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Records with Subject: Biosystems
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Hepatic mRNA Expression Levels of the Oncogenes Alpha-Fetoprotein and Osteopontin as Diagnostics for Liver Cancer in a Murine Model of Diet-Induced Non-Alcoholic Steatohepatitis
Anthony J. Pellicano, Stephanie Mullan, Itzhak D. Goldberg, Prakash Narayan
February 23, 2023 (v1)
Subject: Biosystems
Keywords: alpha-fetoprotein, fibrosis, hepatocellular carcinoma, mRNA, non-alcoholic steatohepatitis, osteopontin
Non-alcoholic steatohepatitis (NASH) is associated with an increased risk of hepatocellular carcinoma (HCC). Expression levels of hepatic oncogenes, alpha-fetoprotein (afp) and osteopontin (opn)/secreted phosphoprotein 1 (spp1), were investigated using a model of diet-induced NASH. Mice were randomized to a standard diet or a fast-food diet (FFD) for 17 months. Livers from the FFD cohort exhibited hallmark characteristics of NASH with liver fibrosis, with a subset of animals exhibiting HCC. Expression levels of hepatic afp and opn/spp1 were elevated ~2.5 and ~5-fold, respectively, in the FFD cohort. Hepatic opn/spp1 exhibited a direct (r = 0.65) and significant (p < 0.01) correlation with liver hydroxyproline content. Receiver operating characteristic (ROC) curve analysis for hepatic afp, as a diagnostic for HCC, returned an area under (AU) ROC 0.84, a sensitivity of 87.5%, a specificity of 77% and a threshold of >1.05-fold change in mRNA level. The use of hepatic opn/ssp1 as a diagnos... [more]
Novel One-Step Process for the Production of Bioplastic from Rapeseed Press Cake
Wassim Ammar, Frédéric Delbecq, Isabelle Vroman, Houcine Mhemdi
February 23, 2023 (v1)
Subject: Biosystems
Keywords: graphene oxide composite, plasticizer-free process, protein-based bioplastic, rapeseed cake, valorization
Crude rapeseed cake was employed as the starting material for the preparation of protein-based bioplastic films through a wet process. A simple exposure of the agricultural waste to formic acid realized at 40 °C for 15 min could afford a slurry ready for producing robust bioplastic films by casting without another plasticizer addition. After determining the optimal process conditions, all films and membranes were successively characterized by DSC and FT-IR spectroscopy. They were also tested for their water absorption capacity, tensile strength, and elongation at break performance. The respective surface morphology and elementary composition of the products were determined by FE-SEM/EDX. Some attempts to improve their intrinsic properties were performed by loading graphene oxide inside the biopolymer three-dimensional matrix.
Comprehensive Understanding of Roller Milling on the Physicochemical Properties of Red Lentil and Yellow Pea Flours
Manoj Kumar Pulivarthi, Eric Nkurikiye, Jason Watt, Yonghui Li, Kaliramesh Siliveru
February 23, 2023 (v1)
Subject: Biosystems
Keywords: particle size, protein, pulses, red lentils, roller milling, yellow pea
The development of convenience foods by incorporating nutrient-rich pulses such as peas and lentils will tremendously alter the future of pulse and cereal industries. However, these pulses should be size-reduced before being incorporated into many food products. Therefore, an attempt was made to adapt roller mill settings to produce de-husked yellow pea and red lentil flours. The milling flowsheets unique to yellow peas and red lentils were developed in producing small, medium, and large flours with maximum yield and flour quality. This study also investigated the differences in chemical composition, physical characteristics, and particle size distributions of the resultant six flour fractions. The kernel dimensions and physicochemical properties of the whole yellow pea and red lentils were also studied to develop customized mill settings. Overall, the mill settings had a significant effect on the physical properties of different particle-sized flours. The geometric mean diameters of d... [more]
Layered Double Hydroxides as a Drug Delivery Vehicle for S-Allyl-Mercapto-Cysteine (SAMC)
Ivan Vito Ferrari, Riccardo Narducci, Giuseppe Prestopino, Ferdinando Costantino, Alessio Mattoccia, Lina Di Giamberardino, Morena Nocchetti, Maria Luisa Di Vona, Annalisa Paolone, Marzia Bini, Riccardo Pezzilli, Ilaria Borromeo, Simone Beninati, Pier Gianni Medaglia
February 23, 2023 (v1)
Subject: Biosystems
Keywords: antitumor garlic derivative molecules, cancer, drug delivery, hepatoma, intercalation compounds, S-allyl-mercapto-cysteine (SAMC), ZnAl-LDH
The intercalations of anionic molecules and drugs in layered double hydroxides (LDHs) have been intensively investigated in recent years. Due to their properties, such as versatility in chemical composition, good biocompatibility, high density and protection of loaded drugs, LDHs seem very promising nanosized systems for drug delivery. In this work, we report the intercalation of S-allyl-mercapto-cysteine (SAMC), which is a component of garlic that is well-known for its anti-tumor properties, inside ZnAl-LDH (hereafter LDH) nanostructured crystals. In order to investigate the efficacy of the intercalation and drug delivery of SAMC, the intercalated compounds were characterized using X-ray powder diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The increase in the interlayer distance of LDH from 8.9 Å, typical of the nitrate phase, to 13.9 Å indicated the intercalation of SAMC, which was also confirmed using FT-IR spectra. Indeed... [more]
Harnessing the Potential of Symbiotic Endophytic Fungi and Plant Growth-Promoting Rhizobacteria to Enhance Soil Quality in Saline Soils
Zahra Rouydel, Mohsen Barin, Mir Hassan Rasouli-Sadaghiani, Maryam Khezri, Ramesh Raju Vetukuri, Sandeep Kushwaha
February 23, 2023 (v1)
Subject: Biosystems
Keywords: biological indices, endophytic, micro-organisms, salinity, wheat
Soil salinity is one of the most important abiotic stresses limiting crop growth and production worldwide. Some microorganisms can improve the plants’ tolerance to salinity. For this purpose, a greenhouse experiment was performed to understand the influence of various microorganisms on soil biological indices and wheat growth under different saline conditions. The factors varied in the experiment were the microbial treatment (rhizobacteria, mycorrhizal fungi, endophytic fungus, and control) and salinity stress (0.5, 8, and 14 dS m−1). Rhizobacteria were isolated from saline soils, but the fungi were prepared from a microbial bank. Overall, ten isolates were purified, and three with promising growth-promoting properties were identified using phenotypic and molecular methods. The selected isolates belonged to the genera Pseudomonas (P. aeruginosa Ur83 and P. fluorescens Ur67) and Stenotrophomonas (S. maltophilia Ur52). Soil quality indices were found to decrease with increasing salinity,... [more]
Exhaustive Plant Profile of “Dimocarpus longan Lour” with Significant Phytomedicinal Properties: A Literature Based-Review
Priyanka Paul, Partha Biswas, Dipta Dey, Abu Saim Mohammad Saikat, Md. Aminul Islam, Md Sohel, Rajib Hossain, Abdullah Al Mamun, Md. Ataur Rahman, Md. Nazmul Hasan, Bonglee Kim
February 23, 2023 (v1)
Subject: Biosystems
Keywords: 4-O-methyl gallic acid, anti-colorectal cancer, antiproliferative, Dimocarpus longan Lour, flavonoid, immunomodulatory, neurological disorder, obesity
Background: “Dimocarpus longan Lour” is a tropical and subtropical evergreen tree species mainly found in China, India, and Thailand; this plant, found naturally in Bangladesh, even locally, is used as “kaviraj” medication for treating different diseases, such as gastrointestinal disorders, wounds, fever, snake bites, menstrual problem, chickenpox, bone fractures, neurological disorders, and reproductive health. Different parts of this plant, especially juice pulp, pericarp, seeds, leaves, and flowers, contain a diverse group of botanical phytocompounds, and nutrient components which are directly related to alleviating numerous diseases. This literature-based review provides the most up-to-date data on the ethnomedicinal usages, phytochemical profiling, and bio-pharmacological effects of D. longan Lour based on published scientific articles. Methodology: A literature-based review was conducted by collecting information from various published papers in reputable journals and cited organ... [more]
Potential Use of Papaya Waste as a Fuel for Bioelectricity Generation
Segundo Rojas-Flores, Orlando Pérez-Delgado, Renny Nazario-Naveda, Henry Rojales-Alfaro, Santiago M. Benites, Magaly De La Cruz-Noriega, Nélida Milly Otiniano
February 23, 2023 (v1)
Subject: Biosystems
Keywords: electricity, generation, microbial fuel cells, papaya, waste
Papaya (Carica papaya) waste cause significant commercial and environmental damage, mainly due to the economic losses and foul odours they emit when decomposing. Therefore, this work provides an innovative way to generate electricity for the benefit of society and companies dedicated to the import and export of this fruit. Microbial fuel cells are a technology that allows electricity generation. These cells were produced with low-cost materials using zinc and copper electrodes; while a 150 mL polymethylmethacrylate tube was used as a substrate collection chamber (papaya waste). Maximum values of 0.736 ± 0.204 V and 5.57 ± 0.45 mA were generated, while pH values increased from 3.848 to 8.227 ± 0.35 and Brix decreased slowly from the first day. The maximum power density value was 878.38 mW/cm2 at a current density of 7.245 A/cm2 at a maximum voltage of 1072.77 mV. The bacteria were identified with an identity percentage of 99.32% for Achromobacter xylosoxidans species, 99.93% for Acineto... [more]
Physicochemical and Nutritional Evaluation of Bread Incorporated with Ayocote Bean (Phaseolus coccineus) and Black Bean (Phaseolus vulgaris)
Rosa María Mariscal-Moreno, Cristina Chuck-Hernández, Juan de Dios Figueroa-Cárdenas, Sergio O. Serna-Saldivar
February 23, 2023 (v1)
Subject: Biosystems
Keywords: ayocote bean, black bean, bread, protein digestibility, sensorial properties
The objective of this study was to examine the physicochemical composition, thermal properties, quality, and sensorial characteristics of bread with substitution of wheat flour with ayocote bean (Phaseolus coccineus) or black bean (Phaseolus vulgaris) flours at 10, 20, and 30%. Ayocote and black bean contain 21.06 and 23.94% of protein, 3.06 and 5.21% of crude fiber, and 3.1 and 5.21% of ash, respectively, directly influencing bread composition. Bread with ayocote and black bean presented higher values in those components in contrast with control bread. The protein content increased in a range of 14−34%; ash increased by 10% to double, and crude fiber also increased. In vitro protein digestibility was similar for bread with 10% of substitution and control, and it decreased in samples with 30% of wheat substitution. Thermal analysis by DSC denoted that the addition of those legumes reduces retrogradation, as seen in 45.33−65.65 °C endotherm, producing higher endotherms of amylose-lipid... [more]
Drug Repurposing in Alternative Medicine: Sochehwan, a Polyherbal Traditional Korean Digestant, Protects against Alcoholic Steatohepatitis by Regulating Cytochrome P450 2E1 Expression
Ga-Ram Yu, Seung-Jun Lee, Dong-Woo Lim, Hyuck Kim, Jai-Eun Kim, Won-Hwan Park
February 23, 2023 (v1)
Subject: Biosystems
Keywords: alcoholic liver disease, alcoholic liver injury, CYP2E1, drug repurposing, ER stress, inflammation, MAPKs, Sochehwan
Sochehwan (SCH) is an herbal prescription from traditional oriental medicine and is currently used to treat digestive ailments. In a previous study, SCH was found to have the potential to attenuate metabolic syndrome (MetS) by activating AMPK and downstream signaling. From the view of drug repurposing, the efficacy of SCH on alcoholic liver injury is implied in classic medical texts but is yet to be proven. C57BL/6J mice were pre-treated with SCH orally for 5 days and challenged by providing a pair-fed Lieber DeCarli diet containing alcohol for 20 days. Hepatic enzyme and triglyceride levels and endoplasmic reticulum (ER) stress-related markers were analyzed. Moreover, mitogen-activated protein kinases (MAPKs) and cytochrome P450 2E1 (CYP2E1) levels were determined. CYP2E1-transfected HepG2 cells were used to test the cytoprotective efficacy of SCH against the adverse effects of alcohol in vitro. In mice, SCH administration notably reduced hepatic enzyme activity and neural lipid level... [more]
Estimation of Gene Regulatory Networks from Cancer Transcriptomics Data
Seong Beom Cho
February 23, 2023 (v1)
Subject: Biosystems
Keywords: cancer, gene regulatory network, transcriptomics
Cancer is a genetic disease in which multiple genes are perturbed. Thus, information about the regulatory relationships between genes is necessary for the identification of biomarkers and therapeutic targets. In this review, methods for inference of gene regulatory networks (GRNs) from transcriptomics data that are used in cancer research are introduced. The methods are classified into three categories according to the analysis model. The first category includes methods that use pair-wise measures between genes, including correlation coefficient and mutual information. The second category includes methods that determine the genetic regulatory relationship using multivariate measures, which consider the expression profiles of all genes concurrently. The third category includes methods using supervised and integrative approaches. The supervised approach estimates the regulatory relationship using a supervised learning method that constructs a regression or classification model for predic... [more]
Integrative Network Pharmacology of Moringa oleifera Combined with Gemcitabine against Pancreatic Cancer
Nursaffa Alisya Sahruddin, Zhong Sun, Norsyasya Adriana Rosdi, Sudha Warrier, Karuppiah Thilakavathy
February 23, 2023 (v1)
Subject: Biosystems
Keywords: bioactive compound, gemcitabine, Moringa oleifera, network pharmacology, pancreatic cancer
Gemcitabine (GEM) is the first-line chemotherapy drug for patients with advanced pancreatic cancer. Moringa oleifera (MO) exhibited various biological activities, including anticancer effects. Nevertheless, the effectiveness of their combination against pancreatic cancer has not yet been explored. This study evaluates the effect of MO and GEM against pancreatic cancer through network pharmacology. TCMSP, TCMID, and PubMed were used to identify and screen MO bioactive compounds. MO and GEM genes were predicted through DGIdb, CTD, and DrugBank. Pancreatic cancer genes were retrieved from OMIM and MalaCards. Protein−protein interaction (PPI) and compound-target-pathway network were established via STRING and Cytoscape. Gene ontology (GO) and pathway enrichment analysis were conducted using DAVID Bioinformatic Tools. Catechin, kaempferol, quercetin, and epicatechin that met the drug screening requirements, and three additional compounds, glucomoringin, glucoraphanin, and moringinine, were... [more]
Time-Course Transcriptome Analysis Reveals Global Gene Expression Profiling and Dynamic Developmental Signatures across Complete Life Cycle of Bombyx mori
Xueqi Wang, Yixuan Fan, Qi Ge, Jia Xu, Rehab Hosny Taha, Yi Yuan, Keping Chen
February 23, 2023 (v1)
Subject: Biosystems
Keywords: B. mori, development, gene expression, life-cycle stage, RNA-Seq
The silkworm (Bombyx mori) is an important lepidopteran model insect worldwide which undergoes a complete metamorphosis developmental process. Although genome sequencing has been long performed, no transcriptome data covering the complete life cycle are available. Methods: Herein, a total of 10 samples were collected consecutively at four different developmental stages, including eggs of 24 h after oviposition (Ed) and eggs of 24 h after artificial egg-hatching (E); larvae from fist to fifth instar (L1−L5); early and late pupa (P4 and P8); and adult moth (M), were subjected to Illumina RNA-Seq and time-course analysis. Results: The summations of the gene expression of the silkworm ten developmental stages show: at Ed stage, eggs develop towards diapause status, the total gene expression level is relatively low; at E stage, after artificial egg-hatching, the expression level improves rapidly; during larval stages from L1−L5, the expression level rises gradually and reaches a peak at L5... [more]
Hydroxyapatite Precipitation and Accumulation in Granules and Its Effects on Activity and Stability of Partial Nitrifying Granules at Moderate and High Temperatures
Yong-Qiang Liu, Simone Cinquepalmi
February 23, 2023 (v1)
Subject: Biosystems
Keywords: calcite, hydroxyapatite, microbial activity, nitrifying granules, phosphorus removal and recovery, stability
Precipitation and accumulation of calcium phosphate in granular sludge has attracted research attention recently for phosphate removal and recovery from wastewater. This study investigated calcium phosphate accumulation from granulation stage to steady state by forming heterotrophic granules at different COD/N ratios at 21 and 32 °C, respectively, followed by the transformation of heterotrophic granules to partial nitrifying granules. It was found that mature granules accumulated around 60−80% minerals in granules, much higher than young granules with only around 30% ash contents. In addition, high temperature promoted co-precipitation of hydroxyapatite and calcite in granules with more calcite than hydroxyapatite and only 4.1% P content, while mainly hydroxyapatite was accumulated at the moderate temperature with 7.7% P content. The accumulation of minerals in granules at the high temperature with 75−80% ash content also led to the disintegration and instability of granules. Specific... [more]
Evaluating the Performances of Interval Starting Accessibility Drying (ISAD) through Protein and Total Polyphenol Contents of Blue Crabmeat (Portunus segnis)
Hela Gliguem, Wafa Hajji, Chaima Rekik, Karim Allaf, Sihem Bellagha
February 23, 2023 (v1)
Subject: Biosystems
Keywords: air velocity, continuous drying, crabmeat, ISAD, proteins, total polyphenols
Blue crab (Portunus segnis) proliferation on Tunisian coasts started in 2014/2015. It has heavily impacted the balance of other species, local biodiversity, and fishing activity. Limiting these drawbacks may be achieved through ways promoting crabmeat. For this purpose, two different drying modes were tested: Conventional convective drying (CCD) and interval starting accessibility drying (ISAD) under 45 °C and relative humidity of 40%. Several air velocities were assayed under CCD: 1.5, 2.5, 3.5, and 5 m.s−1. Two different ISAD tests were run with different time-related conditions: drying period of 15 s and tempering period of 15 or 60 s. Drying modes and operating conditions performances were compared through proteins and total polyphenol contents (TPCs) evolution during the treatment. Important polyphenol and protein losses were observed between raw and processed crabmeat. Airflow velocities have a significant effect on crabmeat quality preservation. ISAD method under 15 s/60 s allow... [more]
Sustainable Application of Biosorption and Bioaccumulation of Persistent Pollutants in Wastewater Treatment: Current Practice
Ctlina Filote, Mihaela Roșca, Raluca Maria Hlihor, Petronela Cozma, Isabela Maria Simion, Maria Apostol, Maria Gavrilescu
February 23, 2023 (v1)
Subject: Biosystems
Keywords: heavy metals, microorganisms, persistent organic pollutants, process scale-up, removal mechanisms
Persistent toxic substances including persistent organic pollutants and heavy metals have been released in high quantities in surface waters by industrial activities. Their presence in environmental compartments is causing harmful effects both on the environment and human health. It was shown that their removal from wastewaters using conventional methods and adsorbents is not always a sustainable process. In this circumstance, the use of microorganisms for pollutants uptake can be seen as being an environmentally-friendly and cost-effective strategy for the treatment of industrial effluents. However, in spite of their confirmed potential in the remediation of persistent pollutants, microorganisms are not yet applied at industrial scale. Thus, the current paper aims to synthesize and analyze the available data from literature to support the upscaling of microbial-based biosorption and bioaccumulation processes. The industrial sources of persistent pollutants, the microbial mechanisms fo... [more]
Bioactive Peptides from Liquid Milk Protein Concentrate by Sequential Tryptic and Microbial Hydrolysis
Arijit Nath, Attila Csighy, Burak Attila Eren, David Tjandra Nugraha, Klára Pásztorné-Huszár, Attila Tóth, Krisztina Takács, Emőke Szerdahelyi, Gabriella Kiskó, Zoltán Kovács, András Koris, Gyula Vatai
February 23, 2023 (v1)
Subject: Biosystems
Keywords: allergenic property, angiotensin-converting enzyme inhibitory activity, antibacterial activity, antigenic property, antioxidant capacity, aquaphotomics, liquid milk protein concentrate, microbial hydrolysis, peptides, tryptic hydrolysis
Recently, bioactive peptides as a health-promoting agent have come to the forefront of health research; however, industrial production is limited, possibly due to the lack of the required technological knowledge. The objective of the investigation was to prepare bioactive peptides with hypoallergenic properties from liquid milk protein concentrate (LMPC), through sequential enzymatic and microbial hydrolysis. LMPC was produced from ultra-heat-treated (UHT) skimmed cow’s milk using a nanofiltration membrane. The effect of the concentration of trypsin (0.008−0.032 g·L−1) on the hydrolysis of LMPC was studied. Subsequently, the hydrolysis of tryptic-hydrolyzed LMPC (LMPC-T) with lactic acid bacteria was performed, and the effect of glucose in microbial hydrolysis was studied. Aquaphotomic analysis of the hydrolysis of LMPC was performed using the spectral range of 1300−1600 nm (near-infrared spectra). Changes in antioxidant capacity, anti-angiotensin-converting enzyme activity, and antiba... [more]
Response Surface Optimization of Culture Conditions for Cyclic Lipopeptide MS07 from Bacillus siamensis Reveals Diverse Insights Targeting Antimicrobial and Antibiofilm Activity
Md Maruf Khan, Young Kyun Kim, Seung Sik Cho, Ying-Yu Jin, Joo-Won Suh, Dae Young Lee, Jin Cheol Yoo
February 23, 2023 (v1)
Subject: Biosystems
Keywords: antibiofilm, antimicrobial peptide, cyclic lipopeptide, killing kinetics, response surface methodology
Efforts to isolate a broad-spectrum antimicrobial peptide (AMP) from microbial sources have been on the rise recently. Here, we report the identification, the optimization of the culture conditions, and the characterization of an efficient AMP from the Bacillus strain designated MS07 that exhibits antimicrobial and antibiofilm activity. The production of MS07 was maximized by evaluating the culture conditions by the response surface methodology to obtain optimum media compositions. The biochemical integrity of MS07 was assessed by a bioassay indicating inhibition at ~6 kDa, like tricine-SDS-PAGE. MALDI-TOF confirmed the molecular weight and purity, showing a molecular mass of 6.099 kDa. Peptide MS07 exhibited antimicrobial activity against both Gram-positive and Gram-negative bacteria. The MIC of MS07 for Escherichia coli, Alcaligenes faecalis, MRSA, and Pseudomonas aeruginosa ranged from 16−32 µg/mL, demonstrating superior potency. The biomass was diminished by about 15% and 11%, with... [more]
Human Dental Pulp Cells form Spheroids in the Presence of Serum When Seeded on a Low-Attachment Cultural Surface
Linna Guo, Ziang Zou, Marcus Freytag, Reinhard E. Friedrich, Philip Hartjen, Martin Gosau, Ralf Smeets, Lan Kluwe
February 23, 2023 (v1)
Subject: Biosystems
Keywords: dental pulp cells, differentiation, low attachment plate, spheroids, stem cell
Spheroid formation is a characteristic feature of stem/progenitor cells. Under a serum-free cultural condition, human dental pulp cells can form spheroids. In the present study, we report that these cells can also form spheroids in the presence of serum when seeded on a low-attachment cultural surface. Dental pulp cells derived from three teeth were seeded with surface densities 103−105/cm2 in wells of low attachment and standard cultural plates. Fibroblasts were also seeded onto a low-attachment surface as a comparison. The growth of single spheroids of pulp cells was observed for 7 days. Pulp cells in spheroids and cells attached to the low-attachment surface were separated and further expanded on standard cultural surface in the monolayer and studied for their viability and osteogenic differentiation comparatively. In all three cultures of primary human dental pulp cells on low attachment surface, spheroids formed one day after seeding and grew in size over the 7 days of observation... [more]
Assessment of Psoriatic Skin Features Using Non-Invasive Imaging Technique
Wiktoria Odrzywołek, Anna Deda, Julita Zdrada, Dominika Wcisło-Dziadecka, Aleksandra Lipka-Trawińska, Barbara Błońska-Fajfrowska, Sławomir Wilczyński
February 23, 2023 (v1)
Subject: Biosystems
Keywords: blood perfusion, high-frequency ultrasonography, hyperspectral imaging, psoriasis, thermal imaging
Background: Psoriasis is one of the most commonly recognized dermatological diseases, characterized by distinct structural changes, hyperproliferation and inflammation. The aim of the study was quantitative comparisons of psoriatic skin with skin without psoriatic lesions by non-invasive imaging methods. Methods: 71 patients diagnosed with psoriasis vulgaris underwent non-invasive imaging of skin at the site of the psoriatic lesion and at the site without such lesion. Skin density, epidermis thickness and subepidermal low-echogenic band (SLEB) thickness were measured by high-resolution ultrasound (HFU). Blood perfusion was assessed using laser speckle contrast analysis (LASCA) and skin temperature was measured by thermal imaging camera. Hyperspectral camera was used to obtain spectral reflectance profiles in psoriatic lesion and skin without psoriatic changes. Results: The greatest differences in skin density and epidermal thickness between psoriatic and unchanged skin were observed on... [more]
Continuous-Flow Magnetic Fractionation of Red Blood Cells Based on Hemoglobin Content and Oxygen Saturation—Clinical Blood Supply Implications and Sickle Cell Anemia Treatment
Mitchell Weigand, Jenifer Gomez-Pastora, Andre Palmer, Maciej Zborowski, Payal Desai, Jeffrey Chalmers
February 23, 2023 (v1)
Subject: Biosystems
Keywords: fractionation, magnetic sorter, red blood cell, sickle cell disease, transfusion
Approximately 36,000 units of red blood cells (RBCs) are used every day in the U.S. and there is a great challenge for hospitals to maintain a reliable supply, given the 42-day expiration period from the blood donation date. For many years, research has been conducted to develop ex vivo storage solutions that limit RBC lysis and maintain a high survival rate of the transfused cells. However, little attention is directed towards potential fractionation methods to remove unwanted cell debris or aged blood cells from stored RBC units prior to transfusion, which could not only expand the ex vivo shelf life of RBC units but also avoid adverse events in transfused patients. Such fractionation methods could also limit the number of transfusions required for treating certain pathologies, such as sickle cell disease (SCD). In this work, magnetic fractionation is studied as a potential technology to fractionate functional and healthy RBCs from aged or sickle cells. It has been reported that duri... [more]
Seed Train Intensification Using an Ultra-High Cell Density Cell Banking Process
Jan Müller, Vivian Ott, Dieter Eibl, Regine Eibl
February 23, 2023 (v1)
Subject: Biosystems
Keywords: Chinese hamster ovary cells, cryopreservation, monoclonal antibodies, N−1 perfusion, Process Intensification, upstream processing
A current focus of biopharmaceutical research and production is seed train process intensification. This allows for intermediate cultivation steps to be avoided or even for the direct inoculation of a production bioreactor with cells from cryovials or cryobags. Based on preliminary investigations regarding the suitability of high cell densities for cryopreservation and the suitability of cells from perfusion cultivations as inoculum for further cultivations, an ultra-high cell density working cell bank (UHCD-WCB) was established for an immunoglobulin G (IgG)-producing Chinese hamster ovary (CHO) cell line. The cells were previously expanded in a wave-mixed bioreactor with internal filter-based perfusion and a 1 L working volume. This procedure allows for cryovial freezing at 260 × 106 cells mL−1 for the first time. The cryovials are suitable for the direct inoculation of N−1 bioreactors in the perfusion mode. These in turn can be used to inoculate subsequent IgG productions in the fed-... [more]
Evaluation of Inhibitory Activities of Sophora flavescens and Angelica gigas Nakai Root Extracts against Monoamine Oxidases, Cholinesterases, and β-Secretase
Jong Eun Park, Seul-Ki Mun, Sung-Tae Yee, Hoon Kim
February 23, 2023 (v1)
Subject: Biosystems
Keywords: Angelica gigas Nakai, Extraction, multi-target inhibition, neurodegenerative diseases, Sophora flavescens
In this study, Sophora flavescens (SF) from Yeongcheon (YSF) and Mt. Jiri (JiSF), and Angelica gias (AG) from Yeongcheon (YAG), Mt. Jiri (JiAG), and Jecheon (JeAG) were extracted using three concentrations of ethanol, 95% (95Et), 70% (70Et), and 50% (50Et), and hot water (DW) to evaluate the inhibitions of monoamine oxidases (MAOs; MAO-A and B), cholinesterases (ChEs; AChE and BChE) and β-secretase (BACE1) for targeting depression and neurodegenerative diseases. There were no significant differences in constituent compounds depending on herbal origins, except that YSF-95Et and JiSF-95Et showed a distinct non-polar spot upper maackiain position, and JiAG and JeAG showed a higher amount of decursin than YAG. Ethanolic YAG and JeAG extracts showed the highest MAO-A inhibition, and YSF-95Et mostly inhibited MAO-B. JiSF-95Et showed the highest AChE inhibition and YSF-70Et, JiSF-95Et, and -70Et showed the highest BChE inhibition. Interestingly, ethanolic AG extracts showed extremely potent B... [more]
Effects of Polyethylene Microplastics and Phenanthrene on Soil Properties, Enzyme Activities and Bacterial Communities
Shasha Liu, Kaibo Huang, Guodong Yuan, Chengfang Yang
February 23, 2023 (v1)
Subject: Biosystems
Keywords: microbial community, phenanthrene, polyethylene, soil enzyme, soil properties
Microplastics (MPs) or polycyclic aromatic hydrocarbons (PAHs) pollution has received increasing concern due to their ubiquitous distribution and potential risks in soils. However, nothing is known about the influences of PAHs-MPs combined pollution on soil ecosystems. To address the knowledge gap, a 1-year soil microcosm experiment was conducted to systematically investigate the single and combined effect of polyethylene (PE) /phenanthrene (PHE) on soil chemical properties, enzymatic activities and bacterial communities (i.e., diversity, composition and function). Results showed that PE and PHE-PE significantly decreased soil pH. The available phosphorus (AP) and neutral phosphatase activity were not considerably changed by PHE, PE and PHE-PE. Significant enhancement of dehydrogenase activity in a PHE-PE amended system might be due to the degradation of PHE by indigenous bacteria (i.e., Sphingomonas, Sphingobium), and PE could enhance this stimulative effect. PHE and PHE-PE led to a s... [more]
BACO-17 Alone or in Combination with Galacto-Oligosaccharide Ameliorates Salmonella-Induced Diarrhea and Intestinal Inflammation
Min-Zi Wu, Tsai-Chien Sun, Yu-Wen Huang, Yi-Ching Wu, Wei-Jen Chen, Hui-Fang Chu, Cheng-Yen Liu, Chi-Fai Chau
February 23, 2023 (v1)
Subject: Biosystems
Keywords: antibiotic, Bacillus coagulans BACO-17, diarrhea, galacto-oligosaccharide, intestinal inflammation
In this study, a diarrhea model was established by exposing rats to appropriate antibiotics and Salmonella. After an in vitro screening of prebiotics, fructo-oligosaccharide and galacto-oligosaccharide (GOS) were selected; their synbiotic potential and ability to ameliorate diarrhea symptoms and intestinal inflammation with Bacillus coagulans BACO-17 were evaluated in vivo. After a 27-day feeding experiment including antibiotic intervention and Salmonella infection, it was found that using B. coagulans BACO-17 alone and in combination with GOS as a synbiotic could render a better recovery by lowering diarrhea indexes by 26.9% and 18.7%, respectively. Compared with the negative control, the administration of this synbiotic mixture resulted in the most significant increase in fecal concentrations of total short-chain fatty acids (about 2-fold higher), with a promising improvement in disrupted gut microbial balance. It was worth noting that the administration of B. coagulans BACO-17 alone... [more]
Seed Waste from Custard Apple (Annona squamosa L.): A Comprehensive Insight on Bioactive Compounds, Health Promoting Activity and Safety Profile
Neeraj Kumari, Suraj Prakash, Manoj Kumar, Radha, Baohong Zhang, Vijay Sheri, Nadeem Rais, Deepak Chandran, Abhijit Dey, Tanmay Sarkar, Sangram Dhumal, Sunil Kumar, Dipendra Kumar Mahato, Marthandan Vishvanathan, Pran Mohankumar, Mirian Pateiro, José M. Lorenzo
February 23, 2023 (v1)
Subject: Biosystems
Keywords: anticancer, bioactivities, custard apple seed, health benefits, phytochemistry
L. (custard apple or sugar apple), belonging to the Annonaceae family, is a small tree or shrub that grows natively in subtropical and tropical regions. Seeds of the custard apple have been employed in folk medicines because of the presence of bioactive chemicals/compounds such as alkaloids, flavonoids and phenolic compounds and acetogenins and cyclopeptides that are responsible for various biological activities. The seeds also show the presence of tannins, vitamin C, vitamin E and a higher content of amino acids. From investigations, it has been shown that the seeds of A. squamosa have considerable potential to be used as an antibacterial, hepatoprotective, antioxidant and antitumor/anticancer agent. Cyclosquamosin B, extracted from the custard apple seed, possesses vasorelaxant properties. Tocopherols and fatty acids, notably oleic acid and linoleic acid, are also found in the seed oil. A. squamosa seeds contain a high amount of annonaceous acetogenins compounds, which are potent mit... [more]
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