scholarly journals Análise microbiológica e toxicológica dos extratos brutos secos da Bauhinia Variegata L (pata de vaca) / Microbiological and toxicological analysis of dried raw extracts of Bauhinia Variegata L (cow's foot)

2021 ◽  
Vol 7 (12) ◽  
pp. 110645-110657
Author(s):  
Caroliny Henrique Pereira Da Silva ◽  
Brenda Heloísa Silva ◽  
Gabriela Quirino Alves ◽  
Iran Alves da Silva ◽  
Pedro Arthur Martins Farias ◽  
...  
Keyword(s):  
Toxicological Analysis ◽  
Bauhinia Variegata

scholarly journals Análise microbiológica e toxicológica dos extratos brutos secos da bauhinia variegata l (pata de vaca) / Microbiological and toxicological analysis of dried raw extracts of bauhinia variegata l (cow's foot)

2021 ◽  
Vol 7 (11) ◽  
pp. 102699-102711
Author(s):  
Caroliny Henrique Pereira Da Silva ◽  
Brenda Heloísa Silva ◽  
Gabriela Quirino Alves ◽  
Iran Alves Da Silva ◽  
Pedro Arthur Martins Farias ◽  
...  
Keyword(s):  
Toxicological Analysis ◽  
Bauhinia Variegata

Extraction, isolation and characterization of Bauhinia variegata flower

2020 ◽  
pp. 9-12
Author(s):  
Akanksha Gupta ◽  
Abhishek K Tripathi ◽  
Pushpraj S Gupta
Keyword(s):  
Biological Activities ◽  
Molecular Formula ◽  
Native Plant ◽  
Compound A ◽  
Active Constituents ◽  
Chromatographic Techniques ◽  
Isolation And Characterization ◽  
Soxhlet Apparatus ◽  
Bauhinia Variegata

Background: Bauhinia variegata Linn. is a native plant of Asia and China. B. variegata is found in tropical regions of the world. It belongs to family Leguminosae. It is used for diarrhea, hemorrhoids, constipation, piles, edema, leprosy, wounds, tumors, etc.  Objective: The objective of the present study was to perform extraction of B. variegata flower and isolation of active constituents from the extract. Materials and Methods: The ethanolic extraction of B. variegata flower was performed using the Soxhlet apparatus. The isolation of active constituents from the extract was performed using chromatographic techniques. In column chromatographic studies, n-hexane- [dichloromethane (DCM)] (2:8) was used as an eluting system and further purified through thin layer chromatography (TLC). Compound A and B were isolated through chromatographic techniques, then the molecular formula and characterization of these compounds were carried out with mass and infrared (IR) spectral analysis. Results and Discussion: The percentage yield of B. variegata ethanolic extract (BVE) was found to be 20.8% w/w. The different fractions were F1 having 12.5 grams with n-hexane, F2 (17.1 grams) with CH2Cl2, F3 (21.2 grams) with EtOAc, and F4 (13.4 grams) with EtOH. Compound A and B were isolated from the solvent fractions of n-hexane-DCM (2:8) and EtOAc-DCM (1:9), respectively. The compound A was characterized as 3-hydroxy-6-methoxy-2-phenyl-4H-chromen-4-one. The compound B was characterized as 3-hydroxy-6-methyl-2-phenyl-4H-chromen-4-one. Conclusion: Thus, B. variegata flowers possess active components that need to identify their biological activities.

Biomarkers of Alcohol Consumption in Body Fluids - Possibilities and Limitations of Application in Toxicological Analysis

2019 ◽  
Vol 26 (1) ◽  
pp. 177-196 ◽  
Author(s):  
Mateusz Kacper Woźniak ◽  
Marek Wiergowski ◽  
Jacek Namieśnik ◽  
Marek Biziuk
Keyword(s):  
Alcohol Consumption ◽  
Forensic Toxicology ◽  
Body Fluids ◽  
Ethyl Esters ◽  
Ethyl Glucuronide ◽  
Human Organism ◽  
Analytical Toxicology ◽  
Preparation Methods ◽  
Toxicological Analysis

Background:Ethyl alcohol is the most popular legal drug, but its excessive consumption causes social problems. Despite many public campaigns against alcohol use, car accidents, instances of aggressive behaviour, sexual assaults and deterioration in labor productivity caused by inebriated people is still commonplace. Fast and easy diagnosis of alcohol consumption is required in order to introduce proper and effective therapy, and is crucial in forensic toxicology analysis. The easiest method to prove alcohol intake is determination of ethanol in body fluids or in breath. However, since ethanol is rapidly metabolized in the human organism, only recent consumption can be detected using this method. Because of that, the determination of alcohol biomarkers was introduced for monitoring alcohol consumption over a wider range of time.Objective:The objective of this study was to review published studies focusing on the sample preparation methods and chromatographic or biochemical techniques for the determination of alcohol biomarkers in whole blood, plasma, serum and urine.Methods:An electronic literature search was performed to discuss possibilities and limitations of application of alcohol biomarkers in toxicological analysis.Results:Authors described the markers of alcohol consumption such as: ethanol, its nonoxidative metabolites (ethyl glucuronide, ethyl sulfate, phosphatidylethanol, ethyl phosphate, fatty acid ethyl esters) and oxidative metabolites (acetaldehyde and acetaldehyde adducts). We also discussed issues concerning the detection window of these biomarkers, and possibilities and limitations of their use in routine analytical toxicology for monitoring alcohol consumption or sobriety during alcohol therapy.

Biological and Toxicological Evaluation of N-(4methyl-phenyl)-4-methylphthalimide on Bone Cancer in Mice

2019 ◽  
Vol 19 (5) ◽  
pp. 667-676
Author(s):  
José R. Santin ◽  
Gislaine F. da Silva ◽  
Maria V.D. Pastor ◽  
Milena F. Broering ◽  
Roberta Nunes ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Bone Metastasis ◽  
In Silico ◽  
Bone Matrix ◽  
Micronucleus Assay ◽  
Repeated Treatment ◽  
Toxicological Evaluation ◽  
Toxicological Analysis ◽  
Breast Cancer Bone Metastasis

Background: It was recently demonstrated that the phthalimide N-(4-methyl-phenyl)-4- methylphthalimide (MPMPH-1) has important effects against acute and chronic pain in mice, with a mechanism of action correlated to adenylyl cyclase inhibition. Furthermore, it was also demonstrated that phthalimide derivatives presented antiproliferative and anti-tumor effects. Considering the literature data, the present study evaluated the effects of MPMPH-1 on breast cancer bone metastasis and correlated painful symptom, and provided additional toxicological information about the compound and its possible metabolites. Methods: In silico toxicological analysis was supported by in vitro and in vivo experiments to demonstrate the anti-tumor and anti-hypersensitivity effects of the compound. Results: The data obtained with the in silico toxicological analysis demonstrated that MPMPH-1 has mutagenic potential, with a low to moderate level of confidence. The mutagenicity potential was in vivo confirmed by micronucleus assay. MPMPH-1 treatments in the breast cancer bone metastasis model were able to prevent the osteoclastic resorption of bone matrix. Regarding cartilage, degradation was considerably reduced within the zoledronic acid group, while in MPMPH-1, chondrocyte multiplication was observed in random areas, suggesting bone regeneration. Additionally, the repeated treatment of mice with MPMPH-1 (10 mg/kg, i.p.), once a day for up to 36 days, significantly reduces the hypersensitivity in animals with breast cancer bone metastasis. Conclusion: Together, the data herein obtained show that MPMPH-1 is relatively safe, and significantly control the cancer growth, allied to the reduction in bone reabsorption and stimulation of bone and cartilage regeneration. MPMPH-1 effects may be linked, at least in part, to the ability of the compound to interfere with adenylylcyclase pathway activation.

scholarly journals Histochemistry and immunolocalisation of glucokinin in antidiabetic plants used in traditional Mexican medicine

2017 ◽  
Author(s):  
Guillermo Laguna-Hernández ◽  
Carlos A. Rio-Zamorano ◽  
Itzel G. Meneses-Ochoa ◽  
Alicia E. Brechú-Franco
Keyword(s):  
Medicinal Plants ◽  
Public Health Problem ◽  
Direct Application ◽  
Glucosidase Inhibitors ◽  
Naphthol Blue Black ◽  
Bauhinia Variegata ◽  
Alpha Glucosidase ◽  
Antidiabetic Plants

Mexico is a megadiverse country that has 3,600 to 4,000 species of medicinal plants, of which approximately 800 are used to treat conditions related to diabetes mellitus (DM). DM is a chronic degenerative disease of energy metabolism that exists as two types: type 1 (DM1) and type 2 (DM2). DM is considered a public health problem that affects 7% of the Mexican population older than 20 years. DM is clinically controlled with hypoglycaemic drugs, alpha-glucosidase inhibitors, insulin secretion stimulants or the direct application of insulin. The hypoglycaemic effectiveness of specific molecules has been determined only for some medicinal plants in Mexico used to treat DM2. The presence of molecules called glucokinins, wich are similar to animal insulin molecules, has been reported in some plant species; glucokinins act as both growth factors and regulators of glucose metabolism in plants. Therefore, we hypothesized that the hypoglycaemic effectiveness of some of the popularly used species for the control of DM could be due to the presence of glucokinin, as reported for Bauhinia variegata. The goal of this work was to use histochemistry to detect, the accumulation of protein that is immunocytochemically compatible with glucokinin in slide sections of hypoglycaemic species used as remedies for DM2. The top fourteen most used medicinal plants in Mexico were selected for study via microscopic sections. Proteins were histochemically detected using naphthol blue black and Johansen’s quadruple stain, and the immunocytochemical correspondence of the proteins with glucokinin was investigated using an insulin antibody. All species studied reacted positively to proteins and glucokinin in the same structures. The presence of glucokinin in these structures and the corresponding hypoglycaemic effects are discussed in the contex of the actions of other compounds.

Development and assessment of nanoparticle suspensions as fundament for toxicological analysis

2009 ◽  
Vol 189 ◽  
pp. S185
Author(s):  
Tobias Meißner ◽  
Annegret Potthoff ◽  
Volkmar Richter
Keyword(s):  
Toxicological Analysis ◽  
Nanoparticle Suspensions
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