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https://www.readbyqxmd.com/read/28822157/-the-analysis-of-multivariate-image-and-chemometrics-in-tlc-fingerprinting-of-artificial-cow-bezoar
#1
Ling-Wen Yao, Yan Shi, Dong-Mei Sun, Xian-Long Cheng, Feng Wei, Shuang-Cheng Ma
A method of thin-layer fingerprinting chromatogram of artificial cow-bezoar was established with the developing solvent consisting of cyclohexane, ethyl acetate, acetic acid and methanol (2∶7∶1∶2), and 10% sulfuric acid ethanol solution sprayed as colour-developing agent. After heated at 105 ℃, TLC was recorded as an image in ultraviolet light at 366 nm which was converted into grayscale. By the gray value extracted from the grayscale, the multivariate data obtained from TLC of samples could be analyzed by chemometric method...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28821789/isolation-characterization-and-toxicological-potential-of-alternaria-mycotoxins-tea-aoh-and-ame-in-different-alternaria-species-from-various-regions-of-india
#2
Mukesh Meena, Prashant Swapnil, R S Upadhyay
Alternaria species produce various sorts of toxic metabolites during their active growth and causes severe diseases in many plants by limiting their productivity. These toxic metabolites incorporate various mycotoxins comprising of dibenzo-α-pyrone and some tetramic acid derivatives. In this study, we have screened out total 48 isolates of Alternaria from different plants belonging to different locations in India, on the basis of their pathogenic nature. Pathogenicity testing of these 48 strains on susceptible tomato variety (CO-3) showed 27...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819568/nebivolol-attenuates-neutrophil-lymphocyte-ratio-a-marker-of-subclinical-inflammation-in-hypertensive-patients
#3
Mazhar Hussain, Muhammad Saeed, Muhammad Zafar Majeed Babar, Moazzam Ali Atif, Lubna Akhtar
BACKGROUND: High value of neutrophil lymphocyte ratio (NLR) is a strong independent predictor and biomarker of ongoing vascular inflammation in various cardiovascular disorders. OBJECTIVE: The main focus of the study is to investigate the effect of nebivolol on NLR in mild to moderate hypertensive patients in comparison with metoprolol. In addition, BMI, blood pressure, TLC count, blood sugar, and lipid profile were also assayed before and after treatment. MATERIALS AND METHODS: In this 12-week prospective double-blinded randomized study, 120 patients with mild to moderate hypertension were randomly divided into two groups to prescribed daily dose of tab nebivolol 5-10 mg and metoprolol 50-100 mg, respectively, for 12 weeks...
2017: International Journal of Hypertension
https://www.readbyqxmd.com/read/28808394/antiproliferative-activity-of-haematoxylum-brasiletto-h-karst
#4
J Bello-Martínez, M Jiménez-Estrada, J L Rosas-Acevedo, L P Avila-Caballero, M Vidal-Gutierrez, C Patiño-Morales, E Ortiz-Sánchez, R E Robles-Zepeda
BACKGROUND: Haematoxylum brasiletto is a tree that grows in Central America, commonly known as "Palo de Brasil," which is used in the traditional medicine for the treatment of cancer and gastric ulcers. OBJECTIVE: The aim of this study was to isolate the compounds responsible for antiproliferative activity of H. brasiletto. MATERIALS AND METHODS: A bioassay-guided fractionation of ethanol extract of H. brasiletto was performed using 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide cell proliferation assay to measure the antiproliferative activity on six human cancer cell lines (A549, LS180, HeLa, SiHa, MDA-MB-231, and NCI-H1299) and one human noncancer cell line (ARPE-19)...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28808383/chemopreventive-potential-of-major-flavonoid-compound-of-methanolic-bark-extract-of-saraca-asoca-roxb-in-benzene-induced-toxicity-of-acute-myeloid-leukemia-mice
#5
Manas Kumar Mukhopadhyay, Mithun Shaw, Debjani Nath
BACKGROUND: Saraca asoca (SA) (Roxb.) is one of the folk medicinal plants found in India, Bangladesh, and Sri Lanka. Its major biological activity appears due to the presence of flavonoid group of compounds in its bark extract. OBJECTIVE: In this study, our research aims to analyze the chemopreventive effect of flavonoids, especially a natural phenol catechin present in the bark methanolic extract of SA on acute myeloid leukemia (AML) mice. MATERIALS AND METHODS: The total bark extract was partitioned and analyzed on thin-layer chromatography (TLC) plate...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28808378/rutamarin-an-active-constituent-from-ruta-angustifolia-pers-induced-apoptotic-cell-death-in-the-ht29-colon-adenocarcinoma-cell-line
#6
Shafinah Ahmad Suhaimi, Sok Lai Hong, Sri Nurestri Abdul Malek
BACKGROUND: Ruta angustifolia Pers. is a perennial herb that is cultivated worldwide, including Southeast Asia, for the treatment of various diseases as traditional medicine. OBJECTIVE: The purpose of the study was to identify an active principle of R. angustifolia and to investigate its effect on the HT29 cell death. MATERIALS AND METHODS: The methanol and fractionated extracts (hexane, chloroform, ethyl acetate, and water) of R. angustifolia Pers...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28803650/lipid-determination-in-bone-marrow-and-mineralized-bone-tissue-from-sample-preparation-to-improved-high-performance-thin-layer-and-liquid-chromatographic-approaches
#7
Alexandrine During
In view of their key roles in the bone physiology (e.g., in the biomineralization process) and their potential implication in bone pathologies, an approach to study lipids in situ is needed. The aim of the present paper is to propose an original procedure to characterize lipids in both bone marrow (BM) and mineralized tissue (MT) compartments, taking into consideration sample preparation, lipid extraction and analytical issues, when using small sample size (≤ 0.5g of rat femurs). The potential contamination of the MT by marrow lipids and the poor accessibility of certain lipids from the MT - two major issues in bone handling - were taking care, respectively by performing two cleaning steps after BM removal and by adding a demineralization step to the overall lipid extraction protocol...
August 3, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28800757/anthelminthic-properties-of-methylene-chloride-methanol-1-1-extracts-of-two-cameroonians-medicinal-plants-on-heligmosomoides-bakeri-nematoda-heligmosomatidea
#8
Sergine Errole Ngouateu Teufack, Gertrude NMbogning Tayo, Marc Ngangout Alidou, Jeannette Yondo, Amely Frankline Djiomene, Josué Wabo Poné, Faùily Mpoame Mbida
BACKGROUND: The resistance of some medico-veterinary parasite strains as well as the unavailability and toxicity of synthetic anthelminthics on humans, animals and the impacts of their residues in the environment have pushed scientists to turn to plants with anthelminthic properties. Hence, the aim of this work was to contribute to the fight against helminths of medical and veterinary importance in general, and also to clear the environment of their free living stages. METHODS: Fresh eggs of Heligmosomoides bakeri were obtained from the faeces of experimentally infected mice...
August 11, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28798884/spe-tlc-densitometric-quantification-of-selected-synthetic-food-dyes-in-liquid-foodstuffs-and-pharmaceutical-preparations
#9
Anna W Sobańska, Jarosław Pyzowski, Elżbieta Brzezińska
Selected synthetic food dyes (tartrazine, Ponceau 4R, Brilliant Blue, orange yellow, and azorubine) were isolated from liquid preparations (mouthwashes and beverages) by Solid Phase Extraction on aminopropyl-bonded silica with diluted aqueous sodium hydroxide as an eluent. The extraction step was followed by thin layer chromatography on silica gel 60 with chloroform-isopropanol-25% aq. ammonia 1 : 3 : 1 (v/v/v) as mobile phase and the densitometric quantification of dyes was achieved using quadratic calibration plots (R(2) > 0...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/28798032/improved-estrogen-receptor-assessment-by-pet-using-the-novel-radiotracer-4fmfes-in-er-breast-cancer-patients-an-ongoing-phase-ii-clinical-trial
#10
Michel Paquette, Éric Lavallée, Serge Phoenix, René Ouellet, Helena Senta, Johan E van Lier, Brigitte Guérin, Roger Lecomte, Éric E Turcotte
Following encouraging preclinical and human dosimetry results for the novel estrogen receptor (ER) positron emission tomography (PET) radiotracer 4-fluoro-11β-methoxy-16α-[(18)F]fluoroestradiol (4FMFES), a phase II clinical trial was initiated to compare the PET imaging diagnostic potential of 4FMFES to 16α-[(18)F]fluoroestradiol (FES) in ER positive (ER+) breast cancer patients. Methods: Patients diagnosed with ER+ breast cancer (n = 31) were recruited for this study, including six patients that undertook mastectomy and/or axillary node dissection...
August 10, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28793908/transcriptomic-analysis-comparing-mouse-strains-with-extreme-total-lung-capacities-identifies-novel-candidate-genes-for-pulmonary-function
#11
Leema George, Ankita Mitra, Tania A Thimraj, Martin Irmler, Sangeetha Vishweswaraiah, Lars Lunding, Dorothea Hühn, Alicia Madurga, Johannes Beckers, Heinz Fehrenbach, Swapna Upadhyay, Holger Schulz, George D Leikauf, Koustav Ganguly
BACKGROUND: Failure to attain peak lung function by early adulthood is a risk factor for chronic lung diseases. Previously, we reported that C3H/HeJ mice have about twice total lung capacity (TLC) compared to JF1/MsJ mice. We identified seven lung function quantitative trait loci (QTL: Lfnq1-Lfnq7) in backcross/intercross mice derived from these inbred strains. We further demonstrated, superoxide dismutase 3, extracellular (Sod3), Kit oncogene (Kit) and secreted phosphoprotein 1 (Spp1) located on these Lfnqs as lung function determinants...
August 9, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28782421/epidemiologic-survey-of-feline-leukemia-virus-in-domestic-cats-on-tsushima-island-japan-management-strategy-for-tsushima-leopard-cats
#12
Isaac Makundi, Yushi Koshida, Kyohei Kuse, Takahiro Hiratsuka, Jumpei Ito, Takuya Baba, Shinya Watanabe, Maki Kawamura, Yuka Odahara, Ariko Miyake, Hanae Yamamoto, Sawako Kuniyoshi, Manabu Onuma, Kazuo Nishigaki
The Tsushima leopard cat (TLC) Prionailurus bengalensis euptilurus, a subspecies of P. bengalensis, is designated a National Natural Monument of Japan, and lives only on Tsushima Island, Nagasaki Prefecture, Japan. TLCs are threatened by various infectious diseases. Feline leukemia virus (FeLV) causes a serious infectious disease with a poor prognosis in cats. Therefore, the transmission of FeLV from Tsushima domestic cats (TDCs) to TLCs may threaten the TLC population. We investigated the FeLV infection status of both TDCs and TLCs on Tsushima Island by screening blood samples for FeLV p27 antigen and using PCR to amplify the full-length FeLV env gene...
August 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28780444/tissue-specific-distribution-and-maternal-transfer-of-polybrominated-diphenyl-ethers-pbdes-and-their-metabolites-in-adult-common-sole-solea-solea-l-over-an-entire-reproduction-cycle
#13
C Munschy, N Bely, K Héas-Moisan, N Olivier, V Loizeau
Tissue-specific accumulation and distribution of polybrominated diphenyl ethers (PBDEs) and their debrominated metabolites were studied in common sole (Solea solea) over an entire reproduction cycle. The fish were dietary-exposed to selected PBDEs in laboratory-controlled conditions for one year. Fish of both sexes were sampled throughout the reproduction cycle and their muscle, liver, viscera, carcass, skin and gonads (female) were analysed for total lipid content, PBDEs and their debrominated metabolites...
August 3, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28780417/purification-characterization-and-antioxidant-properties-of-a-novel-polysaccharide-extracted-from-sorghum-bicolor-l-seeds-in-sausage
#14
Sirine Ben Slima, Naourez Ktari, Imen Trabelsi, Hafedh Moussa, Iskandar Makni, Riadh Ben Salah
A novel polysaccharide named Sorghum Water-Soluble Polysaccharide (SWSP) was purified from Sorghum bicolor (L.) seeds. It was structurally characterized by high performance liquid chromatography (HPLC), thin layer chromatography (TLC), Fourier transform-infrared spectroscopy analysis (FT-IR), X-ray diffraction (XRD) and mass spectroscopy (MS). HPLC and TLC showed that SWSP is a glucose polymer. The FT-IR spectrum proved the polysaccharide characteristic band of SWSP. XRD and microscopy analyses revealed that SWSP is a semi-crystalline polymer...
August 3, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28776774/identification-of-some-bioactive-metabolites-in-a-fractionated-methanol-extract-from-ipomoea-aquatica-aerial-parts-through-tlc-hplc-uplc-esi-qtof-ms-and-lc-spe-nmr-fingerprints-analyses
#15
Mahmoud Hefny Gad, Emmy Tuenter, Nagwa El-Sawi, Sabry Younes, El-Mewafy El-Ghadban, Kristiaan Demeyer, Luc Pieters, Yvan Vander Heyden, Debby Mangelings
INTRODUCTION: The plant species Ipomoea aquatica contains various bioactive constituents, e.g. phenols and flavonoids, which have several medical uses. All previous studies were executed in Asia; however, no reports are available from Africa, and the secondary metabolites of this plant species from Africa are still unknown. OBJECTIVE: The present study aims finding suitable conditions to identify the bioactive compounds from different fractions. METHODOLOGY: Chromatographic fingerprint profiles of different fractions were developed using high-performance liquid chromatography (HPLC) and then these conditions were transferred to thin-layer chromatography (TLC)...
August 4, 2017: Phytochemical Analysis: PCA
https://www.readbyqxmd.com/read/28776709/allergic-contact-dermatitis-caused-by-dimethylthiocarbamylbenzothiazole-sulfide-dmtbs-in-canvas-shoes-in-search-of-the-culprit-allergen
#16
Marie L Schuttelaar, Joost M Meijer, Malin Engfeldt, Hilde Lapeere, An Goossens, Magnus Bruze, Christina Persson, Ola Bergendorff
BACKGROUND: During rubber vulcanization, new compounds can be formed. OBJECTIVES: To report a case of allergic shoe dermatitis in which the search for the allergen ultimately led to the identification of dimethylthiocarbamylbenzothiazole sulfide (DMTBS). METHODS: A female presented with eczema on her feet after wearing Sperry Top Sider® canvas sneakers. Patch testing was performed with the European baseline series, additional series, shoe materials, and extracts of shoe materials...
August 4, 2017: Contact Dermatitis
https://www.readbyqxmd.com/read/28773979/an-in-depth-investigation-into-the-physicochemical-thermal-microstructural-and-rheological-properties-of-petroleum-and-natural-asphalts
#17
Nader Nciri, Jeonghyun Kim, Namho Kim, Namjun Cho
Over the last decade, unexpected and sudden pavement failures have occurred in several provinces in South Korea. Some of these failures remain unexplained, further illustrating the gaps in our knowledge about binder chemistry. To prevent premature pavement distress and enhance road performance, it is imperative to provide an adequate characterization of asphalt. For this purpose, the current research aims at inspecting the chemistry, microstructure, thermal, and physico-rheological properties of two types of asphalt, namely petroleum asphalt (PA) and natural asphalt (NA)...
October 21, 2016: Materials
https://www.readbyqxmd.com/read/28771624/lc-ms-ms-versus-tlc-plus-gc-methods-consistency-of-glycerolipid-and-fatty-acid-profiles-in-microalgae-and-higher-plant-cells-and-effect-of-a-nitrogen-starvation
#18
Juliette Jouhet, Josselin Lupette, Olivier Clerc, Leonardo Magneschi, Mariette Bedhomme, Séverine Collin, Sylvaine Roy, Eric Maréchal, Fabrice Rébeillé
Methods to analyze lipidomes have considerably evolved, more and more based on mass spectrometry technics (LC-MS/MS). However, accurate quantifications using these methods require 13C-labeled standards for each lipid, which is not feasible because of the very large number of molecules. Thus, quantifications rely on standard molecules representative of a whole class of lipids, which might lead to false estimations of some molecular species. Here, we determined and compared glycerolipid distributions from three different types of cells, two microalgae (Phaeodactylum tricornutum, Nannochloropsis gaditana) and one higher plant (Arabidopsis thaliana), using either LC-MS/MS or Thin Layer Chromatography coupled with Gas Chromatography (TLC-GC), this last approach relying on the precise quantification of the fatty acids present in each glycerolipid class...
2017: PloS One
https://www.readbyqxmd.com/read/28770552/extracts-of-terminalia-sericea-enhance-cell-migratory-activity-of-endothelial-hybrid-and-fibroblast-cells-in-vitro
#19
Hafiza Parkar, Olayinka Ayobami Aiyegoro, Paul Steenkamp, Vanessa Steenkamp
Terminalia sericea is a plant that has been used amongst others medicinally to treat wounds. The aim of this study was to assess the in vitro wound healing ability of T. sericea. Hot water, methanol, ethyl acetate, and hexane extracts were prepared. Thin layer chromatography (TLC) and ultra-performance liquid chromatography time of flight mass spectrometry (UPLC-TOF-MS) were used to determine the phytochemical classes and genus specific compounds present in the plant. Cytotoxicity was assessed in the SC-1 fibroblast and EA...
August 2, 2017: Planta Medica
https://www.readbyqxmd.com/read/28766527/-the-determination-of-2-4-di-tret-butyl-hydroxybenzene-for-the-purpose-of-the-chemical-toxicological-study-of-the-biological-materials
#20
V K Shormanov, E P Tsatsua, A P Astashkina
The objective of this work was to study peculiarities of identification of 2,4-di-tert-butyl hydroxybenzene (2,4-DTBHOB) in blood and the tissues of various organs with the use TLC, UR- and UV-spectrophotometry. The results of the study suggest the expediency of the application of ethylacetate as the extractive agent for the isolation of 2,4-DTBHOB from the biological materials. The optimal conditions for 2,4-DTBHOB extraction by this method were developed based on the decontamination of the analyte by means of removal of the organic substances of biological matrices using the L 40/100 mcm sorbent columns with the hexan/dioxane mixture (8...
2017: Sudebno-meditsinskaia Ekspertiza
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