Abstract:
:The aim of this study was to develop a freeze-drying protocol facilitating successful processing of plant material containing the small surface antigen of hepatitis B virus (S-HBsAg) while preserving its VLP structure and immunogenicity. Freeze-drying of the antigen in lettuce leaf tissue, without any isolation or purification step, was investigated. Each process step was consecutively evaluated and the best parameters were applied. Several drying profiles and excipients were tested. The profile of 20°C for 20 h for primary and 22°C for 2 h for secondary drying as well as sucrose expressed efficient stabilisation of S-HBsAg during freeze-drying. Freezing rate and postprocess residual moisture were also analysed as important factors affecting S-HBsAg preservation. The process was reproducible and provided a product with VLP content up to 200 µg/g DW. Assays for VLPs and total antigen together with animal immunisation trials confirmed preservation of antigenicity and immunogenicity of S-HBsAg in freeze-dried powder. Long-term stability tests revealed that the stored freeze-dried product was stable at 4°C for one year, but degraded at elevated temperatures. As a result, a basis for an efficient freeze-drying process has been established and a suitable semiproduct for oral plant-derived vaccine against HBV was obtained.
journal_name
Biomed Res Intjournal_title
BioMed research internationalauthors
Czyż M,Dembczyński R,Marecik R,Wojas-Turek J,Milczarek M,Pajtasz-Piasecka E,Wietrzyk J,Pniewski Tdoi
10.1155/2014/485689subject
Has Abstractpub_date
2014-01-01 00:00:00pages
485689eissn
2314-6133issn
2314-6141journal_volume
2014pub_type
杂志文章abstract::Ricin is a potential biothreat agent with no approved antidote available for ricin poisoning. The aim of this study was to develop potent antibody-based antiricin antidotes. Four strong ricin resistant hybridoma clones secreting antiricin monoclonal antibodies (mAbs) were developed. All four mAbs are bound to conforma...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/471346
更新日期:2013-01-01 00:00:00
abstract:Background:Cardiogenic shock is associated with high mortality, despite new strategies for reperfusion therapy. Short-term circulatory support devices may provide adequate support for appropriate myocardial and organ perfusion. Objectives:This review is aimed at evaluating the impact on survival when using venoarteria...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/6126534
更新日期:2020-04-19 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/9024923
更新日期:2020-05-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2014/531508
更新日期:2014-01-01 00:00:00
abstract::Ankylosing spondylitis (AS) is a chronic inflammatory rheumatic disease associated with accelerated atherosclerosis and increased risk of cardiovascular (CV) disease. AS patients also display a high prevalence of features clustered under the name of metabolic syndrome (MeS). Anti-TNF- α therapy was found to be effecti...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2014/860651
更新日期:2014-01-01 00:00:00
abstract:Objectives:Obstructive sleep apnea (OSA) is a common disorder influenced by genetic and environmental factors. Mutations of AT-hook DNA-binding motif containing 1 (AHDC1) gene have been implicated which could cause rare syndromes presenting OSA. This study aims to investigate some rare mutations of AHDC1 in Chinese Han...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/5907361
更新日期:2019-10-13 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/7360354
更新日期:2017-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/7626215
更新日期:2020-06-07 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/5239082
更新日期:2018-06-19 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/8983494
更新日期:2020-10-16 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/2413197
更新日期:2017-01-01 00:00:00
abstract::The cyprinid genus Pteronotropis is endemic to southeastern Gulf of Mexico and Atlantic Ocean of North America. Never before has the genus been demonstrated to be monophyletic. We investigate both the phylogenetic relationships and the phylogeography of some species in the genus using mitochondrial ND2 sequences. In n...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/675260
更新日期:2015-01-01 00:00:00
abstract::Protein phosphorylation is one of the most widespread regulatory mechanisms in eukaryotes. Over the past decade, phosphorylation site prediction has emerged as an important problem in the field of bioinformatics. Here, we report a new method, termed Random Forest-based Phosphosite predictor 2.0 (RF-Phos 2.0), to predi...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2016/3281590
更新日期:2016-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/919374
更新日期:2013-01-01 00:00:00
abstract::C-type lectins are multifunctional sugar-binding molecules expressed on dendritic cells (DCs) and macrophages that internalize antigens for processing and presentation. Macrophage galactose-type lectin 1 (MGL1) recognizes glycoconjugates expressing Lewis X structures which contain galactose residues, and it is selecti...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/615865
更新日期:2015-01-01 00:00:00
abstract::Tuberculosis is an infectious disease caused by Mycobacterium tuberculosis (Mtb, i.e., the aetiological agent); the WHO has established this disease as high priority due to its ensuing mortality. Mtb uses a range of mechanisms for preventing its elimination by an infected host; new, viable alternatives for blocking th...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/8680935
更新日期:2019-04-14 00:00:00
abstract::Coconut palm (Cocos nucifera) is an important commercial crop in many tropical countries, but its industry generates large amounts of residue. One way to address this problem is to use this residue, coconut husk, to produce second-generation (2G) ethanol. The aim of this review is to describe the methods that have bee...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2018/4916497
更新日期:2018-09-27 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/9876363
更新日期:2020-05-04 00:00:00
abstract::Primary ciliary dyskinesia (PCD) is a clinical rare peculiar disorder, mainly featured by respiratory infection, tympanitis, nasosinusitis, and male infertility. Previous study demonstrated it is an autosomal recessive disease and by 2017 almost 40 pathologic genes have been identified. Among them are the leucine-rich...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/1854269
更新日期:2018-01-08 00:00:00
abstract::Porcine circovirus virus type II (PCV2) is the etiology of postweaning multisystemic wasting syndrome (PMWS), porcine dermatitis, nephropathy syndrome (PDNS), and necrotizing pneumonia. Rapid diagnosis tool for detection of PCV2 plays an important role in the disease control and eradication program. Recombinase polyme...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/8403642
更新日期:2017-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/1905987
更新日期:2017-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/914026
更新日期:2015-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/8169615
更新日期:2018-04-23 00:00:00
abstract:Background:Reduced baroreflex sensitivity (BRS) has been reported in patients with acute cardiovascular events. We tested the hypothesis that BRS varies in different subtypes of acute ischemic stroke (AIS) and that BRS is a predictor of clinical outcomes. Methods:We examined autonomic parameters in 34 patients with AI...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/7614828
更新日期:2019-04-18 00:00:00
abstract::The purpose of this study was to compare the effect of PbtO2-guided therapy with traditional intracranial pressure- (ICP-) guided treatment on the management of cerebral variables, therapeutic interventions, survival rates, and neurological outcomes of moderate and severe traumatic brain injury (TBI) patients. From 20...
journal_title:BioMed research international
pub_type: 杂志文章,随机对照试验
doi:10.1155/2015/529580
更新日期:2015-01-01 00:00:00
abstract:Objectives:The aim of this study was to evaluate the influence of ferule and the post type on the fracture strength and stress distribution in premolars. Materials and Methods:Forty human mandibular premolars were decoronated, allocated in four groups, and restored as follows: CPC-NF: cast post-and-core and absence of...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/2196519
更新日期:2019-01-03 00:00:00
abstract::Sericin is a natural protein component of silks of silkworm and has potential utility in multiple areas such as pharmacological, cosmetics, and biotechnological industries. However, the understanding of its toxicological safety is still limited. This study evaluated the safety of water-extract sericin from silkworm (B...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/9689386
更新日期:2020-11-05 00:00:00
abstract::Saponins are a group of naturally occurring plant glycosides with the features of their strong foam-forming properties and multibiological effects such as antitumor activity. Though Misaponin B, one of the triterpenoid saponins from Madhuca longifolia, is known to have spermicidal and antioxidant activity, the other b...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/5925094
更新日期:2020-02-07 00:00:00
abstract::Hosts' innate defense systems are upregulated by antimicrobial peptide elicitors (APEs). Our aim was to investigate the effects of hyperthermia, ultraviolet A rays (UVA), and ultraviolet C rays (UVC) as well as glucose and ascorbic acid (AA) on the regulation of human β-defensin 1 (DEFB1), cathelicidin (CAMP), and int...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/714580
更新日期:2015-01-01 00:00:00
abstract:Introduction:Rapid eye movement sleep behavior disorder (RBD) is characterized by dream-enacting behavior (shouting, punching, and falling out of bed) related to unpleasant dreams and loss of normal rapid eye movement (REM) sleep muscle atonia. Rapid eye movement sleep enhances learning and memory by regulating neurona...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/1810836
更新日期:2020-05-15 00:00:00