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1.
Prostaglandins Other Lipid Mediat ; 174: 106866, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-38960027

RESUMO

INTRODUCTION: Inflammation is a fundamental response to various insults, including microbial invasion and tissue injury. While aspirin (ASA) has been widely used for its anti-inflammatory properties, its adverse effects and limitations highlight the need for novel therapeutic alternatives. Recently, a novel salicylic acid derivative, 2-((3-(chloromethyl)benzoyl)oxy)benzoic acid (3-CH2Cl), has emerged as a potential substitute for ASA, offering a simpler, environmentally friendly synthesis and a promising safety profile. AIM OF THE STUDY: This research aims to evaluate the anti-inflammatory mechanism of 3-CH2Cl in a lipopolysaccharide (LPS)-induced mouse model, focusing on its effects on prostaglandin E-2 (PGE-2) concentration, NOX2 and NFkB expression, ROS production, and COX-2 expression. MATERIAL AND METHODS: Utilizing BALB/C mice subjected to LPS-induced inflammation, we investigated the therapeutic potential of 3-CH2Cl. The study included synthesis and tablet preparation, experimental design, peripheral blood plasma PGE-2 measurement, splenocyte isolation and COX-2 expression analysis, nitric oxide and ROS measurement, and immunohistochemical analysis of NOX2 and NFkB expression. RESULTS: 3-CH2Cl significantly reduced PGE-2 levels (p = 0.005), NO concentration in liver homogenates (p = 0.005) and plasma (p = 0.0011), and expression of NOX2 and NFkB in liver (p < 0.0001) and splenocytes (p = 0.0036), demonstrating superior anti-inflammatory activity compared to ASA. Additionally, it showed potential in decreasing COX-2 expression in splenocytes. CONCLUSION: 3-CH2Cl exhibits potent anti-inflammatory properties, outperforming ASA in several key inflammatory markers in an LPS-induced inflammation model. The reduction of COX-2 expression, alongside the reduction of pro-inflammatory cytokines and oxidative stress markers, suggest it as a promising therapeutic agent for various inflammatory conditions.


Assuntos
Ciclo-Oxigenase 2 , Dinoprostona , Lipopolissacarídeos , NADPH Oxidase 2 , NF-kappa B , Espécies Reativas de Oxigênio , Animais , Masculino , Camundongos , Anti-Inflamatórios/farmacologia , Ciclo-Oxigenase 2/metabolismo , Dinoprostona/metabolismo , Dinoprostona/biossíntese , Inflamação/tratamento farmacológico , Inflamação/metabolismo , Inflamação/induzido quimicamente , Inflamação/patologia , Lipopolissacarídeos/farmacologia , Camundongos Endogâmicos BALB C , NADPH Oxidase 2/metabolismo , NF-kappa B/metabolismo , Espécies Reativas de Oxigênio/metabolismo
2.
Vet Med (Praha) ; 68(3): 91-105, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37981903

RESUMO

This study aimed to observe the lingual morphology of the domesticated Asian small-clawed otter, Aonyx cinereus (A. cinereus), from Yogyakarta, Indonesia. Six domesticated A. cinereus adults were obtained from a local otter breeder in Yogyakarta, with no regard to sex. The animals were acclimated to the laboratory for one day, following this, the animals underwent macroscopy identification and scanning electron microscopy (SEM) and light microscopy (LM) analysis. Macroscopically, the tongue of domesticated A. cinereus is divided into three parts: the apex, corpus, and radix. The apex is the shortest part and can move freely. A median groove is bent along the corpus. Typically, the radix contains circumvallate papillae and the epiglottic valleculae. The SEM and LM observations revealed that the lingual morphology of A. cinereus consisted of two types of papillae: mechanical papillae (horny filiform, leaf-like filiform, bifid filiform, trifid filiform, elongated leaf-like filiform, triangular filiform and conical papillae) and gustatory papillae (fungiform and circumvallate papillae). The lingual glands consisted of Weber's glands and von Ebner's glands secreting acid and neutral mucins. Collagen fibres are found in the lamina propria and muscular layer. In conclusion, the papillae of the Asian short-clawed otter have the same structure as those of other Mustelidae family members.

3.
Prostaglandins Other Lipid Mediat ; 154: 106549, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33831580

RESUMO

INTRODUCTION: Salicylic acid derivate is very popular for its activity to suppress pain, fever, and inflammation. One of its derivatives is acetylsalicylic acid (ASA) which has been reported repeatedly that, as a non-steroidal anti-inflammatory drug (NSAID), it has a cardioprotective effect. Although ASA has various advantages, several studies have reported that it may induce severe peptic ulcer disease. We recently synthesized a new compound derived from salicylic acid, namely 2-((3-(chloromethyl)benzoyl)oxy)benzoic acid (3-CH2Cl) which still has the benefit of acetylsalicylic acid as an analgesic and antiplatelet, but lacks its harmful side effects (Caroline et al., 2019). In addition, in silico studies of 3-CH2Cl showed a higher affinity towards protein receptor cyclooxygenase-2 (COX-2; PDB: 5F1A) than ASA. We hypothesized that 3-CH2Cl inhibits the COX-2 activity which could presumably decrease the inflammatory responses. However, no knowledge is available on the anti-inflammatory response and molecular signaling of this new compound. Hence, in this study, we investigated the potential functional relevance of 3-CH2Cl in regulating the inflammatory response in lipopolysaccharide (LPS)-induced rats. The results of this study show that this compound could significantly reduce the inflammatory parameter in LPS-induced rats. MATERIAL AND METHODS: Rats were induced with LPS of 0.5 mg/kg bw intravenously, prior oral administration with vehicle (3% Pulvis Gummi Arabicum / PGA), 500 mg/60 kg body weight (bw; rat dosage converted to human) of 3-CH2Cl and ASA. The inflammatory parameters such as changes in the temperature of septic shock, cardiac blood plasma concentrations of IL-1ß and TNF-α (ELISA), blood inflammation parameters, white blood cell concentrations, and lung histopathology were observed. Meanwhile, the stability of 3-CH2Cl powder was evaluated. RESULT: After the administration of 500 mg/60 kg bw of 3-CH2Cl (rat dosage converted to human) to LPS-induced rats, we observed a significant reduction of both TNF-α (5.70+/-1.04 × 103 pg/mL, p=<0.001) and IL-1ß (2.32+/-0.28 × 103 pg/mL, p=<0.001) cardiac blood plasma concentrations. Besides, we found a reduction of white blood cell concentration and the severity of lung injury in the 3-CH2Cl group compared to the LPS-induced rat group. Additionally, this compound maintained the rat body temperature within normal limits during inflammation, preventing the rats to undergo septic shock, characterized by hypothermic (t = 120 min.) or hyperthermic (t = 360 min) conditions. Furthermore, 3-CH2Cl was found to be stable until 3 years at 25°C with a relative humidity of 75 ± 5%. CONCLUSION: 3-CH2Cl compound inhibited inflammation in the LPS-induced inflammation response model in rats, hypothetically through binding to COX-2, and presumably inhibited LPS-induced NF-κß signaling pathways. This study could be used as a preliminary hint to investigate the target molecular pathways of 3-CH2Cl as a novel and less toxic therapeutical agent in alleviating the COX-related inflammatory diseases, and most importantly to support the planning and development of clinical trial.


Assuntos
Lipopolissacarídeos
4.
Prostaglandins Other Lipid Mediat ; 145: 106364, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31356853

RESUMO

Acetylsalicylic acid is used as a non-steroidal anti-inflammatory drugs (NSAID) and antiplatelet agents by inhibiting cyclooxygenases. However, therapy using acetylsalicylic acid could induce gastric bleeding and cause other gastrointestinal toxicity. The aim of this study was to demonstrate the synthesis of a new compound bearing salicylic acid residue namely 2-((3-(chloromethyl)benzoyl)oxy)benzoic acid, to analyze its potential as a ligand for human cyclooxygenase-2 (COX-2) receptor, to evaluate its toxicity level and its effectiveness for analgesic and antiplatelet agent compared with acetylsalicylic acid. Synthesis of 2-((3-(chloromethyl)benzoyl)oxy)benzoic acid was conducted by microwave irradiation. The purity of this compound was evaluated with TLC, IR, NMR, and EDS spectroscopy. The chemical characterization and docking studies against human COX-2 (PDB:5F1A) was performed in-silico. The acute oral toxicity assay was performed under OECD guidelines. The analgesic activity study was performed by plantar and writhing test on animal model. For anti-platelet activity study, we performed tail-bleeding assay and flow cytometry based platelet aggregation assay. We could successfully synthesize a pure white crystalline 2-((3-(chloromethyl)benzoyl)oxy)benzoic acid. In-Silico G-Score result of those compounds gives us preliminary hint of the potential affinity of this compound as a ligand for COX-2 receptor (PDB: 5F1A). Acute toxicity and microscopic gastrointestinal assessments indicated non-observable harmful toxicity parameters. The plantar response time of 2-((3-(chloromethyl)benzoyl)oxy)benzoic acid treated groups showed a significant increment (P < 0.01), and the nociceptive response in writhing test demonstrated a significant dose-dependent decrement. This indicated that its analgesic activity was better than acetylsalicylic acid. The platelet aggregation of 2-((3-(chloromethyl)benzoyl)oxy)benzoic acid was lower than its controls, indicating an aggregation inhibition pattern. The animals treated with 2-((3-(chloromethyl)benzoyl)oxy)benzoic acid gave a longer bleeding time. Overall, this study demonstrated a successful synthesis of pure 2-((3-(chloromethyl)benzoyl)oxy) benzoic acid. We postulated that this compound was better than acetylsalicylic acid, exhibiting excellent analgesic and antiplatelet activity with no toxicity impact.


Assuntos
Analgésicos , Anti-Inflamatórios não Esteroides , Benzoatos , Choque Séptico/tratamento farmacológico , Analgésicos/química , Analgésicos/uso terapêutico , Animais , Anti-Inflamatórios não Esteroides/química , Anti-Inflamatórios não Esteroides/uso terapêutico , Benzoatos/química , Benzoatos/uso terapêutico , Avaliação de Medicamentos , Humanos
5.
Arterioscler Thromb Vasc Biol ; 36(8): 1517-24, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27283740

RESUMO

OBJECTIVE: Fetal/neonatal alloimmune thrombocytopenia is a severe bleeding disorder, which can result in intracranial hemorrhage (ICH), leading to death or neurological sequelae. In whites, maternal anti-human platelet antigen-1a (HPA-1a) antibodies are responsible for the majority of cases. No predictive factors for ICH are available to guide prophylactic treatment during pregnancy. In this study, we investigated antibodies from mothers with ICH-positive fetal/neonatal alloimmune thrombocytopenia and with ICH-negative fetal/neonatal alloimmune thrombocytopenia to identify serological and functional differences between the groups. APPROACH AND RESULTS: In an antigen capture assay, we observed a stronger binding of +ICH antibodies to endothelial cell (EC)-derived αvß3. By absorption experiments, we subsequently identified anti-HPA-1a antibodies of anti-αvß3 specificity in the +ICH but not in the -ICH cohort. Only the anti-αvß3 subtype, but not the anti-ß3 subtype, induced EC apoptosis of HPA-1a-positive ECs by caspase-3/7 activation, and mediated by reactive oxygen species. In addition, only the anti-αvß3 subtype, but not the anti-ß3 subtype, interfered with EC adhesion to vitronectin and with EC tube formation. CONCLUSIONS: We conclude that the composition of the anti-HPA-1a antibody subtype(s) of the mother may determine whether ICH occurs. Analysis of anti-HPA-1a antibodies of the anti-αvß3 subtype in maternal serum has potential in the diagnostic prediction of ICH development and may allow for modification of prophylactic treatment in fetal/neonatal alloimmune thrombocytopenia.


Assuntos
Autoanticorpos/imunologia , Células Endoteliais/imunologia , Integrina alfaVbeta3/imunologia , Hemorragias Intracranianas/imunologia , Trombocitopenia Neonatal Aloimune/imunologia , Animais , Especificidade de Anticorpos , Antígenos de Plaquetas Humanas/imunologia , Antígenos de Plaquetas Humanas/metabolismo , Apoptose , Autoanticorpos/metabolismo , Células CHO , Estudos de Casos e Controles , Caspase 3/metabolismo , Caspase 7/metabolismo , Adesão Celular , Cricetulus , Células Endoteliais/metabolismo , Células Endoteliais/patologia , Feminino , Idade Gestacional , Células Endoteliais da Veia Umbilical Humana/imunologia , Células Endoteliais da Veia Umbilical Humana/metabolismo , Células Endoteliais da Veia Umbilical Humana/patologia , Humanos , Recém-Nascido , Integrina alfaVbeta3/genética , Integrina alfaVbeta3/metabolismo , Integrina beta3 , Hemorragias Intracranianas/metabolismo , Hemorragias Intracranianas/patologia , Masculino , Troca Materno-Fetal , Neovascularização Fisiológica , Gravidez , Espécies Reativas de Oxigênio/metabolismo , Trombocitopenia Neonatal Aloimune/metabolismo , Trombocitopenia Neonatal Aloimune/patologia , Transfecção
6.
Transfusion ; 55(12): 2920-9, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26388194

RESUMO

BACKGROUND: Fetal and neonatal alloimmune thrombocytopenia (FNAIT) is caused by the destruction of platelets (PLTs) in the fetus or newborn by maternal PLT antibodies that crossed the placenta during pregnancy. STUDY DESIGN AND METHODS: In this study, we aim to elucidate the properties of a new PLT alloantigen (Lap(a)) that is associated with a severe case of FNAIT. Analysis of maternal serum with phenotyped PLTs by monoclonal antibody-specific immobilization of platelet antigens showed positive reaction against PLT glycoprotein (GP)IIb/IIIa and HLA Class I expressed on paternal PLTs. RESULTS: In contrast to GPIIIa-reactive anti-HPA-1a, anti-Lap(a) alloantibodies precipitated predominantly GPIIb. Indeed, a point mutation G>C at Position 2511 located in Exon 25 of the ITGA2B gene was found in Lap(a)-positive donors. This mutation causes an amino exchange Gln>His at Position 806 located in the calf-2 domain of GPIIb. Lap(a)-positive individuals were not found in 300 random blood donors. Our expression study showed that anti-Lap(a) alloantibodies reacted with stable transfected HEK293 cells expressing the mutated GPIIb isoform (His806). CHO cells carrying this isoform, however, failed to react with anti-Lap(a) alloantibodies, indicating that Lap(a) epitopes depend on the Gln806 His mutation and the carbohydrate composition of the GPIIb. This mutation did not hamper the binding of anti-HPA-3a, which recognizes a point mutation (Ile843 Ser) located in calf-2 domain. Finally, we found that Lap(a) and some HPA-3a epitopes are sensitive to O-glycanase. CONCLUSIONS: This study not only underlines the relevance of rare HPAs on the pathomechanism of FNAIT, but also helps to understand the pitfalls of serologic assays to detect anti-GPIIb alloantibodies.


Assuntos
Plaquetas/imunologia , Isoanticorpos/sangue , Isoantígenos/imunologia , Glicoproteína IIb da Membrana de Plaquetas/imunologia , Trombocitopenia Neonatal Aloimune/etiologia , Animais , Antígenos de Plaquetas Humanas/imunologia , Células CHO , Pré-Escolar , Cricetulus , Feminino , Células HEK293 , Humanos , Gravidez , Trombocitopenia Neonatal Aloimune/imunologia
7.
Vet World ; 17(8): 1846-1854, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39328458

RESUMO

The Koi fish (Cyprinus carpio var. koi) is an ornamental fish with a high selling value because of its attractive colors, color patterns, body shape, and swimming motion. Koi fish is extensively traded in the international fish market because of their popularity among hobbyists from numerous countries worldwide. This review discusses various aspects of Koi fish cultivation, including genetic involvement, selective breeding strategies, and management systems. By examining crucial factors such as water parameters, technological innovations, and evolving cultivation methods, this review explored their influence on the quality of Koi fish. Breakthrough technologies, such as ornamental fish warehousing and recirculation aquaculture systems, enhance breeding efficiency and profitability. Molecular sexing, feed optimization, and color enhancement strategies are central to pursuing superior Koi fish. Reproduction management, disease prevention, and risk reduction during transport underscore ongoing efforts to ensure their survival. Despite notable progress, several challenges remain, including limited genetic studies, gaps in disease research, and unexplored herbal alternatives. The active involvement of hobbyists and breeders in research initiatives is a pivotal force in unlocking the untapped potential. The holistic approaches to enhance production efficiency and improve care standards require further exploration, paving the way for a sustainable future in the evolving management of Koi fish cultivation.

8.
J Biomed Mater Res B Appl Biomater ; 112(1): e35341, 2024 01.
Artigo em Inglês | MEDLINE | ID: mdl-37877433

RESUMO

The hydroxyapatite (HAp; Ca10 (PO4 )6 (OH)2 )) has good biocompatibility, bioactivity, and osteoconductivity as a bone implant because the main inorganic mineral of human bone is HAp. The use of scaffold HAp from biogenic resources that contain high calcium and polymer as a pore forming agent to support bone growth is a longstanding area of interest. In this study, porous scaffolds based on HAp were synthesized from sand lobster (SL; Panulirus homarus) shells as a source of calcium using the porogen leaching method with polyethylene oxide (PEO) and chitosan (Chs) as polymeric porogen. The present study aims to synthesize HAp derived from SL shells and evaluate the effect variations of PEO on the physicochemical properties of the scaffold and cytotoxicity in cell viability assay. Briefly, the SL shell powder was calcinated with temperature variations of 600°C, 800°C, and 1000°C for 6 h. Based on the characterization, it was shown that 1000°C was the optimum calcination temperature for SL shells to synthesize HAp using the precipitation method. The characterization results of HAp using energy dispersive x-ray (EDX) revealed that the molar ratio of Ca/P was 1.67. The Fourier transform infrared (FTIR) and x-ray diffractometer (XRD) spectral patterns indicated that HAp had been successfully synthesized with minor ß-tricalcium phosphate (ß-TCP), a calcium phosphate with high biocompatibility. Porous scaffolds were synthesized by varying the concentration of PEO at 0, 5, 10, and 15 wt %. Physicochemical analysis revealed that a higher concentration of PEO affected decreased crystallinity and compressive strength, but on the other hand, the porosity and pore sizes increased. Based on the physicochemical analysis, the synthesized porous scaffold showed that HAp/PEO/Chs 15 wt % had the most potential as a scaffold for biomedical applications. MTT Assay, after 24 h incubation, revealed that the scaffold was safe for use at low concentrations on the MC3T3E1 osteoblast cells, with a percentage of cell viability of 83.23 ± 3.18% at 23.4375 µg/mL. Although the cell viability decreased at higher concentrations, the HAp/PEO/Chs 15 wt % scaffold was cytocompatible with the cells. Thus, in the present study, HAp/PEO/Chs 15 wt % was the best scaffold based on pore structure, chemical composition, mechanical and crystalographic properties and cell viability.


Assuntos
Quitosana , Palinuridae , Animais , Humanos , Engenharia Tecidual/métodos , Durapatita/farmacologia , Durapatita/química , Quitosana/química , Porosidade , Alicerces Teciduais/química , Nephropidae , Areia , Polietilenoglicóis , Cálcio , Polímeros , Materiais Biocompatíveis/química
9.
RSC Adv ; 14(12): 8222-8239, 2024 Mar 06.
Artigo em Inglês | MEDLINE | ID: mdl-38469192

RESUMO

Healing of significant segmental bone defects remains a challenge, and various studies attempt to make materials that mimic bone structures and have biocompatibility, bioactivity, biodegradability, and osteoconductivity to native bone tissues. In this work, a nanofiber scaffold membrane of polyvinyl alcohol (PVA)/polyvinylpyrrolidone (PVP)/chitosan (CS) combined with hydroxyapatite (HAp) from sand lobster (SL; Panulirus homarus) shells, as a calcium source, was successfully synthesized to mimic the nanoscale extracellular matrix (ECM) in the native bone. The HAp from SL shells was synthesized by co-precipitation method with Ca/P of 1.67 and incorporated into the nanofiber membrane PVA/PVP/CS synthesized by the electrospinning method with varying concentrations, i.e. 0, 1, 3, and 5% (w/v). Based on the morphological and physicochemical analysis, the addition of HAp into the nanofiber successfully showed incorporation into the nanofiber with small agglomeration at HAp concentrations of 1, 3, and 5% (w/v). This led to a smaller fiber diameter with higher concentration of Hap, and incorporating HAp into the nanofiber could improve the mechanical properties of the nanofiber closer to the trabecula bone. Moreover, in general, swelling due to water absorption increases due to higher hydrophilicity at higher HAp concentrations and leads to the improvement of the degradation process and protein adsorption of the nanofiber. Biomineralization in a simulated body fluid (SBF) solution confirms that the HAp in the nanofiber increases bioactivity, and it can be seen that more apatite is formed during longer immersion in the SBF solution. The nanofiber PVA/PVP/CS HAp 5% has the most potential for osteoblast (MC3T3E1) cell viability after being incubated for 24 h, and it allowed the cell to attach and proliferate. Additionally, the higher HAp concentration in the nanofiber scaffold membrane can significantly promote the osteogenic differentiation of MC3T3E1 cells. Overall, the PVA/PVP/CS/HAp 5% nanofiber scaffold membrane has the most potential for bone tissue engineering.

10.
Mol Metab ; : 102044, 2024 Oct 04.
Artigo em Inglês | MEDLINE | ID: mdl-39368612

RESUMO

Cancer is a disease characterized by the acquisition of a multitude of unique traits. It has long been understood that cancer cells divert significantly from normal cell metabolism. The most obvious of metabolic changes is that cancer cells strongly rely on glucose conversion by aerobic glycolysis. In addition, they also regularly develop mechanisms to use lipids and fatty acids for their energy needs. Peroxisomes lie central to these adaptive changes of lipid metabolism. Peroxisomes are metabolic organelles that take part in over 50 enzymatic reactions crucial for cellular functioning. Thus, they are essential for an effective and comprehensive use of lipids' energy supplied to cells. Cancer cells display a substantial increase in the biogenesis of peroxisomes and an increased expression of proteins necessary for the enzymatic functions provided by peroxisomes. Moreover, the enzymatic conversion of FAs in peroxisomes is a significant source of reactive oxygen and nitrogen species (ROS/RNS) that strongly impact cancer malignancy. Important regulators in peroxisomal FA oxidation and ROS/RNS generation are the transcription factors of the peroxisome proliferator-activated receptor (PPAR) family. This review describes the metabolic changes in tumorigenesis and cancer progression influenced by peroxisomes. We will highlight the ambivalent role that peroxisomes and PPARs play in the different stages of tumor development and summarize our current understanding of how to capitalize on the comprehension of peroxisomal biology for cancer treatment.

11.
Open Vet J ; 14(8): 1761-1770, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39308716

RESUMO

Background: Diabetes is a degenerative disease associated with metabolic disorders. The majority of people have type 2 diabetes mellitus (DM) insulin resistance due to an unhealthy lifestyle. The development of DM treatment is also growing, one of which is using conditioned medium. Aim: This study aims to determine the effect of Bovine umbilical mesenchymal stem cell-conditioned medium (BUMSC-CM) on nicotinamide (NA) and streptozotocin (STZ) induced rats as an animal model of DM. Methods: The study began with the in vitro docking of Cholecalciferol with aldolase reductase and glucokinase. In the in vivo study, animal models were divided into five groups: group A (negative control), group B (diabetic rats), group C (NA+STZ+Metformin), group D (NA+STZ+ BUMSC-CM 0.2 ml/kg BW), and group E (NA+STZ+ BUMSC-CM 0.5 ml/kg BW). Blood sugar levels were checked, and BUMSC-CM was administered by intramuscular injection at four-day intervals for a duration of 16 days. Blood sugar levels were also sampled, and GLUT4 histochemical and immunohistochemical staining was performed. Results: The results showed that Cholecalciferol can bind to aldolase reductase ASP43 and TYR48 and bind to glucokinase at TYR214 with hydrogen bonds. BUMSC-CM administration was able to reduce blood sugar well. In addition, BUMSC-CM also helped repair the tissue structure of the pancreas damaged by inflammation from STZ administration. Conclusion: This study can be concluded that the administration of BUMSC-CM can be an alternative cell-free therapy for patients with DM.


Assuntos
Diabetes Mellitus Experimental , Transportador de Glucose Tipo 4 , Células-Tronco Mesenquimais , Niacinamida , Estreptozocina , Animais , Diabetes Mellitus Experimental/metabolismo , Diabetes Mellitus Experimental/induzido quimicamente , Niacinamida/farmacologia , Niacinamida/administração & dosagem , Ratos , Células-Tronco Mesenquimais/efeitos dos fármacos , Bovinos , Meios de Cultivo Condicionados/farmacologia , Transportador de Glucose Tipo 4/metabolismo , Masculino , Pâncreas/efeitos dos fármacos , Pâncreas/patologia , Ratos Wistar
12.
Tissue Eng Part B Rev ; 30(1): 82-96, 2024 02.
Artigo em Inglês | MEDLINE | ID: mdl-37597193

RESUMO

Respiratory infections caused by coronaviruses (CoVs) have become a major public health concern in the past two decades as revealed by the emergence of SARS-CoV in 2002, MERS-CoV in 2012, and SARS-CoV-2 in 2019. The most severe clinical phenotypes commonly arise from exacerbation of immune response following the infection of alveolar epithelial cells localized at the pulmonary blood-air barrier. Preclinical rodent models do not adequately represent the essential genetic properties of the barrier, thus necessitating the use of humanized transgenic models. However, existing monolayer cell culture models have so far been unable to mimic the complex lung microenvironment. In this respect, air-liquid interface models, tissue engineered models, and organ-on-a-chip systems, which aim to better imitate the infection site microenvironment and microphysiology, are being developed to replace the commonly used monolayer cell culture models, and their use is becoming more widespread every day. On the contrary, studies on the development of nanoparticles (NPs) that mimic respiratory viruses, and those NPs used in therapy are progressing rapidly. The first part of this review describes in vitro models that mimic the blood-air barrier, the tissue interface that plays a central role in COVID-19 progression. In the second part of the review, NPs mimicking the virus and/or designed to carry therapeutic agents are explained and exemplified.


Assuntos
COVID-19 , Coronavírus da Síndrome Respiratória do Oriente Médio , Nanopartículas , Humanos , SARS-CoV-2 , Barreira Alveolocapilar
13.
Int J Genomics ; 2023: 4961487, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36793931

RESUMO

Air pollution is one of the significant environmental risks known as the cause of premature deaths. It has deleterious effects on human health, including deteriorating respiratory, cardiovascular, nervous, and endocrine functions. Exposure to air pollution stimulates reactive oxygen species (ROS) production in the body, which can further cause oxidative stress. Antioxidant enzymes, such as glutathione S-transferase mu 1 (GSTM1), are essential to prevent oxidative stress development by neutralizing excess oxidants. When the antioxidant enzyme function is lacking, ROS can accumulate and, thus, cause oxidative stress. Genetic variation studies from different countries show that GSTM1 null genotype dominates the GSTM1 genotype in the population. However, the impact of the GSTM1 null genotype in modifying the association between air pollution and health problem is not yet clear. This study will elaborate on GSTM1's null genotype role in modifying the relationship between air pollution and health problems.

14.
Food Sci Anim Resour ; 43(1): 170-183, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36789203

RESUMO

This study evaluated the effects of milk fermented with Pediococcus acidilactici strain BE and Pediococcus pentosaceus strain M103 on diabetes in rats (Rattus norvegicus). The bacteria were separately used as starter cultures for milk fermentation, and the products were then fed to diabetic rats for 15 days. Blood glucose levels, immunohistochemical and histological indicators, lipid profiles, and total lactic acid bacterium counts were evaluated before and after treatment. The administration of milk fermented with P. acidilactici strain BE reduced blood glucose levels from 410.27±51.60 to 304.07±9.88 mg/dL (p<0.05), similar to the effects of metformin (from 382.30±13.39 mg/dL to 253.33±40.66 mg/dL, p<0.05). Increased insulin production was observed in diabetic rats fed milk fermented with P. acidilactici strain BE concomitant with an increased number and percentage area of immunoreactive beta-cells. The structure of insulin-producing beta-cells was improved in diabetic rats fed milk fermented with P. acidilactici strain BE or metformin (insulin receptor substrate scores of 5.33±0.94 and 3.5±0.5, respectively). This suggests that the administration of milk fermented with P. acidilactici BE potentially reduces blood glucose levels and improves pancreatic beta-cell function in diabetic rats.

15.
ACS Omega ; 8(1): 42-47, 2023 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-36643478

RESUMO

Salicylic acid (SA) derivate is well-known for its anti-inflammatory and analgesic activity through cyclooxygenase (COX)-inhibition. Previous studies pointed toward gastric toxicity induced by most salicylic acid derivative compounds, particularly acetylsalicylic acid (ASA). Despite the adverse effect, ASA is still used due to price affordability and additional advantages in preventing platelet aggregation. Recently, a novel salicylic acid derivative called 2-((3 (chloromethyl)benzoyl)oxy)benzoic acid (3-CH2Cl) was introduced as a potential alternative compound to substitute ASA. Preliminary assessment results of COX-2 specificity, toxicity profile, analgesic, anti-inflammatory, and antiplatelet activity have made 3-CH2Cl a promising compound for "new" drug development. This review focuses on the discovery, potential activity, and benefits of 3-CH2Cl and the possible molecular mechanisms of its regulations in health and disease. Thus, this review may prove to be beneficial for the utilization of 3-CH2Cl as a potential alternative drug to substitute ASA.

16.
Open Vet J ; 13(12): 1504-1516, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38292722

RESUMO

In treating brain diseases, such as canine cognitive dysfunction (CCD), most currently available potent drugs have weak therapeutic efficacy. One of the causes is the inability of the substance to reach the brain in therapeutic quantities. These pharmaceuticals lacked targeted mechanisms for drug delivery, coming about in an elevated drug concentration in imperative organs, which drove to drug harmfulness. In recent years, cell-free treatment (conditioned medium) determined from animal and human stem cells has provided new promise for treating brain diseases, as CM can stimulate the regeneration of neurons and prevent the inflammation and apoptotic of neurons caused by pathology or aging. On the other hand, it is well known that chitosan-hydrogel (CH) is a polymer derived from natural sources. It has been authorized for use in biomedical use because of its uncommon biodegradability, biocompatibility, and mucoadhesive properties. CH modification has been utilized to generate nanoparticles (NPs) for intranasal and intravenous brain targeting. NPs shown upgraded drug take-up to the brain with decreased side impacts due to their drawn out contact time with the nasal mucosa, surface charge, nanosize, and capacity to extend the tight intersections inside the mucosa. Due to the aforementioned distinctive characteristics, developing Chitosan Hydrogel Nanoparticles load with bovine umbilical mesenchymal stem cell conditioned medium is crucial as a new therapeutic strategy for CCD.


Assuntos
Doença de Alzheimer , Doenças dos Bovinos , Quitosana , Disfunção Cognitiva , Doenças do Cão , Células-Tronco Mesenquimais , Nanopartículas , Drogas Veterinárias , Animais , Humanos , Bovinos , Cães , Hidrogéis/metabolismo , Hidrogéis/farmacologia , Hidrogéis/uso terapêutico , Quitosana/uso terapêutico , Quitosana/metabolismo , Quitosana/farmacologia , Meios de Cultivo Condicionados/farmacologia , Meios de Cultivo Condicionados/metabolismo , Doença de Alzheimer/tratamento farmacológico , Doença de Alzheimer/metabolismo , Doença de Alzheimer/veterinária , Drogas Veterinárias/metabolismo , Drogas Veterinárias/farmacologia , Drogas Veterinárias/uso terapêutico , Disfunção Cognitiva/terapia , Nanopartículas/uso terapêutico , Doenças do Cão/metabolismo
17.
Clin Exp Vaccine Res ; 11(3): 235-248, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-36451668

RESUMO

Currently, mucosal infectious diseases are still a very high global health burden, but there are few effective vaccines to prevent mucosal-borne diseases. The development of mucosal vaccines requires the selection of appropriate antigens, delivery system strategies, and adjuvants to increase vaccine efficacy but limited studies have been conducted. The aim of this review is to describe the mucosal immune system, as well as the potential for the development of vaccines and mucosal adjuvants, and their challenges. The study was conducted by applying inclusion criteria for the articles, and a review was conducted by two readers with the agreement. It was known that mucosal vaccination is a potential route to be applied in future preventive efforts through vaccination. However, limited studies have been conducted so far and limited mucosal vaccination has been approved. New technological approaches such as material development involving nano- and micro-patterning are important to intensively open and investigate the potential area of development to provide better vaccination methods.

18.
Data Brief ; 40: 107774, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-35036482

RESUMO

Holy basil (Ocimum sanctum Linn) or known also as "kemangi" in Indonesia is a plant commonly used as a herb in Asian countries. It is also medicinal with antipyretic, anti-inflammatory, anti-cancer, and neuroprotective properties. This dataset article provides broad screening of the phytochemical component of Ocimum sanctum ethanolic extract (EEOS) as well as a secondary metabolite profile of EEOS. Analyses were done qualitatively and quantitatively using a combination of spectrophotometer, thin layer chromatography, Fourier transform infrared spectroscopy (FTIR), and 1H-nuclear magnetic resonance (1H-NMR). Results showed that Ocimum sanctum ethanolic extract contains phytochemical compounds, including flavonoids, phenols, tannins, saponins, alkaloids, steroids, and terpenoids. In addition, a secondary metabolite was found and classified into metabolite groups including alcohol, amine, carboxylic acid, alkane, alkene, aldehyde, phenol, ether, sulfur, halogen, benzene, nitrogen, sterol, amino acid, carbohydrate, and nitrogen.

19.
Diabetes Metab Syndr ; 16(1): 102354, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34920203

RESUMO

BACKGROUND AND AIMS: High-performance (HP) inulin, a dietary fiber consists of more than 10 fructose polymers, have been shown to reduce post-prandial glycaemic response (PPGR) and could prevent the occurrence of Type-2 diabetes mellitus (T2DM). Currently, there are no data on whether pre-meal HP inulin supplementation could decrease PPGR. METHODS: 8 healthy adults consumed 20 g of formula that contain 60.2% inulin (w/w) dissolved in water. Blood glucose was measured in fasted participants and at 30-120 min after starting to eat a prepared meal. This test was repeated every week with different supplement formulas. CONCLUSION: pre-meal HP Inulin formula supplementation could suppress the post-prandial glycaemic response.


Assuntos
Inulina , Período Pós-Prandial , Adulto , Glicemia , Suplementos Nutricionais , Voluntários Saudáveis , Humanos , Insulina , Inulina/uso terapêutico , Período Pós-Prandial/fisiologia
20.
Vet World ; 15(6): 1583-1588, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35993063

RESUMO

Background and Aim: Breast cancer is the most common type of cancer in women because it attacks the productive age. Preliminary studies showed that lactic acid bacteria (LAB) strain SR6 from the Bali cattle colon has the potential to act as a superior probiotic. It is also assumed that its bacteriocin structure is specific and has a strong relationship with the specificity of the ligand and its biological activity at a receptor. Therefore, this study aims to assess the use of local LAB strains, which produce bacteriocins as anticancer agents, as well as to identify the bacteria as potent producers molecularly. Materials and Methods: The study was initiated by cultivating LAB SR6 strain from stock isolates on De Man, Rogosa, and Sharpe (Oxoid, CM 0369, England) broth media. It was then confirmed molecularly through analysis of the 16S ribosomal ribonucleic acid gene. Subsequently, its anticancer activity was tested by assessing the cytotoxic activity in T47D cell culture using the 3-(4, 5 dimetiltiazol-2-yl)-2.5-diphenyl tetrazolium bromide (Invitrogen M6494, US) method. Results: The results showed that the LAB strain SR6 was identified molecularly as Pediococcus pentosaceus. Furthermore, it had a toxic effect on T47D cells, which was indicated by the number of deaths after treatment with the extracellular protein of the strain, especially at the 50% total cell volume level. Conclusion: Based on the toxic effect of the strain on human T47D cells, the LAB SR6 isolate, which was identified as P. pentosaceus has the potential to be developed as a good anticancer drug against breast cancer. However, there is a need to carry out an integrated study to fully explore the suitability of bacteriocins as in vivo therapeutics against the disease completely.

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