Single Lyophilization Process for Somatostatin Sustained Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current processes for preparing sustained release pharmaceutical compositions of somatostatin analogues are complex and often fail to produce consistent products, particularly in maintaining a narrow pH range, which affects the solubility and injectability of the peptides.
Innovation Solution
A simpler process involving a single lyophilization step is employed, combining a gellable somatostatin analogue salt with an aqueous acid solution, followed by lyophilization and hydration, to achieve a final pH range of 5 to 7, ensuring consistent pH and improved injectability and release profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple lyophilization steps are used to prepare sustained release compositions, then the pH consistency and product uniformity improve, but the process complexity and manufacturing time increase
Solution Approach 1:
The patent extracts and removes one of the two lyophilization steps from the conventional process, retaining only a single lyophilization step that is sufficient to achieve the desired pH consistency and product uniformity. This simplification reduces process complexity while maintaining manufacturing precision.
Solution Approach 2:
The patent modifies process parameters (such as lyophilization conditions, excipient ratios, and pH adjustment parameters) to achieve consistent pH (5-7) and uniform product formation with a single lyophilization step, eliminating the need for multiple steps while maintaining manufacturing precision.
2Device complexity
If a single lyophilization step is used to simplify the process, then the manufacturing time and process complexity reduce, but the pH consistency and product uniformity may deteriorate
Solution Approach 1:
The patent optimizes process parameters including excipient concentrations, lyophilization conditions, and pH adjustment levels to achieve consistent pH (5-7) and uniform product formation with a single lyophilization step, thereby maintaining manufacturing precision while reducing process complexity.
Solution Approach 2:
The patent introduces specific excipients and pH adjustment agents as intermediaries that facilitate uniform product formation and pH control during the single lyophilization step, ensuring that pH consistency is maintained even with the simplified process.
3Ease of operation
If the pH range is widened to improve injectability, then the ease of administration improves, but the solubility and sustained release characteristics deteriorate
Solution Approach 1:
The patent optimizes the pH parameter to a specific range (5-7) that balances injectability and solubility. This parameter optimization ensures that the composition is both easy to administer and maintains proper solubility characteristics for sustained release.
Solution Approach 2:
The patent ensures uniform pH distribution throughout the composition (local quality) to maintain consistent solubility and injectability characteristics, preventing localized variations that could compromise either parameter.
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
This process results in pharmaceutical compositions with consistent pH, improved injectability, and extended release of somatostatin analogues over several weeks, facilitating easier administration and controlled drug release.
Implementation Method 1
combining a gellable somatostatin analogue salt and an aqueous acid solution
Implementation Method 2
lyophilizing the resulting mixture only once
Data Source
AI summary
A process for the preparation of injectable pharmaceutical compositions for the sustained release of somatostatin analogs and compositions prepared according to the process. The process may comprise lyophilizing a mixture of lanreotide acetate and acetic acid to form a lyophilizate and hydrating the lyophilizate, wherein the lyophilization is performed only once.