administration routes
Recently Published Documents


TOTAL DOCUMENTS

351
(FIVE YEARS 174)

H-INDEX

27
(FIVE YEARS 9)

2022 ◽  
Vol 4 (1) ◽  
Author(s):  
Kevin F. Boehnke ◽  
Laura Yakas ◽  
J. Ryan Scott ◽  
Melissa DeJonckheere ◽  
Evangelos Litinas ◽  
...  

Abstract Background The wide heterogeneity of available cannabis products makes it difficult for physicians to appropriately guide patients. In the current study, our objective was to characterize naturalistic cannabis use routines and explore associations between routines and reported benefits from consuming cannabis. Methods We performed a mixed methods analysis of n=1087 cross-sectional survey responses from adults with self-reported chronic pain using cannabis for symptom management in the USA and Canada. First, we qualitatively analyzed responses to an open-ended question that assessed typical cannabis use routines, including administration routes, cannabinoid content, and timing. We then sub-grouped responses into categories based on inhalation (smoking, vaporizing) vs. non-inhalation (e.g., edibles). Finally, we investigated subgroups perceptions of how cannabis affected pain, overall health, and use of medications (e.g., substituting for opioids, benzodiazepines). Substitutions were treated as a count of medication classes, while responses for both pain and health were analyzed continuously, with − 2 indicating health declining a lot or pain increasing a lot and 2 indicating that health improved a lot or pain decreased a lot. Results Routines varied widely in terms of administration routes, cannabinoid content, and use timing. Overall, 18.8%, 36.2%, and 45% used non-inhalation, inhalation, and non-inhalation + inhalation routes, respectively. Those who used inhalation routes were younger (mean age 46.5 [inhalation] and 49.2 [non-inhalation + inhalation] vs. 56.3 [inhalation], F=36.1, p<0.001), while a higher proportion of those who used non-inhalation routes were female (72.5% non-inhalation vs. 48.3% inhalation and 65.3% non-inhalation + inhalation, X2=59.6, p<0.001). THC-rich products were typically used at night, while CBD-rich products were more often used during the day. While all participants reported similarly decreased pain, participants using non-inhalation + inhalation administration routes reported larger improvements in health than the non-inhalation (mean difference = 0.32, 95% CI: 0.07–0.37, p<0.001) and inhalation subgroups (mean difference = 0.22, 95% CI: 0.07–0.37, p=0.001). Similarly, the non-inhalation + inhalation group had significantly more medication substitutions than those using non-inhalation (mean difference = 0.62, 95% CI: 0.33–0.90, p<0.001) and inhalation administration routes (mean difference = 0.45, 95% CI: 0.22–0.69, p<0.001), respectively. Conclusions Subgrouping medical cannabis patients based on administration route profile may provide useful categories for future studies examining the risks and benefits of medical cannabis.


2022 ◽  
pp. jnumed.121.263453
Author(s):  
Jasmin Mona Klose ◽  
Jasmin Wosniack ◽  
Janette Iking ◽  
Magdalena Staniszewska ◽  
Fadi Zarrad ◽  
...  

Pharmaceutics ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 90
Author(s):  
Lorena Bonilla ◽  
Marta Espina ◽  
Patricia Severino ◽  
Amanda Cano ◽  
Miren Ettcheto ◽  
...  

This review highlights the application of lipid nanoparticles (Solid Lipid Nanoparticles, Nanostructured Lipid Carriers, or Lipid Drug Conjugates) as effective drug carriers for pathologies affecting the posterior ocular segment. Eye anatomy and the most relevant diseases affecting the posterior segment will be summarized. Moreover, preparation methods and different types and subtypes of lipid nanoparticles will also be reviewed. Lipid nanoparticles used as carriers to deliver drugs to the posterior eye segment as well as their administration routes, pharmaceutical forms and ocular distribution will be discussed emphasizing the different targeting strategies most recently employed for ocular drug delivery.


Author(s):  
Carolina Y Garcia ◽  
Hyesuk Seo ◽  
David A Sack ◽  
Weiping Zhang

There are no vaccines licensed for enterotoxigenic Escherichia coli (ETEC), a leading bacterial cause of children’s diarrhea and travelers’ diarrhea. MecVax, a multivalent E. coli vaccine candidate composed of two epitope- and structure-based polyvalent proteins (toxoid fusion 3xSTa N12S -mnLT R192G/L211A and CFA/I/II/IV MEFA), is to induce broad anti-adhesin and antitoxin antibodies against heterogeneous ETEC pathovars. Administered intraperitoneally (IP) or intramuscularly (IM), MecVax was shown to induce antibodies against seven ETEC adhesins (CFA/I, CS1-CS6), which are produced by ETEC pathovars causing over 60% of ETEC-associated diarrheal cases and the moderate-to-severe cases, and both toxins (heat-labile toxin - LT and heat-stable toxin - STa) expressed by all ETEC strains. To further characterize immunogenicity of this protein-based injectable subunit vaccine candidate and to explore other parenteral administration routes for the product, in this study, we intradermally (ID) immunized mice with MecVax and measured antigen-specific antibody responses and further antibody functional activities against the adhesins and toxins targeted by the vaccine. Data showed that mice ID immunized with MecVax developed robust anti-CFA/I, -CS1, -CS2, -CS3, -CS4, -CS5, -CS6, -LT and anti-STa IgG responses. Furthermore, antibodies derived from MecVax via ID route inhibited adherence of ETEC or E. coli strains expressing any of the seven target adhesins (CFA/I, CS1-CS6) and neutralized enterotoxicity of LT and STa toxins. These results confirmed broad immunogenicity of MecVax and suggested that this multivalent ETEC subunit vaccine candidate can be effectively delivered via ID route. IMPORTANCE Enterotoxigenic Escherichia coli (ETEC) is a leading bacterial cause of diarrhea in children living in developing countries and international travelers. Developing an effective vaccine for ETEC diarrhea has been hampered because of challenges of virulence heterogeneity and difficulties of inducing neutralizing antibodies against the key STa toxin. MecVax, a subunit vaccine candidate carrying two polyvalent protein antigens for the first time induces functional antibodies against the most important ETEC adhesins which are associated with a majority of diarrheal cases and the moderate-to-severe cases but also against enterotoxicity of LT and more importantly STa toxin which plays a key role in children’s diarrhea and travelers’ diarrhea, potentially leading to development of a truly effective ETEC vaccine. Data from this study may also indicated that this ETEC subunit vaccine can be administered effectively via ID route, expanding clinical administration options for this vaccine product.


2021 ◽  
Vol 15 ◽  
Author(s):  
Choongheon Lee ◽  
Anjali K. Sinha ◽  
Kenneth Henry ◽  
Anqi W. Walbaum ◽  
Peter A. Crooks ◽  
...  

Stimulation of cholinergic efferent neurons innervating the inner ear has profound, well-characterized effects on vestibular and auditory physiology, after activating distinct ACh receptors (AChRs) on afferents and hair cells in peripheral endorgans. Efferent-mediated fast and slow excitation of vestibular afferents are mediated by α4β2*-containing nicotinic AChRs (nAChRs) and muscarinic AChRs (mAChRs), respectively. On the auditory side, efferent-mediated suppression of distortion product otoacoustic emissions (DPOAEs) is mediated by α9α10nAChRs. Previous characterization of these synaptic mechanisms utilized cholinergic drugs, that when systemically administered, also reach the CNS, which may limit their utility in probing efferent function without also considering central effects. Use of peripherally-acting cholinergic drugs with local application strategies may be useful, but this approach has remained relatively unexplored. Using multiple administration routes, we performed a combination of vestibular afferent and DPOAE recordings during efferent stimulation in mouse and turtle to determine whether charged mAChR or α9α10nAChR antagonists, with little CNS entry, can still engage efferent synaptic targets in the inner ear. The charged mAChR antagonists glycopyrrolate and methscopolamine blocked efferent-mediated slow excitation of mouse vestibular afferents following intraperitoneal, middle ear, or direct perilymphatic administration. Both mAChR antagonists were effective when delivered to the middle ear, contralateral to the side of afferent recordings, suggesting they gain vascular access after first entering the perilymphatic compartment. In contrast, charged α9α10nAChR antagonists blocked efferent-mediated suppression of DPOAEs only upon direct perilymphatic application, but failed to reach efferent synapses when systemically administered. These data show that efferent mechanisms are viable targets for further characterizing drug access in the inner ear.


2021 ◽  
pp. 77-100
Author(s):  
João Augusto Oshiro-Júnior ◽  
Kammila Martins Nicolau Costa ◽  
Isadora Frigieri ◽  
Bruna Galdorfini Chiari-Andréo

Biomedicines ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 1734
Author(s):  
Marie J. Pauwels ◽  
Charysse Vandendriessche ◽  
Roosmarijn E. Vandenbroucke

The treatment of central nervous system (CNS) pathologies is severely hampered by the presence of tightly regulated CNS barriers that restrict drug delivery to the brain. An increasing amount of data suggests that extracellular vesicles (EVs), i.e., membrane derived vesicles that inherently protect and transfer biological cargoes between cells, naturally cross the CNS barriers. Moreover, EVs can be engineered with targeting ligands to obtain enriched tissue targeting and delivery capacities. In this review, we provide a detailed overview of the literature describing a natural and engineered CNS targeting and therapeutic efficiency of different cell type derived EVs. Hereby, we specifically focus on peripheral administration routes in a broad range of CNS diseases. Furthermore, we underline the potential of research aimed at elucidating the vesicular transport mechanisms across the different CNS barriers. Finally, we elaborate on the practical considerations towards the application of EVs as a brain drug delivery system.


2021 ◽  
Vol 2 (1) ◽  
pp. 1-4
Author(s):  
Bicheng Wang ◽  
◽  
Boya Xiao ◽  
◽  

The novel coronavirus has a significant impact on the routine clinical practice for cancer patients in China since December 2019. During the epidemic in mainland China, especially Wuhan, the intravenous chemotherapies of cancer patients were considerably delayed. Up to now, cancer patients throughout the world directly encounter similar obstacles. For patients who have the right to choose chemotherapeutic regimens with different administration routes, oral drugs can be considered to be applied. In this mini-review, oral chemotherapeutic drugs were compared with intravenous drugs in seven types of tumors. Accordingly, we intended to provide useful suggestions for clinicians to balance the benefits and risks of oral against intravenous chemotherapies and to choose properly substituted oral chemotherapeutic regimens for cancer patients amid the coronavirus disease 2019 (COVID-19) pandemic.


Author(s):  
Jamie Tully ◽  
Amelia Dahlén ◽  
Connor Haggarty ◽  
Helgi Schiöth ◽  
Samantha Brooks

There is a growing interest in the psychiatric properties of the dissociative anesthetic ketamine, as single doses have been shown to have fast-acting mood-enhancing and anxiolytic effects, which persist for up to a week after the main psychoactive symptoms have diminished. Therefore, ketamine poses potential beneficial effects in patients with refractory anxiety disorders, where other conventional anxiolytics have been ineffective. Ketamine is a non-competitive antagonist of the N-methyl-D-aspartate (NMDA) glutamate receptor, which underlies its induction of pain relief and anaesthesia. However, the role of NMDA receptors in anxiety reduction is still relatively unknown. To fill this paucity in the literature, this systematic review assesses the evidence that ketamine significantly reduces refractory anxiety and discusses to what extent this may be mediated by NMDA receptor antagonism. We highlight the temporary nature of the anxiolytic effects and discuss the high discrepancy among the study designs regarding many fundamental factors such as administration routes, complementary treatments, and other treatments.


Sign in / Sign up

Export Citation Format

Share Document