Objective To investigate the etiology, pathology, pathogenesy and treatment in patient with rhabdomyolysis (RM) complicated with acute renal failure(ARF). Methods Analysis of clinical and muscle pathological data combined with literatures were made for a patient with RM-ARF.Results The patient who had experienced exercise induced RM for 5 years. Alcohol drinking and infection were led to RM with ARF for this time. There was non-special inflammatory feature in light microscope by biopsy. The principle of RM management was prevention of hypovolemia and acidification of urine. Hemodialysis (HD)was chosen for treatment of ARF and basic recovery was obtained.Conclusions The etiology of this patient may be the alcohol drinking, particularly the infection which developed on the basis of recurrent RM. Muscle biopsy is useful not only for observing the pathological features of RM, but also for differentiation of etiological factors. The HD therapy used in time may be the key to get favorable effect for this case.

Clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated proteins (Cas) system is a hotspot of gene editing and gene expression research, in which CRISPR/Cas13 system provides a new direction for RNA interference and editing. In this study, we designed and synthesized the corresponding gRNAs of CRISPR/Cas13a and CRISPR/Cas13b systems in non-homologous end joining (NHEJ) pathway, such as Ku70 and Lig4, and then detected the expression of ku70 and lig4 in HEK293T cells. The CRISPR/Cas13a system could efficiently knockdown the mRNA expression of ku70 and lig4 more than 50%, and CRISPR/Cas13b system also suppressed ku70 and lig4 about 92% and 76%, respectively. Also, CRISPR/Cas13a, b systems could down-regulate Ku70 and Lig4 proteins level to 68% and 53%, respectively. The study demonstrates that the CRISPR/Cas13 system could effectively knockdown the expression of RNA and protein in HEK293T cells, providing a new strategy for gene function and regulation research.
CRISPR-Cas Systems ; DNA Ligase ATP ; genetics ; Gene Expression Regulation ; genetics ; Gene Knockdown Techniques ; HEK293 Cells ; Humans ; Ku Autoantigen ; genetics