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Minamata-Table-02


Table 4

Chronographical onset of Minamata disease


Year Congenital Infant Adult Total
1953 1 1
1954 5 7 12
1955 5 2 8 15
1956 7 21 23 51
1957 6 2 8
1958 2 3 5
1959 3 1 16 20
1960 4 4

Total 23 30 63 116


Table 5

Mercury contents (ppm) in the hair of the patient of congenital Minamata disease and of their mothers


No. Birth date Patient Mother
1959-61 1963 1966 1960-61 1961-63

1 1956 7 59.0 12.0 3.56 72.9 6.0
2 1957 2 34.3 6.0 9.0 65.4 8.0
3 1957 5 61.9 39.0 14.0 101.0
4 1957 5 4.0 5.0
5 1956 4 51.8 18.0 5.0
6 1956 5 57.8 191.0 32.0
7 1957 10 37.7 54.0 3.5
8 1956 7 26.2 7.0 9.35 4.4
9 1958 9 35.0
10 1958 11 5.25 1.0 6.5 2.0
11 1955 8 11.3 12.0 12.7
12 1956 4 8.14 7.0 2.5 1.8
13 1956 6 10.6
14 1955 11 100.0 90.0
15 1955 8 73.5 19.0 5.79 16.0
16 1956 12 14.9 13.0 10.1 7.03 10.0
17 1955 1 6.0 4.0 5.1
19 1957 8 29.0 32.0*
22 1959 9 28.0 0.0

Note:
1. Cases 6 and 7 were sisters.
2. * measured in 1963.


Table 6

Comparison in pathology of Minamata disease among the congenital, non-fetal, and adult cases (Takeuchi, 1968)


Pathological features Congenital Infantile Adult

1 Cortical disturbance of cerebrum +++ +++ +++
2 Cerebellar disturbance of granular cell type +++ +++ +++
3 Central type of granular atropy + ++ ++
4 Intense reduction of brain +++ +++~++ +
5 Wide distribution of lesions +++ +++ +
6 Preferential localization of lesions ± ++ +++
7 Degree of the granular cell disturbance + +++ +++
8 Hypoplastic change of cytoarchitecture* +++ - -
9 Malformation of neurons +++ - -

*: remaining matrix cells, evidence of nerve cells in cerebral medulla, abnormal cytoarchitecture (columnar block, etc.), hypoplastic narrowing of granular layer in cerebellum, and hypoplastic corpus callosum

 


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Latest update 2002-12-05

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