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Bovine insulin and porcine insulin may be considered as the first clinically used insulin analogs (naturally occurring, produced by extraction from animal pancreas), at the time when biosynthetic human insulin (insulin human rDNA) was not available.
A special FDA importation process is required to obtain bovine or porcine derived insulin for use in the US, [34] although there may be some remaining stocks of porcine insulin made by Lilly in 2005 or earlier, and porcine lente insulin is also sold and marketed under the brand name Vetsulin(SM) in the US for veterinary usage in the treatment ...
Lente insulin is a combination of porcine and bovine insulin products which are filtered and combined with zinc to form the suspension. Even product that is filtered very well is still of animal origin, and there is a chance the body may recognize the foreign protein as such and form antibodies against it.
Bovine insulin differs from human in only three amino acid residues, and porcine insulin in one. Even insulin from some species of fish is similar enough to human to be clinically effective in humans. Insulin in some invertebrates is quite similar in sequence to human insulin, and has similar physiological effects.
Lente insulin is a combination of porcine and bovine insulin products which are filtered and combined with zinc to form the suspension. Even product that is filtered very well is still of animal origin, and there is a chance the body may recognize the foreign protein as such and form antibodies against it.
When insulin was originally purified from bovine or porcine pancreata, all the proinsulin was not fully removed. [ 14 ] [ 15 ] When some people used these insulins, the proinsulin may have caused the body to react with a rash, to resist the insulin, or even to make dents or lumps in the skin at the place where the insulin was injected.
human insulin (BHI): Humulin from Lilly and Novolin from Novo Nordisk among others largely replaced bovine and porcine insulin for human therapy. Some prefer to continue using the animal-sourced preparations, as there is some evidence that synthetic insulin varieties are more likely to induce hypoglycemia unawareness. Remaining manufacturers of ...
The general form of this treatment is an intermediate-acting basal insulin with a regimen of food and insulin every 12 hours, with the insulin injection following the meal. [52] [67] [68] The most commonly used intermediate-acting insulins are NPH, also referred to as isophane, [69] [70] or Caninsulin, also known as Vetsulin, a porcine Lente ...