[Clinical efficiency of holmium laser enucleation of the prostate for small-volume benign prostatic hyperplasia with severe LUTS].

Objective: To evaluate the safety and clinical efficiency of holmium laser enucleation of the prostate (HoLEP) in the treatment of small-volume BPH (SBPH) complicated by severe lower urinary tract symptoms (LUTS).

Methods: We retrospectively analyzed the clinical data on 82 cases of SBPH with severe LUTS treated by HoLEP from January 2017 to December 2018. The patients were aged (65.

Blockade of CCR5-mediated myeloid derived suppressor cell accumulation enhances anti-PD1 efficacy in gastric cancer.

Purpose: Myeloid derived suppressor cells (MDSC) play an important role in tumor immune evasion and its level significantly increased in patients with gastric cancer. Studies confirmed the associations between MDSC and various cytokines in the peripheral blood. However, little is known about the mechanism drawing MDSC into tumor parenchyma.

Germline mutation analysis of hPMS2 gene in Chinese families with hereditary nonpolyposis colorectal cancer.

Aim: To study the germline mutation of hPMS2 gene in 26 unrelated Chinese hereditary nonpolyposis colorectal cancer (HNPCC) probands and to fulfill the screening strategy for HNPCC in Chinese.

Methods: Genomic DNA was extracted from the peripheral blood. To avoid the interference of pseudogene in detection of the remaining 11 exons (exon 1-5, 9, 11-15), long-range polymerase chain reaction (PCR) was conducted to amplify the complete coding region of hPMS2 gene firstly.

MLH1 promoter germline-methylation in selected probands of Chinese hereditary non-polyposis colorectal cancer families.

Aim: To detect the MLH1 gene promoter germline-methylation in probands of Chinese hereditary nonpolyposis colorectal cancer (HNPCC), and to evaluate the role of methylation in MLH1 gene promoter and molecular genetics in screening for HNPCC.

Methods: The promoter germline methylation of MLH1 gene was detected by methylation-specific PCR (MSP) in 18 probands from unrelated HNPCC families with high microsatellite-instability (MSI-H) phenotype but without germline mutations in MSH2, MLH1 and MSH6 genes. At the same time, 6 kindreds were collected with microsatellite-stability (MSS) phenotype but without germline mutations in MSH2, MLH1 and MSH6 genes as controls.

[Study on the germline mutation of MSH6 gene in Chinese hereditary nonpolyposis colorectal cancer pedigrees using PCR based sequencing].

Objective: To detect the germline mutation of mismatch repair gene (MSH6) in hereditary nonpolyposis colorectal cancer (HNPCC) kindreds fulfilling different clinical criteria.

Methods: The germline mutations of MSH6 gene were detected by PCR based DNA sequencing in 39 unrelated HNPCC probands fulfilling different clinical criteria in which MSH2 and MLH1 mutations were excluded. The exons with missense mutations were analyzed using PCR sequencing in the germline genomic DNA of 137 healthy persons.

Three novel missense germline mutations in different exons of MSH6 gene in Chinese hereditary non-polyposis colorectal cancer families.

Aim: To investigate the germline mutations of MSH6 gene in probands of Chinese hereditary non-polyposis colorectal cancer (HNPCC) families fulfilling different clinical criteria.

Methods: Germline mutations of MSH6 gene were detected by PCR-based DNA sequencing in 39 unrelated HNPCC probands fulfilling different clinical criteria in which MSH2 and MLH1 mutations were excluded. To further investigate the pathological effects of detected missense mutations, we analyzed the above related MSH6 exons using PCR-based sequencing in 137 healthy persons with no family history.

[Study on significance of single nucleotide polymorphisms in the redox domain of aprimidinic/apurinic endonuclease/redox factor-1 gene in Chinese sporadic colorectal cancer].

Objective: To investigate the relationship between the single nucleotide polymorphisms(SNPs) in the redox domain of aprimidinic/apurinic endonuclease/redox factor-1(APEX) gene and the development of sporadic colorectal cancer.

Methods: One hundred and fifty cases of sporadic colorectal cancers and 143 peripheral blood samples from healthy population were screened for genetic polymorphisms or mutations in the redox domain by denaturing gradient gel electrophoresis followed by DNA sequencing.

Results: There were two SNPs identified in the redox domain of APEX gene, namely, 453G to T and 1247A to G.