MACC: a visual interactive knowledgebase of metabolite-associated cell communications.

Metabolite-associated cell communications play critical roles in maintaining the normal biological function of human through coordinating cells, organs and physiological systems. Though substantial information of MACCs has been continuously reported, no relevant database has become available so far. To address this gap, we here developed the first knowledgebase (MACC), to comprehensively describe human metabolite-associated cell communications through curation of experimental literatures. MACC currently contains: (a) 4206 carefully curated metabolite-associated cell communications pairs involving 244 human endogenous metabolites and reported biological effects in vivo and in vitro; (b) 226 comprehensive cell subtypes and 296 disease states, such as cancers, autoimmune diseases, and pathogenic infections; (c) 4508 metabolite-related enzymes and transporters, involving 542 pathways; (d) an interactive tool with user-friendly interface to visualize networks of multiple metabolite-cell interactions. (e) overall expression landscape of metabolite-associated gene sets derived from over 1500 single-cell expression profiles to infer metabolites variations across different cells in the sample. Also, MACC enables cross-links to well-known databases, such as HMDB, DrugBank, TTD and PubMed etc. In complement to ligand-receptor databases, MACC may give new perspectives of alternative communication between cells via metabolite secretion and adsorption, together with the resulting biological functions. MACC is publicly accessible at: http://macc.badd-cao.net/.

[Effect of rotation stimulation on the anesthetic sensitivity of sevoflurane in rats].

OBJECTIVE: To explore the effect of simulated navigation stimulation on the anesthetic sensitivity of sevoflurane in rats, so as to provide basis for rational using sevoflurane during navigation. METHODS: SD rats were stimulated by Crampton model and the conditioned taste aversion (CTA) was regarded as criterion of motion sickness. (1) 60 rats were randomly divided into control (n = 15) and rotation group (n = 45). The changes of behavior and autonomic activity, sevoflurane concentration achieved sleep and anesthesia states, and the revitalization time were observed in two group rats. (2) 32 rats were randomly divided into control (I), rotation (II), anesthesia (III) and rotation plus anesthesia (IV) group (n = 8). The acetylcholine (Ach), norepinephrine (NE), r-aminobutyric acid (GABA), glutamic acid (Glu) of brain cortex, thalamus and hippocampus were determined respectively in the four group rats. RESULTS: In control group, the sevoflurane concentration achieved sleep and anesthesia states were 1.74% +/- 0.05% and 3.54% +/- 0.05% respectively, but, those concentrations were 1.51% +/- 0.06% and 3.14% +/- 0.08% in rotation group. There were lower significantly in rotation group than those in control group (P < 0.01). It was a major characteristic that all of the neurotransmitters were reduced significantly in II group, this was even more in brain cortex and thalamus (P < 0.01). In II group, Ach was upward in brain cortex, NE and GABA were reduced in hippocampus obviously. The change tendency of neurotransmitters in IV group was more close to II group, that was, the effect of rotation stimulation was more obvious. CONCLUSION: The anesthetic sensitivity of sevoflurane could be obvious increased in rats simulated navigation stimulation.

[Effects of different anesthesia and analgesia on erythrocyte immune function of patients with ovarian benign tumor treated by laparoscopic therapeutic].

AIM: To investigate the effects of different anesthesia and analgesia on erythrocyte immune function of patients with ovarian benign tumor treated by laparoscopic therapeutic. METHODS: 120 patients with ovarian benign tumor treated by laparoscopic therapeutic were randomly divided into two groups with 60 cases each.In group A, patients received general anesthesia eombined with thoracic epidural anesthesia during surgery, patients in group B received general anesthesia. The cervical venous blood samples were obtained at the following time points: before induction of anesthesia(T0), 30 min after anesthesia (T1), 1 h during operation (T2), 24 h after operation (T3), 48 h after operation (T4) and 72 h after operation (T5).RRCR, RRICR and RTRR were measured at different time points. RESULTS: RRCR, RRICR and RTRR in two groups decreased significantly from T1(P<0.05). RRCR in two groups was on the low-water mark at T4 and RRICR, RTRR was on the low-water mark at T3.There were no significantly different of RRCR, RRICR and RTRR in two groups at T0. There were significantly different of RRCR, RRICR and RTRR in two groups from T1 to T4(P<0.05), the increase in group A was less than that in group B(P<0.05). CONCLUSION: Anesthesia may harm on erythroeyte immune function of patients with ovarian benign tumor treated by laparoscopic therapeutic. The effect of general anesthesia combined with thoraeic epidural anesthesia on erythrocyte immune function was less.