(12) Patent Application Publication (10) Pub. No.: US 2012/0277199 A1 Ye Et Al
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WO 2017/048702 Al
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date W O 2017/048702 A l 2 3 March 2017 (23.03.2017) P O P C T (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every C07D 487/04 (2006.01) A61P 35/00 (2006.01) kind of national protection available): AE, AG, AL, AM, A61K 31/519 (2006.01) AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, (21) International Application Number: DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, PCT/US20 16/05 1490 HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, (22) International Filing Date: KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, 13 September 2016 (13.09.201 6) MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, (25) Filing Language: English SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, (26) Publication Language: English TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (30) Priority Data: 62/218,493 14 September 2015 (14.09.2015) US (84) Designated States (unless otherwise indicated, for every 62/218,486 14 September 2015 (14.09.2015) US kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, (71) Applicant: INFINITY PHARMACEUTICALS, INC. -
Neuroprotection in Alzheimer's Disease
Chapter 8 Neuroprotection in Alzheimer’s Disease Introduction Alzheimer’s disease (AD) is a progressive degenerative disorder of the brain that begins with memory impairment and eventually progresses to dementia, physical impairment, and death. Patients develop various psychiatric and neurological signs during the course of the disease. The prevalence rates of dementia vary significantly in different countries, but range from 2.1 to 10.5%. AD is the most common type of dementia, accounting for 50–60% of all cases, and is described in detail in a special report on AD (Jain 2010). Several other types of dementias are considered in the differential diagnosis of AD and sometimes all the dementias are lumped together if the type is not known. Other well-known types of dementias are vascular dementia, dementia of aging, and dementia associated with HIV infection. The focus of this section is on AD and some other dementias will be described in Chap. 11. Pathomechanism of Alzheimer’s Disease Several factors that play a role in the etiology and pathogenesis of AD include the following: • Aging • Genetic risk factors • Amyloid precursor protein (APP) and beta-amyloid (Ab) accumulation with neural and vascular sequelae • Tau hyperphosphorylation • Membrane disturbances, phospholipid metabolism, and disruption of signal transduction • Inflammatory reactions and immunological disturbances • Environmental toxins: trace metals • Neurotransmitter defects and imbalances K.K. Jain, The Handbook of Neuroprotection, DOI 10.1007/978-1-61779-049-2_8, 337 © Springer Science+Business Media, LLC 2011 338 8 Neuroprotection in Alzheimer’s Disease • Neuroendocrine disturbances • Oxidative injury and free radicals • Disturbances in regulation and receptors of neurotrophic factors (NTFs) Such a large number of factors in the etiology of AD are responsible for the plethora of theories of cause of AD. -
Natural Products As Alternative Choices for P-Glycoprotein (P-Gp) Inhibition
Review Natural Products as Alternative Choices for P-Glycoprotein (P-gp) Inhibition Saikat Dewanjee 1,*, Tarun K. Dua 1, Niloy Bhattacharjee 1, Anup Das 2, Moumita Gangopadhyay 3, Ritu Khanra 1, Swarnalata Joardar 1, Muhammad Riaz 4, Vincenzo De Feo 5,* and Muhammad Zia-Ul-Haq 6,* 1 Advanced Pharmacognosy Research Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Raja S C Mullick Road, Kolkata 700032, India; [email protected] (T.K.D.); [email protected] (N.B.); [email protected] (R.K.); [email protected] (S.J.) 2 Department of Pharmaceutical Technology, ADAMAS University, Barasat, Kolkata 700126, India; [email protected] 3 Department of Bioechnology, ADAMAS University, Barasat, Kolkata 700126, India; [email protected] 4 Department of Pharmacy, Shaheed Benazir Bhutto University, Sheringal 18050, Pakistan; [email protected] 5 Department of Pharmacy, Salerno University, Fisciano 84084, Salerno, Italy 6 Environment Science Department, Lahore College for Women University, Jail Road, Lahore 54600, Pakistan * Correspondence: [email protected] (S.D.); [email protected] (V.D.F.); [email protected] (M.Z.-U.-H.) Academic Editor: Maria Emília de Sousa Received: 11 April 2017; Accepted: 15 May 2017; Published: 25 May 2017 Abstract: Multidrug resistance (MDR) is regarded as one of the bottlenecks of successful clinical treatment for numerous chemotherapeutic agents. Multiple key regulators are alleged to be responsible for MDR and making the treatment regimens ineffective. In this review, we discuss MDR in relation to P-glycoprotein (P-gp) and its down-regulation by natural bioactive molecules. P-gp, a unique ATP-dependent membrane transport protein, is one of those key regulators which are present in the lining of the colon, endothelial cells of the blood brain barrier (BBB), bile duct, adrenal gland, kidney tubules, small intestine, pancreatic ducts and in many other tissues like heart, lungs, spleen, skeletal muscles, etc. -
MINI-REVIEW Cancer Multidrug Resistance (MDR): a Major
Cancer Multidrug Resistance: A Major Impediment to Effective Chemotherapy MINI-REVIEW Cancer Multidrug Resistance (MDR): A Major Impediment to Effective Chemotherapy Mohd Fahad Ullah Abstract Multidrug resistance (MDR) continues to be a major challenge to effective chemotherapeutic interventions against cancer. Various types of cancers have been observed to exhibit this phenomenon, a strategy that involves cellular and non cellular mechanisms employed by cancer cells to survive the cytotoxic actions of various structurally and functionally unrelated drugs. The present article is a brief review of the fundamental mechanisms underlying the phenomenon of MDR in cancer cells and some novel approaches addressed at its inhibition, circumvention or reversal. The emergence of natural products as potential anti-MDR molecules is of particular significance. Since many of these are essential components of the human diet, they are expected to possess fewer side effects and may possibly represent a new generation of MDR modulators. Key Words: Multidrug resistance - chemotherapy - mechanisms - natural modulators Asian Pacific J Cancer Prev, 9, 1-6 Introduction specificity in terms of origin, vasculature and tissue function. Tumors located in parts of the body where the The resistance of human tumor to multiple drug is not accessible or tumors with compromised chemotherapeutic drugs has been recognized as a major vasculature often show resistance to chemotherapy. The reason for the failure of cancer therapy (Gottesman and former specificity is linked -