Microemulsion technology in the reformulation of cyclosporine: the reason behind the pharmacokinetic properties of Neoral.

Abstract:

:Management of transplant patients receiving cyclosporine therapy is complicated by interpatient and intrapatient variability in pharmacokinetic parameters caused by the drug's unpredictable bioavailability. Cyclosporine, a highly lipophilic cyclic polypeptide, has recently been reformulated using a microemulsion delivery system to improve its bioavailability. This new orally administered formulation, Neoral (cyclosporine capsules and oral solution for microemulsion), has self-emulsifying properties and spontaneously forms a microemulsion (particle size < 0.15 microns) in the aqueous fluids of the gastrointestinal tract. Clinical trials in renal transplant recipients, liver transplant recipients with external biliary diversion, and healthy volunteers have demonstrated enhanced bioavailability and greatly improved dose linearity with the cyclosporine microemulsion compared with the original cyclosporine formulation, Sandimmune (cyclosporine). The rate and extent of absorption were greater with the cyclosporine microemulsion under both fasting and nonfasting conditions, and there was a more consistent relationship between the administered dose and area under the time-concentration curve. Early clinical efficacy trials in renal and liver transplant recipients have shown no difference in the incidence or severity of drug-related adverse events. Studies on the long-term efficacy and safety of the new microemulsion formulation are ongoing.

journal_name

Clin Transplant

journal_title

Clinical transplantation

authors

Ritschel WA

subject

Has Abstract

pub_date

1996-08-01 00:00:00

pages

364-73

issue

4

eissn

0902-0063

issn

1399-0012

journal_volume

10

pub_type

杂志文章,评审
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    doi:

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    doi:

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    doi:

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    pub_type: 杂志文章

    doi:10.1111/ctr.13513

    authors: Subramanian AK,Theodoropoulos NM,Infectious Diseases Community of Practice of the American Society of Transplantation.

    更新日期:2019-09-01 00:00:00

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    更新日期:2011-09-01 00:00:00

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    doi:10.1111/ctr.12780

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    更新日期:2009-12-01 00:00:00

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    pub_type: 杂志文章

    doi:

    authors: Bilbao I,Charco R,Balsells J,Lazaro JL,Hidalgo E,Llopart L,Murio E,Margarit C

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    doi:10.1111/j.1399-0012.2005.00357.x

    authors: Cauduro RL,Costa C,Lhulier F,Garcia RG,Cabral RD,Gonçalves LF,Manfro RC

    更新日期:2005-08-01 00:00:00

  • The association of acute rejection vs recurrent glomerular disease with graft outcomes after kidney transplantation.

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    pub_type: 杂志文章

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    authors: Singh T,Astor BC,Zhong W,Mandelbrot DA,Maursetter L,Panzer SE

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    pub_type: 临床试验,杂志文章,随机对照试验

    doi:

    authors: Cantarovich M,Besner JG,Fitchett DH,Latter DA

    更新日期:1997-10-01 00:00:00