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Planar chromatography is used to develop methods for the analytical control of processes of the synthesis of biomedical polymers and their complexes with biologically active substances, which made it possible to create a number of long-acting antiviral, antitumor, antimicrobial, and antiseptic preparations. [ABSTRACT FROM AUTHOR]

To analyze the substantial development of biomedical polymers in a number of potential biomedical domains, including the disease diagnosis and therapy. Results. The relationship between material's properties and functions for matching biomedical applications is thoroughly elucidated in this paper, along with a rundown of current advancements in the production and appliance of biomedical polymers. The peptide, biomembrane, microbe and cell-based biomedical polymers are presented and highlighted as new biomaterials for the tumor precision treatment. Additionally, the prospects and difficulties of creating the future biomedical polymers, which are healthier, safer, and more effective, are appraised. Conclusions. This systematic and in-depth analysis of the most recent advancements in the biomedical polymers development is intended to inspire and promote new discoveries in the basic science and clinical application. [ABSTRACT FROM AUTHOR]

An analysis of literature data on the set of reactions for the production of macromolecules with a high content of phosphorus and sulfur has been carried out, and basic approaches that allow the introduction of these elements into the composition of polymers and polymeric materials have been considered in compliance with the fundamental principles of green chemistry. Methods for synthesis of functional polymers under mild conditions that require minimal energy input from external sources, which can become new growth points for green industrial technologies, are considered. Particular attention focuses on the synthesis of polyphosphazenes and polyphosphoesters for biomedical purposes, as well as on the inverse vulcanization reaction to give polymers used in sorption wastewater treatment, the creation of current sources, and IR optics. [ABSTRACT FROM AUTHOR]

Asthma is a chronic airway inflammatory disease with complex mechanisms, and these patients often encounter difficulties in their treatment course due to the heterogeneity of the disease. Currently, clinical treatments for asthma are mainly based on glucocorticoid-based combination drug therapy; however, glucocorticoid resistance and multiple side effects, as well as the occurrence of poor drug delivery, require the development of more promising treatments. Nanotechnology is an emerging technology that has been extensively researched in the medical field. Several studies have shown that drug delivery systems could significantly improve the targeting, reduce toxicity and improve the bioavailability of drugs. The use of multiple nanoparticle delivery strategies could improve the therapeutic efficacy of drugs compared to traditional delivery methods. Herein, the authors presented the mechanisms of asthma development and current therapeutic methods. Furthermore, the design and synthesis of different types of nanomaterials and micromaterials for asthma therapy are reviewed, including polymetric nanomaterials, solid lipid nanomaterials, cell membranes-based nanomaterials, and metal nanomaterials. Finally, the challenges and future perspectives of these nanomaterials are discussed to provide guidance for further research directions and hopefully promote the clinical application of nanotherapeutics in asthma treatment. [ABSTRACT FROM AUTHOR]

In recent years, the environmental problems accompanying the extensive application of biomedical polymer materials produced from fossil fuels have attracted more and more attentions. As many biomedical polymer products are disposable, their life cycle is relatively short. Most of the used or overdue biomedical polymer products need to be burned after destruction, which increases the emission of carbon dioxide (CO2). Developing biomedical products based on CO2 fixation derived polymers with reproducible sources, and gradually replacing their unsustainable fossil-based counterparts, will promote the recycling of CO2 in this field and do good to control the greenhouse effect. Unfortunately, most of the existing polymer materials from renewable raw materials have some property shortages, which make them unable to meet the gradually improved quality and property requirements of biomedical products. In order to overcome these shortages, much time and effort has been dedicated to applying nanotechnology in this field. The present paper reviews recent advances in nanocomposites of CO2 fixation derived reproducible polymers for biomedical applications, and several promising strategies for further research directions in this field are highlighted.

A plethora of synthetic, hybrid and biological polymers are widely being used in medical applications. Many polymers are helpful in our civic activities. Their peculiar chemical, physical, and biological properties are applicable in multiple domains of life from engineering to medicine. This review specifically addresses the novel polymers and their applications in clinical medicine. It has been reported by the researchers that, synthetic polymers are not only playing tremendous roles in micro and macro medical-industry but these also play a remarkable role at nano levels as nano-drug carriers in pharmaceuticals. In this review, we will give a brief introduction of polymers and how they are widely being used in medicinal interventions. We will further shed light on the future prospects of polymers with an updated version. [ABSTRACT FROM AUTHOR]

In this work, new polymers were synthesized by condensation polymerization and reacted with sulfonail amide to get drug polymers (poly ester amide) at 90C°using mixture of DMF & dioxane (1:1). Synthetic biomedical polymers and their derivatives are frequently utilised in medical and pharmaceutical purposes. Recently, Specific consideration has been showed to chemical features of biocompatible polymers, since these polymers have an benefit of being quickly hydrolyzed into easy get rid of and non-toxic results which can be subsequently removed via metabolic pathways. The new polymer which has bioactive group's moiety were determined physical features by FTIR & UV techniques. In addition to its biochemical properties. [ABSTRACT FROM AUTHOR]

Asthma is a chronic airway inflammatory disease with complex mechanisms, and these patients often encounter difficulties in their treatment course due to the heterogeneity of the disease. Currently, clinical treatments for asthma are mainly based on glucocorticoid-based combination drug therapy; however, glucocorticoid resistance and multiple side effects, as well as the occurrence of poor drug delivery, require the development of more promising treatments. Nanotechnology is an emerging technology that has been extensively researched in the medical field. Several studies have shown that drug delivery systems could significantly improve the targeting, reduce toxicity and improve the bioavailability of drugs. The use of multiple nanoparticle delivery strategies could improve the therapeutic efficacy of drugs compared to traditional delivery methods. Herein, the authors presented the mechanisms of asthma development and current therapeutic methods. Furthermore, the design and synthesis of different types of nanomaterials and micromaterials for asthma therapy are reviewed, including polymetric nanomaterials, solid lipid nanomaterials, cell membranes-based nanomaterials, and metal nanomaterials. Finally, the challenges and future perspectives of these nanomaterials are discussed to provide guidance for further research directions and hopefully promote the clinical application of nanotherapeutics in asthma treatment.

Liver metastases arising from colorectal cancer (CRC) are a major challenge for cancer treatment, as they often emerge as unresectable and resistant to therapy. Novel treatments targeting the specific metastatic tumor microenvironment (TME) may improve the therapeutic outcome. One relevant receptor at the TME in the liver is the endothelial-expressed cell adhesion molecule E-selectin. In this study, we showed in a mouse model of aggressive CT26-derived liver metastasis, that the delivery of otherwise non-effective Doxorubicin via an E-selectin-targeted polymer-peptide-drug conjugate reduced tumor burden of liver metastases and significantly prolonged survival, with ∼50% of mice being tumor-free. In contrast to B16-derived lung metastases, which can successfully be prevented by a "drug-free" E-selectin-blocking copolymer, neither E-selectin-blocking pre-treatment nor the combination with targeted Doxorubicin-delivery proved beneficial against CT26 liver metastasis. In-depth inquiry revealed that E-selectin-blockade by the "drug-free" copolymer reduced E-selectin expression in metastatic livers, but did not prevent CT26 liver colonization, and increased the prevalence of B-cells, possibly indicating an ambiguous role of these cells. However, it did not significantly alter leukocyte migration into the malignant tissue. Overall, targeting E-selectin with nanomedicines is a highly efficient strategy to treat established liver metastases, while the benefit of E-selectin blockade by itself may depend on tumor type and TME-specific factors. [Display omitted] • Colorectal cancer liver metastases of mice regressed upon a single treatment with E-selectin-targeted polymer-drug conjugate. • Overall, 50% of the P-Esbp-Dox treated mice survived with no disease recurrence. • E-selectin blocking copolymer reduced E-selectin expression in metastatic livers but did not affect metastatic growth. • E-selectin is a viable target for drug delivery, but its blockade may have ambiguous effects at the TME. [ABSTRACT FROM AUTHOR]

Diabetic chronic wounds cause a significant amount of pain to patients because of their low cure rates and high recurrence rates. Traditional approaches to treating diabetic chronic wounds often involve the delivery of drugs or cytokines that regulate the microenvironment and eliminate bacterial infection in the wound area, but they are passive in controlling cell behaviors and may lead to drug resistance. Emerging drug-free wound treatments are important for convenient, effective, and safe treatment strategies. However, the current approaches cannot fully promote tissue regeneration or prevent bacterial infections. Here, the efficacy of a negatively charged fiber dressing in promoting diabetic chronic wound healing is investigated. The negatively charged fiber dressing can generate reactive oxygen species to inhibit bacterial reproduction with the assistance of ultrasound during the inflammatory phase. Furthermore, the dressing provides an electrostatic field that regulates cellular behavior during the inflammatory and proliferative phases. In particular, the dressing can promote fibroblast migration and induce macrophage polarization and neovascularization without any additional drugs. It is demonstrated that this strategy enables the healing of diabetic chronic wounds in a mouse model, achieving effective wound closure over a 12-day treatment cycle and providing a drug-free therapeutic strategy for diabetic chronic wound care., (© 2023 Wiley-VCH GmbH.)

In recent years, the environmental problems accompanying the extensive application of biomedical polymer materials produced from fossil fuels have attracted more and more attentions. As many biomedical polymer products are disposable, their life cycle is relatively short. Most of the used or overdue biomedical polymer products need to be burned after destruction, which increases the emission of carbon dioxide (CO 2 ). Developing biomedical products based on CO 2 fixation derived polymers with reproducible sources, and gradually replacing their unsustainable fossil-based counterparts, will promote the recycling of CO 2 in this field and do good to control the greenhouse effect. Unfortunately, most of the existing polymer materials from renewable raw materials have some property shortages, which make them unable to meet the gradually improved quality and property requirements of biomedical products. In order to overcome these shortages, much time and effort has been dedicated to applying nanotechnology in this field. The present paper reviews recent advances in nanocomposites of CO 2 fixation derived reproducible polymers for biomedical applications, and several promising strategies for further research directions in this field are highlighted., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Liu, Jiang, Xing, Yang, Li and Sun.)