Concern on antibiotics contamination has been raised because of its serious environmental impact in recent years.The application of antibiotics,measurement method for antibiotics,mechanism of antibiotics degradation,and impact of antibiotics contamination on environment and human health were reviewed and commented.The advisable solution and future researches were prospected in this review,too.

Objective To compare the two cell adhesion assay techniques based on 51 Cr release and 3H-TdR incorporation.Methods Firstly,the cells to be tested were cultured to confluence in the 96 well plate for 24 hours. After with 51 Cr or 3H-TdR label, the isotope labeled cells were add into plate wells and incubated for another 4 hours. Then the un-adhered cells were removed by gently washing. The cpm of two assay system were counted, the sensitivity and stability of two methods were compared.Results Assay methods based on 51 Cr release and 3H-TdR incorporation could both reflect the cell adhesion level correctly. In assaying sensitivity and stability showed that the 3H-TdR incorporation assay was better than in 51 Cr release assay.Conclusions Adhesion method based on isotope label could provide good sensitivity and stability. The sensitivity and stability of 3H-TdR incorporation is better than that of 51 Cr release assay.

Adolescent ; Adult ; Elbow Joint ; injuries ; Electroacupuncture ; Female ; Humans ; Male ; Medicine, Chinese Traditional ; Myositis Ossificans ; therapy ; Pain Management ; Young Adult

In this study, the effects of blood glucose and blood pressure on the compliance of large and small arteries were investigated. The results showed that arterial compliances of both large and small arteries were decreased in patients with diabetes mellitus. In non-diabetic patients with well controlled blood pressure, the compliance of small arteries was markedly improved. These results suggested that both blood glucose and blood pressure affected arterial compliance.

Objective:To evaluate the levels of interleukin 18(IL-18) mRNA in peripheral blood mononuclear cells(PBMCs),livers and spleens in monkey endotoxic shock models.Methods:Cynomolgus monkeys were injected i.v. with lipopolysaccharide(LPS) (2.8 mg/kg) to prepare the endotoxic shock models. The mRNA levels of IL-18 in PBMCs,livers and spleens were tested by fluorescence semi-quantitative realtime reverse transcription(RT)-PCR and compared with that of TNF-? and IL-1?.Results:IL-18 mRNA expression in PBMCs remarkably increased at 120 min after LPS administration, so did in livers and in spleens at the same time. mRNA levels of TNF-? in PBMCs peaked at 60 min after LPS injection, and also increased markedly at 120 min in livers and spleens. IL-1? mRNA levels peaked at 60 min in PBMCs, and did not change so much in livers and in spleens.Conclusion:IL-18 mRNA expression in PBMCs can be up-regulated by LPS, but changed latterly than TNF-? and IL-1? in endotoxic shock cynomolgus monkeys. It is presumed that IL-18 can be produced by PBMCs and liver Kupffer cells(maybe splenic macrophages),and TNF-? is produced by a variety of cells, but IL-1? in bloodstream mainly come from PBMCs after LPS challenge.

Objective To investigate effect of continuous veno-venous hemofiltration on treatment of children with acute re-spiratory distress syndrome .Methods A total of 84 cases of children with acute respiratory distress syndrome were divided into control group (n= 42) and observation group (n = 42) .Control group was given conventional therapy including etiological treat-ment ,mechanical ventilation ,fluid management and anti-inflammatory treatment .Besides conventional therapy similar to control group ,observation group was administrated continuous veno-venous hemofiltration .Gender ,age ,admission critical illness score (PICS) ,clinical manifestations ,blood gas indexes (PaO2 ,SaO2 ) and oxygenation index (OI = PaO2 /FiO2 ) before and after treat-ment ,duration of mechanical ventilation ,pediatric intensive care unit (ICU) hospitalization days and mortality in above two groups were analyzed retrospectively .Results There were not significant difference in gender ,age and admission critical illness score (PICS) of two groups(P> 0 .05) .PaO2 ,SaO2 and OI of observation group were higher than that of control group in the third and fifth day after treatment (P < 0 .05) .The average ICU hospitalization day of observation group was shorter than that of control group (P< 0 .05) .Mortality of observation group was lowered compared with control group (P< 0 .05) .Conclusion Veno-venous hemofiltration could effectively reduce duration of mechanical ventilation and mortality in treatment of children with acute respirato -ry distress syndrome ,which is worth clinical popularization .

Objective To investigate the regulation of protein kinase C(PKC) to the expression of β-1,4-galactusyhransferase- Ⅰ ( β-1,4-GalT- Ⅰ ) and the influence on cytoskeleton and adherence ability of human umbilical vein endothelial cells(HUVECs) when stimulated by lipopolysaccharide (LPS). Methods Cultured HUVECs were pretreated by various PKC inhibitors or phorbol 12-myristate 13-acctate( PMA), an excitomotor of PKC respectively for 30 min, then stimulated by LPS for 4 h. β-1,4-GalT-Ⅰ expression were detected by RT-PCR and Western blot, expression of β-1,4-galactosylated carbohydrate chains and cytoskeleton were assayed by immumofluorescence, and adherence ability of HUVECs was observed by endothelialmonocyte cell adherence test. Results Up-regulated expression of β-1,4-GalT- Ⅰ and β-1,4-galactosylated carbohydrate chains in HUVECs stimulated by LPS were suppressed by PKC inhibitors and increased by PMA. F-actin and β-1,4-GalT- Ⅰ were partly co-localized in HUVECs. PKC inhibitor inhibited the effect of LPS on the distribution of F-actin and β-1,4-GalT- Ⅰ. Adherence ability of HUVECs enhanced by LPS was significantly suppressed by PKC inhibitor. Conclusion PKC signal transduction pathway may participate in regulating β-1,4-GalT-Ⅰ expression in endothelial cells stimulated by LPS. Furthermore, polytypes of PKC may participate in this regulating process; PKC might regulate cytoskeleton reorganization and adherence ability of EC through β-1,4-GalT-Ⅰ during inflammation.

Objective:To study the role of indocyanine green(ICG)fluorescence imaging in laparoscopic partial splenectomy (LPS).Methods:The data of 4 patients who underwent ICG fluorescence imaging technology for LPS at Beijing Luhe Hospital Affiliated to Capital Medical University from May 2017 to May 2020 were retrospectively analyzed. There were 3 females and 1 male, aged 46, 41, 27 and 12 years respectively. The extents of spleen preservation were compared between ICG fluorescence imaging with ordinary white light during operation. The residual splenic remnants were tested with fluorescence imaging after splenectomy, which showed fluorescence fading indicating good vascular perfusion.Results:ICG fluorescence imaging was performed on 4 patients. The operation time ranged from 180.0 to 250.0 min, and the intraoperative blood loss ranged from 40.0 to 200.0 ml. The postoperative hospital stay ranged from 4 to 14 days. There were no serious complications. Postoperative histopathology showed: splenic cyst ( n=1), splenic hemangioma ( n=2), and splenic laceration ( n=1). Conclusions:ICG fluorescence imaging technology had a significant role to play in partial splenectomy. This study showed this technique to improve safety of laparoscopic partial splenectomy.

OBJECTIVETo observe the effect of Qianliean Pill (QP) on inflammatory factors such as IL-1β, IL-10, and tumor necrosis factor α (TNF-α) in chronic nonbacterial prostatitis (CNP) model rats, and to explore its therapeutic mechanism.

METHODSCNP rat model was established by castration and estradiol benzoate injection. Totally 50 rats were randomly divided into 5 groups, i.e., the model group, the positive medicine group, the high dose QP group, the medium dose QP group, and the low dose QP group, 10 in each group. Besides, 10 normal rats were recruited as a normal control group. Since the 8th day of castration, Pulean Tablet (PT) at 10. 80 g/kg was administered to rats in the positive medicine group by gastrogavage. QP at 11.00, 5.50, and 2.75 g/kg was administered to rats in high, medium, and low dose QP groups by gastrogavage. Distilled water at 2 mL/100 g was administered to rats in the model group and the normal control group by gastrogavage, once daily for 30 successive days. After 30 days of medication all rats were sacrificed and their prostate tissues were extracted. The prostatic index was calculated. Pathological changes of rat prostate were observed under light microscope. Meanwhile, levels of IL-1β, IL-10, and TNF-α were detected using enzyme linked immunosorbent assay.

RESULTSCompared with the normal control group, the prostate index obviously decreased, levels of IL-1β, TNF-α, and IL-10 in the prostate tissue significantly increased in the model group (P < 0.01). Compared with the model group, the prostate index obviously decreased in high and medium dose QP groups, and the positive medicine group (P < 0.01); levels of IL-1β, TNF-α, and IL-10 obviously decreased in each QP group and the positive medicine group (P < 0.01). Compared with the positive medicine group, the TNF-α level decreased more obviously in the high dose QP group (P < 0.05). Compared with the normal control group, inflammatory reactions occurred obviously in rats' prostate of the model group. Compared with the model group, inflammatory reactions were milder in rats' prostate of each QP group and the positive medicine group, and their degrees were improved to some extent.

CONCLUSIONQP could treat CNP, which might be achieved by regulating local immune state of the prostate, relieving inflammatory reactions of the prostate, and lowering levels of IL-β, TNF-α, and IL-10 in the prostate tissue.

Animals ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Humans ; Interleukin-10 ; metabolism ; Interleukin-1beta ; metabolism ; Male ; Prostatitis ; drug therapy ; metabolism ; Rats ; Tumor Necrosis Factor-alpha ; metabolism

The drugs such as sildenafil adulterated in herbal products and dietary supplements may endanger human health. The number of the new modified derivatives is increasing recently. Based on Q-TOF-MS, a new sildenafil analogue was found. It was isolated and purified by preparative liquid chromatography. Its structure was determined by NMR, as 1-[4-propoxy-3-(6, 7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4, 3-d] pyrimidin-5-yl)phenylsulfonyl]-4-methylpiperazine. Compared with sildenafil, the ethoxy group of the benzene ring moiety was moved to the propoxy group, which had not been reported in China. The mass spectrometric behavior pattern of the structure type was summarized, which can greatly accelerate the structural analysis of novel analogues.
Chromatography, High Pressure Liquid ; Dietary Supplements ; analysis ; Drug Contamination ; Magnetic Resonance Spectroscopy ; Molecular Structure ; Piperazines ; chemistry ; isolation & purification ; Sildenafil Citrate ; chemistry ; Spectrometry, Mass, Electrospray Ionization