Retraction Note: Roflumilast and tadalafil improve learning and memory deficits in intracerebroventricular Aβ1-42 rat model of Alzheimer's disease through modulations of hippocampal cAMP/cGMP/BDNF signaling pathway
1 Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard (Hamdard University), New Delhi, 110062, India.
2 Department of Medical Elementology and Toxicology, School of Chemical and Life Sciences, Jamia Hamdard (Hamdard University), New Delhi, 110062, India.
3 Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard (Hamdard University), New Delhi, 110062, India.
4 Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard (Hamdard University), New Delhi, 110062, India. makhtar_ph@jamiahamdard.ac.in.