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Effects of elevated temperature on 8-OHdG expression in the American oyster ( Crassostrea virginica): Induction of oxidative stress biomarkers, cellular apoptosis, DNA damage and γH2AX signaling pathways. FISH AND SHELLFISH IMMUNOLOGY REPORTS 2022; 4:100079. [PMID: 36589260 PMCID: PMC9798191 DOI: 10.1016/j.fsirep.2022.100079] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/10/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
Global temperature is increasing due to anthropogenic activities and the effects of elevated temperature on DNA lesions are not well documented in marine organisms. The American oyster (Crassostrea virginica, an edible and commercially important marine mollusk) is an ideal shellfish species to study oxidative DNA lesions during heat stress. In this study, we examined the effects of elevated temperatures (24, 28, and 32 °C for one-week exposure) on heat shock protein-70 (HSP70, a biomarker of heat stress), 8‑hydroxy-2'-deoxyguanosine (8-OHdG, a biomarker of pro-mutagenic DNA lesion), double-stranded DNA (dsDNA), γ-histone family member X (γH2AX, a molecular biomarker of DNA damage), caspase-3 (CAS-3, a key enzyme of apoptotic pathway) and Bcl-2-associated X (BAX, an apoptosis regulator) protein and/or mRNA expressions in the gills of American oysters. Immunohistochemical and qRT-PCR results showed that HSP70, 8-OHdG, dsDNA, and γH2AX expressions in gills were significantly increased at high temperatures (28 and 32 °C) compared with control (24°C). In situ TUNEL analysis showed that the apoptotic cells in gill tissues were increased in heat-exposed oysters. Interestingly, the enhanced apoptotic cells were associated with increased CAS-3 and BAX mRNA and/or protein expressions, along with 8-OHdG levels in gills after heat exposure. Moreover, the extrapallial (EP) fluid (i.e., extracellular body fluid) protein concentrations were lower; however, the EP glucose levels were higher in heat-exposed oysters. Taken together, these results suggest that heat shock-driven oxidative stress alters extracellular body fluid conditions and induces cellular apoptosis and DNA damage, which may lead to increased 8-OHdG levels in cells/tissues in oysters.
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Key Words
- 8-OHdG, 8‑hydroxy-2′-deoxyguanosine
- BAX, bcl-2-associate X
- BSA, bovine serum albumin
- CAS-3, caspase-3
- Caspase 3
- DSBs, double-stranded breaks
- EP, extrapallial
- Extrapallial fluid
- HSP70
- HSP70, heat shock protein 70
- Heat stress
- Marine mollusks
- PBS, Phosphate buffer saline
- SSBs, single-stranded breaks
- TUNEL, terminal deoxynucleotidyl transferase (TdT) dUTP nick-end labeling
- dsDNA breaks
- dsDNA, double-stranded DNA
- qRT-PCR, quantitative real-time polymerase chain reaction
- ssDNA, single-stranded DNA
- γ-H2AX, γ-histone family member X
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Dual actions of gallic acid and andrographolide trigger AdipoR1 to stimulate insulin secretion in a streptozotocin-induced diabetes rat model. J Tradit Complement Med 2022; 13:11-19. [PMID: 36685073 PMCID: PMC9845651 DOI: 10.1016/j.jtcme.2022.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 08/30/2022] [Accepted: 09/19/2022] [Indexed: 01/25/2023] Open
Abstract
Common treatments for the management of diabetes have limitations due to side effects, hence the need for continuous research to discover new remedies with better therapeutic efficacy. Previously, we have reported that the combination treatment of gallic acid (20 mg/kg) and andrographolide (10 mg/kg) for 15 days demonstrated synergistic hypoglycemic activity in the streptozotocin (STZ)-induced insulin-deficient diabetes rat model. Here, we attempt to further elucidate the effect of this combination therapy at the biochemical, histological and molecular levels. Our biochemical analyses showed that the combination treatment significantly increased the serum insulin level and decreased the total cholesterol and triglyceride level of the diabetic animals. Histological examinations of H&E stained pancreas, liver, kidney and adipose tissues of combination-treated diabetic animals showed restoration to the normalcy of the tissues. Besides, the combination treatment significantly enhanced the level of glucose transporter-4 (GLUT4) protein expression in the skeletal muscle of treated diabetic animals compared to single compound treated and untreated diabetic animals. The molecular docking analysis on the interaction of gallic acid and/or andrographolide with the adiponectin receptor 1 (AdipoR1), a key component in the regulation of pancreatic insulin secretion, revealed a greater binding affinity of AdipoR1 to both compounds compared to individual compounds. Taken together, these findings suggest the combination of gallic acid and andrographolide as a potent therapy for the management of diabetes mellitus.
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Neomenthol prevents the proliferation of skin cancer cells by restraining tubulin polymerization and hyaluronidase activity. J Adv Res 2022; 34:93-107. [PMID: 35024183 PMCID: PMC8655237 DOI: 10.1016/j.jare.2021.06.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 06/07/2021] [Accepted: 06/07/2021] [Indexed: 11/28/2022] Open
Abstract
Introduction Neomenthol, a cyclic monoterpenoid, is a stereoisomer of menthol present in the essential oil of Mentha spp. It is used in food as a flavoring agent, in cosmetics and medicines because of its cooling effects. However, neomenthol has not been much explored for its anticancer potential. Additionally, targeting hyaluronidase, Cathepsin-D, and ODC by phytochemicals is amongst the efficient approach for cancer prevention and/or treatment. Objectives To investigate the molecular and cell target-based antiproliferative potential of neomenthol on human cancer (A431, PC-3, K562, A549, FaDu, MDA-MB-231, COLO-205, MCF-7, and WRL-68) and normal (HEK-293) cell lines. Methods The potency of neomenthol was evaluated on human cancer and normal cell line using SRB, NRU and MTT assays. The molecular target based study of neomenthol was carried out in cell-free and cell-based test systems. Further, the potency of neomenthol was confirmed by quantitative real-time PCR analysis and molecular docking studies. The in vivo anticancer potential of neomenthol was performed on mice EAC model and the toxicity examination was accomplished through in silico, ex vivo and in vivo approaches. Results Neomenthol exhibits a promising activity (IC50 17.3 ± 6.49 μM) against human epidermoid carcinoma (A431) cells by arresting the G2/M phase and increasing the number of sub-diploid cells. It significantly inhibits hyaluronidase activity (IC50 12.81 ± 0.01 μM) and affects the tubulin polymerization. The expression analysis and molecular docking studies support the in vitro molecular and cell target based results. Neomenthol prevents EAC tumor formation by 58.84% and inhibits hyaluronidase activity up to 10% at 75 mg/kg bw, i.p. dose. The oral dose of 1000 mg/kg bw was found safe in acute oral toxicity studies. Conclusion Neomenthol delayed the growth of skin carcinoma cells by inhibiting the tubulin polymerization and hyaluronidase activity, which are responsible for tumor growth, metastasis, and angiogenesis.
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Key Words
- AA, Arachidonic acid
- AKLP, Alkaline phosphatase
- Ab/Am, Antibiotic/antimycotic
- BE, Binding energy
- BIL, Bilirubin total & direct
- BSA, Bovine serum albumin
- BUN, Blood urea nitrogen
- CATD, Cathepsin D
- CHOL, Cholesterol
- CM-H2DCFDA, Chloromethyl derivative of dichloro fluorescin diacetate
- COX-2, Cyclooxygenase 2
- CRTN, Creatinine
- Cancer biomarker
- DCFDA, 2′,7′ dichloro fluorescin diacetate
- DFMO, α-difluoro methyl ornithine
- DHFR, Dihydrofolatereductase
- DMEM, Dulbecco’s minimal essential media
- DMSO, Dimethyl sulfoxide
- DNA, Deoxyribonucleic acid
- DOXO, Doxorubicin
- EAC, Ehlrich Ascites Carcinoma
- EC50, Half maximal effective concentration
- EDTA, Ethylene diamine tetra acetic acid
- ELISA, enzyme-linked immunosorbent assay
- Ehrlich Ascites Carcinoma
- FACS, Fluorescence-Activated Cell Sorting
- FBS, Fetal bovine serum
- FDA, Food and Drug Administration
- FOX, Ferrous oxidation-xylenol orange
- GAPDH, Glyceraldehyde 3-phosphate dehydrogenase, HEPES, N-2-hydroxyethylpiperazine-N′-2-ethanesulfonic acid
- HA, Hyaluronic acid
- HDAC, Histone deacetylase
- HDL, High density lipoprotein
- HYAL, Hyaluronidase
- Human epidermoid carcinoma
- Hyaluronidase
- IC50, Half maximal inhibitory concentration
- IDT, Integrated DNA Technologies
- Ki, Inhibitory constant
- LDH, Lactate dehydrogenase
- LOX-5, Lipoxygenase-5
- MEF, Mean erythrocyte fragility
- MMP, Mitochondrial membrane potential
- MTT, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
- MTX, Methotrexate
- NAC, N-acetyl cysteine
- NADPH, Nicotinamide adenine dinucleotide phosphate hydrogen
- NRU, Neutral red uptake
- NaOH, Sodium hydroxide
- Neomenthol
- ODC, Ornithine decarboxylase
- OECD, Organization for Economic Co-operation and Development
- OF, Osmotic fragility
- PBS, Phosphate buffer saline
- PCR, Polymerase chain reaction
- PDB, Protein Data Bank
- PDT, Podophyllotoxin
- PEP A, pepstatin A
- PI, Propidium iodide
- PI3K, Phosphotidyl inositol-3 kinase
- PKB/Akt, Protein kinase B
- RBC, Red blood cell
- RIPA, Radio immune precipitation assay buffer
- RNA, Ribonucleic acid
- RNase A, Ribonuclease A
- ROS, Reactive oxygen species
- RPMI, Roswell park memorial institute
- Rh123, Rhodamine 123
- SGOT, Aspartate aminotransferase
- SGPT, Alanine aminotransferase
- SRB, Sulphorhodamine B
- TCA, Tricarboxylic acid
- TMPD, N,N,N′,N′-tetramethyl-p-phenylenediamine
- TNBS, Trinitrobenzenesulphonic acid
- TPA, 12-O-Tetradecanoylphorbol-13-acetate
- TPR, Total protein
- TRIG, Triglyceraldehyde
- TRPM8, Transient receptor potential member 8
- Tubulin
- URIC, Uric acid
- WBC, White blood cell
- mTOR, Mammalian target of rapamycin
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Penta-peptide ATN-161 based neutralization mechanism of SARS-CoV-2 spike protein. Biochem Biophys Rep 2021; 28:101170. [PMID: 34778573 PMCID: PMC8578017 DOI: 10.1016/j.bbrep.2021.101170] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 10/25/2021] [Accepted: 11/08/2021] [Indexed: 12/12/2022] Open
Abstract
SARS-CoV-2 has become a big challenge for the scientific community worldwide. SARS-CoV-2 enters into the host cell by the spike protein binding with an ACE2 receptor present on the host cell. Developing safe and effective inhibitor appears an urgent need to interrupt the binding of SARS-CoV-2 spike protein with ACE2 receptor in order to reduce the SARS-CoV-2 infection. We have examined the penta-peptide ATN-161 as potential inhibitor of ACE2 and SARS-CoV-2 spike protein binding, where ATN-161 has been commercially approved for the safety and possess high affinity and specificity towards the receptor binding domain (RBD) of S1 subunit in SARS-CoV-2 spike protein. We carried out experiments and confirmed these phenomena that the virus bindings were indeed minimized. ATN-161 peptide can be used as an inhibitor of protein-protein interaction (PPI) stands as a crucial interaction in biological systems. The molecular docking finding suggests that the binding energy of the ACE2-spike protein complex is reduced in the presence of ATN-161. Protein-protein docking binding energy (-40.50 kcal/mol) of the spike glycoprotein toward the human ACE2 and binding of ATN-161 at their binding interface reduced the biding energy (-26.25 kcal/mol). The finding of this study suggests that ATN-161 peptide can mask the RBD of the spike protein and be considered as a neutralizing candidate by binding with the ACE2 receptor. Peptide-based masking of spike S1 protein (RBD) and its neutralization is a highly promising strategy to prevent virus penetration into the host cell. Thus masking of the RBD leads to the loss of receptor recognition property which can reduce the chance of infection host cells.
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Metformin treatment reverses high fat diet- induced non-alcoholic fatty liver diseases and dyslipidemia by stimulating multiple antioxidant and anti-inflammatory pathways. Biochem Biophys Rep 2021; 28:101168. [PMID: 34825068 PMCID: PMC8605070 DOI: 10.1016/j.bbrep.2021.101168] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 10/18/2021] [Accepted: 11/01/2021] [Indexed: 01/06/2023] Open
Abstract
Purpose This current study investigated the effect of metformin treatment on hepatic oxidative stress and inflammation associated with nonalcoholic fatty liver disease (NADLD) in high fat diet (HFD) fed rats. Method Wistar rats were fed with a HFD or laboratory chow diet for 8 weeks. Metformin was administered orally at a dose of 200 mg/kg. Body weight, food and water intake were recorded on daily basis. Oral glucose tolerance test (OGTT), biochemical analysis and histological examinations were conducted on plasma and tissue samples. Antioxidant and anti-inflammatory mRNA expression was analyzed using reverse transcription polymeric chain reaction (RT-PCR). Results Metformin treatment for 8 weeks prevented HFD-induced weight gain and decreased fat deposition in HFD fed rats. Biochemical analysis revealed that metformin treatment significantly attenuated nitro-oxidative stress markers malondialdehyde (MDA), advanced protein oxidation product (APOP), and excessive nitric oxide (NO) levels in the liver of HFD fed rats. Gene expression analysis demonestrated that metformin treatment was associated with an enhanced expression of antioxidant genes such as Nrf-2, HO-1, SOD and catalase in liver of HFD fed rats. Metformin treatment also found to modulate the expression of fat metabolizing and anti-inflammatory genes including PPAR--γ, C/EBP-α, SREBP1c, FAS, AMPK and GLUT-4. Consistent with the biochemical and gene expression data, the histopathological examination unveiled that metformin treatment attenuated inflammatory cells infiltration, steatosis, hepatocyte necrosis, collagen deposition, and fibrosis in the liver of HFD fed rats. Conclusion In conclusion, this study suggests that metformin might be effective in the prevention and treatment of HFD-induced steatosis by reducing hepatic oxidative stress and inflammation in the liver.
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Key Words
- ALP, alkaline phosphatase
- ALT, alanine aminotransferase
- AMPK, AMP-activated protein kinase
- APOP, advanced protein oxidation product
- AST, aspartate aminotransferase
- ATP, Adinosine triphosphate
- AUC, area under the curve
- CAT, catalase
- FAS, Fatty acid synthase
- HDL, high density lipoprotein
- HF, High fat
- HSCs, Hepatic stellate cells
- IACUC, Institutional Animal Care and Use Committee
- IL-6, interleukin-6
- Inflammation
- LDL, low density lipoprotein
- Lipid peroxidation
- MDA, Malondialdehyde
- MPO, Myeloperoxidase
- Met, Metformin
- Metformin
- NAFLD, nonalcoholic fatty liver disease
- NO, nitric oxide
- Non-alcoholic fatty liver disease
- OGTT, Oral glucose tolerance test
- Obesity
- PBS, Phosphate buffer saline
- PGC-1α, peroxisome proliferator-activated receptor γ coactivator 1
- PPAR-γ, peroxisome proliferator-activated receptor γ
- ROS, reactive oxygen species
- SOD, Superoxide dismutase
- SREBP1c, sterol regulatory element-binding protein 1c
- TBA, Thiobarbituric acid
- TBARS, Thiobarbituric acid reactive substances
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Cryptic amyloidogenic regions in intrinsically disordered proteins: Function and disease association. Comput Struct Biotechnol J 2021; 19:4192-4206. [PMID: 34527192 PMCID: PMC8349759 DOI: 10.1016/j.csbj.2021.07.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/23/2021] [Accepted: 07/23/2021] [Indexed: 11/21/2022] Open
Abstract
The amyloid conformation is considered a fundamental state of proteins and the propensity to populate it a generic property of polypeptides. Multiple proteome-wide analyses addressed the presence of amyloidogenic regions in proteins, nurturing our understanding of their nature and biological implications. However, these analyses focused on highly aggregation-prone and hydrophobic stretches that are only marginally found in intrinsically disordered regions (IDRs). Here, we explore the prevalence of cryptic amyloidogenic regions (CARs) of polar nature in IDRs. CARs are widespread in IDRs and associated with IDPs function, with particular involvement in protein–protein interactions, but their presence is also connected to a risk of malfunction. By exploring this function/malfunction dichotomy, we speculate that ancestral CARs might have evolved into functional interacting regions playing a significant role in protein evolution at the origins of life.
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Key Words
- APR, Aggregation-prone region
- Aggregation
- Amyloid
- CARs, Cryptic amyloidogenic regions
- CD, Circular dichroism
- CR, Congo red
- Evolution
- FTIR, Fourier transform infrared
- IDPs, Intrinsically disordered proteins
- IDRs, Intrinsically disordered regions
- Intrinsically disordered proteins
- PBS, Phosphate buffer saline
- PPI, Protein-protein interactions
- Protein disorder
- Protein–protein interactions
- Rb, Retinoblastoma associated proteins
- RbC, Core region of Rb
- TEM, Transmission electron microscopy
- Th-T, Thioflavin-T
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Nanoparticles of cisplatin augment drug accumulations and inhibit multidrug resistance transporters in human glioblastoma cells. Saudi Pharm J 2021; 29:857-873. [PMID: 34408546 PMCID: PMC8363105 DOI: 10.1016/j.jsps.2021.07.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 07/04/2021] [Indexed: 11/16/2022] Open
Abstract
Background Cisplatin (CSP) is a potent anticancer drug widely used in treating glioblastoma multiforme (GBM). However, CSP's clinical efficacy in GBM contrasted with low therapeutic ratio, toxicity, and multidrug resistance (MDR). Therefore, we have developed a system for the active targeting of cisplatin in GBM via cisplatin loaded polymeric nanoplatforms (CSP-NPs). Methods CSP-NPs were prepared by modified double emulsion and nanoprecipitation techniques. The physiochemical characterizations of CSP-NPs were performed using zeta sizer, scanning electron microscopy (SEM), drug release kinetics, and drug content analysis. Cytotoxicity, induction of apoptosis, and cell cycle-specific activity of CSP-NPs in human GBM cell lines were evaluated by MTT assay, fluorescent microscopy, and flow cytometry. Intracellular drug uptake was gauged by fluorescent imaging and flow cytometry. The potential of CSP-NPs to inhibit MDR transporters were assessed by flow cytometry-based drug efflux assays. Results CSP-NPs have smooth surface properties with discrete particle size with required zeta potential, polydispersity index, drug entrapment efficiency, and drug content. CSP-NPs has demonstrated an ‘initial burst effect’ followed by sustained drug release properties. CSP-NPs imparted dose and time-dependent cytotoxicity and triggered apoptosis in human GBM cells. Interestingly, CSP-NPs significantly increased uptake, internalization, and accumulations of anticancer drugs. Moreover, CSP-NPs significantly reversed the MDR transporters (ABCB1 and ABCG2) in human GBM cells. Conclusion The nanoparticulate system of cisplatin seems to has a promising potential for active targeting of cisplatin as an effective and specific therapeutic for human GBM, thus eliminating current chemotherapy's limitations.
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Key Words
- ABC, ATP-binding cassette
- ANOVA, Analysis of variance
- Active drug targeting
- BBB, Blood brain barrier
- BCRP, Breast cancer resistance protein
- CSP, Cisplatin
- CSP-NPs, Cisplatin nanoparticles DMEM, Dulbecco’s modified eagle medium
- Cisplatin nanoparticles
- DMSO, Dimethyl sulfoxide
- DNR, Daunorubicin
- DOX, Doxorubicin
- Drug uptake and accumulations
- EDTA, Ethylenediaminetetraacetic acid
- EPR, Enhanced permeability retention
- FACS, Fluorescence activated cell sorting
- FBS, Fetal bovine serum
- FTC, Fumitremorgin C
- GBM, Glioblastoma multiforme
- HBSS, Hank’s balanced salt solution
- HPLC, High Performance Liquid Chromatography
- Induction of Apoptosis
- MDR, Multidrug resistance
- MTT, Methyl tetrazolium
- MX, Mitoxantrone
- NPs, Nanoparticles
- O.D., Optical density
- PBS, Phosphate buffer saline
- PI, Propidium iodide
- PLGA, Poly (lactic-co-glycolic) acid
- RT, Room temperature
- Rho-123, Rhodamine 123
- SDS, Sodium dodecyl sulfate
- SEM, Scanning electron microscopy
- Targeting multidrug resistance (MDR) transporters
- nm, Nanometer
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Phagocytosis and the antigen-processing abilities of macrophages derived from monocytes in spinal tuberculosis patients. J Clin Tuberc Other Mycobact Dis 2021; 23:100215. [PMID: 33532629 PMCID: PMC7823046 DOI: 10.1016/j.jctube.2021.100215] [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] [Indexed: 11/23/2022] Open
Abstract
This study examined the hypothesis that there is an impairment of macrophageal function in spinal TB. We examined macrophageal functions in spinal TB patients. Monocytes were isolated from peripheral blood mononuclear cells (PBMCs) of five spinal TB patients and five healthy persons as control. The isolated monocytes were cultured with stimulation of macrophage colony-stimulating factor (M-CSF) for seven days for maturation. The phagocytic ability of the macrophages derived from monocytes was measured. Also, nitric oxide (NO), myeloperoxidase (MPO), beta-glucuronide, and acid phosphatase activity was investigated. We found that the monocytes collected from patient PBMCs were significantly fewer than those of the control group (2992.103 vs. 6474.103 (cells/mL)). There were also fewer macrophages that had adhered to sheep red blood cells (SRBC) (598.103 vs. 264.103 (cells/mL)). However, NO production (2346 vs. 325.17 (µmol/gram of protein)), and the MPO (570.7 vs. 17.4 (unit/mg), beta-glucuronide (0.149 vs. 0.123 (μmol/hour/100 mg of protein)), and acid phosphatase activities (1776.9 vs. 287.9 (μmol/hour/100 mg of protein)) of the macrophages in the spinal TB group were markedly higher than in the healthy group. Despite the low adhesion to foreign bodies, the intracellular processing of TB macrophages, including oxidative activity and lysosome function, was significantly high. These results suggested the impairment of macrophageal function in spinal TB. Possibly, there is a dominance of innate non-specific immunity in spinal TB infection.
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Key Words
- Acid phosphatase
- Beta-glucuronidase
- DOTS, directly observed treatment, short-course
- EDTA, Ethylene diamine tetra acetic acid
- HIV, human immunodeficiency virus
- LPS, lipopolysaccharide
- M-CSF, macrophage colony-stimulating factors
- M.tb, Mycobacterium tuberculosis
- MPO, myeloperoxidase
- Macrophage
- Myeloperoxidase
- NO, nitric oxide
- Nitric oxide
- PBMC, peripheral blood mononuclear cell
- PBS, Phosphate buffer saline
- RPMI, Rosewell Park Memorial Institute culture medium
- SRBC, sheep red blood cell
- Spinal tuberculosis
- TB, tuberculosis
- WHO, the World Health Organization
- WST, water-soluble tetrazolium salt
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Protective effect of piperine in ischemia-reperfusion induced acute kidney injury through inhibition of inflammation and oxidative stress. J Tradit Complement Med 2019; 10:570-576. [PMID: 33134133 PMCID: PMC7588331 DOI: 10.1016/j.jtcme.2019.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 07/12/2019] [Accepted: 07/25/2019] [Indexed: 11/21/2022] Open
Abstract
Background and aim Renal ischemia-reperfusion is associated with inflammation and oxidative stress. As a major compound in black pepper, piperine has anti-inflammatory and anti-oxidative properties. In present study, the protective effects of oral administration of piperine in renal ischemia-reperfusion (IR) induced acute kidney injuries (AKI) were investigated. Experimental procedure Male Wistar rats received piperine (10 or 20 mg/kg.bw) or vehicle for 10 days. The artery and vein of both kidneys were then clamped for 30 min, followed by a 24-h reperfusion period. Concentrations of creatinine and urea-nitrogen in descending aorta blood were measured, and malondialdehyde (MDA) and ferric reducing/antioxidant power (FRAP) levels were measured in kidney tissue to evaluate the oxidative stress. Inflammation was evaluated by measuring the TNF-α and ICAM-1 mRNA expression levels in renal cortical tissue using Real Time PCR method and counting leukocytes infiltration to interstitium. Further measured were tissue damages in H & E stained sections. Results Renal IR reduced FRAP, while increasing the plasma concentrations of creatinine and urea-nitrogen, tissue MDA level, TNF-α and ICAM-1 mRNA expressions, leukocyte infiltration and histopathologic injuries. Piperine administration significantly reduced the plasma concentrations of creatinine and urea-nitrogen, expression of pro-inflammatory factors, oxidative stress and renal histopathologic injuries. It is to be noted that 20 mg/kg dose was more effective. Conclusion Our results suggest piperine protects the kidney against ischemia-reperfusion induced acute kidney injuries by its anti-inflammatory and anti-oxidative properties. Renal ischemia-reperfusion increased the inflammation and oxidative stress parameters. Ischemia-reperfusion increased histopathological damages and functional parameters. Piperine pretreatment significantly reduced the inflammation and oxidative stress. Piperine administration ameliorated renal function and histopathologic damages.
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Key Words
- AKI, Acute kidney injury
- Acute kidney injury
- FRAP, Ferric reducing antioxidant power
- GFR, Glomerular filtration rate
- ICAM-1, Intercellular adhesion molecule-1
- IL-1, Interleukin-1
- IL-6, Interleukin-6
- IR, Ischemia-reperfusion
- Inflammation
- Ischemia-reperfusion
- MDA, Malondialdehyde
- NF-κB, Nuclear factor-κB
- NO, Nitric oxide
- Oxidative stress
- PBS, Phosphate buffer saline
- Piperine
- ROS, Reactive oxygen species
- TNF-α, Tumor necrosis factor-α
- TPTZ, Tripyridyl-s-triazine
- eNOS, Endothelial nitric oxide synthase
- iNOS, Inducible nitric oxide synthase
- qRT-PCR, quantitative real-time PCR
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First study of sperm mediated gene transfer in Egyptian river buffalo. J Genet Eng Biotechnol 2017; 15:475-482. [PMID: 30647689 PMCID: PMC6296624 DOI: 10.1016/j.jgeb.2017.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 05/08/2017] [Accepted: 06/06/2017] [Indexed: 01/13/2023]
Abstract
The present study was carried out to find the best treatments for enhancing the ration of insertion of a desired gene construct (pEGFP-N1) onto the sperm of buffalo as the first step for the production of transgenic buffalo using sperm mediated gene transfer (SMGT). The tested conditions were plasmid DNA concentration, sperm concentration, transfecting agent concentration: Dimethyle sulphoxide (DMSO) and time of transfection. The study proved that the best conditions for producing transgenic embryos were incubation sperm solution its concentration is 107/ml sperm with 3% DMSO: with 20 µg/ml from the linarized DNA, for 15 min at 4 °C are the best conditions to produce transgenic buffalo embryo using sperm mediated gene transfer.
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Key Words
- ANOVA, analysis of variance
- Buffalo embryos
- CCC, covalently closed circular
- COCs, Cumulus oocyte complexes
- DMSO
- DMSO, Dimethyle sulphoxide
- EGFP
- EGFP, enhanced green fluorescent protein
- IVF, in vitro fertilization
- MII, second meiotic division
- OD, optical density
- PBS, Phosphate buffer saline
- SMGT
- SMGT, sperm mediated gene transfer
- TCM199, tissue culture medium
- Transgenic
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Interfacing polymeric scaffolds with primary pancreatic ductal adenocarcinoma cells to develop 3D cancer models. BIOMATTER 2015; 4:e955386. [PMID: 25482337 PMCID: PMC4578550 DOI: 10.4161/21592527.2014.955386] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We analyzed the interactions between human primary cells from pancreatic ductal adenocarcinoma (PDAC) and polymeric scaffolds to develop 3D cancer models useful for mimicking the biology of this tumor. Three scaffold types based on two biocompatible polymeric formulations, such as poly(vinyl alcohol)/gelatin (PVA/G) mixture and poly(ethylene oxide terephthalate)/poly(butylene terephthalate) (PEOT/PBT) copolymer, were obtained via different techniques, namely, emulsion and freeze-drying, compression molding followed by salt leaching, and electrospinning. In this way, primary PDAC cells interfaced with different pore topographies, such as sponge-like pores of different shape and size or nanofiber interspaces. The aim of this study was to investigate the influence played by the scaffold architecture over cancerous cell growth and function. In all scaffolds, primary PDAC cells showed good viability and synthesized tumor-specific metalloproteinases (MMPs) such as MMP-2, and MMP-9. However, only sponge-like pores, obtained via emulsion-based and salt leaching-based techniques allowed for an organized cellular aggregation very similar to the native PDAC morphological structure. Differently, these cell clusters were not observed on PEOT/PBT electrospun scaffolds. MMP-2 and MMP-9, as active enzymes, resulted to be increased in PVA/G and PEOT/PBT sponges, respectively. These findings suggested that spongy scaffolds supported the generation of pancreatic tumor models with enhanced aggressiveness. In conclusion, primary PDAC cells showed diverse behaviors while interacting with different scaffold types that can be potentially exploited to create stage-specific pancreatic cancer models likely to provide new knowledge on the modulation and drug susceptibility of MMPs.
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Key Words
- 2D, Bi-dimensional
- 3D, Three-dimensional
- BCA, Bicinchoninic acid
- BSA, Bovine serum albumin
- Dd, double distilled
- Ds, double stranded
- ECM, Extracellular matrix
- G, Gelatin
- HRP, Horseradish peroxidase
- K-ras, Kirsten rat sarcoma viral oncogene homolog
- MMP, Matrix metalloproteinase
- PBS, Phosphate buffer saline
- PCR, Polymer-chain reaction
- PDAC, Pancreatic ductal adenocarcinoma
- PEOT/PBT, Poly(ethylene oxide terephthalate)/poly(butylene terephthalate)
- PVA, Poly(vinyl alcohol)
- PanIN, Pancreatic intraepithelial neoplasia
- Pancreatic adenocarcinoma
- Smad4, Mothers against decapentaplegic homolog 4
- TME, Tumor microenvironment.
- cancer
- compression molding
- electrospinning
- emulsion and freeze-drying
- metalloproteinase 2 (MMP-2)
- metalloproteinase 9 (MMP-9)
- polyethylene oxide terephthalate (PEOT)
- polyvinyl alcohol (PVA)
- scaffold
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