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Autosomal short tandem repeats (STRs) are crucial in identifying humans. Herein, a developmental validation was performed for a newly generated autosomal STR kit (Microreader™ 36A ID System). The sensitivity of this kit was fine when the input DNA dropped down to 0.02 ng/uL. Mixture analysis showed that when male:female = 200 pg: 5400 pg, full profiles of both individuals could be obtained. When inhibited substances existed, all alleles were acquired up to 2000 μM haematin, 1000 ng/μL humic acid or 250 ng/μL tannic acid. The kit exhibited a high precision level with no more than 0.29 nt standard deviation of allele size, with the accuracy (the difference of allele size between the true allele and ladder allele) no more than 0.4 nt. The total discrimination power of this system in the Chinese Han and Hui population was larger than 1–0.1 × 10−30. For the full-sibling test, the identical-by-state (IBS) score varied from 37 to 46, while it was from 21 to 28 when using the AGCU Express marker 22 STR Kit. This kit can increase the autosomal STR information of a single PCR reaction and is promising in the casework of forensic genetic as well as database construction. [ABSTRACT FROM AUTHOR]

Plentiful studies have clarified miRNAs take on a key role in the sexual dysfunction of diabetic rats. This study aimed to figure out microRNA (miR)-503-5p/SYDE2 axis' latent mechanisms in streptozotocin-induced diabetic rat sexual dysfunction. A model of erectile dysfunction (ED) in diabetic rats was established by injecting streptozotocin. MiR-503-5p and SYDE2 in ED rats were altered by injection of miR-503-5p mimic or si/oe-SYDE2. The targeting link between miR-503-5p and SYDE2 was testified. ICP/MAP value was tested by pressure sensor; Penile capillary abundance was assessed; Penile cGMP and AGEs were detected; penile smooth muscle cell apoptosis was assessed; MiR-503-5p and SYDE2 were tested. In streptozotocin-induced ED rats, miR-503-5p was reduced and SYDE2 was elevated. Elevating miR-503-5p or silencing of SYDE2 can enhance penile erection rate, ICP/MAP value, capillary abundance, and cGMP but reduce AGEs and penile smooth muscle cell apoptosis rate in ED rats. Strengthening SYDE2 with elevating miR-503-5p turned around the accelerating effect of elevated miR-503-5p on penile erection in ED rats. SYDE2 was a downstream target gene of miR-503-5p. MiR-503-5p protects streptozotocin-induced sexual dysfunction in diabetic rats by targeting SYDE2.

Regio-, stereo-, and facial selective [4 + 2] cycloadditions between highly activated vinyl sulfones and 1,3-dienes derived from (R)-4-tert-butyldimethylsilyloxy-2-cyclohexen-1-one provide a powerful approach for the asymmetric synthesis of compounds containing the bicyclo[2.2.2]octanone carbon skeleton. This new methodology has been successfully applied to the asymmetric synthesis of the cis-decalin core structure of the potent anticancer marine natural products superstolides A and B., (© 2011 American Chemical Society)