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Ranftler C, Zehentner M, Pengl A, Röhrich A, Tschegg C, Nagl D. Purified Clinoptilolite-Tuff as an Efficient Sorbent for Food-Derived Peanut Allergens. Int J Mol Sci 2024; 25:6510. [PMID: 38928222 PMCID: PMC11203878 DOI: 10.3390/ijms25126510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/29/2024] [Accepted: 05/30/2024] [Indexed: 06/28/2024] Open
Abstract
The avoidance of allergen intake is crucial for persons affected by peanut allergy; however, the cross-contamination of food is common and leads to unpredictable consequences after the consumption of supposedly "safe" food. The aim of the present study was to eliminate harmful traces of peanut allergens from food using purified clinoptilolite-tuff (PCT)-a specially processed zeolite material. Analyses were performed using a peanut ELISA and a Coomassie blue (Bradford) assay. Mimicking conditions of the human gastrointestinal tract demonstrated a higher efficacy of PCT in the intestine (pH 6.8) than in the stomach (pH 1.5). Adsorption rates were fast (<2 min) and indicated high capacities (23 µg and 40 µg per 1 mg of PCT at pH 1.5 and pH 6.8, respectively). Allergenically relevant peanut protein concentrations were sorbed in artificial fluids (32 µg/mL by 4 mg/mL of PCT at pH 1.5 and 80.8 µg/mL by 0.25 mg/mL of PCT at pH 6.8) when imitating a daily dose of 2 g of PCT in an average stomach volume of 500 mL. Experiments focusing on the bioavailability of peanut protein attached to PCT revealed sustained sorption at pH 1.5 and only minor desorption at pH 6.8. Accompanied by gluten, peanut proteins showed competing binding characteristics with PCT. This study therefore demonstrates the potential of PCT in binding relevant quantities of peanut allergens during the digestion of peanut-contaminated food.
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Affiliation(s)
| | | | | | | | | | - Dietmar Nagl
- GLOCK Health, Science and Research GmbH, Hausfeldstrasse 17, 2232 Deutsch-Wagram, Austria; (C.R.); (M.Z.); (A.P.); (A.R.); (C.T.)
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Nizet S, Rieger J, Sarabi A, Lajtai G, Zatloukal K, Tschegg C. Binding and inactivation of human coronaviruses, including SARS-CoV-2, onto purified clinoptilolite-tuff. Sci Rep 2023; 13:4673. [PMID: 36949092 PMCID: PMC10031168 DOI: 10.1038/s41598-023-31744-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 03/16/2023] [Indexed: 03/24/2023] Open
Abstract
The current COVID19 pandemic is caused by a positive-sense single-stranded RNA virus, which presents high mutational rates. The development of effective therapeutics and mitigation strategies using vaccination or therapeutic antibodies faces serious challenges because of the regular emergence of immune escape variants of the virus. An efficient approach would involve the use of an agent to non-specifically limit or block viruses contacting the mucosae and therefore entering the body. Here, we investigated the ability of a micronized purified clinoptilolite-tuff to bind and neutralize different viruses from the Coronaviridae family. Using plaque assay, RT-qPCR and immunostaining, the adsorption and inactivation of the seasonal human coronavirus HCoV-229E and of 2 SARS-CoV-2 variants were demonstrated. The resulting data suggest that purified clinoptilolite-tuff could be used as an ingredient in new medical devices and/or pharmaceuticals to prevent or mitigate SARS-CoV-2 dissemination.
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Affiliation(s)
- S Nizet
- Glock Health, Science and Research GmbH, Hausfeldstrasse 17, 2232, Deutsch-Wagram, Austria.
| | - J Rieger
- Diagnostic and Research Institute of Pathology, Medical University Graz, Neue Stiftingtalstrasse 6, 8010, Graz, Austria
| | - A Sarabi
- Glock Health, Science and Research GmbH, Hausfeldstrasse 17, 2232, Deutsch-Wagram, Austria
| | | | - K Zatloukal
- Diagnostic and Research Institute of Pathology, Medical University Graz, Neue Stiftingtalstrasse 6, 8010, Graz, Austria
| | - C Tschegg
- Glock Health, Science and Research GmbH, Hausfeldstrasse 17, 2232, Deutsch-Wagram, Austria
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Irrgeher J, Berger T, Tchaikovsky A, Tschegg C, Gouya G, Lechner P, Retzmann A, Opper C, Firbas C, Freissmuth M, Peschel-Credner K, Anderle K, Meisslitzer C, Wolzt M, Prohaska T. Enriched stable 204Pb as tracer at ultra-low levels in clinical investigations. Anal Bioanal Chem 2023; 415:255-268. [PMID: 36136113 PMCID: PMC9823027 DOI: 10.1007/s00216-022-04311-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 08/23/2022] [Accepted: 08/29/2022] [Indexed: 01/11/2023]
Abstract
The potential of enriched Pb (204Pb) was assessed to monitor pathways of trace levels of Pb in the pg range within the human body via isotope pattern variation in situations where natural lead cannot be used as a tracer due to regulatory limitations. Isotope ratio measurements were accomplished by means of (multi-collector) inductively coupled plasma mass spectrometry including a comparison of single and multi-collector ICP-MS for low-level 204Pb assessment. Isotopic pattern results from a blend of a large quantity of the element with a natural isotopic composition and an enriched stable isotope at orders of magnitude lower levels pose a nontrivial analytical problem. Isotope pattern deconvolution was successfully applied as mathematical tool based on multiple linear regressions. The method allowed for deconvolving the isotope pattern from measured isotope ratios without knowing the quantities of different isotope sources incorporated and mixed into the sample at levels of < 1 pg 204Pb/g blood. The objective of this manuscript is to evaluate and summarize the analytical aspects for Pb isotope pattern deconvolution based on the results of a clinical trial, where a 204Pb-enriched isotope tracer was applied to investigate the bioavailability of orally applied Pb along with purified clinoptilolite tuff as potential supplement. This unique approach allows to reduce tracer amounts to harmless levels to human health, which are in accordance with the legal regulative to study enrichment levels of < 0.01% in human blood.
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Affiliation(s)
- Johanna Irrgeher
- Department of General, Analytical and Physical Chemistry, Montanuniversität Leoben, Franz-Josef-Straße 18, 8700 Leoben, Austria
| | - Thomas Berger
- Glock Health Science and Research GmbH, Hausfeldstraße 17, 2232 Deutsch-Wagram, Austria
| | | | - Cornelius Tschegg
- Glock Health Science and Research GmbH, Hausfeldstraße 17, 2232 Deutsch-Wagram, Austria
| | - Ghazaleh Gouya
- Gouya Insights, Elisabethstrasse 22/12, 1010 Vienna, Austria
| | - Peter Lechner
- LGS-INSIGHTS GmbH, Elisabethstrasse 22/12, 1010 Vienna, Austria
| | - Anika Retzmann
- Department of General, Analytical and Physical Chemistry, Montanuniversität Leoben, Franz-Josef-Straße 18, 8700 Leoben, Austria
| | - Christine Opper
- Department of General, Analytical and Physical Chemistry, Montanuniversität Leoben, Franz-Josef-Straße 18, 8700 Leoben, Austria ,TB Unterfrauner GmbH, Umseerstraße 39, 3040 Neulengbach, Austria
| | - Christa Firbas
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
| | - Michael Freissmuth
- Institute of Pharmacology and the Gaston H. Glock Research Laboratories for Exploratory Drug Development, Center of Physiology and Pharmacology, Medical University of Vienna, Währingerstrasse 13a, Vienna, Austria
| | | | - Karolina Anderle
- Institute of Pharmacology and the Gaston H. Glock Research Laboratories for Exploratory Drug Development, Center of Physiology and Pharmacology, Medical University of Vienna, Währingerstrasse 13a, Vienna, Austria
| | - Claudia Meisslitzer
- Glock Health Science and Research GmbH, Hausfeldstraße 17, 2232 Deutsch-Wagram, Austria
| | - Michael Wolzt
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
| | - Thomas Prohaska
- Department of General, Analytical and Physical Chemistry, Montanuniversität Leoben, Franz-Josef-Straße 18, 8700 Leoben, Austria
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Çelikbaş İ, Mavi E, Hepokur C. The evaluation of the effects of natural zeolite (Clinoptilolite) in diabetic rats on bone healing in dental extracting socket. J Oral Biol Craniofac Res 2023; 13:36-40. [DOI: 10.1016/j.jobcr.2022.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/16/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022] Open
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Anderle K, Wolzt M, Moser G, Keip B, Peter J, Meisslitzer C, Gouya G, Freissmuth M, Tschegg C. Safety and efficacy of purified clinoptilolite-tuff treatment in patients with irritable bowel syndrome with diarrhea: Randomized controlled trial. World J Gastroenterol 2022; 28:6573-6588. [PMID: 36569277 PMCID: PMC9782844 DOI: 10.3748/wjg.v28.i46.6573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/09/2022] [Accepted: 11/16/2022] [Indexed: 12/08/2022] Open
Abstract
BACKGROUND Irritable bowel syndrome (IBS) is a highly prevalent gastrointestinal disorder with poor response to treatment. IBS with predominant diarrhea (IBS-D) is accompanied by abdominal pain as well as high stool frequency and urgency. Purified clinoptilolite-tuff (PCT), which is approved by the Food and Drug Administration for use as a dietary supplement with the brand name G-PUR®, has previously shown therapeutic potential in other indications based on its physical adsorption capacity.
AIM To assess whether symptoms of IBS-D can be ameliorated by oral treatment with PCT.
METHODS In this randomized, placebo-controlled, double-blind pilot study, 30 patients with IBS-D diagnosis based on Rome IV criteria were enrolled. Following a 4-wk run-in phase, 14 patients were randomized to receive a 12-wk treatment with G-PUR® (2 g three times daily), and 16 patients received placebo. The relief from IBS-D symptoms as measured by the proportion of responders according to the Subject’s Global Assessment (SGA) of Relief was assessed as the primary outcome. For the secondary outcomes, validated IBS-D associated symptom questionnaires, exploratory biomarkers and microbiome data were collected.
RESULTS The proportions of SGA of Relief responders after 12 wk were comparable in both groups, namely 21% in the G-PUR® group and 25% in the placebo group. After 4 wk of treatment, 36% of patients in the G-PUR® group vs 0% in the placebo group reported complete or considerable relief. An improvement in daily abdominal pain was noted in 94% vs 83% (P = 0.0353), and the median number of days with diarrhea per week decreased by 2.4 d vs 0.3 d in the G-PUR® and placebo groups, respectively. Positive trends were observed for 50% of responders in the Bristol Stool Form Scale. Positive trends were also noted for combined abdominal pain and stool consistency response and the Perceived Stress Questionnaire score. Only 64% in the G-PUR® group compared to 86% in the placebo group required rescue medication intake during the study. Stool microbiome studies showed a minor increase in diversity in the G-PUR® group but not in the placebo group. No PCT-related serious adverse events were reported.
CONCLUSION In this randomized, double-blind, placebo-controlled study, the PCT product, G-PUR®, demonstrated safety and clinical benefit towards some symptoms of IBS-D, representing a promising novel treatment option for these patients.
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Affiliation(s)
- Karolina Anderle
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna 1090, Austria
| | - Michael Wolzt
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna 1090, Austria
| | - Gabriele Moser
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna 1090, Austria
| | - Bettina Keip
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna 1090, Austria
| | - Johannes Peter
- Department of Internal Medicine III, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna 1090, Austria
| | - Claudia Meisslitzer
- Glock Health, Science and Research GmbH, Deutsch-Wagram 2232, Lower Austria, Austria
| | | | - Michael Freissmuth
- Institute of Pharmacology and the Gaston H. Glock Research Laboratories for Exploratory Drug Development, Center of Physiology and Pharmacology, Medical University of Vienna, Vienna 1090, Austria
| | - Cornelius Tschegg
- Glock Health, Science and Research GmbH, Deutsch-Wagram 2232, Lower Austria, Austria
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Purified Clinoptilolite-Tuff as an Efficient Sorbent for Gluten Derived from Food. Int J Mol Sci 2022; 23:ijms23095143. [PMID: 35563533 PMCID: PMC9101028 DOI: 10.3390/ijms23095143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 04/29/2022] [Accepted: 05/02/2022] [Indexed: 12/21/2022] Open
Abstract
Various gluten-related diseases (celiac disease, wheat allergy, gluten sensitivity) are known and their incidence is growing. Gluten is a specific type of plant storage protein that can impair the health of gluten-prone persons following consumption, depending on the origin. The most severe effects are induced by wheat, barley, and rye. The only treatment is based on the absolute avoidance of those foods, as even traces might have severe effects on human well-being. With the goal of binding gluten impurities after ingestion, an in vitro setting was created. A special processed kind of zeolite, purified clinoptilolite-tuff (PCT), was implemented as an adsorber of gluten derived from different origins. Zeolites are known for their excellent sorption capacities and their applications in humans and animals have been studied for a long time. Tests were also performed in artificial gastric and intestinal fluids, and the adsorption capacity was determined via a certified validated method (ELISA). Depending on the kind of gluten source, 80–130 µg/mg of gluten were bound onto PCT. Hence, purified clinoptilolite-tuff, which was successfully tested for wheat, barley, and rye, proved to be suitable for the adsorption of gluten originating from different kinds of crops. This result might form the basis for an expedient human study in the future.
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Deinsberger J, Marquart E, Nizet S, Meisslitzer C, Tschegg C, Uspenska K, Gouya G, Niederdöckl J, Freissmuth M, Wolzt M, Weber B. Topically administered purified clinoptilolite-tuff for the treatment of cutaneous wounds: a prospective, randomized phase I clinical trial. Wound Repair Regen 2022; 30:198-209. [PMID: 35043507 PMCID: PMC9306511 DOI: 10.1111/wrr.12991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/17/2021] [Accepted: 01/01/2022] [Indexed: 12/20/2022]
Abstract
In an ageing society, chronic ulcers pose an increasingly relevant healthcare issue associated with significant morbidity and an increasing financial burden. Hence, there is an unmet medical need for novel, cost‐effective therapies that improve healing of chronic cutaneous wounds. This prospective, randomised, open‐label, phase I trial investigated the safety and tolerability of topically administered purified clinoptilolite‐tuff (PCT), mainly consisting of the naturally occurring zeolite‐mineral clinoptilolite, in artificial wounds in healthy male volunteers compared to the standard of care (SoC). We found that topically administered PCT was safe for therapeutic application in acute wounds in healthy male volunteers. No significant differences in wound healing or wound conditions were observed compared to SoC‐treated wounds. However, we found a significantly higher proportion of CD68‐positive cells and a significantly lower proportion of α‐smooth muscle actin‐positive cells in PCT‐treated wounds. Scanning electron microscopy revealed PCT particles in the restored dermis in some cases. However, these did not impede wound healing or clinical symptoms. Hence, purified PCT could represent an attractive, cost‐effective wound treatment promoting the process of healing.
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Affiliation(s)
- Julia Deinsberger
- Department of Dermatology, Vienna General Hospital, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Elias Marquart
- Department of Dermatology, Vienna General Hospital, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Stephane Nizet
- Glock Health, Science and Research GmbH, Hausfeldstraße 17, 2232, Deutsch-Wagram, Austria
| | - Claudia Meisslitzer
- Glock Health, Science and Research GmbH, Hausfeldstraße 17, 2232, Deutsch-Wagram, Austria
| | - Cornelius Tschegg
- Glock Health, Science and Research GmbH, Hausfeldstraße 17, 2232, Deutsch-Wagram, Austria
| | | | - Ghazaleh Gouya
- Gouya-Insights, Elisabethstraße 22/12, 1010, Vienna, Austria
| | - Jan Niederdöckl
- Department of Clinical Pharmacology, Vienna General Hospital, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Michael Freissmuth
- Center for Physiology and Pharmacology, Institute of Pharmacology, Gaston H. Glock Laboratories for Exploratory Drug Research, Medical University of Vienna, Waehringer Straße 13a, 1090, Vienna, Austria
| | - Michael Wolzt
- Department of Clinical Pharmacology, Vienna General Hospital, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Benedikt Weber
- Department of Dermatology, Vienna General Hospital, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
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Adsorption and Release Characteristics of Purified and Non-Purified Clinoptilolite Tuffs towards Health-Relevant Heavy Metals. CRYSTALS 2021. [DOI: 10.3390/cryst11111343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The occurrence of health-relevant contaminants in water has become a severe global problem. For treating heavy-metal-polluted water, the use of zeolite materials has been extended over the last decades, due to their excellent features of high ion exchange capacity and absorbency. The aim of this study was to assess the effect of heavy metal uptake of one purified (PCT) and two non-purified clinoptilolite tuffs (NPCT1 and NPCT2) in aqueous solutions on monovalent ions Ni+, Cd+, Cs+, Ba+, Tl+, and Pb+. Experiments were furthermore carried out in artificial gastric and intestinal fluids to mimic human digestion and compare removal efficiencies of the adsorbent materials as well as release characteristics in synthetic gastric (SGF) and intestinal fluids (SIF). Batch experiments show low sorption capacities for Ni+ and Cd+ for all studied materials; highest affinities were found for Ba+ (99–100%), Pb+ (98–100%), Cs+ (97–98%), and Tl+ (96%), depending on the experimental setup for the PCT. For the adsorption experiments with SGF, highest adsorption was observed for the PCT for Pb+, with an uptake of 99% of the lead content. During artificial digestion, it was proven that the PCT did not release Ba+ cations into solution, whereas 13,574 ng·g−1 and 4839 ng·g−1 of Ba+ were measured in the solutions with NPCT1 and NPCT2, respectively. It was demonstrated that the purified clinoptilolite tuff is most effective in remediating heavy-metal-polluted water, particularly during artificial digestion (99% of Pb+, 95% of Tl+, 93% of Ba+). In addition, it was shown that the released amount of bound heavy metal ions (e.g., barium) from the non-purified clinoptilolite tuffs into the intestinal fluids was significantly higher compared to the purified product.
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