scholarly journals Nanotechnology based solutions for anti-leishmanial impediments: a detailed insight

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Humzah Jamshaid ◽  
Fakhar ud Din ◽  
Gul Majid Khan
Keyword(s):  
Oral Delivery ◽  
Cytotoxic T Cells ◽  
Antigen Delivery ◽  
Cutaneous Lesions ◽  
The Past ◽  
Parasitic Resistance ◽  
Nano Drug Delivery ◽  
Surface Modified ◽  
Multiple Drugs ◽  
Poor Efficacy

AbstractAs a neglected tropical disease, Leishmaniasis is significantly instigating morbidity and mortality across the globe. Its clinical spectrum varies from ulcerative cutaneous lesions to systemic immersion causing hyperthermic hepato-splenomegaly. Curbing leishmanial parasite is toughly attributable to the myriad obstacles in existing chemotherapy and immunization. Since the 1990s, extensive research has been conducted for ameliorating disease prognosis, by resolving certain obstacles of conventional therapeutics viz. poor efficacy, systemic toxicity, inadequate drug accumulation inside the macrophage, scarce antigenic presentation to body’s immune cells, protracted length and cost of the treatment. Mentioned hurdles can be restricted by designing nano-drug delivery system (nano-DDS) of extant anti-leishmanials, phyto-nano-DDS, surface modified—mannosylated and thiolated nano-DDS. Likewise, antigen delivery with co-transportation of suitable adjuvants would be achievable through nano-vaccines. In the past decade, researchers have engineered nano-DDS to improve the safety profile of existing drugs by restricting their release parameters. Polymerically-derived nano-DDS were found as a suitable option for oral delivery as well as SLNs due to pharmacokinetic re-modeling of drugs. Mannosylated nano-DDS have upgraded macrophage internalizing of nanosystem and the entrapped drug, provided with minimal toxicity. Cutaneous Leishmaniasis (CL) was tackling by the utilization of nano-DDS designed for topical delivery including niosomes, liposomes, and transfersomes. Transfersomes, however, appears to be superior for this purpose. The nanotechnology-based solution to prevent parasitic resistance is the use of Thiolated drug-loaded and multiple drugs loaded nano-DDS. These surfaces amended nano-DDS possess augmented IC50 values in comparison to conventional drugs and un-modified nano-DDS. Phyto-nano-DDS, another obscure horizon, have also been evaluated for their anti-leishmanial response, however, more intense assessment is a prerequisite. Impoverished Cytotoxic T-cells response followed by Leishmanial antigen proteins delivery have also been vanquished using nano-adjuvants. The eminence of nano-DDS for curtailment of anti-leishmanial chemotherapy and immunization associated challenges are extensively summed up in this review. This expedited approach is ameliorating the Leishmaniasis management successfully. Alongside, total to partial eradication of this disease can be sought along with associated co-morbidities.

scholarly journals Role of Nurr1 in Carcinogenesis and Tumor Immunology: A State of the Art Review

Cancers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 3044 ◽  
Author(s):  
Peter Kok-Ting Wan ◽  
Michelle Kwan-Yee Siu ◽  
Thomas Ho-Yin Leung ◽  
Xue-Tang Mo ◽  
Karen Kar-Loen Chan ◽  
...  
Keyword(s):  
T Cells ◽  
Immune Responses ◽  
Antitumor Immunity ◽  
Cytotoxic T Cells ◽  
Early Response ◽  
Downstream Signaling ◽  
Wide Range ◽  
Immunotherapeutic Strategy ◽  
Poor Efficacy

Nuclear receptor related-1 protein (Nurr1), coded by an early response gene, is involved in multiple cellular and physiological functions, including proliferation, survival, and self-renewal. Dysregulation of Nurr1 has been frequently observed in many cancers and is attributed to multiple transcriptional and post-transcriptional mechanisms. Besides, Nurr1 exhibits extensive crosstalk with many oncogenic and tumor suppressor molecules, which contribute to its potential pro-malignant behaviors. Furthermore, Nurr1 is a key player in attenuating antitumor immune responses. It not only potentiates immunosuppressive functions of regulatory T cells but also dampens the activity of cytotoxic T cells. The selective accessibility of chromatin by Nurr1 in T cells is closely associated with cell exhaustion and poor efficacy of cancer immunotherapy. In this review, we summarize the reported findings of Nurr1 in different malignancies, the mechanisms that regulate Nurr1 expression, and the downstream signaling pathways that Nurr1 employs to promote a wide range of malignant phenotypes. We also give an overview of the association between Nurr1 and antitumor immunity and discuss the inhibition of Nurr1 as a potential immunotherapeutic strategy.

Nanocargos: A Burgeoning Quest in Cancer Management

2020 ◽  
Vol 10 (2) ◽  
pp. 149-163
Author(s):  
Atul Jain ◽  
Teenu Sharma ◽  
Sumant Saini ◽  
Om Prakash Katare ◽  
Vandana. Soni ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Oral Delivery ◽  
Imaging Techniques ◽  
Intestinal Barrier ◽  
Oral Route ◽  
In Vitro Models ◽  
In Vitro Toxicity ◽  
Cancer Management ◽  
Surface Modified

Cancer, a complex series of diseased conditions, contributes to a significant health problem and is a leading cause of mortalities across the world. Lately, with the advent of improved diagnostics and imaging techniques, and newer advanced oral chemotherapeutics; millions of cancer affected people can lengthen their life span. Despite all the challenges associated with an active chemotherapeutic molecule like microenvironment and the intestinal barrier of the gastrointestinal tract (GIT) etc., the oral delivery remains the most acceptable route of drug administration. In this regard, nanotechnology has played a significant role in the counteracting the challenges encountered with newly developed molecules and aiding in improving their bioavailability and targetability to the tumour site, while administering through the oral route. Several literature instances document the usage of nanostructured drug delivery systems such as lipid-based, polymerbased or metallic nanomaterials to improve the efficacy of chemotherapy. Besides, sitespecific targeted surface-modified drug delivery system designed to deliver the active molecule has opened up to the newer avenues of nanotechnology. However, the issue of potential toxicity allied with nanotechnology cannot be compromised and thus, needs specific ethical regulations and guidelines. The various in vitro models have been developed to evaluate the in vitro toxicity profile which can be further correlated with the invivo model. Thus, this review provides a summarized account of the various aspects related to the role of nanotechnology in cancer therapy and various related issues thereof; that must be triumphed over to apprehend its full promise.

scholarly journals Non -fatal overdose among people who inject drugs in Tehran, Iran

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Mehdi Noroozi ◽  
Peter Higgs ◽  
Azadeh Bayani ◽  
Bahram Armoon ◽  
Ali Nazeri Astaneh ◽  
...  
Keyword(s):  
Risk Factors ◽  
Drug Use ◽  
People Who Inject Drugs ◽  
Statistical Significance ◽  
Cross Sectional Survey ◽  
The Past ◽  
Fatal Overdose ◽  
Increased Risk ◽  
Associated Risk Factors ◽  
Multiple Drugs

Abstract Background With increasing frequencies of non-fatal overdose in people who inject drugs (PWID), it is essential to improve our knowledge about associated risk factors for overdose to inform overdose prevention and assistance programs. The aim of present study was to determine the prevalence of non-fatal overdose and the associated risk factors among PWID in Tehran, Iran. Methods Snowball sampling was used to collect data from 465 participants in Tehran using a cross-sectional survey. Consenting participants who reported drug injecting in the past month and were able to speak and comprehend Farsi enough to respond to survey questions were interviewed. The endpoint of interest was non-fatal overdose in the previous 6 months, or answering “Yes” to the question: “In the last six months, have you ever overdosed by accident? (at least once)”. We used STATA v. 14 for this analysis. Statistical significance was defined as p < 0.05 for all analyses. Results Of 465 PWIDs who participated in this study, all were male, and about half had less than a high school education. The prevalence of self-reported non-fatal overdose in the past 6 months was 38% (CI95%: 34, 43%). Our findings indicate that characteristics and behaviors that were associated with an increased risk of experiencing an overdose in the past 6 months were drug use initiation under 22 years (AOR =2.2, P < 0.05), using methamphetamine (AOR =2.8, P < 0.05), and using multiple drugs at the same time (AOR =2.1, P < 0.05). Also, more recent initiates to injecting (< 2 years) had an increased risk of experiencing an overdose in the past 6 months. The odds of experiencing a non-fatal overdose among PWIDs who regularly attended NSP were 0.6 times less than for those who did not attend regularly (OR = 0.6,95% CI: 0.2–0.9). Conclusion Methamphetamine and alcohol use were the most significant association for non-fatal overdose among PWIDs. Our results indicate that intervention and prevention initiatives seeking to reduce overdoses among PWIDs should not only be focused on the primary drug used but also the use of alcohol and poly-drug use.

Surface-Modified Diamond Nanoparticles as Antigen Delivery Vehicles

1995 ◽  
Vol 6 (5) ◽  
pp. 507-511 ◽  
Author(s):  
Nir Kossovsky ◽  
Andrew Gelman ◽  
H. James Hnatyszyn ◽  
Samir Rajguru ◽  
Robin L. Garrell ◽  
...  
Keyword(s):  
Antigen Delivery ◽  
Diamond Nanoparticles ◽  
Delivery Vehicles ◽  
Surface Modified

scholarly journals Magnetic Source Imaging Localization of 14 and 6 Hz Positive Bursts

2019 ◽  
Vol 46 (6) ◽  
pp. 753-755 ◽  
Author(s):  
Puneet Jain ◽  
Ayako Ochi ◽  
Rohit Sharma ◽  
Hiroshi Otsubo
Keyword(s):  
Family History ◽  
Learning Disability ◽  
Source Imaging ◽  
Magnetic Source Imaging ◽  
The Past ◽  
Focal Seizures ◽  
Magnetic Source ◽  
Multiple Drugs

A 16-year-old boy with learning disability presented with nocturnal pharmaco-resistant focal seizures consisting of right arm/axilla pain, sometimes followed by tonic-clonic movements of right arm/leg since 8 years of age. He was on valproate and levetiracetam and had failed multiple drugs in the past. Family history and examination were unremarkable.

scholarly journals Surface-modified mucoadhesive microparticles as a controlled release system for oral delivery of insulin

Heliyon ◽  
2019 ◽  
Vol 5 (9) ◽  
pp. e02366 ◽  
Author(s):  
Momoh A. Mumuni ◽  
Frankilin C. Kenechukwu ◽  
Omeje C. Ernest ◽  
Adedokun M. Oluseun ◽  
Barikisu Abdulmumin ◽  
...  
Keyword(s):  
Controlled Release ◽  
Oral Delivery ◽  
Release System ◽  
Controlled Release System ◽  
Surface Modified

scholarly journals FDA-approved drugs for multiple sclerosis have no efficacy or disability data in non-Caucasian patients

CNS Spectrums ◽  
2019 ◽  
Vol 24 (03) ◽  
pp. 279-280 ◽  
Author(s):  
Jagannadha Avasarala
Keyword(s):  
Multiple Sclerosis ◽  
Clinical Studies ◽  
Phase 3 ◽  
The Past ◽  
Caucasian Patients ◽  
Approved Drugs ◽  
Multiple Drugs ◽  
Fda Approved Drugs

Pharmacotherapy of multiple sclerosis (MS) is evolving rapidly. Despite impressive gains over the past 2 decades in the approval of multiple drugs for MS, lack of recruitment of minorities with MS in phase 3 clinical studies is a persistent concern and skews efficacy and disability data.

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