Abstract:
:The majority of pharmaceutical formulations for the treatment of ocular pathologies are for topical administration. However, this kind of ophthalmic formulations has disadvantages such as low bioavailability and, consequently, a reduced therapeutic effect. This happens due to the anatomical and physiological specificity of the eyeball (tissues with different characteristics, the presence of different defense mechanisms, etc.) effects, reducing the residence time of formulation in contact with the ocular surface and consequently fall dramatically the penetration ability of the formulation through the ocular tissues. The repeated administration of this type of ophthalmic formulations with the aim to produce the desired therapeutic effect leads to the appearance of side effects due to its systemic absorption. In order to overcome the weaknesses of this type of therapy is necessary to use different strategies. In this review article, we discuss some of these different strategies, with particular emphasis on the application of colloidal dispersions in ophthalmic formulations, particularly, the use of polymeric and lipid nanoparticles. In fact, the results of the published scientific research has demonstrated that the use of this type of strategy not only promotes the increase in the precorneal residence time of the ophthalmic formulation, but also the ability to penetrate through the ocular tissues, enhancing the drug bioavailability and the therapeutic efficacy of ophthalmic formulations. Finally, it is also given emphasis not only to the current state of the scientific research in this area, but also to the existing patents and the followed procedure to place on the market an ophthalmic formulation based on nanoparticles.
journal_name
Curr Pharm Desjournal_title
Current pharmaceutical designauthors
Almeida H,Amaral MH,Lobao P,Frigerio C,Sousa Lobo JMdoi
10.2174/1381612821666150923095155subject
Has Abstractpub_date
2015-01-01 00:00:00pages
5212-24issue
36eissn
1381-6128issn
1873-4286pii
CPD-EPUB-70585journal_volume
21pub_type
杂志文章,评审abstract::Persistent hyperinsulinemic hypoglycemia (PHH) is caused by solitary benign insulinoma or hyperplasia of pancreatic beta cells. In infants, PHH is caused by functionally defective hyperplastic beta cells, which are either diffusely or focally distributed in the pancreas. In adults, insulinoma is the most common cause ...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/138161210791164090
更新日期:2010-05-01 00:00:00
abstract::Neuropathic pain is characterized by complicated combination of positive (e.g., hyperalgesia and allodynia) and negative (e.g., hypoesthesia and hypoalgesia) symptoms, and is often refractory to conventional pharmacological agents, including morphine. Although the molecular mechanisms for positive symptoms are extensi...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612820666141027113923
更新日期:2015-01-01 00:00:00
abstract::ATP-binding cassette (ABC) transporters are a huge family of ATP-dependent transmembrane proteins whose main function is exporting or importing substances or molecules through the cell membranes, plasma cell membrane, or inner membranes in organelles. They fulfill these functions by maintaining cell integrity, metabol...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612822666160810120359
更新日期:2016-01-01 00:00:00
abstract::Single-agent therapy with molecularly targeted agents has shown limited success in tumor growth control, mainly because escape or resistance mechanisms are activated once a signalling molecule is inhibited. Rational combinations of target-specific agents could counteract this response providing a useful strategy in ca...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:
更新日期:2013-01-01 00:00:00
abstract::The integrin family of cell surface receptors were principally thought to be involved in cell adhesion. Intense study has shown that these glycoproteins also regulate a diverse range of physiological processes. Inappropriate activation of integrins has been implicated in many pathological processes. Recent studies hav...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/138161208783413284
更新日期:2008-01-01 00:00:00
abstract::Natural products remain the best resources of drugs and drug leads. Recently, there is growing recognition that identifying new small molecules to promote bone regeneration is a laudable translational goal. In fact, new approaches for bone repair and regeneration that involve inexpensive naturally-derived compounds wo...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612823666170516145800
更新日期:2017-01-01 00:00:00
abstract::Alzheimer disease (AD) is the leading cause of dementia among elderly. Currently, no effective treatment is available for AD. Analysis of transgenic mouse models of AD has facilitated our understanding of disease mechanisms and provided valuable tools for evaluating potential therapeutic strategies. In this review, we...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/138161212799315786
更新日期:2012-01-01 00:00:00
abstract::Multiple Sclerosis (MS) is the most common autoimmune demyelinating disorder in Western countries and can lead to permanent disability. Over the past decades remarkable progress has been made in providing new therapeutic strategies to tackle the burden of the disease. Oral drugs and monoclonal antibodies are the main ...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/138161211798157630
更新日期:2011-01-01 00:00:00
abstract::While pharmacological blockade of dopamine D2 receptor can effectively suppress the psychotic or positive symptoms of schizophrenia, there is no satisfactory medication for the negative and cognitive symptoms of schizophrenia in spite of the proliferation of second generation antipsychotic drugs. Excitements over a ne...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612821666150724100952
更新日期:2015-01-01 00:00:00
abstract::Pancreatic cancer is one of the most fatal human malignancies. Though a relatively rare malignancy, it remains one of the deadliest tumors, with an extremely high mortality rate. The prognosis of patients with pancreatic cancer remains poor; only patients with small tumors and complete resection have a chance of a com...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/13816128112092395
更新日期:2012-01-01 00:00:00
abstract::Population studies have identified diabetes mellitus as a risk factor for cardiac and vascular events, with a common association with hypertension. Observational studies have consistently demonstrated blood glucose as a continuous cardiovascular risk factor. Experimental studies suggest that elevated blood glucose, th...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/138161206776843322
更新日期:2006-01-01 00:00:00
abstract::DNA methylation, a major regulator of epigenetic modifications has been shown to alter the expression of genes that are involved in aspects of glucose metabolism such as glucose intolerance, insulin resistance, β-cell dysfunction and other conditions, and it ultimately leads to the pathogenesis of type 2 diabetes mell...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612822666160527111152
更新日期:2016-01-01 00:00:00
abstract::Hereditary hemorrhagic telangiectasia (HHT) is characterized by vessel alterations such as dilatation of postcapillary venules and arterio-venous communications, which account for the major clinical manifestations of the disease. Two types of HHT have been characterized HHT-1 and HHT-2, respectively, depending the for...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/138161206776361228
更新日期:2006-01-01 00:00:00
abstract::Carbonic anhydrases (CAs, EC 4.2.1.1) are metalloenzymes which catalyze CO(2) hydration to bicarbonate and protons. Five genetically distinct classes are known, which represent an excellent example of convergent evolution. Inhibition of α-CAs from vertebrates, including humans, with sulfonamides was exploited clinical...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/138161210793429797
更新日期:2010-01-01 00:00:00
abstract:BACKGROUND:Cyclodextrins (CDs), as one type of the novel pharmaceutical excipients, have been widely used in drug delivery and pharmaceutical industry. Over the past decades, a large amount of molecular modeling studies in CDs were reported for profound understanding of structural, dynamic and energetic features of CDs...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612822666161208142617
更新日期:2017-01-01 00:00:00
abstract::Cancer disease is one of the leading causes of morbidity and mortality worldwide, with approximately 14 million new cases and around 8 million cancer-related deaths yearly. Estimates expect to increase these figures over the next few years. Therefore, it is very important to develop more effective and targeted therapi...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612821666150820100812
更新日期:2015-01-01 00:00:00
abstract::An integrative synthesis of concepts and an explosion of experimental and epidemiological findings allow new insights as to how the interactions of genetic, environmental, dietary, cultural (social, psychological, economic) factors can influence the aging and diseases of aging processes. Although the net effect of the...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/138161208786264106
更新日期:2008-01-01 00:00:00
abstract::The tumor cell growth inhibitory activities (log 1/GI(50)) of 166 anticancer agents studied at the National Cancer Institute (NCI) in vitro anticancer screening program have allowed us to analyze the relative importance of physicochemical parameters in influencing the inhibitory activities. Increased molecular weight,...
journal_title:Current pharmaceutical design
pub_type: 杂志文章
doi:10.2174/1381612043384925
更新日期:2004-01-01 00:00:00
abstract:BACKGROUND:Enhancing a compound's biological activity is the central task for lead optimization in small molecules drug discovery. However, it is laborious to perform many iterative rounds of compound synthesis and bioactivity tests. To address the issue, it is highly demanding to develop high quality in silico bioacti...
journal_title:Current pharmaceutical design
pub_type: 杂志文章
doi:10.2174/1381612826666200427111309
更新日期:2020-01-01 00:00:00
abstract::Synaptic plasticity is now known to occur at glutamate synapses throughout the brain, including the neocortex, and to play a role in neurodevelopment as well as in a broad spectrum of adult neural functions. Here the hypothesis that synaptic plasticity, specifically long term depression, is the neural substrate that m...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612819666140110122307
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:Polycystic ovary syndrome (PCOS) is a frequent female reproductive endocrine disease. It has been associated with a number of severe reproductive and metabolic abnormalities. However, there are still open questions especially regarding the best long-term management. METHODS:We summarized the literature focu...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612825666190130104922
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:Utilization of macroalgae has gained much attention in the field of pharmaceuticals, nutraceuticals, food and bioenergy. Macroalgae has been widely consumed in Asian countries as food from ancient days and proved that it has potential bioactive compounds which are responsible for its nutritional properties. ...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612825666190425161630
更新日期:2019-01-01 00:00:00
abstract::Our current understanding of cancer suggests that every tumour has individual features. Approaches to cancer treatment require thorough comprehension of the mechanisms triggering genomic instability and protecting cancer cells from therapeutic treatments. Base excision repair (BER) is a frontline DNA repair system tha...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612823666170710123602
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND:At sufficient sun exposure, humans can synthesize vitamin D3 endogenously in their skin, but today's lifestyle makes the secosteroid a true vitamin that needs to be taken up by diet or supplementation with pills. The vitamin D3 metabolite 1α,25-dihydroxyvitamin D3 acts as a nuclear hormone activating the tra...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612825666190705193227
更新日期:2019-01-01 00:00:00
abstract::Chronic pain is a widespread healthcare problem affecting not only the patient but in many ways all the society. Chronic pain is a disease itself that endures for a long period of time and it is resistant to the majority of medical treatments that provide modest improvements in pain and minimum improvements in physica...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612820666140314150634
更新日期:2014-01-01 00:00:00
abstract::Obesity, a chronic low-grade inflammation disorder characterized by an expansion in adipose tissue mass, is rapidly expanding worldwide leading to an increase in the incidence of comorbidities such as insulin resistance, type 2 diabetes and cardiovascular diseases. This has led to a renewed interest in the adipose tis...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612822666151109111958
更新日期:2016-01-01 00:00:00
abstract::A large body of evidence has accumulated indicating involvement of oxidative stress (OS) in the mode of action of various bioactive substances, including those of the immune system. The data for anticancer drugs (main and miscellaneous) are summarized herein. Although diverse origins pertain, reactive oxygen species (...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/1381612003401046
更新日期:2000-02-01 00:00:00
abstract::Marine invertebrates, especially tunicates, are a lucrative resource for the discovery of new lead compounds for the development of clinically utilized drugs. This review describes the isolation, synthesis and biological activities of several classes of marine-derived butenolide natural products, namely rubrolides and...
journal_title:Current pharmaceutical design
pub_type: 杂志文章
doi:10.2174/1381612826666200518110617
更新日期:2020-01-01 00:00:00
abstract::The last decade, the number of health economic evaluations has increased substantially in the field of child psychiatry. The objective of the present paper is to offer an overview of economic evaluations of child psychiatric drug treatment. Major electronic databases, as well as abstract booklets from international cl...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/138161210791959917
更新日期:2010-01-01 00:00:00
abstract::Oxidative and nitrosative stress triggers DNA strand breakage, which then activates the nuclear enzyme poly(ADP-ribose) polymerase (PARP). One of the key triggers of DNA single strand breakage in pathophysiological conditions is peroxynitrite, a reactive species produced from the reaction of nitric oxide and superoxid...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
doi:10.2174/138161206777947579
更新日期:2006-01-01 00:00:00