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相关概念视频

Insulin: Biosynthesis, Chemistry, and Preparation01:25

Insulin: Biosynthesis, Chemistry, and Preparation

374
The endoplasmic reticulum (ER) of pancreatic β-cells synthesizes preproinsulin, which consists of a signal peptide, A and B chains, and a C-peptide. Preproinsulin is then cleaved and folded into proinsulin, which translocates to the Golgi apparatus for sorting and packaging into secretory granules. In these granules, enzymatic clipping generates insulin and C-peptide.
Damage or functional impairment of β-cells inhibits insulin production, leading to diabetes. Diabetes treatment...
374
Insulin Formulations: Types and Delivery01:27

Insulin Formulations: Types and Delivery

193
Insulin preparations are categorized by their duration of action into short-acting and long-acting types. Two strategies are used to modify insulin's absorption and pharmacokinetic profile: slowing the absorption post-subcutaneous injection, or altering human insulin's amino acid sequence or protein structure. These changes retain the insulin's ability to bind to the insulin receptor, but alter its behavior in solution or after injection.
Short-acting insulins are divided into...
193
Data Validation01:15

Data Validation

162
Method validation is a crucial process in analytical chemistry designed to confirm that a given method consistently produces reliable and high-quality results. This process is essential when a method is applied to different sample matrices or when procedural modifications are made, ensuring that the results meet acceptable standards across various applications.
Key parameters for method validation include:
162
Insulin: Dosing Regimen and Adverse Effects01:16

Insulin: Dosing Regimen and Adverse Effects

169
Insulin-replacement therapy usually includes both long-acting insulin (basal) and short-acting insulin (to cater to postprandial needs). In a diverse group of type 1 diabetes patients, the average daily insulin dose is typically 0.5-0.7 units/kg body weight. However, obese patients and pubertal adolescents may need more due to insulin resistance.
The basal dose constitutes about 40%-50% of the total daily dose, with the rest as premeal insulin. The mealtime insulin dose should mirror...
169

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相关实验视频

Updated: Jun 29, 2025

Homogeneous Time-resolved Förster Resonance Energy Transfer-based Assay for Detection of Insulin Secretion
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Homogeneous Time-resolved Förster Resonance Energy Transfer-based Assay for Detection of Insulin Secretion

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少是多:验证一个单一的方法来进行全面的rh-胰岛素分析.

Sanjay Mendiratta1, Gurminder Bindra1, Sukhwinder Singh1

  • 1National Institute of Biologicals, Ministry of Health and Family welfare, Noida 201309, India.

Journal of pharmaceutical and biomedical analysis
|March 28, 2024
PubMed
概括
此摘要是机器生成的。

一种新的单反相高性能液态色谱 (RP-HPLC) 方法准确地分析人体胰岛素效能和相关蛋白质. 这种简化方法减少了质量控制的分析时间和成本.

关键词:
胰岛素是一种胰岛素.方法验证方法验证方法验证方法验证方法验证强度 强度 强度 强度质量控制 质量控制 质量控制相关的蛋白质 (杂质)

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Electrochemiluminescence Assays for Human Islet Autoantibodies
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科学领域:

  • 分析化学 分析化学
  • 药品分析 药品分析

背景情况:

  • 印度药典中人类胰岛素分析的当前方法涉及对强度和相关蛋白质的单独程序.
  • 这需要多次分析运行,增加质量控制的时间和资源支出.

研究的目的:

  • 开发和验证一种单一的统一方法,用于同时分析人体胰岛素效能和相关蛋白质.
  • 为胰岛素配方建立一个更有效,更具成本效益的质量控制过程.

主要方法:

  • 使用了C-18静止相的反相高性能液态染色学 (RP-HPLC).
  • 采用了55%缓冲剂 (0.2M硫酸,pH2.3) 和45%乙二的移动相,可在214nm处检测紫外线.
  • 验证了该方法的线性,准确性和检测极限.

主要成果:

  • 该方法在0.08-4.5 mg/mL (r2=0.999) 的度范围内显示出出色的线性.
  • 达到0.094mg/ml的检测极限,准确度在99%到102.8%之间.
  • 在单次色谱运行中成功量化了强度和相关蛋白质.

结论:

  • 一个单一的RP-HPLC方法提供了一个精确而有效的手段,可以同时分析人体胰岛素效能和相关蛋白质.
  • 这种统一的方法在制造和监管环境中为质量分析节省时间和成本方面提供了显著的优势.
  • 这种方法的实施可以提高用于公共卫生的标准化,高质量的胰岛素制剂的可用性.