scholarly journals Hypoglycemic Properties of Oxovanadium (IV) Coordination Compounds with Carboxymethyl-Carrageenan and Carboxymethyl-Chitosan in Alloxan-Induced Diabetic Mice

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Hongyu Zhang ◽  
Yuetao Yi ◽  
Dawei Feng ◽  
Yipeng Wang ◽  
Song Qin
Keyword(s):  
Dose Group ◽  
Positive Control ◽  
Carboxymethyl Chitosan ◽  
High Dose Group ◽  
Control Group ◽  
Oral Glucose ◽  
High Dose ◽  
Intragastric Administration ◽  
Diabetic Mice ◽  
Model Control

In order to avoid low absorption, incorporation, and undesirable side effects of inorganic oxovanadium compounds, the antidiabetic activities of organic oxovanadium (IV) compounds in alloxan-induced diabetic mice were investigated. Vanadyl carboxymethyl carrageenan (VOCCA) and vanadyl carboxymethyl chitosan (VOCCH) were synthesized and administrated through intragastric administration in different doses for 20 days in alloxan-induced diabetic mice. Glibenclamide was administrated as the positive control. Our results showed that low-dose group, middle-dose group, and high-dose group of VOCCA and VOCCH could significantly reduce the levels of blood glucose (P<0.05) compared with untreated group, but not in normal mice. Besides, high-dose groups of VOCCA and VOCCH exhibited more significant hypoglycemic activities (P<0.01). After treated with VOCCH, the oral glucose tolerance of high-dose group of VOCCH was improved compared with model control group (P<0.05).

scholarly journals Study on the Effect of Ginsenosides Rb on Blood of Tumor Mice

2019 ◽  
Vol 2019 ◽  
pp. 1-6 ◽  
Author(s):  
Mengmeng Zheng ◽  
Wenxiu Zheng ◽  
Wei Wang ◽  
Hong Guo ◽  
Hui Cao ◽  
...  
Keyword(s):  
Dose Group ◽  
Extraction Process ◽  
Positive Control ◽  
Control Group ◽  
High Dose ◽  
Group Model ◽  
Mice Model ◽  
Distribution Width ◽  
Model Control ◽  
Water Saturated

Objective. The blood of cancer patients is in a state of hypercoagulability, easily leading to thrombosis. Anemia is also a complication of tumors. Anemia and thrombosis affect the treatment of tumor patients. Methods. Ginsenosides Rb were extracted from the stems and leaves of American ginseng using water-saturated ethanol and ethyl acetate in silica gel column. Tumor mice model was established by injecting H22 hepatocellular carcinoma cells into the axilla of mice. Mice were randomly divided into 6 groups: normal control group, model control group, positive control group, low dose group (7 mg/kg), middle dose group (14 mg/kg), and high dose group (35 mg/kg). After 18 days, the blood was obtained by picking the eyeball of mice. The levels of red blood cells (RBC), hemoglobin (HGB), neutrophils/lymphocytes radio (NLR), platelets (PLT), platelet distribution width (PDW), fibrinogen (FIB), and D-Dimer (D-D) were measured and compared in each group of mice. Results. The content of obtained ginsenosides Rb reached 90.05%. This extraction process was simple and reliable. Middle dose of ginsenosides Rb could significantly increase RBC and HGB levels (P<0.05). Moreover, ginsenosides Rb could significantly reduce NLR, PLT, PDW, FIB, and D-D (P<0.01). Conclusion. ginsenosides Rb could significantly improve anaemia and hypercoagulation of blood in cancer mice. Ginsenosides Rb are a potential anticoagulant and antianemia drug in treating cancer.

scholarly journals Newly Developed Recombinant Antithrombin Protects the Endothelial Glycocalyx in an Endotoxin-Induced Rat Model of Sepsis

2020 ◽  
Vol 22 (1) ◽  
pp. 176
Author(s):  
Toshiaki Iba ◽  
Jerrold H. Levy ◽  
Koichiro Aihara ◽  
Katsuhiko Kadota ◽  
Hiroshi Tanaka ◽  
...  
Keyword(s):  
Dose Group ◽  
Low Dose ◽  
Leukocyte Adhesion ◽  
Endothelial Glycocalyx ◽  
High Dose Group ◽  
Control Group ◽  
High Dose ◽  
Protective Effects ◽  
Circulating Levels

(1) Background: The endothelial glycocalyx is a primary target during the early phase of sepsis. We previously reported a newly developed recombinant non-fucosylated antithrombin has protective effects in vitro. We further evaluated the effects of this recombinant antithrombin on the glycocalyx damage in an animal model of sepsis. (2) Methods: Following endotoxin injection, in Wistar rats, circulating levels of hyaluronan, syndecan-1 and other biomarkers were evaluated in low-dose or high-dose recombinant antithrombin-treated animals and a control group (n = 7 per group). Leukocyte adhesion and blood flow were evaluated with intravital microscopy. The glycocalyx was also examined using side-stream dark-field imaging. (3) Results: The activation of coagulation was inhibited by recombinant antithrombin, leukocyte adhesion was significantly decreased, and flow was better maintained in the high-dose group (both p < 0.05). Circulating levels of syndecan-1 (p < 0.01, high-dose group) and hyaluronan (p < 0.05, low-dose group; p < 0.01, high-dose group) were significantly reduced by recombinant antithrombin treatment. Increases in lactate and decreases in albumin levels were significantly attenuated in the high-dose group (p < 0.05, respectively). The glycocalyx thickness was reduced over time in control animals, but the derangement was attenuated and microvascular perfusion was better maintained in the high-dose group recombinant antithrombin group (p < 0.05). (4) Conclusions: Recombinant antithrombin maintained vascular integrity and the microcirculation by preserving the glycocalyx in this sepsis model, effects that were more prominent with high-dose therapy.

scholarly journals Immunoregulatory function of Dictyophora echinovolvata spore polysaccharides in immunocompromised mice induced by cyclophosphamide

2021 ◽  
Vol 16 (1) ◽  
pp. 620-629
Author(s):  
Chenqiang Lin ◽  
Hui Zhang ◽  
Longjun Chen ◽  
Yu Fang ◽  
Jichen Chen
Keyword(s):  
Lymphocyte Transformation ◽  
Positive Control ◽  
Control Group ◽  
High Dose ◽  
Humoral And Cellular Immunity ◽  
Model Control ◽  
Healthy Female ◽  
Group A ◽  
Immunocompromised Mice ◽  
Immune Imbalance

Abstract The purpose of this study was to investigate whether the Dictyophora echinovolvata spore polysaccharides (DESP) affect the immunity in immunocompromised mice induced by cyclophosphamide (CTX). The healthy female Kunming mice were randomly divided into six groups, including a normal control (NC) group, a positive control group, a model control (MC) group, and three groups treated with low-, intermediate-, and high-dose polysaccharide, respectively. A series of immunoregulatory properties were determined, including humoral and cellular immunity, immune function, and immune factors of mononuclear macrophages. Compared with NC and MC groups, treatment with DESP significantly increased the spleen index and decreased the thymus index; increased the serum concentrations of immunoglobulin (Ig)A, IgG, IgM, hemolysin, IL-1β, and IL-2; delayed the allergic reaction; and improved the splenic lymphocyte transformation ability; and enhanced the phagocytosis of macrophages and the ability to secrete IL-6, TNF-α, caspase-1, and NO with DESP supplementation. These results indicated that DESP might have a good regulatory effect on CTX-induced immunodeficiency in mice, adjust the body’s immune imbalance, and improve the symptoms of low immunity.

scholarly journals Effect of Natural Chinese Herbal Supplements (TCMF4) on Lactation Performance and Serum Biomarkers in Peripartal Dairy Cows

2022 ◽  
Vol 8 ◽  
Author(s):  
Yizhe Cui ◽  
Zhuorui Shan ◽  
Lintong Hou ◽  
Qiuju Wang ◽  
Juan J. Loor ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Total Protein ◽  
Dose Group ◽  
Production Performance ◽  
High Dose Group ◽  
Holstein Cows ◽  
Control Group ◽  
High Dose ◽  
Lactation Performance

This study examined the effect of mixed medicinal herbs from China in the ground form on milk yield and various blood metabolites before and after parturition in Holstein cows. Crushed Agastache rugosus, Scutellaria barbata, Pericarpium citri reticulate, and Radix glycyrrhizae were used to develop TCMF4. Thirty-two Chinese Holstein cows were randomly divided into a control group or groups receiving 0.1, 0.3, or 0.5 kg TCMF4/cow/d from −7 through 21 d relative to parturition. Blood samples for serum isolation were collected at −7, −1, 1, 7, 14, and 21 d relative to parturition and used to measure glucose, β-hydroxybutyric acid (BHBA), total protein, albumin, globulin, and alkaline phosphatase. Milk production was recorded daily for the first 21 d postpartum, and composition was analyzed at 7, 14, and 21 d. Data were analyzed using a one-way analysis of variance (ANOVA) for multiple comparisons. The average milk production during the first 21-d postpartum was 28.7 ± 6.9, 27.2 ± 7.1, 31.2 ± 6.8, and 38.5 ± 6.1 kg/d for control group and groups receiving 0.1, 0.3, or 0.5 kg TCMF4. Thus, average daily milk production increased between 9 to 34% by supplementation with TCMF4 compared with the control group. Compared with the control group, in the middle dose group, milk concentrations of lactose and total protein decreased by 21 and 19%, respectively, at d 7 around parturition, while total solids increased by 23% at d 21 in the high-dose group. Furthermore, compared with the control group, serum BHBA decreased by 50 and 20% at d −1 and 21 around parturition in the high-dose group. Overall, TCMF4 supplementation improved dry matter intake (DMI) and milk production of dairy cows during the periparturient period without adverse effects on liver function, and plasma BHBA concentrations of dairy cows tended to decrease when dietary TCMF4 increased, which suggested that TCMF4 might be used as potential additives in dairy cows to improve production performance.

Effect of High or Low Dose Phenoxybenzamine on Per-Operative Hemodynamics in Pheochromocytoma

2020 ◽  
Author(s):  
Randi Ugleholdt ◽  
Åse Krogh Rasmussen ◽  
Pernille Agnete Heldager Haderslev ◽  
Bjarne Kromann-Andersen ◽  
Claus Larsen Feltoft
Keyword(s):  
Blood Pressure ◽  
Dose Regimen ◽  
Laparoscopic Adrenalectomy ◽  
Dose Group ◽  
Low Dose ◽  
High Dose Group ◽  
Control Group ◽  
High Dose ◽  
Intravenous Fluids ◽  
Preoperative Treatment

Abstract Background. Alpha-receptor blockade is the mainstay in preoperative treatment of patients with pheochromocytoma and paraganglioma (PPGL). However, evidence regarding optimal dosage regimen is lacking. This study compares the per- and postoperative hemodynamics in patients pre-treated with a high or low dose of phenoxybenzamine. Methods. 30 consecutive patients with PPGL undergoing laparoscopic adrenalectomy were identified retrospectively. All were pretreated with phenoxybenzamine but at two separate endocrine departments aiming at different blood pressure target. End-dosage of phenoxybenzamine differed significantly between departments with 14 patients receiving a high dose regimen and 16 a low dose regimen. As a control group, we included 42 patients undergoing laparoscopic adrenalectomy for other reasons. Primary purpose was to compare per- and postoperative hemodynamics in the high and low dose groups. Secondly, to compare these endpoints to the control group. Results. Baseline characteristics did not differ between the phenoxybenzamine treated groups. The high dose group had less intra-operative systolic and diastolic blood pressure fluctuation (p = 0.03) and less periods with heart rate above 100 bpm (p = 0.04) as compared to the low dose group. Use of intravenous fluids were similar between the two groups. However, postoperatively, more intravenous fluids were administered in the high dose group. Overall, the control group was more hemodynamic stable as compared to either group treated for PPGL. Conclusions. High dose phenoxybenzamine improves per-operative hemodynamic stability but causes a higher postoperative requirement for intravenous fluids. Overall, PPGL surgery is related to greater hemodynamic instability compared to adrenalectomy for other reasons.

scholarly journals Cholesteryl ester transfer protein inhibitor (JTT-705) and the development of atherosclerosis in rabbits with severe hypercholesterolaemia

2002 ◽  
Vol 103 (6) ◽  
pp. 587-594 ◽  
Author(s):  
Zhiping HUANG ◽  
Akihiro INAZU ◽  
Atsushi NOHARA ◽  
Toshinori HIGASHIKATA ◽  
Hiroshi MABUCHI
Keyword(s):  
Cholesteryl Ester ◽  
Cholesteryl Ester Transfer Protein ◽  
Dose Group ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
High Dose Group ◽  
Control Group ◽  
High Dose ◽  
Low Density ◽  
Transfer Protein

Cholesteryl ester transfer protein (CETP) is a major determinant of plasma levels of high-density lipoprotein-cholesterol (HDL-C) in humans. The anti-atherogenic effect of lowering CETP levels is dependent not only on HDL-C levels but also on a metabolic background of increased low-density lipoprotein or very-low-density lipoprotein. Here we investigated the effects of JTT-705, a chemical inhibitor of CETP, on the development of atherosclerosis in Japanese white rabbits fed on a high cholesterol diet. After 4 weeks on a diet of 0.25% cholesterol-containing chow, 100mg/kg (low dose) or 300mg/kg (high dose) JTT-705 was given, and the animals were monitored at weeks 0, 4, 8 and 12. Aortic atherosclerotic lesions were determined at the end of this period. JTT-705 induced a significant increase in HDL-C in the high-dose group [from 21±3 to 50±7mg/dl (mean±S.E.M.); P<0.0001] compared with the control group (from 21±2 to 27±2mg/dl). The atheromatous area was 60±9% in the high-dose group and 58±9% in the control group. Moreover, correlation analysis showed that triacylglycerol and non-HDL-C levels had a direct relationship with the development of atherosclerosis, but CETP activity and HDL-C levels did not. Thus the CETP inhibitor JTT-705 alone did not have an anti-atherogenic effect in our rabbit model, of severe hypercholesterolaemia suggesting a relatively minor effect of HDL-elevating therapy as compared with decreases in non-HDL-C (or triacylglycerol) levels in patients with severe hypercholesterolaemia, such as familial hypercholesterolaemia.

Peanut meal extract fermented with Bacillus natto attenuates physiological and behavioral deficits in a D-galactose-induced aging rat model

2021 ◽  
pp. 1-28
Author(s):  
Haoyue Ding ◽  
Zichao Li ◽  
Qing Liu ◽  
Yuanjie Zhang ◽  
Yanping Wang ◽  
...  
Keyword(s):  
Dose Group ◽  
Peanut Meal ◽  
Positive Control ◽  
Control Group ◽  
High Dose ◽  
Aging Effects ◽  
Sod Activity ◽  
Aging Rats ◽  
Aging Model ◽  
Bacillus Natto

Abstract Our previous studies have shown that the nutritional properties of peanut meal after fermentation are markedly improved. In this study, in order to facilitate the further utilization of peanut meal, we investigated the effects of its fermentation extract by Bacillus natto (FE) on cognitive ability, antioxidant activity of brain, and protein expression of hippocampus of aging rats induced by D-galactose. Seventy-two female SD rats aged 4-5 months were randomly divided into six groups: normal control group (N), aging model group (M), FE low-dose group (FL), FE medium-dose group (FM), FE high-dose group (FH) and vitamin E positive control group (Y). Morris water maze (MWM) test was performed to evaluate their effects on learning and memory ability in aging rats. SOD activity and malondialdehyde (MDA) content of brain, HE staining and the expression of γ-aminobutyric acid receptor 1 (GABABR1) and N-methyl-D-aspartic acid 2B receptor (NMDAR2B) in the hippocampus of rats were measured. The results show that FE supplementation can effectively alleviate the decrease of thymus index induced by aging, decrease the escape latency of MWM by 66.06%, brain MDA by 28.04%, hippocampus GABABR1 expression by 7.98%, and increase brain SOD by 63.54% in aging model rats. This study provides evidence for its anti-aging effects and is a research basis for potential nutritional benefits of underutilized food by-products.

Amelioration of Constipation by Cordyceps militaris Polysaccharides

2017 ◽  
Vol 17 (4) ◽  
pp. 372-375
Author(s):  
Xin Xin ◽  
Niu Yingying ◽  
Xing Meimei ◽  
Li Changqin ◽  
Kang Wenyi
Keyword(s):  
Dose Group ◽  
Serum Levels ◽  
Cordyceps Militaris ◽  
High Dose Group ◽  
High Dose ◽  
Intragastric Administration ◽  
Colon Tissue ◽  
Tissue Slices ◽  
Abnormal Cells ◽  
Histologic Changes

The effect of constipation of Cordyceps militaris (C. militaris) polysaccharide was evaluated in rat constipated models. Constipation was induced by intragastric administration of loperamide hydrochloride at a dosage of 0.75 mg/kg twice daily for 10 days. C. militaris polysaccharide at doses of 800, 400, 200 mg/kg (1 mL/100 g weight) were administered to loperamide-treated rats for 7 days. The serum levels of motilin, gastrin and substance P were significantly increased in the Loperamide/Maren group (P < 0.05) and C. militaris polysaccharide high dose group (P < 0.05) compared with the Loperamide only group. The levels of somatostatin in the Loperamide/Maren group (P < 0.05) and C. militaris polysaccharide high dose group (P < 0.05) were significantly decreased. Colon tissue slices were examined for any histologic changes. Colon tissues from constipated rats showed ruptured and abnormal cells. Such changes were less common in rats treated with high-dose C. militaris polysaccharide.

scholarly journals Influence of nonylphenol exposure on basic growth, development, and thyroid tissue structure in F1 male rats

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7039
Author(s):  
Lin Wang ◽  
Jie Xu ◽  
Feng Zeng ◽  
Xiangjun Fu ◽  
Weihong Xu ◽  
...  
Keyword(s):  
Dose Group ◽  
Corn Oil ◽  
Thyroid Tissue ◽  
Male Rats ◽  
Follicular Epithelium ◽  
High Dose Group ◽  
Control Group ◽  
High Dose ◽  
Dependent Manner ◽  
Lactational Exposure

Objective Environmental endocrine disruptors (EEDs) with a weak ability to mimic estrogen have been associated with thyroid dysfunction. However, little is known about the effect of nonylphenol (NP), a well-known EED, on thyroid structure. The present study evaluates whether gestational and lactational exposure to NP impacts growth and thyroid structure in F1 male rats. Methods A total of 60 rats were gavaged with NP (25, 50, and 100 mg/kg), estradiol (E2, 30 μg/kg/day), and corn oil alone (vehicle control) from gestational day 6 to postnatal day (PND) 21. Serum thyroid hormones free triiodothyronine (FT3), free thyroxine (FT4) and thyroid stimulating hormone levels were detected by automated chemiluminescence immunoassay analyzer. The NP level in the thyroid was measured using high-performance liquid chromatography. The ultrastructure of follicular epithelial cells was examined using transmission electron microscopy. Histopathology was conducted using hematoxylin and eosin staining. Results On PND 0, exposure to 50 and 100 mg/kg/day NP led to a significant decrease in the average litter size, litter weight and number of live pups per litter compared to the control group (P < 0.05). Dams exposed to NP during perinatal period demonstrated decreased serum levels of FT3 and FT4 in F1 male rats, when compared to the control group (P < 0.05). The NP level in the control group was 3.39 ± 0.08 ng/mg, while NP levels in the low, middle, and high dose groups ranged from 5.20 to 11.00 ng/mg. Exposure caused a dose-related increase in NP level in the thyroid of male pups (P < 0.01). The thicknesses of the thyroid follicular epithelium were 2.06 ± 0.37 μm in the control group and 3.97 ± 1.61 μm in the high-dose group. The thickness of the thyroid follicular epithelium increased with an increase in treatment dose in a dose-dependent manner (P < 0.05). The sizes of the thyroid follicles were 1,405.53 ± 866.62 μm2 in the control group and 317.49 ± 231.15 μm2 in the high-dose group. With increasing NP dosages, animals showed a decreased size of the thyroid follicle (P < 0.01). Thyroid follicular cells of NP-treated rats showed mildly swollen mitochondria and dilated rough endoplasmic reticulum in the cytoplasm. Conclusion Nonylphenol can cross the placental barrier and accumulate in the thyroid of F1 male rats. Gestational and lactational exposure to NP in dams impacted both development and growth of pups and damaged the ultrastructure of their thyroid tissue, which may further negatively influence normal thyroid function.

scholarly journals The Safety of Viscum Album L. in A Murine Model: A Reproductive Toxicity Study

2020 ◽  
Author(s):  
Ricardo Ghelman ◽  
Mirlene Cecília Soares Pinho Cernach ◽  
Marcia Marcelino de Souza Ishigai ◽  
Jorge Kioshi Hosomi ◽  
Manuel de Jesus Simões ◽  
...  
Keyword(s):  
Therapeutic Dose ◽  
Dose Group ◽  
Reproductive Toxicity ◽  
Viscum Album ◽  
High Dose Group ◽  
Control Group ◽  
High Dose ◽  
Pregnant Rats ◽  
Usual Therapeutic Dose ◽  
Therapeutic Doses

Abstract Background: The use of antineoplasic drugs in pregnancy poses a huge safety challenge because of the risk of teratogenicity, mutagenicity and carcinogenicity. The rational use of the herbal medicine Viscum album (VA) has shown promising results in several tumor lines as part of the strategy of immunotherapy and anti-angiogenesis in integrative oncology. The safety of intrauterine fetal exposure to VA is however unknown and can be further evidenced for therapeutic doses in pregnant cancer patients.Methods: 47 pregnant Wistar rats and 399 fetuses bred following exposure to VA were investigated. The rats were randomized into five groups. Control group (CG) received no treatment and stress group (SG) received daily vehicle subcutaneous injections alone in same volume as the treatment groups from day zero until the twentieth day of pregnancy. There were three treatments groups: therapeutic dose group (TG) received the usual therapeutic dose (UTD) of 0.013 mg/kg BW; high dose group (HG) received 12.5 mg/kg BW and very high dose group (VHG) received 25mg/kg BW, daily.Results: Weight gain was greater in the rats, placentas and fetuses in the TG and HG compared to SG. Histology of the placentas showed a greater inflammatory process in HG and VHG.Conclusion: Since no cases of abortion, embryotoxicity, natimortality or teratogenicity were found in the fetuses and histology detected no lesions in the tissues evaluated, it is reasonable to conclude that this drug is safe for use in pregnant rats.

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