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Zeng Z, Qasem AMA, Blagbrough IS, Woodman TJ. Intramolecular through-space NMR spectroscopic effect of steric compression on 1H NMR spectroscopy. Org Biomol Chem 2024; 22:7915-7935. [PMID: 39248501 DOI: 10.1039/d4ob01108b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/10/2024]
Abstract
The intramolecular through-space NMR spectroscopic effect of steric compression is related to intramolecular through-space van der Waals repulsion. The electron cloud of a proton can be pushed away by the electron cloud of a nearby proton or functional group. As the electron population of the sterically compressed proton is decreased (therefore deshielded), the chemical shift sharply moves downfield, which may result in ambiguity for the proton signal assignment. Also, the conformation of the local area of the sterically compressed proton can be altered by the steric repulsion, therefore, the coupling constant/coupling pattern of a sterically compressed proton could be influenced. This review summarizes and presents the impacts on the chemical shift and coupling constant by the 1H NMR spectroscopic effect of steric compression extracted from the reported examples from the 1950s to 2021.
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Affiliation(s)
- Ziyu Zeng
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong, Shanghai 201203, P. R. China
| | - Ashraf M A Qasem
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Zarqa University, Jordan.
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Aycan D. Alginate/hyaluronic acid/gelatin ternary blended films as pH-sensitive drug carriers: In vitro ampicillin release and kinetic studies. Int J Biol Macromol 2024; 277:134111. [PMID: 39048006 DOI: 10.1016/j.ijbiomac.2024.134111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 07/19/2024] [Accepted: 07/21/2024] [Indexed: 07/27/2024]
Abstract
Researchers continuously focused on the fabrication of innovative drug delivery systems to prevent microbial infections while minimizing systemic side effects. Among these, pH-sensitive antibiotic release systems based on bio-based materials have gained great attention due to their ability to precisely modulate drug kinetics and enhance therapeutic efficacy. Herein, pH-sensitive alginate/hyaluronic acid/gelatin ternary blended films were fabricated for the controlled release of ampicillin. Swelling capacity, hydrolytic degradation profile, pH reversibility and in vitro ampicillin release behavior of produced films were investigated in both simulated gastric (pH 1.2) and intestinal (pH 7.4) environments. The cumulative release amount of ampicillin at pH 1.2 (61.0 ± 1.07 mg drug/g polymer) was greater than that of at pH 7.4 (43.0 ± 1.05 mg drug/g polymer) proved that release behavior of ampicillin for produced films is pH-dependent. Based on the fitted release data, best fit was found as the first-order kinetic model with the highest R2 values of 0.966 and 0.962 for both pH conditions. According to Korsmeyer-Peppas model, drug release mechanism is also controlled by case II-transport. Furthermore, produced films demonstrated excellent cytocompatibility. All results revealed that obtained films could be a promising drug carrier to traditional targeting systems for site-specific, pH-sensitive ampicillin delivery in both gastric and intestine.
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Affiliation(s)
- Didem Aycan
- Marmara University, Department of Chemical Engineering, 34854 Istanbul, Turkey.
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Hansen ME, Ibrahim Y, Desai TA, Koval M. Nanostructure-Mediated Transport of Therapeutics through Epithelial Barriers. Int J Mol Sci 2024; 25:7098. [PMID: 39000205 PMCID: PMC11241453 DOI: 10.3390/ijms25137098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 07/16/2024] Open
Abstract
The ability to precisely treat human disease is facilitated by the sophisticated design of pharmacologic agents. Nanotechnology has emerged as a valuable approach to creating vehicles that can specifically target organ systems, effectively traverse epithelial barriers, and protect agents from premature degradation. In this review, we discuss the molecular basis for epithelial barrier function, focusing on tight junctions, and describe different pathways that drugs can use to cross barrier-forming tissue, including the paracellular route and transcytosis. Unique features of drug delivery applied to different organ systems are addressed: transdermal, ocular, pulmonary, and oral delivery. We also discuss how design elements of different nanoscale systems, such as composition and nanostructured architecture, can be used to specifically enhance transepithelial delivery. The ability to tailor nanoscale drug delivery vehicles to leverage epithelial barrier biology is an emerging theme in the pursuit of facilitating the efficacious delivery of pharmacologic agents.
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Affiliation(s)
- M. Eva Hansen
- University of California Berkeley-University of California San Francisco Graduate Program in Bioengineering, San Francisco, CA 94143, USA;
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA 94143, USA
| | - Yasmin Ibrahim
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA;
- Graduate Program in Biochemistry, Cell and Developmental Biology, Graduate Division of Biological and Biomedical Sciences, Emory University, Atlanta, GA 30322, USA
| | - Tejal A. Desai
- University of California Berkeley-University of California San Francisco Graduate Program in Bioengineering, San Francisco, CA 94143, USA;
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA 94143, USA
- School of Engineering, Brown University, Providence, RI 02912, USA
| | - Michael Koval
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA;
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322, USA
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Romeo M, Mazzotta E, Lovati F, Porto M, Rossi CO, Muzzalupo R. Pluronic 123 Liquid Lyotropic Crystals for Transdermal Delivery of Caffeic Acid-Insights from Structural Studies and Drug Release. Gels 2024; 10:181. [PMID: 38534599 DOI: 10.3390/gels10030181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/01/2024] [Accepted: 03/03/2024] [Indexed: 03/28/2024] Open
Abstract
BACKGROUND This study aims to evaluate the percutaneous permeation profiles of caffeic acid (CA) from the cubic and hexagonal liquid crystalline phases of Pluronic P123/water mixtures. METHOD The resulting drug-loaded mesophases were subjected to characterisation through deuterium nuclear magnetic resonance spectroscopy and polarised optical microscopy observations. These analyses aimed to evaluate the structural changes that occurred in the mesophases loading with CA. Additionally, steady and dynamic rheology studies were conducted to further explore their mechanical properties and correlate them to the supramolecular structure. Finally, CA release experiments were carried out at two different temperatures to examine the behaviour of the structured systems in a physiological or hyperthermic state. RESULTS As the concentration of the polymer increases, an increase in the viscosity of the gel is noted; however, the addition of caffeic acid increases microstructure fluidity. It is observed that the temperature effect conforms to expectations. The increase in temperature causes a decrease in viscosity and, consequently, an increase in the rate of permeation of caffeic acid. CONCLUSIONS The CA permeation profile from the prepared formulations is mostly dependent on the structural organisation and temperature. Cubic mesophase LLC 30/CA showed greater skin permeation with good accumulation in the skin at both tested temperatures.
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Affiliation(s)
- Martina Romeo
- Department of Pharmacy Health and Nutritional Sciences, University of Calabria, Via P. Bucci, 87036 Arcavacata di Rende, Italy
| | - Elisabetta Mazzotta
- Department of Pharmacy Health and Nutritional Sciences, University of Calabria, Via P. Bucci, 87036 Arcavacata di Rende, Italy
| | - Francesca Lovati
- Department of Pharmacy Health and Nutritional Sciences, University of Calabria, Via P. Bucci, 87036 Arcavacata di Rende, Italy
| | - Michele Porto
- Department of Chemistry and Chemical Technologies, Cubo 14/D, University of Calabria, Via P. Bucci, 87036 Arcavacata di Rende, Italy
| | - Cesare Oliviero Rossi
- Department of Chemistry and Chemical Technologies, Cubo 14/D, University of Calabria, Via P. Bucci, 87036 Arcavacata di Rende, Italy
| | - Rita Muzzalupo
- Department of Pharmacy Health and Nutritional Sciences, University of Calabria, Via P. Bucci, 87036 Arcavacata di Rende, Italy
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Kharga K, Jha S, Vishwakarma T, Kumar L. Current developments and prospects of the antibiotic delivery systems. Crit Rev Microbiol 2024:1-40. [PMID: 38425122 DOI: 10.1080/1040841x.2024.2321480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 02/16/2024] [Indexed: 03/02/2024]
Abstract
Antibiotics have remained the cornerstone for the treatment of bacterial infections ever since their discovery in the twentieth century. The uproar over antibiotic resistance among bacteria arising from genome plasticity and biofilm development has rendered current antibiotic therapies ineffective, urging the development of innovative therapeutic approaches. The development of antibiotic resistance among bacteria has further heightened the clinical failure of antibiotic therapy, which is often linked to its low bioavailability, side effects, and poor penetration and accumulation at the site of infection. In this review, we highlight the potential use of siderophores, antibodies, cell-penetrating peptides, antimicrobial peptides, bacteriophages, and nanoparticles to smuggle antibiotics across impermeable biological membranes to achieve therapeutically relevant concentrations of antibiotics and combat antimicrobial resistance (AMR). We will discuss the general mechanisms via which each delivery system functions and how it can be tailored to deliver antibiotics against the paradigm of mechanisms underlying antibiotic resistance.
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Affiliation(s)
- Kusum Kharga
- School of Biotechnology, Faculty of Applied Sciences and Biotechnology, Shoolini University, Himachal Pradesh, India
| | - Shubhang Jha
- School of Bioengineering and Food Technology, Faculty of Applied Sciences and Biotechnology, Shoolini University, Himachal Pradesh, India
| | - Tanvi Vishwakarma
- School of Bioengineering and Food Technology, Faculty of Applied Sciences and Biotechnology, Shoolini University, Himachal Pradesh, India
| | - Lokender Kumar
- School of Biotechnology, Faculty of Applied Sciences and Biotechnology, Shoolini University, Himachal Pradesh, India
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Kumar L, Rana R, Kukreti G, Aggarwal V, Chaurasia H, Sharma P, Jyothiraditya V. Overview of Spanlastics: A Groundbreaking Elastic Medication Delivery Device with Versatile Prospects for Administration via Various Routes. Curr Pharm Des 2024; 30:2206-2221. [PMID: 38967069 DOI: 10.2174/0113816128313398240613063019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 05/23/2024] [Accepted: 05/27/2024] [Indexed: 07/06/2024]
Abstract
When compared to the challenges associated with traditional dosage forms, medication delivery systems based on nanotechnology have been a huge boon. One such candidate for medication delivery is spanlastics, an elastic nanovesicle that can transport a diverse array of medicinal compounds. The use of spanlastics has been associated with an increase in interest in alternative administration methods. The non-ionic surfactant or surfactant blend is the main component of spanlastics. The purpose of this review was primarily to examine the potential of spanlastics as a delivery system for a variety of medication classes administered via diverse routes. Science Direct, Google Scholar, and Pubmed were utilized to search the academic literature for this review. Several studies have demonstrated that spanlastics greatly improve therapeutic effectiveness, increase medication absorption, and decrease drug toxicity. This paper provides a summary of the composition and structure of spanlastics along with their utility in the delivery of various therapeutic agents by adopting different routes. Additionally, it provides an overview of the numerous disorders that may be treated using drugs that are contained in spanlastic vesicles.
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Affiliation(s)
- Lalit Kumar
- Department of Pharmaceutics, GNA School of Pharmacy, GNA University, Phagwara, Punjab 144401, India
| | - Ritesh Rana
- Department of Pharmaceutical Sciences (Pharmaceutics), Laureate Institute of Pharmacy, Kathog-Kangra, Himachal Pradesh 176031, India
| | - Gauree Kukreti
- School of Pharmaceutical Sciences and Technology, Sardar Bhagwan Singh University, Balawala Dehradun, Uttarakhand 248161, India
| | - Vikas Aggarwal
- Senior Pharmacovigilance Specialist, Continuum India LLP, 3rd Floor, Tower F DLF Building, Chandigarh Technology Park, Chandigarh 160101, India
| | - Himanshu Chaurasia
- Department of Pharmacy, Quantum School of Health Science, Quantum University, Vill. Mandawar (N.H.73), Roorkee-Dehradun Highway, Roorkee, Uttrakhand 247662, India
| | - Puneet Sharma
- Department of Pharmaceutical Sciences (Pharmaceutics), Himachal Institute of Pharmaceutical Education and Research (HIPER), Bela-Nadaun, District-Hamirpur, H.P. 177033, India
| | - Vuluchala Jyothiraditya
- Center for Global Health Research, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu 602105, India
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