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Topic Review
Natural Compounds: Advantages of Combination Therapy in Cancer
Cancer is one of the leading causes of death, and latest predictions indicate that cancer-related deaths will increase over the next few decades. Despite significant advances in conventional therapies, treatments are still far from ideal due to limitations such as lack of selectivity, non-specific distribution, and multidrug resistance. Some researches are focusing on the development of several strategies to improve the efficiency of chemotherapeutic agents and, as a result, overcome the challenges associated with conventional therapies. In this regard, combined therapy with natural compounds and other therapeutic agents, such as chemotherapeutics or nucleic acids, has recently emerged as a new strategy for tackling the drawbacks of conventional therapies.
  • 448
  • 22 May 2023
Topic Review
NATURAL CLINOPTILOLITE CHARACTERIZATION BY SEM
Clinoptilolite is the most common natural zeolite type. Owing to the very convenient Si/Al ratio, which characterizes this type of zeolite, it can be used for the fabrication of impedimetric water sensors, useful for example for breath rate mesurament and development of low-cost spirometers. The clinoptilolite adsorption properties are related to the large surface development due to the mesoporous structure. The clinoptilolite mesoporosity is a consequence of the unique lamellar texture of this mineral. The clinoptilolite lamellar texture cannot be observed by microscopical techniques like optical microscopy (OM) and scanning electron microscopy (SEM) without adequate sample preparation. Here, a very simple approach to delaminate the clinoptilolite mineral, based on the application of an impulsed compressive stress (hammer), has been used to separate the clinoptilolite single crystals and scanning electron microscopy has been used to visualize and to measure the clinoptilolite crystals.
  • 1.8K
  • 05 Jul 2021
Topic Review
Natural Clinoptilolite
Zeolites are ionic conductors and the cation electrical mobility in zeolites depends on their hydration state; consequently, the water adsorption/desorption process can be simply investigated by measuring the temporal evolution of current intensity in samples exposed to an environment with constant humidity or dry air, respectively. According to this kinetic analysis, a mechanism has been formulated for the water adsorption process able to justify the Lagergren pseudo-first-order kinetics observed for adsorption and the first-order kinetics observed for desorption. In this mechanism water molecules are first attract by the electric field of the cations and then they move at cation-framework interface to maximize the hydrogen bond interactions.
  • 1.2K
  • 28 Oct 2020
Topic Review
Natural Biopolymers Extracted from Biomass
Indeed, bio-based edible films and coatings have been indicated to be suitable for packaging fruits, vegetables, dairy, and meat-based products at a commercial level. Even though the bio-based polymers are promising.
  • 256
  • 10 Jul 2023
Topic Review
Natural Biopolymers
Natural biopolymers are an interesting resource for edible films production, as they are environmentally friendly packaging materials.
  • 6.2K
  • 23 Jun 2021
Topic Review
Natural Antiviral Polymers
Natural polymers or biopolymers are classified into polysaccharides, polypeptides (proteins), and nucleic acid polymers (polynucleotides). Natural polymers as components of living systems are derived from plants, animals, and microorganisms.
  • 851
  • 05 May 2022
Topic Review
Natural Antibacterial Surfaces
In nature, many organisms have evolved a myriad of surfaces with specific physicochemical properties to combat bacteria in diverse environments.
  • 535
  • 14 Jul 2022
Topic Review
Natural Antibacterial Additives in Bioactive Wound Dressings
Wound care is a global health issue with a financial burden of up to US $96.8 billion annually in the USA alone. Chronic non-healing wounds which show delayed and incomplete healing are especially problematic. Natural products and their derivatives have long been a significant source of pharmaceuticals against AMR. Scrutinising the data of newly approved drugs has identified plants as one of the biggest and most important sources in the development of novel antibacterial drugs.
  • 702
  • 10 Mar 2023
Topic Review
Natural and Synthetic Polymeric Biomaterials in Wound Management
Biomaterials are at the forefront of the future, finding a variety of applications in the biomedical field, especially in wound healing, thanks to their biocompatible and biodegradable properties. Wounds spontaneously try to heal through a series of interconnected processes involving several initiators and mediators such as cytokines, macrophages, and fibroblasts. The combination of biopolymers with wound healing properties may provide opportunities to synthesize matrices that stimulate and trigger target cell responses crucial to the healing process. 
  • 296
  • 07 Sep 2023
Topic Review
Natural and Synthetic Hydrogels in Wound Healing
The care and rehabilitation of acute and chronic wounds have a significant social and economic impact on patients and global health. This burden is primarily due to the adverse effects of infections, prolonged recovery, and the associated treatment costs. Chronic wounds can be treated with a variety of approaches, which include surgery, negative pressure wound therapy, wound dressings, and hyperbaric oxygen therapy. However, each of these strategies has an array of limitations. The existing dry wound dressings lack functionality in promoting wound healing and exacerbating pain by adhering to the wound. Hydrogels, which are commonly polymer-based and swell in water, have been proposed as potential remedies due to their ability to provide a moist environment that facilitates wound healing. Their unique composition enables them to absorb wound exudates, exhibit shape adaptability, and be modified to incorporate active compounds such as growth factors and antibacterial compounds. 
  • 633
  • 08 Jan 2024
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