Abstract: This disclosure pertains to methods and compositions for tolerizing a mammal's brain to exogenously administered acid sphingomyelinase polypeptide by first delivering an effective amount of a transgene encoding the polypeptide to the mammal's hepatic tissue and then administering an effective amount of the transgene to the mammal's central nervous system (CNS).

Abstract: Neurological diseases, including lysosomal storage diseases, can be successfully treated using intraventricular delivery of the therapeutic agents to bypass the blood-brain barrier. Similarly, diagnostic agents and anesthetic agents can be delivered to the brain in this manner. The administration can be performed slowly to achieve maximum effect. Such administration permits greater penetration of distal portions of the brain.

Abstract: Neurological diseases, including lysosomal storage diseases, can be successfully treated using intraventricular delivery of the therapeutic agents to bypass the blood-brain barrier. Similarly, diagnostic agents and anesthetic agents can be delivered to the brain in this manner. The administration can be performed slowly to achieve maximum effect. Such administration permits greater penetration of distal portions of the brain.

Abstract: The disclosure pertains to methods and compositions for treating disorders affecting the central nervous system (CNS). These disorders include neurometabolic disorders such as lysosomal storage diseases that affect the central nervous system, e.g., Niemann-Pick A disease. They also include disorders such as Alzheimer's disease. The disclosed methods involve contacting an axonal ending of a neuron with a composition containing high titer AAV carrying a therapeutic transgene so that the AAV vector is axonally transported in a retrograde fashion and transgene product is expressed distally to the administration site.

Abstract: This disclosure pertains to methods and compositions for tolerizing a mammal's brain to exogenously administered acid sphingomyelinase polypeptide by first delivering an effective amount of a transgene encoding the polypeptide to the mammal's hepatic tissue and then administering an effective amount of the transgene to the mammal's central nervous system (CNS).

Abstract: Neurological diseases, including lysosomal storage diseases, can be successfully treated using intraventricular delivery of the therapeutic agents to bypass the blood-brain barrier. Similarly, diagnostic agents and anesthetic agents can be delivered to the brain in this manner. The administration can be performed slowly to achieve maximum effect. Such administration permits greater penetration of distal portions of the brain.

Abstract: The disclosure pertains to methods and compositions for treating disorders affecting the central nervous system (CNS). These disorders include neurometabolic disorders such as lysosomal storage diseases that affect the central nervous system, e.g., Niemann-Pick A disease. They also include disorders such as Alzheimer's disease. The disclosed methods involve contacting an axonal ending of a neuron with a composition containing high titer AAV carrying a therapeutic transgene so that the AAV vector is axonally transported in a retrograde fashion and transgene product is expressed distally to the administration site.