Evaluation of five elements in lenses and aqueous humour of experimental rabbits after induced opacity.
We evaluated the presence of Ca, Na, K, Cu and Zn in the lenses and aqueous humour of rabbits treated with an Nd:YAG laser to induce opacity of the crystalline. The mean concentrations of the elements found in control lenses were: Ca: 15.8+/-5.2 mg/kg; Na: 1.2+/-0.6 g/kg; K: 10.3+/-3.3 g/kg; Cu: 0.19+/-0.06 mg/kg; Zn: 20.6+/-3.0 mg/kg. With the exception of K and Zn, the values found in the lenses of treated eyes (Ca: 135+/-24 mg/kg; Na: 4.3+/-1.5 g/kg; K: 10.1 +/- 3.2 g/kg; Cu: 0.47+/-0.17 mg/kg; Zn: 21.8+/-4.2 mg/kg) were significantly higher than in the controls. On the other hand, the concentrations found in the aqueous humour of treated eyes (Ca: 21.7+/-4.5 mg/l; Na: 0.66+/-0.21 g/l; K: 0.29+/-0.10 g/l; Cu: 0.035+/-0.009 mg/l; Zn: 0.079+/-0.01 mg/l) were significantly lower than those of the controls. The greatest difference was observed for Na (-68.6%) and Cu (-52.7%), followed by Ca and Zn (-35.0% and -35.2%, respectively). A positive correlation was found between Ca and Na in treated lenses (r2 = 0.9226, p < 0.0001) whereas inverse correlations were found for both Ca (r2 = 0.9788, p<0.0001) and Na (r2 = 0.9491, p<0.0001) between the concentrations found in the lenses and in the aqueous humour of treated eyes.
Cruciani
Filippo
F
II Div. Oculistica, Institute of Ophthalmology, University La Sapienza, Viale del Policlinico, 1, Rome, Italy.
Moramarco
Antonietta
A
Antonelli
Barbara
B
Mollo
Roberto
R
Balacco-Gabrieli
Corrado
C
Costantini
Sergio
S
Ciaralli
Laura
L
Giordano
Rosa
R
Sepe
Alessandra
A
Damore
Emanuela
E
Valeri
Mauro
M
D000818:Animals; D001082:Aqueous Humor / Q000737:chemistry*; D002118:Calcium / Q000032:analysis; D002386:Cataract / Q000209:etiology / Q000378:metabolism*; D002412:Cations / Q000032:analysis*; D003300:Copper / Q000032:analysis; D004195:Disease Models, Animal; D007834:Lasers; D007908:Lens, Crystalline / Q000737:chemistry*; D008297:Male; D011188:Potassium / Q000032:analysis; D011817:Rabbits; D012964:Sodium / Q000032:analysis; D013054:Spectrophotometry, Atomic; D015032:Zinc / Q000032:analysis
D002412:Cations; D003300:Copper; D012964:Sodium; D015032:Zinc; D011188:Potassium; D002118:Calcium