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Goals of this Presentation . Define MycotoxinsAflatoxins Ochratoxins Trichothecenes Others (Ergots, Etc). Show Structures of mycotoxins Discuss malignancy and mycotoxins . Explain the testing of the mycotoxins and validations of the testing in a laboratory setting. Explain findings to da
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1. HIDDEN TRUTHS OF MYCOTOXINS
Dennis Hooper, MD, PhD, CEO, Medical Director
RealTime Laboratories, LLC
13016 Bee Street, Suite 203
Dallas, Texas 75234
Phone: 972-243-7754
Fax: 972-243-7759
mscmd@cox.net
www.realtimelab.com
2. Goals of this Presentation Define Mycotoxins
Aflatoxins
Ochratoxins
Trichothecenes
Others (Ergots, Etc).
Show Structures of mycotoxins
Discuss malignancy and mycotoxins
Explain the testing of the mycotoxins and validations of the testing in a laboratory setting.
Explain findings to date in specimens submitted for clinical testing (body fluids and tumors).
3. Dilemma Is there a correlation between mycotoxins and malignancies?
Is there a causation between mycotoxins and malignancies?
4. Mycotoxins Low molecular weight (small molecules)
Usually produced as secondary metabolites by filamentous fungi
300-400 compounds are recognized as mycotoxins
10-12 receive attention as human threats
Most literature attributes mycotoxicosis to ingestion of contaminated foods but airborne contamination is a problem as well
5. MYCOTOXICITY
PATIENTS ARE EXPOSED THROUGH INHALATION AS WELL AS INGESTION.
IS THERE A CORRELATION/CAUSATION BETWEEN INHALATION OF FUNGAL SPORES AND MYCOTOXINS AND MYCOTOXICOSIS/MALIGNANCY?
6. Mycotoxicoses Acute
Rapid onset
Obvious Toxic response
Chronic
Low dose exposure over long period of time
Results in cancers, chronic illnesses, and systemic, irreversible effects (James, 1985, Gen Prin of Toxicology)
8. BUT ??? Can we measure mycotoxins in Human Fluids and Tissues?
9. Yes, We Can
10. Human Health Burden Related to chronic exposure; even though the best known mycotoxin episodes are manifestations of acute effects (human ergotism, stachybotryotoxicosis).
Cancer induction
Kidney toxicity
Immune supression
11. Aspergillus niger (Aflatoxin)
12. Aflatoxins 4 major ones:
B1, B2, G1, G2
B1 is most potent natural carcinogen known
Produced by
Aspergillus flavus,
Asp. parasiticus,
Others
Liver is the primary target organ; however, also found in lung and brain.
13. Aflatoxin Action Cytochrome P450 enzymes convert aflatoxins to the reactive 8,9-epoxide form
Binds to DNA and proteins at the N7 position of guanines
Aflatoxin B1-DNA adducts result in GC to TA transversions
If there is a reactive glutathione S-transferase system found in the cytosol and microsomes- then there can be a conjugation of activated aflatoxins with reduced GSH leading to the excretion of aflatoxin
14. Exposure in diet is an important risk factor for primary Hepatocellular carcinoma.
Aflatoxin B1-N7-guanine adduct represents the most reliable urinary biomarker for recent exposure
Inactivation of p53 tumor suppressor gene may be important step in carcinogenesis
AFLATOXIN B1 - Human Carcinogen
15. Biosynthesis and Molecular Biology During the metabolism of aflatoxins, there are many toxic metabolites formed.
The mycotoxin: Sterigomatocystin is carcinogenic. Produced by
Asp. versicolor
Asp. nidulans
Asp. parasiticus
Asp. flavus
Asp. oryze and
Asp. sojae, both in soy sauce and sake fermentation
16. Penicillium Species
17. Ochratoxin A From Asp. ochraceus,
Asp. niger
Penicillium verrucosum
Found in grains, coffee beans, and some wines
Kidney is the primary target organ
18. Ochratoxin A Nephrotoxic
Humans have the longest half-life for its elimination of any of the species studied
Hepatoxic
Immune suppressant
Potent teratogen
Carcinogen Disturbs cellular physiology in multiple ways:
Inhibiting synthesis of phenylalanine-tRNA complex
Inhibits mitochondrial ATP production
Stimulates lipid peroxidation
19. Ochratoxin A Diseases: (Not strong evidence molecularly, but epidemiological):
Endemic Balkan nephropathy with increased number of bladder tumors.
May be a risk factor for testicular cancer
Can be carried through the food chain (recommended levels in food intake: 5 ng/kg of body weight/day)
Recommendations:
pay close attention to patients with symptoms of:
Renal pathology
Immunosuppression
THINK MYCOTOXINS!!
20. Stachybotrys (Trichothecenes)
21. Trichothecenes Many metabolites produced by:
Fusarium
Stachybotrys
Trichoderma
Commonly found in food
22. Potent inhibitors of protein synthesis
Some interfere with initiation, others elongation, and others termination stages of protein synthesis.
They all inhibit peptidyl transferase by binding to the same ribosome binding site
Deoxynivalenol (DON) and T-2 are best studied
Cause nausea, vomiting weight loss
DON is less toxic yet most prevalent
Trichothecenes
23. Symptoms similar to anguidine (a simple trichothecene diacetoxyscirpenal)
Injected into humans in the 1970s as a chemotherapeutic agent.
Symptoms experienced by patients in that study are also similar to the symptoms experienced by those individuals in trichothecene infested buildings. Trichothecenes
24. Ergot Alkaloids Most fascinating of all
Lysergic acid, structure common to all ergots
Produced from Claviseps sp.
St. Anthonys Fire.
Two clinical forms:
Gangrenous
Convulsive
25. ErgotaminesClinical symptoms Gangrene
Abortion
Convulsions
Suppression of lactation
Hypersensitivity
Ataxia
Induce Smooth muscle contractions; thus, abortion can occur and accelerates uterine contractions in labor.
26. Fumonosins
Associated with human esophageal cancer
27. Case Studies
28. 38 y.o. male, exposed to Stachybotrys chartarum, Aspergillus niger, and Penicillium sp. (verified by Environmental studies) in workplace.
Developed extensive skin lesions and sinusitis with asthma.
Positive for Lyme Disease (By antibody titration).
Pathology DX: Skin Biopsy: Pathology Bx: Psoriasiform Spongiotic Dermatitis.
DNA by RT-PCR, Skin Biopsy: Stachybotrys chartarum, Aspergillus niger.
Positive for Aflatoxin 4 ppb, Negative for Trichothecenes (macrocyclics).
Results: Antifungal given; Itraconazole and Voraconazole.
Lesions improved.
Skin Lesions
29. 2 y.o. male, with history of mold exposure in home from birth.
Began having seizures at six weeks old. Also, family Labrador had seizures.
Environmental studies of home showed high levels of Aspergillus, Penicillium, and Stachybotrys.
Mycotoxin analysis urine: Trichothecenes: 1.5 ppb; Aflatoxins, 0 ppb,Ochratoxins, 0 ppb.
Began treatment of Cholestyramine, and Glutathione. Also was believed to have Epilepsy. Began on Dilantin.
One month after treatment began, urine levels of mycotoxins showed 1.5 Trichothecenes, 5 ppb Aflatoxins, and 0 ppb Ochratoxins.
Results: While on reducing agents, seizure free. Medical consensus was that the patient was epileptic. Removed him off of reducing agents.
Seizures increased.
Now carries autistic diagnosis.
Continuing to have seizures.
NEUROLOGICAL DISORDERS
30. Management of Mycotoxin Positive Myoclonus in Canine Canine 1 year old , relentless progression of myoclonus severe enough to consider euthanasia
Urine (+): aflatoxin, trichothecene and ochratoxin
Culture from walls: Stachybotrys chatarum, and Aspergillus
Management: Moved from exposure site
Resolved after ReadiSorb Glutathione, an oral liposomal encapsulation of glutathione.
31. 6 y.o. female with astrocytoma (Grade I/II)
Aflatoxin found in urine and brain biopsy
48 y.o. male with low grade glioma
Aspergillus versicolor by RT-PCR
Aflatoxin found at 2 ppb. In CSF and in urine
Started on Voraconazole; patient showed mild improvement.
Discontinued Voraconazole for chemotherapy and radiation treatments
Patient expired
Autopsy showed Grade 1 Astrocytoma
21 y.o. with brain inflammation by CT and by biopsy
Aflatoxin and Ochratoxin A present
Aspergillus and Penicillium present by RT-PCR
BRAIN LESIONS (TUMORS)
32. Pulmonary Fibrosis
Astrocytomas
Meduloblastomas
Ependymomas
Muscle biopsies from ALS patients, MS patients
Endometrial Tissue
Breast tissue and tumors
Skin
CSF Types of Patients/Specimens Tested
33. Medulloblastoma Cellular medulloblastoma Aflatoxin present
Trichothecenes present
Patient exposed to
Aspergillus sp.
Penicillium sp.
Stachybotrys sp.
34. Astrocytoma 13 Biopsies submitted
by pathologists
Aflatoxin Positive
Ochratoxin Positive
7 tumors
5/7 tumors showed one or both mycotoxins
6 biopsies gliosis or
chronic inflammation
4/6 showed one or both mycotoxins
35. BREAST TUMORS 3 Breast Tumors submitted
1 Lymph node (Sentinel node)
All positive for Ochratoxin A
Urine
Tissue Comedo Tumor
Intraductal
Medullary
36. Amyotrophic lateral sclerosis(ALS) 1 patient, muscle biopsy
Positive for Aflatoxin in tissue and urine Lou Gehrig Note: Patient was NOT
Lou Gehrig !!!!
37. LUNG TUMORS Mesothelioma
Ochratoxin found in chest wall, diaphragm.
No ochratoxin found in pleura
Urine not sampled.
Adenocarcinoma, Large Cell
Aflatoxin Positive
38. Renal Cell Carcinomas
All positive for Ochratoxin A
4/4 Tumors in urine and tumor
39. Uterus Tissues (Benign, atypical lesions) 5 samples received
5/5 had Aflatoxin present in tissue and urine
2/5 had Ochratoxin present in tissue and urine
1/5 had Trichothecenes present in tissue and urine Samples were atypical endometrial tissue showing different stages of endometrial atypia.
40. Esthesioneuroblastoma 1 tumor submitted
Aflatoxin and Ochratoxin A in urine and tissue
Various pathology labs throughout the U.S. called:
Chronic inflammation
Pituitary adenoma Patient is continued to be followed.
Finding of mycotoxin has led to controversial discussions concerning diagnosis.
Being submitted for publication.
41. SUMMARY
RealTime Laboratory LLC, can measure mycotoxin by ELISA and DNA by RealTime Polymerase Chain Reaction in body fluids and tissue.
There appears to be a link between toxin presence and malignancy presence.
Consider using liposomal glutathione (Readisorb)
WHATEVER THE CASE:
ERROR ON THE SIDE OF SAFETY, BELIEVE THAT MOLDS CAN BE TOXIC, DONT EXCLUDE CAUSATION FOR MALIGNANT LESIONS.