Thoracic paravertebral nerve block combined laryngeal mask airway with preservation of spontaneous breathing can accelerate postoperative recovery.

OBJECTIVE: This study aimed to examine the potential benefits of Thoracic Paravertebral Nerve Block (TPVB) coupled with Laryngeal Mask Airway (LMA) and the maintenance of spontaneous breathing anesthesia, in contrast to general anesthesia utilizing double-lumen endobronchial intubation, on promoting recovery following thoracoscopic surgery. PATIENTS AND METHODS: A randomized controlled trial was carried out involving sixty patients set for Video-Assisted Thoracoscopic Surgery (VATS) at the Affiliated People's Hospital of Jiangsu University from February 2021 to January 2022. Patients were randomized to either the TPVB and LMA with spontaneous breathing anesthesia group (non-intubation group, NI group) or the general anesthesia with double-lumen endobronchial intubation group (Intubation group, I group). The primary outcome measured was the duration of hospitalization. Secondary outcomes included early postoperative rehabilitation indicators, postoperative complications, Visual Analogue Score (VAS), and inflammatory response markers. RESULTS: Patients in the NI group experienced significantly shorter hospital stays than those in the I group (p < 0.05). Early postoperative recovery, assessed by metrics including the first exhaust time, food intake time, first ambulation time, and duration of chest-tube placement, was superior in the NI group (p < 0.05). Postoperative complications such as nausea and vomiting, pulmonary infection, atelectasis, sore throat, and hoarseness, along with cortisol and C-reactive protein (CRP) levels at the end of the operation and 24 h post-operation, and VAS values within the first 12 h post-operation, were significantly lower in the NI group (p < 0.05). However, blood loss, operation time, and VAS values at 24 h and 48 h post-surgery showed no significant differences between the two groups. CONCLUSIONS: Our findings suggest that TPVB, in conjunction with LMA and spontaneous breathing anesthesia, may expedite postoperative recovery in patients undergoing VATS.

[Investigation on the role and mechanism of prostagland in D2 synthase in non-small cell lung cancer].

Objective: To investigate prostaglandin D2 synthase (PTGDS) expression in non-small cell lung carcinoma (NSCLC) and clarify whether PTGDS could be a biomarke. Methods: Firstly, the protein expression level of PTGDS in adenocarcinoma (ADC) and squamous cell carcinoma (SCC) were analyzed respectively through Gene Expression Omnibus (GEO)dataset. Then, the results were verified by using tissue microarray (TMA). At last, in order to explore the inner mechanism, lung adenocarcinoma cell lines A549 and Calu-3 were selected to over-express PTGDS, and then transwell chamber assay and Western blotting were used to detect associated changes. Results: PTGDS expression is down-regulated in both ADC and SCC, however, no statistical difference has been found between the two groups, and PTGDS was only related to the progression of ADC. Furthermore, After over-expression of PTGDS, the invasiveness of ADC cells was significantly decreased. Western blotting showed that the inner mechanisms may be related to mitogen-activated protein kinase (MAPK) signal pathway. Conclusions: This study revealed that PTGDS was down-regulated in NSCLC and only related to the development of ADC. It may be a potential biomarker for the diagnosis and prognosis of NSCLC. However, whether it could be used for the treatment of NSCLC still needs more research.

[Research on Yi yu (Medical Education), a professional journal on medical education during the period of Anti-Japanese War].

Founded in October, 1935, Yi yu (Medical Education) was the first professional journal of medical education in China. Unlike other medical journals, Yi yu had strong official background. It was sponsored by the Medical Education Committee of Ministry of Education of the National Government, whose chief editor, editors and authors were mostly authoritative scholars. Its publication time was 1935-1941, and was once an important basis reflecting the development levels and results of Chinese medicine during the Anti-Japanese War, introspecting Chinese medicine education, spreading medical knowledge. From a side, its creation and development reflected the interaction between the journals of science and technology and Chinese society from middle of the 1930s to early 1940s.

[On medical risk control in Chinese missionary hospitals in China during 1820-1860].

In the missionary hospitals founded in the nineteenth century by the missionaries in China, the sprout of consciousness of medical risk control emerged. They did their best to avoid medical accidents which might lead to anti-missionary struggle by the Chinese people, and were especially cautious to control the happening of medical accidents. First of all, the hospitals made careful screening on patients by giving priority to those patients pursuing treatment of eye diseases, and barely forced to accept patients with intractable and critical diseases. Second, before the operation, the missionary doctors usually let the patient sign an agreement of consent for surgical operation, with the patient him/herself responsible for all the consequences of operation. Generally, the patient(s) won't be hospitalized, even though the work of their nursing was generally done by the patient's relatives. All these three initiatives promoted the spread of western medicine in China and expanded a positive influence of western medicine, though it seemed to be contradictory to the principles of equality and universal love of Christianity.

Pravastatin and C reactive protein modulate protease- activated receptor-1 expression in vitro blood platelets.

Protease-activated receptor-1 (PAR-1) plays an important role in mediating activation of human platelets by thrombin. However, mechanism of statin in ADP-induced platelet PAR-1 expression is also unknown. Aggregometry, flow cytometry, immunoblotting and ELISA were used to determine role of pravastatin participating in ADP-induced platelet activation and PAR-1 expression. ADP stimulation significantly increased PAR-1 expression on platelets. PAR-1 antagonist SCH-79797 inhibited platelet aggregation as well as decreased platelet P-selectin expression induced by ADP. CRP inhibited PAR-1 expression induced by ADP in a concentration-dependent manner. Pravastatin treatment reduced PAR-1 expression in a concentration-dependent manner. Combination treatment of CRP and Pravastatin significantly reduced platelet PAR-1 expression induced by ADP. By western-blot analysis, pravastatin treatment did not influence total PAR-1 after ADP treatment. CRP decreased platelet total PAR-1 expression induced by ADP. Pravastatin and CRP reduced TXB2 formation by ADP significantly. CRP decreased thrombin fragment F1+2 level with ADP treatment. Pravastatin, in contrast, did not influence F1+2 level. Upon treatment with Pravastatin reduced platelet LOX-1 expression induced by ADP. In conclusion, PAR-1 served as a critical mechanism to relay platelet activation process induced by ADP. CRP and pravastatin reduce PAR-1 expression in platelet by ADP pathway.

[Foreign firms and dissemination of western medicine in China before the Opium War].

From the beginning of the 19th century to the Opium War, by taking the advantages of free entering and departing China, and to protect themselves, the foreign firms introduced vaccination technique into China. This is the beginning of the introduction of western medicine to China. After 1807, following the arrival of protestant missionaries, foreign firms became the stronghold for the missionaries to conceal their missionary status so as to propagate the principles of Christianity. With the aid of the business firms employee's legal identity, the missionaries started their activities of delivering western medicines and practices. Later, the business firms gained commercial profits through the subsidizing medical services and infiltration. Although western medicine objectively improved the medical conditions in China and promoted the modernization of Chinese health career, but it cast an important aspect of western aggression against China at the same time.

Drastic Pressure Effect on the Extremely Large Magnetoresistance in WTe2: Quantum Oscillation Study.

The quantum oscillations of the magnetoresistance under ambient and high pressure have been studied for WTe2 single crystals, in which extremely large magnetoresistance was discovered recently. By analyzing the Shubnikov-de Haas oscillations, four Fermi surfaces are identified, and two of them are found to persist to high pressure. The sizes of these two pockets are comparable, but show increasing difference with pressure. At 0.3 K and in 14.5 T, the magnetoresistance decreases drastically from 1.25×10(5)% under ambient pressure to 7.47×10(3)% under 23.6 kbar, which is likely caused by the relative change of Fermi surfaces. These results support the scenario that the perfect balance between the electron and hole populations is the origin of the extremely large magnetoresistance in WTe2.

Quantum transport evidence for the three-dimensional Dirac semimetal phase in Cd3As2.

We report the quantum transport properties of Cd3As2 single crystals in a magnetic field. A large linear quantum magnetoresistance is observed near room temperature. With decreasing temperature, the Shubnikov-de Haas oscillations appear in both the longitudinal resistance R(xx) and the transverse Hall resistance R(xy). From the strong oscillatory component ΔR(xx), a linear dependence of the Landau index n on 1/B is obtained, and it gives an n-axis intercept between 1/2 and 5/8. This clearly reveals a nontrivial π Berry's phase, which is a distinguished feature of Dirac fermions. Our quantum transport results provide bulk evidence for the existence of a three-dimensional Dirac semimetal phase in Cd3As2.

Enhanced thermoelectric performance of Cu2CdSnSe4 by Mn doping: experimental and first principles studies.

Serials of Mn doping by substituting Cd sites on Cu2CdSnSe4 are prepared by the melting method and the spark plasma sintering (SPS) technique to form Cu2Cd1-xMnxSnSe4. Our experimental and theoretical studies show that the moderate Mn doping by substituting Cd sites is an effective method to improve the thermoelectric performance of Cu2CdSnSe4. The electrical resistivity is decreased by about a factor of 4 at 723 K after replacing Cd with Mn, but the seebeck coefficient decreases only slightly from 356 to 289 µV/K, resulting in the significant increase of the power factor. Although the thermal conductivity increases with the doping content of Mn, the figure of merit (ZT) is still increased from 0.06 (x = 0) to 0.16 (x = 0.10) at 723 K, by a factor of 2.6. To explore the mechanisms behind the experimental results, we have performed an ab initio study on the Mn doping effect and find that the Fermi level of Cu2CdSnSe4 is shifted downward to the valence band, thus improving the hole concentration and enhancing the electrical conductivity at the low level doping content. Optimizing the synthesis process and scaling Cu2Cd1-xMnxSnSe4 to nanoparticles may further improve the ZT value significantly by improving the electrical conductivity and enhancing the phonon scattering to decrease the thermal conductivity.

Association between dietary intake of flavonoid and bone mineral density in middle aged and elderly Chinese women and men.

SUMMARY: This large cross-sectional study examined the associations of dietary intakes of total flavonoids and their subtypes with bone density in women and men. We found that greater flavonoid intake was associated with higher bone density in women but not in men. INTRODUCTION: Studies in vitro and in animal models suggest a potential effect of flavonoids on bone health. Few studies have examined the association between the habitual intake of flavonoids and bone mineral density (BMD) in humans. METHODS: The cross-sectional study recruited 2,239 women and 1,078 men. A semiquantitative food frequency questionnaire was administered in face-to-face interviews to assess habitual dietary flavonoid intake using food composition databases. BMD was measured over the whole body (WB) and in the femoral neck (FN) and lumbar spine (LS) by dual-energy X-ray absorptiometry (DXA). RESULTS: After adjusting for covariates, women who consumed higher total flavonoids, and the subtypes of flavonols, flavan-3-ols, flavones, and proanthocyanidins tended to have greater BMD at the WB, LS, and FN (all P-trend < 0.05). Women in the highest (vs. the lowest) quartile of total flavonoids intake had 0.020 (1.91 %), 0.021 (2.51 %), and 0.013 (1.99 %) g/cm(2) greater BMD at the whole body, LS, and FN, respectively. For the subtypes of flavonoids, the corresponding differences in BMD (in g/cm(2)) were 0.012-0.021 (flavan-3-ols), 0.013-0.020 (flavonols), 0.016-0.019 (flavones), and 0.014-0.016 (proanthocyanidins), respectively. A higher intake of flavonones was associated with a greater BMD at the whole body (P-trend 0.041) and the FN (P-trend 0.022). In men, there were no significant positive associations between the consumption of total flavonoids and the subclasses and BMD at any sites. CONCLUSION: Dietary flavonoids intake was positively associated with BMD in women. Further large studies are needed to clarify this issue in men.

Soy food consumption, cardiometabolic alterations and carotid intima-media thickness in Chinese adults.

BACKGROUND AND AIM: The associations between soy food consumption, cardiometabolic disturbances and subclinical atherosclerosis remain controversial due to limited evidence. We examined the associations of habitual soy food consumption with cardiometabolic disturbances and carotid intima-media thickness (CIMT). METHODS AND RESULTS: We included 2939 subjects (2135 women and 804 men) aged 50-75 years in this community-based cross-sectional study. Dietary data and other covariates were collected using interviewer-administered questionnaires. We determined CIMT in relation to each subject's common carotid artery, internal carotid artery, carotid bifurcation, blood lipids, glucose and urine acid, blood pressure and waist circumference. A logistic regression model was applied to estimate the odd ratios (ORs) and 95% confidence intervals (CIs), and linear regression was used to estimate the regression coefficient and 95% CIs. After adjusting for potential confounders, we found that greater consumption of soy protein (6.1 vs. 0.5 g/d) was inverse associated with the presence of elevated total cholesterol (TC), dyslipidemia, abdominal obesity and hyperuricemia in women, and with abdominal obesity in men, although no significant sex-soy interactions were observed (P: 0.145-0.985). The consumption of soy protein and isoflavones was inversely associated with the number of cardiometabolic disturbances among women, but not men. There were no significant associations of soy protein and isoflavones with CIMT thickening and other cardiometabolic disturbances. CONCLUSION: Greater soy consumption was associated with a lower presence of elevated TC, dyslipidemia, hyperuricemia and less number of cardiometabolic disturbances components in women.

Life satisfaction, coping, self-esteem and suicide ideation in Chinese adolescents: a school-based study.

PURPOSE: To determine the prevalence and associated risk factors of suicidal ideation (SI) among junior, senior high and college school students. METHODS: A total of 5249 students in Anhui Province of China participated in a self-administered anonymous survey. RESULTS: Females were more likely to report SI than males (32.1% vs. 20.6%). Using binary logistic regression analysis, we found that being female, passive coping, lower family satisfaction, lower school satisfaction, lower living environment satisfaction and higher self-esteem were associated with an increased risk of SI. CONCLUSIONS: This study suggested that SI was common among Chinese adolescents. Being female, high score of passive coping, lower family satisfaction, lower school satisfaction, lower living environment satisfaction and higher self-esteem were significantly associated with an increased risk of SI. There is an urgent need to take effective measures reducing the rate of SI among adolescents through collaboration among families, schools and society.

Label-free, real-time detection of the dynamic processes of protein degradation using oblique-incidence reflectivity difference method.

Based on the requirements for studying the dynamic process of proteinase action substrates in life science, we selected six random proteins including 1L-10, SCGB2A2, CENPQ, GST, HK1, KLHL7, as well as five different concentrations of 1L-10 proteins of 1 mg/ml, 0.5 mg/ml, 0.25 mg/ml, 0.125 mg/ml, and 0.0625 mg/ml, and fabricated two types of substrate protein microarrays, respectively. We detected the dynamic processes of proteins degraded by proteinase K using oblique-incidence reflectivity difference (OIRD) method in a label-free and real-time manner. We obtained the relevant degradation velocities and the degradation time. The experimental results demonstrate that OIRD has the ability to study proteinase action substrates which is out of reach of label methods and is expected to offer opportunities to determine protease-substrate relationships on the systems biology level.

TRPC channels: integrators of multiple cellular signals.

TRPC channels are ubiquitously expressed among cell types and mediate signals in response to phospholipase C (PLC)-coupled receptors. TRPC channels function as integrators of multiple signals resulting from receptor-induced PLC activation, which catalyzes the breakdown of phosphatidylinositol 4,5-bisphosphate (PIP2) to produce inositol 1,4,5-trisphosphate (InsP3) and diacylglycerol (DAG). InsP3 depletes Ca2+ stores and TRPC3 channels can be activated by store-depletion. InsP3 also activates the InsP3 receptor, which may undergo direct interactions with the TRPC3 channel, perhaps mediating store-dependence. The other PLC product, DAG, has a direct non-PKC-dependent activating role on TRPC3 channels likely by direct binding. DAG also has profound effects on the TRPC3 channel through PKC. Thus PKC is a powerful inhibitor of most TRPC channels and DAG is a dual regulator of the TRPC3 channel. PLC-mediated DAG results in rapid channel opening followed later by a slower DAG-induced PKC-mediated deactivation of the channel. The decreased level of PIP2 from PLC activation also has an important modifying action on TRPC3 channels. Thus, the TRPC3 channel and PLCgamma form an intermolecular PH domain that has high specificity for binding PIP2. This interaction allows the channel to be retained within the plasma membrane, a further operational control factor for TRPC3. As nonselective cation channels, TRPC channel opening results in the entry of both Na+ and Ca2+ ions. Thus, while they may mediate Ca2+ entry signals, TRPC channels are also powerful modifiers of membrane potential.

POLG1, C10ORF2, and ANT1 mutations are uncommon in sporadic progressive external ophthalmoplegia with multiple mitochondrial DNA deletions.

The authors sequenced POLG1, C10ORF2, and ANT1 in 38 sporadic progressive external ophthalmoplegia patients with multiple mitochondrial DNA (mtDNA) deletions. Causative mutations were identified in approximately 10% of cases, with two unrelated individuals harboring a novel premature stop codon mutation (1356T>G). None had a mutation in C10ORF2 or ANT1. In the majority of patients, the primary nuclear genetic defect is likely to affect other unknown genes important for mtDNA maintenance.

Mitochondrial abnormalities in ageing macular photoreceptors.

PURPOSE: To evaluate somatic mitochondrial (mt)DNA mutations in the macula during ageing. METHODS: Ten 30-microm cryostat sections from the macula (foveal and perifoveal regions) and peripheral retina of 14 donors (aged 14-94 years) were cut for cytochrome c oxidase cytochemistry. The photoreceptor layer was microdissected and DNA extracted for 4977-bp mtDNA (mtDNA(4977)) quantification using PCR. Dual cytochemistry for cytochrome c oxidase and succinate dehydrogenase allowed the detection of cytochrome c oxidase-deficient cones. RESULTS: Findings showed a progressive accumulation of mtDNA(4977) from ages 14 to 94 years. From ages 14 to 60 years there was an increase from 0.006% to 0.25%, and from ages 60 to 94 years there was a steeper increase from 0.25% to 5.39%. Counts of cones in the dual-reacted preparations showed more cytochrome c oxidase-deficient cones in the foveal region than elsewhere. CONCLUSIONS: The results show that mitochondrial DNA deletions and cytochrome c oxidase-deficient cones accumulate in the ageing retina, particularly in the foveal region. These defects may contribute to the changes in macular function observed in ageing and age-related maculopathy.

[Molecular evolution of the Thr-Gly region of the period gene in Drosophila and some dipterans].

In this study, the molecular evolution of the Thr-Gly region of the period gene was characterized, using dipteran groups with close, medium, and long distance phylogenetic relationship. No sexual selection or other positive selection was found to be acting on the Thr-Gly region. The evolutionary rate of the Thr-Gly region in nasuta subgroup was 10.4 x 10(-9) synonymous substitution/site/year. The divergence time of the nasuta subgroup of Drosophila was estimated to be 1-3 mya. A phylogenetic tree of Drosophila genus was reconstructed, which is well supported by evidences from archaebiological and biogeographical studies, The molecular evolutionary pattern of Thr-Gly region was discussed.

[Chemokine and chemokine receptor gene families--a phylogenetic study].

In this study, the phylogenetic trees of chemokines and chemokine receptors are produced, based on distance parsimonious method, using available amino acid sequences from GenBank. The divergence of chemokine or chemokine receptors was earlier than the divergence of vertebrates. While the divergence of homologous genes from different species is in well congruent with phylogenetic relationship of those species. The molecular evolutionary rates of chemokine receptor genes are different, with CXCR4 gene scored the lowest. Chemokines and chemokine receptors originated from few ancient genes. The similarity between the virus encoded chemokines or chemokine receptors with those of host genes is a consequence of evolutionary mimicry.

[The effect of B chromosome on the reproduction of Drosophila albomicans].

By using three strains with different number of B chromosome (1-2Bs, 0B, > 2Bs) on the same genetic background, the effect of B chromosome on the reproduction of Drosophila albomicans was studied. Comparison of net reproduction and sex ratio among three strains showed that Bs has significantly effect on flies' net reproduction. The net reproduction of flies with 1-2Bs, 0B, > 2Bs is 196, 157, 147, respectively. Significant difference among three strains exists in the early stage of reproduction. The sex ratios of three strains are all close to 1:1, no significant difference was observed. The results indicated that lower dose of Bs enhances the flies' reproduction and fitness, while higher dose of Bs slightly reduces flies reproduction and fitness. These results lend the first strong support to the heterotic model.