Studies on the Interaction of Cefepime Hydrochloride with Bovine Serum Albumin by Fluorescence, Synchronous Fluorescence, Three-Dimensional Fluorescence and Circular Dichroism

Li, Daojin

doi:10.4172/1948-593x.1000162

Cited by 10 publications

(3 citation statements)

References 35 publications

(44 reference statements)

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“…In the systemic circulation, the synthesized drug has to come in contact with proteins, thus leading to a drug-protein interaction. Serum albumin protein present in blood maintains the osmotic pressure (colloidal) and transports biomolecules such as steroids, fatty acids, and hormones inside the body [18][19][20]. Drug molecules also interact with albumin in serum and are also carried by it in the systemic circulation.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Biophysical Interaction between Newly Synthesized Pyrazoline Pyridazine Derivative and Bovine Serum Albumin by Spectroscopic and Molecular Docking Studies

Almehizia

Bakheit

Zargar

et al. 2019

Journal of Spectroscopy

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In this research, the pyrazoline pyridazine derivative 7-methyl-2-phenyl-4-(3,4,5-trimethoxyphenyl)-2H-pyrazolo[3,4-d]pyridazine (5d) was studied for its interaction with bovine serum albumin (BSA). Various spectroscopic techniques along with molecular docking analysis were utilized to understand the mechanism of interaction. The quenching of BSA fluorescence by using investigational drug 5d was the basic principle for the methodology. Spectrofluorometric methods and UV-absorption studies were conducted for exploration of the 5d and BSA binding mechanism. The fluorescence quenching mechanism involved in BSA and 5d interaction was static quenching, and a complex formation also occurred between them. Both enthalpy and entropy attained positive values suggesting involvement of hydrophobic forces in BSA and 5d interaction. The Förster distance of 2.23 nm was calculated by fluorescence resonance energy transfer (FRET). An alteration in BSA secondary structure was proven from the conformational studies of BSA-5d interaction. This binding interaction study provided a basis to comprehend the binding interaction between 5d and BSA. These results provided information about sites of BSA involved in its interaction with 5d.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Biophysical Interaction between Newly Synthesized Pyrazoline Pyridazine Derivative and Bovine Serum Albumin by Spectroscopic and Molecular Docking Studies

Almehizia

Bakheit

Zargar

et al. 2019

Journal of Spectroscopy

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“…Calculation equations Dynamic quenching is the mechanism of fluorescence quenching. The calculation is disclosed as follows [26]:…”

Section: λ-Uv-f Fingerprintmentioning

confidence: 99%

Three-Dimensional Fingerprint Spectroscopy Study on the Biopolymer System of Polyphenol Oxidase Binding with Cumalic Acid

Wu¹,

Ling²,

Yao³

et al. 2022

Bull. of the Kar. Univ. "Chem". Ser.

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The protection of Cumalic acid (CA), antioxidant, in the biochemical process in nature has aroused great interest.Polyphenol oxidase (PPO), an enzyme, plays a vital function in aging and browning of plants, such as vegetables, fruits and mushrooms. The interaction of CA and PPO reveals the important information in metabolism and aging. Thus, the molecular mechanism of CA binding with polyphenol oxidase (PPO) was explored by combining spectroscopic methods with molecular modeling. A three-dimensional fingerprint of the CA-PPO complex was built for the first time to characterize the interaction biopolymer between CA and PPO. Application of the spectroscopic methods indicated that CA effectively quenched the intrinsic fluorescence of PPO. The enthalpy change (ΔH°) and entropy change (ΔS°) suggested that the CA-PPO complex was predominantly stabilized by hydrophobic interactions CA and PPO. Building the λ-UV-F fingerprint of CA-PPO made it possible to demonstrate the three-dimensional interactions between CA and PPO. Subsequently, molecular modeling demonstrated that CA was primarily bound to PPO by hydrophobic interactions and hydrogen bonds located at amino acid residues Ala202, His38, His54 and Ser206. The computational simulations were consistent with the spectral experiments demonstrating confidence in the three-dimensional model determined of the CA-PPO interaction.

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“…Un estudio de simulación con modelos PK basados en fisiología encontró que pueden darse conclusiones erróneas al utilizar concentraciones totales (como en este caso) para determinar el efecto de la unión a proteínas en f u [71]. Además en este estudio, se observó que la relación V 1 -ALB no resultó significativa (ver Tabla 5.11), pese a que la albúmina es la principal proteína de unión en el plasma [72]. Por estas razones, no se considera a la concentración de proteínas o albúmina como una covariable a incluir en el modelo final.…”

Section: Métodos Automáticos De Evaluación De Covariablesunclassified

Reduction of quantitative systems pharmacology models using artificial neural networks

Derbalah

Al‐Sallami

Duffull

2021

J Pharmacokinet Pharmacodyn

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cuyas enseñanzas de vida me han motivado para persistir. IX ResumenFarmacocinética poblacional en el manejo empírico de infecciones en pacientes con neoplasias hematológicas y neutropenia febril pos-quimioterapia Los pacientes con neoplasias hematológicas y neutropenia febril postquimioterapia podrían presentar alteraciones fisiológicas que lleven a cambios en la farmacocinética (PK) de los fármacos comparado a individuos sin cáncer o neutropenia. Estos cambios, en la PK de antibióticos, podrían resultar en fallos terapéuticos y esto a su vez en hospitalizaciones prolongadas, empeoramiento en la severidad de la infección e inclusive en la muerte. En este estudio, se desarrollaron modelos de PK poblacional para cefepime (FEP) y vancomicina (VAN) en el tratamiento empírico de infecciones en pacientes con neutropenia post-quimioterapia. La farmacocinética de FEP fue descrita por un modelo de dos compartimentos con aclaramiento dependiente del nivel de creatinina sérica (S CR ), variabilidad interindividual en todos los parámetros y variabilidad residual con una función aditiva. Por otra parte, la farmacocinética de VAN fue descrita con un modelo de dos compartimentos con aclaramiento dependiente del aclaramiento renal de creatinina (ClCr), variabilidad interindividual en todos los parámetros, correlación entre los parámetros V 1 y V 2 y una variabilidad residual con funciones aditivas dependientes del método de determinación de VAN. Mediante simulaciones de Monte Carlo se encontró que para FEP, el alcance de los objetivos PK/PD (60 % f T >MIC y 100 % f T >MIC ) es muy dependiente de la duración de infusión, así como del efecto de S CR . Para VAN se encuentra que el alcance del indicador AUC/MIC ≥ 400 se ve afectado por cambios en la dosis diaria total y la prolongación de la duración de infusión no afecta el PTA. Se realizó una comparación entre objetivos dependientes de AUC vs C min , y se encuentró que el último no es un predictor adecuado del primero.

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Studies on the Interaction of Cefepime Hydrochloride with Bovine Serum Albumin by Fluorescence, Synchronous Fluorescence, Three-Dimensional Fluorescence and Circular Dichroism

Cited by 10 publications

References 35 publications

Evaluation of Biophysical Interaction between Newly Synthesized Pyrazoline Pyridazine Derivative and Bovine Serum Albumin by Spectroscopic and Molecular Docking Studies

Evaluation of Biophysical Interaction between Newly Synthesized Pyrazoline Pyridazine Derivative and Bovine Serum Albumin by Spectroscopic and Molecular Docking Studies

Three-Dimensional Fingerprint Spectroscopy Study on the Biopolymer System of Polyphenol Oxidase Binding with Cumalic Acid

Reduction of quantitative systems pharmacology models using artificial neural networks

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