Associations between short-term exposure to fine particulate matter and acute myocardial infarction: A case-crossover study.

Background: Previous studies evaluated the impact of particle matters (PM) on the risk of acute myocardial infarction (AMI) based on local registries.

Hypothesis: This study aimed to evaluate possible short term effect of air pollutants on occurrence of AMI based on a specific case report sheet that was designed for this purpose.

Methods: AMI was documented among 982 patients who referred to the emergency departments in Tehran, Iran, between July 2017 to March 2019.

[Mitochondrial DNA diversity in Kazym Khanty].

New data on mitochondrial DNA polymorphism in the representatives of Kazym territorial group of Northern Khanty are presented. MtDNA diversity observed in Kazym Khanty was compared with that in Khanty from Shuryshkarskii raion of Yamalo-Nenets Autonomous Okrug.

[Mitochondrial DNA diversity in Siberian Tatars of the Tobol-Irtysh basin].

Data on the variation of the nucleotide sequence of hypervariable segment I (HVSI) and restriction fragment length polymorphism (RFLP) of the coding region of mitochondrial DNA (mtDNA) have been used to characterize the mitochondrial gene pool of Siberian Tatars of the Tobol-Irtysh basin (N = 218), one of three geographic/linguistic groups of Siberian Tatars. The gene pool of Siberian Tatars has been shown to contain both Asian and European mtDNA lineages at a ratio of 1 : 1.5.