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1.
Artículo en Inglés | MEDLINE | ID: mdl-34574455

RESUMEN

Eastern herbal medicines (HMs) are plant-derived naturally occurring substances with minimum or no industrial processing that have long been used in traditional medicine. Aflatoxins are frequent contaminants of plants. Therefore, these mycotoxins are likely to contaminate HMs and pose a health risk to individuals using them on a regular basis as preventive or curative treatments of various diseases. The present study aimed to determine aflatoxin levels in the most popular Pakistani HM formulations and to assess the health risk associated with the intake of aflatoxins. A total of 400 samples of HM formulations collected from four districts of Punjab were analyzed for the quantification of aflatoxins, out of which 52.5% were found to be contaminated. The average daily dose (ADD) of AFB1 and AFs through the intake of HM formulations ranged between 0.00483 and 0.118 ng/kg bw/day and between 0.00579 and 1.714 ng/kg bw/day, respectively. The margin of exposure (MOE) and population cancer risk ranged from 99.49 to 29378.8 and from 0.00011 to 0.0325 liver cancer cases/105 individuals/year (0.0075-2.455 liver cancer cases/105 individuals/75 years), respectively. Despite the low exposure to aflatoxins from HM formulations in the four studied Punjab (Pakistan) districts, the frequent contamination of the analyzed samples suggests that official measures should be considered to manage the associated risk.


Asunto(s)
Aflatoxinas , Neoplasias Hepáticas , Aflatoxinas/análisis , Contaminación de Alimentos/análisis , Humanos , Pakistán , Medición de Riesgo
2.
J Ethnopharmacol ; 271: 113805, 2021 May 10.
Artículo en Inglés | MEDLINE | ID: mdl-33465442

RESUMEN

ETHNOPHARMACOLOGICAL RELEVANCE: Syzygium cumini (L.) Skeels is an important medicinal plant utilized in the health care systems of Pakistan, India, Sri Lanka, and Bangladesh. S. cumini have been used to treat renal issues, indigestion, diabetes, dysentery, and employed in folk medicine to treat inflammations. It is known to anticipate antioxidant, anti-inflammatory, anticancer, anti-diabetic, anti-bacterial, antifungal, activities, and radioprotective activities. MATERIAL AND METHODS: We examined the in vitro anti-inflammatory activities of S. cumini fruit extracts, evaluated using membrane stabilization, egg albumin denaturation, and bovine serum albumin denaturation assays. In vivo anti-inflammatory activity was also assessed, using murine models of carrageenan, formaldehyde, and PGE2 induced paw edema. Fractionation of active extracts was performed using HPLC, followed by LC-ESI-MS/MS analysis to identify the bioactive compounds responsible for anti-inflammatory activity. RESULTS: The crude methanolic extract showed stronger in vitro and in vivo anti-inflammatory activities compared to other extracts. The most potent effects were observed in the formaldehyde induced paw edema assay wherein methanolic extract and standard indomethacin induced 72% and 88% inhibition against paw edema volume in comparison to control (normal saline) respectively. In the bovine serum albumin denaturation assay the methanolic extract induced 82% inhibition against denaturation as compared to control (phosphate buffer) while standard diclofenac sodium induced 98% inhibition. In contrast, 50% v/v MeOH:H2O or 100% dichloromethane extracts displayed moderate to weak effects in the anti-inflammatory models. HPLC fractionation provided 6 active sub-fractions, four (MF2, MF3, MF6, MF7) from the 100% methanolic extract and two (HAF1, HAF3) from the 50% methanolic extract. The MF2, MF7, and HAF1 sub-fractions displayed potent activity in all studied in vitro assays. LC-ESI-MS-MS analysis tentatively identified delphinidin 3-glucoside, peonidin-3,5-diglucoside, gallic acid, liquitrigenin, scopoletin, umbelliferon, and rosmanol from the 100% methanolic fractions. Myricetin, catechin, quinic acid, chlorogenic acid, ellagic acid, gallic acid, and caffeic acid were identified in the 50% methanolic fractions. CONCLUSIONS: These results demonstrate that S. cumini fruit extracts are a rich source of bioactive compounds that are worthy of further investigation as leads for anti-inflammatory drug discovery.


Asunto(s)
Antiinflamatorios/farmacología , Antioxidantes/farmacología , Edema/tratamiento farmacológico , Extractos Vegetales/farmacología , Syzygium/química , Animales , Antiinflamatorios/química , Antiinflamatorios/uso terapéutico , Antioxidantes/química , Antioxidantes/uso terapéutico , Asia , Modelos Animales de Enfermedad , Edema/inducido químicamente , Traumatismos de los Pies/inducido químicamente , Traumatismos de los Pies/tratamiento farmacológico , Traumatismos de los Pies/patología , Frutas/química , Técnicas In Vitro , Medicina Tradicional , Ratones , Fitoquímicos/análisis , Fitoquímicos/química , Extractos Vegetales/uso terapéutico , Ratas Wistar
3.
J Ayub Med Coll Abbottabad ; 28(2): 219-223, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-28718557

RESUMEN

BACKGROUND: Leeches are a well-recognized treatment for congested tissue. This study reviewed the efficacy of leech therapy for salvage of venous congested flaps and congested replanted or revascularized hand digits over a 2-year period. METHODS: All patients treated with leeches between 1 Oct 2010 and 30 Sep 2012 (two years) at Queen Elizabeth Hospital, Birmingham, UK were included in the study. Details regarding mode of injury requiring reconstruction, surgical procedure, leech therapy duration, subsequent surgery requirement and tissue salvage rates were recorded. RESULTS: Twenty tissues in 18 patients required leeches for tissue congestion over 2 years: 13 men and 5 women. The mean patient age was 41 years (range 17-79). The defect requiring reconstruction was trauma in 16 cases, following tumour resection in two, and two miscellaneous causes. Thirteen cases had flap reconstruction and seven digits in six patients had hand digit replantations or revascularisation. Thirteen of 20 cases (65%) had successful tissue salvage following leech therapy for congestion (77% in 10 out of 13 flaps, and 43% in 3 of 7 digits). The rate of tissue salvage in pedicled flaps was good 6/6 (100%) and so was in digital revascularizations 2/3 (67%), but poor in digital re-plants 1/4 (25%) and free flaps 0/2 (0%). CONCLUSIONS: Leeches are a helpful tool for congested tissue salvage and in this study, showed a greater survival benefit for pedicled flaps than for free flaps or digital replantations.


Asunto(s)
Hiperemia , Aplicación de Sanguijuelas , Colgajos Quirúrgicos , Adolescente , Adulto , Anciano , Animales , Femenino , Hirudo medicinalis , Humanos , Hiperemia/etiología , Hiperemia/terapia , Masculino , Persona de Mediana Edad , Neovascularización Fisiológica , Estudios Retrospectivos , Colgajos Quirúrgicos/efectos adversos , Colgajos Quirúrgicos/irrigación sanguínea , Adulto Joven
4.
Int J Food Sci Nutr ; 65(6): 661-6, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24725173

RESUMEN

The present study aims at highlighting the nutritive potential of pomegranate peel and its possible utilization as an ingredient of choice to nutritionally enrich cookies. Biochemical composition and free radical scavenging features of pomegranate peel powder (PoP) and PoP supplemented cookies were measured. PoP supplementation significantly (p < 0.05) improved dietary fibers (0.32-1.96 g/100 g), total phenols (90.7-161.9 mg GAE/100 g) and inorganic residues (0.53-0.76 g/100 g) of cookies. Similarly, significant increase in Ca, K, Fe and Zn levels was noted in supplemented cookies. Almost 50% 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity was recorded in cookies carrying highest concentration of PoP and phenolic contents. PoP phenolics of supplemented cookies were shown to reduce oxidative degradation during four months storage. Present study suggests PoP supplementation in baked products as a potential source of micro and macronutrients. Application of PoP in ready to serve foods seems to be a potential disease preventive and ameliorative approach in tandem with its preservation and nutritional enhancement features.


Asunto(s)
Antioxidantes/farmacología , Dieta , Alimentos Fortificados/análisis , Frutas/química , Lythraceae/química , Valor Nutritivo , Fenoles/farmacología , Compuestos de Bifenilo/metabolismo , Culinaria , Fibras de la Dieta/análisis , Suplementos Dietéticos , Conservación de Alimentos , Humanos , Oxidación-Reducción , Picratos/metabolismo , Preparaciones de Plantas/química , Sensación , Oligoelementos/análisis
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