Effectiveness of azithromycin mass drug administration on trachoma: a systematic review / 中华医学杂志(英文版)

BACKGROUNDS@#Azithromycin mass drug administration (MDA) is a key part of the strategy for controlling trachoma. This systematic review aimed to comprehensively summarize the present studies of azithromycin MDA on trachoma; provide an overview of the impact of azithromycin MDA on trachoma in different districts; and explore the possible methods to enhance the effectiveness of azithromycin MDA in hyperendemic districts.@*METHODS@#PubMed, Embase, the Cochrane Central Register of Controlled Trials, Web of Science, and ClinicalTrials.gov were searched up to February 2021 with no language restriction. Studies reporting the effect of azithromycin MDA on trachoma were included. Mathematical modeling studies, animal studies, case reports, and reviews were excluded. The trachomatous inflammation-follicular (TF) 30.0%), especially with baseline TF >50.0%, annual MDA was unable to achieve the TF 10.0% is not appropriate for all eligible districts.

Effects of PINK1 gene on cell apoptosis and cell autophagy in neonatal mice with hypoxic-ischemic brain damage / 中国当代儿科杂志

<p><b>OBJECTIVE</b>To study the effect of PINK1 (phosphatase and tensin homolog deleted on chromosome ten induced putative kinase 1) gene on cell apoptosis and cell autophagy in neonatal mice with hypoxic-ischemic brain damage (HIBD).</p><p><b>METHODS</b>Seventy-two wild-type C57BL/6 mice and 72 PINK1 gene knockout neonatal C57BL/6 mice were randomly divided into four groups: sham-operated wild-type (SWT), HIBD model wild-type (MWT), sham-operated knockout (SKO) and HIBD model knockout (MKO). HIBD model was prepared by low oxygen exposure for 2.5 hours after right carotid artery ligation. After 24 hours of hypoxia-ischemia treatment, TTC (2,3,5-triphenyl four azole nitrogen chloride) staining was used to measure brain infarct volume. The immunohistochemical staining was used to measure the expression of cell apoptosis protein cleaved-caspase-3 (CC3) in brain tissues. The TUNEL method was used to measure cell apoptosis. The immunofluorescence staining and Western blot were used to measure the expression of cell autophagy protein LC3.</p><p><b>RESULTS</b>Compared with the MWT group, the infarct volume of brain tissues was markedly reduced in the MKO group (P<0.05), the number of apoptotic cells and the cell apoptosis index were markedly decreased in the MKO group (P<0.05), the expression of apoptosis protein CC3 was significantly reduced in the MKO group (P<0.05), the expression of cell autophagy protein LC3 was significantly decreased in the MKO group, and the autophagy indicator LC3II/LC3I was also markedly reduced in the MKO group (P<0.05).</p><p><b>CONCLUSIONS</b>PINK1 gene knockout can protect neonatal mice from HIBD.</p>

CLONING AND IDENTIFYING ANTIBIOTIC RESISTANCE RELATIONAL GENES OF NEISSERIA GENORRHOEAE / 微生物学通报

To clone the differential genes in antibiotic resistence Neisseria gonorrhoeae,the library that contains the fragments of differential genes between antibiotic resistance strain and standard reference strain of Neisseria gonorrhoeae was constructed which used suppression subtractive hybridization technique. Then the antibiotic resistance relational genes fragments were cloned and analyzed. Antibiotic resistance Neisseria gonorrhoeae subtractive library that has high subtractive efficiency was set up successfully. The amplified library contained 2500 positive clones. Sequence analysis was performed to find the fragments of antibiotic resistance relational genes. Five sequences were unknown previously. The fragments of antibiotic resistance genes may provide an important clue for studying the mechanism of occurrence and development of antibiotic resistance Neisseria gonorrhoeae.