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Avgoustou E, Kounatidis D, Vallianou NG, Karampela I, Stratigou T, Dalamaga M. Incidental detection of hereditary bisalbuminemia in a patient with positive DAT coombs: A case-based review. Metabol Open 2024; 23:100307. [PMID: 39185032 PMCID: PMC11342109 DOI: 10.1016/j.metop.2024.100307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2024] [Revised: 07/27/2024] [Accepted: 07/29/2024] [Indexed: 08/27/2024] Open
Abstract
Bisalbuminemia is a rare, typically benign condition marked by the presence of a bifid albumin band on serum protein electrophoresis. It can either be inherited due to a point mutation or acquired in association with various medical conditions, most commonly diabetes mellitus. Bisalbuminuria, the presence of bifid albumin in urine, may or may not accompany bisalbuminemia. Both conditions are often discovered incidentally during screening for monoclonal gammopathy. Bisalbuminemia and related variants provide insights into albumin's genetic diversity and functional roles, influencing clinical diagnostics and research in human genetics. Understanding these variants aids in distinguishing benign conditions from potential disease states, guiding appropriate clinical management. In this case-based review, we present a case of hereditary bisalbuminemia identified unexpectedly during an investigation of a positive Direct Antiglobulin Test Coombs in an adult female patient. This review aims to highlight the key features of bisalbuminemia, a rare condition that should be recognized by clinicians.
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Affiliation(s)
- Elena Avgoustou
- 2th Department of Internal Medicine, Medical School, National & Kapodistrian University of Athens, Hippokratio General Hospital, 11527, Athens, Greece
| | - Dimitris Kounatidis
- Diabetes Center, First Department of Propaedeutic Internal Medicine, Medical School, National and Kapodistrian University of Athens, Laiko General Hospital, 11527, Athens, Greece
| | - Natalia G. Vallianou
- First Department of Internal Medicine, Sismanogleio General Hospital, 15126, Athens, Greece
| | - Irene Karampela
- Second Department of Critical Care, Attikon General University Hospital, Medical School, National and Kapodistrian University of Athens, 12462, Athens, Greece
| | - Theodora Stratigou
- Department of Endocrinology and Metabolism, Evangelismos General Hospital, 10676, Athens, Greece
| | - Maria Dalamaga
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 11527, Athens, Greece
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2
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Nattich-Rak M, Sadowska M, Adamczyk Z, Basinska T, Mickiewicz D, Gadzinowski M. Deposition of Human-Serum-Albumin-Functionalized Spheroidal Particles on Abiotic Surfaces: Reference Kinetic Results for Bioparticles. Molecules 2024; 29:3405. [PMID: 39064983 PMCID: PMC11279952 DOI: 10.3390/molecules29143405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Revised: 07/16/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
Human serum albumin (HSA) corona formation on polymer microparticles of a spheroidal shape was studied using dynamic light scattering and Laser Doppler Velocimetry (LDV). Physicochemical characteristics of the albumin comprising the zeta potential and the isoelectric point were determined as a function of pH for various ionic strengths. Analogous characteristics of the polymer particles were analyzed. The adsorption of albumin on the particles was in situ monitored by LDV. The stability of the HSA-functionalized particle suspensions under various pHs and their electrokinetic properties were also determined. The deposition kinetics of the particles on mica, silica and gold sensors were investigated by optical microscopy, AFM and quartz microbalance (QCM) under diffusion and flow conditions. The obtained results were interpreted in terms of the random sequential adsorption model that allowed to estimate the range of applicability of QCM for determining the deposition kinetics of viruses and bacteria at abiotic surfaces.
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Affiliation(s)
- Małgorzata Nattich-Rak
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, Niezapominajek 8, 30-239 Cracow, Poland;
| | - Marta Sadowska
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, Niezapominajek 8, 30-239 Cracow, Poland;
| | - Zbigniew Adamczyk
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, Niezapominajek 8, 30-239 Cracow, Poland;
| | - Teresa Basinska
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Henryka Sienkiewicza 112, 90-363 Lodz, Poland; (T.B.); (D.M.); (M.G.)
| | - Damian Mickiewicz
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Henryka Sienkiewicza 112, 90-363 Lodz, Poland; (T.B.); (D.M.); (M.G.)
| | - Mariusz Gadzinowski
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Henryka Sienkiewicza 112, 90-363 Lodz, Poland; (T.B.); (D.M.); (M.G.)
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Shi M, Duan X, Zheng X, Lu D, Ge Y, Zhang N, Liu Y, You J, Xue H, Yin L. Quantification of human serum albumin by combining chymotrypsin/trypsin digestion coupled with LC-MS/MS technique. Anal Biochem 2023; 680:115316. [PMID: 37689095 DOI: 10.1016/j.ab.2023.115316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/04/2023] [Accepted: 09/06/2023] [Indexed: 09/11/2023]
Abstract
The quantification of albumin is important in clinical medicine because the concentration of albumin in biological fluids is closely related to human health. In this study, we developed a highly selective and robust assay to determine human serum albumin (HSA) in human plasma by combining chymotrypsin/trypsin digestion coupled with targeted LC-MS/MS technique. Human plasma samples were denatured, reduced, alkylated, and digested with both chymotrypsin and trypsin to generate surrogate peptides. A unique chymotryptic peptide (NAETF) arising from human serum albumin was finally selected for targeted LC-MS/MS detection and quantification. Numerous parameters related to the targeted LC-MS/MS assay were evaluated, including lower limit of quantitation (LLOQ), linearity range, enzyme digestion efficiency, accuracy and precision. The LC-MS/MS assay was linear in the concentration range 0.05-1 mg/mL with intra-day and inter-day precision <10.2% and accuracy ranging from -3.94% to 4.89%. The assay was successfully applied to determine HSA in 148 human plasma samples.
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Affiliation(s)
- Meiyun Shi
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China; Aim Honesty Biopharmaceutical Co. LTD, Dalian, 116600, PR China
| | - Xujian Duan
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China
| | - Xinyue Zheng
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China
| | - Di Lu
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China
| | - Yuncheng Ge
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China
| | - Ning Zhang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China
| | - Yajun Liu
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China
| | - Jiansong You
- Aim Honesty Biopharmaceutical Co. LTD, Dalian, 116600, PR China
| | - Hongyu Xue
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China.
| | - Lei Yin
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 1242(21), PR China.
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Mishra V, Pathak AK, Bandyopadhyay T. Binding of human serum albumin with uranyl ion at various pH: an all atom molecular dynamics study. J Biomol Struct Dyn 2023; 41:7318-7328. [PMID: 36099177 DOI: 10.1080/07391102.2022.2120080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 08/26/2022] [Indexed: 10/14/2022]
Abstract
Uranium is routinely handled in various stages of nuclear fuel cycle and its association with human serum albumin (HSA) has been reported in literature, however, their binding characteristics still remains obscure. The present study aims to understand interaction of uranium with HSA by employing all atom molecular dynamics simulation of the HSA-metal ion complex. His67, His247 and Asp249 residues constitute the major binding site of HSA, which capture the uranyl ion (UO22+). A total of six sets of initial coordinates are used for Zn2+-HSA and UO22+-HSA system at pH = 4, 7.4 and 9, respectively. Enhance sampling method, namely, well-tempered meta-dynamics (WT-MtD) is employed to study the binding and un-binding processes of UO22+ and Zn2+ ions. Potential of mean force (PMF) profiles are generated for all the six sets of complexes from the converged WT-MtD run. Various basins and barriers are observed along the (un)binding pathways. Hydrogen bond dynamics and short-range Coulomb interactions are evaluated from the equilibrium run at each basins and barriers for both the ions at all pH values. The binding of UO22+ ion with HSA is the result of the dynamical balance between UO22+-HSA and UO22+-water short range Coulomb interactions. Zn2+ ion interact more strongly than UO22+ at all pH through short range Coulomb interactions. PMF values further concludes that UO22+ cannot associate to the Zn2+ bound HSA protein but can be captured by free HSA at all pH values i.e. endosomal, alkaline and physiological pH.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Vijayakriti Mishra
- Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - Arup Kumar Pathak
- Homi Bhabha National Institute, Mumbai, India
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Tusar Bandyopadhyay
- Homi Bhabha National Institute, Mumbai, India
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai, India
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Titus-McQuillan JE, Nanni AV, McIntyre LM, Rogers RL. Estimating transcriptome complexities across eukaryotes. BMC Genomics 2023; 24:254. [PMID: 37170194 PMCID: PMC10173493 DOI: 10.1186/s12864-023-09326-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 04/20/2023] [Indexed: 05/13/2023] Open
Abstract
BACKGROUND Genomic complexity is a growing field of evolution, with case studies for comparative evolutionary analyses in model and emerging non-model systems. Understanding complexity and the functional components of the genome is an untapped wealth of knowledge ripe for exploration. With the "remarkable lack of correspondence" between genome size and complexity, there needs to be a way to quantify complexity across organisms. In this study, we use a set of complexity metrics that allow for evaluating changes in complexity using TranD. RESULTS We ascertain if complexity is increasing or decreasing across transcriptomes and at what structural level, as complexity varies. In this study, we define three metrics - TpG, EpT, and EpG- to quantify the transcriptome's complexity that encapsulates the dynamics of alternative splicing. Here we compare complexity metrics across 1) whole genome annotations, 2) a filtered subset of orthologs, and 3) novel genes to elucidate the impacts of orthologs and novel genes in transcript model analysis. Effective Exon Number (EEN) issued to compare the distribution of exon sizes within transcripts against random expectations of uniform exon placement. EEN accounts for differences in exon size, which is important because novel gene differences in complexity for orthologs and whole-transcriptome analyses are biased towards low-complexity genes with few exons and few alternative transcripts. CONCLUSIONS With our metric analyses, we are able to quantify changes in complexity across diverse lineages with greater precision and accuracy than previous cross-species comparisons under ortholog conditioning. These analyses represent a step toward whole-transcriptome analysis in the emerging field of non-model evolutionary genomics, with key insights for evolutionary inference of complexity changes on deep timescales across the tree of life. We suggest a means to quantify biases generated in ortholog calling and correct complexity analysis for lineage-specific effects. With these metrics, we directly assay the quantitative properties of newly formed lineage-specific genes as they lower complexity.
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Affiliation(s)
- James E Titus-McQuillan
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, NC, 28223, USA.
| | - Adalena V Nanni
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL, 32611, USA
- University of Florida Genetics Institute, University of Florida, Gainesville, FL, 32611, USA
| | - Lauren M McIntyre
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL, 32611, USA
- University of Florida Genetics Institute, University of Florida, Gainesville, FL, 32611, USA
| | - Rebekah L Rogers
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, NC, 28223, USA
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Cerquetella M, Mangiaterra S, Rossi G, Gavazza A, Marchegiani A, Sagratini G, Ricciutelli M, Angeloni S, Fioretti L, Marini C, Pucciarelli S, Vincenzetti S. Fecal Protein Profile in Eight Dogs Suffering from Acute Uncomplicated Diarrhea before and after Treatment. Vet Sci 2023; 10:vetsci10030233. [PMID: 36977272 PMCID: PMC10051911 DOI: 10.3390/vetsci10030233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/13/2023] [Accepted: 03/15/2023] [Indexed: 03/30/2023] Open
Abstract
Acute diarrhea is a very frequent condition affecting dogs; nevertheless, little is known about what happens in the GI tract during such conditions. Proteomics allows the study of proteins present in a specific biologic substrate, and fecal proteomic investigations have been recently implemented to study GI diseases in dogs. In the present study, the fecal protein profiles of eight dogs suffering from acute uncomplicated diarrhea at the time of inclusion was investigated for the first time, and then the same patients were followed, replicating two further evaluations at two subsequent time points (after 2 and 14 days from the first presentation), with the aim of gaining possible new insights regarding the pathologic changes in the gastrointestinal environment during such conditions. Two-dimensional gel electrophoresis (2-DE) was performed, followed by mass spectrometry. Nine spots, corresponding to four (groups of) proteins (i.e., albumin, alkaline phosphatase, chymotrypsin-C-like, and some immunoglobulins), showed significant differences at two or more of the three time points investigated, almost all behaving similarly and decreasing at T1 (2 days after the onset of the condition) and significantly increasing at T2 (14 days after the onset), mainly evidencing a reaction of the organism. Further studies including a greater number of patients and possibly different techniques are needed to confirm the present findings.
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Affiliation(s)
- Matteo Cerquetella
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Circonvallazione 93/95, 62024 Matelica, Italy
| | | | - Giacomo Rossi
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Circonvallazione 93/95, 62024 Matelica, Italy
| | - Alessandra Gavazza
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Circonvallazione 93/95, 62024 Matelica, Italy
| | - Andrea Marchegiani
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Circonvallazione 93/95, 62024 Matelica, Italy
| | - Gianni Sagratini
- School of Pharmacy, University of Camerino, Via Sant'Agostino 1, 62032 Camerino, Italy
| | - Massimo Ricciutelli
- Chemistry Interdisciplinary Project (ChIP) Laboratory of LC-MS, University of Camerino, 62032 Camerino, Italy
| | - Simone Angeloni
- Chemistry Interdisciplinary Project (ChIP) Laboratory of LC-MS, University of Camerino, 62032 Camerino, Italy
| | | | - Carlotta Marini
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Circonvallazione 93/95, 62024 Matelica, Italy
| | - Stefania Pucciarelli
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile II da Varano, 62032 Camerino, Italy
| | - Silvia Vincenzetti
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Circonvallazione 93/95, 62024 Matelica, Italy
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Nattich-Rak M, Sadowska M, Motyczyńska M, Adamczyk Z. Mimicking Pseudo-Virion Interactions with Abiotic Surfaces: Deposition of Polymer Nanoparticles with Albumin Corona. Biomolecules 2022; 12:1658. [PMID: 36359008 PMCID: PMC9687657 DOI: 10.3390/biom12111658] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/02/2022] [Accepted: 11/02/2022] [Indexed: 10/14/2023] Open
Abstract
Adsorption of human serum albumin (HSA) molecules on negatively charged polystyrene microparticles was studied using the dynamic light scattering, the electrophoretic and the solution depletion methods involving atomic force microscopy. Initially, the physicochemical characteristics of the albumin comprising the hydrodynamic diameter, the zeta potential and the isoelectric point were determined as a function of pH. Analogous characteristics of the polymer particles were acquired, including their size and zeta potential. The formation of albumin corona on the particles was investigated in situ by electrophoretic mobility measurements. The size, stability and electrokinetic properties of the particles with the corona were also determined. The particle diameter was equal to 125 nm, which coincides with the size of the SARS-CoV-2 virion. The isoelectric point of the particles appeared at a pH of 5. The deposition kinetics of the particles was determined by atomic force microscopy (AFM) under diffusion and by quartz microbalance (QCM) under flow conditions. It was shown that the deposition rate at a gold sensor abruptly vanished with pH following the decrease in the zeta potential of the particles. It is postulated that the acquired results can be used as useful reference systems mimicking virus adsorption on abiotic surfaces.
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Affiliation(s)
- Małgorzata Nattich-Rak
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Cracow, Poland
| | - Marta Sadowska
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Cracow, Poland
| | - Maja Motyczyńska
- The Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, ul. Gronostajowa 7, 30-387 Cracow, Poland
| | - Zbigniew Adamczyk
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Cracow, Poland
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8
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Variations in the Human Serum Albumin Gene: Molecular and Functional Aspects. Int J Mol Sci 2022; 23:ijms23031159. [PMID: 35163085 PMCID: PMC8835714 DOI: 10.3390/ijms23031159] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/18/2022] [Accepted: 01/19/2022] [Indexed: 01/14/2023] Open
Abstract
The human albumin gene, the most abundant serum protein, is located in the long arm of chromosome 4, near the centromere, position 4q11–3. It is divided by 14 intervening introns into 15 exons, the last of which is untranslated. To date, 74 nucleotide substitutions (mainly missense) have been reported, determining the circulating variants of albumin or pre-albumin. In a heterozygous state, this condition is known as alloalbuminaemia or bisalbuminaemia (OMIM # 103600). The genetic variants are not associated with disease, neither in the heterozygous nor in the homozygous form. Only the variants resulting in familial dysalbuminaemic hyperthyroxinaemia and hypertriiodothyroninaemia are of clinical relevance because affected individuals are at risk of inappropriate treatment or may have adverse drug effects. In 28 other cases, the pathogenic variants (mainly affecting splicing, nonsense, and deletions), mostly in the homozygous form, cause a premature stop in the synthesis of the protein and lead to the condition known as congenital analbuminaemia. In this review, we will summarize the current knowledge of genetic and molecular aspects, functional consequences and potential therapeutic uses of the variants. We will also discuss the molecular defects resulting in congenital analbuminaemia, as well as the biochemical and clinical features of this rare condition
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Westphalen H, Kalugin D, Abdelrasoul A. Structure, function, and adsorption of highly abundant blood proteins and its critical influence on hemodialysis patients: A critical review. BIOMEDICAL ENGINEERING ADVANCES 2021. [DOI: 10.1016/j.bea.2021.100021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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10
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Kapatia G, Wadhwa M, Malhotra P, Prakash G, Aggarwal R. Bisalbuminemia: A Pathologist's Insight of an Uncommon Phenomenon. J Lab Physicians 2021; 13:219-223. [PMID: 34602785 PMCID: PMC8478498 DOI: 10.1055/s-0041-1730878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Background The incidence of a bifid electrophoretic pattern in the albumin region on serum protein electrophoresis is an infrequent phenomenon. The availability of literature from India is scarce and is limited to case reports. Objective The aim of the study is to analyze the frequency of bisalbuminemia in an Indian referral facility. The study delved into their clinical associations. Material and Methods The retrospective case records of the patient from the departmental database were scrutinized. The study subjects were for an 8-year study period. Results There were about 39,900 serum electrophoresis performed in an 8-year study period. A total of 40 cases of bisalbuminemia were detected. The incidence in our cohort was 0.01%. Conclusion Bisalbuminemia, an overtly benign condition, is infrequent in Indian population although not rare. It is associated with several clinical disorders; however, the association seems to be plausibly coincidental.
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Affiliation(s)
- Gargi Kapatia
- Department of Immunopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Monika Wadhwa
- Department of Internal Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Pankaj Malhotra
- Department of Internal Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Gaurav Prakash
- Department of Immunopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Ritu Aggarwal
- Department of Immunopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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A Comprehensive Spectroscopic Analysis of the Ibuprofen Binding with Human Serum Albumin, Part II. Sci Pharm 2021. [DOI: 10.3390/scipharm89030030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Human serum albumin (HSA) is the most abundant human plasma protein. HSA plays a crucial role in many binding endos- and exogenous substances, which affects their pharmacological effect. The innovative aspect of the study is not only the interaction of fatted (HSA) and defatted (dHSA) human serum albumin with ibuprofen (IBU), but the analysis of the influence of temperature on the structural modifications of albumin and the interaction between the drug and proteins from the temperature characteristic of near hypothermia (308 K) to the temperature reflecting inflammation in the body (312 K and 314 K). Ibuprofen is a non-steroidal anti-inflammatory drug. IBU is used to relieve acute pain, inflammation, and fever. To determine ibuprofen’s binding site in the tertiary structure of HSA and dHSA, fluorescence spectroscopy was used. On its basis, the fluorescent emissive spectra of albumin (5 × 10−6 mol/dm3) without and with the presence of ibuprofen (1 × 10−5–1 × 10−4 mol/dm3) was recorded. The IBU-HSA complex’s fluorescence was excited by radiation of wavelengths of λex 275 nm and λex 295 nm. Spectrophotometric spectroscopy allowed for recording the absorbance spectra (zero-order and second derivative absorption spectra) of HSA and dHSA under the influence of ibuprofen (1 × 10−4 mol/dm3). To characterize the changes of albumin structure the presence of IBU, circular dichroism was used. The data obtained show that the presence of fatty acids and human serum albumin temperature influences the strength and type of interaction between serum albumin and drug. Ibuprofen binds more strongly to defatted human serum albumin than to albumin in the presence of fatty acids. Additionally, stronger complexes are formed with increasing temperatures. The competitive binding of ibuprofen and fatty acids to albumin may influence the concentration of free drug fraction and thus its therapeutic effect.
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12
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Sacchi A, Gasparri AM, Monieri M, Anderluzzi G, Colombo B, Gori A, Corti A, Curnis F. Nanogold Functionalized With Lipoamide- isoDGR: A Simple, Robust and Versatile Nanosystem for αvβ3-Integrin Targeting. Front Chem 2021; 9:690357. [PMID: 34124009 PMCID: PMC8194705 DOI: 10.3389/fchem.2021.690357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 05/17/2021] [Indexed: 11/13/2022] Open
Abstract
Gold nanoparticles functionalized with isoDGR, a tripeptide motif that recognizes αvβ3 integrin overexpressed in tumor vessels, have been used as nano-vectors for the delivery of cytokines to tumors. Functionalization of nanogold with this peptide has been achieved by coating nanoparticles with a peptide-albumin conjugate consisting of heterogeneous molecules with a variable number of linkers and peptides. To reduce nanodrug heterogeneity we have designed, produced and preclinically evaluated a homogeneous and well-defined reagent for nanogold functionalization, consisting of a head-to-tail cyclized CGisoDGRG peptide (iso1) coupled via its thiol group to maleimide-PEG11-lipoamide (LPA). The resulting iso1-PEG11-LPA compound can react with nanogold via lipoamide to form a stable bond. In vitro studies have shown that iso1, after coupling to nanogold, maintains its capability to bind purified αvβ3 and αvβ3-expressing cells. Nanogold functionalized with this peptide can also be loaded with bioactive tumor necrosis factor-α (TNF) to form a bi-functional nanodrug that can be stored for three days at 37°C or >1 year at low temperatures with no loss αvβ3-binding properties and TNF-cytolytic activity. Nanoparticles functionalized with both iso1 and TNF induced tumor eradication in WEHI-164 fibrosarcoma-bearing mice more efficiently than nanoparticles lacking the iso1 targeting moiety. These results suggest that iso1-PEG11-LPA is an efficient and well-defined reagent that can be used to produce robust and more homogeneous nano-vectors for the delivery of TNF and other cytokines to αvβ3 positive cells.
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Affiliation(s)
- Angelina Sacchi
- Tumor Biology and Vascular Targeting Unit, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Anna Maria Gasparri
- Tumor Biology and Vascular Targeting Unit, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | | | | | - Barbara Colombo
- Tumor Biology and Vascular Targeting Unit, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Alessandro Gori
- Istituto di Scienze e Tecnologie Chimiche, C.N.R., Milan, Italy
| | - Angelo Corti
- Tumor Biology and Vascular Targeting Unit, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Università Vita-Salute San Raffaele, Milan, Italy
| | - Flavio Curnis
- Tumor Biology and Vascular Targeting Unit, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, Milan, Italy
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13
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A Patient with Genetic Bisalbuminemia. Am J Med Sci 2021; 362:e53-e54. [PMID: 33992601 DOI: 10.1016/j.amjms.2021.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/04/2021] [Indexed: 11/22/2022]
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14
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Jun H, Rong Y, Yih C, Ho J, Cheng W, Kiang TKL. Comparisons of Four Protein-Binding Models Characterizing the Pharmacokinetics of Unbound Phenytoin in Adult Patients Using Non-Linear Mixed-Effects Modeling. Drugs R D 2020; 20:343-358. [PMID: 33026608 PMCID: PMC7691416 DOI: 10.1007/s40268-020-00323-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/19/2020] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Phenytoin is extensively protein bound with a narrow therapeutic range. The unbound phenytoin is pharmacologically active, but total concentrations are routinely measured in clinical practice. The relationship between free and total phenytoin has been described by various binding models with inconsistent findings. Systematic comparison of these binding models in a single experimental setting is warranted to determine the optimal binding behaviors. METHODS Non-linear mixed-effects modeling was conducted on retrospectively collected data (n = 37 adults receiving oral or intravenous phenytoin) using a stochastic approximation expectation-maximization algorithm in MonolixSuite-2019R2. The optimal base structural model was initially developed and utilized to compare four binding models: Winter-Tozer, linear binding, non-linear single-binding site, and non-linear multiple-binding site. Each binding model was subjected to error and covariate modeling. The final model was evaluated using relative standard errors (RSEs), goodness-of-fit plots, visual predictive check, and bootstrapping. RESULTS A one-compartment, first-order absorption, Michaelis-Menten elimination, and linear protein-binding model best described the population pharmacokinetics of free phenytoin at typical clinical concentrations. The non-linear single-binding-site model also adequately described phenytoin binding but generated larger RSEs. The non-linear multiple-binding-site model performed the worst, with no identified covariates. The optimal linear binding model suggested a relatively high binding capacity using a single albumin site. Covariate modeling indicated a positive relationship between albumin concentration and the binding proportionality constant. CONCLUSIONS The linear binding model best described the population pharmacokinetics of unbound phenytoin in adult subjects and may be used to improve the prediction of free phenytoin concentrations.
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Affiliation(s)
- Heajin Jun
- College of Pharmacy, Seoul National University, Seoul, Republic of Korea
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Katz Group Centre for Pharmacy and Health Research, Room 3-142D, 11361-87 Avenue, Edmonton, AB, T6G 2E1, Canada
| | - Yan Rong
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Katz Group Centre for Pharmacy and Health Research, Room 3-142D, 11361-87 Avenue, Edmonton, AB, T6G 2E1, Canada
| | - Catharina Yih
- Department of Pharmacy, Vancouver General Hospital, Vancouver, BC, Canada
| | - Jordan Ho
- Department of Pharmacy, Vancouver General Hospital, Vancouver, BC, Canada
| | - Wendy Cheng
- Department of Pharmacy, Vancouver General Hospital, Vancouver, BC, Canada
| | - Tony K L Kiang
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Katz Group Centre for Pharmacy and Health Research, Room 3-142D, 11361-87 Avenue, Edmonton, AB, T6G 2E1, Canada.
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15
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Villanueva‐Saz S, Ballesté C, Fernández Casasnovas A, Yzuel Estevez A, Verde Arribas MT. Bisalbuminemia in a dog with leishmaniosis after anti‐
Leishmania
therapeutic protocol administration: a rare condition detected in the electrophoretogram. VETERINARY RECORD CASE REPORTS 2020. [DOI: 10.1136/vetreccr-2020-001290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Sergio Villanueva‐Saz
- Pharmacology and Physiology Department – Clinical Immunology LaboratoryVeterinary FacultyUniversity of ZaragozaZaragozaSpain
| | | | - Antonio Fernández Casasnovas
- Animal Pathology Department – Clinical Immunology LaboratoryVeterinary FacultyUniversity of ZaragozaZaragozaSpain
| | - Andrés Yzuel Estevez
- Clinical Immunology LaboratoryVeterinary FacultyUniversity of ZaragozaZaragozaSpain
| | - Maria Teresa Verde Arribas
- Animal Pathology Department – Clinical Immunology LaboratoryVeterinary FacultyUniversity of ZaragozaZaragozaSpain
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16
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Lugat A, Caillon H, Chaillous L, Cariou B, Drui D. Severely uncontrolled diabetes: a new aetiology of acquired bisalbuminaemia. DIABETES & METABOLISM 2020; 46:341-342. [PMID: 30660760 DOI: 10.1016/j.diabet.2019.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 01/06/2019] [Indexed: 06/09/2023]
Affiliation(s)
- Alexandre Lugat
- L'institut du thorax, Department of Endocrinology, CHU de Nantes, 44000 Nantes, France
| | - Hélène Caillon
- Department of Biochemistry, CHU de Nantes, 44000 Nantes, France
| | - Lucy Chaillous
- L'institut du thorax, Department of Endocrinology, CHU de Nantes, 44000 Nantes, France
| | - Bertrand Cariou
- L'institut du thorax, Department of Endocrinology, CHU de Nantes, 44000 Nantes, France.
| | - Delphine Drui
- L'institut du thorax, Department of Endocrinology, CHU de Nantes, 44000 Nantes, France
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17
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Leblanc Y, Berger M, Seifert A, Bihoreau N, Chevreux G. Human serum albumin presents isoform variants with altered neonatal Fc receptor interactions. Protein Sci 2020; 28:1982-1992. [PMID: 31583777 DOI: 10.1002/pro.3733] [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] [Received: 07/17/2019] [Revised: 09/09/2019] [Accepted: 09/18/2019] [Indexed: 12/23/2022]
Abstract
Human serum albumin (HSA) is the most abundant protein in plasma and presents the particularity, with IgG, to have an extraordinary long serum half-life conferred by its interaction with the neonatal Fc receptor (FcRn). If the impact of IgG post-translational modifications (PTMs) on FcRn binding is well documented, it is far less reported for HSA despite numerous PTMs occurring on the protein in plasma. HSA is susceptible to numerous degradation reactions in plasma, because of aging, oxidative stress or liver and pancreas related pathologies. In the present study, we combined FcRn affinity chromatography and mass spectrometry to investigate the impact of HSA PTMs upon FcRn binding. This methodology presents the advantage to distinguish the effect of a single modification from a plasma HSA preparation made of a mixture of different isoforms. Cys34 oxidation, Lys525 glycation, and Leu585 C-terminal truncation, which are modifications related to several pathological conditions, were demonstrated to act negatively on HSA-FcRn interaction. The HSA-FcRn binding alteration generated by these modifications is consistent with their vicinity with the interaction interface of the two proteins. Results were discussed regarding altered half-life of HSA observed in several disease states and pave the way toward new understandings of the hypoalbuminemia pathogenesis. SIGNIFICANCE STATEMENT: In this study, we investigated the impact of several post-translational modifications of HSA toward its ability to bind to the neonatal Fc receptor using in vitro affinity chromatography, mass spectrometry, and surface plasmon resonance. Cys34 oxidation, Lys525 glycation, and Leu585 C-terminal truncation were demonstrated to decrease HSA-FcRn binding. These modifications occurring in circulating HSA were discussed in relation to several pathologies as well as for the use of HSA as a therapeutic protein.
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Affiliation(s)
- Yann Leblanc
- Analytical Department of LFB Biotechnologies, Courtabœuf, France
| | - Marie Berger
- Analytical Department of LFB Biotechnologies, Courtabœuf, France
| | | | - Nicolas Bihoreau
- Analytical Department of LFB Biotechnologies, Courtabœuf, France
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18
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Szkudlarek A, Wilk M, Maciążek-Jurczyk M. In Vitro Investigations of Acetohexamide Binding to Glycated Serum Albumin in the Presence of Fatty Acid. Molecules 2020; 25:molecules25102340. [PMID: 32429512 PMCID: PMC7287933 DOI: 10.3390/molecules25102340] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/15/2020] [Accepted: 05/16/2020] [Indexed: 12/24/2022] Open
Abstract
The interaction of drugs with human serum albumin (HSA) is an important element of therapy. Albumin affects the distribution of the drug substance in the body, as well as its pharmacokinetic and pharmacodynamic properties. On the one hand, inflammation and protein glycation, directly associated with many pathological conditions and old age, can cause structural and functional modification of HSA, causing binding disorders. On the other hand, the widespread availability of various dietary supplements that affect the content of fatty acids in the body means that knowledge of the binding activity of transporting proteins, especially in people with chronic diseases, e.g., diabetes, will achieve satisfactory results of the selected therapy. Therefore, the aim of the present study was to evaluate the effect of a mixture of fatty acids (FA) with different saturated and unsaturated acids on the affinity of acetohexamide (AH), a drug with hypoglycaemic activity for glycated albumin, simulating the state of diabetes in the body. Based on fluorescence studies, we can conclude that the presence of both saturated and unsaturated FA disturbs the binding of AH to glycated albumin. Acetohexamide binds more strongly to defatted albumin than to albumin in the presence of fatty acids. The competitive binding of AH and FA to albumin may influence the concentration of free drug fraction and thus its therapeutic effect.
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Affiliation(s)
- Agnieszka Szkudlarek
- Department of Physical Pharmacy, Faculty of Pharmaceutical Siences in Sosnowiec, Medical University of Silesia in Katowice, 40-001 Katowice, Poland;
- Correspondence: ; Tel.: +48-32-364-1581
| | - Michał Wilk
- Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education in Katowice, 40-001 Katowice, Poland;
| | - Małgorzata Maciążek-Jurczyk
- Department of Physical Pharmacy, Faculty of Pharmaceutical Siences in Sosnowiec, Medical University of Silesia in Katowice, 40-001 Katowice, Poland;
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Ward RA, Beck W, Bernardo AA, Alves FC, Stenvinkel P, Lindholm B. Hypoalbuminemia: a price worth paying for improved dialytic removal of middle-molecular-weight uremic toxins? Nephrol Dial Transplant 2020; 34:901-907. [PMID: 30102329 DOI: 10.1093/ndt/gfy236] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Indexed: 01/17/2023] Open
Abstract
Hemodiafiltration (HDF) increases the removal of middle-molecular-weight uremic toxins and may improve outcomes in patients with end-stage kidney disease (ESKD), but it requires complex equipment and comes with risks associated with infusion of large volumes of substitution solution. New high-flux hemodialysis membranes with improved diffusive permeability profiles do not have these limitations and offer an attractive alternative to HDF. However, both strategies are associated with increased albumin loss into the dialysate, raising concerns about the potential for decreased serum albumin concentrations that have been associated with poor outcomes in ESKD. Many factors can contribute to hypoalbuminemia in ESKD, including protein energy wasting, inflammation, volume expansion, renal loss and loss into the dialysate; of these factors, loss into the dialysate is not necessarily the most important. Furthermore, recent studies suggest that mild hypoalbuminemia per se is not an independent predictor of increased mortality in dialysis patients, but in combination with inflammation it is a poor prognostic sign. Thus, whether hypoalbuminemia predisposes to increased morbidity and mortality may depend on the presence or absence of inflammation. In this review we summarize recent findings on the role of dialysate losses in hypoalbuminemia and the importance of concomitant inflammation on outcomes in patients with ESKD. Based on these findings, we discuss whether hypoalbuminemia may be a price worth paying for increased dialytic removal of middle-molecular-weight uremic toxins.
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Affiliation(s)
| | - Werner Beck
- R&D, Baxter International Inc., Hechingen, Germany
| | | | - Filipa C Alves
- Department of Nephrology, Hospital Espírito Santo, Évora, Portugal.,Division of Renal Medicine and Baxter Novum, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Peter Stenvinkel
- Division of Renal Medicine and Baxter Novum, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Bengt Lindholm
- Division of Renal Medicine and Baxter Novum, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
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20
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Dieu X, Sueur G, Moal V, Boux de Casson F, Bouzamondo N, Bouhours N, Briet C, Illouz F, Reynier P, Coutant R, Rodien P, Mirebeau-Prunier D. Apparent resistance to thyroid hormones: From biological interference to genetics. ANNALES D'ENDOCRINOLOGIE 2019; 80:280-285. [DOI: 10.1016/j.ando.2019.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 04/26/2019] [Accepted: 06/15/2019] [Indexed: 12/31/2022]
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21
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Dabboubi R, Amri Y, Sahli C, Fredj SH, Essaddam L, Zoghlami A, Ben Becher S, Messaoud T. Inherited bisalbuminemia with growth hormone deficiency. Clin Chem Lab Med 2019; 57:e226-e229. [DOI: 10.1515/cclm-2018-1133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 01/25/2019] [Indexed: 11/15/2022]
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22
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Role of Herborn (K240E) and Milano Slow (D375H) human serum albumin variants towards binding of phenylbutazone and ibuprofen. Int J Biol Macromol 2019; 134:645-652. [PMID: 31100401 DOI: 10.1016/j.ijbiomac.2019.05.075] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 05/01/2019] [Accepted: 05/13/2019] [Indexed: 02/06/2023]
Abstract
Human serum albumin (HSA) is the binding cargo in blood plasma. The binding of drugs to HSA determines the pharmacokinetics and pharmacodynamics of the drugs. There are 67 natural genetic variants of HSA were reported in literature. Studying the effect of albumin modifications on drug binding helps to treat the patients with proper medication. In the present study, we have aimed to understand the effect of two natural variants of HSA, such as Herborn (K240E) and Milano Slow (D375H) on the binding of phenylbutazone and ibuprofen. For this, we have generated K240E and D375H mutants and also double mutant (K240E/D375H) of HSA using site directed mutagenesis. The recombinant HSA and its variants were expressed in Pichia pastoris. The interaction of HSA and its variants to phenylbutazone and ibuprofen was studied using fluorescence spectroscopy. Our results showed that there is no significant effect of K240E and D375H mutations on phenylbutazone and ibuprofen binding. But the effect is significant when both the mutations were there in a single protein (K240E/D375H). Further, the CD spectroscopy data showed that there is no effect of phenylbutazone and ibuprofen binding on the conformation of protein, except in case of D375H, where there is a conformational change in the binding pocket with the ibuprofen binding.
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23
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Ilyina AP, Sidorsky EV, Elistratov PA, Chekova VM, Yamskova VP, Yamskov IA. Analysis of Serum Albumin Isoforms Belonging to Membranotropic Homeostatic Tissue-Specific Bioregulators Isolated from Different Mammalian Tissues. APPL BIOCHEM MICRO+ 2019. [DOI: 10.1134/s0003683819040057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Dubey S, Madana SK, Kallubai M, Sarkar A, Subramanyam R. Unraveling the stability of plasma proteins upon interaction of synthesized uridine products: biophysical and molecular dynamics approach. J Biomol Struct Dyn 2019; 38:1927-1937. [PMID: 31099311 DOI: 10.1080/07391102.2019.1620127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Most of the drugs binding to human serum albumin (HSA) are transported to various parts of the body. Here, we have studied the molecular interaction between HSA and synthesized uridine derivatives, 1-[(3R, 4S, 5 R)-2-methyl-3, 4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrimidine-2,4-dion.)(C-MU); [(2R,3R,4R,5R)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3,4-dihydroxy-4-methyl-tetrahydrofuran-2-yl] methyl methyl phosphochloridate (CM-MU) and [(2R,3S,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-2-methyl-3,4-dihydroxyoxolan-2-yl] methyl dihydrogen phosphate (P-MU). Cytotoxic studies of these synthesized compounds with mouse macrophages (RAW 246.7) and HeLa cells (human cervical cancer cells) and binding mechanism of these uridine derivatives with HSA were performed. Subsequently, fluorescence quenching was observed upon titration of uridine derivatives with HSA via static mode of quenching, and the binding constants (K2-C-MU = 4 ± 0.03 × 104M-1, K5-CM-MU = 1.95 ± 0.03 × 104 M-1 and K5-P-MU =1.56 ± 0.03 × 104 M-1) were found to be in sync with the computational results. Further, molecular displacement and molecular docking data revealed that all the derivatives are binding in the subdomain IIA and IIB regions of HSA. The protein secondary structure of complexes was determined by circular dichroism, indicating partial unfolding of the protein upon addition of the uridine derivatives. Furthermore, atomic force microscopy data reveal the change in topology upon binding of 2-C-MU, 5-CM-MU and 5-P-MU with HSA, indicating change in the microenvironment around tryptophan region. Additionally, cytotoxicity studies on HeLa and Raw Cell lines suggested that these molecules have significant anti-proliferative and anti-inflammatory properties. Hence, the study may be of help for development of new drugs based on uridine derivatives which may be helpful for combating various potential diseases.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Shreya Dubey
- Department of Plant Science, School of Life Sciences, University of Hyderabad, Gachibowli, Telangana, India
| | - Suneel Kumar Madana
- Department of Chemistry, Periyar Maniammai Institute of Science & Technology, Thanjavur, India
| | - Monika Kallubai
- Department of Plant Science, School of Life Sciences, University of Hyderabad, Gachibowli, Telangana, India
| | - Arijit Sarkar
- Department of Plant Science, School of Life Sciences, University of Hyderabad, Gachibowli, Telangana, India
| | - Rajagopal Subramanyam
- Department of Plant Science, School of Life Sciences, University of Hyderabad, Gachibowli, Telangana, India
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25
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Minchiotti L, Caridi G, Campagnoli M, Lugani F, Galliano M, Kragh-Hansen U. Diagnosis, Phenotype, and Molecular Genetics of Congenital Analbuminemia. Front Genet 2019; 10:336. [PMID: 31057599 PMCID: PMC6478806 DOI: 10.3389/fgene.2019.00336] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 03/29/2019] [Indexed: 12/25/2022] Open
Abstract
Congenital analbuminemia (CAA) is an inherited, autosomal recessive disorder with an incidence of 1:1,000,000 live birth. Affected individuals have a strongly decreased concentration, or complete absence, of serum albumin. The trait is usually detected by serum protein electrophoresis and immunochemistry techniques. However, due to the existence of other conditions in which the albumin concentrations are very low or null, analysis of the albumin (ALB) gene is necessary for the molecular diagnosis. CAA can lead to serious consequences in the prenatal period, because it can cause miscarriages and preterm birth, which often is due to oligohydramnios and placental abnormalities. Neonatally and in early childhood the trait is a risk factor that can lead to death, mainly from fluid retention and infections in the lower respiratory tract. By contrast, CAA is better tolerated in adulthood. Clinically, in addition to the low level of albumin, the patients almost always have hyperlipidemia, but they usually also have mild oedema, reduced blood pressure and fatigue. The fairly mild symptoms in adulthood are due to compensatory increment of other plasma proteins. The condition is rare; clinically, only about 90 cases have been detected worldwide. Among these, 53 have been studied by sequence analysis of the ALB gene, allowing the identification of 27 different loss of function (LoF) pathogenic variants. These include a variant in the start codon, frame-shift/insertions, frame-shift/deletions, nonsense variants, and variants affecting splicing. Most are unique, peculiar for each affected family, but one, a frame-shift deletion called Kayseri, has been found to cause about one third of the known cases allowing to presume a founder effect. This review provides an overview of the literature about CAA, about supportive and additional physiological and pharmacological information obtained from albumin-deficient mouse and rat models and a complete and up-to-date dataset of the pathogenic variants identified in the ALB gene.
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Affiliation(s)
| | - Gianluca Caridi
- Laboratory of Molecular Nephrology, Istituto Giannina Gaslini (IRCCS), Genoa, Italy
| | | | - Francesca Lugani
- Laboratory of Molecular Nephrology, Istituto Giannina Gaslini (IRCCS), Genoa, Italy
| | - Monica Galliano
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
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Szkudlarek A, Pożycka J, Maciążek-Jurczyk M. Influence of Piracetam on Gliclazide-Glycated Human Serum Albumin Interaction. A Spectrofluorometric Study. Molecules 2018; 24:molecules24010111. [PMID: 30597970 PMCID: PMC6337564 DOI: 10.3390/molecules24010111] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 12/18/2018] [Accepted: 12/25/2018] [Indexed: 12/24/2022] Open
Abstract
Advanced Glycation End-Products (AGEs) are created in the last step of protein glycation and can be a factor in aging and in the development or worsening of many degenerative diseases (diabetes, chronic kidney disease, atherosclerosis, Alzheimer’s disease, etc.). Albumin is the most susceptible to glycation plasma protein. Modified albumin by AGEs may be more resistant to enzymatic degradation, which further increases the local accumulation of AGEs in tissues. The aim of the present study was to analyze in vitro glycation of serum albumin in the presence of piracetam (PIR) and the gliclazide (GLZ)-glycated albumin interaction. The analysis of PIR as an inhibitor and GLZ interaction with nonglycated human albumin (HSA) and glycated by fructose human albumin (gHSAFRC), in the absence and presence of piracetam (gHSAFRC-PIR), was performed by fluorescence quenching of macromolecules. On the basis of obtained data we concluded that under the influence of glycation, association constant (Ka) of gliclazide to human serum albumin decreases and GLZ binds to HSA with less strength than under physiological conditions. PIR strongly inhibited the formation of AGEs in the system where the efficiency of HSA glycation was the largest. The analysis of piracetam influence on the GLZ-glycated albumin interaction has shown that piracetam increases the binding strength of GLZ to glycated albumin and weakens its therapeutic effect. Based on the obtained data we concluded that monitoring therapy and precautions are required in the treatment when the combinations of gliclazide and piracetam are used at the same time.
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Affiliation(s)
- Agnieszka Szkudlarek
- Department of Physical Pharmacy, Medical University; School of Pharmacy with the Division of Laboratory Medicine, 4, 41-200 Sosnowiec, Poland.
| | - Jadwiga Pożycka
- Department of Physical Pharmacy, Medical University; School of Pharmacy with the Division of Laboratory Medicine, 4, 41-200 Sosnowiec, Poland.
| | - Małgorzata Maciążek-Jurczyk
- Department of Physical Pharmacy, Medical University; School of Pharmacy with the Division of Laboratory Medicine, 4, 41-200 Sosnowiec, Poland.
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27
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Siotto M, Squitti R. Copper imbalance in Alzheimer’s disease: Overview of the exchangeable copper component in plasma and the intriguing role albumin plays. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.05.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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28
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Adamczyk Z, Nattich-Rak M, Dąbkowska M, Kujda-Kruk M. Albumin adsorption at solid substrates: A quest for a unified approach. J Colloid Interface Sci 2018; 514:769-790. [DOI: 10.1016/j.jcis.2017.11.083] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 11/27/2017] [Accepted: 11/29/2017] [Indexed: 12/20/2022]
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29
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Szkudlarek A, Pentak D, Ploch A, Pożycka J, Maciążek-Jurczyk M. In Vitro Investigation of the Interaction of Tolbutamide and Losartan with Human Serum Albumin in Hyperglycemia States. Molecules 2017; 22:molecules22122249. [PMID: 29258218 PMCID: PMC6149683 DOI: 10.3390/molecules22122249] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 12/09/2017] [Accepted: 12/15/2017] [Indexed: 01/08/2023] Open
Abstract
Serum albumin is exposed to numerous structural modifications which affect its stability and activity. Glycation is one of the processes leading to the loss of the original properties of the albumin and physiological function disorder. In terms of long lasting states of the hyperglycemia, Advanced Glycation End-products (AGEs) are formed. AGEs are responsible for cellular and tissue structure damage that cause the appearance of a number of health consequences and premature aging. The aim of the present study was to analyze the conformational changes of serum albumin by glycation—“fructation”—using multiple spectroscopic techniques, such as absorption (UV-Vis), fluorescence (SFM), circular dichroism (CD) and nuclear magnetic resonance (NMR) spectroscopy and evaluate of possible alteration of binding and competition between tolbutamide (TB, a first-generation sulfonylurea oral hypoglycemic drug) and losartan (LOS, an angiotensin II receptor (AT1) blocker used in hypertension (1st line with a coexisting diabetes)) in binding to non-glycated (HSA) and glycated (gHSAFRC) human serum albumin in high-affinity binding sites. The studies allowed us to indicate the structural alterations of human serum albumin as a result of fructose glycation. Changes in binding parameters, such as association (Ka) or Stern-Volmer (KSV) constants suggest that glycation increases the affinity of TB and LOS towards albumin and affects interactions between them. The process of albumin glycation influences the pharmacokinetics of drugs, thus monitored pharmacotherapy is reasonable in the case of diabetes and hypertension polypharmacy. This information may lead to the development of more effective drug treatments based on personalized medicine for patients with diabetes. Our studies suggest the validity of monitored polypharmacy of diabetes and coexisting diseases.
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Affiliation(s)
- Agnieszka Szkudlarek
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Chair and Department of Physical Pharmacy, Jagiellońska 4, Medical University of Silesia, 41-200 Sosnowiec, Poland.
| | - Danuta Pentak
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Chair and Department of Physical Pharmacy, Jagiellońska 4, Medical University of Silesia, 41-200 Sosnowiec, Poland.
| | - Anna Ploch
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Chair and Department of Physical Pharmacy, Jagiellońska 4, Medical University of Silesia, 41-200 Sosnowiec, Poland.
| | - Jadwiga Pożycka
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Chair and Department of Physical Pharmacy, Jagiellońska 4, Medical University of Silesia, 41-200 Sosnowiec, Poland.
| | - Małgorzata Maciążek-Jurczyk
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Chair and Department of Physical Pharmacy, Jagiellońska 4, Medical University of Silesia, 41-200 Sosnowiec, Poland
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Janssen ST, Janssen OE. Directional thyroid hormone distribution via the blood stream to target sites. Mol Cell Endocrinol 2017; 458:16-21. [PMID: 28257828 DOI: 10.1016/j.mce.2017.02.037] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 02/23/2017] [Accepted: 02/23/2017] [Indexed: 12/19/2022]
Abstract
Thyroid hormones are bound to three major serum transport proteins, thyroxin-binding globulin (TBG), transthyretin (TTR) and human serum albumin (HSA). TBG has the strongest affinity for thyroid hormones, TTR is also found in the cerebrospinal fluid and HSA is the most abundant protein in plasma. Combination defects of either a high affinity TTR or HSA variant do not compensate TBG deficiency, underscoring the dominant role of TBG among the thyroid hormone transport proteins. On the other hand, coexistence of raised affinity TTR and HSA variants causes an augmented hyperthyroxinemia. Variations in thyroid hormone transport proteins may alter thyroid function tests to mimic hypo- or hyperthyroidism. As affected individuals are clinically euthyroid and do not require treatment, identification of thyroid hormone transport protein defects is important to avoid unnecessary diagnostic and therapeutic interventions. Mammals share the multilayered system of thyroid hormone binding proteins with humans. Some of them, especially carnivores, do not express TBG. In dogs, this defect has been shown to be caused by a defective hepatocyte nuclear factor-1 binding site in the TBG promoter, preventing TBG synthesis in the liver. The major endogenous thyroid hormone metabolite 3-iodothyronamine (3-T1AM) exerts marked cryogenic, metabolic, cardiac and central nervous system actions. It is bound to apolipoproteinB-100 (ApoB100), possibly facilitating its cellular uptake via interaction with the low density lipoprotein-receptor. This review summarizes the handling of hydrophobic charged thyroid hormone signaling molecules and their metabolite 3-T1AM in aqueous body fluids and the advantages and limits of their serum distributor proteins.
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Affiliation(s)
- Susanne T Janssen
- Institute of Laboratory Medicine, AescuLabor Hamburg, Hamburg, Germany
| | - Onno E Janssen
- Department of Internal Medicine, Endokrinologikum Hamburg, Hamburg, Germany.
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Chan PC, Chen Y, Randell EW. On the path to evidence-based reporting of serum protein electrophoresis patterns in the absence of a discernible monoclonal protein - A critical review of literature and practice suggestions. Clin Biochem 2017; 51:29-37. [PMID: 28916439 DOI: 10.1016/j.clinbiochem.2017.09.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 09/11/2017] [Accepted: 09/11/2017] [Indexed: 10/18/2022]
Affiliation(s)
- Pak Cheung Chan
- Sunnybrook Health Sciences Center & University of Toronto, Ontario, Canada.
| | - Yu Chen
- Dr. Everett Chalmers Regional Hospital, Horizon Health Network, Fredericton, NB, & Dalhousie University, Halifax, NS, Canada
| | - Edward W Randell
- Laboratory Medicine, Faculty of Medicine, Memorial University St. John's, NL, Canada
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Identification of an albumin-like protein in plasma of Atlantic cod ( Gadus morhua) and its biomarker potential for PAH contamination. Heliyon 2017; 3:e00367. [PMID: 28831454 PMCID: PMC5553345 DOI: 10.1016/j.heliyon.2017.e00367] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 07/19/2017] [Indexed: 11/20/2022] Open
Abstract
Increased research efforts are currently focusing on Atlantic cod (Gadus morhua) and its significance for monitoring the contaminant situation in marine environments. Polycyclic aromatic hydrocarbons (PAHs) are well known toxic and carcinogenic compounds, thus continuous monitoring is required to ensure ecosystem sustainability and human food safety. A sensitive biomarker of PAH exposure in humans is the detection of PAH metabolites bound to albumin in blood. The potential of a similar PAH-albumin biomarker in Atlantic cod was therefore investigated by a desktop bioinformatic study followed by liquid chromatography mass spectrometry/mass spectrometry analysis of plasma from 16 fish. For the first time, an albumin-like protein in plasma of Atlantic cod is described, and the biomarker potential based on PAH-albumin adduct detection is discussed. Due to the detected low abundance of the albumin-like protein, it was found unlikely to be applicable as a new biomarker tool for evaluation of PAH exposure.
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McInerney MP, Short JL, Nicolazzo JA. Neurovascular Alterations in Alzheimer's Disease: Transporter Expression Profiles and CNS Drug Access. AAPS JOURNAL 2017; 19:940-956. [PMID: 28462473 DOI: 10.1208/s12248-017-0077-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 03/15/2017] [Indexed: 01/05/2023]
Abstract
Despite a century of steady and incremental progress toward understanding the underlying biochemical mechanisms, Alzheimer's disease (AD) remains a complicated and enigmatic disease, and greater insight will be necessary before substantive clinical success is realised. Over the last decade in particular, a large body of work has highlighted the cerebral microvasculature as an anatomical region with an increasingly apparent role in the pathogenesis of AD. The causative interplay and temporal cascade that manifest between the brain vasculature and the wider disease progression of AD are not yet fully understood, and further inquiry is required to properly characterise these relationships. The purpose of this review is to highlight the recent advancements in research implicating neurovascular factors in AD, at both the molecular and anatomical levels. We begin with a brief introduction of the biochemical and genetic aspects of AD, before reviewing the essential concepts of the blood-brain barrier (BBB) and the neurovascular unit (NVU). In detail, we then examine the evidence demonstrating involvement of BBB dysfunction in AD pathogenesis, highlighting the importance of neurovascular components in AD. Lastly, we include within this review research that focuses on how altered properties of the BBB in AD impact upon CNS exposure of therapeutic agents and the potential clinical impact that this may have on people with this disease.
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Affiliation(s)
- Mitchell P McInerney
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC, 3052, Australia
| | - Jennifer L Short
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, 3052, VIC, Australia
| | - Joseph A Nicolazzo
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC, 3052, Australia.
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Gili C, Bonsembiante F, Beffagna G, Mazzariol S, Gelain ME. Mutations and polymorphism in bottlenose dolphin (Tursiops truncatus, Montagu 1821) albumin gene: First identification of mutations responsible for inherited bisalbuminemia. Res Vet Sci 2017; 114:12-17. [PMID: 28273558 DOI: 10.1016/j.rvsc.2017.02.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 02/23/2017] [Indexed: 10/20/2022]
Abstract
Hereditary bisalbuminemia is an asymptomatic and heterozygous condition in a range of species characterized by the presence of two serum albumin fractions with different electrophoretic mobility resulting in a bicuspid pattern on serum electrophoresis. Bisalbuminemia has been diagnosed by electrophoresis in two bottlenose dolphin (Tursiops truncatus) families, but causative mutations and the inheritance pattern have not been identified. The aims of this work are: to investigate polymorphisms of the bottlenose dolphin albumin gene and to identify mutations causative of bisalbuminemia; to identify the inheritance pattern in two bottlenose dolphin families. Coding regions of the albumin gene were screened for mutations in 15 bottlenose dolphins kept under human care from two distinct families. Eighteen albumin mutations (three synonymous and 15 non-synonymous) were identified. Two non-synonymous variations co-segregated with bisalbuminemic phenotype: p.Phe146Leu in exon 4 and p.Tyr163His in exon 5. The amino acid change in exon 5 was associated with the secondary and/or tertiary structure variation of the protein and has been reported as causative of bisalbuminemia in humans. Pedigree analysis of the dolphin families showed an autosomal codominant inheritance pattern. In this work, the mutations potentially responsible for bisalbuminemia were identified and confirmed the autosomal codominant trait in bottlenose dolphins.
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Affiliation(s)
- Claudia Gili
- Costa Edutainment spa, Acquario di Genova, Area Porto Antico, Ponte Spinola, 16128 Genova, Italy.
| | - Federico Bonsembiante
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell'Università 16, 35020, Agripolis, Legnaro (PD), Italy.
| | - Giorgia Beffagna
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell'Università 16, 35020, Agripolis, Legnaro (PD), Italy.
| | - Sandro Mazzariol
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell'Università 16, 35020, Agripolis, Legnaro (PD), Italy.
| | - Maria Elena Gelain
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell'Università 16, 35020, Agripolis, Legnaro (PD), Italy.
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El-Aal MAA, Al-Ghobashy MA, Fathalla FAA, El-Saharty YS. Preparation and characterization of pH-responsive polyacrylamide molecularly imprinted polymer: Application to isolation of recombinant and wild type human serum albumin from biological sources. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1046:34-47. [DOI: 10.1016/j.jchromb.2017.01.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 01/13/2017] [Accepted: 01/19/2017] [Indexed: 10/20/2022]
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Christiansen SH, Zhang X, Juul-Madsen K, Hvam ML, Vad BS, Behrens MA, Thygesen IL, Jalilian B, Pedersen JS, Howard KA, Otzen DE, Vorup-Jensen T. The random co-polymer glatiramer acetate rapidly kills primary human leukocytes through sialic-acid-dependent cell membrane damage. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:425-437. [PMID: 28064019 DOI: 10.1016/j.bbamem.2017.01.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 12/12/2016] [Accepted: 01/02/2017] [Indexed: 01/02/2023]
Abstract
The formulation glatiramer acetate (GA) is widely used in therapy of multiple sclerosis. GA consists of random copolymers of four amino acids, in ratios that produce a predominantly positive charge and an amphipathic character. With the extraordinary complexity of the drug, several pharmacological modes-of-action were suggested, but so far none, which rationalizes the cationicity and amphipathicity as part of the mode-of-action. Here, we report that GA rapidly kills primary human T lymphocytes and, less actively, monocytes. LL-37 is a cleavage product of human cathelicidin with important roles in innate immunity. It shares the positive charge and amphipathic character of GA, and, as shown here, also the ability to kill human leukocyte. The cytotoxicity of both compounds depends on sialic acid in the cell membrane. The killing was associated with the generation of CD45+ debris, derived from cell membrane deformation. Nanoparticle tracking analysis confirmed the formation of such debris, even at low GA concentrations. Electric cell-substrate impedance sensing measurements also recorded stable alterations in T lymphocytes following such treatment. LL-37 forms oligomers through weak hydrophobic contacts, which is critical for the lytic properties. In our study, SAXS showed that GA also forms this type of contacts. Taken together, our study offers new insight on the immunomodulatory mode-of-action of positively charged co-polymers. The comparison of LL-37 and GA highlights a consistent requirement of certain oligomeric and chemical properties to support cytotoxic effects of cationic polymers targeting human leukocytes.
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Affiliation(s)
- Stig Hill Christiansen
- Dept. of Biomedicine, Aarhus University, The Bartholin Building (1240), Bartholins Allé 6, DK-8000 Aarhus C, Denmark.
| | - Xianwei Zhang
- Dept. of Biomedicine, Aarhus University, The Bartholin Building (1240), Bartholins Allé 6, DK-8000 Aarhus C, Denmark.
| | - Kristian Juul-Madsen
- Dept. of Biomedicine, Aarhus University, The Bartholin Building (1240), Bartholins Allé 6, DK-8000 Aarhus C, Denmark.
| | - Michael Lykke Hvam
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.
| | - Brian Stougaard Vad
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.
| | - Manja Annette Behrens
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.
| | - Ida Lysgaard Thygesen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark; Dept. of Micro- and Nanotechnology, Technical University of Denmark, Ørsteds Plads, Building 345C, DK-2800 Kgs. Lyngby, Denmark.
| | - Babak Jalilian
- Dept. of Biomedicine, Aarhus University, The Bartholin Building (1240), Bartholins Allé 6, DK-8000 Aarhus C, Denmark.
| | - Jan Skov Pedersen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.
| | - Kenneth A Howard
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark; The Lundbeck Foundation Nanomedicine Center for Individualized Management of Tissue Damage and Regeneration (LUNA), Aarhus University, Denmark.
| | - Daniel E Otzen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.
| | - Thomas Vorup-Jensen
- Dept. of Biomedicine, Aarhus University, The Bartholin Building (1240), Bartholins Allé 6, DK-8000 Aarhus C, Denmark; Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark; The Lundbeck Foundation Nanomedicine Center for Individualized Management of Tissue Damage and Regeneration (LUNA), Aarhus University, Denmark; MEMBRANES Research Center, Aarhus University, Denmark; Center for Neurodegenerative Inflammation Prevention (NEURODIN), Aarhus University, Denmark.
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Greulich T, Nell C, Hohmann D, Grebe M, Janciauskiene S, Koczulla AR, Vogelmeier CF. The prevalence of diagnosed α1-antitrypsin deficiency and its comorbidities: results from a large population-based database. Eur Respir J 2017; 49:13993003.00154-2016. [PMID: 27824593 DOI: 10.1183/13993003.00154-2016] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 08/17/2016] [Indexed: 11/05/2022]
Abstract
α1-Antitrypsin deficiency (AATD) is a genetically determined disorder that is associated with different clinical manifestations. We aimed to assess the prevalence of diagnosed AATD and its comorbidities using a large healthcare database.In this retrospective longitudinal observational study, we analysed data from 4 million insurants. Using International Classification of Diseases revision 10 (ICD-10) codes, we assessed the prevalence, comorbidities and healthcare utilisation of AATD patients (E88.0 repeatedly coded) relative to non-AATD patients with chronic obstructive pulmonary disease (COPD), emphysema or asthma.In our study population, we identified 673 AATD patients (590 aged ≥30 years), corresponding to a prevalence of 23.73 per 100 000 in all age groups and 29.36 per 100 000 in those ≥30 years. Based on the number of AATD cases detected in the sample size (673 out of 2 836 585), we extrapolated that there were 19 162 AATD cases in Germany during the years studied. AATD patients had a higher prevalence of arterial hypertension, chronic kidney disease and diabetes relative to non-AATD asthma or emphysema patients. When compared to non-AATD COPD patients, AATD patients had significantly more consultations and more frequent and longer hospitalisations.Our data strengthen the assumption that AATD is associated with a variety of other diseases. Healthcare utilisation appears to be higher among AATD patients as compared to patients with non-AATD-related obstructive lung diseases.
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Affiliation(s)
- Timm Greulich
- Dept of Medicine, Pulmonary and Critical Care Medicine, University Medical Centre Giessen and Marburg, Philipps-University, Member of the German Centre for Lung Research (DZL), Marburg, Germany
| | - Christoph Nell
- Dept of Medicine, Pulmonary and Critical Care Medicine, University Medical Centre Giessen and Marburg, Philipps-University, Member of the German Centre for Lung Research (DZL), Marburg, Germany
| | | | - Marco Grebe
- Grifols Deutschland GmbH, Frankfurt, Germany
| | - Sabina Janciauskiene
- Dept of Respiratory Medicine, Hannover Medical School, Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Hannover, Germany
| | - Andreas Rembert Koczulla
- Dept of Medicine, Pulmonary and Critical Care Medicine, University Medical Centre Giessen and Marburg, Philipps-University, Member of the German Centre for Lung Research (DZL), Marburg, Germany
| | - Claus Franz Vogelmeier
- Dept of Medicine, Pulmonary and Critical Care Medicine, University Medical Centre Giessen and Marburg, Philipps-University, Member of the German Centre for Lung Research (DZL), Marburg, Germany
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Mortimer GM, Minchin RF. Cryptic epitopes and functional diversity in extracellular proteins. Int J Biochem Cell Biol 2016; 81:112-120. [DOI: 10.1016/j.biocel.2016.10.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 10/24/2016] [Accepted: 10/25/2016] [Indexed: 01/28/2023]
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Gili C, Bonsembiante F, Bonanni R, Giordano A, Ledda S, Beffagna G, Paltrinieri S, Sommer M, Gelain ME. Detection of hereditary bisalbuminemia in bottlenose dolphins (Tursiops truncatus, Montagu 1821): comparison between capillary zone and agarose gel electrophoresis. BMC Vet Res 2016; 12:172. [PMID: 27544582 PMCID: PMC4992212 DOI: 10.1186/s12917-016-0801-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 08/12/2016] [Indexed: 11/10/2022] Open
Abstract
Background Hereditary bisalbuminemia is a relatively rare anomaly characterized by the occurrence of two albumin fractions on serum protein separation by electrophoresis. In human medicine, it is usually revealed by chance, is not been clearly associated with a specific disease and the causative genetic alteration is a point mutation of human serum albumin gene inherited in an autosomal codominant pattern. This type of alteration is well recognizable by capillary zone electrophoresis (CZE), whilst agarose gel electrophoresis (AGE) not always produces a clear separation of albumin fractions. The aims of this study is to report the presence of this abnormality in two separate groups of related bottlenose dolphins and to compare the results obtained with capillary zone and agarose gel electrophoresis. Results Serum samples from 40 bottlenose dolphins kept under human care were analyzed. In 9 samples a double albumin peak was evident in CZE electrophoresis while no double peak was noted in AGE profile. Since only an apparently wider albumin peaks were noted in some AGE electrophoretic profiles, the ratio between base and height (b/h) of the albumin peak was calculated and each point-value recorded in the whole set of data was used to calculate a receiver operating characteristic curve: when the b/h ratio of albumin peak was equal or higher than 0.25, the sensitivity and specificity of AGE to detect bisalbuminemic samples were 87 and 63 %, respectively. The bisalbuminemic dolphins belong to two distinct families: in the first family, all the siblings derived from the same normal sire were bisalbuminemic, whereas in the second family bisalbuminemia was present in a sire and in two out of three siblings. Conclusions We report for the first time the presence of hereditary bisalbuminemia in two groups of related bottlenose dolphins identified by means of CZE and we confirm that AGE could fail in the identification of this alteration.
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Affiliation(s)
- Claudia Gili
- Costa Edutainment spa, Acquario di Genova, Area Porto Antico, Ponte Spinola, 16128, Genoa, Italy
| | - Federico Bonsembiante
- Department of Comparative Biomedicine and Food Science, University of Padua, AGRIPOLIS - Viale dell'Università 16, 35020, Agripolis, Legnaro, PD, Italy
| | - Renzo Bonanni
- Costa Edutainment spa, Acquario di Genova, Area Porto Antico, Ponte Spinola, 16128, Genoa, Italy
| | - Alessia Giordano
- Department of Veterinary Sciences and Public Health, University of Milan, Via Celoria 10, 20133, Milan, Italy
| | - Sabina Ledda
- Costa Edutainment spa, Acquario di Genova, Area Porto Antico, Ponte Spinola, 16128, Genoa, Italy
| | - Giorgia Beffagna
- Department of Comparative Biomedicine and Food Science, University of Padua, AGRIPOLIS - Viale dell'Università 16, 35020, Agripolis, Legnaro, PD, Italy
| | - Saverio Paltrinieri
- Department of Veterinary Sciences and Public Health, University of Milan, Via Celoria 10, 20133, Milan, Italy
| | - Matteo Sommer
- Costa Edutainment spa, Acquario di Genova, Area Porto Antico, Ponte Spinola, 16128, Genoa, Italy
| | - Maria Elena Gelain
- Department of Comparative Biomedicine and Food Science, University of Padua, AGRIPOLIS - Viale dell'Università 16, 35020, Agripolis, Legnaro, PD, Italy.
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Caridi G, Gulec EY, Campagnoli M, Lugani F, Onal H, Kilic D, Galliano M, Minchiotti L. A nucleotide deletion and frame-shift cause analbuminemia in a Turkish family. Biochem Med (Zagreb) 2016; 26:264-71. [PMID: 27346974 PMCID: PMC4910280 DOI: 10.11613/bm.2016.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 04/13/2016] [Indexed: 12/25/2022] Open
Abstract
Congenital analbuminemia is an autosomal recessive disorder, in which albumin, the major blood protein, is present only in a minute amount. The condition is a rare allelic heterogeneous defect, only about seventy cases have been reported worldwide. To date, more than twenty different mutations within the albumin gene have been found to cause the trait. In our continuing study of the molecular genetics of congenital analbuminemia, we report here the clinical and biochemical findings and the mutation analysis of the gene in two Turkish infants. For the molecular analysis, we used our strategy, based on the screening of the gene by single-strand conformation polymorphism, heteroduplex analysis and direct DNA sequencing. The results showed that both patients are homozygous for the deletion of a cytosine residue in exon 5, in a stretch of four cytosines starting from nucleotide position 524 and ending at position 527 (NM_000477.5(ALB):c.527delC). The subsequent frame-shift inserts a stop codon in position 215, markedly reducing the size of the predicted protein product. The parents are both heterozygous for the same mutation, for which we propose the name Erzurum from the city of origin of the family. In conclusion, our results show that in this family congenital analbuminemia is caused by a novel frame-shift/deletion defect, confirm the inheritance of the trait, and contribute to advance our understanding of the molecular basis underlying this condition.
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Affiliation(s)
- Gianluca Caridi
- Laboratory on Pathophysiology of Uremia, Istituto Giannina Gaslini IRCCS, Genova, Italy
| | - Elif Yilmaz Gulec
- Department of Medical Genetics, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey
| | | | - Francesca Lugani
- Laboratory on Pathophysiology of Uremia, Istituto Giannina Gaslini IRCCS, Genova, Italy
| | - Hasan Onal
- Department of Pediatric Metabolism and Nutrition, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey
| | - Duzgun Kilic
- Department of Biochemistry, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey
| | - Monica Galliano
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
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Abstract
Human serum albumin (HSA) is the predominant product of hepatic protein synthesis and one of the more abundant plasma proteins. HSA is a monomeric multidomain macromolecule, representing the main determinant of plasma oncotic pressure and the main modulator of fluid distribution between body compartments. HSA displays an essential role in maintaining the integrity of the vascular barrier. HSA is the most important antioxidant capacity of human plasma, in addition to its ability to protect the body from the harmful effects of heavy metals such as iron and copper and reduce their ability to produce reactive oxygen radicals. HSA is the main depot for nitric oxide (NO) transport in the blood. HSA represents the main carrier for fatty acids, affects pharmacokinetics of many drugs, and provides the metabolic modification of some drugs and displays pseudo-enzymatic properties. HSA has been widely used successfully for more than 50 years in many settings of perioperative medicine including hypovolemia, shock, burns, surgical blood loss, sepsis, and acute respiratory distress syndrome (ARDS). Recently, the use of HSA has shown a promising neuroprotective effect in patients with subarachnoid hemorrhage. The most recent evidence-based functions and uses of HSA in the perioperative period are reviewed in this chapter.
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Affiliation(s)
- Ehab Farag
- grid.254293.b0000000404350569Cleveland Clinic Lerner College of Medicine Director of Clinical Research Staff Anesthesiologist General Anesthesia and Outcomes Research Cleveland Clinic, Cleveland, Ohio USA
| | - Andrea Kurz
- grid.254293.b0000000404350569Cleveland Clinic Lerner College of Medicine Chairman of General Anesthesia Cleveland Clinic, Cleveland, Ohio USA
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Lühmann T, Meinel L. Nanotransporters for drug delivery. Curr Opin Biotechnol 2016; 39:35-40. [DOI: 10.1016/j.copbio.2015.12.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 12/19/2015] [Indexed: 01/02/2023]
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Facchin F, Catalani S, Bianconi E, Pasquale DD, Stea S, Toni A, Canaider S, Beraudi A. Albumin as marker for susceptibility to metal ions in metal-on-metal hip prosthesis patients. Hum Exp Toxicol 2016; 36:319-327. [DOI: 10.1177/0960327116650011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Metal-on-metal (MoM) hip prostheses are known to release chromium and cobalt (Co), which negatively affect the health status, leading to prosthesis explant. Albumin (ALB) is the main serum protein-binding divalent transition metals. Its binding capacity can be affected by gene mutations or modification of the protein N-terminal region, giving the ischaemia-modified albumin (IMA). This study evaluated ALB, at gene and protein level, as marker of individual susceptibility to Co in MoM patients, to understand whether it could be responsible for the different management of this ion. Co was measured in whole blood, serum and urine of 40 MoM patients. A mutational screening of ALB was performed to detect links between mutations and metal binding. Finally, serum concentration of total ALB and IMA were measured. Serum total ALB concentration was in the normal range for all patients. None of the subjects presented mutations in the investigated gene. Whole blood, serum and urine Co did not correlate with serum total ALB or IMA, although IMA was above the normal limit in most subjects. The individual susceptibility is very important for patients’ health status. Despite the limited results of this study, we provide indications on possible future investigations on the toxicological response to Co.
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Affiliation(s)
- F Facchin
- Department of Experimental, Diagnostic and Specialty Medicine, Unit of Histology, Embryology and Applied Biology, University of Bologna, Bologna, Italy
- National Institute of Biostructures and Biosystems, Rome, Italy
| | - S Catalani
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, Unit of Occupational Health and Industrial Hygiene, University of Brescia, Brescia, Italy
| | - E Bianconi
- Department of Experimental, Diagnostic and Specialty Medicine, Unit of Histology, Embryology and Applied Biology, University of Bologna, Bologna, Italy
- National Institute of Biostructures and Biosystems, Rome, Italy
| | | | - S Stea
- Medical Technology Laboratory, Bologna, Italy
| | - A Toni
- Medical Technology Laboratory, Bologna, Italy
- Orthopaedic Traumatology and Prosthetic Surgery and Revisions of Hip and Knee Implants, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - S Canaider
- Department of Experimental, Diagnostic and Specialty Medicine, Unit of Histology, Embryology and Applied Biology, University of Bologna, Bologna, Italy
- National Institute of Biostructures and Biosystems, Rome, Italy
| | - A Beraudi
- Medical Technology Laboratory, Bologna, Italy
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Brennan SO, Potter HC, Sheen CR, George PM. Unique albumin with two silent substitutions (540Thr→Ala and 546Ala→Ser): Insights into how albumin is recycled. Clin Chim Acta 2016; 457:125-9. [PMID: 27087420 DOI: 10.1016/j.cca.2016.04.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 04/06/2016] [Accepted: 04/13/2016] [Indexed: 10/22/2022]
Abstract
OBJECTIVES To determine the cause of an albumin abnormality detected by chance on electrospray time-of-flight mass spectrometry (TOF MS) of whole plasma, and to assess its physiological consequences. METHOD Plasma was examined by TOF MS and tryptic mapping was used to locate mutation sites and determine the relative expression level of the variant and normal albumins. DNA sequencing was used to precisely define mutations. RESULTS Whole protein electrospray TOF MS indicated a decrease of 14Da in the mass of albumin. Peptide mass mapping and DNA sequencing established the presence of two novel heterozygous point mutations (540Thr→Ala and 546Ala→Ser) whose combined mass changes (-30 and +16Da) indicated both mutations occurred on the same allele. Peptide ratios showed the variant albumin was present at a lower level than normal with an expression ratio of approximately 1:2 (variant:normal). Phylogenetic sequence alignments show Thr540 is highly conserved while Ala546 has wide species variation, suggesting 540Thr→Ala might compromise the protein. CONCLUSION Both mutations occur close together in domain IIIB, a region involved in albumin scavenging and recycling. In particular, Thr540 is close to His535, a residue directly involved in pH-dependent binding and release of albumin from its recycling neonatal Fc receptor. Compromised receptor binding would explain the low albumin (34g/l) concentration and the diminished variant expression level.
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Affiliation(s)
- Stephen O Brennan
- Canterbury Health Laboratories, Christchurch, New Zealand; Molecular Pathology, University of Otago, Christchurch School of Medicine, Christchurch, New Zealand.
| | | | - Campbell R Sheen
- Protein Science and Engineering, Callaghan Innovation, Christchurch, New Zealand
| | - Peter M George
- Canterbury Health Laboratories, Christchurch, New Zealand; Molecular Pathology, University of Otago, Christchurch School of Medicine, Christchurch, New Zealand
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Mutants and molecular dockings reveal that the primary L-thyroxine binding site in human serum albumin is not the one which can cause familial dysalbuminemic hyperthyroxinemia. Biochim Biophys Acta Gen Subj 2016; 1860:648-60. [DOI: 10.1016/j.bbagen.2016.01.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 12/10/2015] [Accepted: 01/06/2016] [Indexed: 12/20/2022]
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Valerio C, Theocharidou E, Davenport A, Agarwal B. Human albumin solution for patients with cirrhosis and acute on chronic liver failure: Beyond simple volume expansion. World J Hepatol 2016; 8:345-354. [PMID: 26981172 PMCID: PMC4779163 DOI: 10.4254/wjh.v8.i7.345] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 12/22/2015] [Accepted: 02/16/2016] [Indexed: 02/06/2023] Open
Abstract
To provide an overview of the properties of human serum albumin (HSA), and to review the evidence for the use of human albumin solution (HAS) in critical illness, sepsis and cirrhosis. A MEDLINE search was performed using the terms “human albumin”, “critical illness”, “sepsis” and “cirrhosis”. The references of retrieved articles were reviewed manually. Studies published between 1980 and 2014 were selected based on quality criteria. Data extraction was performed by all authors. HSA is the main plasma protein contributing greatly to its oncotic pressure. HSA demonstrates important binding properties for endogenous and exogenous toxins, drugs and drug metabolites that account for its anti-oxidant and anti-inflammatory properties. In disease states, hypoalbuminaemia is secondary to decreased HSA production, increased loss or transcapillary leakage into the interstitial space. HSA function can be also altered in disease with reduced albumin binding capacity and increased production of modified isoforms. HAS has been used as volume expander in critical illness, but received criticism due to cost and concerns regarding safety. More recent studies confirmed the safety of HAS, but failed to show any survival benefit compared to the cheaper crystalloid fluids, therefore limiting its use. On the contrary, in cirrhosis there is robust data to support the efficacy of HAS for the prevention of circulatory dysfunction post-large volume paracentesis and in the context of spontaneous bacterial peritonitis, and for the treatment of hepato-renal syndrome and hypervolaemic hyponatraemia. It is likely that not only the oncotic properties of HAS are beneficial in cirrhosis, but also its functional properties, as HAS replaces the dysfunctional HSA. The role of HAS as the resuscitation fluid of choice in critically ill patients with cirrhosis, beyond the established indications for HAS use, should be addressed in future studies.
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Ali M, Kumar A, Kumar M, Pandey BN. The interaction of human serum albumin with selected lanthanide and actinide ions: Binding affinities, protein unfolding and conformational changes. Biochimie 2016; 123:117-29. [PMID: 26821345 DOI: 10.1016/j.biochi.2016.01.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 01/22/2016] [Indexed: 10/22/2022]
Abstract
Human serum albumin (HSA), the most abundant soluble protein in blood plays critical roles in transportation of biomolecules and maintenance of osmotic pressure. In view of increasing applications of lanthanides- and actinides-based materials in nuclear energy, space, industries and medical applications, the risk of exposure with these metal ions is a growing concern for human health. In present study, binding interaction of actinides/lanthanides [thorium: Th(IV), uranium: U(VI), lanthanum: La(III), cerium: Ce(III) and (IV)] with HSA and its structural consequences have been investigated. Ultraviolet-visible, Fourier transform-infrared, Raman, Fluorescence and Circular dichroism spectroscopic techniques were applied to study the site of metal ions interaction, binding affinity determination and the effect of metal ions on protein unfolding and HSA conformation. Results showed that these metal ions interacted with carbonyl (CO..:)/amide(N..-H) groups and induced exposure of aromatic residues of HSA. The fluorescence analysis indicated that the actinide binding altered the microenvironment around Trp214 in the subdomain IIA. Binding affinity of U(VI) to HSA was slightly higher than that of Th(IV). Actinides and Ce(IV) altered the secondary conformation of HSA with a significant decrease of α-helix and an increase of β-sheet, turn and random coil structures, indicating a partial unfolding of HSA. A correlation was observed between metal ion's ability to alter HSA conformation and protein unfolding. Both cationic effects and coordination ability of metal ions seemed to determine the consequences of their interaction with HSA. Present study improves our understanding about the protein interaction of these heavy ions and their impact on its secondary structure. In addition, binding characteristics may have important implications for the development of rational antidote for the medical management of health effects of actinides and lanthanides.
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Affiliation(s)
- Manjoor Ali
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai 85, India
| | - Amit Kumar
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai 85, India.
| | - Mukesh Kumar
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 85, India
| | - Badri N Pandey
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai 85, India
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Brennan SO, Potter HC, Hanss M. Bisalbuminaemia due to novel mutation at a critical residue involved in recycling; Albumin Lyon (510His→Arg). Clin Biochem 2016; 49:544-7. [PMID: 26774326 DOI: 10.1016/j.clinbiochem.2016.01.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 01/11/2016] [Accepted: 01/12/2016] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To define the underlying cause of bisalbuminaemia in an individual presenting with spontaneous venous thrombosis. METHOD Plasma was examined by electrospray time-of-flight mass spectrometry (TOF MS) to assess albumin mutations and to quantify variant expression level. Tryptic peptide mapping and DNA sequencing were used to precisely define the mutation. RESULTS Whole protein MS indicated a 19Da increase in the mass of 50% of the albumin molecules suggesting a His→Arg substitution. A novel heterozygous 510His→Arg mutation was identified by peptide mass mapping and confirmed by DNA sequencing of exon 12 of the albumin gene. CONCLUSION The nature and location of the mutation suggest it would have no direct influence on haemostasis through altered warfarin binding or increased fibrinogen attachment and it appears to be incidental to the thrombotic phenotype. However the highly conserved His510 residue is recognised as being of critical importance in albumin recycling through interaction with its savaging neonatal Fc receptor. The normal albumin level of 41.1g/l and the coequal expression of albumin Lyon demonstrate that the conservative 510His→Arg substitution does not interfere with the pH dependant capture and release of albumin by the receptor.
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Affiliation(s)
- Stephen O Brennan
- Canterbury Health Laboratories, Christchurch, New Zealand; University of Otago, Christchurch School of Medicine, Christchurch, New Zealand.
| | | | - Michel Hanss
- Laboratoire d'hématologie, GHE, Hospices Civils de Lyon, France
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Abstract
Thyroid hormones (TH) are bound to three major serum transport proteins, thyroxine-binding globulin (TBG), transthyretin (TTR) and human serum albumin (HSA). TBG has the strongest affinity for TH, whereas HSA is the most abundant protein in plasma. Individuals harboring genetic variations in TH transport proteins present with altered thyroid function tests, but are clinically euthyroid and do not require treatment. Clinical awareness and early recognition of these conditions are important to prevent unnecessary therapy with possible untoward effects. This review summarizes the gene, molecular structure and properties of these TH transport proteins and provides an overview of their inherited abnormalities, clinical presentation, genetic background and pathophysiologic mechanisms.
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Affiliation(s)
- Theodora Pappa
- The University of Chicago, MC3090, 5841 South Maryland Avenue, Chicago, IL 60637, USA.
| | | | - Samuel Refetoff
- The University of Chicago, MC3090, 5841 South Maryland Avenue, Chicago, IL 60637, USA.
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Vavrova L, Rychlikova J, Mrackova M, Novakova O, Zak A, Novak F. Increased inflammatory markers with altered antioxidant status persist after clinical recovery from severe sepsis: a correlation with low HDL cholesterol and albumin. Clin Exp Med 2015; 16:557-569. [DOI: 10.1007/s10238-015-0390-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 09/09/2015] [Indexed: 12/31/2022]
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