[Early-middle stage effect of percutaneous spinal endoscopic BEIS technique for lumbar spinal stenosis].

Objective: To explore the clinical early-middle stage clinical effect of percutaneous spinal endoscopic with the technique of Broad Easy Immediate Surgery(BEIS) for lumbar spinal stenosis.

Methods: The clinical data of 57 patients with lumbar spinal stenosis treated by surgery from June 2015 to June 2016 were retrospectively analyzed, including 32 cases treated by percutaneous spinal endoscopic with the technique of BEIS (minimally invasive group) and 25 cases by posterior approach of lumbar pedicle screws internal fixation and intervertebral disc excision with bone graft fusion surgery (open surgery group). The pre-operative general data such as age, Body Mass Index (BMI) and etc.

Characteristic of PGDS potential regulation role on spermatogenesis in the Chinese mitten crab Eriocheir sinensis.

Prostaglandin D synthase (PGDS) catalyzes the isomerization of PGH2 to produce PGD2 in the presence of sulfhydryl compounds. In this study, a full length PGDS gene comprising 1250 nucleotides from the Chinese mitten crab Eriocheir sinensis (Es-PGDS) was characterized, with a 615 bp open reading frame encoding 204 amino acid residues. Its deduced peptide has high homology with other species' PGDS protein.