Treatment of calculous pyonephrosis with percutaneous nephrolithotomy via the standard access / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the feasibility of treatment for calculous pyonephrosis with first stage percutaneous nephrolithotomy under the standard access.</p><p><b>METHODS</b>Thirty-six cases of calculous pyonephrosis and 36 cases of urolithiasis with no pyonephrosis were treated by percutaneous nephrolithotomy. In the nephrostomy, the caliber was dilated to F24. All the operations were preformed through the EMS lithotrity system. The intrapelvic pressure was detected in the operation. The hemoculture before and after operation, the germi culture of urine, and the temperature and blood leucocyte changes after operation were recorded. All the patients were treated by antibiotics before and after the operation.</p><p><b>RESULTS</b>All the patients were treated successfully. The average intrapelvic pressure were 23.2 cmH(2)O in non-pyonephrosis group and 22.8 cmH(2)O in pyonephrosis group. Both of the groups had 1 case of transient bacteremia after the operation. No significant difference was found in the other indices between the two groups.</p><p><b>CONCLUSION</b>EMS lithotrity system is safe and feasible for treating calculous pyonephrosis with stage I percutaneous nephrolithotomy via the standard access.</p>

Sorting of spermatogonial stem cells in mice / 中华男科学杂志

<p><b>OBJECTIVE</b>To search for an effective method for enriching spermatogonial stem cells in mice.</p><p><b>METHODS</b>Bilateral artificial cryptorchidism was performed on 20 six-week old male Kunming mice. Three months after the operation, the testes were removed and single cell suspension prepared by two-step enzyme digestion. FITC-conjugated anti-alpha6-integrin antibody and PE-conjugated anti-c-kit antibody were added for adequate time on ice. Then the cells with low side scatter light-scattering properties were sorted and positively stained for alpha6-integrin and negative c-kit expression. And the viability of the isolated cells was assessed by trypan blue exclusion.</p><p><b>RESULTS</b>The sorted spermatogonial stem cells constitute 2.8% of the testis cells and over 95% of them were viable.</p><p><b>CONCLUSION</b>FACS can be used to isolate quantities of viable spermatogonial stem cells.</p>