Natalia I. Dmitrieva

Rapid activation of G2/M checkpoint after hypertonic stress in renal inner medullary epithelial (IME) cells is protective and requires p38 kinase

Dmitrieva, Natalia I., Bulavin, Dmitry V., Fornace, Albert J., Burg, Maurice B.

Cells in the kidney medulla are subject to variable and often extreme osmotic stress during concentration of the urine. Previous studies showed that renal inner medullary epithelial (IME) cells...

Cells adapted to high NaCl have many DNA breaks and impaired DNA repair both in cell culture and in vivo

Dmitrieva, Natalia I., Cai, Qi, Burg, Maurice B.

Acute exposure of cells in culture to high NaCl damages DNA and impairs its repair. However, after several hours of cell cycle arrest, cells multiply in the hypertonic medium. Here, we show that,...

Cell Cycle-dependent Expression of Thyroid Hormone Receptor-β Is a Mechanism for Variable Hormone SensitivityD⃞

Maruvada, Padma, Dmitrieva, Natalia I., East-Palmer, Joyce, Yen, Paul M.

Thyroid hormone receptors (TRs) are ligand-regulatable transcription factors. Currently, little is known about the expression of TRs or other nuclear hormone receptors during the cell cycle. We thus...

High urea and NaCl carbonylate proteins in renal cells in culture and in vivo, and high urea causes 8-oxoguanine lesions in their DNA

Zhang, Zheng, Dmitrieva, Natalia I., Park, Jong-Hwan, Levine, Rodney L., Burg, Maurice B.

Urea and NaCl are elevated in the renal inner medulla. We now find that a high concentration of urea or NaCl increases reactive oxygen species (ROS) in mouse renal inner medullary (mIMCD3) cells in...

Pax2 expression occurs in renal medullary epithelial cells in vivo and in cell culture, is osmoregulated, and promotes osmotic tolerance

Cai, Qi, Dmitrieva, Natalia I., Ferraris, Joan D., Brooks, Heddwen L., Burg, Maurice

Pax2 is a transcription factor that is crucial for kidney development, and it is also expressed in the normal adult kidney, where its physiological function is unknown. In the present study, we find...

Ku86 preserves chromatin integrity in cells adapted to high NaCl

Dmitrieva, Natalia I., Celeste, Arkady, Nussenzweig, André, Burg, Maurice B.

Cells adapted to high NaCl have many DNA breaks both in cell culture and in the renal inner medulla in vivo; yet they survive, function, and even proliferate. Here, we show that Ku86 is important for...

Rapid activation of G2/M checkpoint after hypertonic stress in renal inner medullary epithelial (IME) cells is protective and requires p38 kinase

Dmitrieva, Natalia I., Bulavin, Dmitry V., Fornace, Albert J., Burg, Maurice B.

Cells in the kidney medulla are subject to variable and often extreme osmotic stress during concentration of the urine. Previous studies showed that renal inner medullary epithelial (IME) cells...

Cells adapted to high NaCl have many DNA breaks and impaired DNA repair both in cell culture and in vivo

Dmitrieva, Natalia I., Cai, Qi, Burg, Maurice B.

Acute exposure of cells in culture to high NaCl damages DNA and impairs its repair. However, after several hours of cell cycle arrest, cells multiply in the hypertonic medium. Here, we show that,...

Cell Cycle-dependent Expression of Thyroid Hormone Receptor-β Is a Mechanism for Variable Hormone SensitivityD⃞

Maruvada, Padma, Dmitrieva, Natalia I., East-Palmer, Joyce, Yen, Paul M.

Thyroid hormone receptors (TRs) are ligand-regulatable transcription factors. Currently, little is known about the expression of TRs or other nuclear hormone receptors during the cell cycle. We thus...

High urea and NaCl carbonylate proteins in renal cells in culture and in vivo, and high urea causes 8-oxoguanine lesions in their DNA

Zhang, Zheng, Dmitrieva, Natalia I., Park, Jong-Hwan, Levine, Rodney L., Burg, Maurice B.

Urea and NaCl are elevated in the renal inner medulla. We now find that a high concentration of urea or NaCl increases reactive oxygen species (ROS) in mouse renal inner medullary (mIMCD3) cells in...

Pax2 expression occurs in renal medullary epithelial cells in vivo and in cell culture, is osmoregulated, and promotes osmotic tolerance

Cai, Qi, Dmitrieva, Natalia I., Ferraris, Joan D., Brooks, Heddwen L., Burg, Maurice

Pax2 is a transcription factor that is crucial for kidney development, and it is also expressed in the normal adult kidney, where its physiological function is unknown. In the present study, we find...

Ku86 preserves chromatin integrity in cells adapted to high NaCl

Dmitrieva, Natalia I., Celeste, Arkady, Nussenzweig, André, Burg, Maurice B.

Cells adapted to high NaCl have many DNA breaks both in cell culture and in the renal inner medulla in vivo; yet they survive, function, and even proliferate. Here, we show that Ku86 is important for...

MKP-1 inhibits high NaCl-induced activation of p38 but does not inhibit the activation of TonEBP/OREBP: Opposite roles of p38α and p38δ

Zhou, Xiaoming, Ferraris, Joan D., Dmitrieva, Natalia I., Liu, Yusen, Burg, Maurice B.

High NaCl rapidly activates p38 MAPK by phosphorylating it, the phosphorylation presumably being regulated by a balance of kinases and phosphatases. Kinases are known, but the phosphatases are...