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https://www.readbyqxmd.com/read/29776457/a-new-green-method-for-the-quantitative-analysis-of-enrofloxacin-by-fourier-transform-infrared-spectroscopy
#1
Camila Tavares Rebouças, Ana Carolina Kogawa, Hérida Regina Nunes Salgado
Background: A green analytical chemistry method was developed for quantification of enrofloxacin in tablets. The drug, a second-generation fluoroquinolone, was first introduced in veterinary medicine for the treatment of various bacterial species. Objective: This study proposed to develop, validate, and apply a reliable, low-cost, fast, and simple IR spectroscopy method for quantitative routine determination of enrofloxacin in tablets. Methods: The method was completely validated according to the International Conference on Harmonisation guidelines, showing accuracy, precision, selectivity, robustness, and linearity...
May 18, 2018: Journal of AOAC International
https://www.readbyqxmd.com/read/29733066/de-las-primeras-iniciativas-de-medicina-laboral-en-m%C3%A3-xico-el-hospital-de-mineros-de-real-del-monte
#2
José Luis Gómez, Carlos Agustín Rodríguez-Paz
A pesar de la legislación de Otto von Bismarck (1815-1898) sobre derechos de seguridad social formulada en 1883 en Alemania donde se señala que es deber del Estado promover el bienestar de todos los miembros de la sociedad, particularmente de los más débiles y necesitados utilizando los medios con los que dispone, y las propuestas de leyes contra accidentes expedidas el 30 de abril de 1904 en el Estado de México, en el México del porfiriato no se consideró brindar atención médica formal a los trabajadores, salvo algunas empresas ferrocarrileras, no se construyeron hospitales para atender a pacientes con enfermedades laborales...
2018: Gaceta Médica de México
https://www.readbyqxmd.com/read/29580065/status-of-rifaximin-a-review-of-characteristics-uses-and-analytical-methods
#3
Ana Carolina Kogawa, Hérida Regina Nunes Salgado
Rifaximin, an oral antimicrobial, has many advantages because it is selective intestine, has minimal adverse effects and is used for the treatment of some diseases such as hepatic encephalopathy, irritable bowel syndrome, travelers' diarrhea, ulcerative colitis, Clostridium difficile and acute diarrhea. Rifaximin in the form of 200 mg tablets is commercially available. The crystalline α form is therapeutically safe and effective. In most of the official compendia, rifaximin has no monograph and in none of them is there a monograph for rifaximin tablets...
March 26, 2018: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/29556132/release-and-permeation-profiles-of-spray-dried-chitosan-microparticles-containing-caffeic-acid
#4
Caroline Magnani Spagnol, Ana Melero Zaera, Vera Lucia Borges Isaac, Marcos Antonio Corrêa, Hérida Regina Nunes Salgado
Caffeic acid (CA), a phenolic compound found in plants with antioxidant and antimicrobial activity, induces collagen production and prevents premature aging of the skin. The objective of this study was to develop two types of chitosan microparticles (MP) containing CA and to relate the morphology with the release and permeation profiles. One type of MP was prepared from a hydroalcoholic solution (MPI) and the other from an aqueous solution (MPII). Their morphology and size was evaluated by high-resolution scanning electron microscopy...
March 2018: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/29533074/analytical-methods-for-the-determination-of-rosuvastatin-in-pharmaceutical-formulations-and-biological-fluids-a-critical-review
#5
REVIEW
Marilene Lopes Ângelo, Fernanda de Lima Moreira, André Luís Morais Ruela, Ana Laura Araújo Santos, Hérida Regina Nunes Salgado, Magali Benjamim de Araújo
Rosuvastatin calcium (ROS), ( Figure 1 ) belongs to the "statins" group, which is the 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor. This drug is indicated for dyslipidemias treatment and can help to decrease the level of "bad cholesterol" and can consequently reduce the development of atherosclerosis and the risk of heart diseases. ROS was developed by Astra-Zeneca and it was approved in 2003 by the FDA in the United States. In 2015, under the trade name Crestor®, it was the fourth largest selling drug in the United States with sales above $5 billion...
July 4, 2018: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/29377708/a-critical-review-of-analytical-methods-for-determination-of-ceftriaxone-sodium
#6
REVIEW
Mariana Teixeira da Trindade, Hérida Regina Nunes Salgado
Ceftriaxone sodium is a third-generation semi-synthetic antibiotic belonging to the class of cephalosporins. Is administered only by parenteral route and has the ability to cross the blood-brain barrier. It has bactericidal action; its main activity is related to the Gram-negative bacteria, being also able to act against Gram-negative bacilli resistant to the first- and second-generation cephalosporins. The present study presents a survey of the characteristics, properties and analytical methods used for the determination of ceftriaxone sodium, for the gathering of data searches were carried out in scientific articles in the world literature, as well as in the official compendia...
March 4, 2018: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/29345957/besifloxacin-a-critical-review-of-its-characteristics-properties-and-analytical-methods
#7
REVIEW
Eliane Gandolpho Tótoli, Hérida Regina Nunes Salgado
Bacterial conjunctivitis has high impact on the health of the population, since it represents more than a third of ocular pathologies reported by health services worldwide. There is a high incidence of bacterial resistance to the antimicrobials most commonly used for the treatment of conjunctivitis. In this context, besifloxacin stands out, since it is a fluoroquinolone developed exclusively for topical ophthalmic use, presenting a low risk of developing resistance due to its reduced systemic exposure. Bausch & Lomb markets it as ophthalmic suspension, under the trade name Besivance™...
March 4, 2018: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/29239659/characteristics-properties-and-analytical-methods-of-paclitaxel-a-review
#8
REVIEW
Renata Carolina Alves, Richard Perosa Fernandes, Josimar O Eloy, Hérida Regina Nunes Salgado, Marlus Chorilli
Paclitaxel is a diterpenoid pseudoalkaloid, isolated from Taxus brevifolia, and is largely used as an antitumoral drug. The formulation of paclitaxel known as Taxol® employs a mixture of Cremophor EL and dehydrated ethanol, due the low drug water solubility. However, Taxol® causes some unwanted side effects due to the presence of Cremophor EL and ethanol in the formulation. Based on this, there is a need for the development of drug delivery systems to enhance the solubility, permeability and stability of paclitaxel and to promote a controlled and targeted delivery for better therapeutic effect and reduced side effects...
March 4, 2018: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/29206828/chest-trauma-of-alexander-the-great-a-pneumology-approach
#9
José Luis Sandoval-Gutiérrez
Delgado-García, et al. presentan una disertación amplia, con revisión histórica profunda, de la lesión torácica que sufrió Alejandro Magno por el disparo de una saeta de dos codos de largo (88 cm) en la batalla contra los malios, donde a través de diversas narraciones se ha considerado que sufrió un neumotórax y que debido a la gravedad de la lesión sus médicos decidieron retirar el objeto punzocortante, obteniéndose aire y sangre posextracción; el emperador perdió el estado de alerta, recuperándose posteriormente la herida y permitiéndole montar a caballo a los pocos días...
November 2017: Gaceta Médica de México
https://www.readbyqxmd.com/read/29057140/quality-of-ceftriaxone-sodium-in-lyophilized-powder-for-injection-evaluated-by-clean-fast-and-efficient-spectrophotometric-method
#10
Patrícia Vidal de Aléssio, Ana Carolina Kogawa, Hérida Regina Nunes Salgado
Ceftriaxone sodium, an antimicrobial agent that plays an important role in clinical practice, is successfully used to treat infections caused by most Gram-positive and Gram-negative organisms. Since there are few rapid analytical methods for ceftriaxone analysis to use in the pharmaceutical routine, the aim of this research was to develop a new method able to quantify this cephalosporin. Therefore, a sensitive, rapid, simple UV spectrophotometric method for the determination and quantification of ceftriaxone sodium was proposed...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/29039968/characteristics-biological-properties-and-analytical-methods-of-ursolic-acid-a-review
#11
REVIEW
Andressa Maria Pironi, Patricia Rocha de Araújo, Mariza Aires Fernandes, Hérida Regina Nunes Salgado, Marlus Chorilli
Ursolic acid (UA) is a naturally occurring triterpenoid which is a promising candidate for the development of new therapeutic approaches and for the prevention and treatment of several diseases owing to its pharmacological importance. However, its low solubility in aqueous medium affects its therapeutic application. Several strategies have been used to overcome this obstacle. In this study, the incorporation of UA in to different drug delivery systems was found to be highly efficient. In addition, important investigations were performed about methods for qualitative and quantitative analyses of UA in various raw materials, including plants, biological fluids, and drug delivery systems, were investigated...
January 2, 2018: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28951681/synthetic-detergents-100%C3%A2-years-of-history
#12
REVIEW
Ana Carolina Kogawa, Beatriz Gamberini Cernic, Leandro Giovanni Domingos do Couto, Hérida Regina Nunes Salgado
In the year 2016 the synthetic detergents complete 100 years and in this story they evolved as cleaners. They are already part of the routine of thousands of people worldwide. For a higher power of cleaning of the detergent, today, are added phosphates, the main responsible for environmental problems. After 100 years of synthetic detergents, the effect of the combination of various cleaners on the environment is a gap. Legislation and guidelines about the other components of the formula of cleaners still missing...
September 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28917263/fourier-transform-infrared-ftir-spectrophotometry-an-ecofriendly-method-for-the-analysis-of-injectable-daptomycin
#13
Eliane Gandolpho Tótoli, Hérida Regina Nunes Salgado
Daptomycin (DPT) is an important antimicrobial agent used in clinical practice because it is very active against several types of medicinally challenging Gram-positive bacteria, such as methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococci. In addition to concerns about the quality of the analytical methods used in the QC of drugs, there is also concern about the impact of these methods on the environment. The trend toward sustainable consumption is increasingly evident and has forced the pharmaceutical industry to reduce the generation of toxic waste...
September 1, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28892402/metformin-a-review-of-characteristics-properties-analytical-methods-and-impact-in-the-green-chemistry
#14
REVIEW
Mariana Teixeira da Trindade, Ana Carolina Kogawa, Hérida Regina Nunes Salgado
Diabetes mellitus (DM) is considered a public health problem. The initial treatment consists of improving the lifestyle and making changes in the diet. When these changes are not enough, the use of medication becomes necessary. The metformin aims to reduce the hepatic production of glucose and is the preferred treatment for type 2. The objective is to survey the characteristics and properties of metformin, as well as hold a discussion on the existing analytical methods to green chemistry and their impacts for both the operator and the environment...
January 2, 2018: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28873428/evaluation-of-robenidine-analog-ncl195-as-a-novel-broad-spectrum-antibacterial-agent
#15
Abiodun D Ogunniyi, Manouchehr Khazandi, Andrew J Stevens, Sarah K Sims, Stephen W Page, Sanjay Garg, Henrietta Venter, Andrew Powell, Karen White, Kiro R Petrovski, Geraldine Laven-Law, Eliane G Tótoli, Hérida R Salgado, Hongfei Pi, Geoffrey W Coombs, Dean L Shinabarger, John D Turnidge, James C Paton, Adam McCluskey, Darren J Trott
The spread of multidrug resistance among bacterial pathogens poses a serious threat to public health worldwide. Recent approaches towards combating antimicrobial resistance include repurposing old compounds with known safety and development pathways as new antibacterial classes with novel mechanisms of action. Here we show that an analog of the anticoccidial drug robenidine (4,6-bis(2-((E)-4-methylbenzylidene)hydrazinyl)pyrimidin-2-amine; NCL195) displays potent bactericidal activity against Streptococcus pneumoniae and Staphylococcus aureus by disrupting the cell membrane potential...
2017: PloS One
https://www.readbyqxmd.com/read/28762323/rifaximin-stability-a-look-at-uv-ir-hplc-and-turbidimetry-methods
#16
Ana Carolina Kogawa, Hérida Regina Nunes Salgado
The study of the stability of medicines is mandated by the International Conference on Harmonization and the World Health Organization. Rifaximin, an antimicrobial marketed in the form of tablets, has no record of stability studies. Thus, the objective of the present work was to investigate the behavior and stability of rifaximin tablets for 6 months under simultaneous conditions of temperature and humidity by UV, IR, HPLC, and turbidimetry techniques. After 6 months of stability study, rifaximin tablets were shown to obey zero-order kinetics when analyzed by physicochemical methods and second-order kinetics when analyzed by a microbiological method...
March 1, 2018: Journal of AOAC International
https://www.readbyqxmd.com/read/28571540/caffeic-acid-in-dermatological-formulations-in-vitro-release-profile-and-skin-absorption
#17
Caroline M Spagnol, Leonardo D Di Filippo, Vera L B Isaac, Marcos A Correa, Herida R N Salgado
AIM AND OBJECTIVE: Caffeic acid (CA) is a cinnamic acid derivative, found in many vegetable products, with powerful antioxidant activity, the ability to increase collagen production and capacity to prevent premature aging of the skin. The classic emulsions of CA are widely used by the consumer to provide a pleasant, refreshing sensorial experience; however, preparations developed in the form of dry film are presented as a technological alternative due to its facile and safe transportation...
2017: Combinatorial Chemistry & High Throughput Screening
https://www.readbyqxmd.com/read/28287269/a-critical-review-of-analytical-methods-for-quantification-of-cefotaxime
#18
REVIEW
Lívia Paganini Consortti, Hérida Regina Nunes Salgado
Bacterial resistance to antibiotics is a growing phenomenon in the world. Considering the relevance of antimicrobials for population and the reduction in the registration of new antimicrobials by regulatory, proper quality control is required in order to minimize the spread of bacterial resistance and ensure the effectiveness of a treatment, as well as safety for the patient. Among the antimicrobials is cefotaxime, a drug belonging to third-generation cephalosporins, which is highly active against Gram-negative bactéria and is used to treat central nervous system infections such as meningitis and septicemia...
July 4, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28206879/development-and-validation-of-a-green-analytical-method-for-the-determination-of-norfloxacin-in-raw-material-by-ftir-spectrophotometry
#19
Jéssica Sayuri Hisano Natori, Eliane Gandolpho Tótoli, Hérida Regina Nunes Salgado
Norfloxacin is a broad-spectrum antimicrobial agent, widely used in humans and animals for the treatment of urinary tract infections. It is a second-generation fluoroquinolone. Several analytical methods to analyze norfloxacin have been described in the literature. However, most of them are complex and require the use of large amounts of organic solvents. This paper describes the development and validation of a green analytical method for the determination of norfloxacin in raw material by FTIR spectrophotometry...
November 1, 2016: Journal of AOAC International
https://www.readbyqxmd.com/read/28080136/isoniazid-a-review-of-characteristics-properties-and-analytical-methods
#20
REVIEW
Guilherme Felipe Dos Santos Fernandes, Hérida Regina Nunes Salgado, Jean Leandro Dos Santos
Isoniazid is a synthetic antimicrobial and one of the most important first-line drugs used in the treatment of tuberculosis. Since it was introduced in the therapy in 1952, the drug remains at the front line of the antituberculosis treatment mainly due to its potency and high selectivity against Mycobacterium tuberculosis. Pharmaceutical analysis and therapeutic drug monitoring of isoniazid in both, pharmaceuticals and biological samples, plays an important role to comprehend aspects regarding to bioavailability, bioequivalence and therapeutic monitoring during patients following-up...
July 4, 2017: Critical Reviews in Analytical Chemistry
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