Regulation of CeA-Vme projection in masseter hyperactivity caused by restraint stress.

The overactivity of the masticatory muscles (bruxism or teeth clenching) is associated with stress exposure, and often leading to consistent muscle pain. However, the neural mechanism underlining it is not fully understood. The central amygdala (CeA), which is linked to stress-induced behaviors and physical reactions, projects directly to the mesencephalic trigeminal nucleus (Vme), which is crucial for oral-motor coordination.

Dexamethasone alleviates etomidate-induced myoclonus by reversing the inhibition of excitatory amino acid transporters.

Background: Etomidate can induce myoclonus with an incidence of 50 ~ 85% during anesthesia induction. Dexamethasone, as a long-acting synthetic glucocorticoid, has neuroprotective effects. However, the effects of dexamethasone on the etomidate-induced myoclonus remain uncertain.

Locus coeruleus activation contributes to masseter muscle overactivity induced by chronic restraint stress in mice.

It is commonly accepted that exposure to stress may cause overactivity in the orofacial muscles, leading to consistent muscle pain, which is the main symptom of temporomandibular disorders. The central neural mechanism underlying this process, however, remains unclear. The locus coeruleus is considered to play an important role in stress-related behavioral changes.

Minimal alveolar concentration of sevoflurane in combination with remimazolam in adults during laryngeal mask insertion: an up-down sequential allocation study.

Background: Remimazolam is a novel ultrashort-acting intravenous benzodiazepine sedative-hypnotic. The combination of remimazolam and sevoflurane does not increase respiratory sensitivity, produce bronchospasm, or cause other adverse conditions. We aimed to observe the effects of different remimazolam doses on the minimum alveolar concentration (MAC) of sevoflurane at end-expiration during laryngeal mask insertion and evaluate the effect of sex on the efficacy of the combination of remimazolam on the suppression of laryngeal mask insertion in adult patients.

Minimal alveolar concentration of sevoflurane in combination with dexmedetomidine in patients with hysteroscopy: An up-down sequential allocation study.

Background: Dexmedetomidine is commonly used in hysteroscopy surgery due to its analgesia and sedation without respiratory depression. Many studies have shown that dexmedetomidine can reduce the consumption of sevoflurane. However, the optimal end-tidal concentration of sevoflurane when it is co-administered with dexmedetomidine has not been established.

Effects of berberine hydrochloride on immune response in the crab Charybdis japonica.

Berberine hydrochloride is the main effective component of Coptis spp. used in Chinese herbal medicine and its underlying molecular mechanisms, responsible for inducing effects in crustacean species, are not fully understood. In this study, the molecular response of the crab Charybdis japonica to berberine hydrochloride exposure was studied using transcriptome sequencing.

Effects of different plasma target concentrations of remifentanil on the MAC of sevoflurane in children with laparoscopic surgery.

Background: To investigate the effects of different plasma target concentrations of remifentanil on the minimum alveolar concentration (MAC) for blocking adrenergic response (BAR) of sevoflurane in children with laparoscopic herniorrhaphy.

Methods: Seventy-five children with 3-7 years old scheduled for laparoscopic herniorrhaphy were randomly divided into group R, group R and group R according to different remifentanil plasma target concentration (0, 1, and 2 ngml), respectively. The MAC of sevoflurane was determined by the up-and-down and sequential method in each group.

Effects of different remifentanil target concentrations on MAC of sevoflurane in patients with liver dysfunction under carbon dioxide pneumoperitoneum stimulus: A randomized controlled trial.

What Is Known And Objective: Remifentanil can effectively decrease the sevoflurane concentration to block sympathetic adrenergic response to CO pneumoperitoneum stimulus,and liver dysfunction will significantly reduce the MAC (minimum alveolar concentration for blocking adrenergic response) of sevoflurane. However, the effects of different remifentanil concentrations on the MAC of sevoflurane in patients with liver dysfunction are unclear. The aim of this study was to observe the effects of different remifentanil concentrations by intravenous target-controlled infusion on the MAC of sevoflurane in patients with grade B liver dysfunction under carbon dioxide pneumoperitoneum stimulus.

Acetyl-11-keto-β-boswellic acid suppresses docetaxel-resistant prostate cancer cells in vitro and in vivo by blocking Akt and Stat3 signaling, thus suppressing chemoresistant stem cell-like properties.

Acquired docetaxel-resistance of prostate cancer (PCa) remains a clinical obstacle due to the lack of effective therapies. Acetyl-11-keto-β-boswellic acid (AKBA) is a pentacyclic triterpenic acid isolated from the fragrant gum resin of the Boswellia serrata tree, which has shown intriguing antitumor activity against human cell lines established from PCa, colon cancer, malignant glioma, and leukemia. In this study, we examined the effects of AKBA against docetaxel-resistant PCa in vitro and in vivo as well as its anticancer mechanisms.

Changes in mast cell infiltration: a possible mechanism in detrusor overactivity induced by visceral hypersensitivity.

Objective: To establish the detrusor overactivity (DO) model induced by visceral hypersensitivity (VH) and investigate the relationship between mast cell (MC) infiltration and DO.

Materials And Methods: Sixty rats are divided into 4 groups randomly: Group 1:Baseline group; Group 2: DO group; Group 3: CON group; Group 4: VH group. The colorectal distension (CRD) and abdominal withdral reflex (AWR) scores are performed to evaluate VH.

Jungermannenone A and B induce ROS- and cell cycle-dependent apoptosis in prostate cancer cells in vitro.

Aim: Jungermannenone A and B (JA, JB) are new ent-kaurane diterpenoids isolated from Chinese liverwort Jungermannia fauriana, which show anti-proliferation activities in cancer cells. In this study we investigated the mechanisms underlying the anticancer action of JA and JB in PC3 human prostate cancer cells in vitro.

Methods: A panel of 9 human cancer cell lines was tested.

Notolutesins A-J, dolabrane-type diterpenoids from the Chinese liverwort Notoscyphus lutescens.

Ten new dolabrane-type diterpenoids, notolutesins A-J (1-10), were isolated from the Chinese liverwort Notoscyphus lutescens, along with four known compounds. The structures of the new compounds were established on the basis of extensive spectroscopic data, and that of 1 was confirmed by single-crystal X-ray crystallography. The absolute configuration of 1 was determined by comparing its experimental and calculated electronic circular dichroism spectra.

Diterpenoids from the Chinese liverwort Heteroscyphus tener and their antiproliferative effects.

Four new ent-labdane diterpenoids, heteroscyphins A-D (1-4), and four known diterpenoids (5-8) were isolated from the Chinese liverwort Heteroscyphus tener (Steph.) Schiffn. The absolute configuration of compound 1 was defined by single-crystal X-ray diffraction using Cu Kα radiation.

Cembrane-type diterpenoids from the Chinese liverworts Chandonanthus hirtellus and C. birmensis.

Six new cembrane-type diterpenoids (1-6) were isolated from two species of Chandonanthus: Chandonanones A, B, and D-F (1, 2, and 4-6) were isolated from C. hirtellus, and chandonanones B, C, E, and F (2, 3, 5, and 6) from C. birmensis.

[Discussion on the quality marker of rehmanniae radix praeparata in the Chinese Pharmacopoeia].

Objective: In the Chinese Pharmacopoeia (2010 edition), the minimum limit of verbascoside (acteoside) in Rehmanniae Radix Praeparata (RRP) was set at 0.20%, the rationality of the standard was evaluated in this paper.

Methods: 10 samples of Rehmanniae Radix (RR) and RRP were collected or prepared.

[The application of three methods combined for extracting DNA from human epithelium].

Objective: To improve DNA extraction from human epithelium.

Methods: Chelex-100, Chelex-100 organic combined and Chelex-100 magnetism pearl combined methods were adopted according to the situation of each case.

Results: With the stepwise extracting protocol, the trace amount of DNA was analyzed most efficiently and the success rate of DNA extracting was better improved.

[Effects of blockage of hypothalamic-pituitary-adrenal cortex axis by metyrapone and Jiawei Xiaoyao Pills on immune system in mice exposed to chronic emotional stress].

Objective: To explore the effects of Jiawei Xiaoyao Pills (JWXYP) on immune system of mice exposed to chronic emotional stress, and to compare its effects with blockage of hypothalamic-pituitary-adrenal cortex axis (HPAA) by metyrapone.

Methods: Eighty male mice were randomly divided into eight groups: normal saline-treated group, normal saline-treated stress group, JWXYP-treated group, JWXYP-treated stress group, metyrapone-treated group, metyrapone-treated stress group, metyrapone and JWXYP-treated group and metyrapone and JWXYP-treated stress group. A box of electrical shock was used to induce chronic emotional stress in mice.

Effects of Radix Puerariae flavones on liver lipid metabolism in ovariectomized rats.

Aim: To study the effects of Radix Puerariae flavones (RPF) on liver lipid metabolism in ovariectomized (OVX) rats.

Methods: Forty adult female Wistar rats were randomly divided into four groups: OVX group; sham-OVX group; OVX+estrogen group and OVX+RPF group. One week after operation rats of the first two groups were treated with physiological saline, rats of OVX+estrogen group with estrogen (1 mg/kg.