Abstract
The west plain region of Jilin province of northeast China is one of the typical endemic fluorosis areas caused by drinking water for many years. Investigations of hydrogeological and ecoenvironmental conditions as well as endemic fluorosis were conducted in 1998. Results show that the ground water, especially, the water in the unconfined aquifer is the main source of drinking water for local residents. The fluoride concentration in groundwater in the unconfined aquifers is higher than that in the confined aquifer in the west plain of Jilin province. The fluoride concentration in the unconfined aquifer can be used to classify the plain into fluoride deficient area, optimum area and excess area, which trend from west to east. High fluoride (>1.0 mg L(-1)) in drinking water resulted in dental and skeletal fluorosis in local residents (children and pregnant women). There exists a positive correlation between fluoride concentration in the drinking water and the morbidities of endemic fluorosis disease (r1 = 0.781, r2 = 0.872). Health risks associated with fluoride concentration in drinking water are assessed. It has been determined that fluoride concentration in excess of 1.0 mg L(-1) exposes residents to high health risks based on risk identification. The study area is classified into five health risk classes as shown in Figure 4. The risk indexes of this area more than 1.0 are accounted for 68% of the total west plain region.
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Quantification of rib COL1A2 gene expression in healthy and fluorosed Inner Mongolia cashmere goats.
Damage to collagen protein and its gene expression caused by excessive fluoride (F) ingestion plays an important role in the etiology of skeletal fluorosis. Recently we found that industrial F pollution significantly increased the expression level of type II collagen gene (COL2A1) in rib cartilage of Inner Mongolia cashmere goats. With the same goats and
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Endemic genu valgum and other bone deformities in two villages of Mandla district in central India
An epidemiological investigation was undertaken in the villages of Tilaipani and Hirapur located in Mandla District of Central India to determine the cause and extent of a peculiar skeletal deformity characterised by knock knee (genu valgum) occurring mainly among children. In Tilaipani, 74.4% of children and adolescents below age 20
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[Dermatoglyphic indices in assessing the predisposition to occupational fluorosis].
Dermatoglyphic investigations which prove the existence of genetic predisposition to occupational fluorosis in workers of aluminum and criolite plants were carried out. Mathematical methods of pattern recognition were used for the multifactorial analysis. It was found that the complex analysis of ten the most informative dermatoglyphic parameters permits to prognosticate
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Skeletal fluorosis among Indians of the American Southwest
Presented are 20 cases of Southwestern American Indians having characteristic sclerotic bone changes caused by the ingestion of drinking water containing excessively great quantities of fluoride salts. The changes of skeletal fluorosis are described, and it is pointed out that the degree of change does not seem to correlate well
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Back pain in chronic renal failure.
Article w/o Photos (see pdf attached) Patient SK, a 40-yr-old female, resident of Bhagalpur village in Bihar, India, was operated for gallstones 3 years previously. On pre-operative checkup, mild renal dysfunction was detected. She was asymptomatic for renal disease with serum creatinine of 159 mmol/l (1.8mg/dl), bland urinary sediment and small echo-genic kidneys on ultrasound. She was
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Fluoride & Osteoarthritis
While the osteoarthritic effects that occurred from fluoride exposure were once considered to be limited to those with skeletal fluorosis, recent research shows that fluoride can cause osteoarthritis in the absence of traditionally defined fluorosis. Conventional methods used for detecting skeletal fluorosis, therefore, will fail to detect the full range of people suffering from fluoride-induced osteoarthritis.
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"Pre-Skeletal" Fluorosis
As demonstrated by the studies below, skeletal fluorosis may produce adverse symptoms, including arthritic pains, clinical osteoarthritis, gastrointestinal disturbances, and bone fragility, before the classic bone change of fluorosis (i.e., osteosclerosis in the spine and pelvis) is detectable by x-ray. Relying on x-rays, therefore, to diagnosis skeletal fluorosis will invariably fail to protect those individuals who are suffering from the pre-skeletal phase of the disease. Moreover, some individuals with clinical skeletal fluorosis will not develop an increase in bone density, let alone osteosclerosis, of the spine. Thus, relying on unusual increases in spinal bone density will under-detect the rate of skeletal fluoride poisoning in a population.
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Skeletal Fluorosis: The Misdiagnosis Problem
It is a virtual certainty that there are individuals in the general population unknowingly suffering from some form of skeletal fluorosis as a result of a doctor's failure to consider fluoride as a cause of their symptoms. Proof that this is the case can be found in the following case reports of skeletal fluorosis written by doctors in the U.S. and other western countries. As can be seen, a consistent feature of these reports is that fluorosis patients--even those with crippling skeletal fluorosis--are misdiagnosed for years by multiple teams of doctors who routinely fail to consider fluoride as a possible cause of their disease.
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Fluoride & Arthritis
The doses that American adults now routinely ingest overlap the doses that may cause chronic joint pain.
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Estimated "Threshold" Doses for Skeletal Fluorosis
For over 40 years health authorities stated that in order to develop crippling skeletal fluorosis, one would need to ingest between 20 and 80 mg of fluoride per day for at least 10 or 20 years. This belief, however, which played an instrumental role in shaping current fluoride policies, is now acknowledged by the National Academy of Sciences (NAS) and other US health authorities to be incorrect.
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