Peripheral nerve excitability abnormalities in Neuronal Intranuclear Inclusion Disease: Assessment with histopathological analysis.

Objective: Neuronal Intranuclear Inclusion Disease (NIID) is a neurodegenerative disease affecting the central and peripheral nerves. We aimed to assess the pathophysiological features of peripheral nerve dysfunction in NIID.

Methods: We observed six unrelated NIID patients through clinical records, nerve conduction studies, and multiple measures of motor nerve excitability.

Intermediate phenotype between CMT2Z and DIGFAN associated with a novel MORC2 variant: a case report.

Charcot-Marie-Tooth disease type 2Z is caused by MORC2 mutations and presents with axonal neuropathy. MORC2 mutations can also manifest as developmental delay, impaired growth, dysmorphic facies, and axonal neuropathy (DIGFAN). We report a patient exhibiting an intermediate phenotype between these diseases associated with a novel MORC2 variant.

A novel COL4A1 variant associated with recurrent epistaxis and glioblastoma.

COL4A1-related disorders are characterized by a higher incidence of cerebral hemorrhage than other hereditary cerebral small vessel diseases. Accumulating data have shown broad phenotypic variations, and extracerebral hemorrhages have been linked to these disorders. Moreover, the coexistence of neural tumors has been described.

Memory B cell resurgence requires repeated rituximab in myasthenia gravis.

The immunologic effects of rituximab (RTX) in myasthenia gravis (MG) remain to be explored. We aimed to clarify immunologic reactions and their association with response to RTX in MG. Regulatory T cell and B cell profiles of MG patients were monitored.

Ultrastructure and motility of the spermatozoa of Polypedates leucomystax (Amphibia, Anura, Rhacophoridae).

Sperm morphology is thought to be shaped by evolutionary pressure from the fertilization environment. Rhacophoridae (Amphibia, Anura) include both foam-nesting and nonfoam-nesting species and exhibit a variety of sperm morphologies. Here, we examine the sperm morphology and motility of a foam-nesting Rhacophoridae frog, Polypedates leucomystax.

Quantitative determination of colored oily soil adhering to metal surface using digital image data.

A method for calculating the amount of colored soil on a flat metal surface from digital image data was examined. Round samples cut out of SUS tape were soiled with oily soil mixed with sudan III, placed in sample bottles, and washed using a tube rotator. Images of the samples before and after the washing process were captured using a CCD camera and the image data were processed by a computer.

Ultrastructural analysis of spermiogenesis in Rhacophorus arboreus (Amphibia, Anura, Rhacophoridae).

The spermatozoa of the Japanese green tree frog, Rhacophorus arboreus (Amphibia, Anura, Rhacophoridae), have a characteristic corkscrew-shaped head and a thick tail that extends perpendicular to the longitudinal axis of the head. We examined the process of spermatogenesis in Rh. arboreus, particularly spermiogenesis, using light and transmission electron microscopy.

A novel mechanism of sperm motility in a viscous environment: corkscrew-shaped spermatozoa cruise by spinning.

Fertilization of the green tree frog, Rhacophorus arboreus, occurs in the viscous environment of a foam nest, which is laid on vegetation. Their spermatozoa have a characteristic corkscrew-shaped head and a thick tail that extends perpendicularly to its longitudinal axis. However, it is unclear how these corkscrew-shaped spermatozoa move in this highly viscous environment.