Background. Lead is one of the most osteotropic toxicants: up to 90% of the total body burden is deposited within the bone mineral matrix, where it competitively substitutes for Ca2+ in the hydroxyapatite lattice, suppresses osteoblast differentiation and enhances osteoclastogenesis. A pathogenetically grounded correction scheme for lead-induced bone metabolic disturbances, and its relationship to reparative osteogenesis, remain insufficiently studied. Aim — to experimentally assess biochemical bone metabolism markers and reparative osteogenesis under chronic lead intoxication, and to evaluate the efficacy of combined corrective therapy (vitamin D3 + calcium citrate + succinic acid). Materials and methods. Forty-five rats were allocated to three groups (control, Pb-intoxication, Pb-intoxication + correction). Chronic intoxication was induced by lead acetate administered ad libitum via drinking water for 8 weeks; at week 4 a monocortical femoral defect was created in all animals. Serum biochemical markers and cortical bone lead content (ICP-OES) were assessed. Results. The Pb group showed significantly reduced osteoblastic activity (alkaline phosphatase −39%, osteocalcin −54%), hypocalcemia (−25%) and marked bone lead accumulation (244.1±21.0 µg/g). Corrective therapy reduced bone lead deposition by 62% and produced statistically significant partial recovery of the studied biochemical parameters. Conclusion. Chronic lead intoxication produces a complex osteotoxic syndrome with disturbed biochemical markers of reparative osteogenesis; the proposed corrective regimen is pathogenetically justified and may serve as a basis for further clinical development of osteoprotective protocols.
| Mualliflar | E. Yu. Valiev, D.O. Ergashev, О.Э. Валиев, А.Т. Эрметов, H.A. Tilyakov, N.O. Suvonov |
|---|---|
| Jurnal | Zamonaviy tibbiyot jurnali / Journal of modern medicine |
| Nashr sanasi | 2026-07-15 |
| Jild | 14 |
| Son | 3 |
| Betlar | 227-234 |
| Til | en |
| DOI | 10.67519/nshr.ztj.2026.03.072 |
DOI: 10.67519/nshr.ztj.2026.03.072 · Maqolaning asl sahifasi · PDF
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