Effect of sex on Toxocara canis larval migration to the cerebellum during experimental infection of Rattus norvegicus

The presence of Toxocara canis third instar larvae in the cerebellum of Rattus norvegicus may alter rodent behavior and movement. In this study, we investigated whether the sex of the rodent affects the migration of larvae to the cerebellum. Thirty-six Rattus norvegicus specimens (18 males and 18 females) were infected with 300 T. canis eggs and were euthanized after 60 days. The cerebellum was removed and treated with 0.5% HCl to recover the T. canis larvae. The number of larvae recovered from male rodents was significantly higher than in females, suggesting that the sex of the animal influences larval migration to the cerebellum

Corymbiform syphilis associated with three other sexually transmitted infections

Abstract: Secondary syphilis can have different clinical presentations, with corymbiform rash as its rarest manifestation. The disease is characterized by a central papule surrounded by smaller ones. We report the case of a man who has sex with man with corymbiform syphilis. The patient was subsequently diagnosed with HIV infection, hepatitis B, non-gonococcal urethritis, as well as infection of the central nervous system by treponema. This case not only illustrates a rare presentation of secondary syphilis, but also demonstrates the importance of further investigation of sexually transmitted infections, particularly among at-risk patients.