Neuroactive Steroid Compositions for GABA-A Modulation in CNS Disorders
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Solution Overview
Problem
Current treatments for conditions such as essential tremor, postpartum depression, and anxiety disorders are inadequate, particularly in addressing cerebellar dysfunction and hormonal imbalances associated with low progesterone levels.
Innovation Solution
Administration of neuroactive steroids like pregnanolone, allopregnanolone, alphadalone, or ganaxolone, optionally with cyclodextrin, to regulate brain excitability and treat CNS disorders through intravenous delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional treatments are used for essential tremor, postpartum depression, and anxiety disorders, then treatment options are available, but the treatments are inadequate and do not effectively address cerebellar dysfunction and hormonal imbalances
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure and pharmacological properties of steroid compounds. Specifically, it uses neuroactive steroids with modified molecular structures that enable them to bind to GABA-A receptors and modulate chloride ion conductance, thereby changing the physiological parameters of brain excitability to treat multiple CNS disorders effectively
Solution Approach 2:
The patent demonstrates multi-functionality by showing that neuroactive steroids can treat multiple different conditions (essential tremor, postpartum depression, anxiety disorders) through a common mechanism of action at GABA-A receptors. This universal approach allows a single class of compounds to address diverse neurological and psychiatric conditions with different underlying pathologies
2Productivity
If neuroactive steroids are administered to treat CNS disorders, then rapid onset and sustained efficacy are achieved, but sedation and adverse effects may occur
Solution Approach 1:
The patent applies local quality by achieving rapid and sustained therapeutic effects specifically at the GABA-A receptor binding site in the brain, while minimizing systemic adverse effects. The neuroactive steroids provide localized modulation of chloride ion conductance at the receptor level, producing rapid efficacy without widespread sedation or harmful effects throughout the body
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides effective treatment for tremor and anxiety disorders with rapid onset and sustained efficacy, minimizing sedation and adverse effects.
Implementation Method 1
GABA regulates the excitability of individual neurons by regulating the conductance of chloride ions across the neuronal membrane
Implementation Method 2
GABA interacts with its recognition site on the GRC to facilitate the flow of chloride ions down an electrochemical gradient of the GRC into the cell
Implementation Method 3
The disclosure also features compositions comprising a neuroactive steroid; and optionally a cyclodextrin
Data Source
AI summary
Described herein are methods of treating tremor, e.g., essential tremor; depression, e.g., postpostum depression; and anxiety disorder, the method comprising administering to a human subject suffering from tremor, e.g., essential tremor; depression, e.g., postpostum depression, an anxiety disorder with a neuroactive steroid or a composition comprising a neuroactive steroid (e.g., pregnanolone, allopregnanolone, alphadalone, ganaxolone, or alphaxolone).