EVALUATION OF GLUTATHIONE, TOTAL ANTIOXIDANT CAPACITY, TOTAL PLASMA PEROXIDES, OXIDATIVE STRESS INDEX IN CATARACT PATIENTS IN CALABAR

ISONG, IDONGESIT KOKOABASI; AKPAN, UWEM OKON; BASSEY, IYA EZE; ANA, AUGUSTA; OFEM, NTONGHA; EMMANUEL KINGSLEY JOHN; ISONG EKPENYONG

EVALUATION OF GLUTATHIONE, TOTAL ANTIOXIDANT CAPACITY, TOTAL PLASMA PEROXIDES, OXIDATIVE STRESS INDEX IN CATARACT PATIENTS IN CALABAR

ISONG, IDONGESIT KOKOABASI

AKPAN, UWEM OKON

BASSEY, IYA EZE

ANA, AUGUSTA

OFEM, NTONGHA

EMMANUEL KINGSLEY JOHN

ISONG EKPENYONG

Asian Journal of Advances in Medical Science, Volume 4, Issue 4, Page 87-95

Published: 8 November 2022

Abstract

Introduction: Cataract with prevalence of 15.4% is the leading cause of blindness among blinding eye diseases. The cause of cataracts is not fully understood and may be multifactorial, however oxidative damage to the lens proteins and lipids is suggested to be involved in the development of cataracts. This study aimed to determine the serum levels of glutathione (GSH), Total Antioxidant Capacity (TAC), Total Plasma Peroxides (TPP) and Oxidative Stress Index (OSI) in cataract patients in Calabar.

Materials and Methods: One hundred and seventeen subjects which comprise 75 diagnosed cataract patients and 42 controls were recruited. The cataract patients were sub-divided based on WHO criteria as: No visual impairment (n = 25), visually impaired (n = 25) and blind (n = 25). GSH, TAC and TPP were determined using verified colorimetric methods while OSI was calculated. Anthropometric indices, blood pressure and sociodemographic information were obtained using standard methods. Data were analyzed using Student’s t-test, analysis of variance (ANOVA), LSD post hoc and Pearson’s correlation at P < .05.

Results: The TPP and OSI were significantly higher while GSH and TAC were significantly lower (P < .05) in cataract patients compared to the control subjects. GSH and TAC were significantly lower (P < .05) in cataract patients with blindness and visually impaired compared to those without visual impairment. Oxidative stress index correlated negatively with TAC (r = -0.607, P < .05) and positively with diastolic blood pressure (r = 0.296, P = .01) in cataract patients.

Conclusion: It can be concluded that increased oxidative stress may be associated with the formation of cataracts and further depletion of GSH and TAC may cause the progression of cataracts to blindness.

Keywords:

Cataract
glutathione
oxidative stress
antioxidants

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How to Cite

KOKOABASI, I. I., OKON, A. U., EZE, B. I., AUGUSTA, A., NTONGHA, O., JOHN, E. K., & EKPENYONG, I. (2022). EVALUATION OF GLUTATHIONE, TOTAL ANTIOXIDANT CAPACITY, TOTAL PLASMA PEROXIDES, OXIDATIVE STRESS INDEX IN CATARACT PATIENTS IN CALABAR. Asian Journal of Advances in Medical Science, 4(4), 87-95. Retrieved from https://www.mbimph.com/index.php/AJOAIMS/article/view/3211

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