheimer's disease (AD), glutamate-mediated neuronal excitotoxicity is considered the basis for cognitive impairment. The mRNA and protein expression of SERPINA4(Kallistatin) are higher in patients with AD. However, whether Kallistatin plays a regulatory role in glutamate-glutamine cycle homeostasis remains unclear. In this study, we identified impaired cognitive function in Kallistatin transgenic (KAL-TG) mice. Baseline glutamate levels were elevated and miniature excitatory postsynaptic current (mEPSC) frequency was increased in the hippocampus, suggesting the impairment of glutamate homeostasis in KAL-TG mice. Mechanistically, we demonstrated that Kallistatin promoted lysine acetylation and ubiquitination of glutamine synthetase (GS) and facilitated its degradation via the proteasome pathway, thereby downregulating GS. Fenofibrate improved cognitive memory in KAL-TG mice by downregulating serum Kallistatin. Collectively, our study findings provide insights the mechanism by which Kallistatin regulates cognitive impairment, and suggest the potential of fenofibrate to prevente and treat of AD patients with high levels of Kallistatin.
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Affiliation(s)
- Yanlan Long
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Zhen Zhao
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Wanting Xie
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Jinhui Shi
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Fengyu Yang
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Dan Zhu
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Ping Jiang
- Department of Clinical Medical Laboratory, Guangzhou First People Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Qilong Tang
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Zhou Ti
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Bin Jiang
- Guangdong Province Key Laboratory of Brain Function and Disease, School of Medicine, Sun Yat-sen University, Shenzhen, China.
| | - Xia Yang
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
| | - Guoquan Gao
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; China Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Ministry of Education, Guangzhou, China; Guangdong Provincial Key Laboratory of Diabetology, Guangzhou, Guangdong, China.
| | - Weiwei Qi
- Department of Biochemistry and Molecular Biology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; Guangdong Engineering & Technology Research Center for Gene Manipulation and Biomacromolecular Products (Sun Yat-sen University), Guangzhou, China; Advanced Medical Technology Center, The First Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, China.
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Wu T, Shi Y, Zhu B, Li D, Li Z, Zhao Z, Zhang Y. Pregnancy-related adverse events associated with statins: a real-world pharmacovigilance study of the FDA Adverse Event Reporting System (FAERS). Expert Opin Drug Saf 2024; 23:313-321. [PMID: 37612600 DOI: 10.1080/14740338.2023.2251888] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 08/01/2023] [Accepted: 08/09/2023] [Indexed: 08/25/2023]
Abstract
BACKGROUND Statins, previously rated as pregnancy category X agents, were contraindicated during pregnancy due to the teratogenic effects observed in animal studies. However, it is still controversial whether statins have detrimental impact on pregnant women or not, and some studies even suggest a potential benefit of statin use against pregnancy complications. The aim of this study was to explore whether maternal exposure to statins is associated with increased rates of pregnancy-related adverse events (AEs), including abortion, abortion spontaneous, preterm birth, low birth weight, stillbirth/fetal death, and fetal complications. RESEARCH DESIGN AND METHODS Data from 1 January 2004 to 30 June 2022 were extracted through the U.S. FDA Adverse Event Reporting System (FAERS) database, to conduct disproportionality analysis and Bayesian analysis by reporting odds ratio (ROR) and Bayesian confidence propagation neural network (BCPNN) algorithms. To identify the potential risks of pregnancy-related AEs, each statin was compared to all the other drugs, all the other statins, and the reference drugs (fenofibrate and evolocumab). RESULTS A total of 477 cases involving pregnancy-related AEs associated with stains were submitted to the FAERS database by healthcare professionals. No obvious disproportionate association of abortion, abortion spontaneous, or stillbirth/fetal death was identified for all statins during gestation. In comparison with all the other drugs, lovastatin showed an increased risk of fetal complications (ROR = 2.45, 95% CI, 1.22-4.95; IC025 = 0.63), and pravastatin demonstrated increased risks of preterm birth (ROR = 4.89, 95% CI, 3.65-6.54; IC025 = 1.69) and low birth weight (ROR = 9.60, 95% CI, 5.56-16.56; IC025 = 1.88). Similar results were found when compared lovastatin or pravastatin with fenofibrate. Furthermore, statins were associated with higher proportion of fetal complications and preterm birth when comparing with evolocumab. CONCLUSIONS Statins did not increase the risk of pregnancy-related AEs, including abortion, abortion spontaneous, or stillbirth/fetal death. However, we did find significant disproportionality signals for preterm birth and low birth weight associated with pravastatin, and lovastatin was related to a higher proportion of fetal complications. The results in this study may provide evidence on the safety of statins during pregnancy, which need to be verified in further investigations.
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Affiliation(s)
- Tingxi Wu
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yanfeng Shi
- Center of excellence for Omics Research, National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Bin Zhu
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Dandan Li
- Department of Pharmacy, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Zhe Li
- Department of Pharmacy, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Zhigang Zhao
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yang Zhang
- Department of Pharmacy, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
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Jin Y, Yin B, Shu L, Fan Z, Sherrier MC, Liu C, Sun H, Zhang W. Morphological characteristics of femoral neck fractures in young and middle-aged population: a retrospective descriptive study. BMC Musculoskelet Disord 2024; 25:100. [PMID: 38287282 PMCID: PMC10823608 DOI: 10.1186/s12891-024-07207-5] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/15/2024] [Indexed: 01/31/2024] Open
Abstract
BACKGROUND A understanding of morphological characteristics are important to femoral neck fractures (FNFs) resulting in high rates of complications in the young and middle-aged adults and the detailed data is lack in the literature. We aimed to report on the detailed morphological characteristics and the relationship between them in young and middle-aged adults with femoral neck fractures (FNFs). METHODS The postoperative CT images of one hundred and fifty-two adults with FNFs were retrospectively reviewed. After image standardization, morphological characteristics including fracture orientation, cortex comminution, and intraosseous bone defects were measured and analyzed. Additionally, the distribution and correlation of these morphological features were analyzed using Pauwels classification, the right angle of the neck axis (VNA) classification, and the anteromedial oblique angle (AMA). RESULTS Pauwels III fractures accounted for approximately half (55.2%) of the FNFs analyzed. Pauwels II and III could be detected in all four VNA types, and the distribution of the Pauwels types in VNA classification showed significant differences (χ2 = 106.363, p < 0.001). The VNA (9.0° ± 12.1) showed positive correlation with the neck-shaft angle (139.5° ± 6.3) and modified Pauwels angle (49.8° ± 10.6) (r = 0.441, r = 0.855, all p < 0.001). Cortical comminutions were commonly observed in the posterior (86.7%) and the inferior (80.7%). AMAs within the cases without posterior and inferior cortex comminutions were significantly larger than those with comminution (t = 2.594, 2.1196; p = 0.01, 0.036), but no difference could be detected after the AMA being divided into three groups (< 85°, 85°-95°, > 95°). The MPA, VNA and AMA of the group with an intraosseous defect were significantly different compared with those without (t = 2.847, 2.314, 2.268; p = 0.005, 0.022,0.025). The incidence of intraosseous defects within the groups with coronal and axial cortex comminutions were significantly higher than those within the groups without comminutions (χ2 = 34.87, 25.303; p < 0.001). CONCLUSIONS The present study highlights the morphological diversity and complexity within FNFs in young and middle-aged adults, which allows for more accurate simulation of FNF patterns in the future biomechanical studies.
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Affiliation(s)
- Yingzhe Jin
- Orthopedic Department, The Affiliated Lihuili Hospital of Ningbo University, 1111 JiangNan Road, Ningbo, 315040, China
| | - Bohao Yin
- Department of Orthopaedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 YiShan Road, Shanghai, 200233, China
| | - Linyuan Shu
- Department of Emergency Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 YiShan Road, Shanghai, 200233, China
| | - Zhiyuan Fan
- Department of Orthopaedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 YiShan Road, Shanghai, 200233, China
| | - Matthew C Sherrier
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Chenjun Liu
- Department of Orthopaedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 YiShan Road, Shanghai, 200233, China
| | - Hui Sun
- Department of Orthopaedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 YiShan Road, Shanghai, 200233, China.
| | - Wei Zhang
- Department of Orthopaedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 YiShan Road, Shanghai, 200233, China.
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Meng T, Sudarjat H, Momin M, Ma JX, Xu Q. Development of uniform fenofibrate-loaded biodegradable microparticle by membrane emulsification. Int J Pharm 2024; 650:123675. [PMID: 38061500 PMCID: PMC10843658 DOI: 10.1016/j.ijpharm.2023.123675] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/09/2023] [Accepted: 12/03/2023] [Indexed: 12/17/2023]
Abstract
Fenofibrate has shown therapeutic effects on diabetic retinopathy. However, fenofibrate can be rapidly cleared from the eye after a single intravitreal injection. Here, we aim to develop fenofibrate loaded PLGA microparticles (Feno-MP) with high drug loading and sustained in vitro release up to 6 months suitable for intravitreal injection. First, orthogonal array experimental design was applied for formulation optimization. The selected formulation parameters were used to formulate Feno-MP using homogenization method and direct membrane emulsification method. Both methods generated Feno-MP with high drug loading and sustained in vitro drug release more than 140 days. Unlike the polydisperse Feno-MP prepared using homogenization method, membrane emulsification method generated Feno-MP with uniform size distribution. By controlling the membrane pore size, 1.5 µm, 8 µm and 16 µm Feno-MP were formulated and we found that larger Feno-MP demonstrated higher drug loading, more sustained drug release in vitro with less burst drug release than the smaller Feno-MP. In conclusion, we developed Feno-MP with high drug loading and sustained release profile, and elucidated that changing the particle size could have notable impacts on drug loading and release kinetics. Formulating Feno-MP with uniform size distribution by membrane emulsification method would benefit the batch-to-batch repeatability.
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Affiliation(s)
- Tuo Meng
- Department of Pharmaceutics, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Hadi Sudarjat
- Department of Pharmaceutics, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Mohammad Momin
- Department of Pharmaceutics, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Jian-Xing Ma
- Department of Biochemistry, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA
| | - Qingguo Xu
- Department of Pharmaceutics, Virginia Commonwealth University, Richmond, VA 23298, USA; Department of Ophthalmology, Virginia Commonwealth University, Richmond, VA 23298, USA; Center for Pharmaceutical Engineering, and Institute for Structural Biology, Drug Discovery & Development (ISB3D), Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA.
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8
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Liu G, Yang C, Wang R, Tang J, Wu H, Wei L, Hu J. Application of robot navigation system for insertion of femoral neck system in the treatment of femoral neck fracture. BMC Musculoskelet Disord 2024; 25:47. [PMID: 38200451 PMCID: PMC10777528 DOI: 10.1186/s12891-024-07172-z] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 01/04/2024] [Indexed: 01/12/2024] Open
Abstract
PURPOSE To evaluate the short-term clinical efficacy and advantages of surgery robot positioning system for insertion of Femoral Neck System (FNS) in the treatment of femoral neck fractures. METHODS The clinical data of 52 patients with Femoral neck fracture (FNF) who had been treated with FNS between June 2020 and September 2021 were retrospectively analyzed. Among them, 26 patients were treated with traditional FNS (control group), while 26 additional patients were treated with FNS assisted by an orthopaedic robot positioning system (study group). The operation duration, frequency of key-guide needle placement, intraoperative blood loss, incision length, fracture healing rate, fracture healing time, and the Harris scores at the last follow-up were calculated and compared between the 2 groups. RESULTS The study group had shorter operation duration, fewer numbers of placing the key-guide needle, less intraoperative blood loss, and smaller surgical incisions than the control group (all, P < 0.05). There was no significant difference in the rate of fracture healing rate between the 2 groups (P = 0.47), while the fracture healing duration of the study group was shorter than that of the control group (P = 0.03). At the last follow-up, compared with the control group, the Harris score and the number of excellent and good ratings were significantly higher in the study group (all, P < 0.05). CONCLUSIONS Using orthopaedic surgery robot positioning system-assisted FNS in the treatment of FNFs can effectively improve the efficiency of surgery, shorten operation time, and reduce the number of placing the key-guide needle, intraoperative blood loss, and operative trauma. Simultaneously, it shortens the duration of fracture healing and improves the recovery of hip function.
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Affiliation(s)
- Gang Liu
- Department of Trauma Center, Liuzhou Worker's Hospital, The Fourth Affiliated Hospital of Guangxi Medical University, Guangxi, 545005, China
| | - Chengzhi Yang
- Department of Trauma Center, Liuzhou Worker's Hospital, The Fourth Affiliated Hospital of Guangxi Medical University, Guangxi, 545005, China
| | - Renchong Wang
- Department of Trauma Center, Liuzhou Worker's Hospital, The Fourth Affiliated Hospital of Guangxi Medical University, Guangxi, 545005, China
| | - Jingli Tang
- Department of Trauma Center, Liuzhou Worker's Hospital, The Fourth Affiliated Hospital of Guangxi Medical University, Guangxi, 545005, China
| | - Hao Wu
- Department of Trauma Center, Liuzhou Worker's Hospital, The Fourth Affiliated Hospital of Guangxi Medical University, Guangxi, 545005, China
| | - Lu Wei
- Department of Trauma Center, Liuzhou Worker's Hospital, The Fourth Affiliated Hospital of Guangxi Medical University, Guangxi, 545005, China
| | - Juzheng Hu
- Department of Trauma Center, Liuzhou Worker's Hospital, The Fourth Affiliated Hospital of Guangxi Medical University, Guangxi, 545005, China.
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Yin BH, Liu CJ, Sherrier MC, Sun H, Zhang W. Compressive buttress compared with off-axial screw fixation for vertical femoral neck fractures in young adults: a prospective, randomized controlled trial. J Orthop Surg Res 2024; 19:42. [PMID: 38184587 PMCID: PMC10771671 DOI: 10.1186/s13018-023-04493-y] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/19/2023] [Indexed: 01/08/2024] Open
Abstract
BACKGROUND To compare the clinical outcomes of compressive buttress screw (CBS) fixation, a novel screw fixation strategy, to off-axial screw fixation (off-axial partial threaded cannulated screw, OPTCS) for vertical femoral neck fractures (FNFs) in young adults. METHODS A total of 146 adults younger than 55 years old with high-energy Pauwels type III FNFs were randomized to receive CBS fixation or OPTCS fixation. Primary outcomes were complication rates, including fixation failure, fracture nonunion, and avascular necrosis of the femoral head (ANFH) at 24 months after treatment. Fixation loosening, femoral neck shortening and varus collapse, patient function and quality of life using the Harris hip score (HHS), and EuroQol-5 dimensional-5 levels (EQ-5D-5L) questionnaire (including EQ-5D-5L and EQ-VAS) were assessed as secondary outcomes at 24 months. RESULTS CBS and OPTCS fixation groups were similar with regard to demographics at baseline. At 24 months, patients in the CBS fixation cohort had a significantly lower rate of fixation failure (10.5% vs. 25.0%, p = 0.041) and fracture nonunion (1.8% vs. 18.3%, p = 0.003) compared with patients who received OPTCS fixation. There was no difference in rate of ANFH (7.0% vs. 11.7%, p = 0.389) between groups. Additionally, patients managed with CBS fixation showed significantly less fixation loosening (19.3% vs. 58.3%, p < 0.001), less severe femoral neck shortening and varus collapse (10.5% vs. 25.0%, p = 0.007), higher HHS (93 vs. 83, p = 0.001) and more excellent grade (68.4% vs. 36.7%, p = 0.008), higher EQ-5D-5L (0.814 vs, 0.581, p < 0.001) and EQ-VAS (85 vs. 80, p = 0.002). CONCLUSION CBS screw fixation confers significantly lower complication rate in addition to higher functional and quality of life outcomes for young adults with high-energy FNF compared with OPTCS fixation. TRIAL REGISTRATION This prospective, randomized controlled trial was approved by the institutional review board of our center, Ethics Committee of Shanghai sixth people's Hospital, and registered at www.chictr.org.cn (Approval Number: ChiCTR1900026283; Registered 29 September 2019-Retrospectively registered, https://www.chictr.org.cn/showproj.html?proj=43164 ).
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Affiliation(s)
- Bo-Hao Yin
- Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
- Shanghai Sixth People's Hospital, National Center for Orthopaedics, Shanghai, 200233, China
| | - Chen-Jun Liu
- Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
- Shanghai Sixth People's Hospital, National Center for Orthopaedics, Shanghai, 200233, China
| | - Matthew C Sherrier
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Hui Sun
- Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.
- Shanghai Sixth People's Hospital, National Center for Orthopaedics, Shanghai, 200233, China.
| | - Wei Zhang
- Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.
- Shanghai Sixth People's Hospital, National Center for Orthopaedics, Shanghai, 200233, China.
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10
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Chao Y, Li N, Xiong S, Zhang G, Gao S, Dong X. Lipidomics based on liquid chromatography-high resolution mass spectrometry reveals the protective role of peroxisome proliferator-activated receptor alpha on kidney stone formation in mice treated with glyoxylate. J Sep Sci 2023; 46:e2300452. [PMID: 37880903 DOI: 10.1002/jssc.202300452] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 09/25/2023] [Accepted: 10/01/2023] [Indexed: 10/27/2023]
Abstract
Few studies have examined the relationship between lipid metabolism and kidney stone formation, particularly the role of key lipid regulatory factors in kidney stone formation. We evaluated the effect of the lipid regulatory factor-peroxisome proliferator-activated receptor alpha on the formation of renal stones in mice by injecting them with glyoxylate followed by treatment with either a peroxisome proliferator-activated receptor alpha agonist fenofibrate or an antagonist GW6471 (GW). Liquid chromatography coupled with trapped ion mobility spectrometry-quadrupole-time-of-flight mass spectrometry-based lipidomics was used to determine the lipid profile in the mouse kidneys. Histological and biochemical analyses showed that the mice injected with glyoxylate exhibited crystal precipitation and renal dysfunction. Crystallization decreased significantly in the fenofibrate group, whereas it increased significantly in the GW group. A total of 184 lipids, including fatty acyls, glycerolipids, glycerophospholipids, and sphingolipids differed significantly between the mice in the model and control groups. Peroxisome proliferator-activated receptor alpha activity negatively correlated with glyoxylate-induced kidney stone formation in mice, which may be related to improved fatty acid oxidation, maintenance of ceramide/complex sphingolipids cycle balance, and alleviation of disorder in phospholipid metabolism.
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Affiliation(s)
- Yufan Chao
- School of Medicine, Shanghai University, Shanghai, China
| | - Na Li
- School of Medicine, Shanghai University, Shanghai, China
| | - Shili Xiong
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, China
- Clinical Research Center, Shanghai Baoshan Luodian Hospital, Shanghai, China
| | - Guangbo Zhang
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Songyan Gao
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Xin Dong
- School of Medicine, Shanghai University, Shanghai, China
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11
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龚 顺, 杨 杰, 张 金, 吴 兴, 江 山, 张 誉, 龚 广, 吴 宁, 孙 见, 吴 遵. [Yacon root extract improves lipid metabolism in hyperlipidemic rats by inhibiting HMGCR expression and activating the PPAR α/CYP7A1/CPT-1 pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:1977-1983. [PMID: 38081618 PMCID: PMC10713474 DOI: 10.12122/j.issn.1673-4254.2023.11.20] [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] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Indexed: 12/18/2023]
Abstract
OBJECTIVE To investigate the effect of yacon root extract on lipid metabolism in rats with hyperlipidemia (HLP) and its underlying mechanisms. METHODS SD rat models of HLP induced by high- fat diet feeding for 8 weeks were randomized into the model group, fenofibrate treatment group (27 mg/kg), and yacon extract treatment groups at doses of 5, 2.5 and 1.25 g/kg (n=10). The rats were given corresponding drug treatments via gavage for 8 weeks. After the treatments, the rats were observed for body weight changes, liver coefficient, liver pathology, and serum levels of triglycerides (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C) and high-density lipoprotein cholesterol (HDL-C). The mRNA and protein expressions of HMGCR, PPARα, CYP7A1, and CPT-1 in the liver were detected using RT-qPCR and Western blotting. RESULTS Compared with those in the model group, the rats treated with fenofibrate and 5 g/kg yacon root extract showed significantly slower body weight gain and lower liver coefficient (P < 0.05) with lower serum levels of TG, TC, and LDL- C (P < 0.05) but higher HDL- C level (P < 0.05). The HLP rat models showed obvious fatty degeneration and vacuolar changes in the liver, which were significantly alleviated by fenofibrate treatment and by treatment with yacon root extract in a dose-dependent manner. Both fenofibrate and 5 g/kg yacon root extract significantly lowered the mRNA and protein expression levels of HMGCR (P < 0.001) and increased the expressions of PPARα, CYP7A1, and CPT-1 in the liver of HLP rats (P < 0.001). CONCLUSION Yacon root extract can reduce serum TG and TC levels in HLP rats possibly by inhibiting HMGCR expression and activating the PPARα/CYP7A1/CPT-1 signaling pathway, thereby promoting fatty acid β oxidation and bile acid metabolism.
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Affiliation(s)
- 顺航 龚
- />贵州医科大学基础医学院化学与生物化学实验室,贵州 贵阳 550025Laboratory of Chemistry and Biochemistry, School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China
| | - 杰 杨
- />贵州医科大学基础医学院化学与生物化学实验室,贵州 贵阳 550025Laboratory of Chemistry and Biochemistry, School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China
| | - 金涛 张
- />贵州医科大学基础医学院化学与生物化学实验室,贵州 贵阳 550025Laboratory of Chemistry and Biochemistry, School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China
| | - 兴林 吴
- />贵州医科大学基础医学院化学与生物化学实验室,贵州 贵阳 550025Laboratory of Chemistry and Biochemistry, School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China
| | - 山 江
- />贵州医科大学基础医学院化学与生物化学实验室,贵州 贵阳 550025Laboratory of Chemistry and Biochemistry, School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China
| | - 誉麟 张
- />贵州医科大学基础医学院化学与生物化学实验室,贵州 贵阳 550025Laboratory of Chemistry and Biochemistry, School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China
| | - 广斌 龚
- />贵州医科大学基础医学院化学与生物化学实验室,贵州 贵阳 550025Laboratory of Chemistry and Biochemistry, School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China
| | - 宁 吴
- />贵州医科大学基础医学院化学与生物化学实验室,贵州 贵阳 550025Laboratory of Chemistry and Biochemistry, School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China
| | - 见飞 孙
- />贵州医科大学基础医学院化学与生物化学实验室,贵州 贵阳 550025Laboratory of Chemistry and Biochemistry, School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China
| | - 遵秋 吴
- />贵州医科大学基础医学院化学与生物化学实验室,贵州 贵阳 550025Laboratory of Chemistry and Biochemistry, School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, China
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12
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Batista KS, Lima MDS, Francisco Alves A, Cavalcante HC, de Souza DM, de Oliveira GC, Toscano LT, Silva AS, Rodrigues JF, de Albuquerque Meireles BRL, de Magalhães Cordeiro AMT, Persuhn DC, de Souza Aquino J. Antioxidant potential of acerola by-product along the enterohepatic axis of rats fed a high-fat diet. Food Res Int 2023; 173:113380. [PMID: 37803718 DOI: 10.1016/j.foodres.2023.113380] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 08/14/2023] [Accepted: 08/16/2023] [Indexed: 10/08/2023]
Abstract
Acerola (Malpighia emarginata DC) by-product (ABP) has bioactive compounds that can provide antioxidant and hypolipidemic effects in vivo. In this study we aimed to evaluate the antioxidant potential of ABP on oxidative damage along the enterohepatic axis of rats fed a high-fat diet for 7 weeks. In addition, we analysed the phenolic compound profile in the enterohepatic axis, and the lipid accumulation in the liver, colon and liver tissue structure of high-fat diet-fed rats treated with fenofibrate drug (100 mg/kg) or ABP (400 mg/kg) via orogastric administration in the 4th to 7th weeks of the experiment. ABP had increased antioxidant potential in vitro and presented ascorbic acid (2022.06 μg/g), carotenoid (2.63 μg/g), and total phenolic compound (5366.44 μg/g) contents. The high-fat diet-fed rats that received ABP (compared to fenofibrate treatment) presented a non-significant reduction of 9.87% in guanine oxidation product, lower relative liver weight, degree of hepatic steatosis, and aspartate aminotransferase level in their blood. ABP also provided high-fat diet-fed rats: an increased amount of total phenolic compounds in caecal digesta (946.42 µg/g), faeces (3299.07 µg/g), colon (256.15 µg/g) and hepatic tissues (454.80 µg/g); higher total antioxidant capacity in plasma and colon; and lower lipid peroxidation in plasma, colonic and hepatic tissues. The results point to the potential antioxidant activity of ABP against oxidative damage along the enterohepatic axis caused by high-fat diet intake. The ABP had a greater protective effect on the healthy liver compared to fenofibrate treatment due to its bioactive compound content.
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Affiliation(s)
- Kamila Sabino Batista
- Experimental Nutrition Laboratory, Department of Nutrition, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil; Post Graduate Program in Nutrition Sciences, Federal University of Paraíba, João Pessoa, Paraíba, Brazil.
| | - Marcos Dos Santos Lima
- Food Technology Laboratory, Department of Food Technology, Federal Institute of the Sertão de Pernambuco (IFSertão-PE), Petrolina, Pernambuco, Brazil.
| | - Adriano Francisco Alves
- Laboratory of Pathology, Department of Physiology and Pathology, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil.
| | - Hassler Clementino Cavalcante
- Experimental Nutrition Laboratory, Department of Nutrition, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil; Post Graduate Program in Nutrition Sciences, Federal University of Paraíba, João Pessoa, Paraíba, Brazil.
| | - Danielle Melo de Souza
- Experimental Nutrition Laboratory, Department of Nutrition, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil; Post Graduate Program in Nutrition Sciences, Federal University of Paraíba, João Pessoa, Paraíba, Brazil.
| | - Guilherme Costa de Oliveira
- Bromatology Laboratory, Department of Nutrition, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil.
| | - Lydiane Tavares Toscano
- Laboratory of Physical Training Studies Applied to Performance and Health, Department of Physical Education, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil.
| | - Alexandre Sérgio Silva
- Laboratory of Physical Training Studies Applied to Performance and Health, Department of Physical Education, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil.
| | - Josuel Feitosa Rodrigues
- Experimental Nutrition Laboratory, Department of Nutrition, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil.
| | | | | | - Darlene Camati Persuhn
- Post Graduate Program in Nutrition Sciences, Federal University of Paraíba, João Pessoa, Paraíba, Brazil; Department of Molecular Biology, Federal University of Paraiba, João Pessoa, Paraíba, Brazil.
| | - Jailane de Souza Aquino
- Experimental Nutrition Laboratory, Department of Nutrition, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil; Post Graduate Program in Nutrition Sciences, Federal University of Paraíba, João Pessoa, Paraíba, Brazil.
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13
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Rao B, Januszewski AS, Brazionis L, O'Connell R, Aryal N, Shimmin G, O'Day J, Mitchell P, Colman PG, Keech AC, Jenkins AJ. No relationship between socioeconomic status, education level and development and progression of diabetic retinopathy in type 2 diabetes: a FIELD trial substudy. Intern Med J 2023; 53:2128-2131. [PMID: 37997276 DOI: 10.1111/imj.16270] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 09/16/2023] [Indexed: 11/25/2023]
Abstract
In 6002 Australian adults with type 2 diabetes and a median 5-year follow-up in the FIELD (Fenofibrate Intervention and Event Lowering in Diabetes) trial, baseline socioeconomic status (SES) and self-reported education level were not related to development of on-trial sight-threatening diabetic retinopathy. Similarly, in a retinal photography substudy (n = 549), two-step diabetic retinopathy progression was not related to SES or education.
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Affiliation(s)
- Ben Rao
- NHMRC Clinical Trials Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Medicine, Monash University, Melbourne, Victoria, Australia
| | - Andrzej S Januszewski
- NHMRC Clinical Trials Centre, The University of Sydney, Sydney, New South Wales, Australia
- Sydney Pharmacy School, The University of Sydney, Sydney, New South Wales, Australia
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
| | - Laima Brazionis
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
| | - Rachel O'Connell
- NHMRC Clinical Trials Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - Nanda Aryal
- Australian Institute of Health Innovation, Macquarie University, Sydney, New South Wales, Australia
| | - Georgia Shimmin
- NHMRC Clinical Trials Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Justin O'Day
- Department of Ophthalmology, Royal Victorian Eye and Ear Hospital, The University of Melbourne, Melbourne, Victoria, Australia
| | - Paul Mitchell
- The Westmead Institute for Medical Research, Sydney, New South Wales, Australia
| | - Peter G Colman
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Anthony C Keech
- NHMRC Clinical Trials Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - Alicia J Jenkins
- NHMRC Clinical Trials Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Medicine, Monash University, Melbourne, Victoria, Australia
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
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14
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Birdal O, Saygı M, Doğan R, Tezen O, Karagöz A, Tanboğa İH. Risk of Venous Thromboembolism with Statins: Evidence Gathered via a Network Meta-analysis. Balkan Med J 2023; 40:324-332. [PMID: 37519020 PMCID: PMC10500145 DOI: 10.4274/balkanmedj.galenos.2023.2023-5-26] [Citation(s) in RCA: 1] [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] [Received: 05/08/2023] [Accepted: 06/23/2023] [Indexed: 08/01/2023] Open
Abstract
Background Anticoagulants are the mainstay of treatment for venous thromboembolism (VTE). Studies have shown conflicting results regarding statins ability to reduce the incidence of VTE. Aims To perform a network meta-analysis to determine which lipid-lowering agent was more efficacious in and had more evidence regarding reducing the VTE risk. Study Design Network meta-analysis of the randomized controlled trials (RCTs). Methods RCTs that assessed the effectiveness and safety of statins or fibrates and compared them to a placebo or another statin were eligible for the study. The outcomes examined in the study were deep vein thrombosis, pulmonary embolism, and/or VTE. We conducted a comprehensive search of the Medline database from 1966 to February 2017, using specific search terms related to VTE and statins. Additionally, we screened, and cross-checked relevant systematic reviews and meta-analyses. We performed a network meta-analysis to compare the different lipid-lowering agents to each other and the placebo and their effectiveness. Results Twenty-seven RCTs were included in the network meta-analysis (n = 137,940). Pairwise meta-analysis revealed a statistically significant lower incidence of VTE with statins than with placebos (0.79% vs 0.99%, respectively; risk ratios: 0.87, 0.77-0.98; p = 0.022). Rosuvastatin had the most favorable effect in reducing VTE risk than the other statins, fenofibrate, and placebo. Fenofibrate was ranked the worst drug choice, because it increased risk of VTE when compared with the other statins. Rosuvastatin was the best choice for reducing the VTE risk when compared with the placebo (OR: 0.56, 0.42-0.75), atorvastatin (OR: 0.64, 0.44-0.95), pravastatin (OR: 0.50, 0.34-0.74), simvastatin (OR: 0.60, 0.42-0.86) and fenofibrate (OR: 0.37, 0.25-0.56). Compared with a placebo, rosuvastatin reduced the VTE risk by around 45% and fenofibrate increased the risk by 65%. Conclusion Rosuvastatin is significantly reduces the risk of VTE when compared with a placebo, other statin subtypes, and fibrate. Furthermore, fenofibrate increased the VTE risk when compared with a placebo and statins.
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Affiliation(s)
- Oğuzhan Birdal
- Department of Cardiology, Atatürk University Faculty of Medicine, Erzurum, Turkey
| | - Mehmet Saygı
- Clinic of Cardiology, Hisar Intercontinental Hospital, İstanbul, Turkey
| | - Remziye Doğan
- Clinic of Cardiology, Hisar Intercontinental Hospital, İstanbul, Turkey
| | - Ozan Tezen
- Clinic of Cardiology, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Training Hospital, İstanbul, Turkey
| | - Ali Karagöz
- Clinic of Cardiology, Koşuyolu Heart Hospital, İstanbul, Turkey
| | - İbrahim Halil Tanboğa
- Clinic of Cardiology, Hisar Intercontinental Hospital, İstanbul, Turkey
- Department of Cardiology and Biostatistics, Nişantaşı University Faculty of Medicine, İstanbul, Turkey
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Kitamura S, Murao N, Yokota S, Shimizu M, Ono T, Seino Y, Suzuki A, Maejima Y, Shimomura K. Effect of fenofibrate and selective PPARα modulator (SPPARMα), pemafibrate on KATP channel activity and insulin secretion. BMC Res Notes 2023; 16:202. [PMID: 37697384 PMCID: PMC10494450 DOI: 10.1186/s13104-023-06489-7] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 09/01/2023] [Indexed: 09/13/2023] Open
Abstract
OBJECTIVE Insulin secretion is regulated by ATP-sensitive potassium (KATP) channels in pancreatic beta-cells. Peroxisome proliferator-activated receptors (PPAR) α ligands are clinically used to treat dyslipidemia. A PPARα ligand, fenofibrate, and PPARγ ligands troglitazone and 15-deoxy-∆12,14-prostaglandin J2 are known to close KATP channels and induce insulin secretion. The recently developed PPARα ligand, pemafibrate, became a new entry for treating dyslipidemia. Because pemafibrate is reported to improve glucose intolerance in mice treated with a high fat diet and a novel selective PPARα modulator, it may affect KATP channels or insulin secretion. RESULTS The effect of fenofibrate (100 µM) and pemafibrate (100 µM) on insulin secretion from MIN6 cells was measured by using batch incubation for 10 and 60 min in low (2 mM) and high (10 mM) glucose conditions. The application of fenofibrate for 10 min significantly increased insulin secretion in low glucose conditions. Pemafibrate failed to increase insulin secretion in all of the conditions experimented in this study. The KATP channel activity was measured by using whole-cell patch clamp technique. Although fenofibrate (100 µM) reduced the KATP channel current, the same concentration of pemafibrate had no effect. Both fenofibrate and pemafibrate had no effect on insulin mRNA expression.
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Affiliation(s)
- Shigeki Kitamura
- Department of Bioregulation and Pharmacological Medicine, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295 Japan
- Department of Plastic and Reconstructive Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Naoya Murao
- Department of Endocrinology, Diabetes and Metabolism, Fujita Health University, Toyoake, Japan
| | - Shoko Yokota
- Department of Bioregulation and Pharmacological Medicine, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295 Japan
| | - Masaru Shimizu
- Department of Bioregulation and Pharmacological Medicine, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295 Japan
- Department of Neurology, Matsumura General Hospital, Iwaki, Japan
| | - Tomoyuki Ono
- Department of Bioregulation and Pharmacological Medicine, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295 Japan
| | - Yusuke Seino
- Department of Endocrinology, Diabetes and Metabolism, Fujita Health University, Toyoake, Japan
| | - Atsushi Suzuki
- Department of Endocrinology, Diabetes and Metabolism, Fujita Health University, Toyoake, Japan
| | - Yuko Maejima
- Department of Bioregulation and Pharmacological Medicine, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295 Japan
| | - Kenju Shimomura
- Department of Bioregulation and Pharmacological Medicine, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, 960-1295 Japan
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Raman Kallakunta V, Dudhipala N, Nyavanandi D, Sarabu S, Yadav Janga K, Ajjarapu S, Bandari S, Repka MA. Formulation and processing of solid self-emulsifying drug delivery systems (HME S-SEDDS): A single-step manufacturing process via hot-melt extrusion technology through response surface methodology. Int J Pharm 2023; 641:123055. [PMID: 37207857 PMCID: PMC10429704 DOI: 10.1016/j.ijpharm.2023.123055] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/17/2023] [Accepted: 05/11/2023] [Indexed: 05/21/2023]
Abstract
The objective of the current study is the formulation development and manufacturing of solid self-emulsifying drug delivery systems (HME S-SEDDS) via a single-step continuous hot-melt extrusion (HME) process. For this study, poorly soluble fenofibrate was selected as a model drug. From the results of pre-formulation studies, Compritol® HD5 ATO, Gelucire® 48/16, and Capmul® GMO-50 were selected as oil, surfactant and co-surfactant respectively for manufacturing of HME S-SEDDS. Neusilin® US2 was selected as a solid carrier. The design of experiments (response surface methodology) was employed to prepare formulations via a continuous HME process. The formulations were evaluated for emulsifying properties, crystallinity, stability, flow properties and drug release characteristics. The prepared HME S-SEDDS showed excellent flow properties, and the resultant emulsions were stable. The globule size of the optimized formulation was 269.6 nm. The DSC and XRD studies revealed the amorphous nature of the formulation and FTIR studies showed no significant interaction between fenofibrate and excipients. The drug release studies showed significant (p < 0.05) improvement in solubility compared to the pure drug (DE15 = 45.04 for the optimized formulation), as >90% of drug release was observed within 15 min. The stability studies for the optimized formulation were conducted for 3 months at 40 °C/75% RH.
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Affiliation(s)
| | - Narendar Dudhipala
- Department of Pharmaceutics and Drug Delivery, University of Mississippi 38677, USA
| | - Dinesh Nyavanandi
- Department of Pharmaceutics and Drug Delivery, University of Mississippi 38677, USA
| | - Sandeep Sarabu
- Department of Pharmaceutics and Drug Delivery, University of Mississippi 38677, USA
| | - Karthik Yadav Janga
- Department of Pharmaceutics and Drug Delivery, University of Mississippi 38677, USA
| | - Srinivas Ajjarapu
- Department of Pharmaceutics and Drug Delivery, University of Mississippi 38677, USA
| | - Suresh Bandari
- Department of Pharmaceutics and Drug Delivery, University of Mississippi 38677, USA
| | - Michael A Repka
- Department of Pharmaceutics and Drug Delivery, University of Mississippi 38677, USA; Pii Center for Pharmaceutical Technology, University of Mississippi 38677, USA.
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17
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Jiang Q, Liu Y, Bai X, Deng Y, Cao Y, Yu C, Song Q, Li Y. Nonanatomical reduction of femoral neck fractures in young patients treated with femoral neck system: a retrospective cohort study. BMC Musculoskelet Disord 2023; 24:412. [PMID: 37226140 PMCID: PMC10207767 DOI: 10.1186/s12891-023-06551-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/19/2023] [Indexed: 05/26/2023] Open
Abstract
PURPOSE Negative buttress reduction should be avoided in the treatment of femoral neck fractures (FNFs) using conventional fixation. As the femoral neck system (FNS) has been recently developed and utilized widely to treat FNFs, the association of reduction quality with postoperative complications and clinical function has not been clarified. The purpose of this study was to evaluate the clinical effect of nonanatomical reduction in young patients with FNFs treated with FNS. METHODS This multicenter, retrospective cohort study included 58 patients with FNFs treated with FNS between September 2019 and December 2021. According to the reduction quality immediately following surgery, patients were classified into positive, anatomical, and negative buttress reduction groups. Postoperative complications were assessed with 12 months of follow-up. The logistic regression model was used to identify risk factors for postoperative complications. The postoperative hip function was assessed using the Harris hip scores (HHS) system. RESULTS At a follow-up of 12 months, a total of eight patients (8/58, 13.8%) had postoperative complications in three groups. Compared with the anatomical reduction group, negative buttress reduction was significantly associated with a higher complication rate (OR = 2.99, 95%CI 1.10-8.10, P = 0.03). No significant associations were found between positive buttress reduction and the incidence of postoperative complications (OR = 1.21, 95%CI 0.35-4.14, P = 0.76). The difference was not statistically significant in Harris hip scores. CONCLUSION Negative buttress reduction should be avoided in young patients with FNFs treated with FNS.
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Affiliation(s)
- Qilong Jiang
- Department of Orthopaedic Surgery, Chongqing Orthopedic Hospital of Traditional Chinese Medicine, Chongqing, China
| | - Yang Liu
- Department of Orthopaedic Surgery, Chongqing Orthopedic Hospital of Traditional Chinese Medicine, Chongqing, China
| | - Xinwen Bai
- Department of Orthopaedic Surgery, Chongqing Orthopedic Hospital of Traditional Chinese Medicine, Chongqing, China
| | - Yu Deng
- Department of Orthopaedic Surgery, Chongqing Orthopedic Hospital of Traditional Chinese Medicine, Chongqing, China
| | - Yong Cao
- Department of Orthopaedic Surgery, Chongqing Orthopedic Hospital of Traditional Chinese Medicine, Chongqing, China
| | - Chengxiang Yu
- Department of Orthopaedic Surgery, Chongqing Sanbo Changan Hospital, Chongqing, China
| | - Qizhi Song
- Central Sterile Supply Department, Chonggang General Hospital, No. 1, Dayan Sancun, Dadukou District, Chongqing, 400010, China
| | - Yan Li
- Central Sterile Supply Department, Chonggang General Hospital, No. 1, Dayan Sancun, Dadukou District, Chongqing, 400010, China.
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18
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Iwasaki M, Suzuki H, Umezawa Y, Koshida T, Saito M, Fukuda H, Takahara H, Matsuzaki K, Suzuki Y. Efficacy and safety of pemafibrate in patients with chronic kidney disease: A retrospective study. Medicine (Baltimore) 2023; 102:e32818. [PMID: 36800602 PMCID: PMC9936022 DOI: 10.1097/md.0000000000032818] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
Hypertriglyceridemia and chronic kidney disease (CKD) are known risk factors for cardiovascular disease. However, treatment with statins, which control low-density lipoprotein cholesterol levels, increases the risk of estimated glomerular filtration rate (eGFR) reduction. Although conventional fibrates, such as bezafibrate (Beza-F) and fenofibrate (Feno-F), are the mainstay for hypertriglyceridemia treatment, they may be associated with a risk of increased serum creatinine level and renal dysfunction. Pemafibrate (Pema) is pharmacologically defined as a selective peroxisomal proliferator-activated receptor α modulator which is excreted in bile and not likely to cause renal dysfunction. We evaluated the efficacy and safety of switching from Beza-F or Feno-F to Pema in CKD patients with hypertriglyceridemia. We recruited 47 CKD patients with hypertriglyceridemia who were receiving Beza-F, Feno-F, or eicosapentaenoic acid (EPA) but were switched to Pema from 2018 to 2021. A retrospective analysis of renal function and lipid profiles was performed before and 24 weeks after switching. CKD patients switching from EPA to Pema were used as study control. The effect of Pema on hypertriglyceridemia was equivalent to that of Beza-F or Feno-F. However, after switching to Pema, eGFR showed a marked average improvement of 10.2 mL/min/1.73 m2 (P < .001). Improvement in eGFR and levels of n-acetyl-β-d-glucosaminidase and β-2-microglobulin was observed only in cases of switching from Beza-F or Feno-F but not from EPA. Although Beza-F and Feno-F are useful medications for the treatment of hypertriglyceridemia, these are associated with a high risk of renal dysfunction. We also found that the deterioration in eGFR due to Beza-F or Feno-F is reversible with drug withdrawal and may not increase the risk for long-term renal dysfunction. We suggest that Pema may be an effective and safe treatment for hypertriglyceridemia in CKD patients.
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Affiliation(s)
- Masako Iwasaki
- Department of Nephrology and Hypertension, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Hitoshi Suzuki
- Department of Nephrology and Hypertension, Juntendo University Urayasu Hospital, Chiba, Japan
- Department of Nephrology, Juntendo University Faculty of Medicine, Tokyo, Japan
- * Correspondence: Hitoshi Suzuki, Department of Nephrology, Juntendo University Urayasu Hospital, 2-1-1 Tomioka, Urayasu-shi, Chiba 279-0021, Japan (e-mail: )
| | - Yukako Umezawa
- Department of Nephrology and Hypertension, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Takeo Koshida
- Department of Nephrology and Hypertension, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Midori Saito
- Department of Nephrology and Hypertension, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Hiromitsu Fukuda
- Department of Nephrology and Hypertension, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Hisatsugu Takahara
- Department of Nephrology and Hypertension, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Keiichi Matsuzaki
- Department of Public Health, Kitasato University School of Medicine, Kanagawa, Japan
| | - Yusuke Suzuki
- Department of Nephrology, Juntendo University Faculty of Medicine, Tokyo, Japan
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19
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Huang J, Chan KC, Zhou R. Novel Inhibitory Role of Fenofibric Acid by Targeting Cryptic Site on the RBD of SARS-CoV-2. Biomolecules 2023; 13:biom13020359. [PMID: 36830728 PMCID: PMC9953482 DOI: 10.3390/biom13020359] [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] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/05/2023] [Accepted: 02/07/2023] [Indexed: 02/16/2023] Open
Abstract
The emergence of the recent pandemic causing severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has created an alarming situation worldwide. It also prompted extensive research on drug repurposing to find a potential treatment for SARS-CoV-2 infection. An active metabolite of the hyperlipidemic drug fenofibrate (also called fenofibric acid or FA) was found to destabilize the receptor-binding domain (RBD) of the viral spike protein and therefore inhibit its binding to human angiotensin-converting enzyme 2 (hACE2) receptor. Despite being considered as a potential drug candidate for SARS-CoV-2, FA's inhibitory mechanism remains to be elucidated. We used molecular dynamics (MD) simulations to investigate the binding of FA to the RBD of the SARS-CoV-2 spike protein and revealed a potential cryptic FA binding site. Free energy calculations were performed for different FA-bound RBD complexes. The results suggest that the interaction of FA with the cryptic binding site of RBD alters the conformation of the binding loop of RBD and effectively reduces its binding affinity towards ACE2. Our study provides new insights for the design of SARS-CoV-2 inhibitors targeting cryptic sites on the RBD of SARS-CoV-2.
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Affiliation(s)
- Jianxiang Huang
- Institute of Quantitative Biology, College of Life Sciences, Zhejiang University, Hangzhou 310027, China
| | - Kevin C. Chan
- Institute of Quantitative Biology, College of Life Sciences, Zhejiang University, Hangzhou 310027, China
- Shanghai Institute for Advanced Study, Zhejiang University, Shanghai 201203, China
| | - Ruhong Zhou
- Institute of Quantitative Biology, College of Life Sciences, Zhejiang University, Hangzhou 310027, China
- Shanghai Institute for Advanced Study, Zhejiang University, Shanghai 201203, China
- The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
- Department of Chemistry, Colombia University, New York, NY 10027, USA
- Correspondence:
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20
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van Walree ES, Jansen IE, Bell NY, Savage JE, de Leeuw C, Nieuwdorp M, van der Sluis S, Posthuma D. Disentangling Genetic Risks for Metabolic Syndrome. Diabetes 2022; 71:2447-2457. [PMID: 35983957 DOI: 10.2337/db22-0478] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 08/15/2022] [Indexed: 11/13/2022]
Abstract
A quarter of the world's population is estimated to meet the criteria for metabolic syndrome (MetS), a cluster of cardiometabolic risk factors that promote development of coronary artery disease and type 2 diabetes, leading to increased risk of premature death and significant health costs. In this study we investigate whether the genetics associated with MetS components mirror their phenotypic clustering. A multivariate approach that leverages genetic correlations of fasting glucose, HDL cholesterol, systolic blood pressure, triglycerides, and waist circumference was used, which revealed that these genetic correlations are best captured by a genetic one factor model. The common genetic factor genome-wide association study (GWAS) detects 235 associated loci, 174 more than the largest GWAS on MetS to date. Of these loci, 53 (22.5%) overlap with loci identified for two or more MetS components, indicating that MetS is a complex, heterogeneous disorder. Associated loci harbor genes that show increased expression in the brain, especially in GABAergic and dopaminergic neurons. A polygenic risk score drafted from the MetS factor GWAS predicts 5.9% of the variance in MetS. These results provide mechanistic insights into the genetics of MetS and suggestions for drug targets, especially fenofibrate, which has the promise of tackling multiple MetS components.
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Affiliation(s)
- Eva S van Walree
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
- Department of Complex Trait Genetics, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU Amsterdam, Amsterdam, the Netherlands
| | - Iris E Jansen
- Department of Complex Trait Genetics, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU Amsterdam, Amsterdam, the Netherlands
| | - Nathaniel Y Bell
- Department of Complex Trait Genetics, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU Amsterdam, Amsterdam, the Netherlands
| | - Jeanne E Savage
- Department of Complex Trait Genetics, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU Amsterdam, Amsterdam, the Netherlands
| | - Christiaan de Leeuw
- Department of Complex Trait Genetics, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU Amsterdam, Amsterdam, the Netherlands
| | - Max Nieuwdorp
- Department of Internal and Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Sophie van der Sluis
- Department of Child and Adolescent Psychology and Psychiatry, section Complex Trait Genetics, Amsterdam Neuroscience, VU University Medical Center, Amsterdam, the Netherlands
| | - Danielle Posthuma
- Department of Complex Trait Genetics, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU Amsterdam, Amsterdam, the Netherlands
- Department of Child and Adolescent Psychology and Psychiatry, section Complex Trait Genetics, Amsterdam Neuroscience, VU University Medical Center, Amsterdam, the Netherlands
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21
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Abstract
This work gives an insight into the process of adsorptive drug loading in silica aerogels from supercritical CO2 (scCO2). A prevalent method for such loading entails bringing the aerogels into contact with the drug-scCO2 solution followed by slow or isothermal depressurization. Our previous work established that drug precipitates during depressurization. Consequently, the adsorptive drug loading measured by the prevalent method includes precipitation. An alternative method is presented for accurate measurement of adsorption avoiding precipitation. To illustrate the disparity between the two methods, the concentration dependence of drug loadings in scCO2, obtained by both methods, is compared for fenofibrate, ibuprofen, and benzoic acid. A mechanism is proposed, and a mathematical model is developed for comparing the adsorptive drug loadings by both methods. The loading obtained by the present method is found to be much less than that by the prevalent method, though both correlate well with the formalism of the Langmuir adsorption equation with the same equilibrium constant at low concentrations. Equations are developed for the concentration dependence of drug loadings measured by both methods at all concentrations in scCO2.
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Affiliation(s)
- Neha Singh
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra400076, India
| | - Madhu Vinjamur
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra400076, India
| | - Mamata Mukhopadhyay
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra400076, India
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22
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Sridhar A, Khan D, Abdelaal M, Elliott JA, Naughton V, Flatt PR, Le Roux CW, Docherty NG, Moffett CR. Differential effects of RYGB surgery and best medical treatment for obesity-diabetes on intestinal and islet adaptations in obese-diabetic ZDSD rats. PLoS One 2022; 17:e0274788. [PMID: 36137097 PMCID: PMC9499270 DOI: 10.1371/journal.pone.0274788] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 09/05/2022] [Indexed: 11/19/2022] Open
Abstract
Modification of gut-islet secretions after Roux-En-Y gastric bypass (RYBG) surgery contributes to its metabolic and anti-diabetic benefits. However, there is limited knowledge on tissue-specific hormone distribution post-RYGB surgery and how this compares with best medical treatment (BMT). In the present study, pancreatic and ileal tissues were excised from male Zucker-Diabetic Sprague Dawley (ZDSD) rats 8-weeks after RYGB, BMT (daily oral dosing with metformin 300mg/kg, fenofibrate 100mg/kg, ramipril 1mg/kg, rosuvastatin 10mg/kg and subcutaneous liraglutide 0.2mg/kg) or sham operation (laparotomy). Insulin, glucagon, somatostatin, PYY, GLP-1 and GIP expression patterns were assessed using immunocytochemistry and analyzed using ImageJ. After RYGB and BMT, body weight and plasma glucose were decreased. Intestinal morphometry was unaltered by RYGB, but crypt depth was decreased by BMT. Intestinal PYY cells were increased by both interventions. GLP-1- and GIP-cell counts were unchanged by RYGB but BMT increased ileal GLP-1-cells and decreased those expressing GIP. The intestinal contents of PYY and GLP-1 were significantly enhanced by RYGB, whereas BMT decreased ileal GLP-1. No changes of islet and beta-cell area or proliferation were observed, but the extent of beta-cell apoptosis and islet integrity calculated using circularity index were improved by both treatments. Significantly decreased islet alpha-cell areas were observed in both groups, while beta- and PYY-cell areas were unchanged. RYGB also induced a decrease in islet delta-cell area. PYY and GLP-1 colocalization with glucagon in islets was significantly decreased in both groups, while co-staining of PYY with glucagon was decreased and that with somatostatin increased. These data characterize significant cellular islet and intestinal adaptations following RYGB and BMT associated with amelioration of obesity-diabetes in ZDSD rats. The differential responses observed and particularly those within islets, may provide important clues to the unique ability of RYGB to cause diabetes remission.
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Affiliation(s)
- Ananyaa Sridhar
- Biomedical Sciences Research Institute, School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, United Kingdom
| | - Dawood Khan
- Biomedical Sciences Research Institute, School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, United Kingdom
- * E-mail:
| | - Mahmoud Abdelaal
- Diabetes Complications Research Centre, School of Medicine, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Jessie A. Elliott
- Department of Surgery, Trinity Centre for Health Sciences and St. James’s Hospital, Dublin, Ireland
| | - Violetta Naughton
- Biomedical Sciences Research Institute, School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, United Kingdom
| | - Peter R. Flatt
- Biomedical Sciences Research Institute, School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, United Kingdom
| | - Carel W. Le Roux
- Diabetes Complications Research Centre, School of Medicine, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Neil G. Docherty
- Diabetes Complications Research Centre, School of Medicine, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Charlotte R. Moffett
- Biomedical Sciences Research Institute, School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, United Kingdom
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23
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Faria CV, Costa FCR, Jorge AEL, Melo ALP, Silva UCM, Santos VL, Amaral MCS, Fonseca FV. Effects of pharmaceuticals compounds and calcium on granulation, microbiology, and performance of anaerobic granular sludge systems. Water Sci Technol 2022; 85:3184-3195. [PMID: 35704404 DOI: 10.2166/wst.2022.176] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Granular sludge is a promising biotechnology to treat sewage contaminated with pharmaceuticals due to its increased toxicity resistance. In this context, this study evaluated the potential of Ca2+ as a granulation precursor and how pharmaceutical compounds (loratadine, prednisone, fluconazole, fenofibrate, betamethasone, 17α-ethinyl estradiol, and ketoprofen) affect granulation. Continuous and intermittent dosages of Ca2+ in the presence and absence of pharmaceuticals were evaluated. The results showed that intermittent addition of Ca2+ reduces the time for anaerobic sludge granulation, and pharmaceuticals presence did not impair granulation. 10% of the granules presented mean diameters greater than 2.11 mm within 93 days with intermittent Ca2+ dosage in the pharmaceuticals' presence. In contrast, no granules higher than 2.0 mm were observed with no precursor addition. The pharmaceuticals' toxicity may have created a stress condition for the microbial community, contributing to more EPS production and a greater potential for granulation. It was also verified that pharmaceuticals' presence did not decrease organic matter, total alkalinity, and volatile fatty acids removals. The 16S rRNA gene analysis revealed taxa resistance to recalcitrant compounds when pharmaceuticals were added. Besides, the efficiency of a granular sludge bioreactor (EGSB) was evaluated for pharmaceuticals removal, and betamethasone, fenofibrate, and prednisone were effectively removed.
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Affiliation(s)
- Clara V Faria
- Chemistry School, University of Rio de Janeiro, Horácio Macedo Avenue, 2030, Technology Center, Block E, University City, Rio de Janeiro, Brazil
| | - Flávia C R Costa
- Engineering School, University of Minas Gerais, Antônio Carlos Avenue, 6627, Belo Horizonte, Brazil E-mail:
| | - Alexandre E L Jorge
- Pontifical Catholic University of Minas Gerais, Dom José Gaspar Avenue, 500, Belo Horizonte, Brazil
| | - Ana Luísa P Melo
- Pontifical Catholic University of Minas Gerais, Dom José Gaspar Avenue, 500, Belo Horizonte, Brazil
| | - Ubiana C M Silva
- Microbiology Department, University of Minas Gerais, Antônio Carlos Avenue, 6627, Belo Horizonte, Brazil
| | - Vera L Santos
- Microbiology Department, University of Minas Gerais, Antônio Carlos Avenue, 6627, Belo Horizonte, Brazil
| | - Míriam C S Amaral
- Engineering School, University of Minas Gerais, Antônio Carlos Avenue, 6627, Belo Horizonte, Brazil E-mail:
| | - Fabiana V Fonseca
- Chemistry School, University of Rio de Janeiro, Horácio Macedo Avenue, 2030, Technology Center, Block E, University City, Rio de Janeiro, Brazil
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24
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Lentz KA, Plum J, Steffansen B, Arvidsson PO, Omkvist DH, Pedersen AJ, Sennbro CJ, Pedersen GP, Jacobsen J. Predicting in vivo performance of fenofibrate amorphous solid dispersions using in vitro non-sink dissolution and dissolution permeation setup. Int J Pharm 2021; 610:121174. [PMID: 34655705 DOI: 10.1016/j.ijpharm.2021.121174] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/01/2021] [Accepted: 10/04/2021] [Indexed: 11/17/2022]
Abstract
Amorphous solid dispersion (ASD) is emerging as a useful formulation strategy to increase the bioavailability of active pharmaceutical ingredients with poor solubility. In vitro dissolution testing under non-sink conditions has often been used to evaluate the ability of ASDs to generate and maintain supersaturation to predict the in vivo performance. However, such a single compartment dissolution setup can fail to predict the oral bioavailability, due to an interdependence between precipitation and permeation. Hence, the use of two compartment dissolution-permeation setups is emerging. In this study, three ASDs containing fenofibrate as model drug substance were developed using Soluplus®, and Hypromellose Acetate Succinate in two different grades (high and low), respectively. The aim was to compare the use of a small-scale in vitro non-sink dissolution setup and a small-scale in vitro dissolution-permeation setup to predict the in vivo oral exposure of the ASDs in rats. The maximum concentration (Cmax) and area under curve (AUC) obtained in the in vitro studies were used to predict the in vivo rank order of the formulations. The results showed that the two in vitro studies resulted in the same rank order based on both Cmax and AUC. Interestingly, Cmax resulted in a better in vitro/in vivo correlation than the in vitro AUC, and based on the in vitro Cmax, the in vivo rank order was predicted.
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Affiliation(s)
- Karoline Aagaard Lentz
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark; LEO Pharma, A/S, Industriparken 55, DK-2750 Ballerup, Denmark
| | - Jakob Plum
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark; LEO Pharma, A/S, Industriparken 55, DK-2750 Ballerup, Denmark.
| | | | | | | | | | | | | | - Jette Jacobsen
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
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25
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Hegazy MA, Bakr MA, Badawey AM, Abbas SS. Univariate and multivariate assisted spectrophotometric methods for determination of rosuvastatin calcium and fenofibrate in bulk powders and tablets along with their degradation products. Spectrochim Acta A Mol Biomol Spectrosc 2021; 248:119163. [PMID: 33223434 DOI: 10.1016/j.saa.2020.119163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 10/28/2020] [Accepted: 10/28/2020] [Indexed: 06/11/2023]
Abstract
Rosuvastatin calcium and fenofibrate are recently co-formulated for treatment of hyperlipidemia. Two selective spectrophotometric approaches were developed, the first is univariate manipulation of spectrophotometric data, where isoabsorptive point and dual wavelength method were applied. The total concentration of rosuvastatin calcium and fenofibrate could be determined at λ = 253.2 nm while rosuvastatin calcium was determined with dual wavelength (λ = 243.5 and 307.9 nm) where linearity was achieved in the range of 2.00-22.00 µg/mL and mean accuracy 100.29 ± 0.568 then, by difference, Fenofibrate was determined in the range of 2.00-22.00 µg/mL and mean accuracy 100.23 ± 0.578. The second approach is a stability indicating multivariate modeling namely principal component regression and partial least squares, where the two drugs were determined in the presence of their degradation products. 17 samples were prepared according to five levels four factors calibration design. The developed models were described by 4 latent variables, and good prediction was evidenced by low root mean square error of prediction. The proposed methods were found to be rapid and simple and required no preliminary separation. Rosuvastatin calcium and fenofibrate were analyzed with mean recoveries 99.54 ± 0.903, 99.88 ± 0.548 and 99.50 ± 0.712, 99.30 ± 0.802, respectively. The two drugs were successfully determined in tablets by the developed methods and the results were compared to HPLC methods, where they were found to be statistically non-significant.
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Affiliation(s)
- Maha A Hegazy
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., 11562 Cairo, Egypt
| | - Maryam A Bakr
- Pharmaceutical Chemistry Department, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt, 90th St., Fifth Settlement, New Cairo, Egypt.
| | - Amr M Badawey
- Pharmaceutical Chemistry Department, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt, 90th St., Fifth Settlement, New Cairo, Egypt
| | - Samah S Abbas
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., 11562 Cairo, Egypt
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26
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Tang Y, Shah H, Bueno Junior CR, Sun X, Mitri J, Sambataro M, Sambado L, Gerstein HC, Fonseca V, Doria A, Pop-Busui R. Intensive Risk Factor Management and Cardiovascular Autonomic Neuropathy in Type 2 Diabetes: The ACCORD Trial. Diabetes Care 2021; 44:164-173. [PMID: 33144354 PMCID: PMC7783932 DOI: 10.2337/dc20-1842] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 09/26/2020] [Indexed: 02/07/2023]
Abstract
OBJECTIVE The effects of preventive interventions on cardiovascular autonomic neuropathy (CAN) remain unclear. We examined the effect of intensively treating traditional risk factors for CAN, including hyperglycemia, hypertension, and dyslipidemia, in individuals with type 2 diabetes (T2D) and high cardiovascular risk participating in the Action to Control Cardiovascular Risk in Diabetes (ACCORD) trial. RESEARCH DESIGN AND METHODS CAN was defined as heart rate variability indices below the fifth percentile of the normal distribution. Of 10,251 ACCORD participants, 71% (n = 7,275) had a CAN evaluation at study entry and at least once after randomization. The effects of intensive interventions on CAN were analyzed among these subjects through generalized linear mixed models. RESULTS As compared with standard intervention, intensive glucose treatment reduced CAN risk by 16% (odds ratio [OR] 0.84, 95% CI 0.75-0.94, P = 0.003)-an effect driven by individuals without cardiovascular disease (CVD) at baseline (OR 0.73, 95% CI 0.63-0.85, P < 0.0001) rather than those with CVD (OR 1.10, 95% CI 0.91-1.34, P = 0.34) (P interaction = 0.001). Intensive blood pressure (BP) intervention decreased CAN risk by 25% (OR 0.75, 95% CI 0.63-0.89, P = 0.001), especially in patients ≥65 years old (OR 0.66, 95% CI 0.49-0.88, P = 0.005) (P interaction = 0.05). Fenofibrate did not have a significant effect on CAN (OR 0.91, 95% CI 0.78-1.07, P = 0.26). CONCLUSIONS These data confirm a beneficial effect of intensive glycemic therapy and demonstrate, for the first time, a similar benefit of intensive BP control on CAN in T2D. A negative CVD history identifies T2D patients who especially benefit from intensive glycemic control for CAN prevention.
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Affiliation(s)
- Yaling Tang
- Research Division, Joslin Diabetes Center, Boston, MA
- Department of Medicine, Harvard Medical School, Boston, MA
| | - Hetal Shah
- Research Division, Joslin Diabetes Center, Boston, MA
- Department of Medicine, Harvard Medical School, Boston, MA
| | | | - Xiuqin Sun
- Research Division, Joslin Diabetes Center, Boston, MA
- Department of Endocrinology and Metabolism, Anzhen Hospital Affiliated to Capital Medical University, Beijing, China
| | - Joanna Mitri
- Research Division, Joslin Diabetes Center, Boston, MA
- Department of Medicine, Harvard Medical School, Boston, MA
| | - Maria Sambataro
- Endocrine, Metabolism and Nutrition Disease Unit, Internal Medicine Department, Santa Maria of Ca' Foncello Hospital, Treviso, Italy
| | - Luisa Sambado
- Endocrine, Metabolism and Nutrition Disease Unit, Internal Medicine Department, Santa Maria of Ca' Foncello Hospital, Treviso, Italy
| | - Hertzel C Gerstein
- McMaster University and the Population Health Research Institute, Hamilton, Ontario, Canada
| | - Vivian Fonseca
- Section of Endocrinology, Tulane University Health Sciences Center, New Orleans, LA
| | - Alessandro Doria
- Research Division, Joslin Diabetes Center, Boston, MA
- Department of Medicine, Harvard Medical School, Boston, MA
| | - Rodica Pop-Busui
- Division of Metabolism, Endocrinology & Diabetes, Department of Internal Medicine, University of Michigan, Ann Arbor, MI
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Mamidi HK, Palekar S, Nukala PK, Mishra SM, Patki M, Fu Y, Supner P, Chauhan G, Patel K. Process optimization of twin-screw melt granulation of fenofibrate using design of experiment (DoE). Int J Pharm 2020; 593:120101. [PMID: 33309834 DOI: 10.1016/j.ijpharm.2020.120101] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/13/2020] [Accepted: 11/15/2020] [Indexed: 01/06/2023]
Abstract
The purpose of this study was to optimize the melt granulation process of fenofibrate using twin-screw granulator. Initial screening was performed to select the excipients required for melt granulation process. A 3 × 3 factorial design was used to optimize the processing conditions using the % drug loading (X1) and screw speed (X2) as the independent parameters and granule friability (Y1) % yield (Y2) as the dependent parameters. The effect of the independent parameters on the dependent parameters was determined using response surface plots and contour plots. A linear relationship was observed between % drug loading (X1) and % friability (Y1) and a quadratic relationship was observed between the independent parameters (X1 and X2) and % yield (Y2). The processing conditions for optimum granules were determined using numerical and graphical optimization and it was found that 15% drug loading at 50 rpm results in maximum % yield of 82.38% and minimum friability of 7.88%. The solid-state characterization of the optimized granules showed that the drug turned from crystalline state to amorphous state during melt granulation process. The optimized granules were compressed into tablets using Purolite® as the super disintegrating agent. The optimized formulation showed >85% drug release in 0.75% SLS solution within 60 min.
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Affiliation(s)
- Hemanth K Mamidi
- College of Pharmacy and Health Sciences, St. John's University, Queens, NY, USA
| | - Siddhant Palekar
- College of Pharmacy and Health Sciences, St. John's University, Queens, NY, USA
| | - Pavan Kumar Nukala
- College of Pharmacy and Health Sciences, St. John's University, Queens, NY, USA
| | - Saurabh M Mishra
- College of Pharmacy and Health Sciences, St. John's University, Queens, NY, USA; SE Tylose USA Inc., Pharmaceutical Application Laboratory, 140 Commerce Way, Totowa, NJ, USA
| | - Manali Patki
- College of Pharmacy and Health Sciences, St. John's University, Queens, NY, USA
| | - Yige Fu
- College of Pharmacy and Health Sciences, St. John's University, Queens, NY, USA
| | - Piyush Supner
- College of Pharmacy and Health Sciences, St. John's University, Queens, NY, USA
| | - Gautam Chauhan
- College of Pharmacy and Health Sciences, St. John's University, Queens, NY, USA
| | - Ketan Patel
- College of Pharmacy and Health Sciences, St. John's University, Queens, NY, USA.
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Kramer GJ, Pimentel-Elardo S, Nodwell JR. Dual-PKS Cluster for Biosynthesis of a Light-Induced Secondary Metabolite Found from Genome Sequencing of Hyphodiscus hymeniophilus Fungus. Chembiochem 2020; 21:2116-2120. [PMID: 32314858 PMCID: PMC7496686 DOI: 10.1002/cbic.201900689] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 03/17/2020] [Indexed: 11/15/2022]
Abstract
Filamentous fungi are known producers of important secondary metabolites. In spite of this, the majority of these organisms have not been studied at the genome level, leaving many of the bioactive molecules they produce undiscovered. In this study, we explore the secondary metabolite potential of an understudied fungus, Hyphodiscus hymeniophilus. By sequencing and assembling the first genome from this genus, we show that this fungus has genes for at least 20 natural products and that many of these products are likely novel. One of these metabolites is identified: a new, red-pigmented member of the azaphilone class, hyphodiscorubrin. We show that this metabolite is only produced when the fungus is grown in the light. Furthermore, the biosynthetic gene cluster of hyphodiscorubrin is identified though homology to other known azaphilone producing clusters.
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Affiliation(s)
- Glenna J Kramer
- Department of Biochemistry, University of Toronto, MaRS Centre, West Tower, 661 University Avenue, Toronto, ON, M5G 1M1, Canada
| | - Sheila Pimentel-Elardo
- Department of Biochemistry, University of Toronto, MaRS Centre, West Tower, 661 University Avenue, Toronto, ON, M5G 1M1, Canada
| | - Justin R Nodwell
- Department of Biochemistry, University of Toronto, MaRS Centre, West Tower, 661 University Avenue, Toronto, ON, M5G 1M1, Canada
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29
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Lizunov AV, Okunevich IV, Lebedev AA, Bychkov ER, Piotrovskiy LB, Shabanov PD. [Molecular mechanisms of the cytoprotector cramizol effect in the experimental dyslipidemia model]. Biomed Khim 2020; 66:326-331. [PMID: 32893822 DOI: 10.18097/pbmc20206604326] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The tested drug cramizol exhibits lipid-lowering and anti-atherogenic effects. Cramizol reduces blood cholesterol and triglycerides. It also increases HDL and reduces the atherogenic index in rats with the chronic dyslipidemia model induced by a hypercholesterol diet. Cramizol is effective as a hypolipidemic agent and its efficiency is comparable with the reference drug, phenofibrate. Cramizol increases expression of the ApoA1 and ApoC2 genes, and also reduces expression of the Scarb1 gene in rats with experimentally induced hyperlipidemia. These mechanisms could be the basis of its hypolipidemic and anti-atherogenic actions.
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Affiliation(s)
- A V Lizunov
- Institute of Experimental Medicine, St. Petersburg, Russia; St Petersburg University, St. Petersburg, Russia
| | - I V Okunevich
- Institute of Experimental Medicine, St. Petersburg, Russia
| | - A A Lebedev
- Institute of Experimental Medicine, St. Petersburg, Russia
| | - E R Bychkov
- Institute of Experimental Medicine, St. Petersburg, Russia; Kirov Military Medical Academy, Ministry of Defense of the Russian Federation, St. Petersburg, Russia
| | | | - P D Shabanov
- Institute of Experimental Medicine, St. Petersburg, Russia; Kirov Military Medical Academy, Ministry of Defense of the Russian Federation, St. Petersburg, Russia
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30
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Lizunov AV, Okunevich IV, Orlov SV, Lebedev AA, Bychkov ER, Piotrovskiy LB, Shabanov PD. [Effects of сramizol on expression of the ApoA1 gene in rats with experimental hyperlipidemia]. Biomed Khim 2019; 65:403-406. [PMID: 31666413 DOI: 10.18097/pbmc20196505403] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
An imidazole derivative cramizol, has lipid-lowering and anti-atherogenic effects. Cramizol reduces blood levels of cholesterol and triglycerides, and also reduces the atherogenic index in animals with acute hyperlipidemia induced by Triton WR-1339. Cramizol and the lipid-lowering drug fenofibrate exhibited similar effectiveness as hypolipidemic agents. Cramizol also restores the expression of the Apoa1 gene in rats with experimentally induced hyperlipidemia to normal values. This may be a basis of its hypolipidemic and anti-atherogenic action.
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Affiliation(s)
- A V Lizunov
- Institute of Experimental Medicine, St. Petersburg, Russia; St Petersburg University, St. Petersburg, Russia
| | - I V Okunevich
- Institute of Experimental Medicine, St. Petersburg, Russia
| | - S V Orlov
- Institute of Experimental Medicine, St. Petersburg, Russia; St Petersburg University, St. Petersburg, Russia
| | - A A Lebedev
- Institute of Experimental Medicine, St. Petersburg, Russia
| | - E R Bychkov
- Institute of Experimental Medicine, St. Petersburg, Russia; Kirov Military Medical Academy, St. Petersburg, Russia
| | | | - P D Shabanov
- Institute of Experimental Medicine, St. Petersburg, Russia; Kirov Military Medical Academy, St. Petersburg, Russia
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31
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Abdalla SM, Dejman A, Clark V, Levy C. Use of Fenofibrate for patients with primary Sclerosing Cholangitis. Clin Res Hepatol Gastroenterol 2019; 43:e33-e36. [PMID: 30880099 DOI: 10.1016/j.clinre.2018.11.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 11/12/2018] [Indexed: 02/04/2023]
Affiliation(s)
- Sherine M Abdalla
- Division of Hepatology, Department of Medicine, University of Miami, Jackson Medical Towers, 1500 NW, 12th avenue, Suite 1101, Miami, FL, USA
| | - Adriana Dejman
- Division of Hepatology, Department of Medicine, University of Miami, Jackson Medical Towers, 1500 NW, 12th avenue, Suite 1101, Miami, FL, USA
| | - Virginia Clark
- Division of Hepatology, Department of Medicine, University of Miami, Jackson Medical Towers, 1500 NW, 12th avenue, Suite 1101, Miami, FL, USA
| | - Cynthia Levy
- Division of Hepatology, Department of Medicine, University of Miami, Jackson Medical Towers, 1500 NW, 12th avenue, Suite 1101, Miami, FL, USA.
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32
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Jia S, Xu T, Huan T, Chong M, Liu M, Fang W, Fang M. Chemical Isotope Labeling Exposome (CIL-EXPOSOME): One High-Throughput Platform for Human Urinary Global Exposome Characterization. Environ Sci Technol 2019; 53:5445-5453. [PMID: 30943026 DOI: 10.1021/acs.est.9b00285] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Human exposure to hundreds of chemicals, a primary component of the exposome, has been associated with many diseases. Urinary biomarkers of these chemicals are commonly monitored to quantify their exposure. However, because of low concentrations and the great variability in physicochemical properties of exposure biomarkers, exposome research has been limited by low-throughput and costly methods. Here, we developed a sensitive and high-throughput exposome analytical platform (CIL-EXPOSOME) by isotopically labeling urinary biomarkers with common functional groups (phenolic hydroxyl/carboxyl/primary amine). After a simple cleanup, we used mass spectrometry to perform a screening for both targeted and untargeted biomarkers, which was further processed by an automatic computational pipeline method for qualification and quantification. This platform has effectively introduced an isotope tag for the absolute quantification of biomarkers and has improved sensitivity of 2-1184 fold compared to existing methods. For putative identification, we built a database of 818 urinary biomarkers with MS/MS fragmentation information from either standards or in silico predictions. Using this platform, we have found 671 urinary exposure biomarker candidates from a 2 mL pooled urine sample. The exposome data acquisition and analysis time has also been greatly shortened. The results showed that CIL-EXPOSOME is a useful tool for global exposome analysis of complex samples.
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Affiliation(s)
- Shenglan Jia
- School of Civil and Environmental Engineering , Nanyang Technological University , 50 Nanyang Avenue , Singapore 639798
- Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute , Nanyang Technological University , 1 Cleantech Loop, CleanTech One , Singapore 637141
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute , Nanyang Technological University , Singapore 637141
| | - Tengfei Xu
- School of Civil and Environmental Engineering , Nanyang Technological University , 50 Nanyang Avenue , Singapore 639798
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute , Nanyang Technological University , Singapore 637141
| | - Tao Huan
- Department of Chemistry , University of British Columbia , Vancouver Campus, 2036 Main Mall , Vancouver , BC , Canada V6T 1Z1
| | - Maria Chong
- School of Civil and Environmental Engineering , Nanyang Technological University , 50 Nanyang Avenue , Singapore 639798
| | - Min Liu
- School of Civil and Environmental Engineering , Nanyang Technological University , 50 Nanyang Avenue , Singapore 639798
- Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute , Nanyang Technological University , 1 Cleantech Loop, CleanTech One , Singapore 637141
| | - Wenjuan Fang
- Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute , Nanyang Technological University , 1 Cleantech Loop, CleanTech One , Singapore 637141
| | - Mingliang Fang
- School of Civil and Environmental Engineering , Nanyang Technological University , 50 Nanyang Avenue , Singapore 639798
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute , Nanyang Technological University , Singapore 637141
- Analytics Cluster, Nanyang Environment and Water Research Institute , Nanyang Technological University , 1 Cleantech Loop, CleanTech One , Singapore 637141
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33
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Affiliation(s)
- Muh Geot Wong
- Division of Renal and Metabolic, The George Institute for Global Health, University of New South Wales, Sydney, Australia
- Department of Renal Medicine, Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - Hiddo J.L. Heerspink
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; and
| | - Vlado Perkovic
- Division of Renal and Metabolic, The George Institute for Global Health, University of New South Wales, Sydney, Australia
- Department of Renal Medicine, Royal North Shore Hospital, St Leonards, New South Wales, Australia
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34
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姚 笑, 夏 凡, 唐 外, 周 本. [Effect of Hugan Qingzhi tablets on AMPK pathway activation and NF-κB-p65 protein expression in the liver of rats with nonalcoholic fatty liver disease]. Nan Fang Yi Ke Da Xue Xue Bao 2017; 37:56-62. [PMID: 28109099 PMCID: PMC6765763 DOI: 10.3969/j.issn.1673-4254.2017.01.10] [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] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To investigate the effect of Hugan Qingzhi tablets on lipid metabolism and inflammation in rats fed on high-fat diet and explore the underlying mechanisms. METHODS Sixty male Sprague-Dawley rats were randomly divided into 6 groups, namely HFD group (with high-fat diet and distilled water), control group (with normal diet and distilled water), fenofibrate group (with high-fat diet and treatment with 0.1 g<kg fenofibrate suspension), and low-, moderate- and high-dose Hugan Qingzhi tablet groups (with high-fat diet and treatment with 0.54, 1.08, and 2.16 g<kg Hugan Qingzhi suspension). After daily corresponding treatments for 12 weeks, the histological changes in the liver were observed with HE staining. The serum levels of triglyceride (TG), cholesterol (CHOL), alanine transaminase (ALT), and aspartate aminotransferase (AST), and the levels of TG and CHOL in the hepatic tissue were assayed. The proinflammatory cytokines TNF-α, IL-6 and CRP were detected with enzyme-linked immunoassay, and p-AMPK, SREBP-1c, FASN and NF-αB-p65 expression levels in the liver were determined with qRT-PCR or Western blotting. RESULTS At high and moderate doses, Hugan Qingzhi effectively decreased the levels of ALT, AST, TG and CHOL levels in the serum, lowered the hepatic levels of TNF-α, IL-6 and CRP, enhanced p-AMPK, and reduced the expression of SREBP-1c, FASN and Ac-NF-αB-p65 in the liver of rats fed on high-fat diet. CONCLUSION Hugan Qingzhi tablets alleviates hyperlipidemia and inflammation in rats fed with high-fat diet possibly by activating AMPK pathway and suppress NF-αB activity to arrest the progression of nonalcoholic fatty liver disease.
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Affiliation(s)
- 笑睿 姚
- />南方医科大学珠江医院药学部,广东 广州 510282Department of Pharmacy, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - 凡 夏
- />南方医科大学珠江医院药学部,广东 广州 510282Department of Pharmacy, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - 外姣 唐
- />南方医科大学珠江医院药学部,广东 广州 510282Department of Pharmacy, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - 本杰 周
- />南方医科大学珠江医院药学部,广东 广州 510282Department of Pharmacy, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
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35
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Karmarkar AB. Effect of Ceolus KG-802 on the dissolution rate of fenofibrate liquisolid tablets: Preformulation and formulation development studies. Drug Discov Ther 2010; 4:493-498. [PMID: 22491315] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The purpose of the present research was to study the effects of Ceolus KG-802 on the dissolution behavior of fenofibrate liquisolid tablets. The fenofibrate liquisolid tablets were formulated using the mathematical model described by Spireas et al. In the present research, Ceolus KG-802, a different form of microcrystalline cellulose (PH 102 grade), was used as a carrier material. The developed formulations were subjected to preformulation studies such as differential scanning calorimetry, X-ray powder diffraction, and determination of flow properties. The liquisolid tablets prepared were studied for their in vitro dissolution and compared to liquisolid tablets prepared using Avicel PH 102. The in vitro dissolution profiles of liquisolid tablets prepared using Ceolus KG-802 indicated slower dissolution than those of liquisolid tablets prepared using Avicel PH 102, which was a subject of earlier studies. This might be due to the particle size, shape, and characteristic properties of Ceolus KG-802.
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Affiliation(s)
- A B Karmarkar
- Govt. College of Pharmacy, Karad, Dist. Satara, MS, India
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36
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Mamedov MN. [Expediency of the use of fibrates for primary and secondary prevention of cardiovascular complications.]. Kardiologiia 2006; 46:39-47. [PMID: 17310961] [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: 05/14/2023]
Abstract
Fibrates primarily cause lowering of triglycerides and elevation of high density cholesterol levels. In WHO, HHS and VA-HIT trials fibrates were shown to decrease development of complications of cardiovascular diseases. Efficacy of fenofibrate in subjects with moderate risk and type 2 diabetes combined with mild dyslipidemia was studied in the placebo controlled FIELD study. Administration of fenofibrate was associated with insignificant 11% decrease of cardiovascular events (19% decrease after adjustment for statin use) and significant 24% decrease of nonfatal myocardial infarctions. Among effects on secondary end points were significant decreases of coronary revascularizations (-21%), strokes (-11%) and requrements in laser therapy for diabetic retinopathy (-30%). Fenofibrate also caused significant slowing of progression of albuminuria and nephropathy. Fenofibrate can be used in subjects with high coronary risk and metabolic syndrome combined with atherogenic dyslipidemia (total cholesterol/high density lipoprotein cholesterol >4 mmol/l), as well as in patients with moderate and pronounced hypertriglyceridemia or normal or elevated high density lipoprotein cholesterol. One of important indications for administration of fenofibrate is type 2 diabetes without ischemic heart disease but with microvascular complications. Fenofibrate can be also used in combination with other lipid lowering drugs (e.g. statins) in primary and secondary prevention for facilitation of achievement of target lipid levels.
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Affiliation(s)
- M N Mamedov
- Research Center for Preventive Medicine; Petroverigsky per., 10, 101953 Moscow, Russia
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37
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Lukjanowicz M, Trzcińska-Butkiewicz B, Brzosko M. [ Fenofibrate--induced myopathy in a patient with undiagnosed hypothyroidism--case report and a review of the literature]. Pol Arch Med Wewn 2006; 115:45-9. [PMID: 17278784] [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: 05/13/2023]
Abstract
Hypothyroidism is one of the common causes of the secondary hypercholesterolemia. The prevalence of hypothyroidism in the general population is estimated to be as high as about 1.5%. Frequency of the hypothyroidism in patients with hyperlipidemia is high, and can be observed in 4.2-10% in different populations. Most commonly, there is no need to treat the hypothyroid patients with the hypolipidemic drugs. Substitution treatment with the thyroid hormones usually results in either normalization or significant decreasing of the lipid levels. Hypothyroidism with symptoms of involvement of skeletal muscles is referred as to hypothyroid myopathy in English literature, and can be present in 30-80% patients with deficiency of the thyroid hormones. Hypothyroidism is a risk factor of developing of toxic injury of muscles, what is thought to be related to hypolipidemic drug intake. We report a case of a patient with undiagnosed hypothyroidism with muscle involvement manifestation, who was treated with fenofibrate due to accidentally diagnosed hypercholesterolemia. Hypolipidemic management resulted in rapid exacerbation of previously moderate myopathy. High concentrations of muscle enzymes and moderate increasing of creatinine concentration were detected. Improvement was observed after discontinuation of fenofibrate administration, but muscle symptoms and elevation of muscle enzymes and creatinine persisted. After administration of levothyroxin, muscle weakness and laboratory abnormalities were observed no longer. After several months of follow-up we believe that treatment with fenofibrate in our patient was complicated with muscle tissue damage and exacerbated symptoms of myopathy originally related to decompensated hypothyroidism.
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Tsai MY, Hanson NQ, Straka RJ, Hoke TR, Ordovas JM, Peacock JM, Arends VL, Arnett DK. Effect of influenza vaccine on markers of inflammation and lipid profile. ACTA ACUST UNITED AC 2005; 145:323-7. [PMID: 15976761 DOI: 10.1016/j.lab.2005.03.009] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Despite wide use of the influenza vaccine, relatively little is known about its effect on the measurement of inflammatory markers. Because inflammatory markers such as C-reactive protein (CRP) are increasingly being used in conjunction with lipids for the clinical assessment of cardiovascular disease and in epidemiologic studies, we evaluated the effect of influenza vaccination on markers of inflammation and plasma lipid concentrations. We drew blood from 22 healthy individuals 1 to 6 hours before they were given an influenza vaccination and 1, 3, and 7 days after the vaccination. Plasma CRP, interleukin (IL)-6, monocyte chemotactic protein 1, tumor necrosis factor alpha, IL-2 soluble receptor alpha, and serum amyloid A were measured, and differences in mean concentrations of absolute and normalized values on days 1, 3, and 7 were compared with mean baseline values. There was a significant increase in mean IL-6 (P < .01 absolute values, P < .001 normalized values) on day 1 after receiving the influenza vaccine. The mean increases in normalized high sensitivity CRP values were significant on day 1 (P < .01) and day 3 (P = .05), whereas the mean increase in normalized serum amyloid A was significant only on day 1 (P < .05). No significant changes were seen in mean concentrations of IL-2 soluble receptor alpha, monocyte chemotactic protein-1, or tumor necrosis factor-alpha. Of the lipids, significant decreases in mean concentrations of normalized triglyceride values were seen on days 1 (P < .05), 3 (P < .001), and 7 (P < .05) after vaccination. Our findings show that the influenza vaccination causes transient changes in select markers of inflammation and lipids. Consequently, clinical and epidemiologic interpretation of the biomarkers affected should take into account the possible effects of influenza vaccination.
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Affiliation(s)
- Michael Y Tsai
- Laboratory of Medicine and Pathology, University of Minnesota, Minneapolis, USA.
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Albet S, Bentejac M, Savary S, Gondcaille C, Netik A, Berger J, Szpirer C, Troffer-Charlier N, Bugaut M. Rat adrenoleukodystrophy-related (ALDR) gene: full-length cDNA sequence and new insight in expression. Biochim Biophys Acta 2001; 1517:257-69. [PMID: 11342107 DOI: 10.1016/s0167-4781(00)00291-8] [Citation(s) in RCA: 17] [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] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
X-linked adrenoleukodystrophy (X-ALD) is an inherited demyelinating disorder due to mutations in the ALD gene, which encodes a peroxisomal ABC half-transporter (ALDP). It has been suggested that ALDP assembles with ALDRP (adrenoleukodystrophy-related protein), a close homologous half-transporter, to form a functional heterodimer. For the first time full-length ALDRP cDNA (5.5 kb) was cloned, and 5' and 3' RACE analysis revealed that alternative usage of polyadenylation sites generates the two transcripts of 3.0 and 5.5 kb observed in the rat in Northern blot analysis. Southern blotting and chromosomal mapping demonstrated one ALDR locus in the rat genome. Characterisation of the 3' flanking region suggested that an ID sequence might be responsible for high expression of the 5.5 kb ALDRP transcript in rat brain. ALDR gene expression was found to be high in the liver of rats before weaning and very low in adult rats; the reverse developmental regulation was observed in the brain. Fenofibrate, which is a potent inducer of the ALDR gene in the liver of adult rats, could not induce the ALDR gene in suckling rats. The exact significance of this result with regard to development of an efficient pharmacological gene therapy for X-ALD is discussed.
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Affiliation(s)
- S Albet
- Laboratoire de Biologie Moléculaire et Cellulaire, Faculté des Sciences Gabriel, Université de Bourgogne, 6 Bd Gabriel, 21000 Dijon, France
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Fenofibrate, a third-generation fibric acid derivative. Proceedings of a symposium. November 15, 1986, Dallas, Texas. Am J Med 1987; 83:1-89. [PMID: 3688010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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[Scientific symposium on fenofibrate. Dijon, March 8, 1980]. Nouv Presse Med 1980; 9:3717-73. [PMID: 7208335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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