A number of isolates of the aggressive an d non‐aggressive pathotype group of the rape seed (Brassica napus) pathogen Phoma lingam (teleomorph: Leptosphaeria maculans) were analyzed by means of a simple, random primer dependent PCR (polymerase chain reaction) approach. Using the four synthetic nona‐ and decamer oligonucleotides 5′‐GGAGCCCAC‐3′, 5″‐ACGGTCTTGG‐3′, 5′GAAACAGCGG‐3′, and 5′‐GGCATCGGCC‐3′ informative bands for both of the pathotype groups could be obtained. These amplified bands were shown to originate not only from repeated but also from single and low copy target sequences. This is the first report on molecular diagnostics of a plant pathogenic fungus, based on random primer dependent PCR. The experimental system is fast and reliable, does not require cloning and sequencing of L. maculans DNA, and works without time‐consuming blotting or hybridization steps.
The incidence of postoperative nausea and vomiting (PONV) can be as high as 80% in patients with risk factors (e.g., females, history of motion sickness). PONV delays postoperative recovery and costs several hundred million dollars annually. Cell-based assays show that halogenated ethers (e.g., isoflurane) activate 5-HT3 receptors, which are found on gastrointestinal vagal afferents and in the hindbrain - key pathways for producing nausea and vomiting. This project evaluated the role of the vagus and activation of the hindbrain in isoflurane-induced emesis in musk shrews – a small animal model with a vomiting reflex, which is lacking in rats and mice. Sham-operated and abdominal vagotomized shrews were exposed to 1 to 3% isoflurane to determine effects on emesis; vagotomy was confirmed by lack of vagal transport of the neuronal tracer Fluoro-Gold. In an additional study, shrews were exposed to isoflurane and hindbrain c-Fos was measured at 90 min after exposure using immunohistochemistry. There were no statistically significant effects of vagotomy on isoflurane-induced emesis compared to sham-operated controls. Isoflurane exposure produced a significant increase in c-Fos-positive cells in the nucleus of the solitary tract and vestibular nuclei but not in the area postrema or dorsal motor nucleus. These results indicate that the abdominal vagus plays no role in isoflurane-induced emesis and suggest that isoflurane activates emesis by action on the hindbrain, as shown by c-Fos labeling. Ultimately, knowledge of the mechanisms of inhalational anesthesia-induced PONV could lead to more targeted therapies to control PONV.
Bacteriophages Phinally and Vivi2 were isolated from soil from Pittsburgh, Pennsylvania, USA, using host Gordonia terrae 3612. The Phinally and Vivi2 genomes are 59,265 bp and 59,337 bp, respectively, and share sequence similarity with each other and with GTE6. Fewer than 25% of the 87 to 89 putative genes have predictable functions.
Mycobacteriophages Cambiare, FlagStaff, and MOOREtheMARYer are newly isolated phages of Mycobacterium smegmatis mc2 155 recovered from soil samples in Pittsburgh, PA. All three genomes are closely related to cluster G mycobacteriophages but differ sufficiently in nucleotide sequence and gene content to warrant division of cluster G into several subclusters.
Attis and SoilAssassin are two closely related bacteriophages isolated on Gordonia terrae 3612 from separate soil samples in Pittsburgh, PA. The Attis and SoilAssassin genomes are 47,881 bp and 47,880 bp, respectively, and have 74 predicted protein-coding genes, including toxin-antitoxin systems, but no tRNAs.
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