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https://www.readbyqxmd.com/read/29466174/-pharmacological-properties-of-loop-diuretics-and-their-clinical-effects
#1
G Sakalauskienė, G Civinskienė, A Antuševas, P Civinskas
Edematous states caused by an excessesive extracellular fluid retention are major components of cardiovascular and renal disorders including chronic kidney disease, nephrotic syndrome, and heart failure. The use of diuretic drugs from various groups including loop duiretics are important means of pharmacological correction of these clinical conditions. Moreover, diuretics used to lower bood pressure as a part of antihypertensive treatment, reduce cardiovascular events. The response of patients to the dose of a diuretic is reflected by a sigmoid dose-response curve which can be affected by changes of sodium content in the body...
January 2018: Kardiologiia
https://www.readbyqxmd.com/read/29460824/comparison-of-cisplatin-with-lipoplatin-in-terms-of-ototoxicity
#2
Efe Serinan, Zekiye Altun, Safiye Aktaş, Emre Çeçen, Nur Olgun
OBJECTIVE: Cisplatin (CDDP) is an anti-neoplastic agent that has been used in treatments of both pediatric and adult cancers. It has many side effects, such as ototoxicity, nephrotoxicity, and neurotoxicity. Lipoplatin (LIPO) is a nanomolecule with 110 nm diameter and composed of lipids and CDDP. In this study, we aimed to compare the toxic effects of LIPO with CDDP in the cochlear cells with anti-tumoral doses determined in neuroblastoma cells. MATERIALS AND METHODS: House Ear Institute Organ Corti 1 (HEI-OC1), MYC-N amplified KELLY, and MYC-N non-amplified SH-SY5Y human neuroblastoma cells were used in this study...
February 20, 2018: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29458150/pink1-protects-auditory-hair-cells-and-spiral-ganglion-neurons-from-cisplatin-induced-ototoxicity-via-inducing-autophagy-and-inhibiting-jnk-signaling-pathway
#3
Qianqian Yang, Gaoying Sun, Haiyan Yin, Hongrui Li, Zhixin Cao, Jinghan Wang, Meijuan Zhou, Haibo Wang, Jianfeng Li
Phosphatase and tensin homologue (PTEN)-induced putative kinase 1 (PINK1) gene encodes a serine/threonine kinase, which acts as a molecular sensor of mitochondrial health necessary for mitochondrial quality control. The present study was designed to examine whether PINK1 expressed in C57BL/6 murine cochlea and HEI-OC1 cells and, if so, to investigate the possible mechanisms underlying the action of PINK1 in cisplatin-induced death of sensory hair cells (HCs) and spiral ganglion neurons (SGNs) in vitro. The expression pattern of PINK1, formation of parkin particles, and autophagy were determined by immunofluorescent staining...
February 16, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29456958/etiology-of-noise-induced-hearing-loss-nihl-and-its-symptomatic-correlation-with-audiometry-observations-in-type-ii-diabetes
#4
Meena K Yadav, K S Yadav
Type II diabetic mellitus (DM) is a chronic metabolic disease that impairs normal insulin production and glucose transport to the liver and muscles. In the India, about 1-5% population suffer from diabetes or related complication. So there is need to cure this disease. DM chronic auditory complications may include spiral ganglia atrophy, degeneration of the vestibulocochlear nerve myelin sheath, reduction of the number of spiral lamina nerve fibres, and thickening of the capillary walls of the stria vascularis and small arteries...
March 2018: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/29454061/activation-of-nlrx1-mediated-autophagy-accelerates-the-ototoxic-potential-of-cisplatin-in-auditory-cells
#5
Haiyan Yin, Qianqian Yang, Zhixin Cao, Hongrui Li, Zhaoyan Yu, Guodong Zhang, Gaoying Sun, Rongjun Man, Haibo Wang, Jianfeng Li
To date, the mechanism (s) underlying the cisplatin-elicited ototoxicity has not been elucidated fully. Nucleotide-binding domain and leucine-rich-repeat-containing family member ×1 (NLRX1), a cytoplasmic pattern recognition receptor, is tightly related to mitochondrial function, reactive oxygen species (ROS) production, and autophagy. In this work, autophagy alteration, NLRX1 expression, ROS generation and cell injury were investigated correspondingly by immunofluorescence staining, western-blot, TEM, flow cytometry and MTT in HEI-OC1 cells of both NLRX1 overexpression and silencing in response to cisplatin stimulus...
February 14, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29451951/time-course-and-clinical-characterization-of-cisplatin-induced-ototoxicity-after-treatment-for-nasopharyngeal-carcinoma-in-a-south-east-asian-population
#6
Sze Ling Chan, Li Shia Ng, Xueying Goh, Chor Hiang Siow, Han Lee Goh, Boon Cher Goh, Timothy Cheo, Kwok Seng Loh, Liam R Brunham
BACKGROUND: The purpose of this study was to characterize the clinical course of hearing loss in patients with nasopharyngeal carcinoma (NPC) and the clinical factors affecting its severity. METHODS: The time course of hearing loss in patients with NPC was assessed using threshold shift from baseline and Common Terminology Criteria for Adverse Events (CTCAE) grade. RESULTS: In the chemoradiotherapy (CRT) groups, the threshold shift was significantly higher from 3 months at 4 kHz (P = 2...
February 16, 2018: Head & Neck
https://www.readbyqxmd.com/read/29445111/fluvastatin-protects-cochleae-from-damage-by-high-level-noise
#7
Claus-Peter Richter, Hunter Young, Sonja V Richter, Virginia Smith-Bronstein, Stuart R Stock, Xianghui Xiao, Carmen Soriano, Donna S Whitlon
Exposure to noise and ototoxic drugs are responsible for much of the debilitating hearing loss experienced by about 350 million people worldwide. Beyond hearing aids and cochlear implants, there have been no other FDA approved drug interventions established in the clinic that would either protect or reverse the effects of hearing loss. Using Auditory Brainstem Responses (ABR) in a guinea pig model, we demonstrate that fluvastatin, an inhibitor of HMG-CoA reductase, the rate-limiting enzyme of the mevalonate pathway, protects against loss of cochlear function initiated by high intensity noise...
February 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29445029/pantoprazole-an-inhibitor-of-the-organic-cation-transporter-2-does-not-ameliorate-cisplatin-related-ototoxicity-or-nephrotoxicity-in-children-and-adolescents-with-newly-diagnosed-osteosarcoma-treated-with-methotrexate-doxorubicin-and-cisplatin
#8
Elizabeth Fox, Kristin Levin, Yan Zhu, Blair Segers, Naomi Balamuth, Richard Womer, Rochelle Bagatell, Frank Balis
LESSONS LEARNED: Using a randomized crossover design and continuous variables such as change in hearing threshold and biomarkers of acute renal injury as short-term endpoints, it was determined that pantoprazole, an organic cation transporter 2 inhibitor, did not ameliorate cisplatin-associated nephrotoxicity or ototoxicity.Cystatin C is a robust method to estimate glomerular filtration rate in patients with cancer. Using a patient-reported outcome survey, all patients identified tinnitus and subjective hearing loss occurring "at least rarely" after cycle 1, prior to objective high-frequency hearing loss measured by audiograms...
February 14, 2018: Oncologist
https://www.readbyqxmd.com/read/29430414/pattern-and-impact-of-drugs-targeted-toward-toxicity-amelioration-in-patients-receiving-cancer-chemotherapy
#9
Shruti Singh, Prashant Kumar Singh
Background: Drug therapy today is remarkably safe and efficacious. Still, some drugs - particularly anticancer drugs - are fraught with numerous adverse drug reactions (ADRs), severely jeopardizing quality of life of cancer patients. Fortunately, most of these ADRs are preventable provided adequate prophylactic drugs are administered along with chemotherapy. Aims: The aim of this study is to assess the pattern and impact of cytoprotective prophylactic drugs on anticancer ADRs in patients receiving cancer chemotherapy...
January 2018: Perspectives in Clinical Research
https://www.readbyqxmd.com/read/29404977/drug-induced-ototoxicity-diagnosis-and-monitoring
#10
REVIEW
Kathleen C M Campbell, Colleen G Le Prell
Ototoxicity diagnosis and management has historically been approached using a variety of methods. However, in recent years a consensus on useful and practical approaches has been developed through clinical guidelines of the American Speech Language Hearing Association, the American Academy of Audiology, and multiple clinical trials published in peer-reviewed literature. Some of the guidelines and approaches are used to detect and monitor ototoxicity, while others are used to grade adverse events. Some of the audiologic measures are primary, while others are adjunct measures and may be tailored to the specific needs of the patient or clinical trial...
February 6, 2018: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
https://www.readbyqxmd.com/read/29403358/novel-peptide-vaccine-gv1001-rescues-hearing-in-kanamycin-furosemide-treated-mice
#11
Shin Hye Kim, Gaon Jung, Sangjae Kim, Ja-Won Koo
The cell-penetrating peptide GV1001 has been investigated as an anticancer agent and recently demonstrated anti-oxidant and anti-inflammatory effects. It has shown a protective effect on a kanamycin (KM)-induced ototoxicity mouse model. In the present study, we administered GV1001 at different time points after inducing hair cell damage, and examined if it rescues hair cell loss and restores hearing. A deaf mouse model was created by intraperitoneal injection of KM and furosemide. First, to test the early temporal change of hearing and extent of hair cell damage after KM and furosemide injection, hearing and outer hair cells (OHCs) morphology were evaluated on day 1, day 2 and day 3 after injection...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29400111/hearing-loss-prevalence-and-risk-factors-among-older-adults-in-china
#12
Rui Gong, Xiangyang Hu, Chen Gong, Mo Long, Rui Han, Lijun Zhou, Fang Wang, Xiaoying Zheng
OBJECTIVE: This study aims to investigate the prevalence of hearing loss, and to analyse the major demographics and risk factors that influence the prevalence in older adults of China. DESIGN: Cross-sectional investigation. STUDY SAMPLE: Probability proportionate to size sampling (PPS) was adopted for this survey. Among 45,052 individuals, 6984 older adults (≥60 years) were selected as subjects for this study. RESULTS: The prevalence of hearing loss defined as a speech frequency pure tone average of more than 25 dB HL in the better ear was 58...
February 5, 2018: International Journal of Audiology
https://www.readbyqxmd.com/read/29392065/possible-ototoxic-effects-of-topical-rifamycin-application-an-electrophysiological-and-ultrastructural-study
#13
Cihan Abaylı, Yusuf Kul, Muhsin Koten, Ahmet Rıfat Karasalihoğlu, Abdullah Taş, Recep Yağız, Erdoğan Bulut
Objective: This study aimed to investigate possible ototoxicity associated with topical rifamycin application via electrophysiological tests and ultrastructural examinations. Methods: Electrophysiological assessment was performed with tympanometry, auditory brainstem response (ABR), and distortion product otoacoustic emission (DPOAE) measurements. This study was conducted on 40 ears of 20 guinea pigs that were detected to have normal hearing thresholds. The animals were randomly assigned to three groups: Group 1 (n=12) received 0...
September 2017: Turkish archives of otorhinolaryngology
https://www.readbyqxmd.com/read/29383205/efficacy-of-boric-acid-as-a-treatment-of-choice-for-chronic-suppurative-otitis-media-and-its-ototoxicity
#14
REVIEW
Indri Adriztina, Linda Irwani Adenin, Yuliani Mardiati Lubis
Chronic suppurative otitis media (CSOM) is one of the most common chronic infectious diseases worldwide, especially affecting children. The patients or the parents of the affected children are often worried about the cost of medical visits, prescription medicines, or inconsistently effective medication. The complications of CSOM have been greatly reduced because of the development of antibiotics; however, the irrational use of antibiotics has led to the emergence of organisms resistant to the commonly used drugs...
January 2018: Korean Journal of Family Medicine
https://www.readbyqxmd.com/read/29381431/automated-high-throughput-damage-scoring-of-zebrafish-lateral-line-hair-cells-after-ototoxin-exposure
#15
Rohit C Philip, Jeffrey J Rodriguez, Maki Niihori, Ross H Francis, Jordan A Mudery, Justin S Caskey, Elizabeth Krupinski, Abraham Jacob
Zebrafish have emerged as a powerful biological system for drug development against hearing loss. Zebrafish hair cells, contained within neuromasts along the lateral line, can be damaged with exposure to ototoxins, and therefore, pre-exposure to potentially otoprotective compounds can be a means of identifying promising new drug candidates. Unfortunately, anatomical assays of hair cell damage are typically low-throughput and labor intensive, requiring trained experts to manually score hair cell damage in fluorescence or confocal images...
January 30, 2018: Zebrafish
https://www.readbyqxmd.com/read/29380538/determining-the-prevalence-of-vestibular-screening-failures-in-pediatric-cancer-patients-whose-therapies-include-radiation-to-the-head-neck-and-platin-based-therapies-a-pilot-study
#16
Miranda L Camet, Susan S Hayashi, Belinda C Sinks, Jennifer Henry, Katie Gettinger, Ashley Hite, Juliann Kiefer, Caroline Mohrmann, Taryn Sandheinrich, Feng Gao, Robert J Hayashi
BACKGROUND: Sensorineural hearing loss due to ototoxic cancer therapy is well established; effects on the vestibular system are unknown. We examined the feasibility of implementing vestibular screens for pediatric cancer survivors exposed to ototoxic agents. The prevalence of screening failures is reported. METHODS: Cancer survivors who were 6-17 years, at least 1-month posttreatment, and received ototoxic therapy (radiation to the head/neck, cisplatin, carboplatin) were eligible...
January 30, 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29373195/ototoxicity-and-cochlear-sparing-in-children-with-medulloblastoma-proton-vs-photon-radiotherapy
#17
Arnold C Paulino, Anita Mahajan, Rong Ye, David R Grosshans, M Fatih Okcu, Jack Su, Mary Frances McAleer, Susan McGovern, Victor A Mangona, Murali Chintagumpala
PURPOSE: To compare ototoxicity rates between medulloblastoma patients treated with protons vs. photons. MATERIALS AND METHODS: The study included 84 children diagnosed with medulloblastoma treated with either passively scattered protons (n = 38) or photons (n = 46). Patients underwent maximal safe resection followed by craniospinal irradiation, posterior fossa and/or tumor bed boost and chemotherapy according to one of 3 multi-institutional trials. Median audiogram follow-up was 56 months for protons and 66 months for photons...
January 17, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29361217/progress-in-the-development-of-preventative-drugs-for-cisplatin-induced-hearing-loss
#18
Robert A Hazlitt, Jaeki Min, Jian Zuo
Cisplatin is a highly effective treatment for malignant cancers and has become a cornerstone in chemotherapeutic regimens. Unfortunately, its use in the clinic is often coupled with a high incidence of severe hearing loss. Over the past few decades, enormous effort has been put forth to find protective agents that selectively protect against the ototoxic side effects of cisplatin and do not interfere with its antitumoral activity. Many therapies have been successful in preclinical work, but only a few have shown any protection in the clinic, and none have been approved by the FDA...
February 1, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29358504/further-investigation-of-the-role-of-acyp2-and-wfs1-pharmacogenomic-variants-in-the-development-of-cisplatin-induced-ototoxicity-in-testicular-cancer-patients
#19
Britt I Drögemöller, Beth Brooks, Jose G Monzon, Galen Eb Wright, Geoffrey Liu, Daniel J Renouf, Christian Kollmannsberger, Phillipe L Bedard, Michael R Hayden, Karen A Gelmon, Bruce Carleton, Colin Jd Ross
PURPOSE: Adverse drug reactions such as ototoxicity, which occurs in approximately one fifth of adult patients who receive cisplatin treatment, can incur large socio-economic burdens on testicular cancer patients who develop this cancer during early adulthood. Recent genome-wide association studies have identified genetic variants in ACYP2 and WFS1 that are associated with cisplatin-induced ototoxicity. We sought to explore the role of these genetic susceptibility factors to cisplatin-induced ototoxicity in testicular cancer patients...
January 22, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29352609/induction-of-mitophagy-in-the-hei-oc1-auditory-cell-line-and-activation-of-the-atg12-lc3-pathway-in-the-organ-of-corti
#20
Cristian Setz, Anne-Sophie Benischke, Anna Catharina Pinho Ferreira Bento, Yves Brand, Soledad Levano, Franziska Paech, Katharina Leitmeyer, Daniel Bodmer
Autophagy is a highly evolutionary conserved quality control defense mechanism within cells, which has also been implicated in cell death processes. In the mammalian inner ear, autophagy has been shown to play a role during early morphogenesis as well as in adult cochlear hair cells exposed to ototoxic insults. Mitophagy, a selective autophagic cell process targeting mitochondria, hasn't been studied in the inner ear so far. On this work, we searched for molecular indicators of mitophagy within House Ear Institute-Organ of Corti-1 (HEI-OC1) cells as well as in the organ of Corti (OC)...
January 11, 2018: Hearing Research
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