Delivery System Research Articles

Nanostructured Lipid Carrier for Dermatological Application: A Comprehensive Review and Future Perspective

Abstract:: Dermatological disease states have psychological impacts that affect a patient’s life. In the management of such disorders, topical delivery has an important role. However, the conven-tional topical delivery systems suffer from various limitations, like skin irritation, a minute quan-tity of drugs reaching disease sites, and over and under medication, which leads to an adverse re-action and therapeutic failure, respectively. Therefore, researchers continuously search for an al-ternate delivery system for treating skin disease. In recent years, nanostructured lipid carriers (NLC) have emanated as promising carrier systems for topical delivery. The current review pro-vides an in-depth insight into topical administration for treating a variety of dermatological issues using NLCs as a carrier. This review highlights the suitability of NLCs as carriers for topical de-livery, their method of preparation, and their characterization. In the present review, the main emphasis has been given to the management of various dermatological problems by using NLCs as a carrier; a plethora of literature investigating NLC as the carrier for topical delivery has been included in this review. In this paper, an attempt has been made to provide a summary of the re-search carried out in this field that will encourage further research in this arena.

Herbal Candies: A Potential Source of Health Benefits

Abstract: Candy is a popular product consumed by children, young and elderly alike. The major ingredient sugar makes it an instant source of energy, mostly blended with a variety of flavors and colors for sensory and aesthetic appeal. Flavors such as caramel, chocolate, peppermint, butterscotch, and vanilla are the most popular among many, that comprises of more than 2000 kinds. Although synthetic flavors and colors are predominant, natural sources such as herbs are being increasingly used. Herbal (made from herbs) products have lesser effects, more therapeutic effects, and health benefits. The advantages of herbs used in candy manufacturing are safe, with good efficacy, lower side effect, compatibility with the human body, and wide cultural acceptability. Herbal candies are used as an efficient delivery system for vitamins, minerals, and numerous bioactive compounds like anthocyanin, lycopene, ascorbic acid, etc. They are a remedy of choice in case of cough, sore throat, digestive and stomach problems. The choice of herb often is influenced based on the target health problem, reduced side effects, availability, and preferences. Apart from sugar, these candies are also manufactured using sweetening agents. Sugar and sweeteners consumption is associated with various myths and prejudices owing to increased health concerns. The review is thus designed to justify various aspects of herbal candy like production process, ingredients, historical importance, and types of herbal candies, myths, facts and risks, consumer awareness towards herbal candies. The paper will also draw a roadmap for the future of herbal candy amongst today’s health-wary consumers.

The Astonishing Accomplishment of Biological Drug Delivery using Lipid Nanoparticles: An Ubiquitous Review.

Biotech drugs, including proteins, hormones, enzymes, DNA/RNA therapies, and cell-based treatments, are gaining popularity due to their effectiveness. However, effective delivery systems are needed to overcome administration challenges. Lipid nanoparticles (LNPs) have emerged as promising carriers for various therapies. LNPs are biocompatible, less likely to cause adverse reactions, and can stabilize delicate biological drugs, enhancing their stability and solubility. Scalable and cost-effective manufacturing processes make LNPs suitable for largescale production. Despite recent research efforts, challenges in stability, toxicity, and regulatory concerns have limited the commercial availability of LNP-based products. This review explores the applications, administration routes, challenges, and future directions of LNPs in delivering biopharmaceuticals.

NOVEL AGENTS IN THE MANAGEMENT OF DIABETES AND RISK OF WORSENING DIABETIC RETINOPATHY.

Novel therapies for diabetes have potent effects on glycemic control, obesity, and cardiovascular risk reduction, but some, including the popular drug semaglutide, have also been implicated in worsening of diabetic retinopathy (DR). Given the ubiquity of these new agents, understanding the risks to vision is important. Here, we review the data for several newly available agents in terms of systemic efficacy and retinal safety. Literature review. Novel antihyperglycemic treatments include incretin mimetics and enhancers, sodium-glucose cotransporter inhibitors, long-acting insulins, and insulin delivery systems. All improve glycemic control, and some have been shown to reduce major cardiovascular outcomes. In a pivotal trial, semaglutide was associated with approximately 75% increased risk of DR worsening. The novel long-acting insulin icodec, formulated for once weekly dosing, showed increased risk of DR worsening over a once daily insulin. No other recent antihyperglycemic agent was associated with DR worsening, although following the semaglutide trials, nearly all studies excluded patients with preexisting DR. Cases of DR worsening were rare in all instances. Dedicated safety studies for semaglutide in DR are currently underway. For most patients being considered for treatment with a novel antihyperglycemic agent, benefits on systemic metabolic and cardiovascular health are very likely to outweigh potential retinal harms. Although the true risks of the new agents on DR are unclear because their safety data come from secondary end points, the most vulnerable patients are those with preexisting high-risk DR, poor baseline glycemic control, and using insulin.

3D Printed Personalized Colon-targeted Tablets: A Novel Approach in Ulcerative Colitis Management.

Ulcerative colitis (UC) and Crohn's disease (CD) are two types of idiopathic inflammatory bowel disease (IBD) that are increasing in frequency and incidence worldwide, particularly in highly industrialized countries. Conventional tablets struggle to effectively deliver anti-inflammatory drugs since the inflammation is localized in different areas of the colon in each patient. The goal of 3D printing technology in pharmaceutics is to create personalized drug delivery systems (DDS) that are tailored to each individual's specific needs. This review provides an overview of existing 3D printing processes, with a focus on extrusion-based technologies, which have received the most attention. Personalized pharmaceutical products offer numerous benefits to patients worldwide, and 3D printing technology is becoming more affordable every day. Custom manufacturing of 3D printed tablets provides innovative ideas for developing a tailored colon DDS. In the future, 3D printing could be used to manufacture personalized tablets for UC patients based on the location of inflammation in the colon, resulting in improved therapeutic outcomes and a better quality of life.

A Comprehensive Review on Imperative Role of Ionic Liquids in Pharmaceutical Sciences.

Ionic liquids (ILs) are poorly-coordinated ionic salts that can exist as a liquid at room temperatures (or <100 °C). ILs are also referred to as "designer solvents" because so many of them have been created to solve particular synthetic issues. ILs are regarded as "green solvents" because they have several distinctive qualities, including better ionic conduction, recyclability, improved solvation ability, low volatility, and thermal stability. These have been at the forefront of the most innovative fields of science and technology during the past few years. ILs may be employed in new drug formulation development and drug design in the field of pharmacy for various functions such as improvement of solubility, targeted drug delivery, stabilizer, permeability enhancer, or improvement of bioavailability in the development of pharmaceutical or vaccine dosage formulations. Ionic liquids have become a key component in various areas such as synthetic and catalytic chemistry, extraction, analytics, biotechnology, etc., due to their superior abilities along with highly modifiable potential. This study concentrates on the usage of ILs in various pharmaceutical applications enlisting their numerous purposes from the delivery of drugs to pharmaceutical synthesis. To better comprehend cuttingedge technologies in IL-based drug delivery systems, highly focused mechanistic studies regarding the synthesis/preparation of ILs and their biocompatibility along with the ecotoxicological and biological effects need to be studied. The use of IL techniques can address key issues regarding pharmaceutical preparations such as lower solubility and bioavailability which plays a key role in the lack of effectiveness of significant commercially available drugs.

Novel 3D printed capsule to work as an auxiliary for enteric-coating for gastroprotective drug delivery system.

In the current research work, 3d printed capsules were printed by using FDM based 3D printer. A model drug punched into matrix tablets was put inside and encapsulated in the capsule. It was compared with the highly advanced ready-to-fill enteric-coated capsule Eudracap™ capsule. Solid Works and slicing software were used to design and cast off the shape of the capsule shell. The design of the cap and body was made and capsules were printed accordingly. All were evaluated for acid uptake and disintegration tests. In an acidic medium at pH 1.2, it has not been disintegrated or opened. While in the intestinal pH at 6.8 body and cap got separated after 45 ± 05 min. All sizes of capsules were also assessed for dosage form they can uphold. This could be a good option for customized drug delivery for human and animal studies.

Conjugation of Doxorubicin and Carbon-based-nanostructures for Drug Delivery against HT-29 Colon Cancer Cells.

A drug delivery system is the method or process of administering a pharmaceutical compound to achieve a therapeutic effect in humans or animals. Such systems release the drugs at specific amounts in a specific site. The carbon based-nanomaterials have been actively used as drug carriers to treat various cancer. This study aimed to evaluate the cytotoxic effects of DOX-GO, DOX-OMC and DOXCNT in colon cancer cells (HT29). We reported platforms based on graphene oxide (GO), ordered mesoporous carbon (OMC) and carbon nanotubes (CNT) to conjugate with doxorubicin (DOX). The conjugation of DOX with carbon nanomaterial was investigated by UV-Vis spectroscopy, field emission scanning electron microscope (FE-SEM) and cyclic voltammetry (CV) methods. We showed that graphene oxide was a highly efficient matrix. Efficient loading of DOX, 89%, 78%, and 73.5% at pH 7.0 was seen onto GO, OMC and CNT, respectively. Upon pH 4. 0 after 15 h, 69%, 61% and 61% of DOX could be released from the DOX-GO, DOX-OMC and DOX-CNT, respectively, which illustrated the significant benefits of the developed approach for carbon nanomaterial applications. In vitro cytotoxicity analysis showed greater cytotoxicity of DOX/GO, DOX/OMC and DOX/CNT in comparison with GO, OMC and CNT against HT29 colon cancer cells with cell viability of 22%, 40% and 44% after 48 h for DOX-GO, DOX-OMC and DOX-CNT, respectively. The nanohybrids based on DOX-carbon nanomaterial, because of their unique physical and chemical properties, will remarkably enhance the anti-cancer activity.

Carbon Nanotubes: A Targeted Drug Delivery against Cancer Cell

Abstract: Drug delivery in human subjects has been the most difficult task since the ancient time of the medical sector. An ideal drug delivery system is, one that minimizes the adverse effects and maximizes the desired effects of the drug candidate. Various drug delivery systems have been developed that may have some kind of advantages and disadvantages, among them targeted drug delivery system is more preferable and convenient which may employ various nanoparticles or other materials for the drug delivery at the specified site of action. In this, the authors elaborately and comprehensively explained the role of recent carbon nanotubes (CNTs) in targeted drug delivery systems (specifically for targeting cancerous cells). The authors also described the methods of preparation of CNTs, characterization techniques for CNTs, cellular penetration of, CNTs, and the associated toxicities with CNTs. Carbon nanotubes are preferable to other nanoparticles because they are more electrically, mechanically, and organically stable than others, they can carry more amount of drug in comparison to other nanoparticles and their functionalization property makes them more attractive as a carrier molecule for targeting any root cause of the disease.

In Vitro Preparation and Evaluation of Alendronate-modified Hyaluronic acid-based Nanomicelles as a Bone-Targeted Drug Delivery System

Nanomicelles based on Hyaluronic acid (HA), a linear polysaccharide with high affinity to the CD44 receptor on cancerous cells, offer considerable potential to transport drugs to the target tissue while reducing exposure to normal tissues. The high affinity of alendronate (ALN) to hydroxyapatite crystals, the crucial component of bone, makes it an ideal candidate for bone-targeted delivering therapeutic nanoparticles. Here, we developed targeted and self-assembled nanocarriers by modifying HA nanomicelles with ALN to attach to hydroxyapatite. Curcumin (CUR), as a hydrophobic model drug, was used to evaluate the efficiency of developed nanomicelles. The size of blank and CUR-loaded nanomicelles was below 200 nm and their critical micelle concentrations were in the range of 38 μg/ml, which is suitable for delivery to bone tissue. The CUR-loaded ALN-HA-AC (CUR@ALN-HA-AC) nanomicelles showed a two-step release pattern, a first accelerated release period (12% in 1 h) followed by a sustained release (65% up to 50 h). The hydroxyapatite affinity experiment indicated that CUR@ALN-HA-AC nanomicelles exhibited significantly high affinity to the bone. Cytotoxicity studies on MG-63 cell lines demonstrated that CUR-loaded micelles exhibited much higher cytotoxic activity compared to free CUR, indicating that encapsulation in HA-ALN-AC micelles significantly enhanced the tumor cell-killing ability of CUR.

Nanomedicine as a Better Therapeutic Approach: An Overview

Abstract: The fields of nanotechnology and nanomedicine have undergone a revolution. There has been a striking rise in authorized nanomedicines since 1980. Apart from functioning as thera-peutic agents, they also act as carriers for delivering various active pharmaceuticals to target or-gans. The ultimate goal of nanomedicine has always been the generation of translational technol-ogies that can improve current therapies. Nanocrystals, nanotubes, liposomes, exosomes, solid li-pid nanoparticles, polymeric nanoparticles, and metallic and magnetic nanoparticles are examples of nanostructures that are now in the market as well as in ongoing research. The preparation of these nanomaterials requires consideration of a number of difficulties. Only a few of these nano-materials were successful in obtaining marketing permission after passing all required toxicologi-cal and ethical evaluations and making them affordable to users and, at the same time, profitable to investors. Cancer, central nervous system (CNS) diseases, and cardiovascular (CVS) diseases represented the primary targets of nanotechnology applied to medicine. Therefore, this review ar-ticle is focused on providing a summary of several nano-based delivery systems, including their limitations and prospects in different therapeutic fields.

Hair follicle-targeted delivery for hair recoloration using scalp-curvature-conforming microneedles based on sodium alginate and polyvinylpyrrolidone

Hair-related disorders are currently widely concerned issues for not only the scientific society but also the public attentions. Microneedle-based drug delivery system has been regarded as a promise hair follicle-targeted drug delivery approach, largely because they can effectively penetrate the stratum corneum barrier and deliver drugs to hair follicles within dermis. However, the currently reported microneedles for treating hair-related disorders usually rely on rigid backings, showing poor adaptability to the curved scalp and thereby restricting their usability for hair follicles targeted drug delivery. To this end, this study utilized sodium alginate and polyvinylpyrrolidone to construct a scalp-curvature-conforming microneedle with flexible backing. Subsequently, Psoralea corylifolia extract (PE) was loaded into the microneedles to investigate its capability in delivering PE to the hair follicle site for treating leukotrichia associated with vitiligo. These PE-loaded microneedles can effectively conform to the curvature of skin, enhancing the efficiency of microneedle insertion and ensuring stable drug delivery. Moreover, animal studies demonstrate that the PE loaded microneedles can effectively penetrate the stratum corneum, benefiting the drug delivery to hair follicles located site, and consequently showing a successful inhibition of hair graying. In summary, the present study reports a design and preparation of scalp-curvature-conforming microneedle. This design may offer a potential solution for efficient drug delivery using microneedles to the curved skin.

Electronic nicotine delivery system flavors, devices, and brands used by adults in the United States who smoke and formerly smoked in 2022: Findings from the United States International Tobacco Control Four Country Smoking and Vaping Survey

ObjectiveThis study estimated prevalence of current electronic nicotine delivery systems (ENDS) used by US adults who smoked cigarettes or formerly smoked in 2022 and assessed ENDS flavors, devices, and brands used most often. MethodsData are from the 2022 US ITC Smoking and Vaping Survey. Respondents were recruited from a web panel of a nationally representative sample of US adults ages 18+ who smoked, formerly smoked, and/or vaped ENDS. Using weighted data, we estimated prevalence of current vaping among adults who smoke or formerly smoked (N = 2,016). Among the subset who vaped (n = 554), we assessed flavors and devices used most often. Using unweighted data, we assessed the frequency (count) of reported brands used most often. ResultsIn 2022, 22.0 % of US adults who smoked or formerly smoked were vaping at least monthly. A significantly higher proportion of adults who formerly smoked and/or were younger (18–39) were vaping than adults who were smoking and/or were older (40+) (both p < 0.001). Tank devices were used most often (34.7 %), followed by disposables (27.4 %), pre-filled pods/cartridges (23.0 %), and refillable pods/cartridges (14.9 %). The five most commonly used flavors were fruit (33.9 %), tobacco (20.1 %), menthol (12.2 %), candy/sweets (10.8 %), and mixed ice flavors (10.0 %). The top 5 brands were JUUL, Smok, Vuse, Geekvape, and Blu. ConclusionsIn 2022, a majority of adults who smoked cigarettes or who had quit smoking used a variety of flavors and devices that go beyond the choices that FDA currently has authorized for sale.

Recent Approaches on Molecular Markers, Treatment and Novel Drug Delivery System Used for the Management of Colorectal Cancer: A Comprehensive Review.

Colorectal cancer affects 1 in 25 females and 1 in 24 males, making it the third most frequent cancer with over 6,08,030 deaths worldwide, despite advancements in detection and treatments, including surgery, chemotherapeutics, radiotherapy, and immune therapeutics. Novel potential agents have increased survival in acute and chronic disease conditions, with a higher risk of side effects and cost. However, metastatic disease has an insignificant long-term diagnosis, and significant challenges remain due to last-stage diagnosis and treatment failure. Early detection, survival, and treatment efficacy are all improved by biomarkers. The advancement of cancer biomarkers' molecular pathology and genomics during the last three decades has improved therapy. Clinically useful prognostic biomarkers assist clinical judgment, for example, by predicting the success of EGFR-inhibiting antibodies in the presence of KRAS gene mutations. Few biomarkers are currently used in clinical settings, so further research is still needed. Nanocarriers, with materials like Carbon nanotubes and gold nanoparticles, provide targeted CRC drug delivery and diagnostics. Light-responsive drugs with gold and silica nanoparticles effectively target and destroy CRC cells. We evaluate the potential use of the long non-coding RNA (non-coding RNA) oncogene plasmacytoma variant translocation 1 (PVT1) as a diagnostic, prognostic, and therapeutic biomarker, along with the latest nanotech breakthroughs in CRC diagnosis and treatment.

Toxicity of a management bait for grass carp (Ctenopharyngodon idella) incorporated with Antimycin A.

No current technology can specifically target grass carp (Ctenopharyngodon idella) for control within aquatic ecosystems. Rotenone and Carbon Dioxide-Carp are currently the only available registered pesticides for grass carp; they are nonselective and typically applied throughout the water, equally exposing target and native species. A more selective control tool or pesticide application could be used by resource managers to support mitigation efforts. Development of delivery systems that exploit carp feeding strategies could increase selectivity of pesticides and minimize effects on native fishes. A pesticide with selective delivery could be less labor intensive and used within an integrative pest management strategy. The present study examined Antimycin A toxicity in juvenile and sub-adult grass carp and rainbow trout (Oncorhynchus mykiss) across two routes of exposure. Water-based toxicity studies were used to calculate the concentration to cause lethality in 50% of treated fish (LC50) at 24-h, while oral gavage toxicity studies were used to calculate the dose to cause lethality in 50% of treated grass carp and rainbow trout (LD50) 24- to 96-h. Although rainbow trout were more sensitive than grass carp to Antimycin A through water-based exposure, oral toxicity was similar between species, even with inherent gastrointestinal morphological differences. Successful delivery of a lethal dose of Antimycin A to grass carp was achieved through an oral route of exposure using the rapeseed bait and shows promise for registration as a control tool and eventual use in pest management plans. Although a lethal dose of Antimycin A could be incorporated into a single bait pellet, more bait was required to achieve desired mortality when fed to fish under laboratory conditions.

Dexamethasone-releasing PLGA films containing sucrose particles as porogens

The objective of this study was to investigate the use of sucrose particles as a porogen for preparing porous poly (lactide-co-glycolide) (PLGA) films containing dexamethasone by solvent casting technique to modulate PLGA degradation and drug release. Increasing the sucrose content up to 30 % decreased PLGA degradation and extended the drug release duration, a further increase to more than 60 % shortened the release duration. Sucrose created cavities and increased the internal pore surface area for the exchange of degraded acidic oligomers and monomers. This process decreased the autocatalysis within the PLGA matrix, resulting in slower drug release at lower sucrose content. At higher sucrose content, the interconnectivity of the PLGA matrix increased, accelerating the drug release of the entrapped drug. Decreasing the particle size of sucrose has a similar impact on PLGA degradation and drug release as increasing sucrose content. Smaller sucrose particles formed more cavities and a larger overall acidic exchange surface areas. Only 20% nanosized sucrose resulted in a quasi-linear release profile with interconnected sucrose particles, while 60% micronized or 100% non-micronized sucrose particles were necessary to achieve the same effect. In conclusion, modifying the content and particle size of sucrose effectively altered PLGA degradation and drug release, with nanosized sucrose being the most effective porogen. The data obtained with PLGA films could be potentially applied to other PLGA drug delivery systems such as microparticles or implants.

An Estimation of Baricitinib by AQbD-driven UV Spectrophotometry Development and Validation Process

Background: Baricitinib (BCTB) is a novel Janus Kinase (JAK) 1 and 2 inhibitor used in the therapy of rheumatoid arthritis, approved by the “Food and Drug Administration” in 2018. It has significant dose-dependent effectiveness and severe side effects. Thus, it is crucial to figure out its concentration in developed dosage forms. The literature search revealed that there has only been one UV spectroscopy technique documented up to this point. Methanol was chosen as the detection medium in this approach, which is not comparable with plasma or serum. As a result, the preliminary research suggested developing a UV spectroscopic approach that can estimate BCTB concentration and compare it to its concentration in the plasma or serum. Thus, in the proposed method, 7.4 pH phosphate buffer was selected as a mobile phase. Aim: Using the Analytical Quality by Design (AQbD) methodology, a simple, robust spectrophotometric method for the detection of BCTB in API form and Niosomes drug delivery system is designed and assessed. Methods: In the AQbD approach, a face-centered CCD design of Design Expert 13 software was used to evaluate two critical method variables: scanning speed and sampling interval. The design space suitability was confirmed by standard error and overlay plots. The 2-D contour and 3-D response surface plots were used to forecast the relationship between the response variable and predictor variables. Results: Baricitinib displays an absorption maximum at 249.40 nm in saline phosphate buffer pH 7.4. The distinguished linearity of the method was obtained over a concentration of 5–30 µg/ml with a correlation coefficient (R2 ) value of 0.998. BCTB % assay was found to be near 99 %. Intraday and Interday precision were found to have % RSDs of 0.067–0.488 and 0.146–0.942, respectively. Conclusion: The established spectrophotometric technique was observed to be precise as per ICH revised guidelines ICH Q2 (R1) and Q14 for analytical method validation. Our findings are instructional for the future design and development of safe and reliable therapeutic dosage forms of BCTB for rheumatoid arthritis.

Nanorevolution Unleashing the Power of Nanotechnology

Abstract: Nanotechnology, the manipulation of matter at the nanoscale, has been an extraordi-nary scientific frontier that has revolutionized various fields, with one of the most promising ap-plications being in the realm of medicine. Nanomedicine, an interdisciplinary field at the intersec-tion of nanotechnology and medicine, holds tremendous potential to transform the landscape of healthcare, diagnosis, and treatment. This abstract delves into the burgeoning advancements of nanotechnology in nanomedicine, highlighting its significance, potential benefits, and ethical con-siderations. The primary focus of nanomedicine is to engineer and utilize nanoscale materials, such as nano-particles and nanostructures, to improve the effectiveness and precision of medical interventions. Nano-sized drug delivery systems can target specific cells or tissues, enhancing therapeutic out-comes and reducing side effects. These nanocarriers can penetrate biological barriers and accu-mulate at disease sites, enabling more efficient drug delivery and increasing the bioavailability of therapeutic agents. Furthermore, nanotechnology has opened new horizons in medical imaging. Nanoparticles can be engineered to be responsive to certain diseases or conditions, providing val-uable information for early detection and precise diagnosis. Novel contrast agents based on na-nomaterials have the potential to revolutionize imaging techniques, offering higher sensitivity and specificity, ultimately leading to improved patient outcomes. Beyond diagnostics and drug delivery, nanotechnology is fostering breakthroughs in regenerative medicine. Nanomaterials can act as scaffolds, guiding tissue repair and promoting cellular regen-eration. By harnessing the unique properties of nanoscale materials, tissue engineering, and organ transplantation may witness unparalleled advancements, bringing hope to countless patients awaiting life-saving treatments. However, the unprecedented potential of nanomedicine also rais-es ethical concerns that demand careful consideration. As nanotechnology progresses, concerns about the safety of nanomaterials, potential toxicity, and long-term effects must be addressed to ensure responsible and sustainable development.

Construction of an intelligent pH-sensitive hydrogel drug delivery system and its application in gastric ulcer treatment

The occurrence of gastric ulcer is mainly due to the damage of gastric mucosa which leads to inward flow of gastric acid to corrode the gastric cavity, thus producing gastric fever, vomiting, loss of appetite and other adverse reactions. Prevention and treatment of such injuries are crucial. In this study, a simple and non-toxic composite hydrogel (PLGA/CMCS) was prepared through Schiff base reaction between poly(lactic-co-glycolic acid) (PLGA) and carboxymethyl cellulose (CMCS). Subsequently, compound 1 was loaded onto it to construct PLGA/CMCS@1. A series of structural characterization and performance experiments were conducted on these novel hydrogel polymers. Furthermore, we detected the gene expression level of Fas/FasL apoptotic pathway after treating the cells with different concentrations of PLGA/CMCS@1 through an ethanol-induced damaged gastric mucosal epithelial cell model. The results showed that the system was able to significantly regulate the expression of genes related to the apoptotic pathway. The system can regulate the Fas/FasL apoptosis pathway to treat gastric ulcer.

Developments in Emerging Topical Drug Delivery Systems for Ocular Disorders.

According to the current information, using nano gels in the eyes have therapeutic benefits. Industry growth in the pharmaceutical and healthcare sectors has been filled by nanotechnology. Traditional ocular preparations have a short retention duration and restricted drug bioavailability because of the eye's architectural and physiological barriers, a big issue for physicians, patients, and chemists. In contrast, nano gels can encapsulate drugs within threedimensional cross-linked polymeric networks. Because of their distinctive structural designs and preparation methods, they can deliver loaded medications in a controlled and sustained manner, enhancing patient compliance and therapeutic efficacy. Due to their excellent drugloading capacity and biocompatibility, nano-gels outperform other nano-carriers. This study focuses on using nano gels to treat eye diseases and provides a brief overview of their creation and response to stimuli. Our understanding of topical drug administration will be advanced using nano gel developments to treat common ocular diseases such as glaucoma, cataracts, dry eye syndrome, bacterial keratitis, and linked medication-loaded contact lenses and natural active ingredients.