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Original ArticleOpen Access
Potassium, Sodium and Magnesium Contents in Skeletal Muscle of Renal Stone-Formers: A Study in an Area of Low Potassium Intake
Bovornpadungkitti S 
,
Sriboonlue P ,
Prasongwatana V ,
Suwantrai S ,
Predanon C ,
Tosukhowong P ,
Suntarapa S
,
Sriboonlue P ,
Prasongwatana V ,
Suwantrai S ,
Predanon C ,
Tosukhowong P ,
Suntarapa S Skeletal muscles surgically obtained from the stone-former group (external oblique muscle;
n
=
202, 82 males
&
120 females), control group I (external oblique muscle; n
=
5, all males), con-
trol group II (rectus abdominis muscle; n
=
23, all females) and control group III (quadriceps
femoris muscle; n
=
11, all males) were analyzed for potassium (K), sodium (Na) and magnesium
(Mg) contents. Muscle samples were digested with 65 per cent HN0
3
and determined for K, Na
and Mg by an atomic absorption spectrophotometer. The results of analysis showed the mean K.
Na and Mg (เธ‘S.D.) contents in 11mol per one gram of fresh tissue of the stone-former group.
control groups I, II and III were 73.5เธ‘16.6, 51.3เธ‘13.4 and 6.6เธ‘1.3, 77.5เธ‘3.9, 43.9เธ‘9.9 and 7.2เธ‘0.5.
83.8เธ‘27.5, 49.4เธ‘24.1 and 6.7เธ‘1.8 and 85.0เธ‘17.1, 48.5เธ‘12.1 and 6.8เธ‘1.3. Among these variables,
only the K content of control group III was higher significantly (p
n
=
202, 82 males
&
120 females), control group I (external oblique muscle; n
=
5, all males), con-
trol group II (rectus abdominis muscle; n
=
23, all females) and control group III (quadriceps
femoris muscle; n
=
11, all males) were analyzed for potassium (K), sodium (Na) and magnesium
(Mg) contents. Muscle samples were digested with 65 per cent HN0
3
and determined for K, Na
and Mg by an atomic absorption spectrophotometer. The results of analysis showed the mean K.
Na and Mg (เธ‘S.D.) contents in 11mol per one gram of fresh tissue of the stone-former group.
control groups I, II and III were 73.5เธ‘16.6, 51.3เธ‘13.4 and 6.6เธ‘1.3, 77.5เธ‘3.9, 43.9เธ‘9.9 and 7.2เธ‘0.5.
83.8เธ‘27.5, 49.4เธ‘24.1 and 6.7เธ‘1.8 and 85.0เธ‘17.1, 48.5เธ‘12.1 and 6.8เธ‘1.3. Among these variables,
only the K content of control group III was higher significantly (p
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