Continuous flow solvent-free and catalyst-free mechanochemical production of rhodamine B dyes and their derivatives.

In this communication, we have described a simple and efficient, catalyst free and solvent-free protocol for the continuous flow synthesis of rhodamine B dyes developed from 3-diethyl amino phenol and phthalic anhydride. Nearly 95% conversion was achieved within 12 min using a jacketed single screw reactor. This method is further used for the synthesis of six derivatives with 70-84% yield, which can be compared to 85% yield from a 1-hour long batch synthesis involving a catalyst.

Role of neoadjuvant pembrolizumab in advanced melanoma.

Melanoma, a malignancy originating from melanocytes, poses a significant global health challenge, with approximately 325,000 cases and 57,000 deaths annually. Advanced melanoma (AM), categorized as stage III and IV, presents considerable treatment challenges due to its complex mutational landscape. Traditional treatment options have included checkpoint inhibitors and BRAF inhibitors, with pembrolizumab emerging as a promising agent.

Anatomical Variation of the Olfactory Fossa According to Keros and Yenigun Classifications in Karachi, Pakistan.

Aim: The goal of our research is to assess the olfactory fossa anatomical variation through Keros and Yenigun classification by computed tomography (CT) scan of paranasal sinuses (PNS), as in order for surgeons to prevent major complications, they must be familiar with its variations in anatomy during functional endoscopic sinus surgery (FESS) related to anterior ethmoidal artery injury, as its course varies with depth and length of the olfactory fossa.

Methods: At Karachi's Dow University of Health Sciences (DUHS), retrospective research was carried out. From anterior to posterior, sequential coronal and axial pictures were examined, and the existence and location of further anatomical characteristics were documented.

The current state of primary healthcare in Pakistan: a way forward for low-to-middle income countries.

Background: Primary healthcare (PHC) plays a crucial role in improving health outcomes and reducing healthcare burden, especially in low-to-middle-income countries (LMICs). However, PHC has not received adequate attention in Pakistan despite its recognized importance. This study aims to examine the current state of PHC in Pakistan, identifying factors compromising its quality and effectiveness.

Glycopolymeric Nanoparticles Enrich Less Immunogenic Protein Coronas, Reduce Mononuclear Phagocyte Clearance, and Improve Tumor Delivery Compared to PEGylated Nanoparticles.

Nanoparticles (NPs) offer significant promise as drug delivery vehicles; however, their efficacy is often hindered by the formation of a protein corona (PC), which influences key physiological responses such as blood circulation time, biodistribution, cellular uptake, and intracellular localization. Understanding NP-PC interactions is crucial for optimizing NP design for biomedical applications. Traditional approaches have utilized hydrophilic polymer coatings like polyethylene glycol (PEG) to resist protein adsorption, but glycopolymer-coated nanoparticles have emerged as potential alternatives due to their biocompatibility and ability to reduce the adsorption of highly immunogenic proteins.