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Capolupo A, Petrocchi S, Melchiorre M, Jonas K, D’Hooghe T, Hanyaloglu A, Sunkara S, Palmese A, Ozgumus B, Amoresano A, Angiuoni G, Montenegro S, Simone P, Lispi M. Analytical Investigation of the Profile of Human Chorionic Gonadotropin in Highly Purified Human Menopausal Gonadotrophin Preparations. Int J Mol Sci 2024; 25:9405. [PMID: 39273352 PMCID: PMC11395176 DOI: 10.3390/ijms25179405] [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: 07/03/2024] [Revised: 08/12/2024] [Accepted: 08/16/2024] [Indexed: 09/15/2024] Open
Abstract
Highly purified human menopausal gonadotropin (HP-hMG [Menopur®, Ferring Pharmaceuticals, Saint-Prex, Switzerland]) contains a 1:1 ratio of follicle-stimulating hormone (FSH) and luteinizing hormone (LH). This analysis aimed to assess gonadotropin (FSH, LH and hCG) abundance in HP-hMG and clarify the source of hCG by assessing the presence of sulfated glycans, which are diagnostic for pituitary hCG forms due to their distinct glycosylation patterns. Additionally, the purity of each sample, their specific components, and their oxidation levels were assessed. HP-hMG samples (three of Menopur® and two of Menogon® Ferring Pharmaceuticals, Saint-Prex, Switzerland) were included in the current analyses. Brevactid® (urinary hCG; Ferring Pharmaceuticals, Saint-Prex, Switzerland) and Ovidrel® (recombinant hCG; Merck KGaA, Darmstadt, Germany) were used as control samples. Glycopeptide mapping and analysis of impurities were carried out by liquid chromatography-tandem mass spectrometry (LC-MS/MS). Oxidation was assessed through reducing peptide mapping using LC-MS/MS. The FSH and LH in the HP-hMG samples showed sulfated glycans, while no signals of sulfated glycopeptides were detected on any site of the beta subunit of hCG. HP-hMG test samples presented the same hCG glycan distribution as the control sample (placental hCG, Brevactid®) extracted from the urine of pregnant women, suggesting a non-pituitary source of hCG. Protein impurities were estimated to constitute approximately 20-30% of the entire HP-hMG protein content in the test samples. More than 200 non-gonadotropin proteins were identified in the HP-hMG test samples, of which several were involved in embryonic development or pregnancy. The alpha subunit of the tested samples was strongly oxidized, with a relative abundance of 20% of the total gonadotropin content. Without taking into account all the protein impurities, the beta subunit of LH was detected only in traces (0.9-1.2%) in all tested HP-HMG samples, confirming the data obtained by intact molecule analysis, while high levels of beta hCG (18-47%) were observed. Advanced molecular analysis of HP-hMG indicates a primarily placental origin of hCG, as evidenced by the absence of hCG sulfated glycans and the predominance of placental non-sulfated hCG in LH activity. The analysis revealed 20-30% of protein impurities and a significant presence of oxidized forms in the HP-hMG samples. These findings are critical for understanding the quality, safety, and clinical profile of HP-hMG.
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Affiliation(s)
- Angela Capolupo
- Characterization & Innovative Analytics Unit—Analytical Development Biotech—Global Analytical Development—Global Development & Launch—Global Healthcare Operation, Merck Serono S.p.A., 00012 Guidonia, Italy, an affiliate of Merck KGaA, Darmstadt, Germany; (A.C.); (S.P.); (M.M.); (G.A.); (P.S.)
| | - Sofia Petrocchi
- Characterization & Innovative Analytics Unit—Analytical Development Biotech—Global Analytical Development—Global Development & Launch—Global Healthcare Operation, Merck Serono S.p.A., 00012 Guidonia, Italy, an affiliate of Merck KGaA, Darmstadt, Germany; (A.C.); (S.P.); (M.M.); (G.A.); (P.S.)
| | - Maura Melchiorre
- Characterization & Innovative Analytics Unit—Analytical Development Biotech—Global Analytical Development—Global Development & Launch—Global Healthcare Operation, Merck Serono S.p.A., 00012 Guidonia, Italy, an affiliate of Merck KGaA, Darmstadt, Germany; (A.C.); (S.P.); (M.M.); (G.A.); (P.S.)
| | - Kim Jonas
- Department of Women and Children’s Health, School of Life Course and Population Health Sciences, King’s College London, London WC2R 2LS, UK
| | - Thomas D’Hooghe
- Global Medical Affairs—Fertility, Merck KGaA, 64293 Darmstadt, Germany (S.M.)
- Department of Development and Regeneration, Laboratory of Endometrium, Endometriosis & Reproductive Medicine, KU Leuven, 3000 Leuven, Belgium
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University Medical School, New Haven, CT 06520-8065, USA
| | - Aylin Hanyaloglu
- Department of Metabolism, Digestion and Reproduction, Imperial College, London SW7 2AZ, UK;
| | - Sesh Sunkara
- Department of Women and Children’s Health, School of Life Course and Population Health Sciences, King’s College London, London WC2R 2LS, UK
| | - Angelo Palmese
- Characterization & Innovative Analytics Unit—Analytical Development Biotech—Global Analytical Development—Global Development & Launch—Global Healthcare Operation, Merck Serono S.p.A., 00012 Guidonia, Italy, an affiliate of Merck KGaA, Darmstadt, Germany; (A.C.); (S.P.); (M.M.); (G.A.); (P.S.)
| | - Beste Ozgumus
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, 80126 Naples, Italy; (B.O.); (A.A.)
| | - Angela Amoresano
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, 80126 Naples, Italy; (B.O.); (A.A.)
| | - Gabriella Angiuoni
- Characterization & Innovative Analytics Unit—Analytical Development Biotech—Global Analytical Development—Global Development & Launch—Global Healthcare Operation, Merck Serono S.p.A., 00012 Guidonia, Italy, an affiliate of Merck KGaA, Darmstadt, Germany; (A.C.); (S.P.); (M.M.); (G.A.); (P.S.)
| | - Susana Montenegro
- Global Medical Affairs—Fertility, Merck KGaA, 64293 Darmstadt, Germany (S.M.)
| | - Patrizia Simone
- Characterization & Innovative Analytics Unit—Analytical Development Biotech—Global Analytical Development—Global Development & Launch—Global Healthcare Operation, Merck Serono S.p.A., 00012 Guidonia, Italy, an affiliate of Merck KGaA, Darmstadt, Germany; (A.C.); (S.P.); (M.M.); (G.A.); (P.S.)
| | - Monica Lispi
- Global Medical Affairs—Fertility, Merck KGaA, 64293 Darmstadt, Germany (S.M.)
- Unit of Endocrinology, International PhD School in Clinical and Experimental Medicine, University of Modena and Reggio Emilia, 41121 Modena, Italy
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Rodríguez MC, Villarraza J, Tardivo MB, Antuña S, Fontana D, Ceaglio N, Prieto C. Optimization and Validation of a Liquid Formulation for a New Recombinant Veterinary Product using QbD Approach. J Pharm Sci 2023; 112:2756-2765. [PMID: 37422284 DOI: 10.1016/j.xphs.2023.07.004] [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: 03/29/2023] [Revised: 07/03/2023] [Accepted: 07/03/2023] [Indexed: 07/10/2023]
Abstract
Protein formulation and drug characterization are one of the most difficult and time-consuming tasks because of the complexity of biotherapeutic proteins. Hence, maintaining a protein drug in its active state typically requires preventing changes in its physical and chemical properties. Quality by Design (QbD) is a systematic approach emphasizing product and process understanding. Design of Experiments (DoE) is one of the most important QbD tools, allowing the possibility to modify the formulation attributes within a defined design space. Here, we report the validation of a RP-HPLC assay for recombinant equine chorionic gonadotropin (reCG) that demonstrated a high correlation with the in vivo potency biological assay. QbD concepts were then applied to obtain an optimized liquid formulation of reCG with a predefined quality product profile. The developed strategy demonstrates the importance of applying multivariable strategies as DoE to simplify formulation stages, improving the quality of the obtained results. Moreover, it is important to highlight that this is the first time that a liquid formulation is reported for an eCG molecule, since, up to now, the only eCG products available in the market for veterinary use consisted in partially purified preparations of pregnant mare serum gonadotropin (PMSG) presented as a lyophilized product.
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Affiliation(s)
- María Celeste Rodríguez
- UNL, CONICET, FBCB (School of Biochemistry and Biological Sciences), CBL (Biotechnological Center of Litoral), Cell Culture Laboratory, Ciudad Universitaria, Ruta Nacional 168 - Km 472.4 - C.C. 242 - (S3000ZAA) Santa Fe, Argentina.
| | - Javier Villarraza
- UNL, CONICET, FBCB (School of Biochemistry and Biological Sciences), CBL (Biotechnological Center of Litoral), Cell Culture Laboratory, Ciudad Universitaria, Ruta Nacional 168 - Km 472.4 - C.C. 242 - (S3000ZAA) Santa Fe, Argentina
| | - María Belén Tardivo
- Biotecnofe S.A. Parque Tecnológico Litoral Centro (PTLC), Ruta 168 Pje El Pozo, 3000, Santa Fe, Argentina
| | - Sebastián Antuña
- Biotecnofe S.A. Parque Tecnológico Litoral Centro (PTLC), Ruta 168 Pje El Pozo, 3000, Santa Fe, Argentina
| | - Diego Fontana
- UNL, FBCB (School of Biochemistry and Biological Sciences), CBL (Biotechnological Center of Litoral), Biotechnological Development Laboratory, Ciudad Universitaria, Ruta Nacional 168 - Km 472.4 - C.C. 242 - (S3000ZAA) Santa Fe, Argentina; Biotecnofe S.A. Parque Tecnológico Litoral Centro (PTLC), Ruta 168 Pje El Pozo, 3000, Santa Fe, Argentina
| | - Natalia Ceaglio
- UNL, CONICET, FBCB (School of Biochemistry and Biological Sciences), CBL (Biotechnological Center of Litoral), Cell Culture Laboratory, Ciudad Universitaria, Ruta Nacional 168 - Km 472.4 - C.C. 242 - (S3000ZAA) Santa Fe, Argentina
| | - Claudio Prieto
- UNL, FBCB (School of Biochemistry and Biological Sciences), CBL (Biotechnological Center of Litoral), Biotechnological Development Laboratory, Ciudad Universitaria, Ruta Nacional 168 - Km 472.4 - C.C. 242 - (S3000ZAA) Santa Fe, Argentina; Biotecnofe S.A. Parque Tecnológico Litoral Centro (PTLC), Ruta 168 Pje El Pozo, 3000, Santa Fe, Argentina
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Physicochemical Characterization of a Recombinant eCG and Comparative Studies with PMSG Commercial Preparations. Protein J 2023; 42:24-36. [PMID: 36652139 DOI: 10.1007/s10930-023-10092-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/11/2023] [Indexed: 01/19/2023]
Abstract
Equine chorionic gonadotropin (eCG) is a glycoprotein hormone widely used in timed artificial ovulation (TAI) and superovulation protocols to improve the reproductive performance in livestock. Until recently, the only eCG products available in the market for veterinary use consisted in partially purified preparations of pregnant mare serum gonadotropin (PMSG). Here, a bioactive recombinant eCG (reCG) produced in suspension CHO-K1 cells was purified employing different chromatographic methods (hydrophobic interaction chromatography and reverse-phase (RP)-HPLC) and compared with a RP-HPLC-purified PMSG. To gain insight into the structural and functional characteristics of reCG, a bioinformatics analysis was performed. An exhaustive characterization comprising the determination of the purity degree, aggregates and nicked forms through SDS-PAGE, RP-HPLC and SEC-HPLC was performed. Higher order structures were studied by fluorescence spectroscopy and SEC-HPLC. Isoforms profile were analyzed by isoelectric focusing. Glycosylation analysis was performed through pulsed amperometric detection and PNGase F treatment following SDS-PAGE and weak anion exchange-HPLC. Slight differences between the purified recombinant hormones were found. However, recombinant molecules and PMSG exhibited variations in the glycosylation pattern. In fact, differences in sialic acid content between two commercial preparations of PMSG were also obtained, which could lead to differences in their biological potency. These results show the importance of having a standardized production process, as occurs in a recombinant protein bioprocess. Besides, our results reflect the importance of the glycan moieties on eCG conformation and hence in its biological activity, preventing denaturing processes such as aggregation.
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Rashid F, Baghla R, Kale P, Shah M, Malakar D, Pillai M. Absolute Quantification of Follicle Stimulating Hormone (FSH) Using Its Signature Peptides and Enzymatic Digestion in Human Serum by UPLC/LC–MS/MS. Chromatographia 2021. [DOI: 10.1007/s10337-021-04057-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Uhuo E, Nwuke C, Oriaku C, Chilaka J. Biochemical and hormonal parameters analysis of metoclopramide-induced hyperprolactinemic female wistar rats administered leaf extract of Kigelia africana. CLINICAL NUTRITION OPEN SCIENCE 2021. [DOI: 10.1016/j.nutos.2021.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Al Matari A, Goumenou A, Combès A, Fournier T, Pichon V, Delaunay N. Identification and semi-relative quantification of intact glycoforms of human chorionic gonadotropin alpha and beta subunits by nano liquid chromatography-Orbitrap mass spectrometry. J Chromatogr A 2021; 1640:461945. [PMID: 33556683 DOI: 10.1016/j.chroma.2021.461945] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 01/11/2021] [Accepted: 01/25/2021] [Indexed: 12/27/2022]
Abstract
The human chorionic gonadotropin (hCG) protein belongs to a family of glycoprotein hormones called gonadotropins. It is a heterodimer made of two non-covalently linked subunits. The α-subunit structure, hCGα, has 2 N-glycosylation sites, while the beta subunit, hCGβ, has 2 N- and 4 O-glycosylation sites. This leads to numerous glycoforms. A method based on the analysis of hCG glycoforms at the intact level by nano-reversed phase liquid chromatography coupled to high resolution mass spectrometry (nanoLC-HRMS) with an Orbitrap analyzer was previously developed using a recombinant hCG-based drug, Ovitrelle®, as standard. It allowed the detection of about 30 hCGα glycoforms, but didn't allow the detection of hCGβ glycoforms. This method was thus here significantly modified (addition of a pre-concentration step of the sample to increase the sample volume from 70 nl to 1 µl, optimization of the gradient slope and the nature and content of the acidic additive in the mobile phase). It led to an improvement of the separation of hCGα and hCGβ glycoforms, which allowed for the first time the detection of 33 hCGβ glycoforms at intact level. In addition, a higher number of hCGα glycoforms (42 in total, i.e. a 40% increase) was detected. The figures of merit of this new method were next assessed. The relative standard deviations (RSDs) of the retention time ranged between 0.02 and 0.95% (n = 3), with an average value of 0.36% for the alpha glycoforms and between 0.01 and 1.08% (n = 3) with an average value of 0.23% for the beta glycoforms. The RSDs of the relative peak area measured on the extracted ion chromatogram of each glycoform were below 20% (n = 3), with an average value of 9.8%, thus allowing semi-relative quantification. Therefore, this method has a high potential for rapid quality control aiming for the detection and comparison of glycoforms present in glycoprotein-based pharmaceutical preparations.
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Affiliation(s)
- Amira Al Matari
- Laboratory of Analytical, Bioanalytical Sciences and Miniaturization, Chemistry, Biology and Innovation (CBI) UMR 8231, ESPCI Paris PSL, CNRS, PSL Research University, Paris, France
| | - Anastasia Goumenou
- Laboratory of Analytical, Bioanalytical Sciences and Miniaturization, Chemistry, Biology and Innovation (CBI) UMR 8231, ESPCI Paris PSL, CNRS, PSL Research University, Paris, France
| | - Audrey Combès
- Laboratory of Analytical, Bioanalytical Sciences and Miniaturization, Chemistry, Biology and Innovation (CBI) UMR 8231, ESPCI Paris PSL, CNRS, PSL Research University, Paris, France
| | - Thierry Fournier
- Université de Paris, INSERM, UMR-S1139, «Pathophysiology & Pharmacotoxicology of the Human Placenta, pre & postnatal Microbiota», 3PHM, F-75006 Paris, France
| | - Valérie Pichon
- Laboratory of Analytical, Bioanalytical Sciences and Miniaturization, Chemistry, Biology and Innovation (CBI) UMR 8231, ESPCI Paris PSL, CNRS, PSL Research University, Paris, France; Sorbonne Université, France
| | - Nathalie Delaunay
- Laboratory of Analytical, Bioanalytical Sciences and Miniaturization, Chemistry, Biology and Innovation (CBI) UMR 8231, ESPCI Paris PSL, CNRS, PSL Research University, Paris, France.
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Kalecki J, Cieplak M, Dąbrowski M, Lisowski W, Kuhn A, Sharma PS. Hexagonally Packed Macroporous Molecularly Imprinted Polymers for Chemosensing of Follicle-Stimulating Hormone Protein. ACS Sens 2020; 5:118-126. [PMID: 31845570 DOI: 10.1021/acssensors.9b01878] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Homogenous nanostructuration of molecularly imprinted polymer (MIP) films for follicle-stimulating hormone (FSH)-sensing was achieved by using optimized colloidal crystals as a hard mold. Introduction of a heating step after assembling colloidal crystals of silica beads promoted their adhesion. Thus, precise assembling of beads was not disturbed during further multisteps of surface imprinting, and crack-free hexagonal packing was maintained. Scanning electron microscopy imaging confirmed hexagonal packing of silica colloidal crystals as well as homogenous nanostructuration in MIP films. FSH immobilization over silica beads and later its derivatization with electroactive functional monomers was confirmed by X-ray photoelectron spectroscopy analysis. The nanostructured molecular recognition films prepared in this way were combined with an electrochemical transducer in order to design a capacitive impedimetry-based chemosensing system. It was tested for the determination of FSH in the range from 0.1 fM to 100 pM in 10 mM 2-(N-morpholino) ethane sulfonic acid buffer (pH = 4.2). The detection limit of the chemosensor was 0.1 fM, showing a high selectivity with respect to common protein interferences as well as other protein hormones of the gonadotropin family.
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Affiliation(s)
- Jakub Kalecki
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Maciej Cieplak
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Marcin Dąbrowski
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, ENSCBP, 16 Avenue Pey Berland, 33607 Pessac, France
| | - Wojciech Lisowski
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Alexander Kuhn
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, ENSCBP, 16 Avenue Pey Berland, 33607 Pessac, France
| | - Piyush Sindhu Sharma
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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Development of a robust reporter gene-based assay for the bioactivity determination of recombinant human follicle stimulating hormone (rhFSH) pharmaceutical products. J Pharm Biomed Anal 2019; 177:112855. [PMID: 31561061 DOI: 10.1016/j.jpba.2019.112855] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 08/23/2019] [Accepted: 09/02/2019] [Indexed: 01/18/2023]
Abstract
FSH plays a key role in the function of the reproductive system of human beings and is widely used both diagnostically and therapeutically in reproductive medicine. With the growing incidence of infertility, the demand for FSH pharmaceutical products is increasing. For this reason, the quality control process for FSH products is becoming more stringent. An accurate determination of bioactivity is crucial for the safety and efficacy of recombinant human follicle stimulating hormone (rhFSH). Up to now, in-vivo bioassay based on FSH-induced increases in rat ovarian weight has been the only method widely accepted by different pharmacopoeias. However this method has such drawbacks as the complex procedures, long assay period and high variability. Here, we established a reporter gene assay (RGA) based on the CHO-K1-FSHR-CRE-Luc cell line that stably expresses human follicle stimulating hormone receptor (hFSHR), as well as a luciferase reporter under the control of cyclic adenosine monophosphate (cAMP) response elements (CRES). Our study showed that our new assay not only has good dose-dependent responsiveness to rhFSH, but it also performs excellently in terms of specificity, precision, linearity, and simplicity compared with in-vivo rat bioassays. These results implied that this robust reporter gene assay may be a viable supplement to the animal in-vivo bioassay and may be employed in potency determination of rhFSH pharmaceutical products.
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Alvarez RH, Natal FLN, Ribela MTCP, de Almeida BE, de Oliveira JE, Bartolini P. Physical-chemical and biological characterization of different preparations of equine chorionic gonadotropin. J Vet Sci 2017; 17:459-465. [PMID: 27297410 PMCID: PMC5204023 DOI: 10.4142/jvs.2016.17.4.459] [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: 09/25/2015] [Revised: 03/17/2016] [Accepted: 05/12/2016] [Indexed: 02/05/2023] Open
Abstract
Ovarian stimulation with commercial preparations of equine chorionic gonadotropin (eCG) produces extremely variable responses in domestic animals, ranging from excessive stimulation to practically no stimulation, when applied on the basis of their declared unitage. This study was conducted to analyze four commercial preparations from different manufacturers via reversed-phase HPLC (RP-HPLC) in comparison with a reference preparation and an official International Standard from the World Health Organization. The peaks obtained by this qualitative and quantitative physical–chemical analysis were compared using an in vivo bioassay based on the ovarian weight gain of prepubertal female rats. The RP-HPLC data showed one or two peaks close to a main peak (tR = 27.9 min), which were related to the in vivo bioactivity. Commercial preparations that have this altered peak showed very little or no in vivo activity, as demonstrated by rat ovarian weight and in peripubertal gilts induced to ovulate. Overall, these findings indicate that RP-HPLC can be a rapid and reliable tool to reveal changes in the physicochemical profile of commercial eCG that is apparently related to decreased biological activity of this hormone.
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Affiliation(s)
| | | | | | - Beatriz Elane de Almeida
- Biotechnology Department, IPEN-CNEN, Cidade Universitária Sao Paulo, 05508-000 São Paulo, Brazil
| | | | - Paolo Bartolini
- Biotechnology Department, IPEN-CNEN, Cidade Universitária Sao Paulo, 05508-000 São Paulo, Brazil
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Sharaibi OJ, Afolayan AJ. Biochemical and Hormonal Effects of Nymphaea lotus Aqueous Extract on Hyperprolactinemic Female Wistar Rats. ACTA ACUST UNITED AC 2017. [DOI: 10.3923/ajb.2017.91.98] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Stamm FP, Calegari GZ, de Freitas GW, Souto RB, Porto LP, Cardoso CDA, Dalmora SL. Assessment of recombinant human parathyroid hormone: correlation of LC methods with bioassays. Analyst 2013; 138:1419-26. [PMID: 23324983 DOI: 10.1039/c2an36583a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reversed-phase liquid chromatography (RP-LC) and size exclusion liquid chromatography (SE-LC) methods were validated for the assessment of recombinant human parathyroid hormone (rhPTH 1-34). The gradient RP-LC method was carried out on a Zorbax 300 SB C(18) column (150 mm × 4.6 mm i.d.), maintained at 40 °C. The mobile phase A consisted of 0.1 M sodium sulphate buffer, pH 2.3, and the mobile phase B was acetonitrile. The SE-LC method was carried out on a BioSep-SEC-S 2000 column (300 mm × 7.8 mm i.d.), maintained at 25 °C. The mobile phase consisted of 0.1 M phosphoric acid buffer, pH 2.5, run isocratically at a flow rate of 0.7 mL min(-1). Chromatographic separation was obtained with retention times of 12.2 min, and 13.2 min, and was linear over the concentration range of 1-250 μg mL(-1) (r(2) = 0.9997) and 2-300 μg mL(-1) (r(2) = 0.9993), respectively, for RP-LC and SE-LC, with photodiode array (PDA) detection at 214 nm. Specificity was established in degradation studies, which also showed that there was no interference of the excipients. Equally, the accuracy was 100.49% and 100.22%, with bias lower than 1.12% and 0.81% respectively. Moreover, the in vitro cytotoxicity test of related proteins and higher molecular weight forms showed significant differences (p < 0.05). Chromatographic methods were applied for the content/potency assessment of rhPTH and related proteins in biopharmaceutical injectable dosage forms, and the results were correlated with those of in vitro and in vivo bioassays. It is concluded that the employment of the methods in conjunction allows a great improvement in monitoring stability, contributing to evaluate alternatives which improve the quality control and thereby assure the therapeutic efficacy of the biotechnology-derived medicine.
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Affiliation(s)
- Fernanda P Stamm
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil
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Almeida B, Oliveira J, Damiani R, Dalmora S, Bartolini P, Ribela M. Qualitative and quantitative reversed-phase high performance liquid chromatographic analysis of glycoprotein hormones in the presence of a large excess of human serum albumin. J Pharm Biomed Anal 2012; 63:160-4. [DOI: 10.1016/j.jpba.2012.01.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Revised: 01/27/2012] [Accepted: 01/29/2012] [Indexed: 12/22/2022]
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SOUTO RB, STAMM FP, RIBELA MTDCP, BARTOLINI P, CALEGARI GZ, DALMORA SL. Validation of a Stability-indicating RP-LC Method for the Assessment of Recombinant Human Interleukin-11 and Its Correlation with Bioassay. ANAL SCI 2012; 28:215-20. [DOI: 10.2116/analsci.28.215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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