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Khobrani M, Kandasamy G, Vasudevan R, Alhossan A, Chowdary Puvvada R, Devanandan P, Dhurke R, Naredla M. Impact of Vitamin B6 Deficiency on the Severity of Diabetic Peripheral Neuropathy – A Cross Sectional Study. Saudi Pharm J 2023; 31:655-658. [PMID: 37181142 PMCID: PMC10172568 DOI: 10.1016/j.jsps.2023.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 03/01/2023] [Indexed: 03/11/2023] Open
Abstract
Background Diabetic Peripheral Neuropathy is one of the most important and significantly prevalent microvascular complications of Diabetes Mellitus. Pyridoxine is a key nutrient for protecting nerve health. The objective of this research is to study the prevalence rate of pyridoxine deficiency in Diabetic neuropathy patients, to understand the correlation between various biochemical and markers of diabetic neuropathy and pyridoxine deficiency. Results 249 patients were selected for the study based on the selection criteria participants. 51.8% prevalence of pyridoxine deficiency in Diabetic neuropathy patients. The nerve conduction velocity significantly reduced in pyridoxine deficiency cases (p < 0.05). A strong inverse relationship is observed with fasting blood sugar levels and glycated hemoglobin pyridoxine deficiency might contribute to impaired glucose tolerance. Conclusion There also exists a strong inverse relationship with glycemic markers. Significant direct correlation is observed with nerve conduction velocity. Pyridoxine also has properties of antioxidant which may be utilized for the management of Diabetic Neuropathy.
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Yepes-Calderón M, Kremer D, Post A, Sotomayor CG, Seidel U, Huebbe P, Knobbe TJ, Lüersen K, Eisenga MF, Corpeleijn E, De Borst MH, Navis GJ, Rimbach G, Bakker SJL. Plasma Copper Concentration Is Associated with Cardiovascular Mortality in Male Kidney Transplant Recipients. Antioxidants (Basel) 2023; 12:antiox12020454. [PMID: 36830012 PMCID: PMC9952822 DOI: 10.3390/antiox12020454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/02/2023] [Accepted: 02/07/2023] [Indexed: 02/15/2023] Open
Abstract
Kidney transplant recipients (KTR) are at increased risk of cardiovascular mortality. We investigated whether, in KTR, post-transplantation copper status is associated with the risk of cardiovascular mortality and potential effect modification by sex. In this cohort study, plasma copper was measured using mass spectrometry in extensively-phenotyped KTR with a functioning allograft >1-year. Cox regression analyses with the inclusion of multiplicative interaction terms were performed. In 660 KTR (53 ± 13 years old, 56% male), the median baseline plasma copper was 15.42 (IQR 13.53-17.63) µmol/L. During a median follow-up of 5 years, 141 KTR died, 53 (38%) due to cardiovascular causes. Higher plasma copper was associated with an increased risk of cardiovascular mortality in the overall KTR population (HR 1.37; 95% CI, 1.07-1.77 per 1-SD, p = 0.01). Sex was a significant effect modifier of this association (Pinteraction = 0.01). Among male KTR, higher plasma copper concentration was independently associated with a two-fold higher risk of cardiovascular mortality (HR 2.09; 95% CI, 1.42-3.07 per 1-SD, p < 0.001). Among female KTR, this association was absent. This evidence offers a rationale for considering a sex-specific assessment of copper's role in cardiovascular risk evaluation. Further studies are warranted to elucidate whether copper-targeted interventions may decrease cardiovascular mortality in male KTR.
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Affiliation(s)
- Manuela Yepes-Calderón
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
- Correspondence: ; Tel.: +31-061-6654-888
| | - Daan Kremer
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Adrian Post
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Camilo G. Sotomayor
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
- Clinical Hospital University of Chile, University of Chile, Independencia 8380453, Chile
| | - Ulrike Seidel
- Institute of Human Nutrition and Food Science, University of Kiel, 24118 Kiel, Germany
| | - Patricia Huebbe
- Institute of Human Nutrition and Food Science, University of Kiel, 24118 Kiel, Germany
| | - Tim J. Knobbe
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Kai Lüersen
- Institute of Human Nutrition and Food Science, University of Kiel, 24118 Kiel, Germany
| | - Michele F. Eisenga
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Eva Corpeleijn
- Department of Epidemiology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Martin H. De Borst
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Gerjan J. Navis
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Gerald Rimbach
- Institute of Human Nutrition and Food Science, University of Kiel, 24118 Kiel, Germany
| | - Stephan J. L. Bakker
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
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Cellular prion protein offers neuroprotection in astrocytes submitted to amyloid β oligomer toxicity. Mol Cell Biochem 2022:10.1007/s11010-022-04631-w. [PMID: 36576715 DOI: 10.1007/s11010-022-04631-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 12/02/2022] [Indexed: 12/29/2022]
Abstract
The cellular prion protein (PrPC), in its native conformation, performs numerous cellular and cognitive functions in brain tissue. However, despite the cellular prion research in recent years, there are still questions about its participation in oxidative and neurodegenerative processes. This study aims to elucidate the involvement of PrPC in the neuroprotection cascade in the presence of oxidative stressors. For that, astrocytes from wild-type mice and knockout to PrPC were subjected to the induction of oxidative stress with hydrogen peroxide (H2O2) and with the toxic oligomer of the amyloid β protein (AβO). We observed that the presence of PrPC showed resistance in the cell viability of astrocytes. It was also possible to monitor changes in basic levels of metals and associate them with an induced damage condition, indicating the precise role of PrPC in metal homeostasis, where the absence of PrPC leads to metallic unbalance, culminating in cellular vulnerability to oxidative stress. Increased caspase 3, p-Tau, p53, and Bcl2 may establish a relationship between a PrPC and an induced damage condition. Complementarily, it has been shown that PrPC prevents the internalization of AβO and promotes its degradation under oxidative stress induction, thus preventing protein aggregation in astrocytes. It was also observed that the presence of PrPC can be related to translocating SOD1 to cell nuclei under oxidative stress, probably controlling DNA damage. The results of this study suggest that PrPC acts against oxidative stress activating the cellular response and defense by displaying neuroprotection to neurons and ensuring the functionality of astrocytes.
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Wei CC, Li SW, Wu CT, How CM, Pan MH. Dietary Methylglyoxal Exposure Induces Alzheimer's Disease by Promoting Amyloid β Accumulation and Disrupting Autophagy in Caenorhabditis elegans. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:10011-10021. [PMID: 35917150 DOI: 10.1021/acs.jafc.2c03411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Methylglyoxal (MG) is a precursor of advanced glycation end products usually generated during cooking. The high level of MG in the brain is correlated to the pathogenesis of Alzheimer's disease (AD). However, it is not clear if MG consumed through the diet can cause AD-related toxicity. Herein, the Caenorhabditis elegans (C. elegans) AD model was used to investigate the neurotoxicity after long-term MG exposure at dietary levels. The results showed that C. elegans locomotive behaviors were significantly decreased after 0.1, 0.5, and 1 mM MG exposure (p < 0.001). In amyloid β (Aβ)-expressing transgenic C. elegans strains, 0.5 mM MG significantly promoted Aβ accumulation by around 50% in day-8 CL2006 (p < 0.001), enhanced paralysis in CL4176 (p < 0.001) and CL2006 (p < 0.01), and made CL2355 around 17% more vulnerable to 5-HT, indicating impaired serotonin reuptake (p < 0.05). Additionally, 0.5 mM MG significantly increased the reactive oxygen species level (p < 0.001) by inhibiting the expression of stress-response genes including sod-3, gst-4, and hsp-16.2 in day-8 aged worms. Moreover, the autophagic pathway was disrupted through lgg-1, vps-34, and bec-1 expression after MG exposure and Aβ accumulation. Treatment with the citrus flavonoid nobiletin reduced the MG-induced toxicity (p < 0.001). Overall, these findings imply that it is possible to exacerbate AD pathogenesis by MG exposure through the diet.
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Affiliation(s)
- Chia-Cheng Wei
- Institute of Food Safety and Health, College of Public Health, National Taiwan University, Taipei 10055, Taiwan
- Department of Public Health, College of Public Health, National Taiwan University, Taipei 10055, Taiwan
| | - Shang-Wei Li
- Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Chia-Tung Wu
- Institute of Food Safety and Health, College of Public Health, National Taiwan University, Taipei 10055, Taiwan
| | - Chun Ming How
- Department of Bioenvironmental Systems Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei 10617, Taiwan
| | - Min-Hsiung Pan
- Institute of Food Science and Technology, College of Bio-Resources and Agriculture, National Taiwan University, Taipei 10617, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
- Department of Health and Nutrition Biotechnology, Asia University, Taichung 41354, Taiwan
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5
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Shojai S, Haeri Rohani SA, Moosavi-Movahedi AA, Habibi-Rezaei M. Human serum albumin in neurodegeneration. Rev Neurosci 2022; 33:803-817. [PMID: 35363449 DOI: 10.1515/revneuro-2021-0165] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 03/02/2022] [Indexed: 11/15/2022]
Abstract
Serum albumin (SA) exists in relatively high concentrations, in close contact with most cells. However, in the adult brain, except for cerebrospinal fluid (CSF), SA concentration is relatively low. It is mainly produced in the liver to serve as the main protein of the blood plasma. In the plasma, it functions as a carrier, chaperon, antioxidant, source of amino acids, osmoregulator, etc. As a carrier, it facilitates the stable presence and transport of the hydrophobic and hydrophilic molecules, including free fatty acids, steroid hormones, medicines, and metal ions. As a chaperon, SA binds to and protects other proteins. As an antioxidant, thanks to a free sulfhydryl group (-SH), albumin is responsible for most antioxidant properties of plasma. These functions qualify SA as a major player in, and a mirror of, overall health status, aging, and neurodegeneration. The low concentration of SA is associated with cognitive deterioration in the elderly and negative prognosis in multiple sclerosis (MS) and amyotrophic lateral sclerosis (ALS). SA has been shown to be structurally modified in neurological conditions such as Alzheimer's disease (AD). During blood-brain barrier damage albumin enters the brain tissue and could trigger epilepsy and neurodegeneration. SA is able to bind to the precursor agent of the AD, amyloid-beta (Aβ), preventing its toxic effects in the periphery, and is being tested for treating this disease. SA therapy may also be effective in brain rejuvenation. In the current review, we will bring forward the prominent properties and roles of SA in neurodegeneration.
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Affiliation(s)
- Sajjad Shojai
- School of Biology, College of Science, University of Tehran, Tehran, Iran
| | | | | | - Mehran Habibi-Rezaei
- School of Biology, College of Science, University of Tehran, Tehran, Iran
- Nano-Biomedicine Center of Excellence, Nanoscience and Nanotechnology Research Center, University of Tehran, Tehran, Iran
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Bel'skaya LV, Sarf EA, Shalygin SP, Postnova TV, Kosenok VK. Potential Diagnostic Significance of Salivary Copper Determination in Breast Cancer Patients: A Pilot Study. Biol Trace Elem Res 2022; 200:953-960. [PMID: 33837914 DOI: 10.1007/s12011-021-02710-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 04/06/2021] [Indexed: 12/14/2022]
Abstract
Determination of the copper content in the saliva of breast cancer patients was carried out to assess the potential diagnostic and prognostic value. The malignant group included 75 breast cancer patients; the benign group included 87 patients with fibroadenomas; and the control group included 20 volunteers without breast pathology. All participants had 1 ml of saliva collected prior to treatment. The determination of copper in saliva was carried out by the stripping voltammetric method. Overall survival was assessed using the Kaplan-Meier method with the presentation of survival curves and the calculation of the significance of differences by Log-rank. The average copper content in the saliva of breast cancer patients is 49.3% higher than in patients with fibroadenomas and 60.4% higher than in volunteers without breast pathologies. Within the group of breast cancer patients, the content of copper in saliva is heterogeneous, which limits the possibilities of using this indicator for diagnostic purposes. The copper content increases when comparing the initial stages and locally widespread (+ 22.4%) and then sharply increases by 3.5 times at the T3-4N0-2M0 stage. For HER2-positive breast cancer, the copper content in saliva is 51.9% higher than for HER2-negative, a similar pattern was observed for luminal A and B breast cancer subtypes. The content of copper in saliva less than 1.14 mg/l is a prognostically unfavorable sign, while the relative risk of dying from breast cancer more than doubles. Thus, the content of copper in saliva can be used in clinical practice for planning treatment tactics.
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Affiliation(s)
- Lyudmila V Bel'skaya
- Biochemistry Research Laboratory, Omsk State Pedagogical University, Omsk, 644043, Russia.
| | - Elena A Sarf
- Biochemistry Research Laboratory, Omsk State Pedagogical University, Omsk, 644043, Russia
| | - Sergey P Shalygin
- Department of Chemistry, Omsk State Medical University, Omsk, 644099, Russia
| | - Tatyana V Postnova
- Department of Chemistry, Omsk State Medical University, Omsk, 644099, Russia
| | - Victor K Kosenok
- Department of Oncology, Omsk State Medical University, Omsk, 644099, Russia
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Lin Q, Jia Y, Li T, Wang S, Xu X, Xu Y, Lu L, Yang C, Zou H. Optic disc morphology and peripapillary atrophic changes in diabetic children and adults without diabetic retinopathy or visual impairment. Acta Ophthalmol 2022; 100:e157-e166. [PMID: 33949131 PMCID: PMC9292269 DOI: 10.1111/aos.14885] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 03/25/2021] [Accepted: 04/04/2021] [Indexed: 12/28/2022]
Abstract
PURPOSE To investigate the changes in optic disc morphology and peripapillary atrophy (PPA) in diabetic children and adults without diabetic retinopathy (DR) or visual impairment (VI). METHODS This cross-sectional study included two groups of subjects. One group included 91 children with type 1 diabetes mellitus (T1DM) and 86 healthy children, and the other group included 444 adults with T2DM and 442 healthy controls. The optic disc parameters including major and minor axis lengths, optic disc ovality (ODO), optic disc tilt, optic disc area and β-PPA area were analysed in all subjects. Optic disc rotation and the Bergmeister papilla were analysed only in children. Patients with diabetes and healthy controls were compared in each group of the study population. RESULTS In both groups, patients with diabetes and healthy controls were matched for age, sex and axial length (AL). Among the children, β-PPA area was significantly smaller in those with diabetes (0.29 ± 0.43 mm2 ) than in the healthy controls (0.46 ± 0.58 mm2 , p < 0.05). Multiple linear regression analysis showed that diagnosis of DM was negatively associated with β-PPA area. Longer AL and higher body mass index (BMI) were positively associated with β-PPA area. Among adults, ODO was significantly larger in those with diabetes (1.14 ± 0.09) than in healthy controls (1.12 ± 0.06, p < 0.05). Multiple linear regression analysis showed that the BMI and DM were potential risk factors affecting ODO. CONCLUSION Hyperglycaemia had different effects on the optic disc in children and adults. Unlike in healthy controls, hyperglycaemia had an impact on the peripapillary tissue in children and on optic disc shape in adults before DR and VI development.
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Affiliation(s)
- Qiurong Lin
- Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases National Clinical Research Center for Eye Diseases Shanghai Key laboratory of Ocular Fundus Diseases Shanghai General Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
- Shanghai Eye Diseases Prevention & Treatment Center Shanghai Eye Hospital Shanghai China
| | - Yan Jia
- Department of Ophthalmology Children's Hospital of Fudan University Shanghai China
| | - Tao Li
- Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases National Clinical Research Center for Eye Diseases Shanghai Key laboratory of Ocular Fundus Diseases Shanghai General Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
- Shanghai Eye Diseases Prevention & Treatment Center Shanghai Eye Hospital Shanghai China
| | - Shanshan Wang
- Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases National Clinical Research Center for Eye Diseases Shanghai Key laboratory of Ocular Fundus Diseases Shanghai General Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
- Shanghai Eye Diseases Prevention & Treatment Center Shanghai Eye Hospital Shanghai China
| | - Xian Xu
- Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases National Clinical Research Center for Eye Diseases Shanghai Key laboratory of Ocular Fundus Diseases Shanghai General Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
- Shanghai Eye Diseases Prevention & Treatment Center Shanghai Eye Hospital Shanghai China
| | - Yi Xu
- Shanghai Eye Diseases Prevention & Treatment Center Shanghai Eye Hospital Shanghai China
| | - Lina Lu
- Shanghai Eye Diseases Prevention & Treatment Center Shanghai Eye Hospital Shanghai China
| | - Chenhao Yang
- Department of Ophthalmology Children's Hospital of Fudan University Shanghai China
| | - Haidong Zou
- Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases National Clinical Research Center for Eye Diseases Shanghai Key laboratory of Ocular Fundus Diseases Shanghai General Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
- Shanghai Eye Diseases Prevention & Treatment Center Shanghai Eye Hospital Shanghai China
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Inhibition of Advanced Glycation End Product Formation in Rat Tail Tendons by Polydatin and p-Coumaric acid: an In Vitro Study. Appl Biochem Biotechnol 2021; 194:339-353. [PMID: 34855112 DOI: 10.1007/s12010-021-03762-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 11/08/2021] [Indexed: 12/22/2022]
Abstract
Advanced glycation end products (AGEs) formed through non-enzymatic glycosylation between a protein and sugar molecule are highly harmful to the human body. In hyperglycemic patients, AGE formation is more due to high glucose circulating in the blood, causing inter and intra molecular cross-linking of collagen leading to reduction of collagen elasticity. This cross-linked collagen develops resistance to matrix metalloproteinases leading to impaired collagen turnover. The aim of this work is to determine the anti-glycation effects of polydatin and p-coumaric acid in preventing collagen cross-linking by incubating rat tail tendons (RTTs) as collagen source in high glucose concentration (50 mM) for a week. The RTTs were then characterized for tensile strength, cross-linking efficiency, circular dichroism spectrometry, collagen, glucose, and aldehyde contents. Electrophoresis was carried out to evaluate the level of cross-linking in collagen and the results confirmed the ability of the drugs in preventing complex intermolecular cross-link formation induced by non-enzymatic glycosylation. CD data showed alteration in the secondary structure of collagen where AGE formation had occurred. More collagen was extracted by pepsin from RTTs treated with glucose alone (6.88 mg/10 mg tendon) when compared with drug-treated groups (4.25, 2.56 mg/10 mg tendon for polydatin and p-coumaric acid, respectively). Tensile strength (20.66% and 18.95%), cross-linking percentage (32.5% and 29.84%), and glucose content (2.3 and 1.8 mg/100 mg) of drug-treated groups were similar to the positive control (19.07%, 30.13%, and 2.61 mg/100 mg) thus proving the anti-glycation potential of the drugs. Hence, both polydatin and p-coumaric acid could play a pivotal role in preventing AGE formation.
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Copper in tumors and the use of copper-based compounds in cancer treatment. J Inorg Biochem 2021; 226:111634. [PMID: 34740035 DOI: 10.1016/j.jinorgbio.2021.111634] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 10/05/2021] [Accepted: 10/12/2021] [Indexed: 12/12/2022]
Abstract
Copper homeostasis is strictly regulated by protein transporters and chaperones, to allow its correct distribution and avoid uncontrolled redox reactions. Several studies address copper as involved in cancer development and spreading (epithelial to mesenchymal transition, angiogenesis). However, being endogenous and displaying a tremendous potential to generate free radicals, copper is a perfect candidate, once opportunely complexed, to be used as a drug in cancer therapy with low adverse effects. Copper ions can be modulated by the organic counterpart, after complexed to their metalcore, either in redox potential or geometry and consequently reactivity. During the last four decades, many copper complexes were studied regarding their reactivity toward cancer cells, and many of them could be a drug choice for phase II and III in cancer therapy. Also, there is promising evidence of using 64Cu in nanoparticles as radiopharmaceuticals for both positron emission tomography (PET) imaging and treatment of hypoxic tumors. However, few compounds have gone beyond testing in animal models, and none of them got the status of a drug for cancer chemotherapy. The main challenge is their solubility in physiological buffers and their different and non-predictable mechanism of action. Moreover, it is difficult to rationalize a structure-based activity for drug design and delivery. In this review, we describe the role of copper in cancer, the effects of copper-complexes on tumor cell death mechanisms, and point to the new copper complexes applicable as drugs, suggesting that they may represent at least one component of a multi-action combination in cancer therapy.
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Litwinowicz K, Waszczuk E, Gamian A. Advanced Glycation End-Products in Common Non-Infectious Liver Diseases: Systematic Review and Meta-Analysis. Nutrients 2021; 13:3370. [PMID: 34684371 PMCID: PMC8537188 DOI: 10.3390/nu13103370] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/19/2021] [Accepted: 09/20/2021] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Excessive intake of fructose, glucose and alcohol is associated with the development of non-alcoholic fatty liver disease (NAFLD) and alcoholic liver disease (ALD). At the same time, these dietetic factors create an environment favorable for the generation of advanced glycation end-products. For this reason, advanced glycation end-products (AGEs) are hypothesized to play role in the development of NAFLD and ALD. In this systematic review and meta-analysis, we explore the relationship between NAFLD and ALD with AGE levels, including their diagnostic accuracy. METHODS The systematic review and meta-analysis has been pre-registered with PROSPERO (CRD42021240954) and was performed in accordance with the PRISMA guidelines. Meta-analyses were performed using the meta R package. RESULTS We have obtained 11 studies meeting our inclusion criteria, reporting data on 1844 participants (909 with NAFLD, 169 with ALD and 766 healthy controls). NAFLD was associated with significantly higher AGE fluorescence and serum N-(carboxyethyl)lysine (CEL) levels. Patients with alcoholic cirrhosis had significantly higher levels of N-(carboxymethyl)lysine (CML). Only individual studies examined AGEs in the context of their diagnostic accuracy. AGE fluorescence distinguished low and moderate steatosis with an AUC of 0.76. The ratio of CML, CEL and pentosidine to a soluble variant of the AGE receptor differentiated patients with NAFLD from healthy controls with high AUC (0.83-0.85). Glyceraldehyde-derived AGE separated non-alcoholic fatty liver (NAFL) from non-alcoholic steatohepatitis (NASH) with acceptable performance (AUC 0.78). CONCLUSIONS In conclusion, NAFLD and ALD are associated with significantly higher levels of several AGEs. More research is needed to examine the diagnostic accuracy of AGEs, however individual studies show that AGEs perform well in distinguishing NAFL from NASH.
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Affiliation(s)
- Kamil Litwinowicz
- Department of Biochemistry and Immunochemistry, Wroclaw Medical University, 50-368 Wrocław, Poland
| | - Ewa Waszczuk
- Department of Gastroenterology and Hepatology, Wroclaw Medical University, 50-556 Wrocław, Poland;
| | - Andrzej Gamian
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wrocław, Poland;
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11
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Copper, Iron, Selenium and Lipo-Glycemic Dysmetabolism in Alzheimer's Disease. Int J Mol Sci 2021; 22:ijms22179461. [PMID: 34502369 PMCID: PMC8431716 DOI: 10.3390/ijms22179461] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 12/18/2022] Open
Abstract
The aim of the present review is to discuss traditional hypotheses on the etiopathogenesis of Alzheimer's disease (AD), as well as the role of metabolic-syndrome-related mechanisms in AD development with a special focus on advanced glycation end-products (AGEs) and their role in metal-induced neurodegeneration in AD. Persistent hyperglycemia along with oxidative stress results in increased protein glycation and formation of AGEs. The latter were shown to possess a wide spectrum of neurotoxic effects including increased Aβ generation and aggregation. In addition, AGE binding to receptor for AGE (RAGE) induces a variety of pathways contributing to neuroinflammation. The existing data also demonstrate that AGE toxicity seems to mediate the involvement of copper (Cu) and potentially other metals in AD pathogenesis. Specifically, Cu promotes AGE formation, AGE-Aβ cross-linking and up-regulation of RAGE expression. Moreover, Aβ glycation was shown to increase prooxidant effects of Cu through Fenton chemistry. Given the role of AGE and RAGE, as well as metal toxicity in AD pathogenesis, it is proposed that metal chelation and/or incretins may slow down oxidative damage. In addition, selenium (Se) compounds seem to attenuate the intracellular toxicity of the deranged tau and Aβ, as well as inhibiting AGE accumulation and metal-induced neurotoxicity.
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12
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Luna C, Arjona A, Dueñas C, Estevez M. Allysine and α-Aminoadipic Acid as Markers of the Glyco-Oxidative Damage to Human Serum Albumin under Pathological Glucose Concentrations. Antioxidants (Basel) 2021; 10:474. [PMID: 33802856 PMCID: PMC8002732 DOI: 10.3390/antiox10030474] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/08/2021] [Accepted: 03/16/2021] [Indexed: 12/12/2022] Open
Abstract
Understanding the molecular basis of the disease is of the utmost scientific interest as it contributes to the development of targeted strategies of prevention, diagnosis, and therapy. Protein carbonylation is a typical feature of glyco-oxidative stress and takes place in health disorders such as diabetes. Allysine as well as its oxidation product, the α-amino adipic acid (α-AA) have been found to be markers of diabetes risk whereas little is known about the chemistry involved in its formation under hyperglycemic conditions. To provide insight into this issue, human serum albumin was incubated in the presence of FeCl3 (25 μM) and increasing glucose concentrations for 32 h at 37 °C. These concentrations were selected to simulate (i) physiological fasting plasma concentration (4 mM), (ii) pathological pre-diabetes fasting plasma concentration (8 mM), and pathological diabetes fasting plasma concentration (12 mM) of glucose. While both allysine and α-AA were found to increase with increasing glucose concentrations, the carboxylic acid was only detected at pathological glucose concentrations and appeared to be a more reliable indicator of glyco-oxidative stress. The underlying chemical mechanisms of lysine glycation as well as of the depletion of tryptophan and formation of fluorescent and colored advanced glycation products are discussed.
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Affiliation(s)
- Carolina Luna
- Emergency unit, Hospital Nuestra Señora de la Montaña, Servicio Extremeño de Salud, Gobierno de Extremadura, 10002 Cáceres, Spain;
| | - Alexis Arjona
- Family and Community Medicine, Servicio Extremeño de Salud, Gobierno de Extremadura, 10002 Cáceres, Spain;
| | - Carmen Dueñas
- Gastroenterology unit, Hospital Universitario Cáceres, Servicio Extremeño de Salud, Gobierno de Extremadura, 10002 Cáceres, Spain;
| | - Mario Estevez
- Meat and Meat Products Research Institute (IPROCAR), Food Technology, University of Extremadura, 10003 Cáceres, Spain
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13
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Marques CMS, Pedron T, Batista BL, Cerchiaro G. Cellular prion protein activates Caspase 3 for apoptotic defense mechanism in astrocytes. Mol Cell Biochem 2021; 476:2149-2158. [PMID: 33547547 DOI: 10.1007/s11010-021-04078-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 01/25/2021] [Indexed: 12/31/2022]
Abstract
The cellular prion protein (PrPC) is anchored in the plasma membrane of cells, and it is highly present in cells of brain tissue, exerting numerous cellular and cognitive functions. The present study proves the importance of PrPC in the cellular defense mechanism and metal homeostasis in astrocytes cells. Through experimental studies using cell lines of immortalized mice astrocytes (wild type and knockout for PrPC), we showed that PrPc is involved in the apoptosis cell death process by the activation of Caspase 3, downregulation of p53, and cell cycle maintenance. Metal homeostasis was determined by inductively coupled plasma mass spectrometry technique, indicating the crucial role of PrPC to lower intracellular calcium. The lowered calcium concentration and the Caspase 3 downregulation in the PrPC-null astrocytes resulted in a faster growth rate in cells, comparing with PrPC wild-type one. The presence of PrPC shows to be essential to cell death and healthy growth. In conclusion, our results show for the first time that astrocyte knockout cells for the cellular prion protein could modulate apoptosis-dependent cell death pathways.
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Affiliation(s)
- Caroline M S Marques
- Center for Natural Sciences and Humanities, Federal University of ABC (UFABC), Avenida dos Estados, 5001, Bl.B, Santo André, SP, 09210-580, Brazil
| | - Tatiana Pedron
- Center for Natural Sciences and Humanities, Federal University of ABC (UFABC), Avenida dos Estados, 5001, Bl.B, Santo André, SP, 09210-580, Brazil
| | - Bruno L Batista
- Center for Natural Sciences and Humanities, Federal University of ABC (UFABC), Avenida dos Estados, 5001, Bl.B, Santo André, SP, 09210-580, Brazil
| | - Giselle Cerchiaro
- Center for Natural Sciences and Humanities, Federal University of ABC (UFABC), Avenida dos Estados, 5001, Bl.B, Santo André, SP, 09210-580, Brazil.
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14
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Zane D, Feldman PL, Sawyer T, Sobol Z, Hawes J. Development and Regulatory Challenges for Peptide Therapeutics. Int J Toxicol 2020; 40:108-124. [PMID: 33327828 DOI: 10.1177/1091581820977846] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
There has been an increased interest in and activity for the use of peptide therapeutics to treat a variety of human diseases. The number of peptide drugs entering clinical development and the market has increased significantly over the past decade despite inherent challenges of peptide therapeutic discovery, development, and patient-friendly delivery. Disparities in interpretation and application of existing regulatory guidances to innovative synthetic and conjugated peptide assets have resulted in challenges for both regulators and sponsors. The Symposium on Development and Regulatory Challenges for Peptide Therapeutics at the 40th Annual Meeting of the American College of Toxicology held in November of 2019 focused on the following specific topics: (1) peptide therapeutic progress and future directions, and approaches to discover, optimize, assess, and deliver combination peptide therapeutics for treatment of diseases; (2) toxicological considerations to advance peptide drug-device combination products for efficient development and optimal patient benefit and adherence; (3) industry and regulatory perspectives on the regulation of synthetic and conjugated peptide products, including exploration of regulatory classifications, interpretations, and application of the existing guidances International Council for Harmonisation (ICH) M3(R2) and ICH S6(R1) in determining nonclinical study recommendations; and (4) presentation of the 2016 Health and Environmental Sciences Institute's Genetic Toxicology Technical Committee working group assessment of genotoxicity testing requirements. Perspectives were shared from industry and regulatory scientists working in the peptide therapeutics field followed by an open forum panel discussion to discuss questions drafted for the peptide therapeutics scientific community, which will be discussed in more detail.
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Affiliation(s)
- Doris Zane
- 435529Intarcia Therapeutics, Inc., Hayward, CA, USA
| | - Paul L Feldman
- 435529Intarcia Therapeutics, Inc., Research Triangle Park, NC, USA
| | | | - Zhanna Sobol
- Pfizer Inc., Worldwide Research and Development, Groton, CT, USA
| | - Jessica Hawes
- 4137Food and Drug Administration (FDA), Center for Drug Evaluation and Research (CDER), Silver Spring, MD, USA.,Hawes is now with Food and Drug Administration (FDA), National Center for Toxicological Research (NCTR), Jefferson, AR, USA
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15
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Ma J, Xie Y, Zhou Y, Wang D, Cao L, Zhou M, Wang X, Wang B, Chen W. Urinary copper, systemic inflammation, and blood lipid profiles: Wuhan-Zhuhai cohort study. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 267:115647. [PMID: 33254652 DOI: 10.1016/j.envpol.2020.115647] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 09/12/2020] [Accepted: 09/12/2020] [Indexed: 06/12/2023]
Abstract
Copper have been reported to be associated with metabolic diseases. However, results on copper exposure with blood lipid profiles are inconsistent, and the underlying mechanisms of this association remain unclear. This study focused on investigating associations between urinary copper and blood lipid profiles; and exploring the potential role of systemic inflammation in such relationships. Concentrations of urinary copper, plasma C-reactive protein (CRP), and four blood lipid parameters (e.g., Total cholesterol [TC], triglycerides [TG], low-density lipoprotein cholesterol [LDL-C], and high-density lipoprotein cholesterol [HDL-C]) were measured in the adult participants from Wuhan-Zhuhai cohort. The associations between copper, CRP, and four blood lipids were assessed by the multivariable linear regression models, and the 3D mesh graphs was used to examine the joint effects of copper exposure and CRP on four blood lipid parameters. In addition, we used mediation analysis to investigate the mediated effects of CRP in the relationships between copper exposure and blood lipid profiles. Each 1% increase in urinary copper was statistically significantly associated with a 5.32% (95% CI: 2.48%, 8.24%) increase in TG after adjusting for the confounders (P < 0.05). No significant associations were observed between urinary copper and the other three blood lipid parameters (all P > 0.05). In addition, urinary copper increased monotonically with plasma CRP elevation, which in turn, was positively associated with TC, TG, and LDL-C and negatively related to HDL-C (all P < 0.05). Results from 3D mesh graphs demonstrated that increased levels of plasma CRP with higher urinary copper corresponded to higher TC, TG, LDL-C, and lower HDL-C concentrations. Mediation analysis observed that CRP mediated 6.27% in the relationships of urinary copper and TG. These findings suggest that systemic inflammation partly mediated the association between copper exposure and abnormal blood lipid, and may contribute to the development of dyslipidemias.
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Affiliation(s)
- Jixuan Ma
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Yujia Xie
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Yun Zhou
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Dongming Wang
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Limin Cao
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Min Zhou
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Xing Wang
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Bin Wang
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Weihong Chen
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China.
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16
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Vitamin B6 and Diabetes: Relationship and Molecular Mechanisms. Int J Mol Sci 2020; 21:ijms21103669. [PMID: 32456137 PMCID: PMC7279184 DOI: 10.3390/ijms21103669] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 05/21/2020] [Accepted: 05/21/2020] [Indexed: 12/14/2022] Open
Abstract
Vitamin B6 is a cofactor for approximately 150 reactions that regulate the metabolism of glucose, lipids, amino acids, DNA, and neurotransmitters. In addition, it plays the role of antioxidant by counteracting the formation of reactive oxygen species (ROS) and advanced glycation end-products (AGEs). Epidemiological and experimental studies indicated an evident inverse association between vitamin B6 levels and diabetes, as well as a clear protective effect of vitamin B6 on diabetic complications. Interestingly, by exploring the mechanisms that govern the relationship between this vitamin and diabetes, vitamin B6 can be considered both a cause and effect of diabetes. This review aims to report the main evidence concerning the role of vitamin B6 in diabetes and to examine the underlying molecular and cellular mechanisms. In addition, the relationship between vitamin B6, genome integrity, and diabetes is examined. The protective role of this vitamin against diabetes and cancer is discussed.
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17
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Bao Y, Chen H, Cai Z, Zheng J, Zou J, Shi Y, Jiang L. Advanced glycation end products inhibit neural stem cell differentiation via upregualtion of HDAC3 expression. Brain Res Bull 2020; 159:1-8. [PMID: 32142834 DOI: 10.1016/j.brainresbull.2020.03.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/18/2020] [Accepted: 03/02/2020] [Indexed: 12/12/2022]
Abstract
Diabetes mellitus (DM) is a highly prevalent chronic systemic disease, which may cause cognitive decline and degenerative change of the brain. Neuronal differentiation defects of neural stem cells (NSCs) played an important role in the development and progression of diabetes-associated cognitive decline (DACD), but the intrinsic pathological mechanism remains largely unclear. In the present study, we demonstrated that expression level of HDAC3 was upregulated in diabetic mice with reduced learning and memory abilities and in cultured NSCs after advanced glycation end products (AGEs) induction. In addition, AGEs interfered with normal differentiation of the cultured NSCs, and knocking down the expression of HDAC3 could partially attenuate the inhibitory effect of AGEs on NSCs differentiation. Findings in this study demonstrate that HDAC3 may serve as an experimental clue for revealing the pathogenesis of DACD.
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Affiliation(s)
- Yi Bao
- Department of Endocrinology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Haiyan Chen
- Department of Endocrinology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Zheng Cai
- Department of Neurosurgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Jiaoyang Zheng
- Department of Endocrinology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Junjie Zou
- Department of Endocrinology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Yongquan Shi
- Department of Endocrinology, Changzheng Hospital, Second Military Medical University, Shanghai, China.
| | - Lei Jiang
- Department of Neurosurgery, Changzheng Hospital, Second Military Medical University, Shanghai, China.
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18
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Balsano C, Porcu C, Sideri S. Is copper a new target to counteract the progression of chronic diseases? Metallomics 2018; 10:1712-1722. [DOI: 10.1039/c8mt00219c] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this review, we highlight the importance of a Cu imbalance in the pathogenesis of several chronic inflammatory diseases.
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