Synthesis of pyrano[3,2-]chromene-2,5-diones from 4-hydroxycoumarins and aminocrotonates under solvent-free conditions.

A new one-pot approach was developed for the construction of pyrano[3,2-]chromene-2,5-diones by reacting 4-hydroxycoumarins with ethyl 3-oxo-3-phenylpropanoates in the presence of ammonium salts or aminocrotonates under solvent-free conditions. The title compounds were formed by intramolecular cyclization through new C-C and C-O bonds. Structure assignment of compound 3e was confirmed by single crystal X-ray analysis.

miRNAome-metabolome wide association study reveals effects of miRNA regulation in eosinophilia and airflow obstruction in childhood asthma.

Background: There are important inter-relationships between miRNAs and metabolites: alterations in miRNA expression can be induced by various metabolic stimuli, and miRNAs play a regulatory role in numerous cellular processes, impacting metabolism. While both specific miRNAs and metabolites have been identified for their role in childhood asthma, there has been no global assessment of the combined effect of miRNAs and the metabolome in childhood asthma.

Methods: We performed miRNAome-metabolome-wide association studies ('miR-metabo-WAS') in two childhood cohorts of asthma to evaluate the contemporaneous and persistent miRNA-metabolite associations: 1) Genetic Epidemiology of Asthma in Costa Rica Study (GACRS) (N = 1121); 2) the Childhood Asthma Management Program (CAMP) (N = 312 and N = 454).

Comparative analysis of heavy metals toxicity in drinking water of selected industrial zones in Gujranwala, Pakistan.

Heavy metal contamination of drinking water, primarily driven by industrial activities, represents a critical challenge, with implications for human health and environmental safety. Gujranwala is an industrial and thickly populated city. The current study aimed to assess and compare heavy metal contamination levels in drinking water from five industrial areas and evaluate their potential impacts on human health.

Medical ambivalence and Long Covid: The disconnects, entanglements, and productivities shaping ethnic minority experiences in the UK.

Structural violence - related to 'isms' like racism, sexism, and ableism - pertains to the ways in which social institutions harm certain groups. Such violence is critical to institutional indifference to the plight of ethnic minority people living with long-term health conditions. With only emergent literature on the lived experiences of ethnic minorities with Long Covid, we sought to investigate experiences around the interplay of illness and structural vulnerabilities.

Exploring the Therapeutic Potential: Ta'līq al-'Alaq (Leech Therapy) for Qarha Khabītha (Non-Healing Ulcer): A Case Study.

Non-healing ulcers are chronic lesions, often found on the lower extremities, persisting for over three months despite adequate care. They are associated with systemic diseases or local disorders and significantly impact the quality of life, often resisting conventional treatments, which can be costly and pose side effects. Ta'liq al-Alaq (leech therapy), a regimen in Ilaj-Bit-Tadbeer of Unani medicine, offers an alternative based on the principle of Istifrāgh (expulsion of morbid humours).