ABSTRACT
OBJECTIVE: To investigate whether Naoxueshu Oral Liquid (NXS) could promote hematoma absorption in post-craniotomy hematoma (PCH) patients. METHODS: This is an open-label, multicenter, and randomized controlled trial conducted at 9 hospitals in China. Patients aged 18-80 years with post-craniotomy supratentorial hematoma volume ranging from 10 to 30 mL or post-craniotomy infratentorial hematoma volume less than 10 mL, or intraventricular hemorrhage following cranial surgery were enrolled. They were randomly assigned at a 1:1 ratio to the NXS (10 mL thrice daily for 15 days) or control groups using a randomization code table. Standard medical care was administered in both groups. The primary outcome was the percentage reduction in hematoma volume from day 1 to day 15. The secondary outcomes included the percentage reduction in hematoma volume from day 1 to day 7, the absolute reduction in hematoma volume from day 1 to day 7 and 15, and the change in neurological function from day 1 to day 7 and 15. The safety was closely monitored throughout the study. Moreover, subgroup analysis was performed based on age, gender, history of diabetes, and etiology of intracerebral hemorrhage (ICH). RESULTS: A total of 120 patients were enrolled and randomly assigned between March 30, 2018 and April 15, 2020. One patient was lost to follow-up in the control group. Finally, there were 119 patients (60 in the NXS group and 59 in the control group) included in the analysis. In the full analysis set (FAS) analysis, the NXS group had a greater percentage reduction in hematoma volume from day 1 to day 15 than the control group [median (Q1, Q3): 85% (71%, 97%) vs. 76% (53%, 93%), P<0.05]. The secondary outcomes showed no statistical significance between two groups, either in FAS or per-protocol set (P>0.05). Furthermore, no adverse events were reported during the study. In the FAS analysis, the NXS group exhibited a higher percentage reduction in hematoma volume on day 15 in the following subgroups: male patients, patients younger than 65 years, patients without diabetes, or those with initial cranial surgery due to ICH (all P<0.05). CONCLUSIONS: The administration of NXS demonstrated the potential to promote the percentage reduction in hematoma volume from day 1 to day 15. This intervention was found to be safe and feasible. The response to NXS may be influenced by patient characteristics. (Registration No. ChiCTR1800017981).
Subject(s)
Craniotomy , Hematoma , Humans , Male , Female , Hematoma/etiology , Middle Aged , Craniotomy/adverse effects , Aged , Adult , Drugs, Chinese Herbal/therapeutic use , Drugs, Chinese Herbal/administration & dosage , Drugs, Chinese Herbal/adverse effects , Aged, 80 and over , Adolescent , Young Adult , Administration, OralABSTRACT
PURPOSE: The relationship between serum phosphorus and immunoglobulin A (IgA) nephropathy progression remains uncertain, especially normal-range serum phosphorus. Therefore, we herein examined the relationship between the normal-range serum phosphorus and the progression of IgA nephropathy. METHODS: One hundred sixty-two patients with primary IgA nephropathy were divided into three groups according to tertiles of baseline serum phosphorus (first tertile: 0.73-1.04 mmol/L; second tertile: 1.04-1.21 mmol/L; third tertile: 1.21-1.60 mmol/L). Estimated glomerular filtration rate (eGFR) was calculated using the chronic kidney disease epidemiology collaboration. The composite outcome was defined as a decrease of at least 50% in eGFR from baseline or end-stage kidney disease (ESKD). The association of serum phosphorus with IgA nephropathy progression was estimated using Cox proportional hazards models, adjusting for potential confounders. RESULTS: During a median 16 month follow-up period, 15 patients reached a composite outcome. In the crude Cox proportional hazard model, baseline serum phosphorus as a continuous variable was associated with increased risk for adverse renal outcomes [hazard ratio (HR) = 63.510, 95% confidence interval (CI) = 3.953-1020.284, P = 0.003], and the high tertile of serum phosphorus group had an increased risk of the composite outcome by using the low tertile group as the reference (HR = 11.895, 95% CI = 1.522-92.993, P = 0.018). After adjustment for traditional risk factors, the high tertile of serum phosphorus group was significantly related to IgA nephropathy progression compared with the low tertile group (HR = 9.424, 95% CI = 1.019-87.165, P = 0.048). CONCLUSIONS: Relatively higher serum phosphorus levels within the normal range were significantly associated with the progression of IgA nephropathy.
Subject(s)
Glomerulonephritis, IGA , Kidney Failure, Chronic , Humans , Glomerulonephritis, IGA/complications , Retrospective Studies , Disease Progression , Kidney , Kidney Failure, Chronic/complications , Glomerular Filtration Rate , PhosphorusABSTRACT
Children aged 3-6 years undergo a critical stage of growth and development and are irreversibly affected by their iodine status. In order to reveal iodine status in preschool children, we detected iodine concentrations in urine samples from 1382 children aged 3-6 years based on a cross-sectional study. The median urinary iodine concentration (UIC) of children was 193.36 µg/L and was 336.96 µg/g·Cr corrected for creatinine. The study developed a link between dietary habits and iodine status, revealing that regular calcium supplement (OR: 1.79, (95% CI: 1.03, 3.12)) increased deficiency risk, while moderate seafood consumption (OR: 0.60, (95% CI: 0.38, 0.95)) decreased it. Additionally, modest intake of shellfish (OR: 0.58, (95% CI: 0.33, 1.00)), vegetables (OR: 0.61, (95% CI: 0.38, 0.97)), and eggs (OR: 0.53, (95% CI: 0.30, 0.95)) was found to protect against excess iodine. The findings underline the importance of balanced diets and various nutrients' roles in preschoolers' iodine status.
Subject(s)
Iodine , Humans , Child, Preschool , Cross-Sectional Studies , China , Nutrients , Seafood , Nutritional StatusABSTRACT
Large bone lead (Pb) resulting from high environmental exposure during childhood is an important source of endogenous Pb during pregnancy and lactation. Docosahexaenoic acid (DHA) attenuates Pb toxicity, however, the effect of DHA on bone Pb mobilisation during lactation has not been investigated. We aimed to study the effects of DHA supplementation during pregnancy and lactation on bone Pb mobilisation during lactation and its potential mechanisms. Weaning female rats were randomly divided into control (0.05% sodium acetate) and Pb-exposed (0.05% Pb acetate) groups, after a 4-week exposure by ad libitum drinking and a subsequent 4-week washout period, all female rats were mated with healthy males until pregnancy. Then exposed rats were randomly divided into Pb and Pb + DHA groups, and the latter was given a 0.14% DHA diet, while the remaining groups were given normal feed until the end of lactation. Pb and calcium levels, bone microarchitecture, bone turnover markers, mitochondrial function and serum metabolomics were analyzed. The results showed that higher blood and bone Pb levels were observed in the Pb group compared to the control, and there was a significant negative correlation between blood and bone Pb. Also, Pb increased trabecular bone loss along with slightly elevated serum C-telopeptide of type I collagen (CTX-I) levels. However, DHA reduced CTX-I levels and improved trabecular bone microarchitecture. Metabolomics showed that Pb affected mitochondrial function, which was further demonstrated in bone tissue by significant reductions in ATP levels, Na+-K+-ATPase, Ca2+-Mg2+-ATPase and CAT activities, and elevated levels of MDA, IL-1ß and IL-18. However, these alterations were partially mitigated by DHA. In conclusion, DHA supplementation during pregnancy and lactation improved bone Pb mobilisation and mitochondrial dysfunction in lactating rats induced by pre-pregnancy Pb exposure, providing potential means of mitigating bone Pb mobilisation levels during lactation, but the mechanism still needs further study.
Subject(s)
Docosahexaenoic Acids , Lactation , Humans , Pregnancy , Male , Rats , Animals , Female , Docosahexaenoic Acids/pharmacology , Lead/toxicity , Bone and Bones , Dietary Supplements , Adenosine TriphosphatasesABSTRACT
BACKGROUND: Several proteins in the tripartite-motif (TRIM) family are associated with the development of colorectal cancer (CRC), but research on the role of TRIM69 was lacking. The present study examined the correlation between TRIM69 expression and colon adenocarcinoma (COAD). METHODS: mRNA sequencing data for COAD patients was extracted from The Cancer Genome Atlas to analyze correlations between TRIM69 expression and patients' clinical features as well as survival. Potential associations with immune cells and chemosensitivity also were predicted using various algorithms in the TIMER, Limma, clusterProfiler, GeneMANIA, and Gene Set Cancer Analysis platforms. Subsequently, polymerase chain reaction analysis and immunohistochemical staining were used to detect TRIM69 expression in COAD tissue samples from real-world patients. RESULTS: TRIM69 expression was lower in COAD tissues than in normal tissues and correlated with the pathologic stage and metastasis (M category). Additionally, TRIM69 was found to be involved in several immune-related pathways, notably the NOD-like signaling pathway. These results suggest that high TRIM69 expression has the potential to enhance tumor sensitivity to 5-fluorouracil and programmed cell death protein 1 (PD-1) blockers. CONCLUSIONS: From our findings that TRIM69 expression was significantly reduced in COAD compared with non-cancer tissues and associated with pathologic stage and metastasis, we conclude that increasing TRIM69 expression and/or activity may help to improve therapeutic outcomes. Accordingly, TRIM69 represents a potentially valuable marker of metastasis and target for adjuvant therapy in COAD.
Subject(s)
Adenocarcinoma , Colonic Neoplasms , Humans , Colonic Neoplasms/drug therapy , Colonic Neoplasms/genetics , Fluorouracil/therapeutic use , Adenocarcinoma/drug therapy , Adenocarcinoma/genetics , Programmed Cell Death 1 Receptor , Algorithms , Tripartite Motif Proteins/genetics , Ubiquitin-Protein Ligases/geneticsABSTRACT
Despite the ubiquity and prevalence of lead (Pb) in the environment and industry, the mechanism of lead-induced neurotoxicity in the brain remains unclear, let alone its prevention and treatment. In this study, we hypothesized that exogenous cholesterol supplementation acts as an effective remedy for lead-induced neurodevelopmental impairments caused by lead. Forty 21-day-old male rats were randomly divided into four groups and administered 0.1 % lead water and/or 2 % cholesterol-containing feed for 30 d. Ultimately, rats in the lead group lost weight, accompanied by spatial learning and memory impairments as verified by the Morris water maze test, in which the escape latency of rats was prolonged, and the number of crossings in the target platform and the residence time in the target quadrant were significantly diminished compared to the control group. Hematoxylin-Eosin (H&E) staining and Nissl staining illustrated that typical pathological morphology occurred in the brain tissue of the lead group, where the tissue structure was loose, the number of hippocampal neurons and granulosa cells decreased significantly and were arranged loosely, along with enlarged intercellular space, light matrix staining, and decline in Nissl bodies. In addition, inflammatory response and oxidative stress were significantly induced by lead. Immunofluorescence experiments showed apparent activation of astrocytes and microglia, followed by the enhancement of TNF-α and IL-ß levels. Moreover, the MDA content in the lead group was elevated dramatically, whereas the activities of SOD and GSH were significantly inhibited. As for the mechanism, western blot and qRT-PCR experiments were performed, where lead could significantly inhibit the BDNF-TrkB signaling pathway, lowering the protein expression of BDNF and TrkB. Cholesterol metabolism was also affected by lead exposure, in which cholesterol metabolism-related protein expression and gene transcription, including SREBP2, HMGCR, and LDLR, were downregulated. However, cholesterol supplementation efficiently detoxified the negative effects of lead-induced neurotoxicity, reversing the inflammatory response, oxidative stress, inactivation of the BDNF signaling pathway, and imbalance of cholesterol metabolism, thus improving the learning and memory ability of rats. In brief, our study demonstrated that cholesterol supplementation could ameliorate the deficiency of learning and memory induced by lead, which is closely associated with the initiation of the BDNF/TrkB signaling pathway and regulation of cholesterol metabolism.
Subject(s)
Brain-Derived Neurotrophic Factor , Lead , Female , Rats , Animals , Male , Rats, Sprague-Dawley , Brain-Derived Neurotrophic Factor/genetics , Brain-Derived Neurotrophic Factor/metabolism , Lead/metabolism , Signal Transduction , Hippocampus/metabolism , Dietary Supplements , Maze LearningABSTRACT
New anti- Toxoplasma gondii agents are in demand due to the emergence of high toxicity. Ginseng polysaccharides and saponins can be used to treat the replication of Toxoplasma gondii in an attempt to determine whether the medicinal uses of ginseng are supported by pharmacological effects. Anti- Toxoplasma gondii activities of ginseng polysaccharides and saponins were examined in vitro and in vivo. The findings are the survival time and rate of Toxoplasma gondii infected mice after the intake of the total polysaccharides and saponins increased compared to untreated control mice. The survival rate of mice treated with ginseng saponins was the highest at 83.3%, the phenomenon of splenomegaly of mice was decreased especially ( p < 0.05) treated with ginseng polysaccharides. Accordingly, ginseng polysaccharides and saponins have a potential application in anti-Toxoplasma gondii treatments.
Subject(s)
Panax , Saponins , Toxoplasma , Animals , Mice , Saponins/pharmacology , Polysaccharides/pharmacologyABSTRACT
Molecular pharmacognosy( MP) is a new interdisciplinary science,which integrates the pharmacognosy and molecular biology,and focuses on the crude drugs' classification and identification,cultivation and protection,and production of active ingredients at the molecular level. Pogostemon cablin is one of the ten major southern medicines in China,MP research on this famous herb has developed on the basis of traditional research methods,and achieved certain results. This article summarized the MP research achievements of P. cablin in recent years,the prospect of this field is also discussed to provide references for the protection,development and utilization of P. cablin resources.
Subject(s)
Lamiaceae , Pharmacognosy , Pogostemon , China , Molecular BiologyABSTRACT
OBJECTIVE: To compare the therapeutic effect of thermosensitive moxibustion (TSM) and medication in the treatment of insomnia patients with the syndrome of stagnation of liver-qi. METHODS: A total of 60 insomnia patients with the syndrome of liver-qi stagnation were randomly divided into TSM group and medication group (n ï¼ 30 in each). Mild moxibustion was applied to bilateral Taichong (LR 3) and Qiuxu (GB 40) alternatively till the patient experienced an intense warmth (diathermic, heat transmission, etc.) feeling in the local region. The treatment was conducted once daily for 15 d. Patients of the medication group were ordered to take Estazolam tablets (1 mg/d) 1 h before sleeping, once daily for successive 15 days. The sleep quality (sleeping quality, falling asleep time, sleep duration, sleep efficiency, sleep disorders, hyponotic and day time dysfunction, 0ï¼21 points) was evaluated by using Pittsburgh Sleep Quality Index (PSQI). The therapeutic effect was assessed in accordance with the "Guide Principles for Clinical Trials on New Drugs of Chinese Materia Medica (1993)" and international united sleep efficiency value. RESULTS: Following the treatment, the PSQI of both groups were significantly decreased relevant to their own pre-treatment (P<0.05), but without significant difference between the two groups (P>0.05). Of the two 30 cases in the medication and moxibustion groups, 12 (40.00%) and 20 (66.67%) had marked improvement, 7 (23.33%) and 6 (20.00%) were effective, and 11(36.67%) and 4 (13.33%) were invalid, with the effective rates being 63.33 % (19/30) and 86.67% (26/30), respectively. The effective rate of the TSM group was significantly higher than that of the medicine group (P <0.05). CONCLUSION: Thermosensitive moxibustion applied to the source points of the Liver and Gallbladder Meridians can improve the quality of sleep in insomnia patients with syndrome of liver-qi stagnation.
Subject(s)
Acupuncture Therapy , Moxibustion , Sleep Initiation and Maintenance Disorders , Acupuncture Points , Humans , Liver , Qi , Sleep Initiation and Maintenance Disorders/therapy , Treatment OutcomeABSTRACT
OBJECTIVE: To study hypoglycemic effects of different mulberry leaf extracts on diabetic mice. METHODS: STZ-induced diabetic mice were intragastricly administrated with different mulberry leaf extracts( water extracts: 800 mg/kg, ethanol extracts: 500 mg/kg, water extracts + ethanol extracts: low dose 150 mg/kg, high dose300 mg/kg) and positive control group( melbine: 227. 5 mg/kg). Four weeks later, serum glucose levels, insulin levels, antioxidase activities were tested. Liver and pancreas pathological changes were observed by HE staining. RESULTS: Compared with model group, each mulberry leaf extracts group could decrease serum glucose and insulin levels and increase antioxidase activities. The mixture of water extracts and ethanol extracts at high dose showed the most obvious effects. In this group, serum glucose levels, insulin levels, insulin resistance index and insulin sensitivity index were 61. 0%, 64. 1%, 42. 9% and 1. 18 times of those in the model group( P < 0. 05), and no significant differences were found between this group and the positive group( P > 0. 05). CONCLUSION: The mixture of mulberry leaf water and ethanol extracts showed synergistic hypoglycemic effects by increasing antioxidase activities, repairing pancrea and liver oxidative damages, and improving insulin resistance status.
Subject(s)
Blood Glucose/drug effects , Diabetes Mellitus, Experimental/drug therapy , Hypoglycemic Agents/therapeutic use , Plant Extracts , Plant Leaves/chemistry , Animals , Insulin , Insulin Resistance , Mice , MorusABSTRACT
PURPOSE: Systemic failure remains the major challenge in management of locally advanced rectal cancer (LARC). To optimize the timing of neoadjuvant treatment and enhance systemic control, we initiated a phase 2 trial to evaluate a new strategy of neoadjuvant sandwich treatment, integrating induction chemotherapy, concurrent chemoradiation therapy, and consolidation chemotherapy. Here, we present preliminary results of this trial, reporting the tumor response, toxicities, and surgical complications. METHODS AND MATERIALS: Fifty-one patients with LARC were enrolled, among which were two patients who were ineligible because of distant metastases before treatment. Patients were treated first with one cycle of induction chemotherapy consisting of oxaliplatin, 130 mg/m² on day 1, with capecitabine, 1000 mg/m² twice daily for 14 days every 3 weeks (the XELOX regimen), followed by chemoradiation therapy, 50 Gy over 5 weeks, with the modified XELOX regimen (oxaliplatin 100 mg/m²), and then with another cycle of consolidation chemotherapy with the XELOX regimen. Surgery was performed 6 to 8 weeks after completion of radiation therapy. Tumor responses, toxicities, and surgical complications were recorded. RESULTS: All but one patent completed the planned schedule of neoadjuvant sandwich treatment. Neither life-threatening blood count decrease nor febrile neutropenia were observed. Forty-five patents underwent optimal surgery with total mesorectal excision (TME). Four patients refused surgery because of clinically complete response. There was no perioperative mortality in this cohort. Five patients (11.1%) developed postoperative complications. Among the 45 patients who underwent TME, pathologic complete response (pCR), pCR or major regression, and at least moderate regression were achieved in 19 (42.2%), 37 (82.2%), and 44 patients (97.8%), respectively. CONCLUSIONS: Preliminary results suggest that the strategy of neoadjuvant sandwich treatment using XELOX regimen as induction, concomitant, and consolidation chemotherapy to the conventional radiation is well tolerated. The strategy is highly effective in terms of pCR and major regression, which warrants further investigation.
Subject(s)
Adenocarcinoma/drug therapy , Adenocarcinoma/radiotherapy , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Consolidation Chemotherapy/methods , Induction Chemotherapy/methods , Neoadjuvant Therapy/methods , Rectal Neoplasms/drug therapy , Rectal Neoplasms/radiotherapy , Adenocarcinoma/pathology , Adenocarcinoma/surgery , Adult , Aged , Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Capecitabine , Chemotherapy, Adjuvant/adverse effects , Chemotherapy, Adjuvant/methods , Consolidation Chemotherapy/adverse effects , Deoxycytidine/administration & dosage , Deoxycytidine/adverse effects , Deoxycytidine/analogs & derivatives , Feasibility Studies , Female , Fluorouracil/administration & dosage , Fluorouracil/adverse effects , Fluorouracil/analogs & derivatives , Humans , Induction Chemotherapy/adverse effects , Male , Middle Aged , Neoadjuvant Therapy/adverse effects , Oxaloacetates , Prospective Studies , Rectal Neoplasms/pathology , Rectal Neoplasms/surgeryABSTRACT
BACKGROUND AND PURPOSE: Little information is available on the effects of age on health care and outcomes of ischemic stroke (IS) in China. Our aim was to evaluated risk factors, health care, and outcomes among age groups including ≤ 45, 46-65, 66-79, and ≥ 80 years and to find whether the outcome was affected by age and health care. METHODS: CNSR is a nationwide prospective registry for patients admitted with acute stroke and prospectively followed up 12-month outcomes. Demographics, socioeconomics, risk factors, health care, and outcomes were analyzed among age groups, and multivariate regression analysis was used to determine the association of outcome and age and health care. RESULTS: We identified 12,415 acute IS patients for analysis. Of 1179 (9.50%) were aged ≥ 80 years. In terms of risk factors, cardiac diseases were significantly more frequent in patients ≥ 80 years, behavioral risk factors were more common in younger patients, and hypertension, hyperlipidemia, and diabetes were more seen in 46-79 patients. The use of health care varied among groups and was significantly lower in ≥ 80 years especially in secondary prevention. The very old patients had the worst outcomes even after adjusting by prognostic factors; however, adjusting forward by health care, the extent of differences decreased. CONCLUSIONS: In CNSR, differences in stroke clinic characteristics and health care were observed among various age groups, and the old patients, receiving lower levels of stroke care, had the worst outcomes. Knowledge of the age differences in ischemic stroke may be helpful to appropriately allocate the limited health resources and to improve stroke outcomes.
Subject(s)
Aging , Brain Ischemia/complications , Brain Ischemia/epidemiology , Delivery of Health Care/methods , Outcome Assessment, Health Care , Stroke/epidemiology , Adolescent , Adult , Age Factors , Aged , Aged, 80 and over , China , Female , Follow-Up Studies , Humans , Male , Middle Aged , National Health Programs/statistics & numerical data , Registries , Risk Factors , Severity of Illness Index , Statistics, Nonparametric , Stroke/etiology , Young AdultABSTRACT
The distant heat induced by suspended moxibustion (SM) for 40 min is confirmed to have a favorable effect in treating diseases such as ischemic brain injury in the clinical setting, but its precise mechanism remains to be explained. Since a similar reaction to the phenomenon of distant heat is found in some transient middle cerebral artery occlusion (tMCAO) rats treated by a 40-min SM session with tail temperature increase (TTI), we hereby study its mechanism by comparing the neuroprotective effect of 40 min's SM with TTI to those without. The experimental results show that 40 min's SM with TTI can significantly reduce the infarct volume and neurological deficit score in tMCAO rats. Western blot demonstrates that a reduction in the levels of cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS) expression in tMCAO rats with TTI is more striking than that of the rats without TTI. The expression of caspase-3 protein is inhibited in tMCAO rats with TTI. The results suggest that the efficacy of SM for 40 min with TTI is higher than that without. Although neuroprotective effects present in tMCAO rats with and without TTI, those with TTI revealed a higher level of anti-inflammation effect and exhibited an anti-apoptosis effect.
Subject(s)
Body Temperature/physiology , Moxibustion/methods , Stroke/therapy , Animals , Apoptosis/physiology , Blotting, Western , Caspase 3/biosynthesis , Caspase Inhibitors , Cerebrovascular Circulation , Cyclooxygenase 2/biosynthesis , Cyclooxygenase 2 Inhibitors/pharmacology , Infarction, Middle Cerebral Artery/pathology , Infarction, Middle Cerebral Artery/therapy , Inflammation/metabolism , Male , Nitric Oxide Synthase Type II/antagonists & inhibitors , Nitric Oxide Synthase Type II/biosynthesis , Rats , Rats, Sprague-Dawley , Stroke/pathology , Subarachnoid Hemorrhage/pathology , Subarachnoid Hemorrhage/therapy , Tail/physiologyABSTRACT
Novel diselenide-linked porphyrin dimers were synthesized under phase-transfer catalysis conditions. The targeted compounds were characterized by (1)H-NMR, high-resolution mass spectrometry, UV/VIS and fluorescence spectroscopies, redox-potential measurements, and elemental analysis. The interaction of the title compounds with DNA was studied using UV/VIS, fluorescence, and circular dichroism (CD) spectroscopies. The relative rates of singlet-oxygen production from the diselenide-linked porphyrin dimers upon photoirradiation were also measured.
Subject(s)
DNA/chemistry , Porphyrins/chemical synthesis , Selenium/chemistry , Catalysis , Dimerization , Oxidation-Reduction , Porphyrins/chemistry , Singlet Oxygen/chemistryABSTRACT
The effects of Toki-shakuyaku-san (TSS) ingredients on acetylcholine (ACh) release in the dorsal hippocampus (DH) were investigated in intact and twice-repeated ischemic rats using in vivo microdialysis-HPLC. Moreover, the effect of TSS on blood flow was investigated in intact rats using laser Doppler flowmetry. TSS at 300 mg/kg p.o. increased ACh and blood flow after 40 min in intact rats. TSS also increased ACh in ischemic rats but to a lesser extent than in intact rats. These results could suggest that TSS-increased ACh and blood flow in DH may contribute in the cognition improving property of TSS.
Subject(s)
Acetylcholine/biosynthesis , Drugs, Chinese Herbal/pharmacology , Hippocampus/blood supply , Hippocampus/metabolism , Phytotherapy , Plants, Medicinal , Animals , Blood Flow Velocity , Brain Ischemia , Drugs, Chinese Herbal/administration & dosage , Drugs, Chinese Herbal/therapeutic use , Laser-Doppler Flowmetry , Male , Pulsatile Flow , Rats , Rats, WistarABSTRACT
The binding of newly compounded perseleno diphenyl 2,2'-diformic acid to bovine serum albumin(BSA) was studied at different temperatures using fluorescence spectrum and UV spectrum. The fluorescence quenching data was analyzed according to Stern-Volmer equation and Lineweaver-Burk double-reciprocal equation. It was showed that this quenching complies better with the charactristic of static fluorescence quenching. The binding constant, thermodynamic parameters, and the binding spot of the compound with certain structure, coming from perseleno diphenyl 2,2'-diformic acid and bovine serum albumin, were obtained. Besides, themechanism of static fluorescence quenching and the quality of binding power were both discussed. The information of the binding mode, the mechanism of its transportation, and some medical theories in human body were offered.
Subject(s)
Organometallic Compounds/chemistry , Organoselenium Compounds/chemistry , Selenium/chemistry , Serum Albumin, Bovine/chemistry , Thermodynamics , Algorithms , Animals , Cattle , Fluorescence , Humans , Kinetics , Models, Chemical , Molecular Structure , Organometallic Compounds/metabolism , Organoselenium Compounds/metabolism , Protein Binding , Serum Albumin, Bovine/metabolism , Spectrometry, Fluorescence , Spectrophotometry, Ultraviolet , TemperatureABSTRACT
Previously we have reported that Toki-shakuyaku-san (TSS) ameliorated the impairment of spatial memory induced by single cerebral ischemia (1 x 10 minutes) and scopolamine, a muscarinic receptor antagonist. In this experiment, we studied the effect of TSS on repeated cerebral ischemia (2 x 10 minutes, 1-hour interval) induced impairment of spatial memory and neuronal injury in rats. The 8-day post-ischemic treatment with TSS (30-300 mg/kg) was administered p.o. once per day. TSS dose-dependently prevented the impairment of spatial memory, neuronal death and TUNEL positive cells induced by repeated cerebral ischemia. In order to determine the mechanism of TSS, we also studied the effect of TSS on GluR2 mRNA, one of the glutamate alpha-amino-3-hydroxy-5-methyl-4-isoxazole (AMPA) receptor subunits. Repeated cerebral ischemia significantly decreased GluR2 flop mRNA at 1 and 3 days after the occlusion. TSS (300 mg/kg) significantly suppressed the decrease in GluR2 flop at 3 days after repeated cerebral ischemia. These results suggested that the TSS has neuroprotective action which may be indirectly mediated by the AMPA receptor, and TSS may be beneficial for the treatment of cerebrovascular dementia.