Role of HSF1-upregulated AC6 in ameliorating heart failure in mice

Aberrant HSF1 signaling activation underlies metformin amelioration of myocardial infarction in mice

Myocardial infarction (MI) is a cardiovascular disease with high morbidity and mortality. Clinically, rehabilitation after massive MI often has a poor prognosis. Therefore, it is necessary to explore the therapeutic methods of myocardial protection after MI. As a first-line treatment for type 2 diabetes, metformin has been found to have a certain protective effect on myocardial tissue. However, its pharmacological mechanism remains unclear. In this study, we investigated key factors that reduced MI with metformin. Through in vivo, in vitro, and in silico analyses, we identified HSF1 as a key target for metformin. HSF1 could up-regulate the transcriptional level of AMPKα2 through transcriptional activation and stimulate the activity of the downstream AMPK/mTOR signaling pathway. Metformin stimulated cardiomyocytes to form stress granules (SGs), and knockdown of HSF1 reversed this process. Furthermore, HSF1 exhibited better in vitro affinity for metformin than AMPK, suggesting that HSF1 may be a more sensitive target for metformin.

Living in Mosul during the time of ISIS and the military liberation: results from a 40-cluster household survey

BACKGROUND

In June 2014, an estimated 1500 fighters of the Islamic State of Iraq and Syria (ISIS) seized control of Mosul, Iraq's second city. Although many residents fled, others stayed behind, enduring the restrictive civil and social policies of ISIS. In December 2016, the military activity, known as the liberation campaign, began in east Mosul, concluding in west Mosul in June 2017.

METHODS

To assess life in Mosul under ISIS, and the consequences of the military campaign to retake Mosul we conducted a 40 cluster-30 household survey in Mosul, starting in March 2017. All households included were present in Mosul throughout the entire time of ISIS control and military action.

RESULTS

In June 2014, 915 of 1139 school-age children (80.3%) had been in school, but only 28 (2.2%) attended at least some school after ISIS seized control. This represented a decision of families. Injuries to women resulting from intimate partner violence were reported in 415 (34.5%) households. In the surveyed households, 819 marriages had occurred; 688 (84.0%) among women. Of these women, 89 (12.9%) were aged 15 years and less, and 253 (49.7%) were aged under 18 at the time of marriage. With Mosul economically damaged by ISIS control and physically during the Iraqi military action, there was little employment at the time of the survey, and few persons were bringing cash into households. The liberation of Mosul in 2017 caused extensive damage to dwellings. Overall only a quarter of dwellings had not sustained some damage. In west Mosul, only 21.7% of houses had little or no damage from the conflict, with 98 (21.7%) households reporting their house had been destroyed, forcing its occupants to move. No houses had regular electricity and there was limited piped water. Inadequate fuel for cooking was reported by 996 (82.9%) households.

CONCLUSION

The physical, and social damage occurring during ISIS occupation of Mosul and during the subsequent military action (liberation) was substantial and its impact is unlikely to be erased soon.