Awake craniotomy removal of a corticospinal tract developmental venous anomaly hemorrhage: A case report.

Developmental venous anomalies (DVAs) are composed of mature venous vessels that lack malformed or neoplastic elements. Although the hemorrhage risk is considered negligible, some patients may have neurological symptoms attributable to acute infarction or intracranial hemorrhage secondary to thrombosis, in the absence of a coexisting cavernous malformation. We report the case of a 42-year-old patient who presented with acute left-hand paresis secondary to a subcortical hemorrhage.

Use of Saito technique to resect an anterior lumbar spine meningioma: Technical note.

Background: Complete (Simpson Grade I: total removal) resections for anterior spinal meningiomas are especially challenging. This is largely attributed to difficulty obtaining a water-tight dural repair where the tumor has infiltrated the dura requiring duroplasty, thus often resulting in just a Simpson Grade II resection (i.e.

Do persistent RNA viruses fit the trade-off hypothesis of virulence evolution?

The evolution of virulence has been studied from a number of theoretical perspectives, and a few experimental systems. Although there is no consensus on an overarching framework that covers all situations, the 'trade-off' hypothesis is a useful framework for examining the nature of symbiotic relationships between viruses and their hosts. Here we use this framework to look at persistent RNA viruses of unicellular eukaryotes and fungi that are themselves parasites of more complex eukaryotes.

Apparent involvement of a beta1 type integrin in coral fertilization.

Integrins are involved in a wide variety of cell adhesion processes, and have roles in gamete binding and fusion in mammals. Integrins have been also discovered in the scleractinian coral Acropora millepora (Cnidaria: Anthozoa). As a first step toward understanding the molecular basis of fertilization in corals, we examined the effect of polyclonal antisera raised against recombinant coral integrins on gamete interactions in A.

A virus in a fungus in a plant: three-way symbiosis required for thermal tolerance.

A mutualistic association between a fungal endophyte and a tropical panic grass allows both organisms to grow at high soil temperatures. We characterized a virus from this fungus that is involved in the mutualistic interaction. Fungal isolates cured of the virus are unable to confer heat tolerance, but heat tolerance is restored after the virus is reintroduced.

Pseudogenes contribute to the extreme diversity of nuclear ribosomal DNA in the hard coral Acropora.

One characteristic of Indo-Pacific Acropora spp. is extremely high diversity in rDNA sequences at both the species and individual levels. In order to test the hypothesis that pseudogenes may contribute to this diversity, three kinds of analyses were conducted.