Structure-activity relationship and in vitro inhibition of human CYP2A6 and CYP2A13 by flavonoids.

This study demonstrates the inhibition activity of kaempferol and myricetin and the structure-function relationship of these two flavonoid and previously isolated flavonoids from Vernonia cinerea and Pluchea indica against both enzymes. 3. Kaempferol could inhibit CYP2A6 with Kic value of 1.77 ± 0.47 µM while inhibit CYP2A13 with Kic value of 0.12 ± 0.01 µM. Myricetin could inhibit CYP2A6 with Kic value of 4.06 ± 0.52 µM while inhibit CYP2A13 with Kic value of 1.88 ± 0.03 µM. 4. Molecular docking indicated that CYP2A13 enzyme have strong hydrophobic interaction with ring B of flavonoids compared to CYP2A6 enzyme. The presence of the hydroxyl group at C3 position of ring C and the hydroxyl group at C5' of ring B affected inhibitory activity on both enzymes. PMID: 31578905 [PubMed - as supplied by publisher]
Source: Xenobiotica - Category: Research Authors: Tags: Xenobiotica Source Type: research

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CONCLUSION: Structural prevention measures in addition to behavioral measures enable a reduction of the cancer risk caused by UV radiation. The aim must be to establish these measures nationwide for the entire population. PMID: 32494842 [PubMed - as supplied by publisher]
Source: Der Hautarzt: Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete - Category: Dermatology Tags: Hautarzt Source Type: research
This study sought to determine the incidence rates of all gynecologic, including peritoneal, malignancies in the U.S. Active Duty population compared to the general US population as reported in the Surveillance, Epidemiology, and End Results Program database. MATERIALS AND METHODS: Gynecologic cancers diagnosed in U.S. Active Duty women aged 20-59 between 2004 and 2013 were retrospectively ascertained. Cancer cases were identified in both the Automated Central Tumor Registry and the Military Health System Data Repository. All cases in Automated Central Tumor Registry plus cases recorded in Military Health System Data R...
Source: Military Medicine - Category: International Medicine & Public Health Tags: Mil Med Source Type: research
Publication date: Available online 5 June 2020Source: Gynecologic Oncology ReportsAuthor(s): Maryam Kasraeian, Kamran Hessami, Homeira Vafaei, Nasrin Asadi, Leila Foroughinia, Shohreh Roozmeh, Khadije Bazrfashan
Source: Gynecologic Oncology Reports - Category: OBGYN Source Type: research
Publication date: Available online 4 June 2020Source: Gynecologic Oncology ReportsAuthor(s): María Jesús Rubio, María José Lecumberri, Silvia Varela, Jesús Alarcón, María Eugenia Ortega, Lydia Gaba, Jaime Espinós, Julia Calzas, Pilar Barretina, Isabel Ruiz, Gloria Marquina, Ana Santaballa
Source: Gynecologic Oncology Reports - Category: OBGYN Source Type: research
CONCLUSIONS: Our data provide new insights into the biology driving metastasis in PTCs and highlight how lncRNAs cooperate with coding transcripts to sustain these processes. PMID: 32495722 [PubMed - as supplied by publisher]
Source: Thyroid : official journal of the American Thyroid Association - Category: Endocrinology Tags: Thyroid Source Type: research
CONCLUSIONS: Fusion genes were the most common genetic cause of pediatric PTCs. Fusion gene positive PTCs showed more aggressive behavior than fusion gene negative PTCs. Several novel rearrangements were identified. Fusion genes seem to be a molecular marker number one in pediatric PTC patients. PMID: 32495721 [PubMed - as supplied by publisher]
Source: Thyroid : official journal of the American Thyroid Association - Category: Endocrinology Tags: Thyroid Source Type: research
LUNG CANCER symptoms include difficulty breathing, headaches, and persistent chest pain. But you could also be at risk of an advanced tumour if you develop a subtle sign on your eyes. Could you be at risk of lung cancer?
Source: Daily Express - Health - Category: Consumer Health News Source Type: news
Publication date: Available online 4 June 2020Source: Annals of Medicine and SurgeryAuthor(s): Yasser El Ghamrini, Tamer M.S. Salama, Mohamed I. Hassan, Haytham Mohamed Nasser
Source: Annals of Medicine and Surgery - Category: General Medicine Source Type: research
Publication date: Available online 5 June 2020Source: Clinics and Research in Hepatology and GastroenterologyAuthor(s): Zheng Li, Dongqiang Xu, Xudong Tong, Changxing Shan
Source: Clinics and Research in Hepatology and Gastroenterology - Category: Gastroenterology Source Type: research
Marijuana is widely used, especially in adolescents and young adults. In the US, there are about 20 million users (about 7.5% of people aged 12 or older). Marijuana is a mind-altering (psychoactive) drug. Similar to hemp, it comes from the cannabis plant. The plant’s primary drug effects come from the chemical delta-9-tetrahydrocannabinol, or “THC.” Marijuana is smoked, “vaped” (inhaling the vapor), or ingested in foods or teas. Over the last few decades, the concentration of THC in the cannabis plant has been increasing. In addition, the plant extracts are more potent. Short-term effects of m...
Source: New Harvard Health Information - Category: Consumer Health News Authors: Tags: Behavioral Health Brain and cognitive health Drugs and Supplements Pain Management Source Type: news
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