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1.
Mol Brain ; 16(1): 79, 2023 Nov 18.
Artículo en Inglés | MEDLINE | ID: mdl-37980537

RESUMEN

Protein kinases are responsible for protein phosphorylation and are involved in important intracellular signal transduction pathways in various cells, including neurons; however, a considerable number of poorly characterized kinases may be involved in neuronal development. Here, we considered mitogen-activated protein kinase kinase kinase kinases (MAP4Ks), related to as candidate regulators of neurite outgrowth and synaptogenesis, by examining the effects of a selective MAP4K inhibitor PF06260933. PF06260933 treatments of the cultured neurons reduced neurite lengths, not the number of synapses, and phosphorylation of GAP43 and JNK, relative to the control. These results suggest that MAP4Ks are physiologically involved in normal neuronal development and that the resultant impaired neurite outgrowth by diminished MAP4Ks' activity, is related to psychiatric disorders.


Asunto(s)
Neuritas , Neuronas , Humanos , Neuronas/metabolismo , Neuritas/metabolismo , Transducción de Señal , Fosforilación , Proyección Neuronal
2.
Int J Surg Case Rep ; 73: 328-331, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32739520

RESUMEN

INTRODUCTION: Giant bladder uric acid stone cases that have more than 4 cm in diameters and weighing more than 100 g are considered rare. PRESENTATION OF CASES: At the end of 2019, two men presented with chronic lower abdominal pain since five years ago. Abdominal radiography found a giant opaque mass inside the bladder. Open suprapubic cystolithotomy was performed by a general surgeon. Both giant bladder stones were extracted and measured approximately 11 × 7 × 6 cm and 500 g in weight. More than 80 % of stone composition was uric acid. Neither of the patients developed severe complications after the procedure. DISCUSSION: Our patients had a history of prolonged sun exposure related to occupation and high protein intake. Benign prostatic hyperplasia as a major underlying cause for stone formation was not found in the digital rectal examination. Prostatectomy was not performed. Uric acid stone is common in Southeast Asia, with a multifactorial pathogenesis. CONCLUSIONS: Open suprapubic cystolithotomy is the best method to extract giant bladder stones in limited settings in the rural areas of Indonesia. It was likely that the most important factors associated with the stone formation were the climate and dietary habits. The findings showed that pathogenesis of bladder stone formation and particularly, uric acid bladder stone is still not clearly understood.

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