Pharmacodynamics, Preliminary Pharmacokinetics and Tolerability After Multiple Oral Doses of 2.5 mg o.d. BIBB 515 BS (Capsule) or Pravastatin 20 mg Over 2 Weeks in Hyperlipemic Healthy Male Subjects (Parallel Group Comparison, Randomized, Placebo Controlled, Partly Double Blind [Pravastatin Open])

Investigation of pharmacodynamics (inhibition of oxidosqualene cyclase, MES as marker), effect on routine lipid profile parameters, safety and preliminary pharmacokinetics

Start Date01 Jul 1998

Sponsor / Collaborator

Boehringer Ingelheim GmbH

NCT02266498 / CompletedPhase 1

Single-dose Pharmacokinetics of 2.5 mg BIBB 515 BS and Effect of Food After Oral Administration of Capsules to Healthy Subjects (Randomized, 2-way-cross-over, Open Study)

To assess the effect of a breakfast (40 g fat) on single dose pharmacokinetics of a 2.5 mg BIBB 515 dose in capsules as well as the tolerability of BIBB 515 BS capsules

Start Date01 Jun 1998

Sponsor / Collaborator

Boehringer Ingelheim GmbH

100 Clinical Results associated with BIBB-515

100 Translational Medicine associated with BIBB-515

100 Patents (Medical) associated with BIBB-515

Literatures (Medical) associated with BIBB-515

01 Dec 2014·Experimental Hematology & OncologyQ3 · MEDICINE

Targeting cholesterol synthesis increases chemoimmuno-sensitivity in chronic lymphocytic leukemia cells

Q3 · MEDICINE

ArticleOA

Author: Chunfa Huang ; Monika Arya ; Virgilio Villeda ; Ravi Bobba ; Tyler Johnson ; Carl Freter ; Richard Sleightholm ; Indira Benakanakere

BACKGROUNDCholesterol plays an important role in cancer development, drug resistance and chemoimmuno-sensitivity. Statins, cholesterol lowering drugs, can induce apoptosis, but also negatively interfere with CD-20 and rituximab-mediated activity. Our goal is to identify the alternative targets that could reduce cholesterol levels but do not interfere with CD-20 in chemo immunotherapy of chronic lymphocytic leukemia (CLL).METHODSMEC-2 cells, a CLL cell line, and the peripheral blood mononuclear cells (PBMCs) from CLL patients were treated with cholesterol lowering agents, and analyzed the effect of these agents on cholesterol levels, CD-20 expression and distribution, and cell viability in the presence or absence of fludarabine, rituximab or their combinations.RESULTSWe found that MEC-2 cells treated with cholesterol lowering agents (BIBB-515, YM-53601 or TAK-475) reduced 20% of total cellular cholesterol levels, but also significantly promoted CD-20 surface expression. Furthermore, treatment of cells with fludarabine, rituximab or their combinations in the presence of BIBB-515, YM-53601 or TAK-475 enhanced MEC-2 cell chemoimmuno-sensitivity measured by cell viability. More importantly, these cholesterol lowering agents also significantly enhanced chemoimmuno-sensitivity of the PBMCs from CLL patients.CONCLUSIONOur data demonstrate that BIBB-515, YM53601 and TAK-475 render chemoimmuno-therapy resistant MEC-2 cells sensitive to chemoimmuno-therapy and enhance CLL cell chemoimmuno-sensitivity without CD-20 epitope presentation or its downstream signaling. These results provide a novel strategy which could be applied to CLL treatment.

01 Mar 1997·Journal of Lipid ResearchQ2 · BIOLOGY

Effects of a novel 2,3-oxidosqualene cyclase inhibitor on cholesterol biosynthesis and lipid metabolism in vivo

Q2 · BIOLOGY

Article

Author: M Mark ; R Maier ; P Müller ; B Eisele ; R Budzinski

BIBB 515 (1-(4-chlorobenzoyl)-4-((4-(2-oxazolin-2-yl) benzylidene))piperidine) is a potent and selective inhibitor of 2,3-oxidosqualene cyclase (OSC) [EC 5.4.99.7]. In rats and mice BIBB 515 inhibited OSC in vivo in a dose-dependent manner after 1, 3, and 5 h with ED50 values from 0.2 to 0.5 mg/kg (1 to 5 h) in rats and 0.36 (1 h) to 15.5 (3 h) and 33.3 (5 h) mg/kg in mice. Inhibition of [14C]acetate incorporation into sterols was found to parallel the effects on OSC when measured after 1 h (mice) or 3 h (rats). ED50 calculated were 0.9 mg/kg (mice) and 0.1 mg/kg (rats). Dose-dependent lipid-lowering activity was seen in normolipemic hamsters after 11 days treatment (-19% for total cholesterol and -32% for VLDL + LDL cholesterol at 55 mg/kg BIBB 515 per day) and in hyperlipemic hamsters after 25 days (-25% for total cholesterol and -59% for LDL-cholesterol at 148 mg/kg BIBB 515 per day). Calculation of kinetic parameters revealed no relevant differences between control and treatment groups in LDL clearance or fractional catabolic rates, but significant reductions of LDL production rates (-30% to -54%). Liver LDL receptor mRNA of the treated animals was not or only slightly increased. Liver VLDL secretion as measured by the Triton WR1339 method was reduced after BIBB 515 in rats and hamsters. It is concluded that the lipid-lowering effect of BIBB 515 is mainly the result of an inhibition of LDL production rather than due to an increase in LDL catabolism. OSC inhibitors may offer a novel approach for lipid-lowering therapy.

100 Deals associated with BIBB-515

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