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1.
J Psychiatr Res ; 165: 140-149, 2023 09.
Article in English | MEDLINE | ID: mdl-37499485

ABSTRACT

OBJECTIVE: Insomnia is a common sleep disorder. There are many clinical-intervention methods for treating this condition, but thus far, the most effective method has not been determined. METHODS: We conducted a network meta-analysis by including random evidence of insomnia improvement in people over 18 years old, without other physical diseases. From January 1, 1990 to June 15, 2022, we searched multiple electronic databases for randomized controlled trials of different insomnia-related, clinical-intervention methods. R software was used to analyze 10 indices, in order to evaluate the effect of sleep improvement. Primary outcomes comprised Pittsburgh sleep quality-index (PSQI) scores and insomnia severity-index (ISI) scores. RESULTS: Finally, 122 randomized controlled trials were included in our study. For the PSQI scores, we found the sequence of intervention measures by effect to be as follows: electroacupuncture, acupuncture, repetitive transcranial magnetic stimulation (rTMS), essential oils, herbal medicine, traditional Western medicine, Tai Chi and Baduanjin, music, supplements, cognitive behavioral therapy for insomnia (CBT-I), and exercise. The results for ISI were similar to those for PSQI, but with slight differences. CONCLUSION: Our research results indicate that various measures have a certain effect on improving sleep, among which the effect of instruments is more prominent. The curative effect of placebo groups was better than that of blank control groups. There is essentially no statistical difference in detailed classification within the same intervention category.


Subject(s)
Acupuncture Therapy , Electroacupuncture , Sleep Initiation and Maintenance Disorders , Humans , Adult , Adolescent , Sleep Initiation and Maintenance Disorders/therapy , Network Meta-Analysis , Sleep , Randomized Controlled Trials as Topic
2.
J Nephrol ; 36(5): 1401-1407, 2023 06.
Article in English | MEDLINE | ID: mdl-37060438

ABSTRACT

OBJECTIVE: The pathological types and long-term prognosis of glomerular diseases related to mercury exposure are unclear. This study retrospectively examined 41 cases of glomerulonephropathy caused by mercury-containing cosmetics. METHODOLOGY: Forty-one subjects with glomerular diseases presumably caused by mercury-containing cosmetics were selected. Clinical features, kidney biopsy, treatment, and follow-up data were collected. RESULTS: All patients were female with an average age of 39.4 ± 6.6 years at diagnosis. Median time of exposure to mercury-containing cosmetics was six months, and average urine mercury level was 66.80 ± 38.55ug/(g·Cr). Most patients presented with nephrotic syndrome. Renal histopathology showed membranous nephropathy in 22 patients (53.65%), minimal change disease in 13 patients (31.71%), IgA nephropathy with minimal change disease in 5 patients (12.20%), and focal segmental glomerulosclerosis in 1 patient. Median time of exposure to mercury was longer and the proportion of patients with autoantibodies (mainly antinuclear antibodies) was higher in patients with membranous nephropathy. Both blood phospholipase A2 receptor -Ab and kidney tissue phospholipase A2 receptor were negative. Thirty-six patients received glucocorticosteroids and/or immunosuppressants. Five patients were treated with an angiotensin receptor blocker, and nine patients were treated with chelation therapy. The median follow-up time was 40 months (range 27-94). All patients achieved complete remission, and the median time to complete remission was one month. They all successfully discontinued the drugs without relapsing; withdrawal time was 26 months. CONCLUSION: Membranous nephropathy was the most common pathological type in mercury-induced glomerular disease. Patients were sensitive to glucocorticosteroids and immunosuppressants and achieved complete remission quickly. Contrary to primary glomerulonephritides, patients with mercury-induced glomerular diseases had no relapses after withdrawal of the mercury containing cosmetics.


Subject(s)
Cosmetics , Glomerulonephritis, IGA , Glomerulonephritis, Membranous , Mercury , Nephrosis, Lipoid , Humans , Female , Adult , Middle Aged , Male , Mercury/adverse effects , Glomerulonephritis, Membranous/chemically induced , Glomerulonephritis, Membranous/diagnosis , Glomerulonephritis, Membranous/drug therapy , Nephrosis, Lipoid/pathology , Retrospective Studies , Receptors, Phospholipase A2 , Cosmetics/adverse effects , Prognosis , Glomerulonephritis, IGA/pathology , Immunosuppressive Agents/adverse effects
3.
Biomed Pharmacother ; 155: 113656, 2022 Nov.
Article in English | MEDLINE | ID: mdl-36116251

ABSTRACT

BACKGROUND: Gestational diabetes mellitus (GDM) is characterized by insulin resistance during pregnancy, and it is always combined with serious complications. Dendrobium mixture (DMix) is a kind of traditional Chinese medicine, and it has been proved to be an effective treatment for diabetes. However, the regulatory role of DMix in GDM remains elusive. METHODS: High fat feed combined with streptozotocin injection and high glucose medium were used to establish GDM animal and cell models, respectively. The levels of blood glucose, blood lipid, and insulin were measured with commercial kits. Western blotting was used to detect protein expression. RESULTS: DMix improved pancreas and placenta injury in GDM rats. DMix reversed the influence of GDM on the levels of SOD, MDA, and glutathione in the serum. Hyperglycemia and hyperlipidemia in GDM rats were suppressed by DMix. The activation of MAPK and inhibition of Nrf2/HO1 in GDM animal and cell models were reversed by DMix. The increase of ROS intensity, apoptosis, and inflammation factors in HG treated cells were reversed by DMix. CONCLUSION: This research proved that DMix improved GDM through inhibiting oxidative condition, inflammation factors, hyperglycemia and hyperlipidemia. This study might provide a novel thought for the prevention and treatment of GDM.


Subject(s)
Dendrobium , Diabetes, Gestational , Hyperglycemia , Animals , Female , Humans , Pregnancy , Rats , Blood Glucose , Diabetes, Gestational/drug therapy , Diabetes, Gestational/metabolism , Glutathione/pharmacology , Inflammation , Insulin/metabolism , NF-E2-Related Factor 2/metabolism , Reactive Oxygen Species , Signal Transduction , Streptozocin/pharmacology , Superoxide Dismutase/metabolism
4.
Front Endocrinol (Lausanne) ; 13: 876657, 2022.
Article in English | MEDLINE | ID: mdl-35784546

ABSTRACT

Background: Latent autoimmune diabetes in adults (LADA) is a heterogeneous form of diabetes, characterized by autoimmune destruction of pancreatic ß-cells as well as insulin resistance and is triggered by environmental factors in the context of genetic susceptibility. Berberine (BBR), a small alkaloid isolated from medicinal plants, has antidiabetic, anti-inflammatory, and antibacterial effects. Inulin is a common prebiotic that has been shown to improve glycemic control, alter the gut microbiota and suppress inflammation. The primary purpose of this study was to evaluate the effects of oral BBR and inulin combined with insulin therapy on diabetes care in patients with LADA. Methods and Analysis: We will conduct a single-center, prospective, randomized, double-blind, placebo-controlled trial. A total of 240 patients with LADA who have started insulin therapy will be randomly allocated either to the intervention or control group. After a 1-week run-in period, they will complete a 3-month treatment of BBR alone, inulin plus BBR, inulin alone, or placebo. Anthropometric and clinical data will be collected at five time points: baseline, 3 months, 6 months, 9 months, and 12 months from baseline. The primary outcome was the change in glycated hemoglobin levels. Dynamic blood glucose parameters, ß-cell function, and gut microbiota, as well as adverse events and quality of life will be monitored. Discussion: Glycemic control is critical for preventing the progression of diabetes. Although insulin is a recommended treatment for patients with LADA, there are currently no drugs that can effectively prevent the progressive destruction of pancreatic ß-cells or maintain their function. Several studies have found that when berberine and prebiotics are used alone, they have beneficial metabolic effects. This clinical research protocol will assess the efficacy of the combined treatment of berberine plus inulin and provide new ideas for future pharmacological research and clinical practices in diabetes care and glycemic control for LADA patients. Ethics and Dissemination: This study has been approved by the Ethics Committee of National Clinical Research Center of the Second Xiangya Hospital of Central South University (approval number: 2021-046). Clinical Trial Registration: ClinicalTrials.gov, identifier NCT04698330.


Subject(s)
Berberine , Diabetes Mellitus, Type 1 , Glucose Intolerance , Latent Autoimmune Diabetes in Adults , Adult , Berberine/therapeutic use , Diabetes Mellitus, Type 1/drug therapy , Humans , Insulin , Inulin/therapeutic use , Prospective Studies , Quality of Life , Randomized Controlled Trials as Topic
5.
Front Med (Lausanne) ; 9: 918812, 2022.
Article in English | MEDLINE | ID: mdl-35774994

ABSTRACT

Background: Despite significant progress in treating methanol poisoning, the lack of training, hazard communication, and occupational safety protection education contributes to the risk of occupational exposure and methanol toxicity. In addition, early diagnosis and timely medical care are essential to reduce the risk of morbidity and mortality, yet it remains a challenging procedure. Case Report: A 35-year-old man working in a fireworks factory came to our emergency department with acute mental change and progressive disturbance of consciousness. The patient's vital signs were stable, and he presented with enlargement of both pupils with a weak reaction to light. Head computed tomography showed low signal intensities in the bilateral basal ganglia. He was admitted to the neurologic intensive care unit, where additional laboratory workup showed high anion-gap metabolic acidosis. Methanol poisoning was thus considered. Before being treated with sodium bicarbonate infusion, hemodialysis, folate, and high-dose vitamin B, the blood and urine samples were collected for toxicity tests, which turned out to be methanol poisoning. After 8 hours of hemodialysis, the patient's consciousness recovered, but he complained of a complete loss of vision in both eyes. Brain and optic nerve magnetic resonance images showed bilateral symmetric putamen lesions and optic neuropathy. Ophthalmic tests indicated visual pathway impairment and optic disc swelling but no fluorescein leakage. The right eye's vision was partially restored on the third day, but he could only count fingers at 20 cm. Unfortunately, his eyesight ceased to improve during the 6 months of follow-up. Conclusions: Early diagnosis and prompt treatment will improve the prognosis of methanol poisoning in terms of vision and patient survival. Awareness and supervision of commercial alcohol use are indispensable for similar industrial processes.

6.
Mol Ecol ; 31(12): 3389-3399, 2022 06.
Article in English | MEDLINE | ID: mdl-35445467

ABSTRACT

Facing phosphate deficiency, phytoplankton use alkaline phosphatase (AP) to scavenge dissolved organophosphate (DOP). AP is a multitype (e.g., PhoA, PhoD) family of hydrolases and is known as a promiscuous enzyme with broad DOP substrate compatibility. Yet, whether the multiple types differentiate on substrates and collaborate to provide physiological flexibility remain elusive. Here we identify PhoA and PhoDs and document the functional differentiation between PhoA and a PhoD (PhoD_45757) in Phaeodactylum tricornutum. CRISPR/Cas9-based mutations and physiological analyses reveal that (1) PhoA is a secreted enzyme and contributes the majority of total AP activity whereas PhoD_45757 is intracellular and contributes a minor fraction of the total AP activity, (2) AP gene expression compensates for each other after one is disrupted, (3) the DOP→PhoA→phosphate_uptake and the DOP_uptake→PhoD→phosphate pathways function interchangeably for some DOP substrates. These findings shed light on the underpinning of AP's multiformity and have important implications in phytoplankton phosphorus-nutrient niche differentiation, physiological plasticity, and competitive strategy.


Subject(s)
Diatoms , Alkaline Phosphatase/genetics , Alkaline Phosphatase/metabolism , Diatoms/genetics , Organophosphates/metabolism , Phosphates/metabolism , Phosphorus/metabolism , Phytoplankton/genetics
7.
Front Endocrinol (Lausanne) ; 13: 852428, 2022.
Article in English | MEDLINE | ID: mdl-35370977

ABSTRACT

Despite numerous studies indicating an imperative role of vitamin D for reproduction, the importance of vitamin D supplementation on in vitro fertilization (IVF) outcomes remains controversial. We therefore performed this meta-analysis to investigate the IVF outcomes of vitamin D supplementation in infertile women with vitamin D deficiency. We systematically searched PubMed, Embase and the Cochrane library for identifying all relevant studies published before August 2021. Pregnancy rate was defined as the primary outcome while good quality embryo, fertilization rate, ongoing pregnancy, and miscarriage were secondary outcomes. We used Review Manager 5.3 (RevMan) to conduct meta-analysis and examined the robustness of the primary outcome by trial sequential analysis. Five studies were included in the final analysis and it suggested that vitamin D supplementation was associated with improved chemical pregnancy rate (risk ratio [RR] = 1.53, 95% confidence interval [CI] = 1.06 to 2.20, p = 0.02) but not benefited in improving clinical pregnancy rate (RR = 1.34, 95% CI = 0.81 to 2.24, p = 0.25) and all secondary outcomes. Trial sequential analysis suggested further studies are needed to confirm this conclusion. We concluded that vitamin D supplementation should be prescribed to improve chemical pregnancy in infertile women with vitamin D deficiency and more studies are required to further confirm this finding.


Subject(s)
Infertility, Female , Dietary Supplements , Female , Fertilization in Vitro , Humans , Infertility, Female/complications , Infertility, Female/therapy , Pregnancy , Pregnancy Outcome , Randomized Controlled Trials as Topic , Vitamin D
8.
Biomed Pharmacother ; 117: 109141, 2019 Sep.
Article in English | MEDLINE | ID: mdl-31228800

ABSTRACT

Millettia pulchra Kurz var-laxior (Dunn) Z. Wei, a wild-growing plant of the family Fabaceae is known to possess multifarious medicinal properties. 17-Methoxyl-7-hydroxy-benzene-furanchalcone (MHBFC) is a flavonoid monomer extracted from its root, which has been used in traditional Chinese medicine, with a long history as a remedy of hypertension and cardiovascular remodeling. The present study was conducted to further investigate the regulatory mechanisms of MHBFC based on the endothelial nitric oxide synthase-nitric oxide (eNOS-NO) signaling pathway. The abdominal aorta of the male Sprague-Dawley rats was narrowed to induce cardiac remodeling, and the rats were given corresponding drugs for 6 weeks after operation. At the end of the experiment, the relevant indexes were detected. The results showed that Nω-nitro-L-arginine methyl ester (L-NAME) could increase the myocardial cell cross-section area, myocardial fibrosis, and the cardiac collagen volume fraction. The serum NO and eNOS levels and the expression of p-eNOS, p-PI3K and p-Akt protein were decreased, and myocardial microvascular endothelial cell (MMVEC) apoptosis increased. However, the above changes were reversed after treatment with MHBFC. These results indicated that MHBFC could increase eNOS protein phosphorylation by increasing PI3K and Akt protein phosphorylation, and activated the eNOS-NO signaling pathway, increased eNOS enzyme activity, catalyzed the generation of protective NO, and counteracted MMVEC apoptosis induced by cardiac remodeling, thereby protecting against myocardial damage and reversing cardiac remodeling.


Subject(s)
Chalcones/pharmacology , Nitric Oxide Synthase Type III/metabolism , Nitric Oxide/metabolism , Signal Transduction , Ventricular Remodeling/drug effects , Animals , Apoptosis/drug effects , Endothelial Cells/drug effects , Endothelial Cells/pathology , Endothelial Cells/ultrastructure , Fibrosis , Male , Microvessels/pathology , Myocardium/pathology , Myocardium/ultrastructure , Nitric Oxide/blood , Phosphatidylinositol 3-Kinases/metabolism , Phosphorylation/drug effects , Proto-Oncogene Proteins c-akt/metabolism , Rats, Sprague-Dawley , Signal Transduction/drug effects
9.
Cell Mol Neurobiol ; 35(7): 943-52, 2015 Oct.
Article in English | MEDLINE | ID: mdl-25869596

ABSTRACT

RTP801 (also known as REDD1), a stress-related protein, is induced by several environmental stresses such as ischemia and cigarette smoke. Although ischemia can dramatically up-regulate RTP801 expression in brain ischemia, up to now, the exact relation between RTP801 and neuronal death in ischemia is poorly understood. In the current study, using oxygen and glucose deprivation as an in vitro ischemic model in primary cultured cortical neurons, we found that the expression of RTP801 increased progressively with prolongation of ischemic duration, in which the expression of RTP801 is positively correlated with the release of lactate dehydrogenase (LDH) in neurons, and knockdown of RTP801 promoted neuronal survival in ischemia-reperfusion. It was further found that ginkgolide B (GB) could significantly increase cell viability and decrease LDH release, and at the same time reduce the levels of RTP801 mRNA and protein in neurons after ischemia and reperfusion. Moreover, GB-induced reduction in expression of RTP801 was blocked by application of LY294002, a specific inhibitor of phosphatidylinositol 3-kinase (PI3K). These results demonstrate that RTP801 could play a detrimental role on neurons in ischemia, and GB might protect neurons against ischemic injury by inhibiting RTP801 expression via PI3K pathway.


Subject(s)
Brain Ischemia/metabolism , Brain Ischemia/prevention & control , DNA-Binding Proteins/antagonists & inhibitors , DNA-Binding Proteins/biosynthesis , Ginkgolides/therapeutic use , Lactones/therapeutic use , Neurons/metabolism , Transcription Factors/antagonists & inhibitors , Transcription Factors/biosynthesis , Adaptor Proteins, Signal Transducing , Animals , Cell Survival/drug effects , Cell Survival/physiology , Gene Expression Regulation , Ginkgolides/pharmacology , Lactones/pharmacology , Mice , Neurons/drug effects , Neuroprotective Agents/pharmacology , Neuroprotective Agents/therapeutic use , Plant Extracts/pharmacology , Plant Extracts/therapeutic use
10.
J Stroke Cerebrovasc Dis ; 24(5): 988-92, 2015 May.
Article in English | MEDLINE | ID: mdl-25813063

ABSTRACT

BACKGROUND: The impact of stroke is devastating the life of patients, families, and even the communities. The cost of treatment; however, has the tendency of increasing nowadays, which has brought a heavy burden to patients and their families. Our study aims to collect the data of the hospital cost among stroke patients in Chinese island populations over the past decade and provide the scientific improvement for stroke. METHODS: We retrospectively collected the basic information and hospital costs of the stroke patients in Dalian Changhai Hospital from 2003 to 2013 using the Information Registration System of Inpatient. RESULTS: The total cumulative hospital admissions for stroke in Dalian Changhai Hospital were 1367 and showed a rising tendency from 2003 to 2013. Our results illustrated that the annual cumulative hospital costs of stroke inpatients increased rapidly in the past 11 years (the average rise was 37.71% per year), and the mean hospital cost per admission was 1.66% higher than that before, when the mean length of hospital days showed a downward tendency. Medication cost was found to be the largest part in the overall hospital cost (as a high percentage of 73.94%); however, traditional Chinese medicine only occupied quite a small proportion in the medicines. CONCLUSIONS: The hospital cost for stroke in Dalian Changhai County has brought an increasingly heavy economic burden to the local government and residents.


Subject(s)
Hospitalization/economics , Stroke/economics , Stroke/therapy , China/epidemiology , Costs and Cost Analysis , Female , Humans , Islands/epidemiology , Length of Stay , Longitudinal Studies , Male , Retrospective Studies , Sex Factors , Stroke/epidemiology
11.
Sci Rep ; 4: 4433, 2014 Mar 24.
Article in English | MEDLINE | ID: mdl-24658501

ABSTRACT

Depression is a major psychiatric disorder affecting nearly 21% of the world population and imposes a substantial health burden on society. Current available antidepressants are not adequate to meet the clinical needs. Here we report that auraptenol, an active component of the traditional Chinese medicine, angelicae dahuricae radix, had antidepressant-like effects in mice models of depression. In mouse forced swimming test and tail suspension test, two validated models of depression, auraptenol dose-dependently decreased the immobility duration within the dose range of 0.05-0.4 mg/kg. In addition, the antidepressant-like effects of auraptenol was significantly averted by a selective serotonin 5-HT1A receptor antagonist WAY100635 (1 mg/kg). These doses that affected the immobile response did not affect locomotor activity. In summary, this study for the first time identified an active component from the herbal medicine angelicae dahuricae radix that possesses robust antidepressant-like efficacy in mice. These data support further exploration for the possibility of developing auraptenol as a novel antidepressant agent in the treatment of major depression disorders.


Subject(s)
Angelica/chemistry , Antidepressive Agents/pharmacology , Coumarins/pharmacology , Depression/drug therapy , Drugs, Chinese Herbal/pharmacology , Phytotherapy , Animals , Antidepressive Agents/antagonists & inhibitors , Antidepressive Agents/isolation & purification , Behavior, Animal/drug effects , Coumarins/antagonists & inhibitors , Coumarins/isolation & purification , Depression/physiopathology , Depression/psychology , Disease Models, Animal , Dose-Response Relationship, Drug , Drugs, Chinese Herbal/isolation & purification , Hindlimb Suspension , Male , Mice , Mice, Inbred C57BL , Motor Activity/drug effects , Piperazines/pharmacology , Pyridines/pharmacology , Receptors, Serotonin, 5-HT1/metabolism , Serotonin 5-HT1 Receptor Antagonists/pharmacology , Swimming
12.
Biol Pharm Bull ; 36(1): 23-30, 2013.
Article in English | MEDLINE | ID: mdl-23075695

ABSTRACT

For centuries, extracts of Acorus gramineus have been used extensively in traditional Chinese medicine for the treatment, management, and/or control of human ailments, including central nervous system disorders such as convulsions and epilepsy. In the present study, we investigated the anticonvulsant activity of chronic treatment with the plant's major essential oil component (a-asarone, 50-200 mg/kg, per os (p.o.)) against maximal electroshock seizure (MES), pentylenetetrazole (PTZ)-induced seizures in mice, lithium-pilocarpine (LI-PILO)-induced status epilepticus (SE), and spontaneous recurrent seizures (SRSs) in rats and determined whether a single acute administration of a-asarone at various doses could produce anticonvulsant activity. As the standard antiepileptic drugs used, chronically administered a-asarone (50-200 mg/kg, p.o.) significantly delayed (p<0.05) the onset of, and antagonized maximal electroshock seizure and PTZ-induced seizures. Chronically administered a-asarone (50-200 mg/kg) also profoundly antagonized LI-PILO-induced seizures. The SE incidence, SE latency and seizure severity as well as mortality were significantly reduced after treatment with a-asarone at different doses. Higher doses of a-asarone (100-200 mg/kg) significantly reduced spontaneous recurrent seizure incidence, severity, and seizure frequency during treatment in LI-PILO-induced SRSs rats. On the other hand, a single acute administration of a-asarone (50-200 mg/kg) produced weak anticonvulsant activity in MES and PTZ-induced seizures. The results of this laboratory animal study indicate that chronically administered a-asarone possesses anticonvulsant activity in the mammalian experimental model used, and thus suggest that a-asarone may be used as a natural supplementary remedy in the management of convulsions and epilepsy.


Subject(s)
Acorus , Anisoles/administration & dosage , Anticonvulsants/administration & dosage , Seizures/drug therapy , Allylbenzene Derivatives , Animals , Disease Models, Animal , Lethal Dose 50 , Mice , Phytotherapy , Rats , Rats, Wistar
13.
J Ethnopharmacol ; 144(2): 313-21, 2012 Nov 21.
Article in English | MEDLINE | ID: mdl-23022689

ABSTRACT

ETHNOPHARMACOLOGICAL RELEVANCE: Ligustilide (LIG), a main lipophilic component of Danggui (Chinese Angelica root, Radix Angelica sinensis) which is a popular used herb to treat menstrual disorders in traditional chinese medicine, has been reported to possess some neuroprotective effects on permanent focal ischemia and transient forebrain ischemia. AIM OF THE STUDY: Based on previous work, we intended to investigate the protective effects of LIG on parietal cortex and hippocampus of rats in chronic cerebral hypoperfusion model. MATERIALS AND METHODS: Chronic cerebral hypoperfusion was induced by permanent, bilateral common carotid artery's occlusion (2VO). The rats were treated with LIG (80mg/kg, by oral) from the eighth day after surgery for seven consecutive days. Their spatial learning and memory abilities were assessed using the Morris water maze. After six days for maze test, rats were sacrificed. Coronal sections in cortex and hippocampus were stained with cresyl violet or labeled with NeuN (Neuronal Nuclei), MAP-2 (Microtubule-Associated Protein-2), Caspase-3 and GFAP (Glial Fibrillary Acidic Protein) antibodies. RESULTS: LIG treatment for seven days decreased escape latency and swimming distance of 2VO rats from the third day in maze tests, and increased percent time in the target quadrant. LIG prevented neuronal loss, dendrites damage and neuronal apoptosis in both parietal cortex and hippocampus of 2VO rats; and it also inhibited astrocytic activation and proliferation stimulated by hypoperfusion. CONCLUSIONS: These results demonstrate that LIG show obvious neuroprotective potential for treating chronic cerebral hypoperfusion injury, which may be attributed to its anti-apoptosis of neuron and anti-proliferation of astrocyte both in cortex and in hippocampus of 2VO rats. We suggest that LIG can be developed as an effective drugs for the prevention of vascular dementia (VD).


Subject(s)
4-Butyrolactone/analogs & derivatives , Brain Ischemia/drug therapy , Neuroprotective Agents/therapeutic use , Phytotherapy , 4-Butyrolactone/pharmacology , 4-Butyrolactone/therapeutic use , Animals , Brain Ischemia/pathology , Brain Ischemia/physiopathology , Cognition/drug effects , Hippocampus/drug effects , Hippocampus/pathology , Male , Maze Learning/drug effects , Memory/drug effects , Neuroprotective Agents/pharmacology , Parietal Lobe/drug effects , Parietal Lobe/pathology , Rats , Rats, Sprague-Dawley
14.
Zhongguo Yi Liao Qi Xie Za Zhi ; 34(2): 82-5, 2010 Mar.
Article in Chinese | MEDLINE | ID: mdl-20540285

ABSTRACT

Electrophysiological stimulator is widely used in study of biological electrical activities. This electrophysiological stimulator is capable of outputting both biphasic and monophasic waveforms with amplitudes within 0V and 30V. The sequence of the biphasic waveforms is alterable and their widths and interval can be respectively arbitrarily modified by the operator. The machine will inform the operator as soon as the charge completes through the indicator and buzzer. The safety of experimental objects is guaranteed by float ground thanks to battery power supply.


Subject(s)
Electric Stimulation Therapy/instrumentation , Electric Countershock/instrumentation , Electrophysiological Phenomena , Equipment Design
15.
Zhongguo Yi Liao Qi Xie Za Zhi ; 32(1): 32-4, 39, 2008 Jan.
Article in Chinese | MEDLINE | ID: mdl-18438048

ABSTRACT

According to the instruction of the operator, the designed programmable multichannel stimulator will deliver stimuli with an assigned amplitude and a proper width to the electrode-array in various modes. Each stimulation time is controlled by the internal timer of the MCU, while the stimulated electrodes' spatial parameter is controlled by the CPLD. Having abandoned conventional isolation using the transformer, we have adapted optical coupling and stable float ground connection to achieve the safety standard required by physiological measurements.


Subject(s)
Electric Stimulation/instrumentation , Electric Stimulation/methods , Electric Stimulation Therapy/instrumentation , Electrodes, Implanted , Electrophysiology/instrumentation , Electrophysiology/methods
16.
Chemosphere ; 69(11): 1758-64, 2007 Nov.
Article in English | MEDLINE | ID: mdl-17624402

ABSTRACT

A trimetal oxide was developed as a fluoride adsorbent by coprecipitation of Fe(II), Al(III) and Ce(IV) salt solutions with a molar ratio of 1:4:1 under alkaline condition. The material retained amorphous structure and maintained relatively stable fluoride adsorption performance at calcination temperatures lower than 600 degrees C. The optimum pH range for fluoride adsorption was 6.0-6.5 and the adsorbent also showed high defluoridation ability around pH 5.5-7.0, which is preferable for actual application. A high fluoride adsorption capacity of 178 mg g(-1) was acquired under an equilibrium fluoride concentration of 84.5 mg l(-1), adsorbent dose of 150 mg l(-1) and pH 7.0. The adsorption isotherm could be better described by the two-site Langmuir model than the one-site model, suggesting the existence of two types of active sites on the adsorbent surface. Coexistence of high concentrations of phosphate or arsenate only led to partial inhibition of fluoride adsorption, which further suggests the existence of heterogeneous adsorption sites. Sulfate and chloride did not affect fluoride adsorption, and nitrate influenced it only when the concentration of NO(3)(-)-N exceeded 50 mg l(-1). A high desorption efficiency of 97% was achieved by treating fluoride loaded Fe-Al-Ce oxide with NaOH solution at pH 12.2. A column experiment using the adsorbent fabricated into 1mm pellets was performed at an initial fluoride concentration of 5.5 mg l(-1), space velocity of 5h(-1) and pH of 5.8, and 2240 bed volumes were treated with the effluent fluoride under 1.0 mg l(-1).


Subject(s)
Aluminum Oxide/chemistry , Cerium/chemistry , Ferrous Compounds/chemistry , Fluorides/analysis , Water Pollutants, Chemical/analysis , Water Purification/methods , Adsorption , Kinetics , Water Supply/standards
17.
Zhong Yao Cai ; 30(1): 120-2, 2007 Jan.
Article in Chinese | MEDLINE | ID: mdl-17539316

ABSTRACT

OBJECTIVE: To evaluate the efficacy and safety of isatis root eyedrops on the acute bacterial conjunctivitis. METHODS: A randomized, double-blind and parallel study was conducted on 200 cases. Isatis root eyedrops and Hailun eyedrops (levofloxacin eyedrops), six times each day, were administered in test and control groups respectively. All patients have been observed for 7 days. The clinical effectiveness and reaction to drug after administration were assessed as the observation indexes. RESULTS: The efficacy rates in test and control group were 90% and 93%, repectively, the difference between the two groups had no statistic significance (P > 0.05). There have been two cases with side effects among the test and control groups respectively. CONCLUSION: Isatis root eyedrops have an excellent efficacy and safety on the acute bacterial conjunctivitis.


Subject(s)
Anti-Infective Agents/therapeutic use , Conjunctivitis, Bacterial/drug therapy , Drugs, Chinese Herbal/therapeutic use , Isatis/chemistry , Phytotherapy , Adolescent , Adult , Aged , Double-Blind Method , Humans , Levofloxacin , Middle Aged , Ofloxacin/therapeutic use , Ophthalmic Solutions , Plant Roots/chemistry , Plants, Medicinal/chemistry , Treatment Outcome
18.
Space Med Med Eng (Beijing) ; 18(4): 303-5, 2005 Aug.
Article in Chinese | MEDLINE | ID: mdl-16224855

ABSTRACT

OBJECTIVE: To observe the protective effects of Rhodiola-astragalus membranaceus mixture against brain damage during hypoxia under simulated plateau environment and the mechanisms maybe involved in. METHOD: Adult SD rats were randomly divided into 3 groups, which were normoxic control, simulated plateau hypoxia, and Rhodiola-astragalus membranaceus mixture pretreatment group. Rats in the latter two groups were exposed to simulated 8000 m altitude in a hypobaric chamber for 7 h. Water content, Na+, K(+)-ATPase activity and SOD activity in cerebral tissue, malondialdehyde (MDA) and lactic acid content in cerebral homogenate and serum were measured. RESULT: As compared with control group, cerebral water content was significantly higher in hypoxia group, while it was obviously lower in pretreatment group. MDA contents of hypoxia group both in cerebral homogenate and serum were higher than that of control group, while the pretreatment group they were both decreased obviously. Lactic acid content of hypoxia group in cerebral and in serum increased markedly and decreased drastically in pretreatment group compared to that of hypoxic group. CONCLUSION: Rhodiola-astragalus membranaceus mixture has preventive effects on hypoxic damage induced by simulated plateau environment. This prevention may be related to the antagonistic effect on membrane lipid peroxidation and the inhibition on the accumulation of lactic acid in brain tissue and serum.


Subject(s)
Altitude , Astragalus propinquus , Drugs, Chinese Herbal/pharmacology , Hypoxia, Brain/prevention & control , Rhodiola , Adenosine Triphosphatases/drug effects , Adenosine Triphosphatases/metabolism , Animals , Atmosphere Exposure Chambers , Cation Transport Proteins , Extracellular Fluid/drug effects , Hypoxia, Brain/drug therapy , Lactic Acid/metabolism , Malondialdehyde/metabolism , Phytotherapy , Rats , Rats, Sprague-Dawley , Sodium/metabolism , Superoxide Dismutase/drug effects , Superoxide Dismutase/metabolism
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