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https://www.readbyqxmd.com/read/28643733/a-prospective-randomized-controlled-study-of-cisplatin-versus-carboplatin-based-regimen-in-advanced-squamous-nonsmall-cell-lung-cancer
#1
Amr Shafik Saad, Ramy R Ghali, May Ahmed Shawki
BACKGROUND: The use of cisplatin (Cis) versus carboplatin (Carb) in the treatment of advanced nonsmall cell lung cancer (NSCLC) is controversial. The aim of the study was to compare the safety and efficacy of Cis versus Carb in squamous NSCLC. PATIENTS AND METHODS: A prospective, randomized, controlled, open-label study was conducted on advanced squamous NSCLC patients who were randomly assigned to receive Cis (40 mg/m 2 [day 1 and day 8]) or Carb (area under the curve = 5 [day 1]) combined with gemcitabine [Gem] (1000 mg/m 2 [day 1 and day 8]) of a 3-week schedule for six cycles...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28639555/ginkgo-biloba-and-lycopene-are-effective-on-cisplatin-induced-ototoxicity
#2
Erkan Esen, Fatih Özdoğan, Seren Gülşen Gürgen, Halil Erdem Özel, Serdar Başer, Selahattin Genç, Adin Selçuk
OBJECTIVE: The purpose of this study was to examine the anti-ototoxic impact of Ginkgo biloba extract and lycopene on the model of cisplatin-induced ototoxicity in rats. MATERIALS AND METHODS: Thirty-two Wistar albino rats were examined with the distortion product otoacoustic emission (DPOAE) test (MADSEN Capella2 ; GN Otometrics, ICS Medical, Chicago USA), and they were randomly divided into four groups. Group 1 (n=8) was defined as the healthy control group. Cisplatin was given intraperitoneally as single dose of 12 mg/kg to group 2 (n=8), group 3 (n=8), and group 4 (n=8)...
June 21, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28636736/the-protective-effect-of-intratympanic-dexamethasone-on-streptomycin-ototoxicity-in-rats
#3
Aylin Gül, Engin Şengül, Beyhan Yılmaz, Fazıl Emre Özkurt, Mehmet Akdağ, Ayşenur Keleş, İsmail Topçu
The purpose of this experimental study was to investigate the protective role of intratympanically administered dexamethasone on the inner ears of rats that were exposed to streptomycin ototoxicity. Twenty-four adult Wistar albino rats were separated into 4 groups: Group 1 (only streptomycin), Group 2 (only intratympanic dexamethasone), Group 3 (streptomycin and intratympanic dexamethasone), and Group 4 (streptomycin and intratympanic saline). All rats were evaluated with distortion product otoacoustic emissions (DPOAE) tests before the start of treatment and on the day it ended...
June 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28636017/effect-of-cisplatin-on-the-transport-activity-of-pii-type-atpases
#4
Francesco Tadini-Buoninsegni, Giacomo Sordi, Serena Smeazzetto, Giovanni Natile, Fabio Arnesano
Cisplatin (cis-diamminedichlorido-Pt(ii)) is extensively used as a chemotherapeutic agent against various types of tumors. However, cisplatin administration causes serious side effects, including nephrotoxicity, ototoxicity and neurotoxicity. It has been shown that cisplatin can interact with P-type ATPases, e.g., Cu(+)-ATPases (ATP7A and ATP7B) and Na(+),K(+)-ATPase. Cisplatin-induced inhibition of Na(+),K(+)-ATPase has been related to the nephrotoxic effect of the drug. To investigate the inhibitory effects of cisplatin on the pumping activity of PII-type ATPases, electrical measurements were performed on sarcoplasmic reticulum Ca(2+)-ATPase (SERCA) and Na(+),K(+)-ATPase embedded in vesicles/membrane fragments adsorbed on a solid-supported membrane...
June 21, 2017: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/28633708/once-daily-dosing-of-amikacin-for-treatment-of-mycobacterium-abscessus-lung-disease
#5
H Lee, Y M Sohn, J Y Ko, S-Y Lee, B W Jhun, H Y Park, K Jeon, D H Kim, S-Y Kim, J E Choi, I J Moon, S J Shin, H J Park, W-J Koh
SETTING: Tertiary referral centre, Samsung Medical Center, South Korea. OBJECTIVE: To evaluate the pharmacokinetic parameters and toxicities of once-daily amikacin (AMK) dosing for lung disease due to Mycobacterium abscessus. DESIGN: A retrospective review of 48 patients with M. abscessus lung disease who received once-daily AMK for 4 weeks between January 2012 and June 2015. RESULTS: With a starting dose of 15 mg/kg/day and adjustment of AMK dose according to the peak serum level (Cmax), the Cmax target of 55-65 μg/ml was achieved in 31...
July 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28627458/sirna-loaded-biodegradable-nanocarriers-for-therapeutic-mapk1-silencing-against-cisplatin-induced-ototoxicity
#6
Ibrahima Youm, Matthew B West, Wei Li, Xiaoping Du, Don Ewert, Richard D Kopke
Ototoxicity represents a major adverse side-effect of cis-diamminedichloroplatinum-II (cisplatin, CDDP). The mitogen-activated protein kinase (MAPK) pathway is thought to play a central role in potentiating the apoptotic effect of CDDP within the cochlea. We hypothesized that prophylactic inhibition of MAPK signaling, using small interfering RNA (siRNA), might confer a protective effect against CDDP-induced apoptosis within the auditory sensory epithelia. To enhance the therapeutic utility of this approach, we synthesized biocompatible siMAPK1-loaded nanoparticles (NPs) and performed physicochemical characterizations for size, morphology, and drug loading and release kinetics, using dynamic light scattering, electron microscopy and spectrophotometric analyses, respectively...
June 13, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28625810/evaluating-the-ototoxicity-of-a-anti-mrsa-peptide-kr-12-a2
#7
Chung Man Sung, Hong Chan Kim, Yong Beom Cho, Song Yub Shin, Chul Ho Jang
INTRODUCTION: Methicillin-Resistant Staphylococcus aureus (MRSA) is an emerging problem for the treatment of chronic suppurative otitis media, and also for pediatric tympanostomy tube otorrhea. To date, there are no effective topical antibiotic drugs to treat MRSA otorrhea. OBJECTIVE: In this study, we evaluated the ototoxicity of topical KR-12-a2 solution on the cochlea when it applied topically in the middle ear of guinea pigs. METHODS: The antimicrobial activity of KR-12-a2 against MRSA strains was examined by using the inhibition zone test...
May 31, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28604316/when-students-become-patients-tb-disease-among-medical-undergraduates-in-cape-town-south-africa
#8
Helene-Mari Van der Westhuizen, Angela Dramowski
BACKGROUND: Medical students acquire latent tuberculosis (TB) infection at a rate of 23 cases/100 person-years. The frequency and impact of occupational TB disease in this population are unknown. METHODS: A self-administered questionnaire was distributed via email and social media to current medical students and recently graduated doctors (2010 - 2015) at two medical schools in Cape Town. Individuals who had developed TB disease as undergraduate students were eligible to participate...
May 24, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/28599874/cisplatin-induced-arrhythmia-electrolyte-imbalance-or-disturbance-of-the-sa-node
#9
REVIEW
Rabbab Oun, Edward Rowan
Since its approval in 1979 cisplatin has become one of the most extensively used chemotherapeutics in the clinic and although cell resistance and toxicity hinder its efficacy it continues to be a gold standard regimen. Cisplatin's side effects primarily include nephrotoxicity, gastrointestinal toxicity, neurotoxicity and ototoxicity. Cardiotoxicity is generally not defined as a side effect of cisplatin. However, over the past decade there has been a surge in the amount of clinical cases reporting a vast array of cardio-toxic events occurring during or shortly after cisplatin infusion, these range from angina to cardiac ischemia and chronic heart failure...
June 6, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28599263/environmental-exposures-to-lead-mercury-and-cadmium-and-hearing-loss-in-adults-and-adolescents-knhanes-2010-2012
#10
(no author information available yet)
BACKGROUND: The prevalence of hearing loss increases rapidly with aging. Hearing loss is common in all age groups, even in young adults and adolescents. A growing body of evidence has suggested that heavy metals have ototoxic effects, yet few epidemiological studies have investigated the association between heavy metals and hearing loss in a general population that includes adults and adolescents. OBJECTIVES: We examined the association between environmental exposures to lead, mercury, and cadmium and the risk of hearing loss in adults and adolescents while controlling for potential confounding factors, including noise exposures and clinical factors...
June 8, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28590156/hearing-loss-after-platinum-treatment-is-irreversible-in-noncranial-irradiated-childhood-cancer-survivors
#11
Eva Clemens, Andrica Ch de Vries, Antoinette Am Zehnhoff-Dinnesen, Wim Je Tissing, Jacqueline J Loonen, Saskia Fm Pluijm, Eline van Dulmen-den Broeder, Dorine Bresters, Birgitta Versluys, Leontien Cm Kremer, Helena J van der Pal, Sebastian Jccm Neggers, Martine van Grotel, Marry M van den Heuvel-Eibrink
Cisplatin and carboplatin are effective antineoplastic agents. They are also considered to be potentially highly ototoxic. To date, no long-term follow-up data from well-documented cohorts with substantial numbers of childhood cancer survivors (CCS) with platinum-related hearing loss are available. Therefore, in this study, we studied the reversibility of ototoxicity from discontinuation of treatment onwards in a national cohort of platinum-treated survivors with hearing loss at the end of cancer treatment...
June 7, 2017: Pediatric Hematology and Oncology
https://www.readbyqxmd.com/read/28583486/ototoxicity-associated-with-topical-administration-of-diclofenac-sodium-as-an-otic-drop-an-experimental-animal-study
#12
Engin Acioglu, Ozgur Yigit, Firat Onur, Ahmet Atas, Ela Araz Server, Eyup Kara
OBJECTIVES: The aim of the study is to evaluate the ototoxicity of topical diclofenac sodium in comparison to positive and negative controls prior to the investigation of analgesic and anti-inflammatory efficacy of the agent in otic administration. METHODS: Twenty four ears of 12 guinea pigs were included in the study. Wide myringotomy was performed on all tympanic membranes under general anesthesia and auditory brainstem responses (ABR) were evaluated. The subjects were separated into four groups, two groups received diclofenac sodium at low and high doses, positive controls received gentamicin and negative controls received isotonic sodium chloride topically for 14 days and ABRs were reevaluated...
July 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28572758/activation-of-chk1-in-supporting-cells-indirectly-promotes-hair-cell-survival
#13
Azadeh Jadali, Yu-Lan M Ying, Kelvin Y Kwan
The sensory hair cells of the inner ear are exquisitely sensitive to ototoxic insults. Loss of hair cells after exposure to ototoxic agents causes hearing loss. Chemotherapeutic agents such as cisplatin causes hair cell loss. Cisplatin forms DNA mono-adducts as well as intra- and inter-strand DNA crosslinks. DNA cisplatin adducts are repaired through the DNA damage response. The decision between cell survival and cell death following DNA damage rests on factors that are involved in determining damage tolerance, cell survival and apoptosis...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28562289/prevention-and-treatment-of-tympanostomy-tube-otorrhea-a-meta-analysis
#14
REVIEW
Dale W Steele, Gaelen P Adam, Mengyang Di, Christopher W Halladay, Ethan M Balk, Thomas A Trikalinos
CONTEXT: Children with tympanostomy tubes often develop ear discharge. OBJECTIVE: Synthesize evidence about the need for water precautions (ear plugs or swimming avoidance) and effectiveness of topical versus oral antibiotic treatment of otorrhea in children with tympanostomy tubes. DATA SOURCES: Searches in Medline, the Cochrane Central Trials Registry and Cochrane Database of Systematic Reviews, Excerpta Medica Database, and the Cumulative Index to Nursing and Allied Health Literature...
May 5, 2017: Pediatrics
https://www.readbyqxmd.com/read/28560854/pharmacogenetic-analysis-of-irreversible-severe-cisplatin-induced-nephropathy-a-case-report-of-a-27-year-old-woman
#15
Corine de Jong, Stefan Sanders, Geert-Jan Creemers, Artur M Burylo, Margot Taks, Jan H M Schellens, Maarten J Deenen
In this report we describe a young patient diagnosed with bulky FIGO stage IIIb squamous cell cervix carcinoma with severe and irreversible nephropathy after three weekly low-doses of cisplatin. Besides several known risk factors such as hypomagnesemia and hypoalbuminemia, the patient also proved to be homozygously polymorphic for two polymorphisms within the COMT gene (c.615 + 310C>T and c.616-367C>T). As COMT polymorphism has been associated with cisplatin-induced ototoxicity, its effect on nephrotoxicity of cisplatin should be the subject of further investigation...
May 31, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28560451/foxo3a-plays-a-key-role-in-the-protective-effects-of-pomegranate-peel-extract-against-amikacin-induced-ototoxicity
#16
Shuangyue Liu, Xiao Zhang, Meiling Sun, Tao Xu, Aimei Wang
The use of amikacin (AMK) in present treatment strategies results in severe ototoxicity; however, the underlying molecular mechanisms of this toxicity remain unclear. In this study, we investigated the effectiveness of orally administered pomegranate peel extract (PPE), a strong antioxidant, as a protective agent against AMK-induced ototoxicity. To this end, PPE was orally administered to adult BALB/c mice for 5 days, and the mice were then concurrently treated with AMK (500 mg/kg/day for 15 consecutive days)...
May 26, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28541783/cyclosporine-causes-no-hearing-defect-in-paediatric-patients-with-nephrotic-syndrome
#17
Belde Kasap-Demir, Derya Özmen, Günay Kırkım, Ersoy Doğan, Alper Soylu, Bülent Şerbetçioğlu, Salih Kavukçu
OBJECTIVE: We aimed to evaluate the ototoxicity of cyclosporine A (CsA) in children with nephrotic syndrome (NS). DESIGN: Data of paediatric patients with NS followed in paediatric nephrology department were evaluated retrospectively, and hearing functions were evaluated by pure tone audiometry (PTA) and transient evoked otoacoustic emissions (TEOAEs). Age, gender, type of NS, duration and cumulative doses of immunosuppressives were noted. STUDY SAMPLE: The patients who had received CsA (n: 16) and immunosuppressives other than CsA (n: 13) for at least 6 months formed two patient groups and healthy cases formed a control group (n: 20)...
May 25, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28537102/cisplatin-induced-metabolome-changes-in-serum-an-experimental-approach-to-identify-markers-for-ototoxicity
#18
Pernilla Videhult Pierre, Jakob Haglöf, Birgitta Linder, Mikael K R Engskog, Torbjörn Arvidsson, Curt Pettersson, Anette Fransson, Göran Laurell
BACKGROUND: Ototoxicity from treatment with the anticancer drug cisplatin remains a clinical problem. A wide range of intracellular targets of cisplatin has been found in vivo. AIM: To investigate cisplatin-induced change of the serum metabolite profile and its association with ototoxicity. MATERIAL AND METHODS: Guinea pigs (n = 14) were treated with cisplatin (8 mg/kg b.w., i.v.) 30 min after administration of the otoprotector candidate sodium thiosulfate (group STS; n = 7) or sodium chloride (group NaCl; n = 7)...
May 24, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28526588/adam10-and-%C3%AE-secretase-regulate-sensory-regeneration-in-the-avian-vestibular-organs
#19
Mark E Warchol, Jennifer Stone, Matthew Barton, Jeffrey Ku, Rose Veile, Nicolas Daudet, Michael Lovett
The loss of sensory hair cells from the inner ear is a leading cause of hearing and balance disorders. The mammalian ear has a very limited ability to replace lost hair cells, but the inner ears of non-mammalian vertebrates can spontaneously regenerate hair cells after injury. Prior studies have shown that replacement hair cells are derived from epithelial supporting cells and that the differentiation of new hair cells is regulated by the Notch signaling pathway. The present study examined molecular influences on regeneration in the avian utricle, which has a particularly robust regenerative ability...
May 17, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28520533/a-fully-automated-high-throughput-zebrafish-behavioral-ototoxicity-assay
#20
Douglas W Todd, Rohit C Philip, Maki Niihori, Ryan A Ringle, Kelsey R Coyle, Sobia F Zehri, Jordan A Mudery, Ross H Francis, Jeffrey J Rodriguez, Abraham Jacob
Zebrafish animal models lend themselves to behavioral assays that can facilitate rapid screening of ototoxic, otoprotective, and otoregenerative drugs. Structurally similar to human inner ear hair cells, the mechanosensory hair cells on their lateral line allow the zebrafish to sense water flow and orient head-to-current in a behavior called rheotaxis. This rheotaxis behavior deteriorates in a dose-dependent manner with increased exposure to the ototoxin cisplatin, thereby establishing itself as an excellent biomarker for anatomic damage to lateral line hair cells...
May 18, 2017: Zebrafish
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