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Effect of chronic stress on cell division in the corneal and tongue epithelium

, : Effect of chronic stress on cell division in the corneal and tongue epithelium. Byulleten' Eksperimental'noi Biologii i Meditsiny 97(1): 93-94

Chronic stress was simulated by daily 1.5-h cooling of rats to C for 28 and 35 days. Stress development was marked by the decreased animals' weight, the reduction in the thymus weight, increase in the adrenal weight and lowered epinephrine content in the adrenals. Chronic stress resulted in a high level of pathological mitoses in the cornea. All series of experiments demonstrated DNA synthesis activation detectable by autoradiography. There were 3 variants of mitotic activity: the 1st one was characterized by scissors between high DNA synthesis and low mitotic activity, the 2nd one by high DNA synthesis attended by mitotic activity normalization, and the 3rd variant was marked by agreement between high DNA synthesis and high mitotic activity. A possible reason for the scissors between DNA synthesis and mitotic activity is discussed.


Other references

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Gunawardena, I.; Baxter, M.; Rasekh, Y., 2011: Bisphosphonate-related subtrochanteric femoral fractures. Hip fractures are important because they are associated with an increased rate of death, substantial morbidity, enormous costs, and devastating effects on independence and quality of life. Bisphosphonates have proven efficacy in reducing the incid...

Gutte P., 1992: The origin of genera from the high andean region of central peru attempt at a floral analysis. The origin of the flora of the high Andean Region of Central Peru is analysed on generic level. The following floristic-geographical groups are distinguished: andean, tropic-subtropical, holarctical, austral-antarctical and cosmopolitan genera. No...

de Schoulepnikoff, L.; Mitev, V.; Simeonov, V.; Calpini, B.; van den Bergh, H., 1997: Experimental investigation of high-power single-pass Raman shifters in the ultraviolet with Nd:YAG and KrF lasers. Single-pass Raman cells pumped by either a quadrupled Nd:YAG (266-nm) laser or a KrF excimer laser are studied. The Raman-active gases comprise H(2), D(2), or CH(4), as well as a mixture of them, with the addition of He, Ne, or Ar. A parametric st...

Gadducci A.; Ferdeghini M.; Prontera C.; Moretti L.; Bianchi R.; Fioretti P., 1990: Ca125 ca199 ca724 ca195 and tati in the management of patients with mucinous ovarian malignancies. Journal of Tumor Marker Oncology 5(3): 221

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Talati, J.J., 2012: The training of a 'stone doctor'. To propose alternative models of training for doctors treating patients with stones, and to identify their relative value, as such doctors are trained through urology programmes which sometimes cannot be expanded to meet the need, are short of tea...

Figoli, N.S.; Barberis, J.P.; L'argentiere, P.C., 1996: Selective hydrogenation of cyclopentadiene over supported metal catalysts. The selective hydrogenation of cyclopentadiene to cyclopentene has been studied in the liquid phase using Pd and Pd-Me/Al-2O-3 bimetallic catalysts (Me = Mn, Ni, Co, W). The highest activity was obtained with Pd-Co and Pd-W/Al-2O-3. For these cata...

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