[The clinical signifinace of CEA, Cyfra21-1 and SCC in laryngeal carcinoma's clinicopathological parameters].

Objective:To investigate the clinical signifinace of carcinoembryonic antigen (CEA), cytokeratin fragment 21-1 (Cyfra21-1) or squamous cell carcinoma antigen (SCC) in laryngeal carcinoma's clinicopathological parametersthe.Method:CEA, Cyfra21-1, SCC in 53 laryngeal cancer's serum were routine preoperative detected to analyze the relationships between the tumor makers and the patient's age, primary tumor (T staging), lymph node metastasis (N staging), recurrence and metastasis.Result:According to age less than or equal to 60 years old and older than 60 years, lymph node metastasis or not lymph node metastasis, with or not with recurrence and metastasis and the T1+T2 and T3+T4 staging, the patients were divided into two groups. T test show that CEA was statistically significant in recurrence and metastasis (P= 0.047) and it is more prone to recurrence and metastasis, but CEA was not statistically significant in primary tumor (P= 0.252), lymph node metastasis (P= 0.268). Cyfra21-1 was not statistically significant in primary range (P= 0.402), but was statistically in lymph node metastasis (P= 0.041). While the lymph node metastasis, it is more prone to recurrence and metastasis in laryngeal cancer patients with Cyfra21-1's increasing (P= 0.027). SCC was not significant in primary lesions (P= 0.051),but was statistically significant in lymph node metastasis (P= 0.022). While lymph node metastasis, it is more prone to recurrence and metastasis in laryngeal cancer patients with SCC's increasing (P= 0.000). Logistic multivariate regression analization show that CEA,Cyfra21-1 and SCC were statistically significant in the recurrence and postoperative of laryngeal patients (P< 0.05) but not in the age of patient, primary tumor, the relationship and lymph node metastasis (P> 0.05).Conclusion:It is more prone to occurrence lymph node metastasis and recurrence and metastasis in the postoperative serum of laryngeal cancer patients with Cyfra21-1, SCC. CEA and Cyfra21-1 increasing. SCC were independent predictive factor of recurrence and metastasis after surgery. It is more prone to recurrence and metastasis after surgery in the laryngeal cancer patients with CEA, Cyfra21-1 and SCC preoperative increasing.

Effect of hyperbaric oxygenation on mitochondrial function of neuronal cells in the cortex of neonatal rats after hypoxic-ischemic brain damage.

The timing and mechanisms of protection by hyperbaric oxygenation (HBO) in hypoxic-ischemic brain damage (HIBD) have only been partially elucidated. We monitored the effect of HBO on the mitochondrial function of neuronal cells in the cerebral cortex of neonatal rats after HIBD. Neonatal Sprague-Dawley rats (total of 360 of both genders) were randomly divided into normal control, HIBD, and HIBD+HBO groups. The HBO treatment began immediately after hypoxia-ischemia (HI) and continued once a day for 7 consecutive days. Animals were euthanized 0, 2, 4, 6, and 12 h post-HI to monitor the changes in mitochondrial membrane potential (ΔΨm) occurring soon after a single dose of HBO treatment, as well as 2, 3, 4, 5, 6, and 7 days post-HI to study ΔΨm changes after a series of HBO treatments. Fluctuations in ΔΨm were observed in the ipsilateral cortex in both HIBD and HIBD+HBO groups. Within 2 to 12 h after HI insult, the ΔΨm of the HIBD and HIBD+HBO groups recovered to some extent. A secondary drop in ΔΨm was observed in both groups during the 1-4 days post-HI period, but was more severe in the HIBD+HBO group. There was a secondary recovery of ΔΨm observed in the HIBD+HBO group, but not in the HIBD group, during the 5-7 days period after HI insult. HBO therapy may not lead to improvement of neural cell mitochondrial function in the cerebral cortex in the early stage post-HI, but may improve it in the sub-acute stage post-HI.

[Effect of family integrate care on the development of preterm infants at 18 months of age].

Objective: To study the effect of family integrated care (FIC) in neonatal intensive care unit (NICU) to the development of preterm infants at 18 months of age. Method: This is a prospective parallel case-control study. Infants in FIC group were preterm infants enrolled in previous FIC study with gestational age (GA) 28-35 weeks. Study period was from July 2015 to July 2016. Subjects were all enrolled from Department of Child Healthcare in the Third Xiangya Hospital of Central South University. Infants in control group were gender, birth weight (BW), BW percentile and days of life (DOL) at follow-up matched (1∶1 ratio) preterm infants who did not enter FIC in NICU. The age at follow-up was 18 months. Study parameters were maternal education year, socioeconomic status (SES) by Graffar method, home observation for measurement of the environment (HOME), mental development index (MDI) and psychomotor development index (PDI) by mental and psychomotor Bayley scales of infant development (BSID). SPSS 20.0 of χ2 test, t test, Pearson coefficient test and Spearman coefficient test were used for the statistical analysis. Result: Totally 67 infants were enrolled in each of FIC group and control group, with percentage of male gender 52% (35 infants) and 51% (34 infants), representatively. GA of FIC group and control group was (32.4±1.7) and (32.2±1.6) weeks, BW was (1 690±415) and (1 719±412) g. Weight at 18 months follow-up was (10±1) and (10±1) kg, maternal education year was (15±2) and (15±2) years, SES was (42±6) and (41±6) score, HOME was (31±5) and (32±5) score, representatively. There was no significant difference between FIC group and control group in the above parameters, making these 2 groups comparable. The MDI and PDI of FIC group were significantly higher than those of control group ((95±9) vs. (86±9), (87±9) vs. (80±8) score, t=5.506, 4.502, both P=0.000). The MDI and PDI of all groups were positively correlated to GA (r=0.398 and 0.272, P=0.000 and 0.001), but the difference of MDI or PDI between FIC group and control group was not related to GA (r=0.679 and -0.393, P=0.094 and 0.383). Conclusion: FIC in NICU is beneficial to the development of preterm infants at 18 months of age. It is worthwhile to promote FIC in NICU in China. Trial registration: Chinese Clinical Trial Registry, ChiCTR-TRC-14004736.

Time-dependent plasticity of synaptic transmission produced by long-term potentiation of C-fiber evoked field potentials in rat spinal dorsal horn.

Our previous work has shown that repetitive stimulation of Adelta-fibers depresses long-term potentiation (LTP) of C-fiber evoked field potentials in spinal dorsal horn. Here, we tested the effects of the Adelta stimulation on the spinal LTP at different time points following LTP induction. Fifteen minutes after LTP induction Adelta stimulation depressed LTP by 44.1+/-4.2% (mean+/-SEM, n=7) for 69.3+/-18.5 min and 1 h after LTP the same Adelta stimulation depressed spinal LTP by only 16.9+/-3.1% for 21.9+/-2.0 min (n=7). Three hours after LTP, however, the Adelta stimulation produced a further potentiation (31.9+/-6.3%, n=7) lasting for all the recording periods (1-3 h). These data indicate that the effects of repetitive stimulation of Adelta-fibers on established spinal LTP of C-fiber evoked field potentials is time-dependent.

Effect of hyperbaric oxygenation on mitochondrial function of neuronal cells in the cortex of neonatal rats after hypoxic-ischemic brain damage

The timing and mechanisms of protection by hyperbaric oxygenation (HBO) in hypoxic-ischemic brain damage (HIBD) have only been partially elucidated. We monitored the effect of HBO on the mitochondrial function of neuronal cells in the cerebral cortex of neonatal rats after HIBD. Neonatal Sprague-Dawley rats (total of 360 of both genders) were randomly divided into normal control, HIBD, and HIBD+HBO groups. The HBO treatment began immediately after hypoxia-ischemia (HI) and continued once a day for 7 consecutive days. Animals were euthanized 0, 2, 4, 6, and 12 h post-HI to monitor the changes in mitochondrial membrane potential (ΔΨm) occurring soon after a single dose of HBO treatment, as well as 2, 3, 4, 5, 6, and 7 days post-HI to study ΔΨm changes after a series of HBO treatments. Fluctuations in ΔΨm were observed in the ipsilateral cortex in both HIBD and HIBD+HBO groups. Within 2 to 12 h after HI insult, the ΔΨm of the HIBD and HIBD+HBO groups recovered to some extent. A secondary drop in ΔΨm was observed in both groups during the 1-4 days post-HI period, but was more severe in the HIBD+HBO group. There was a secondary recovery of ΔΨm observed in the HIBD+HBO group, but not in the HIBD group, during the 5-7 days period after HI insult. HBO therapy may not lead to improvement of neural cell mitochondrial function in the cerebral cortex in the early stage post-HI, but may improve it in the sub-acute stage post-HI.