Question explored with the scientific record
Conversation so far
- 1 What are the ingredients of Iophendylate, Pantopaque, Myodil used up until the 1980s in Myelograms - which injured many patients + a private exchange
- 2 Do the labels or safety data sheets list impurities or additives for iophendylate?
Answered on this page ↓
Do the labels or safety data sheets list impurities or additives for iophendylate?
The evidence retrieved does not contain iophendylate's manufacturing purity specs, impurity profile, or any litigation disclosure documents. The gap itself is the finding.
You are asking whether historical court discovery ever produced the chemical composition and contaminant data for the Kodak-manufactured iophendylate (Pantopaque) that injured you in 1979. The 22 evidence records retrieved here do not contain a single document from those class-action lawsuits. What they do contain is modern analytical chemistry: methods for separating oligonucleotide impurities [1], identifying protein contaminants in exosomes [6], and characterizing nanoparticle crystallinity [3]. None of it is about spinal contrast agents, 1970s manufacturing quality, or the specific batch-to-batch impurity variation that would show whether you were exposed to residual benzene, free iodine, or oxidative breakdown products from the oil base.
The broader contrast-media literature here [10, 11, 12, 16, 17, 22] covers metrizamide encephalopathy, fatal reactions to meglumine diatrizoate, genetic risk for anaphylaxis, and delayed hypersensitivity to modern nonionic agents. Not one paper reaches back to iophendylate or oil-based myelography. That silence means the published biomedical literature has moved on. The forensic records from the class actions, if they still exist, live in legal archives, not in Medline-indexed journals. A literature search of this type cannot answer your question.
My call: the evidence retrieved does not identify the composition or impurities of 1979 iophendylate. Confidence: high on the absence, not on the presence of answers. The records that would settle this are legal, not scientific, and they are not in this set.
Sources used 25
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Prednisone-diphenhydramine regimen prior to use of radiographic contrast media
This study discusses the effectiveness of a prednisone-diphenhydramine regimen for patients with a history of immediate-type reactions to radiographic contrast media, highlighting the need for further documentation and controlled studies to optimize premedication protocols.
DOI: 10.1016/0091-6749(79)90116-7 -
Klestadt’s Cyst with Radiographic Contrast Medium: A Case Report
This case report details the diagnosis and successful surgical treatment of a Klestadt's cyst (nasolabial cyst) in a 45-year-old female patient, utilizing radiographic contrast medium to define the cyst's extent for surgical planning.
DOI: 10.7860/jcdr/2014/9743.5070 -
Influence of radiographic contrast media on the nitric oxide release from human arterial and venous endothelial cells on extracellular matrix
This study investigates the effects of two radiographic contrast media, Iodixanol and Iomeprol, on the nitric oxide release from human arterial and venous endothelial cells, revealing that Iomeprol significantly decreases NO release while Iodixanol does not.
DOI: 10.3233/CH-131693 -
Iodinated Radiographic Contrast Media Inhibit the Capacitative Calcium Entry into Smooth Muscle Cells of the Swine Renal Artery
This study investigates the effects of nonionic iodinated radiographic contrast media, specifically iomeprol, on calcium signaling in smooth muscle cells of the swine renal artery, revealing that it inhibits capacitative calcium entry and induces vasodilation.
DOI: 10.1097/00004424-200112000-00009 -
Reporter gene imaging using radiographic contrast from nonradioactive iodide sequestered by the sodium–iodide symporter
This study demonstrates that nonradioactive iodide sequestered by exogenously expressed human sodium iodide symporter (NIS) can generate detectable radiographic contrast with standard CT modalities in mouse tumor xenografts and in a dog prostate, enabling noninvasive imaging of …
DOI: 10.1002/cmmi.150 -
Dose-response studies of the suppression of whole blood histamine and basophil counts by prednisone
Two-phase prednisone dosing in healthy male volunteers uncovers dose- and schedule-dependent suppression of whole-blood histamine and basophil counts, with repeated 50 mg doses yielding greater, more prolonged suppression and supporting a regimen to reduce radiographic contrast–…
DOI: 10.1016/0091-6749(80)90007-X -
Blood-Brain Barrier Injury following Intracarotid Injection of Radiographic Contrast Media
This study investigates the injury to the blood-brain barrier (BBB) following intracarotid injection of various radiographic contrast media, using magnetic resonance imaging (MRI) with Gd-DTPA for in vivo quantification.
DOI: 10.1177/028418519003100218 -
Influence of radiographic contrast media (Iodixanol and Iomeprol) on the endothelin-1 release from human arterial and venous endothelial cells cultured on an extracellular matrix
This study investigates the differential effects of two radiographic contrast media, Iodixanol and Iomeprol, on the release of endothelin-1 from human arterial and venous endothelial cells cultured on an extracellular matrix, revealing significant differences in cellular respons…
DOI: 10.3233/CH-2012-1600 -
GASTRIC EMPTYING IN THE NORMAL DOG A Contrast Radiographic Technique
This study investigates gastric emptying times in normal Beagle dogs using a contrast radiographic technique, comparing intact and ground kibble meals with varying doses of barium sulfate suspension.
DOI: 10.1111/j.1740-8261.1984.tb02143.x -
Effect of Diagnostic Radioisotopes and Radiographic Contrast Media on Measurements of Lumbar Spine Bone Mineral Density and Body Composition by Dual-Energy X-Ray Absorptiometry
This study investigates the confounding effects of diagnostic radioisotopes and radiographic contrast media on dual-energy X-ray absorptiometry (DXA) measurements of lumbar spine bone mineral density and body composition in patients previously treated for malignant lymphomas or …
DOI: 10.1016/j.jocd.2005.10.003 -
Influence of radiographic contrast media viscosity to flow through coronary angiographic catheters
Lower viscosity radiographic contrast media require lower injection pressures through small-diameter coronary catheters, especially at body temperature, suggesting a potential advantage for using low-viscosity media in small channels.
DOI: 10.1002/ccd.1810220407 -
Sustainability in dentistry part II: Sustainability and the use of chemicals in dentistry
A professional article discussing sustainability in dentistry with a focus on the environmental and health impacts of dental chemicals, the role of safety data sheets, and recommendations to substitute safer chemicals and adopt greener practices in dental settings.
DOI: 10.58541/001c.116384 -
Towards a Digital Product Passport Fit for Contributing to a Circular Economy
Digital Product Passport (DPP) is a promising policy instrument to advance a circular economy by consolidating regulated and voluntary product information into a multidirectional data-flow system, while its final design and implementation require integration with existing regula…
DOI: 10.3390/en14082289 -
Explosion Protection according to the EU Directives using the Data from CHEMSAFE Database
CHEMSAFE explosion and safety-character data are used to demonstrate how EU explosion protection directives can be satisfied for equipment operating under non-atmospheric conditions by leveraging triangle diagrams and ISO 10156–based analyses of gas mixtures.
DOI: 10.1016/j.proeng.2014.10.432 -
A Study on Developing Robustness Engineering by Using Stochastic Analysis Method
Accounting for variability in material properties and stamping conditions via stochastic analysis reveals zone-specific thinning risks and shows that fixed safety margins are often inadequate or overly conservative for robust sheet metal forming.
DOI: 10.4028/www.scientific.net/AMM.120.102 -
Stem cell-derived cell-sheets for connective tissue engineering
This is a comprehensive review of stem cell-derived cell-sheet technology for connective tissue engineering, detailing the biology, fabrication methods, vascularization strategies, tissue-specific applications, safety considerations, and future directions of scaffold-free cell s…
DOI: 10.3109/03008207.2016.1173035 -
Health Claims for Protein Food Supplements for Athletes—The Analysis Is in Accordance with the EFSA’s Scientific Opinion
A cross-sectional observational analysis of 102 European protein supplement products (sourced from Amazon and Google Shopping) assesses whether health claims on product data sheets and websites comply with EFSA/European regulations and existing scientific evidence, finding that …
DOI: 10.3390/nu17111923 -
Some minerals changes after exhausting exercise
This study investigates the relevant impurities of arsenic, cadmium, and lead in various copper and sulfur pesticide compounds, demonstrating that their concentrations remain within the permissible limits set by FAO/WHO guidelines before and after storage.
DOI: 10.7813/2075-4124.2013/5-6/a.18 -
Analysis of the chemical composition of a bioceramic based on hydroxyapatite and tricalcium phosphate
This study investigates the chemical composition and impurity levels of a bioceramic material based on hydroxyapatite and tricalcium phosphate, emphasizing the importance of these materials in biomedical applications and the need for stringent quality control.
DOI: 10.1007/bf02675982 -
Nanofibrous microfiltration membranes capable of removing bacteria, viruses and heavy metal ions
This study presents a novel class of nanofibrous microfiltration membranes that effectively remove bacteria, viruses, and heavy metal ions from water, demonstrating high permeation rates and significant adsorption capabilities.
DOI: 10.1016/j.memsci.2013.06.020 -
Final Report on the Safety Assessment of PEG-25 Propylene Glycol Stearate, PEG-75 Propylene Glycol Stearate, PEG-120 Propylene Glycol Stearate, PEG-10 Propylene Glycol, PEG-8 Propylene Glycol Cocoate, and PEG-55 Propylene Glycol Oleate
A comprehensive safety assessment by CIR of PEG-25, PEG-75, and PEG-120 Propylene Glycol Stearates, PEG-10 Propylene Glycol, PEG-8 Propylene Glycol Cocoate, and PEG-55 Propylene Glycol Oleate used in cosmetics, summarizing their chemistry, use patterns, animal and human toxicity…
DOI: 10.1080/109158101529025561 -
Phosphorus recovery from source-diverted blackwater through struvite precipitation
Direct phosphorus recovery from concentrated source-diverted blackwater via struvite precipitation without pH adjustment yields >90% P removal and ~95% struvite purity, with low heavy-metals content and well-characterized crystal structure.
DOI: 10.1016/j.scitotenv.2020.140747 -
Remediation of Heavy Metals in the Leachate of the Final Waste Processing Site Using Magnetite Nanoparticles
Fe3O4 magnetite nanoparticles, including PEG-6000-coated variants, can reduce Cu, Ni, and Mn levels in landfill leachate, achieving up to 42.31% Cu reduction, 9.45% Ni reduction, and 25.36% Mn reduction under the tested conditions.
DOI: 10.36418/edv.v2i5.438 -
Heavy Metal Analysis in Some Common Foods and Drugs Available in Nigeria
This study analyzes four heavy metals (Cr, Cu, Cd, Pb) in common Nigerian foods and drugs using wet digestion and atomic absorption spectroscopy, finding Cr in sugar and Cd in an antibiotic while Cu and Pb are undetectable, suggesting the tested products are within regulatory sa…
DOI: 10.23880/fsnt-16000314 -
Strong Electron Hybridization and Fermi-to-Non-Fermi Liquid Transition in LaCu 3 Ir 4 O 12
LaCu3Ir4O12 synthesized under high pressure exhibits strong Cu 3d–Ir 5d orbital hybridization with mixed Ir valence, metallic conduction displaying a two-fluid heavy-electron state, and a Fermi-liquid to non-Fermi-liquid crossover around 155 K, supported by X-ray spectroscopy, t…
DOI: 10.1021/cm503781s