CLINICAL AND BIOCHEMICAL ALTERATIONS IN PATIENTS WITH VITAMIN B12 AND FOLATE DEFICIENCY ANEMIAS RESIDING IN ANDIJAN CITY

R.Z. Umurzaqova

Associate Professor, PhD

M.Sh. Asqarova

Master’s Student, 1st Year, Laboratory Work) Department of Hospital Therapy and Endocrinology, Andijan State Medical Institute, Andijan, Uzbekistan. Annotation

##semicolon## Megaloblastic anemia, Vitamin B12 deficiency, Folate deficiency, Macrocytosis, Homocysteine, Lactate dehydrogenase, Ineffective erythropoiesis.


सार

Megaloblastic anemias, driven by Vitamin B12 and folate deficiencies, present unique clinical and biochemical challenges, heavily influenced by regional dietary habits and gastrointestinal pathologies. This study characterizes these specific alterations in the urban population of Andijan. A cross-sectional study was conducted involving 80 patients (aged 18-65) diagnosed with megaloblastic anemia and 30 healthy controls. Comprehensive laboratory panels including complete blood count (CBC), serum B12, folate, lactate dehydrogenase (LDH), and homocysteine were analyzed. Patients exhibited significant macrocytosis (MCV 112 ± 5.4 fL vs. 88 ± 4.2 fL in controls, p < 0.001). Severe biochemical disruptions were noted, particularly elevated LDH (845 ± 120 U/L vs. 180 ± 25 U/L, p < 0.001) and hyperhomocysteinemia (24.5 ± 3.2 µmol/L vs. 8.4 ± 1.5 µmol/L, p < 0.01), reflecting ineffective erythropoiesis and metabolic blockades. B12 and folate deficiencies in Andijan lead to profound systemic biochemical shifts beyond simple anemia, including severe hyperhomocysteinemia. Early laboratory differential diagnosis is essential to prevent irreversible neurological and cardiovascular complications.


##submission.citations##

1. Stabler, S. P. (2013). Clinical practice. Vitamin B12 deficiency. New England Journal of Medicine, 368(2), 149-160. DOI: 10.1056/NEJMcp1113996

2. Green, R. (2017). Vitamin B12 deficiency from the perspective of a practicing hematologist. Blood, 129(19), 2603-2611. DOI: 10.1182/blood-2016-10-569186

3. Carmel, R. (2011). Biomarkers of cobalamin (vitamin B-12) status in the epidemiologic setting: a critical overview of context, applications, and performance characteristics of cobalamin, methylmalonic acid, and holotranscobalamin II. The American Journal of Clinical Nutrition, 94(1), 348S-358S. DOI: 10.3945/ajcn.111.013441

4. Devalia, V., Hamilton, M. S., & Dietz, V. C. (2014). Guidelines for the diagnosis and treatment of cobalamin and folate disorders. British Journal of Haematology, 166(4), 496-513. DOI: 10.1111/bjh.12959

5. Hannibal, L., Lysne, V., Bjørke-Monsen, A. L., Behringer, S., Grünert, S. C., Spiekerkoetter, U., ... & Blom, H. J. (2016). Biomarkers and algorithms for the diagnosis of vitamin B12 deficiency. Frontiers in Molecular Biosciences, 3, 27. DOI: 10.3389/fmolb.2016.00027

6. Andrès, E., Affenberger, S., Vinzio, S., Kurtz, J. E., Noel, E., Kaltenbach, G., ... & Schlienger, J. L. (2005). Food-cobalamin malabsorption in elderly patients: clinical manifestations and treatment. The American Journal of Medicine, 118(10), 1154-1159. DOI: 10.1016/j.amjmed.2005.02.026

7. Aslinia, F., Mazza, J. J., & Yale, S. H. (2006). Megaloblastic anemia and other causes of macrocytosis. Clinical Medicine & Research, 4(3), 236-241. DOI: 10.3121/cmr.4.3.236

8. Hunt, A., Harrington, D., & Robinson, S. (2014). Vitamin B12 deficiency. BMJ, 349, g5226. DOI: 10.1136/bmj.g5226

9. Reynolds, E. (2006). Vitamin B12, folic acid, and the nervous system. The Lancet Neurology, 5(11), 949-960. DOI: 10.1016/S1474-4422(06)70598-1

10. Allen, L. H. (2009). How common is vitamin B-12 deficiency?. The American Journal of Clinical Nutrition, 89(2), 693S-696S. DOI: 10.3945/ajcn.2008.26947A