Overview
Sheep Thyroid-Stimulating Hormone (TSH) is a pituitary-derived glycoprotein that specifically regulates thyroid gland function in ovine species. Structurally similar to human TSH but with distinct species-specific activity, it consists of alpha and beta subunits that bind to thyroid receptors. The hormone plays critical roles in metabolic regulation and is harvested from sheep pituitary glands or produced recombinantly for scientific and commercial use. In B2B contexts, sheep TSH is primarily supplied to veterinary pharmaceutical manufacturers, research institutions, and diagnostic kit producers. Its applications leverage the hormone's ability to stimulate thyroxine production, making it valuable for both therapeutic and experimental purposes. Commercial preparations typically come lyophilized to maintain stability during storage and transport.
Physical and Chemical Properties
As a glycoprotein, sheep TSH exhibits typical properties of biological macromolecules. The lyophilized powder form ensures long-term stability when stored at recommended temperatures, with reconstitution in sterile buffers required before use. Its molecular weight ranges between 28-30 kDa depending on glycosylation patterns, which also influence biological activity. The hormone is sensitive to extreme pH, heat, and proteolytic enzymes, requiring careful handling. Unlike small-molecule compounds, it lacks defined melting/boiling points due to protein denaturation. Activity is measured in international units (IU) via bioassays comparing potency to WHO reference standards. Purity is typically verified through HPLC or electrophoresis, with commercial preparations often exceeding 95% purity.
Main Applications
In veterinary medicine, sheep TSH is used diagnostically to assess thyroid function and therapeutically for hormone replacement therapies. Its species specificity makes it particularly valuable for ovine health management, especially in breeding programs where thyroid status affects reproductive outcomes. Biomedical researchers utilize sheep TSH as a model for studying thyroid axis regulation and developing cross-species comparative endocrinology data. Diagnostic manufacturers incorporate it into ELISA kits and radioimmunoassays for veterinary testing. Emerging applications include biotechnology for producing recombinant variants with enhanced stability or modified activity profiles for specialized uses.
Safety and Storage
As a biological substance, sheep TSH requires careful handling to maintain integrity and prevent contamination. Personnel should wear gloves and protective eyewear when handling the lyophilized powder or solutions. Avoid freeze-thaw cycles of reconstituted products, which can cause protein aggregation and activity loss. Long-term storage at -20°C in sealed, desiccated containers is essential. Transport must comply with cold chain protocols using dry ice or validated cooling packs. Dispose of unused material according to local biomedical waste regulations. Material Safety Data Sheets (MSDS) provided by manufacturers specify detailed handling procedures and first-aid measures for accidental exposure.
B2B Procurement Guide
Professional buyers should prioritize suppliers that provide certificates of analysis detailing potency (IU/mg), purity (via HPLC), and endotoxin levels. Reputable manufacturers typically offer batch-specific activity data and stability profiles. Consider whether natural pituitary-derived or recombinant TSH better suits your application, as production methods affect price and performance characteristics. Minimum order quantities often apply due to production scale, with bulk discounts available for research-grade material. Validate cold chain logistics capabilities before purchase, especially for international shipments. Some suppliers offer custom conjugation services (e.g., biotinylation) for diagnostic applications. Always request samples for quality verification when establishing new supplier relationships.
Related Manufacturers
- 主营：Elisa试剂盒
- 主营：原代细胞、ELISA试剂盒、ELISA检测试剂盒、重组蛋白、天然蛋白、活性蛋白、基础培养基、完全培养基、抗体、标记抗体、人检测试剂盒、大鼠检测试剂盒、标记细胞、永生化细胞