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https://www.readbyqxmd.com/read/28509852/inhaled-antibiotic-therapy-in-chronic-respiratory-diseases
#1
REVIEW
Diego J Maselli, Holly Keyt, Marcos I Restrepo
The management of patients with chronic respiratory diseases affected by difficult to treat infections has become a challenge in clinical practice. Conditions such as cystic fibrosis (CF) and non-CF bronchiectasis require extensive treatment strategies to deal with multidrug resistant pathogens that include Pseudomonas aeruginosa, Methicillin-resistant Staphylococcus aureus, Burkholderia species and non-tuberculous Mycobacteria (NTM). These challenges prompted scientists to deliver antimicrobial agents through the pulmonary system by using inhaled, aerosolized or nebulized antibiotics...
May 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28507469/lungs-deposition-and-pharmacokinetic-study-of-submicron-budesonide-particles-in-wistar-rats-intended-for-immediate-effect-in-asthma
#2
Abdul Rauf, Aseem Bhatnagar, S S Sisodia, Roop K Khar, Farhan J Ahmad
The purpose of the present investigation was to study the aerosolization, lungs deposition and pharmacokinetic study of inhalable submicron particles of budesonide in male Wistar rats. Submicron particles were prepared by antisolvent nanoprecipitation method and freeze-dried to obtain free flowing powder. The freeze-drying process yielded dry powder with desirable aerodynamic properties for inhalation therapy. An in-house model inhaler was designed to deliver medicine to lungs, optimized at dose level of 10 mg for 30 sec of fluidization...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28499855/electrolyte-type-and-nozzle-composition-affect-the-process-of-vibrating-membrane-nebulization
#3
Moritz Beck-Broichsitter, Nina Oesterheld
The size of airborne particles determines their deposition pattern within the lungs and therefore, the efficacy of inhalation therapy. The present study analyzed factors affecting liquid atomization performed by vibrating-membrane technology. First, the process of vibrating-membrane nebulization (eFlow(®)rapid and Aeroneb(®) Pro) was challenged with numerous inorganic salts and active pharmaceutical ingredients. All investigated samples caused a sigmoidal decrease in aerosol droplet size upon an increase in concentration...
May 9, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28485320/aerosolized-amikacin-as-adjunctive-therapy-of-ventilator-associated-pneumonia-caused-by-multidrug-resistant-gram-negative-bacteria-a-single-center-randomized-controlled-trial
#4
Chang Liu, Yu-Ting Zhang, Zhi-Yong Peng, Qing Zhou, Bo Hu, Hui Zhou, Jian-Guo Li
BACKGROUND: Aerosolized amikacin (AA) is a current option for the management of ventilator-associated pneumonia (VAP) caused by multidrug-resistant Gram-negative bacteria (MDR-GNB), as it is reported that AA could increase the alveolar level of the drug without increasing systemic toxicity. This study aimed to evaluate the efficacy and safety of AA as an adjunctive therapy for VAP caused by MDR-GNB. METHODS: In this single-center, double-blind study conducted in a 36-bed general Intensive Care Unit (ICU) in a tertiary hospital from June 2014 to June 2016, 52 ICU patients with confirmed MDR-GNB VAP were randomized to two groups (AA group, n = 27 and placebo group, n = 25)...
May 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28480760/tissue-pharmacokinetics-and-pharmacodynamics-of-ambisome%C3%A2-l-ambis-in-uninfected-and-infected-animals-and-their-effects-on-dosing-regimens
#5
J P Adler-Moore, R T Proffitt, J A Olson, G M Jensen
By selecting a unique combination of lipids and amphotericin B, the liposome composition for AmBisome (L-AmBis) has been optimized resulting in a formulation that is minimally toxic, targets to fungal cell walls, and distributes into and remains for days to weeks in various host tissues at drug levels above the MIC for many fungi. Procedures have been standardized to ensure that large scale production of the drug retains the drug's low toxicity profile, favorable pharmacokinetics and antifungal efficacy. Tissue accumulation and clearance with single or multiple intravenous administration is similar in uninfected and infected animal species, with tissue accumulation being dose-dependent and the liver and spleen retaining the most drug...
May 7, 2017: Journal of Liposome Research
https://www.readbyqxmd.com/read/28468884/antibody-preparations-from-human-transchromosomic-cows-exhibit-prophylactic-and-therapeutic-efficacy-versus-venezuelan-equine-encephalitis-virus
#6
Christina L Gardner, Chengqun Sun, Thomas Luke, Kanakatte Raviprakash, Hua Wu, Jin-An Jiao, Eddie Sullivan, Douglas S Reed, Kate D Ryman, William B Klimstra
Venezuelan equine encephalitis virus (VEEV) is a mosquito-borne RNA virus that causes low mortality but high morbidity in humans. In addition to natural outbreaks, there is potential for exposure to VEEV via aerosolized virus particles. There are currently no FDA-licensed vaccines or antiviral therapies for VEEV. Passive immunotherapy is an approved method used to treat individuals against several pathogens and toxins. Human polyclonal antibodies (pAbs) are ideal, but this is dependent upon serum from convalescent human donors, which is in limited supply...
May 3, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28463041/effect-of-pressurized-metered-dose-inhaler-spray-characteristics-and-particle-size-distribution-on-drug-delivery-efficiency
#7
Morteza Yousefi, Kiao Inthavong, Jiyuan Tu
BACKGROUND: A key issue in pulmonary drug delivery is improvement of the delivery device for effective and targeted treatment. Pressurized metered dose inhalers (pMDIs) are the most popular aerosol therapy device for treating lung diseases. This article studies the effect of spray characteristics: injection velocity, spray cone angle, particle size distribution (PSD), and its mass median aerodynamic diameter (MMAD) on drug delivery. METHODS: An idealized oral airway geometry, extending from mouth to the main bronchus, was connected to a pMDI device...
May 2, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28448027/dry-powder-and-nebulized-aerosol-inhalation-of-pharmaceuticals-delivered-to-mice-using-a-nose-only-exposure-system
#8
Jonathan E Phillips, Xuxia Zhang, James A Johnston
Obstructive respiratory diseases like asthma and chronic obstructive pulmonary disease (COPD) are currently treated by inhaled anti-inflammatory and bronchodilator drugs. Despite the availability of multiple treatments, both diseases are growing public health concerns. The majority of asthma patients are well controlled on current inhaled therapies but a substantial number of patients with severe asthma are not. Asthma affects an estimated 300 million people worldwide and approximately 20 percent have a severe form of the disease...
April 6, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28407227/systematic-review-of-pressurized-intraperitoneal-aerosol-chemotherapy-for-the-treatment-of-advanced-peritoneal-carcinomatosis
#9
REVIEW
F Grass, A Vuagniaux, H Teixeira-Farinha, K Lehmann, N Demartines, M Hübner
BACKGROUND: Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a minimally invasive approach under investigation as a novel treatment for patients with peritoneal carcinomatosis of various origins. The aim was to review the available evidence on mechanisms, clinical effects and risks. METHODS: This was a systematic review of the literature on pressurized intraperitoneal chemotherapy published between January 2000 and October 2016. All types of scientific report were included...
May 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/28394614/a-synthetic-macromolecular-antibiotic-platform-for-inhalable-therapy-against-aerosolized-intracellular-alveolar-infections
#10
Debobrato Das, Jasmin Chen, Selvi Srinivasan, Abby Michelle Kelly, Brian Lee, Hye-Nam Son, Frank Radella, Timothy E West, Daniel M Ratner, Anthony J Convertine, Shawn J Skerrett, Patrick S Stayton
Lung-based intracellular bacterial infections remain one of the most challenging infectious disease settings. For example, the current standard for treating Franciscella tularensis pneumonia (tularemia) relies on prolonged administration of oral and intravenous antibiotics that poorly achieve and sustain pulmonary drug bioavailability. Inhalable antibiotic formulations are approved and in clinical development for upper respiratory infections, but sustained drug dosing from inhaled antibiotics against alveolar intracellular infections remains a current unmet need...
April 10, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28391040/pegylated-composite-nanoparticles-of-plga-and-polyethylenimine-for-safe-and-efficient-delivery-of-pdna-to-lungs
#11
Atul Kolte, Sushilkumar Patil, Pierre Lesimple, John W Hanrahan, Ambikanandan Misra
Achieving stable, efficient and non-toxic pulmonary gene delivery is most challenging requirement for successful gene therapy to lung. Composite nanoparticles (NPs) of the poly(lactic-co-glycolic acid) (PLGA) and cationic polymer polyethyleneimine (PEI) is an efficient alternative to viral and liposomal vectors for the pulmonary delivery of pDNA. NPs with different weight ratios (0-12.5%w/w) of PLGA/PEI were prepared and characterized for size, morphology, surface charge, pDNA loading and in vitro release. The in vitro cell uptake and transfection studies in the CFBE41o-cell line revealed that NPs with 10% w/w PEI were more efficient but they exhibited significant cytotoxicity in MTT assays, challenging the safety of this formulation...
April 6, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28389274/significance-of-breath-hold-time-in-dry-powder-aerosol-drug-therapy-of-copd-patients
#12
Alpár Horváth, Imre Balásházy, Gábor Tomisa, Árpád Farkas
Aerosol drugs are effectively used to treat chronic respiratory diseases. The efficiency of the therapy depends also on the amount and distribution of drug deposited within the airways. The objective of this study is to apply numerical techniques to analyse the effect of the duration of breath-hold after the inhalation of six different commercialized dry powder drugs on their lung deposition. For this purpose a computational airway deposition model has been adapted and validated to the special case of therapeutic aerosols...
April 4, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28355706/-clinical-effect-of-rock-salt-aerosol-therapy-in-treatment-of-occupational-allergic-contact-dermatitis
#13
M L Sun, L Song, H M Yang, D M Shi, Y L Bi
Objective: To investigate the clinical effect and safety of rock salt aerosol therapy in the treatment of occupational allergic contact dermatitis. Methods: A total of 65 patients with acute exacerbation of occupational allergic contact dermatitis who were treated in the Outpatient Service and Inpatient Department of our hospital from March 2013 to December 2015 were enrolled and randomly divided into observation group and control group using a random number table. Both groups were givensymptomatic treatment including desensitization, and the patients in the observation group were given rock salt aerosol therapy for 2 courses in addition to the symptomatic treatment...
February 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28352199/survey-on-attitudes-of-italian-pediatricians-toward-cough
#14
Alessandro Zanasi, Luigi Morcaldi, Salvatore Cazzato, Massimiliano Mazzolini, Marzia Lecchi, Antonio Maria Morselli-Labate, Marianna Mastroroberto, Roberto W Dal Negro
CONTEXT: Children's cough is a daily concern for most pediatricians. The management of both acute and chronic cough requires a systematic and comprehensive approach. Despite the approved protocols for management, the pediatric assessment of cough and the corresponding prescribing attitude frequently do not fit these protocols, which can be affected by parental suggestions - sometimes substantially. OBJECTIVE: The objective of this study was to investigate both the perception and the behavior of a representative sample of Italian pediatricians toward cough in real life...
2017: ClinicoEconomics and Outcomes Research: CEOR
https://www.readbyqxmd.com/read/28351615/a-tantalum-oxide-based-core-shell-nanoparticle-for-triple-modality-image-guided-chemo-thermal-synergetic-therapy-of-esophageal-carcinoma
#15
Yushen Jin, Xibo Ma, Shuai Zhang, Hui Meng, Min Xu, Xin Yang, Wanhai Xu, Jie Tian
Early detection and therapy of esophageal cancer is very important for improving the prognosis and survival rate of the patient. A theranostic agent that combines multimodal imaging with cancer therapy may be used for augmenting the visualization and treatment of the cancer. Herein, we report the synthesis of a hollow tantalum oxide (TaOx) nanoparticle that was successfully engineered by encapsulation of polypyrrole (PPy) and doxorubicin (DOX) in the core and conjugation with a near infrared fluorescence dye (NIRDye800) on the shell of the hollow TaOx nanoparticles...
March 27, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28346048/mabdelivery-administration-routes-for-antibody-therapy-third-labex-mabimprove-industrial-workshop-july-2-2015-tours-france
#16
Elsa Bodier-Montagutelli, Renaud Respaud, Hervé Watier, Audrey Guillon-Munos
The annual "LabEx MAbImprove Industrial Workshops" are primarily intended to provide a comprehensive view about topics of interest for the pharmaceutical industry to scientists involved in research on therapeutic antibodies. The third workshop in this series, held July 2, 2015 in Tours, was dedicated to the optimization of delivery, namely all processes leading monoclonal antibodies to reach their target site. The commonly used intravenous (IV) route, although advantageous in terms of pharmacokinetics and pharmacodynamics, presents some disadvantages in terms of patients' convenience, therapeutic target access or treatment cost...
May 2017: MAbs
https://www.readbyqxmd.com/read/28322141/lessons-learned-from-gemcitabine-impact-of-therapeutic-carrier-systems-and-gemcitabine-s-drug-conjugates-on-cancer-therapy
#17
REVIEW
Sathish Dyawanapelly, Animesh Kumar, Manish K Chourasia
Currently, drug delivery systems have a high impact in cancer therapy and are receiving more attention than conventional cancer treatment modalities. Compared with current cancer therapies, gemcitabine (2', 2'-difluoro-2'-deoxycytidine) has been proven to be an effective chemotherapeutic agent against pancreatic, colon, bladder, breast, ovarian, non-small-cell lung, and head and neck cancers in combination with other anticancer agents. To improve the safety and efficacy of cytotoxic drugs, several drug delivery systems have been explored...
2017: Critical Reviews in Therapeutic Drug Carrier Systems
https://www.readbyqxmd.com/read/28321811/interleukin-2-old-and-new-approaches-to-enhance-immune-therapeutic-efficacy
#18
Pooja Dhupkar, Nancy Gordon
Interleukin-2 (IL-2) is a very well-known cytokine that has been studied for the past 35 years. It plays a major role in the growth and proliferation of many immune cells such NK and T cells. It is an important immunotherapy cytokine for the treatment of various diseases including cancer. Systemic delivery of IL-2 has shown clinical benefit in renal cell carcinoma and melanoma patients. However, its use has been limited by the numerous toxicities encountered with the systemic delivery. Intravenous IL-2 causes the well-known "capillary leak syndrome," or the leakage of fluid from the circulatory system to the interstitial space resulting in hypotension (low blood pressure), edema, and dyspnea that can lead to circulatory shock and eventually cardiopulmonary collapse and multiple organ failure...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28289553/%C3%AE-gal-nanoparticles-in-wound-and-burn-healing-acceleration
#19
REVIEW
Uri Galili
Significance: Rapid recruitment and activation of macrophages may accelerate wound healing. Such accelerated healing was observed in wounds and burns of experimental animals treated with α-gal nanoparticles. Recent Advances: α-Gal nanoparticles present multiple α-gal epitopes (Galα1-3Galβ1-4GlcNAc-R). α-Gal nanoparticles applied to wounds bind anti-Gal (the most abundant antibody in humans) and generate chemotactic complement peptides, which rapidly recruit macrophages. Fc/Fc receptor interaction between anti-Gal coating the α-gal nanoparticles and recruited macrophages activates macrophages to produce cytokines that accelerate healing...
March 1, 2017: Advances in Wound Care
https://www.readbyqxmd.com/read/28288490/development-in-vitro-characterization-antitumor-and-aerosol-performance-evaluation-of-respirable-prepared-by-self-nanoemulsification-method
#20
Neda Naseri, Parvin Zakeri-Milani, Hamed Hamishehkar, Younes Pilehvar-Soltanahmadi, Hadi Valizadeh
Poor water solubility and low oral bioavailability limit the clinical application of Erlotinib as an anticancer. For this purpose, we encapsulated erlotinib in the solid lipid nanoparticles (SLN) and designed a spray-dried dry powder inhalable (DPI) formulation. Erlotinib-loaded SLNs were prepared using self-nanoemulsifying and characterized for physicochemical properties. Pulmonary deposition of spray-dried DPI formulation was performed using Next Generation Impactor. The particle size and zeta potential of Erlotinib-loaded SLNs were 300 to 800 nm and -18 to -32 mV, respectively...
March 13, 2017: Drug Research
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