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Roque JA, Lukesh NR, Hendy DA, Dixon TA, Islam MJ, Ontiveros-Padilla L, Pena ES, Lifshits LM, Simpson SR, Batty CJ, Bachelder EM, Ainslie KM. Enhancement of subunit vaccine delivery with zinc-carnosine coordination polymer through the addition of mannan. Int J Pharm 2024; 656:124076. [PMID: 38569976 PMCID: PMC11062752 DOI: 10.1016/j.ijpharm.2024.124076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/24/2024] [Accepted: 03/31/2024] [Indexed: 04/05/2024]
Abstract
Vaccines represent a pivotal health advancement for preventing infection. However, because carrier systems with repeated administration can invoke carrier-targeted immune responses that diminish subsequent immune responses (e.g., PEG antibodies), there is a continual need to develop novel vaccine platforms. Zinc carnosine microparticles (ZnCar MPs), which are composed of a one-dimensional coordination polymer formed between carnosine and the metal ion zinc, have exhibited efficacy in inducing an immune response against influenza. However, ZnCar MPs' limited suspendability hinders clinical application. In this study, we address this issue by mixing mannan, a polysaccharide derived from yeast, with ZnCar MPs. We show that the addition of mannan increases the suspendability of this promising vaccine formulation. Additionally, since mannan is an adjuvant, we illustrate that the addition of mannan increases the antibody response and T cell response when mixed with ZnCar MPs. Mice vaccinated with mannan + OVA/ZnCar MPs had elevated serum IgG and IgG1 levels in comparison to vaccination without mannan. Moreover, in the mannan + OVA/ZnCar MPs vaccinated group, mucosal washes demonstrated increased IgG, IgG1, and IgG2c titers, and antigen recall assays showed enhanced IFN-γ production in response to MHC-I and MHC-II immunodominant peptide restimulation, compared to the vaccination without mannan. These findings suggest that the use of mannan mixed with ZnCar MPs holds potential for subunit vaccination and its improved suspendability further promotes clinical translation.
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Affiliation(s)
- John A Roque
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Nicole Rose Lukesh
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Dylan A Hendy
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Timothy A Dixon
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Md Jahirul Islam
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Luis Ontiveros-Padilla
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Erik S Pena
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC 27599, United States
| | - Liubov M Lifshits
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Sean R Simpson
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Cole J Batty
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Eric M Bachelder
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Kristy M Ainslie
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States; Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC 27599, United States; Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States.
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Abe A, Kapoor MP, Morishima S, Ozeki M, Sato N, Takara T, Naito Y. Effectiveness of Partially Hydrolyzed Guar Gum on Cognitive Function and Sleep Efficiency in Healthy Elderly Subjects in a Randomized, Double-Blind, Placebo-Controlled, and Parallel-Group Study. Nutrients 2024; 16:1211. [PMID: 38674901 PMCID: PMC11054110 DOI: 10.3390/nu16081211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
The consumption of functional foods in a daily diet is a promising approach for the maintenance of cognitive health. The present study examines the effects of water-soluble prebiotic dietary-fiber, partially hydrolyzed guar gum (PHGG), on cognitive function and mental health in healthy elderly individuals. Participants consumed either 5 g/day of PHGG or a placebo daily for 12 weeks in this randomized, double-blind, placebo-controlled, and parallel-group study. An assessment of cognitive functions, sleep quality, and subjective mood evaluations was performed at baseline and after 8 and 12 weeks of either PHGG or placebo intake. The visual memory scores in cognitive function tests and sleepiness on rising scores related to sleep quality were significantly improved in the PHGG group compared to the placebo group. No significant differences were observed in mood parameters between the groups. Vigor-activity scores were significantly improved, while the scores for Confusion-Bewilderment decreased significantly in the PHGG group when compared to the baseline. In summary, supplementation with PHGG was effective in improving cognitive functions, particularly visual memory, as well as enhancing sleep quality and vitality in healthy elderly individuals (UMIN000049070).
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Affiliation(s)
- Aya Abe
- Department of Research and Development, Nutrition Division, Taiyo Kagaku Co., Ltd., 1-3 Takaramachi, Yokkaichi, Mie 510-0844, Japan; (M.P.K.); (S.M.); (M.O.); (N.S.)
| | - Mahendra Parkash Kapoor
- Department of Research and Development, Nutrition Division, Taiyo Kagaku Co., Ltd., 1-3 Takaramachi, Yokkaichi, Mie 510-0844, Japan; (M.P.K.); (S.M.); (M.O.); (N.S.)
| | - So Morishima
- Department of Research and Development, Nutrition Division, Taiyo Kagaku Co., Ltd., 1-3 Takaramachi, Yokkaichi, Mie 510-0844, Japan; (M.P.K.); (S.M.); (M.O.); (N.S.)
| | - Makoto Ozeki
- Department of Research and Development, Nutrition Division, Taiyo Kagaku Co., Ltd., 1-3 Takaramachi, Yokkaichi, Mie 510-0844, Japan; (M.P.K.); (S.M.); (M.O.); (N.S.)
| | - Norio Sato
- Department of Research and Development, Nutrition Division, Taiyo Kagaku Co., Ltd., 1-3 Takaramachi, Yokkaichi, Mie 510-0844, Japan; (M.P.K.); (S.M.); (M.O.); (N.S.)
| | - Tsuyoshi Takara
- Medical Corporation Seishinkai, Takara Clinic, 9F Taisei Bldg., 2-3-2, Higashi-gotanda, Shinagawa, Tokyo 141-0022, Japan;
| | - Yuji Naito
- Department of Human Immunology and Nutrition Science, Kyoto Prefectural University of Medicine, Kamigyoku, Kyoto 602-8566, Japan;
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Darya GH, Zare O, Karbalaei-Heidari HR, Zeinali S, Sheardown H, Rastegari B. Enzyme-responsive mannose-grafted magnetic nanoparticles for breast and liver cancer therapy and tumor-associated macrophage immunomodulation. Expert Opin Drug Deliv 2024; 21:663-677. [PMID: 38680108 DOI: 10.1080/17425247.2024.2347300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 03/04/2024] [Indexed: 05/01/2024]
Abstract
BACKGROUND Chemo-immunotherapy modifies the tumor microenvironment to enhance the immune response and improve chemotherapy. This study introduces a dual-armed chemo-immunotherapy strategy combating breast tumor progression while re-polarizing Tumor-Associated Macrophage (TAM) using prodigiosin-loaded mannan-coated magnetic nanoparticles (PG@M-MNPs). METHODS The physicochemical properties of one-step synthetized M-MNPs were analyzed, including X-ray diffraction, FTIR, DLS, VSM, TEM, zeta potential analysis, and drug loading content were carried out. Biocompatibility, cancer specificity, cellular uptake, and distribution of PG@M-MNPs were investigated using fluorescence and confocal laser scanning microscopy, and flow cytometry. Furthermore, the expression levels of IL-6 and ARG-1 after treatment with PG and PG@M-MNPs on M1 and M2 macrophage subsets were studied. RESULTS The M-MNPs were successfully synthesized and characterized, demonstrating a size below 100 nm. The release kinetics of PG from M-MNPs showed sustained and controlled patterns, with enzyme-triggered release. Cytotoxicity assessments revealed an enhanced selectivity of PG@M-MNPs against cancer cells and minimal effects on normal cells. Additionally, immuno-modulatory activity demonstrates the potential of PG@M-MNPs to change the polarization dynamics of macrophages. CONCLUSION These findings highlight the potential of a targeted approach to breast cancer treatment, offering new avenues for improved therapeutic outcomes and patient survival.
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Affiliation(s)
- Gholam Hossein Darya
- Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Comparative Biomedical Sciences, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Science, Shiraz, Iran
| | - Omid Zare
- Department of Biology, Islamic Azad University, Tehran, Iran
| | - Hamid Reza Karbalaei-Heidari
- Molecular Biotechnology Lab, Department of Biology, Faculty of Science, Shiraz University, Shiraz, Iran
- Department of Chemistry, Faculty of Science, University of Manitoba, Winnipeg, MB, Canada
| | - Sedighe Zeinali
- Department of Nanochemical Engineering, School of Advanced Technologies, Nanotechnology Research Institute, Shiraz University, Shiraz, Iran
| | - Heather Sheardown
- Department of Chemical Engineering, McMaster University, Hamilton, ON, Canada
| | - Banafsheh Rastegari
- Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
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Watanabe H, Inoue T, Miyamoto L, Ono Y, Matsumoto K, Takeda M, Tsuchiya K. Changes in intestinal microbiota and biochemical parameters in patients with inflammatory bowel disease and irritable bowel syndrome induced by the prolonged addition of soluble fibers to usual drug therapy. J Med Invest 2024; 71:121-128. [PMID: 38735707 DOI: 10.2152/jmi.71.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
OBJECTIVES Partially hydrolyzed guar gum (PHGG) is a soluble dietary fiber;in addition to improving bowel movements, it maintains intestinal health by producing short-chain fatty acids. However, majority of clinical studies on PHGG have been concluded within a month and excluded usual drug therapy. Hence, this study aimed to determine the effects of long-term consumption of PHGG, in combination with drug therapy, on gut bacteria ratios, laboratory values for inflammatory response, and fecal characteristics. METHODS AND RESULTS The study was performed in patients with irritable bowel syndrome (IBS), Crohn's disease (CD), and ulcerative colitis (UC), by the administration of PHGG for six months while they continued their usual treatment. PHGG treatment caused significant changes in patients with IBS, including an increase in the abundance of short-chain fatty acid-producing bacteria, a significant decrease in Bacteroides abundance, and normalization of the Bristol scale of stool. In patients with UC, non-significant normalization of soft stools and decrease in fecal calprotectin were observed. Adverse events were not observed in any of the groups. CONCLUSION Thus, it would be beneficial to include PHGG in the usual drug therapies of patients with IBS. J. Med. Invest. 71 : 121-128, February, 2024.
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Affiliation(s)
| | - Takahisa Inoue
- Department of Medical Pharmacology, Tokushima University Graduate School, Tokushima, Japan
| | - Licht Miyamoto
- Laboratory of Pharmacology and Food Science, Department of Nutrition and Life Science, Kanagawa Institute of Technology, Kanagawa, Japan
| | | | | | | | - Koichiro Tsuchiya
- Department of Medical Pharmacology, Tokushima University Graduate School, Tokushima, Japan
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Munusamy R, Shanmugasundharam S. Improved gastric residence time of famotidine by raft-forming drug delivery system using DOE. Int J Immunopathol Pharmacol 2024; 38:3946320241249429. [PMID: 38721971 PMCID: PMC11084990 DOI: 10.1177/03946320241249429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 04/08/2024] [Indexed: 05/12/2024] Open
Abstract
OBJECTIVE This study investigated the raft-forming suspension of famotidine as an anti-reflux formulation to improve the oral bioavailability of narrow absorption window drugs by enhancing gastric residence time (GRT) and preventing gastro-esophageal reflux disease (GERD). METHOD Various combinations of raft-forming agents, such as Tragacanth gum (TG), guar gum (GG), and xanthan gum (XG), were evaluated alongside sodium alginate (SA) to develop an effective raft. Preformulation studies and preliminary screening were conducted to identify the most suitable raft-forming agent, and GG was chosen due to its mucilaginous properties. The formulation was optimized using a 32 full factorial design, with the quantities of GG and SA as independent factors and apparent viscosity and in-vitro drug release (%) as dependent factors. The in vivo floating behavior study was performed for optimized and stabilized formulation. RESULTS Among the tested batches, F6 was selected as the optimized formulation. It exhibited desirable characteristics such as adequate raft weight for extended floating in gastric fluid, improved apparent viscosity, and a significant percentage of drug release at 12 h. A mathematical model was applied to the in-vitro data to gain insights into the drug release mechanism of the formulation. The stability of the suspension was assessed under accelerated conditions, and it demonstrated satisfactory stability. The formulation remains floating in the Rabbit stomach for more than 12 h. CONCLUSION It concludes that the developed formulation has enhanced bioavailability in the combination of GG and SA. The floating layer of the raft prevents acid reflux, and the famotidine is retained for an extended period of time in the gastric region, preventing excess acid secretion. The developed formulations are effective for stomach ulcers and GERD, with the effect of reducing acid secretion by H2 receptor antagonists.
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Affiliation(s)
- Rajalakshmi Munusamy
- Department of Pharmaceutics, SRM College of Pharmacy, SRMIST, Kattankulathur, India
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Terasawa M, Hiramoto K, Uchida R, Suzuki K. Anti-Inflammatory Activity of Orally Administered Monostroma nitidum Rhamnan Sulfate against Lipopolysaccharide-Induced Damage to Mouse Organs and Vascular Endothelium. Mar Drugs 2022; 20:md20020121. [PMID: 35200650 PMCID: PMC8875490 DOI: 10.3390/md20020121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 01/31/2022] [Accepted: 02/01/2022] [Indexed: 02/04/2023] Open
Abstract
We previously reported that rhamnan sulfate (RS) purified from Monostroma nitidum significantly suppressed lipopolysaccharide (LPS)-induced inflammation in cultured human vascular endothelial cells. Here, we analyzed the effect of orally administered RS on LPS-induced damage to mouse organs and vascular endothelium. RS (1 mg) was orally administered daily to BALB/c mice, 50 μg of LPS was intraperitoneally administered on day 8, and Evans blue was injected into the tail vein 6 h later. After 30 min, LPS-treated mice showed pulmonary Evans blue leakage and elevated plasma levels of liver damage markers, whereas this reaction was suppressed in LPS + RS-treated mice. Immunohistochemical and Western blot analysis of mouse organs 24 h after LPS treatment showed significant neutrophil infiltration into the lung, liver, and jejunum tissues of LPS-treated mice and high expression levels of inflammation-related factors in these tissues. Expression levels of these factors were significantly suppressed in LPS + RS-treated mice. Analysis of lung glycocalyx showed a significant reduction in glycocalyx in LPS-treated mice but not in LPS + RS-treated mice. Levels of syndecan-4, one of the glycocalyx components, decreased in LPS-treated mice and increased in LPS + RS-treated mice. The current results suggest that orally administered RS protects organs and vascular endothelium from LPS-induced inflammation and maintains blood circulation.
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Affiliation(s)
- Masahiro Terasawa
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Minamitamagaki-cho 3500-3, Suzuka 513-8670, Mie, Japan; (M.T.); (K.H.); (R.U.)
- Konan Chemical Manufacturing, Co., Ltd., 1515 Kitagomizuka, Yokkaichi 510-0103, Mie, Japan
| | - Keiichi Hiramoto
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Minamitamagaki-cho 3500-3, Suzuka 513-8670, Mie, Japan; (M.T.); (K.H.); (R.U.)
| | - Ryota Uchida
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Minamitamagaki-cho 3500-3, Suzuka 513-8670, Mie, Japan; (M.T.); (K.H.); (R.U.)
- Konan Chemical Manufacturing, Co., Ltd., 1515 Kitagomizuka, Yokkaichi 510-0103, Mie, Japan
| | - Koji Suzuki
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Minamitamagaki-cho 3500-3, Suzuka 513-8670, Mie, Japan; (M.T.); (K.H.); (R.U.)
- Correspondence: ; Tel.: +81-59-340-0597
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Suresh H, Zhou J, Ho V. The Short-Term Effects and Tolerability of Low-Viscosity Soluble Fibre on Gastroparesis Patients: A Pilot Clinical Intervention Study. Nutrients 2021; 13:4298. [PMID: 34959850 PMCID: PMC8704257 DOI: 10.3390/nu13124298] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/22/2021] [Accepted: 11/26/2021] [Indexed: 12/13/2022] Open
Abstract
Gastroparesis is a motility disorder that causes severe gastric symptoms and delayed gastric emptying, where the majority of sufferers are females (80%), with 29% of sufferers also diagnosed with Type-1 or Type-2 diabetes. Current clinical recommendations involve stringent dietary restriction and includes the avoidance and minimization of dietary fibre. Dietary fibre lowers the glycaemic index of food, reduces inflammation and provides laxation. Lack of dietary fibre in the diet can affect long-term gastrointestinal health. Our previously published rheological study demonstrated that "low-viscosity" soluble fibres could be a potentially tolerable source of fibre for the gastroparetic population. A randomised controlled crossover pilot clinical study was designed to compare Partially-hydrolysed guar gum or PHGG (test fibre 1), gum Arabic (test fibre 2), psyllium husk (positive control) and water (negative control) in mild-to-moderate symptomatic gastroparesis patients (requiring no enteral tube feeding). The principal aim of the study was to determine the short-term physiological effects and tolerability of the test fibres. In n = 10 female participants, post-prandial blood glucose, gastroparesis symptoms, and breath test measurements were recorded. Normalized clinical data revealed that test fibres PHGG and gum Arabic were able to regulate blood glucose comparable to psyllium husk, while causing far fewer symptoms, equivalent to negative control. The test fibres did not greatly delay mouth-to-caecum transit, though more data is needed. The study data looks promising, and a longer-term study investigating these test fibres is being planned.
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Affiliation(s)
- Harsha Suresh
- School of Medicine, Western Sydney University, Campbelltown, NSW 2560, Australia; (H.S.); (V.H.)
- Gastrointestinal Motility Disorders Unit, Western Sydney University, Campbelltown, NSW 2560, Australia
| | - Jerry Zhou
- School of Medicine, Western Sydney University, Campbelltown, NSW 2560, Australia; (H.S.); (V.H.)
- Gastrointestinal Motility Disorders Unit, Western Sydney University, Campbelltown, NSW 2560, Australia
| | - Vincent Ho
- School of Medicine, Western Sydney University, Campbelltown, NSW 2560, Australia; (H.S.); (V.H.)
- Gastrointestinal Motility Disorders Unit, Western Sydney University, Campbelltown, NSW 2560, Australia
- University Medical Clinic of Camden & Campbelltown (UMCCC), Campbelltown, NSW 2560, Australia
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Rietbergen DD, Pereira Arias-Bouda LM, van der Hage J, Valdés Olmos RA. Does 99mTc-tilmanocept, as next generation radiotracer, meet with the requirements for improved sentinel node imaging? Rev Esp Med Nucl Imagen Mol 2021; 40:275-280. [PMID: 34425967 DOI: 10.1016/j.remnie.2020.09.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 07/20/2020] [Indexed: 11/18/2022]
Abstract
INTRODUCTION AND OBJECTIVES To evaluate the migration of 99mTc-tilmanocept from the injection site (IS) as well as the uptake in sentinel nodes (SNs) and non-SNs for lymphatic mapping in patients with breast cancer and melanoma, scheduled for SN biopsy after interstitial tracer administration. MATERIALS AND METHODS For 29 primary tumours in 28 patients (mean age: 62y, range: 45-81y) scheduled for SN biopsy planar images were acquired 10 and 120min after administration of 74MBq 99mTc-tilmanocept, in order to evaluate lymphatic drainage as well as uptake ratios between injection site (IS), SN and non-SN. SPECT-CT was performed immediately after delayed planar images to enable anatomical lymph node localization. RESULTS SNs were visualized in all patients (100%) with drainage to 34 basins. Uptake in non-SNs was perceived in 16 basins (47%). Number of SNs was concordant between early and delayed images in all basins excepting five (86%). In 24 patients tracer migrated to one lymph node basin (LNB), in three to 2 and in one to 4. When IS was included (N=29) on image, IS/SN ratio could be measured per LNB. The IS/SN ratio at 2h compared to 15min decreased with an average of 66% (range: 15-96%). SN/non-SN 2h ratio in LNBs with visible non-SNs averaged 6.6 (range: 2.3-15.6). In 9 patients with two SNs SN1/SN2 ratio averaged 1.9 on delayed images. At histopathology, SNs were found to be tumour positive in 7 basins (20%). CONCLUSION 99mTc-tilmanocept appears to meet the requirements for improved SN imaging in breast cancer and melanoma on the basis of early and persistent SN visualization frequently accompanied by no or markedly less non-SN uptake. This is associated to rapid migration from the injection site together with increasing SN uptake and retention as expressed by decreasing IS/SN and persistently high SN/non-SN ratios. Further head-to-head comparison of 99mTc-tilmanocept with standard SN radiotracers in larger series of patients is necessary.
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Affiliation(s)
- D D Rietbergen
- Nuclear Medicine Section & Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Centre, Albinusdreef 2, 2333 ZA Leiden, Netherlands.
| | - L M Pereira Arias-Bouda
- Nuclear Medicine Section & Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Centre, Albinusdreef 2, 2333 ZA Leiden, Netherlands; Department of Nuclear Medicine, Alrijne Ziekenhuis, Leiderdorp, Netherlands
| | - J van der Hage
- Department of Surgery, Department of Radiology, Leiden University Medical Centre, Netherlands
| | - R A Valdés Olmos
- Nuclear Medicine Section & Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Centre, Albinusdreef 2, 2333 ZA Leiden, Netherlands; Department of Radiology and Nuclear Medicine, Onze Lieve Vrouwe Gasthuis, Amsterdam, Netherlands
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9
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Zaman M, Akhtar F, Baseer A, Hasan SMF, Aman W, Khan A, Badshah M, Majeedullah . Formulation development and in-vitro evaluation of gastroretentive drug delivery system of loxoprofen sodium: A natural excipients based approach. Pak J Pharm Sci 2021; 34:57-63. [PMID: 34248003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The limitations of conventional type delivery systems to retain drug (s) in the stomach has resulted in the development of novel gastroretentive drug delivery system. We developed single-layer effervescent floating tablets of loxoprofen sodium for prolong delivery in the stomach using natural polymers xanthan gum, guar gum and semisynthetic polymer HPMCK4M. All the formulations (F1-F9) were developed by varying concentrations of xanthan gum and HPMCK4M while guar gum concentration was kept constant. Two gas generating agent (s) incorporated were sodium bicarbonate and citric acid. All compendial pre and post-compression tests results were in the acceptable limits. FTIR analysis confirmed drug-polymer compatibility. The in-vitro drug release in simulated conditions i.e., 0.1 N HCl for 12 h revealed orderly increase in total floating time, i.e., less than 6 h for F1 over 12 h for F9. Formulations F1 to F4 were not capable to retard drug release up to 12 h, whereas F5-F7 for 12 h, while F8 and F9 for more than 12 h. Data fitting in various kinetic models showed that drug release best fit in first order kinetic model and F9 in zero order. Based on results data, F7 was the best among all.
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Affiliation(s)
- Muhammad Zaman
- Faculty of Pharmacy, University of Central Punjab, Lahore, Pakistan
| | - Faiza Akhtar
- Faculty of Pharmacy, University of Lahore, Lahore, Pakistan
| | - Abdul Baseer
- Department of Pharmacy, Abasyn University Peshawar, Pakistan
| | - Syed Muhammad Farid Hasan
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, Pakistan
| | - Waqar Aman
- Department of Pharmacy, Kohat University of Science and Technology, Kohat, Pakistan
| | - Amjad Khan
- Department of Pharmacy, Kohat University of Science and Technology, Kohat, Pakistan
| | - Munair Badshah
- Islam college of Pharmacy, Pasrur Road, Sialkot, Punjab Pakistan
| | - - Majeedullah
- Department of Pharmacy, Kohat University of Science and Technology, Kohat, Pakistan
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Tanihiro R, Sakano K, Oba S, Nakamura C, Ohki K, Hirota T, Sugiyama H, Ebihara S, Nakamura Y. Effects of Yeast Mannan Which Promotes Beneficial Bacteroides on the Intestinal Environment and Skin Condition: A Randomized, Double-Blind, Placebo-Controlled Study. Nutrients 2020; 12:nu12123673. [PMID: 33260560 PMCID: PMC7761098 DOI: 10.3390/nu12123673] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 11/25/2020] [Accepted: 11/26/2020] [Indexed: 12/18/2022] Open
Abstract
Yeast mannan (YM) is an indigestible water-soluble polysaccharide of the yeast cell wall. In vitro fecal fermentation studies showed that YM could exhibit a notable prebiotic effect. The aim of this randomized, double-blind, placebo-controlled study was to assess the efficacy of YM intake on the intestinal environment and skin condition. One hundred and ten healthy female subjects aged 30–49 years were supplemented with YM or placebo for eight weeks. Skin dryness was set as the primary endpoint. No side effects were observed during the study. Microbiota analyses revealed that YM intake selectively increased the relative abundance of Bacteroides thetaiotaomicron and Bacteroides ovatus compared to that by placebo. Feces and urine analyses showed that YM intake lowered the concentration of fecal p-cresol, indole, and skatole, and elevated urinal equol levels compared to those in placebo. Furthermore, YM supplementation ameliorated subjective skin dryness. This study suggests that YM intake could promote beneficial Bacteroides and improve the intestinal environment and skin condition.
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Affiliation(s)
- Reiko Tanihiro
- Core Technology Laboratories, Asahi Quality and Innovations, Ltd., 1-21, Midori 1-chome, Moriya-shi, Ibaraki 302-0106, Japan; (K.S.); (S.O.); (C.N.); (K.O.); (T.H.); (H.S.); (Y.N.)
- Correspondence: ; Tel.: +81-297-46-9347
| | - Katsuhisa Sakano
- Core Technology Laboratories, Asahi Quality and Innovations, Ltd., 1-21, Midori 1-chome, Moriya-shi, Ibaraki 302-0106, Japan; (K.S.); (S.O.); (C.N.); (K.O.); (T.H.); (H.S.); (Y.N.)
| | - Shunsuke Oba
- Core Technology Laboratories, Asahi Quality and Innovations, Ltd., 1-21, Midori 1-chome, Moriya-shi, Ibaraki 302-0106, Japan; (K.S.); (S.O.); (C.N.); (K.O.); (T.H.); (H.S.); (Y.N.)
| | - Chikako Nakamura
- Core Technology Laboratories, Asahi Quality and Innovations, Ltd., 1-21, Midori 1-chome, Moriya-shi, Ibaraki 302-0106, Japan; (K.S.); (S.O.); (C.N.); (K.O.); (T.H.); (H.S.); (Y.N.)
| | - Kohji Ohki
- Core Technology Laboratories, Asahi Quality and Innovations, Ltd., 1-21, Midori 1-chome, Moriya-shi, Ibaraki 302-0106, Japan; (K.S.); (S.O.); (C.N.); (K.O.); (T.H.); (H.S.); (Y.N.)
| | - Tatsuhiko Hirota
- Core Technology Laboratories, Asahi Quality and Innovations, Ltd., 1-21, Midori 1-chome, Moriya-shi, Ibaraki 302-0106, Japan; (K.S.); (S.O.); (C.N.); (K.O.); (T.H.); (H.S.); (Y.N.)
| | - Hiroshi Sugiyama
- Core Technology Laboratories, Asahi Quality and Innovations, Ltd., 1-21, Midori 1-chome, Moriya-shi, Ibaraki 302-0106, Japan; (K.S.); (S.O.); (C.N.); (K.O.); (T.H.); (H.S.); (Y.N.)
| | - Shukuko Ebihara
- Chiyoda Paramedical Care Clinic, 3-3-5 Uchikanda, Chiyoda-ku, Tokyo 101-0047, Japan;
| | - Yasunori Nakamura
- Core Technology Laboratories, Asahi Quality and Innovations, Ltd., 1-21, Midori 1-chome, Moriya-shi, Ibaraki 302-0106, Japan; (K.S.); (S.O.); (C.N.); (K.O.); (T.H.); (H.S.); (Y.N.)
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Lu ZY, Jiang WD, Wu P, Liu Y, Kuang SY, Tang L, Yang J, Zhou XQ, Feng L. Mannan oligosaccharides supplementation enhanced head-kidney and spleen immune function in on-growing grass carp (Ctenopharyngodon idella). Fish Shellfish Immunol 2020; 106:596-608. [PMID: 32841685 DOI: 10.1016/j.fsi.2020.08.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/14/2020] [Accepted: 08/20/2020] [Indexed: 06/11/2023]
Abstract
This research investigates the influences of dietary mannan oligosaccharides (MOS) on the head-kidney and spleen immune function in on-growing grass carp (Ctenopharyngodon idella) and its related mechanism. Fish were fed during 60 days at different levels of MOS (0, 200, 400, 600, 800 and 1000 mg kg-1). Subsequently, 14 days after the feeding trial was injected intraperitoneally with Aeromonas hydrophila, the immune function was studied. The results are as follows: (1) appropriate MOS supplementation could increase the content of antibacterial compound and immunoglobulin (Ig), up-regulate antimicrobial peptides transcriptional levels in these two organs; (2) appropriate MOS supplementation attenuated inflammatory response in these two organs by regulating cytokines (pro- and anti-inflammatory cytokines) and related signalling pathways (NF-κB and TOR). The interesting points though, was, no differences were found in liver-expressed antimicrobial peptide (LEAP)-2A, interleukin (IL)-8, IL-4/13B, IκB kinase (IKK) α and nuclear factor kappa B (NF-κB) p52 gene expression in these two organs. Consequently, the present research suggests that MOS supplementation can enhance head-kidney and spleen immune function. Finally, we obtained these appropriate MOS dose (538.5 and 585.8 mg kg-1) by quadratic regression analysis of lysozyme activity (head-kidney) and phosphatase activity (spleen), respectively.
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Affiliation(s)
- Zhi-Yuan Lu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wei-Dan Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China
| | - Pei Wu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yang Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China
| | - Sheng-Yao Kuang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Ling Tang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Juan Yang
- Enterprise Technology Center, Tongwei Co., Ltd, Chengdu, 610041, China
| | - Xiao-Qiu Zhou
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China.
| | - Lin Feng
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China.
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12
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Shang L, Wang Y, Ren Y, Ai T, Zhou P, Hu L, Wang L, Li J, Li B. In vitro gastric emptying characteristics of konjac glucomannan with different viscosity and its effects on appetite regulation. Food Funct 2020; 11:7596-7610. [PMID: 32869813 DOI: 10.1039/d0fo01104e] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Konjac glucomannan (KGM) is associated with the satiety-enhancing property by imparting the food matrix with high viscosity. In the present study, rheology tests on KGM sol with different viscosities were conducted to understand its flow behavior as they presented in the mouth and stomach, and the in vitro gastric emptying characteristics of KGM were examined with a human gastric simulator. Then, their effects on subjective appetite, glycemia, and appetite-related hormones (insulin, GLP-1, PYY3-36, CCK-8, ghrelin) response were investigated by conducting a randomized, single-blind, crossover trial in 22 healthy adults (11 female and 11 male, mean age (years): 23.2 ± 2.0, BMI (kg m-2): 20.6 ± 2.1). The blood samples and ratings for subjective appetite were collected at regular time intervals after the subjects were fed with four test breakfasts (one control treatment and three experimental treatments) on four different days. An ad libitum lunch was provided to the subjects once they consumed the breakfasts and their food intake was recorded. As the viscosity increased, the gastric emptying rate was delayed despite a large part of the chyme viscosity lost during digestion. The satiating capacity of the test breakfast was significantly enhanced as its viscosity increased, the and subjects' sensation for hunger, fullness, desire-to-eat, and prospective food consumption differed significantly (p = 0.006, 0.000, 0.002, and 0.001, respectively) between the treatments. The secretion of glycemia and satiety-related hormones were beneficially modulated by the increased viscosity of the test meal but a small decrease in the ad libitum food intake was observed after the intervention of the viscous test breakfasts. Overall, elevating the meal viscosity moderately by using KGM could contribute to combating the challenge of hunger for people in the bodyweight management.
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Affiliation(s)
- Longchen Shang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. and Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China
| | - Yi Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. and Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China
| | - Yanyan Ren
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. and Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China
| | - Tingyang Ai
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. and Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China
| | - Peiyuan Zhou
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. and Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China
| | - Ling Hu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. and Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China
| | - Ling Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. and Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China
| | - Jing Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. and Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China
| | - Bin Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. and Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China
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Dawood MAO, El-Shamaa IS, Abdel-Razik NI, Elkomy AH, Gewaily MS, Abdo SE, Soliman AA, Paray BA, Abdelkhalek N. The effect of mannanoligosaccharide on the growth performance, histopathology, and the expression of immune and antioxidative related genes in Nile tilapia reared under chlorpyrifos ambient toxicity. Fish Shellfish Immunol 2020; 103:421-429. [PMID: 32470510 DOI: 10.1016/j.fsi.2020.05.061] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 05/19/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
The role of mannanoligosaccharide (MOS) in reducing the adverse effects of chlorpyrifos (CPF) toxicity in tilapia was evaluated in the present study. Fish were allotted into four groups and fed the basal diet or MOS and exposed to CPF (control, CPF, MOS, and MOS/CPF) for 30 days. Fish fed MOS revealed higher growth and survival rates and lower FCR than CPF-intoxicated fish (P < 0.05). The Hb, PCV, RBCs, and WBCs variables were lowered by CPF toxicity and increased by MOS (P < 0.05). The values of total protein (sTP), albumin (ALB), globulin (GLB), lysozyme (LZM), and phagocytic activities (PA) decreased whereas, ALP, ALT, AST, urea, bilirubin (BIL), and creatinine (CR) were increased by CPF toxicity. However, dietary MOS increased the sTP, ALB, GLB, LZM, and PA and decreased the ALP, ALT, AST, BIL, and CR. The PA and phagocytic index displayed higher levels by MOS feeding than the other groups (P < 0.05). The lowest mRNA level of GPX1 (cellular GPX) gene was observed in fish of the CPF group, while the highest level was shown in the MOS/CPF group (P < 0.05). Fish in the control and CPF groups displayed downregulated CAT whereas the expression of GPX and CAT genes was higher in fish of the MOS/CPF group than fish in the MOS group (P < 0.05). MOS upregulated the expression of HSP70 gene with CPF toxicity. Fish of the CPF and MOS/CPF groups displayed upregulated CASP3, IFN-γ, and IL-8 genes. Fish of the CPF group exhibited the lowest IL-1β, while fish of the MOS/CPF group showed upregulated IL-1β. The intoxication with CPF induced histopathological inflammations in the gills, intestine, and liver tissues, while dietary MOS protected against inflammation. In summary, dietary MOS is recommended as an immunostimulant to counteract the inflammatory impacts of waterborne CPF toxicity in Nile tilapia.
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Affiliation(s)
- Mahmoud A O Dawood
- Department of Animal Production, Faculty of Agriculture, Kafrelsheikh University, Egypt.
| | - Ibrahim S El-Shamaa
- Department of Animal Production, Faculty of Agriculture, Kafrelsheikh University, Egypt
| | - Nagwa I Abdel-Razik
- Department of Animal Production, Faculty of Agriculture, Kafrelsheikh University, Egypt
| | - Azza H Elkomy
- Department of Animal Production, Faculty of Agriculture, Kafrelsheikh University, Egypt
| | - Mahmoud S Gewaily
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Kafrelsheikh University, Egypt
| | - Safaa E Abdo
- Department of Animal Wealth Development, Faculty of Veterinary Medicine, Kafrelsheikh University, Egypt
| | - Ali A Soliman
- Fish Nutrition Laboratory, Aquaculture Division, National Institute of Oceanography and Fisheries, Alexandria, Egypt
| | - Bilal Ahamad Paray
- Department of Zoology, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
| | - Nevien Abdelkhalek
- Internal Medicine, Infectious and Fish Diseases Department, Faculty of Veterinary Medicine, Mansoura University, Egypt.
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Bloomer RJ, Butawan M, van der Merwe M, Keating FH. An Assessment of the Glyconutrient Ambrotose™ on Immunity, Gut Health, and Safety in Men and Women: A Placebo-Controlled, Double-Blind, Randomized Clinical Trial. Nutrients 2020; 12:nu12061751. [PMID: 32545396 PMCID: PMC7353283 DOI: 10.3390/nu12061751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/01/2020] [Accepted: 06/05/2020] [Indexed: 12/14/2022] Open
Abstract
Background: Certain dietary fibers have been reported to improve gut health and cellular immunity. Ambrotose is a glyconutrient supplement that contains mannose-rich polysaccharides (acemannan), reported to improve immune function. A more nutrient-dense version of this dietary supplement has been developed recently, with added aloe leaf gel powder (acemannan). The purpose of this study was to evaluate the impact of the traditional and newly developed Ambrotose products on immunity, gut health, and psychological well-being in healthy men and women. Methods: Seventy-five men and women were randomly assigned in double-blind manner to one of five treatments, as follows: Ambrotose Advanced (AA) at 2 or 4 g daily, Ambrotose LIFE (AL) at 2 or 4 g daily, or placebo. Subjects ingested their assigned treatment daily for eight weeks. Resting heart rate, blood pressure, and measures of psychological well-being were analyzed before and after four and eight weeks of supplementation. Blood samples were collected at the same times and analyzed for zonulin, hematology measures, and cytokines—IL-6, IL-10, IL-1β, and TNF-α (analyzed both with and without stimulation via lipopolysaccharide [LPS]). Results: All Ambrotose treatments were well-tolerated. There were no differences among treatments in heart rate or blood pressure across time. Self-reported well-being scores were generally higher for the Ambrotose treatments but there were no changes of statistical significance across time (p > 0.05). Differences of statistical significance were noted for select biochemical variables, the most notable being a dramatic decrease in monocytes in the Ambrotose groups. No change was noted in the cytokine response to LPS stimulation in all groups, indicating a maintenance of a healthy immune response. Conclusion:Regular supplementation with Ambrotose is safe and can improve subclinical cellular adversity (as evidenced by a decrease in monocytes), without unnecessary activation of an immune response.
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Reider SJ, Moosmang S, Tragust J, Trgovec-Greif L, Tragust S, Perschy L, Przysiecki N, Sturm S, Tilg H, Stuppner H, Rattei T, Moschen AR. Prebiotic Effects of Partially Hydrolyzed Guar Gum on the Composition and Function of the Human Microbiota-Results from the PAGODA Trial. Nutrients 2020; 12:nu12051257. [PMID: 32354152 PMCID: PMC7281958 DOI: 10.3390/nu12051257] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 04/24/2020] [Accepted: 04/26/2020] [Indexed: 12/13/2022] Open
Abstract
(1) Background: Alterations in the structural composition of the human gut microbiota have been identified in various disease entities along with exciting mechanistic clues by reductionist gnotobiotic modeling. Improving health by beneficially modulating an altered microbiota is a promising treatment approach. Prebiotics, substrates selectively used by host microorganisms conferring a health benefit, are broadly used for dietary and clinical interventions. Herein, we sought to investigate the microbiota-modelling effects of the soluble fiber, partially hydrolyzed guar gum (PHGG). (2) Methods: We performed a 9 week clinical trial in 20 healthy volunteers that included three weeks of a lead-in period, followed by three weeks of an intervention phase, wherein study subjects received 5 g PHGG up to three times per day, and concluding with a three-week washout period. A stool diary was kept on a daily basis, and clinical data along with serum/plasma and stool samples were collected on a weekly basis. PHGG-induced alterations of the gut microbiota were studied by 16S metagenomics of the V1–V3 and V3–V4 regions. To gain functional insight, we further studied stool metabolites using nuclear magnetic resonance (NMR) spectroscopy. (3) Results: In healthy subjects, PHGG had significant effects on stool frequency and consistency. These effects were paralleled by changes in α- (species evenness) and β-diversity (Bray–Curtis distances), along with increasing abundances of metabolites including butyrate, acetate and various amino acids. On a taxonomic level, PHGG intake was associated with a bloom in Ruminococcus, Fusicatenibacter, Faecalibacterium and Bacteroides and a reduction in Roseburia, Lachnospiracea and Blautia. The majority of effects disappeared after stopping the prebiotic and most effects tended to be more pronounced in male participants. (4) Conclusions: Herein, we describe novel aspects of the prebiotic PHGG on compositional and functional properties of the healthy human microbiota.
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Affiliation(s)
- Simon J. Reider
- Christian Doppler Laboratory for Mucosal Immunology, Medical University Innsbruck, 6020 Innsbruck, Austria; (S.J.R.); (J.T.); (N.P.)
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology & Metabolism, Medical University Innsbruck, 6020 Innsbruck, Austria;
| | - Simon Moosmang
- Institute of Pharmacy/Pharmacognosy & Center for Molecular Biosciences Innsbruck, Leopold-Franzens Universität, 6020 Innsbruck, Austria; (S.M.); (S.S.); (H.S.)
| | - Judith Tragust
- Christian Doppler Laboratory for Mucosal Immunology, Medical University Innsbruck, 6020 Innsbruck, Austria; (S.J.R.); (J.T.); (N.P.)
| | - Lovro Trgovec-Greif
- Division of Computational Systems Biology, Department of Microbiology, University of Vienna, 1010 Vienna, Austria; (L.T.-G.); (L.P.); (T.R.)
| | - Simon Tragust
- General Zoology Institute of Biology, University Halle, 06108 Halle, Germany;
| | - Lorenz Perschy
- Division of Computational Systems Biology, Department of Microbiology, University of Vienna, 1010 Vienna, Austria; (L.T.-G.); (L.P.); (T.R.)
| | - Nicole Przysiecki
- Christian Doppler Laboratory for Mucosal Immunology, Medical University Innsbruck, 6020 Innsbruck, Austria; (S.J.R.); (J.T.); (N.P.)
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology & Metabolism, Medical University Innsbruck, 6020 Innsbruck, Austria;
| | - Sonja Sturm
- Institute of Pharmacy/Pharmacognosy & Center for Molecular Biosciences Innsbruck, Leopold-Franzens Universität, 6020 Innsbruck, Austria; (S.M.); (S.S.); (H.S.)
| | - Herbert Tilg
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology & Metabolism, Medical University Innsbruck, 6020 Innsbruck, Austria;
| | - Hermann Stuppner
- Institute of Pharmacy/Pharmacognosy & Center for Molecular Biosciences Innsbruck, Leopold-Franzens Universität, 6020 Innsbruck, Austria; (S.M.); (S.S.); (H.S.)
| | - Thomas Rattei
- Division of Computational Systems Biology, Department of Microbiology, University of Vienna, 1010 Vienna, Austria; (L.T.-G.); (L.P.); (T.R.)
| | - Alexander R. Moschen
- Christian Doppler Laboratory for Mucosal Immunology, Medical University Innsbruck, 6020 Innsbruck, Austria; (S.J.R.); (J.T.); (N.P.)
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology & Metabolism, Medical University Innsbruck, 6020 Innsbruck, Austria;
- Correspondence:
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Xu C, Cheng C, Zhang X, Peng J. Inclusion of Soluble Fiber in the Gestation Diet Changes the Gut Microbiota, Affects Plasma Propionate and Odd-Chain Fatty Acids Levels, and Improves Insulin Sensitivity in Sows. Int J Mol Sci 2020; 21:ijms21020635. [PMID: 31963640 PMCID: PMC7013540 DOI: 10.3390/ijms21020635] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 01/06/2020] [Accepted: 01/15/2020] [Indexed: 12/31/2022] Open
Abstract
The transition from pregnancy to lactation is characterized by a progressive decrease in insulin sensitivity. Propionate increases with dietary fiber consumption and has been shown to improve insulin sensitivity. Recent studies suggest that plasma odd-chain fatty acids [OCFAs; pentadecanoic acid (C15:0) and heptadecanoic acid (C17:0)] that inversely correlated with insulin resistance are synthesized endogenously from gut-derived propionate. The present study investigated the effects of soluble fiber during gestation on gut microbiota, plasma non-esterified fatty acids and insulin sensitivity in sows. Sows were allocated to either control or 2.0% guar gum plus pregelatinized waxy maize starch (SF) dietary treatment during gestation. The SF addition changes the structure and composition of gut microbiota in sows. Genus Eubacterium increased by SF addition may promote intestinal propionate production. Moreover, the dietary SF increased circulating levels of plasma OCFAs, especially C17:0. The SF-fed sows had a higher insulin sensitivity and a lower systemic inflammation level during perinatal period. Furthermore, the plasma C15:0 and C17:0 was negatively correlated with the area under curve of plasma glucose after meal and plasma interleukin-6. In conclusion, dietary SF improves insulin sensitivity and alleviates systemic inflammation in perinatal sows, potentially related to its stimulating effect on propionate and OCFAs production.
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Affiliation(s)
- Chuanhui Xu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (C.X.); (C.C.); (X.Z.)
| | - Chuanshang Cheng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (C.X.); (C.C.); (X.Z.)
- Key Laboratory of Animal Nutrition and Feed Science, Ministry of Agriculture and Rural Affairs, WENS Research Institute (Technology center), Yunfu 527300, China
| | - Xiu Zhang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (C.X.); (C.C.); (X.Z.)
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (C.X.); (C.C.); (X.Z.)
- The Cooperative Innovation Centre for Sustainable Pig Production, Wuhan 430070, China
- Correspondence:
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Watson LE, Phillips LK, Wu T, Bound MJ, Checklin H, Grivell J, Jones KL, Horowitz M, Rayner CK. Title: Differentiating the effects of whey protein and guar gum preloads on postprandial glycemia in type 2 diabetes. Clin Nutr 2019; 38:2827-2832. [PMID: 30583967 DOI: 10.1016/j.clnu.2018.12.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 12/09/2018] [Accepted: 12/10/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS Whey protein and guar gum have both been reported to reduce postprandial glycemia in health and type 2 diabetes, associated with stimulation of glucagon-like peptide-1 (GLP-1) and/or slowing of gastric emptying. Our aim was to evaluate, in type 2 diabetes, the acute effects of low dose "preloads" of whey and guar, given alone or in combination before a meal, on postprandial glycemia, insulin, GLP-1, and gastric emptying. METHODS 21 patients with type 2 diabetes, managed by diet or metformin alone, were each studied on 4 days. They received a preload "shake" 15min before a mashed potato meal (368.5 kcal) labeled with 13C-octanoic-acid. The preloads comprised either (i) 17 g whey (W), (ii) 5 g guar (G), (iii) 17 g whey + 5 g guar (WG) each sweetened with 60 mg sucralose, and (iv) 60 mg sucralose alone (control; C), all dissolved in 150 mL water. Venous blood was sampled frequently for measurements of glucose, insulin, and GLP-1 concentrations. Gastric half-emptying time (T50) was calculated from breath 13CO2 excretion over 240 min. RESULTS Postprandial blood glucose concentrations were lower with W and WG compared to C (each P < 0.0001, treatment × time interaction), and lower after G than C only at 30min. Insulin, GLP-1, and glucagon concentrations were higher after W than WG, G, or C (P < 0.05, treatment × time interaction), without differences between the latter three. Gastric emptying was slower with W (T50: 179.6 ± 6.1 min, P < 0.05) and WG (T50: 197.6 ± 9.7 min, P < 0.0001) when compared to C (T50: 162.9 ± 6.2 min), but did not differ between G (T50: 171.3 ± 7.0) and C (P > 0.99). CONCLUSION Both whey and whey/guar preloads reduced postprandial glycemia, associated with slowing of gastric emptying. Low dose guar was less effective as a preload for glucose-lowering and did not slow gastric emptying. CLINICAL TRIAL REGISTRY NUMBER AND WEBSITE Australian and New Zealand Clinical Trials Registry, Trial ID ACTRN12615001272583, http://www.anzctr.org.au.
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Affiliation(s)
- Linda E Watson
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - Liza K Phillips
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - Tongzhi Wu
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - Michelle J Bound
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - Helen Checklin
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - Jacqueline Grivell
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - Karen L Jones
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - Michael Horowitz
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
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Soumeh E, Mohebodini H, Toghyani M, Shabani A, Ashayerizadeh A, Jazi V. Synergistic effects of fermented soybean meal and mannan-oligosaccharide on growth performance, digestive functions, and hepatic gene expression in broiler chickens. Poult Sci 2019; 98:6797-6807. [PMID: 31347672 PMCID: PMC8913979 DOI: 10.3382/ps/pez409] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 06/27/2019] [Indexed: 01/14/2023] Open
Abstract
This study investigated the effects of fermented soybean meal (FSBM) with or without mannan-oligosaccharide (MOS) prebiotic on growth performance, digestive functions, and hepatic IGF-1 gene expression of broiler chicken. A total of 480 day-old male broiler chickens were fed with 4 experimental diets for 6 wk. Experimental diets included corn-soybean meal diet (CON); corn-soybean meal diet + MOS prebiotic [0.2%, ActiveMOS; Biorigin, Brazile]; corn-FSBM diet [soybean meal (SBM) was totally replaced by FSBM]; and corn-FSBM + MOS prebiotic (MIX). Replacing dietary SBM with FSBM with or without MOS improved body weight gain and feed efficiency for the total grow-out period. However, the addition of MOS to the FSBM diet exhibited a greater body weight gain than other experimental diets. Villus height and villus height to crypt depth of the duodenum and jejunum were increased by feeding FSBM, MOS, and MIX diets. The ileal crude protein and energy digestibilities, as well as the activities of intestinal amylase and protease, and pancreatic protease, were improved by replacing SBM with FSBM, with or without MOS. The concentration of plasma 3-methylhistidine was reduced by FSBM and MOS, and synergistically by their combination. The MOS and FSBM diets upregulated the hepatic IGF-1 gene expression. However, there was an evident synergistic effect of FSBM supplemented with MOS in the upregulation of the hepatic IGF-1 gene expression. The outcomes of the current study indicate the FSBM and MOS had the potential to improve growth performance, hepatic IGF-1 expression, and intestinal morphology of broilers. Overall, the fermented products could be considered as functional feed that exhibits probiotic effects and the synergistic effects of prebiotics added to the fermented feeds may further improve the growth performance and gut health and functionality in broiler chicken.
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Affiliation(s)
- E.A. Soumeh
- School of Agriculture and Food Science, University of Queensland, Gatton Campus, QLD 4343, Australia
| | - H. Mohebodini
- Department of Animal Sciences, University of Mohaghegh Ardabili, Ardabil 56199-11367, Iran
| | - M. Toghyani
- Department of Animal Science, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan 8155139999, Iran
| | - A. Shabani
- Department of Animal and Poultry Nutrition, Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan 49189-4364, Iran
| | - A. Ashayerizadeh
- Department of Animal and Poultry Nutrition, Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan 49189-4364, Iran
| | - V. Jazi
- Department of Animal and Poultry Nutrition, Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan 49189-4364, Iran
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Stringa P, Toledano V, Papa-Gobbi R, Arreola M, Largo C, Machuca M, Aguirre LA, Rumbo M, López-Collazo E, Hernández Oliveros F. Galactomannan as a Potential Modulator of Intestinal Ischemia-Reperfusion Injury. J Surg Res 2019; 249:232-240. [PMID: 31796217 DOI: 10.1016/j.jss.2019.10.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/30/2019] [Accepted: 10/20/2019] [Indexed: 01/20/2023]
Abstract
BACKGROUND Galactomannan (GAL), a polysaccharide present on the cell wall of several fungi, has shown an ability to modulate inflammatory responses through the dectin-1 receptor in human macrophages. However, studies evaluating the modulatory properties of this polysaccharide in in vivo inflammatory scenarios are scarce. We hypothesized that GAL pretreatment would modulate local and remote damage related to intestinal reperfusion after an ischemic insult. MATERIALS AND METHODS Adult male Balb/c mice were subjected to intestinal ischemia-reperfusion injury by reversible occlusion of the superior mesenteric artery, consisting of 45 min of ischemia followed by 3 or 24 h of reperfusion. Intragastric GAL (70 mg/kg) was administered 12 h before ischemia, and saline solution was used in the control animals. Jejunum, lung, and blood samples were taken for the analysis of histology, gene expression, plasma cytokine levels, and nitrosative stress. RESULTS Intestinal and lung histologic alterations were attenuated by GAL pretreatment, showing significant differences compared with nontreated animals. Interleukin 1β, monocyte chemoattractant protein 1, and IL-6 messenger RNA expression were considerably downregulated in the small intestine of the GAL group. In addition, GAL treatment significantly prevented plasma interleukin 6 and monocyte chemoattractant protein 1 upregulation and diminished nitrate and nitrite levels after 3 h of intestinal reperfusion. CONCLUSIONS GAL pretreatment constitutes a novel and promising therapy to reduce local and remote damage triggered by intestinal ischemia-reperfusion injury. Further in vivo and in vitro studies to understand GAL's modulatory effects are warranted.
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Affiliation(s)
- Pablo Stringa
- Transplant Group, Experimental Surgery, IdiPAZ, La Paz University Hospital, Madrid, Spain; Tumor Immunology Laboratory, IdiPAZ, La Paz University Hospital, Madrid, Spain
| | - Victor Toledano
- Tumor Immunology Laboratory, IdiPAZ, La Paz University Hospital, Madrid, Spain; Innate Immunity Group, IdiPAZ, La Paz University Hospital, Madrid, Spain
| | - Rodrigo Papa-Gobbi
- Transplant Group, Experimental Surgery, IdiPAZ, La Paz University Hospital, Madrid, Spain
| | - Miguel Arreola
- Transplant Group, Experimental Surgery, IdiPAZ, La Paz University Hospital, Madrid, Spain
| | - Carlota Largo
- Transplant Group, Experimental Surgery, IdiPAZ, La Paz University Hospital, Madrid, Spain
| | - Mariana Machuca
- Special Pathology Laboratory, Faculty of Veterinary Sciences, National University of La Plata, La Plata, Buenos Aires, Argentina
| | - Luis A Aguirre
- Tumor Immunology Laboratory, IdiPAZ, La Paz University Hospital, Madrid, Spain; Innate Immunity Group, IdiPAZ, La Paz University Hospital, Madrid, Spain
| | - Martin Rumbo
- Institute for Immunological and Physiopathological Studies (IIFP-CONICET-UNLP), National University of La Plata, La Plata, Buenos Aires, Argentina
| | - Eduardo López-Collazo
- Tumor Immunology Laboratory, IdiPAZ, La Paz University Hospital, Madrid, Spain; Innate Immunity Group, IdiPAZ, La Paz University Hospital, Madrid, Spain.
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Meng X, Yang X, Lin G, Fang Y, Ruan Z, Liu M, Liu G, Li M, Yang D. Mannan oligosaccharide increases the growth performance, immunity and resistance capability against Vibro Parahemolyticus in juvenile abalone Haliotis discus hannai Ino. Fish Shellfish Immunol 2019; 94:654-660. [PMID: 31561025 DOI: 10.1016/j.fsi.2019.09.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 09/20/2019] [Accepted: 09/23/2019] [Indexed: 06/10/2023]
Abstract
This trial was conducted to investigate the effect of mannose oligosaccharides (MOS) on the growth performance, antioxidation, immunity and disease resistance of Vibro Parahemolyticus in juvenile abalone Haliotis discus hannai Ino. Four formulated diets were produced to contain 0.00 g/kg, 0.40 g/kg, 0.80 g/kg and 1.60 g/kg Actigen®, with functional ingredients of MOS, respectively. Accordingly, the experimental diets were named as A0, A4, A8 and A16. After 120-days feeding trial, the best growth performance was observed in A8 group (P < 0.05) and there was no significant difference in A0, A4 and A16 groups. With the increase of dietary MOS, the activity of the total antioxidant capacity in hepatopancreas is increasingly elevated (P < 0.05) while no significant difference was observed on activity of glutathione S-transferase (P > 0.05). The activities of superoxide dismutase and glutathione peroxidase were firstly increased and then decreased, with the highest values in A8 group (P < 0.05). Immune-related parameters were significantly affected by dietary MOS inclusion. Specifically, the activities of alkaline phosphatase and acid phosphatase in hepatopancreas and serum of abalone fed diets containing MOS were significantly higher than those of control A0 group (P < 0.05). Moreover, the highest values of both enzymes were observed in hepatopancreas of A8 group but in serum of A16 group, respectively. The lysozyme activities in hepatopancreas and serum of A4 group were significantly higher than those of other groups (P < 0.05) and there was no significant difference in A0, A8 and A16 groups (P > 0.05). The activities of cytophagy and respiratory burst in serum of abalone were not significantly affected by dietary MOS content (P > 0.05). The mRNA levels of focal adhesion kinase and integrin-linked kinase were gradually elevated with the increase of dietary MOS, with the highest value recorded in A16 group (P < 0.05). The gene expression of caspse-3 in A8 group was dramatically higher than those of other groups (P < 0.05) and there was no significant difference in A0, A4 and A16 groups (P > 0.05). The mRNA level of nuclear factor-κB was not significantly affected by dietary MOS (P > 0.05). During 56 h of V. Parahemolyticus challenge period, the accumulated mortality rate of abalone fed diets containing MOS were significantly lower than that of control A0 group in each time point (P < 0.05). Overall, the lowest rate was happened in A8 group (P < 0.05). In conclusion, MOS inclusion in diet has obviously positive effect on growth, immunity and disease resistance capability of abalone, with the optimal level of Actigen® at 0.80 g/kg in diet.
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Affiliation(s)
- Xiaoxue Meng
- College of Agriculture, Ludong University, Yantai, 264025, PR China
| | - Xiyun Yang
- College of Agriculture, Ludong University, Yantai, 264025, PR China
| | - Gang Lin
- Institute of Quality Standards and Testing Technology for Agricultural Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Yan Fang
- College of Agriculture, Ludong University, Yantai, 264025, PR China
| | - Zeli Ruan
- College of Agriculture, Ludong University, Yantai, 264025, PR China
| | - Mingfang Liu
- College of Agriculture, Ludong University, Yantai, 264025, PR China
| | - Guoxu Liu
- College of Agriculture, Ludong University, Yantai, 264025, PR China
| | - Mingzhu Li
- College of Agriculture, Ludong University, Yantai, 264025, PR China.
| | - Dinglong Yang
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, PR China.
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Yasukawa Z, Inoue R, Ozeki M, Okubo T, Takagi T, Honda A, Naito Y. Effect of Repeated Consumption of Partially Hydrolyzed Guar Gum on Fecal Characteristics and Gut Microbiota: A Randomized, Double-Blind, Placebo-Controlled, and Parallel-Group Clinical Trial. Nutrients 2019; 11:E2170. [PMID: 31509971 PMCID: PMC6769658 DOI: 10.3390/nu11092170] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/27/2019] [Accepted: 09/02/2019] [Indexed: 02/08/2023] Open
Abstract
Partially hydrolyzed guar gum (PHGG) is a water-soluble dietary fiber and is used in solid and liquid food to regulate gut function. The aim of this study was to investigate effects of PHGG on bowel movements (stool form and frequency), plasma bile acids, quality of life, and gut microbiota of healthy volunteers with a tendency toward diarrhea, i.e., irritable bowel syndrome diarrhea (IBS-D)-like symptoms. A randomized, double-blind, placebo-controlled, and parallel trial was performed on 44 healthy volunteers (22 males, 22 females, 41.9 ± 6.3 years old (average ± SD)) with minimum 7 bowel movements every week, wherein above 50% of their stool was between the Bristol stool scale (BSS) value of 5 and 6. Intake of the PHGG for 3 months significantly improved stool form, evaluated using BSS, and had no effects on stool frequency. BSS was significantly normalized in the group consuming the PHGG compared with the placebo. Comprehensive fecal microbiome analysis by the 16S rRNA-sequence method detected significant changes in the ratio of some bacteria, such as an increase of Bifidobacterium (p < 0.05) in the PHGG group. Our results suggest that intake of PHGG improves human stool form via regulating intestinal microbiota.
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Affiliation(s)
- Zenta Yasukawa
- Nutrition Division, Taiyo Kagaku Co., Ltd., Yokkaichi, Mie 510-0844, Japan.
- Academic-Industrial Graduate School, Mie University, Tsu, Mie 514-8507, Japan.
| | - Ryo Inoue
- Laboratory of Animal Science, Department of Agricultural and Life Sciences, Kyoto Prefectural University, Kyoto 606-8522, Japan.
| | - Makoto Ozeki
- Nutrition Division, Taiyo Kagaku Co., Ltd., Yokkaichi, Mie 510-0844, Japan.
- Academic-Industrial Graduate School, Mie University, Tsu, Mie 514-8507, Japan.
| | - Tsutomu Okubo
- Nutrition Division, Taiyo Kagaku Co., Ltd., Yokkaichi, Mie 510-0844, Japan.
- Academic-Industrial Graduate School, Mie University, Tsu, Mie 514-8507, Japan.
| | - Tomohisa Takagi
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan.
| | - Akira Honda
- Gastroenterology, Tokyo Medical University Ibaraki Medical Center, Inashiki, Ibaraki 300-0395, Japan.
| | - Yuji Naito
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan.
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Jami MJ, Abedian Kenari A, Paknejad H, Mohseni M. Effects of dietary b-glucan, mannan oligosaccharide, Lactobacillus plantarum and their combinations on growth performance, immunity and immune related gene expression of Caspian trout, Salmo trutta caspius (Kessler, 1877). Fish Shellfish Immunol 2019; 91:202-208. [PMID: 31085328 DOI: 10.1016/j.fsi.2019.05.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 05/05/2019] [Accepted: 05/10/2019] [Indexed: 06/09/2023]
Abstract
This study investigated the effect of individual and combination of dietary pre- and probiotics (β-glucan, 3 mg/g; mannan oligosaccharide (MOS), 4 mg/g; and Lactobacillus plantarum; 108 CFU/mg diet) on growth performance, blood immune parameters, expression of immune related genes, and intestinal microbial of Caspian trout (Salmo trutta caspius). On the basis of feeding with immunostimulant diets, the fish were assigned into eight groups denoted as: control (basal diet), bβ (basal diet + β-glucan), bM (basal diet + MOS), bLp (basal diet + L. plantarum), bβLp (basal diet + β-glucan + L. plantarum), bMLp (basal diet + MOS + L. plantarum), bMβ (basal diet + MOS + β-glucan), and bMβLp (basal diet + MOS + β-glucan + L. plantarum). All of the immunostimulant diets, in general, reduced feed intake (FI) and food conversion ratio (FCR) and increased WG, PER, and final weight. Condition factor (CF) demonstrated the lowest level in the experimental group received bMβLp. Total lipid increased in the fish received the additives, especially bM and bMβ. Ash content demonstrated significant increase in the fish fed on bβ and bMβLp, whereas moisture content was reduced in the group fed with L. plantarum-supplemented diet. All immunostimulant diets enhanced the activity and levels of lysozyme, Immunoglobulin M (IgM), and serum alternative complement activity (ACH50); the highest value for these indices was observed in the groups fed with bMβ, bMβLp, and bβLp. bMβ-treated fish group displayed the highest cortisol and glucose levels. bM diet induced the highest mRNA transcription of TNF-α1 in head kidney, whereas bLp, bMβ, and bMβLp showed no effect. IL1β exhibited the greatest up-regulation, about 8.75 fold change, in response to the diet supplemented only with β-glucan. bβLp and bβ significantly enhanced the relative IL-8 mRNA expression in the head kidney (about 2.75 and 1.9 folds, respectively), yet in response to bMβLp treatment it showed a decrease of about 5.7 times lower than the control group. In addition, intestinal population of L. plantarum showed the highest loads in the groups fed on the diets which were treated with the probiotic. Taken together, combinational use of these immunostimulants enhanced humoral innate immune system, whereas their individual and combinational application could increase and decrease the transcription of inflammation-related genes, respectively.
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Affiliation(s)
- Mohammad Javad Jami
- Department of Aquaculture, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares, University, Mazandaran, Noor, P.O. Box 64414-356, Iran
| | - Abdolmohammad Abedian Kenari
- Department of Aquaculture, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares, University, Mazandaran, Noor, P.O. Box 64414-356, Iran.
| | - Hamed Paknejad
- Department of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Mahmoud Mohseni
- Cold Water Fishes Research Center (CFRC), Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research, Eduction and Extension Organization (AREEO), Dohezar, Tonekabon, Mazandaran, Iran
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Chen H, Nie Q, Hu J, Huang X, Zhang K, Pan S, Nie S. Hypoglycemic and Hypolipidemic Effects of Glucomannan Extracted from Konjac on Type 2 Diabetic Rats. J Agric Food Chem 2019; 67:5278-5288. [PMID: 30964673 DOI: 10.1021/acs.jafc.9b01192] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Diabetes and its complications are one of the most concerned metabolic diseases worldwide and threaten human health severely. Hypoglycemic and hypolipidemic effects of glucomannan extracted from konjac on high-fat diet and streptozocin-induced type 2 diabetic rats were evaluated in this study. Administration of konjac glucomannan significantly decreased the levels of fasting blood glucose, serum insulin, glucagon-like peptide 1, and glycated serum protein. The concentrations of serum lipids, including total cholesterol, triacylglycerols, low-density lipoprotein cholesterol, and non-esterified fatty acid, were notably reduced by konjac glucomannan treatment. In addition, antioxidant capacity, pancreatic injury, and adipose cell hypertrophy were ameliorated by konjac glucomannan administration in type 2 diabetic rats. Besides, ultra performance liquid chromatography-quadrupole time-of-flight mass spectrometry-based lipidomics analysis was used to explore the improvement of lipid metabolic by konjac glucomannan treatment. The disturbance of glycerolipid (diacylglycerol, monoacylglycerol, and triacylglycerol), fatty acyl (acylcarnitine and hydroxyl fatty acid), sphingolipid (ceramide and sphingomyelin), and glycerophospholipid (phosphatidylcholine) metabolism were attenuated by the glucomannan treatment. This study provided new insights for investigating the anti-diabetic effects of konjac glucomannan and suggests that konjac glucomannan may be a promising nutraceutical for treating type 2 diabetes.
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Affiliation(s)
- Haihong Chen
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang) , Nanchang University , 235 Nanjing East Road , Nanchang , Jiangxi 330047 , People's Republic of China
| | - Qixing Nie
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang) , Nanchang University , 235 Nanjing East Road , Nanchang , Jiangxi 330047 , People's Republic of China
| | - Jielun Hu
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang) , Nanchang University , 235 Nanjing East Road , Nanchang , Jiangxi 330047 , People's Republic of China
| | - Xiaojun Huang
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang) , Nanchang University , 235 Nanjing East Road , Nanchang , Jiangxi 330047 , People's Republic of China
| | - Ke Zhang
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang) , Nanchang University , 235 Nanjing East Road , Nanchang , Jiangxi 330047 , People's Republic of China
| | - Shijie Pan
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang) , Nanchang University , 235 Nanjing East Road , Nanchang , Jiangxi 330047 , People's Republic of China
| | - Shaoping Nie
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang) , Nanchang University , 235 Nanjing East Road , Nanchang , Jiangxi 330047 , People's Republic of China
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Sun Y, Su J, Yang S, Liu Z, Liu D, Gan F, Chen X, Huang K. Mannan Oligosaccharide Protects against the Aflatoxin-B 1-Promoted Influenza Replication and Tissue Damages in a Toll-Like-Receptor-4-Dependent Manner. J Agric Food Chem 2019; 67:735-745. [PMID: 30586993 DOI: 10.1021/acs.jafc.8b05829] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Our previous study reported that aflatoxin B1 (AFB1) promoted influenza replication. Mannan oligosaccharide (MOS), derived from the cell walls of yeast, is a potent immunomodulator. Here, we investigated the role of MOS in AFB1-promoted influenza replication and further explored the underlying mechanisms. In vitro and in vivo, the exposure to AFB1 alone resulted in significantly decreased weight gain and increased viral replication as well as lung and spleen damages. Increased influenza replication coupled with increases in toll-like receptor 4 (TLR4), phosphorylated nuclear factor κB, and tumor necrosis factor α (TNF-α) levels. However, MOS given in conjunction with exposure to AFB1 significantly reversed these above changes. A further study indicated that MOS activity was abolished by TLR4 knockout or TLR4 overexpression. Surprisingly, TNF-α played no role in the MOS-mediated protective effects. Collectively, our data suggest that MOS alleviates the AFB1-promoted influenza replication, inflammation, and tissue damages in a TLR4-dependent manner.
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Garcia Diaz T, Ferriani Branco A, Jacovaci FA, Cabreira Jobim C, Pratti Daniel JL, Iank Bueno AV, Gonçalves Ribeiro M. Use of live yeast and mannan-oligosaccharides in grain-based diets for cattle: Ruminal parameters, nutrient digestibility, and inflammatory response. PLoS One 2018; 13:e0207127. [PMID: 30427904 PMCID: PMC6241129 DOI: 10.1371/journal.pone.0207127] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Accepted: 10/25/2018] [Indexed: 12/21/2022] Open
Abstract
The objective of this study was to evaluate the effects of diet supplementation with live yeast (Saccharomyces cerevisiae) and mannan-oligosaccharides (MOS) on ruminal parameters, nutrient digestibility, and the inflammatory response in cattle fed grain-based diets. Three Holstein steers (body weight of 497±3 kg) with ruminal and duodenal cannulas were assigned to a 3 × 3 Latin square design. The animals were kept in individual pens and fed a diet containing 5% sugarcane bagasse and 95% concentrate (906.5 g/kg ground corn). Diet treatments were Control (without additive), Yeast (1.5 g/kg DM live yeast Saccharomyces cerevisiae, NCYC 996) and MOS (1.5 g/kg DM MOS, β-glucans and mannan). Dry matter intake, ruminal, intestinal, and total digestibility of nutrients were not affected by the treatments. The ruminal concentration of isobutyric acid increased in animals fed on diets supplemented with Yeast and MOS, whereas isovaleric acid increased with Yeast and decreased with MOS supplementation. Dietary supplementation with Yeast and MOS increased pH and decreased ammonia concentration in the rumen. Lipopolysaccharide (LPS) concentrations in the rumen and duodenal fluid were not influenced by the additives. However, both Yeast and MOS decreased the plasma levels of LPS and serum amyloid A (SAA). In conclusion, when high-concentrate diets fed to beef cattle are supplemented with either Yeast or MOS, ruminal pH is increased, LPS translocation into the blood stream is decreased, and blood SAA concentration is decreased. These factors reduce the inflammation caused by consumption of grain-based diets, and either supplement could be used to improve the rumen environment in beef cattle susceptible to ruminal subacute acidosis.
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Affiliation(s)
- Tatiana Garcia Diaz
- Department of Animal Science, State University of Maringá; Bloco J45, Maringá, PR, Brazil
| | - Antonio Ferriani Branco
- Department of Animal Science, State University of Maringá; Bloco J45, Maringá, PR, Brazil
- * E-mail:
| | | | - Clóves Cabreira Jobim
- Department of Animal Science, State University of Maringá; Bloco J45, Maringá, PR, Brazil
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Martín-Illana A, Cazorla-Luna R, Notario-Pérez F, Bedoya LM, Ruiz-Caro R, Veiga MD. Freeze-dried bioadhesive vaginal bigels for controlled release of Tenofovir. Eur J Pharm Sci 2018; 127:38-51. [PMID: 30343152 DOI: 10.1016/j.ejps.2018.10.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 10/11/2018] [Accepted: 10/12/2018] [Indexed: 12/23/2022]
Abstract
Nowadays, million women live with the human immunodeficiency virus (HIV) worldwide and many of them are dying per year, particularly in Sub-Saharan Africa. The development of systems that can be accessed by this population group to prevent the sexual transmission of the virus is therefore necessary. The aim of this work was the formulation of freeze-dried bioadhesive vaginal bigels releasing Tenofovir in a controlled manner. Systems containing three different proportions of guar gum hydrogel and sesame oil were prepared, adding Span®60 or Span®60 and Tween®60 as surfactants. Drug and excipients were evaluated by cytotoxicity assays, showing no toxicity at the concentrations tested neither for the drug nor any of the excipients. Fresh formulations were characterised through texture analyses and confocal laser microcopy. The system with the lowest guar gum hydrogel/sesame oil proportion and containing Span®60 and Tween®60 (batch ST1) had the highest consistency and adhesion capacity according to texture analyses. Furthermore, a genuine bigel microstructure was observed. After freeze-drying, swelling, bioadhesion and drug release tests were performed on the resulting systems. ST1 showed the longest bioadhesion time and the most controlled release, as well as a low swelling grade, becoming an interesting option for preventing HIV sexual transmission in women.
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Affiliation(s)
- Araceli Martín-Illana
- Departamento de Farmacia Galénica y Tecnología Alimentaria, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain.
| | - Raúl Cazorla-Luna
- Departamento de Farmacia Galénica y Tecnología Alimentaria, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain.
| | - Fernando Notario-Pérez
- Departamento de Farmacia Galénica y Tecnología Alimentaria, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain.
| | - Luis Miguel Bedoya
- Departamento de Farmacología, Farmacognosia y Botánica, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain.
| | - Roberto Ruiz-Caro
- Departamento de Farmacia Galénica y Tecnología Alimentaria, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain.
| | - María Dolores Veiga
- Departamento de Farmacia Galénica y Tecnología Alimentaria, Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain.
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Torrecillas S, Rivero-Ramírez F, Izquierdo MS, Caballero MJ, Makol A, Suarez-Bregua P, Fernández-Montero A, Rotllant J, Montero D. Feeding European sea bass (Dicentrarchus labrax) juveniles with a functional synbiotic additive (mannan oligosaccharides and Pediococcus acidilactici): An effective tool to reduce low fishmeal and fish oil gut health effects? Fish Shellfish Immunol 2018; 81:10-20. [PMID: 29981880 DOI: 10.1016/j.fsi.2018.07.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 06/22/2018] [Accepted: 07/04/2018] [Indexed: 06/08/2023]
Abstract
The aim of this study was to assess the effects of dietary mannan oligosaccharides (MOS), Pediococcus acidilactici or their conjunction as a synbiotic in low fish meal (FM) and fish oil (FO) based diets on European sea bass (Dicentrarchus labrax) disease resistance and gut health. For that purpose, sea bass juveniles were fed one of 6 diets containing different combinations of MOS (Biomos® and Actigen©; Alltech, Inc., Kentucky, USA) and Pediococcus acidilactici (BAC, Bactocell®; Lallemand Inc., Cardiff, UK) replacing standard carbohydrates as follows (MOS (%)/BAC (commercial recommendation): high prebiotic level (HP) = 0.6/0, low prebiotic level (LP) = 0.3/0, only probiotic (B) = 0/+, high prebiotic level plus probiotic (HPB) = 0.6/+, low prebiotic level plus probiotic (LPB) = 0.3/+, control (C) = 0/0 for 90 days. After 60 and 90 days of feeding trial, fish were subjected to an experimental infection against Vibrio anguillarum. Additionally, inducible nitric oxide synthase (iNOS) and tumor necrosis factor α (TNFα) gut patterns of immunopositivity and major histocompatibility complex class II (MHCII), transforming growth factor β (TGF-β), regulatory T-cell subset (CD4+T lymphocytes) and effector T cell (CD8α+T lymphocytes) gene expression patterns in gut by in situ hybridization were evaluated after 90 days of feeding. The effects of both additives on posterior gut through Gut Associated Lymphoid Tissue (GALT) gene expression was also studied. Fish fed the prebiotic and its combination with P. acidilactici presented increased weight regardless of the dose supplemented after 90 days of feeding, however no effect was detected on somatic indexes. For posterior gut, morphometric patterns and goblet cells density was not affected by MOS, P. acidilactici or its combination. Anti-iNOS and anti-TNFα gut immunopositivity patterns were mainly influenced by MOS supplementation and not by its combination with P. acidilactici. MHCII-β, TCR-β, CD4 and CD8-α positive cells distribution and incidence was not affected by diet. Fish fed HP dose presented a clear up-regulation of TNF-α, cyclooxygenase-2 (COX-2), CD4 and IL10, whereas P. acidilactici dietary supplementation increased the number of interleukin-1β (IL1β) and COX-2 gene transcripts. Synbiotic supplementation resulted in a reduction of MOS-induced gut humoral proinflammatory response by increasing the expression of some cellular-immune system related genes. Fish mortality after V. anguillarum infection was reduced in fish fed LPB and LP diets compared to fish fed the non-suppelmented diet after 90 days of feeding. Thus, overall pointing to the combination of a low dose of MOS and P. acidilactici as synbiont (LPB) as a viable tool to potentiate European sea bass juvenile's growth and disease resistance when supplemented in low FM and FO diets.
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Affiliation(s)
- S Torrecillas
- Grupo de Investigación en Acuicultura (GIA), Instituto Universitario Ecoaqua, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214 Telde, Canary Islands, Spain.
| | - F Rivero-Ramírez
- Grupo de Investigación en Acuicultura (GIA), Instituto Universitario Ecoaqua, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214 Telde, Canary Islands, Spain
| | - M S Izquierdo
- Grupo de Investigación en Acuicultura (GIA), Instituto Universitario Ecoaqua, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214 Telde, Canary Islands, Spain
| | - M J Caballero
- Grupo de Investigación en Acuicultura (GIA), Instituto Universitario Ecoaqua, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214 Telde, Canary Islands, Spain
| | - A Makol
- Biomar Iberia, S.A. A-63, Km. 99, Apdo. 16, 34210 Dueñas, Spain
| | - P Suarez-Bregua
- Aquatic Molecular Pathobiology Laboratory, (IIM-CSIC), C/ Eduardo Cabello 6, 36208, Vigo (Pontevedra), Spain
| | - A Fernández-Montero
- Grupo de Investigación en Acuicultura (GIA), Instituto Universitario Ecoaqua, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214 Telde, Canary Islands, Spain
| | - J Rotllant
- Aquatic Molecular Pathobiology Laboratory, (IIM-CSIC), C/ Eduardo Cabello 6, 36208, Vigo (Pontevedra), Spain
| | - D Montero
- Grupo de Investigación en Acuicultura (GIA), Instituto Universitario Ecoaqua, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214 Telde, Canary Islands, Spain
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Zheng J, Li H, Zhang X, Jiang M, Luo C, Lu Z, Xu Z, Shi J. Prebiotic Mannan-Oligosaccharides Augment the Hypoglycemic Effects of Metformin in Correlation with Modulating Gut Microbiota. J Agric Food Chem 2018; 66:5821-5831. [PMID: 29701959 DOI: 10.1021/acs.jafc.8b00829] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Type 2 diabetes (T2D) induced by obesity and high-fat diet is significantly associated with gut microbiota dysbacteriosis. Because the first line clinical medicine of metformin has several intestinal drawbacks, combination usage of metformin with a prebiotic of konjac mannan-oligosaccharides (MOS) was conceived and implemented aiming to investigate whether there were some intestinal synergetic effects and how MOS would function. Composite treatment of metformin and MOS demonstrated synergistic effects on ameliorating insulin resistance and glucose tolerance, also on repairing islet and hepatic histology. In addition, MF+MOS altered the gut community composition and structure by decreasing the relative abundances of family Rikenellaceae and order Clostridiales while increasing an unnamed OTU05945 of family S24-7, Akkermansia muciniphila, and Bifidobacterium pseudolongum. The present study suggested that usage of MOS could augment the hypoglycemic effects of metformin in association with gut microbiota modulation, which could provide references for further medication.
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Affiliation(s)
| | | | | | | | - Chunqin Luo
- Chengdu Yongan Yuanhe Biotechnology Co. Ltd., Fifth Tianfu Street , Chengdu 611630 , China
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Kollárová K, Kamenická V, Vatehová Z, Lišková D. Impact of galactoglucomannan oligosaccharides and Cd stress on maize root growth parameters, morphology, and structure. J Plant Physiol 2018; 222:59-66. [PMID: 29407550 DOI: 10.1016/j.jplph.2017.12.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 12/20/2017] [Accepted: 12/22/2017] [Indexed: 05/13/2023]
Abstract
Biologically active oligosaccharides, including galactoglucomannan oligosaccharides (GGMOs), affect plant growth and development. The impact of GGMOs is dependent on their concentration, and the plant species and plant parts affected. The aim of this article is to ascertain the effects of GGMOs, GGMOs + Cd2+, on growth parameters, morphology, and the structure of maize (Zea mays L.) roots. We undertook this research because, in monocots, the effect of these oligosaccharides is so far unknown. In our study, GGMOs stimulated primary root elongation, induction and elongation of lateral roots, and biomass production. Their effect was dependent on the concentration used. Simultaneously, GGMOs moderated the negative effect of Cd2+ on root elongation growth. Besides, GGMOs affected the primary root structure, proven in the earlier development of xylem and Casparian bands, but not of suberin lamellae (compared to the control). The presence of Cd2+ shifted the apoplasmic barriers closer to the root apex in comparison to samples treated with GGMOs + Cd2+. GGMOs do not inhibit Cd uptake into the root directly, but they moderate its effect, and therefore their influence at the structural and metabolic level seems possible. Their positive impact on plant vitality, even in contaminated conditions, strongly indicates their potential application in remediation technologies.
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Affiliation(s)
- Karin Kollárová
- Department of Glycobiotechnology, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovakia.
| | - Viktória Kamenická
- Department of Plant Physiology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina B-2, 842 15, Bratislava, Slovakia
| | - Zuzana Vatehová
- Department of Glycobiotechnology, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovakia
| | - Desana Lišková
- Department of Glycobiotechnology, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovakia
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Elshopakey GE, Risha EF, Abdalla OA, Okamura Y, Hanh VD, Ibuki M, Sudhakaran R, Itami T. Enhancement of immune response and resistance against Vibrio parahaemolyticus in kuruma shrimp (Marsupenaeus japonicus) by dietary supplementation of β-1,4-mannobiose. Fish Shellfish Immunol 2018; 74:26-34. [PMID: 29288050 DOI: 10.1016/j.fsi.2017.12.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 12/10/2017] [Accepted: 12/21/2017] [Indexed: 06/07/2023]
Abstract
Supplementation of prebiotic carbohydrates can act as a potent immunomodulator and have the efficacy to induce immune-related genes which are involved in host defense. Pure β-1,4-mannobiose (MNB) showed activation of prophenoloxidase system of shrimp hemocytes in vitro. The resistance of kuruma shrimp Marsupenaeus japonicus against Vibrio parahaemolyticus was examined after the shrimp were fed with 0 (control), 0.02, 0.2, and 2% MNB supplemented diets. The results showed significantly higher survival rates in MNB supplemented shrimp than those of the control one from 2 to 12 days post challenge. In another experiment, the hemocyte count, ROS production, phagocytic, phenoloxidase and bactericidal activities, and expression of immune-related genes were investigated in the control and MNB supplemented groups at day 1, 4, 6, 8 and 11 of the feeding. These immune parameters were significantly enhanced in MNB supplemented groups. Furthermore, the gene expression analysis showed that transcripts of lysozyme, crustin, penaeidin and TNF were significantly up-regulated in hemolymph, lymphoid organs and intestines of MNB treated shrimp. Overall, the results provided evidence that MNB supplementation could improve the immune response and increase shrimp resistance against V. parahaemolyticus infection.
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Affiliation(s)
- Gehad E Elshopakey
- Department of Marine Biology and Environmental Science, University of Miyazaki, Miyazaki, Japan; Department of Clinical Pathology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Engy F Risha
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Osama A Abdalla
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Yo Okamura
- Department of Marine Biology and Environmental Science, University of Miyazaki, Miyazaki, Japan
| | - Vu Duc Hanh
- Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Viet Nam
| | | | - Raja Sudhakaran
- Aquaculture Biotechnology Laboratory, School of Bio Sciences and Technology, VIT University, India
| | - Toshiaki Itami
- Department of Marine Biology and Environmental Science, University of Miyazaki, Miyazaki, Japan.
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Soares MP, Oliveira FC, Cardoso IL, Urbinati EC, Meldau de Campos C, Hisano H. Glucan-MOS ® improved growth and innate immunity in pacu stressed and experimentally infected with Aeromonas hydrophila. Fish Shellfish Immunol 2018; 73:133-140. [PMID: 29191795 DOI: 10.1016/j.fsi.2017.11.046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 11/22/2017] [Accepted: 11/24/2017] [Indexed: 06/07/2023]
Abstract
We tested the efficacy of a commercial product (Glucan-MOS®) derived from yeast Saccharomyces cerevisiae, containing two combined products, β-1,3-1,6 glucans and mannans on the growth, feed efficiency, stress and innate immune responses of juvenile pacu (Piaractus mesopotamicus) after a stressful handling and bacterial inoculation. For this, we evaluated the serum cortisol and plasma glucose levels, the respiratory activity of leukocytes, the serum lysozyme levels, as well as the number of circulating erythrocytes and leukocytes of fish fed during 30 days with diets containing increased levels of Glucan-MOS (0.0, 0.1, 0.2, 0.4 and 0.8%). The supplementation of 0.1% improved weight gain, feed conversion and the protein efficiency ratio compared to a control diet. The 0.2 and 0.4% Glucan-MOS® diets were sufficient to increase the respiratory burst of leukocytes and lysozyme activity, the number of thrombocytes, neutrophils and monocytes in the blood after a stressful handling and bacterial challenge, and minimized stress response as shown by decreased cortisol and glucose levels when compared to the control. The results of this work reinforce the benefits of the adoption of feeding strategies including combination of both β-1,3-1,6 glucans and mannans as a dietary supplement in periods prior to intensive management. The 30-day period was sufficient to stimulate growth performance, improve nutrient utilization, minimize stress response and modulate innate immunity responses.
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Affiliation(s)
- Michelly Pereira Soares
- Programa de Pós-Graduação em Zootecnia, Universidade Estadual de Mato Grosso do Sul, Unidade Universitária de Aquidauana, Rodovia Aquidauana-UEMS, Km 12, CP 25, Aquidauana, 79200-000, Mato Grosso do Sul, Brazil.
| | - Fulvia Cristina Oliveira
- Programa de Pós-Graduação em Zootecnia, Universidade Estadual de Mato Grosso do Sul, Unidade Universitária de Aquidauana, Rodovia Aquidauana-UEMS, Km 12, CP 25, Aquidauana, 79200-000, Mato Grosso do Sul, Brazil.
| | - Israel Luz Cardoso
- Programa de Pós-Graduação em Zootecnia, Universidade Estadual de Mato Grosso do Sul, Unidade Universitária de Aquidauana, Rodovia Aquidauana-UEMS, Km 12, CP 25, Aquidauana, 79200-000, Mato Grosso do Sul, Brazil.
| | - Elisabeth Criscuolo Urbinati
- Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista UNESP, Via de Acesso Prof. Paulo Donato Castelane, Jaboticabal, 14 884-900, São Paulo, Brazil.
| | - Cristiane Meldau de Campos
- Programa de Pós-Graduação em Zootecnia, Universidade Estadual de Mato Grosso do Sul, Unidade Universitária de Aquidauana, Rodovia Aquidauana-UEMS, Km 12, CP 25, Aquidauana, 79200-000, Mato Grosso do Sul, Brazil.
| | - Hamilton Hisano
- Empresa Brasileira de Pesquisa Agropecuária, Embrapa Meio Ambiente, Rodovia SP 340, Km 127,5 Caixa Postal 69, Jaguariúna, 13820-000, São Paulo, Brazil.
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Khan K, Jovanovski E, Ho HVT, Marques ACR, Zurbau A, Mejia SB, Sievenpiper JL, Vuksan V. The effect of viscous soluble fiber on blood pressure: A systematic review and meta-analysis of randomized controlled trials. Nutr Metab Cardiovasc Dis 2018; 28:3-13. [PMID: 29153856 DOI: 10.1016/j.numecd.2017.09.007] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 08/25/2017] [Accepted: 09/25/2017] [Indexed: 12/18/2022]
Abstract
AIMS Dietary fiber intake, especially viscous soluble fiber, has been established as a means to reduce cardiometabolic risk factors. Whether this is true for blood pressure remains controversial. A systematic review and meta-analysis of randomized controlled trials (RCTs) was conducted to investigate the effects of viscous soluble fiber supplementation on blood pressure and quantify the effect of individual fibers. DATA SYNTHESIS MEDLINE, Embase, and Cochrane databases were searched. We included RCTs of ≥4-weeks in duration assessing viscous fiber supplementation from five types: β-glucan from oats and barley, guar gum, konjac, pectin and psyllium, on systolic blood pressure (SBP) and diastolic blood pressure (DBP). Study data were pooled using the generic inverse variance method with random effects models and expressed as mean differences (MD) with 95% confidence intervals (CIs). Twenty-two (N = 1430) and twenty-one RCTs (N = 1343) were included in the final analysis for SBP and DBP, respectively. Viscous fiber reduced SBP (MD = -1.59 mmHg [95% CI: -2.72,-0.46]) and DBP (MD = -0.39 mmHg [95% CI: -0.76,-0.01]) at a median dose of 8.7 g/day (1.45-30 g/day) over a median follow-up of 7-weeks. Substantial heterogeneity in SBP (I2 = 72%, P < 0.01) and DBP (I2 = 67%, P < 0.01) analysis occurred. Within the five fiber types, SBP reductions were observed only for supplementation using psyllium fiber (MD = -2.39 mmHg [95% CI: -4.62,-0.17]). CONCLUSION Viscous soluble fiber has an overall lowering effect on SBP and DBP. Inclusion of viscous fiber to habitual diets may have additional value in reducing CVD risk via improvement in blood pressure. PROTOCOL REGISTRATION ClinicalTrials.gov identifier-NCT02670967.
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Affiliation(s)
- K Khan
- Clinical Nutrition and Risk Factor Modification Centre, Canada
| | - E Jovanovski
- Clinical Nutrition and Risk Factor Modification Centre, Canada; Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Canada
| | - H V T Ho
- Clinical Nutrition and Risk Factor Modification Centre, Canada; Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Canada
| | - A C R Marques
- Clinical Nutrition and Risk Factor Modification Centre, Canada; Department of Pharmacology and Therapeutic, State University of Maringa, Maringa, Brazil
| | - A Zurbau
- Clinical Nutrition and Risk Factor Modification Centre, Canada; Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Canada
| | - S B Mejia
- Clinical Nutrition and Risk Factor Modification Centre, Canada; Toronto 3D Knowledge Synthesis and Clinical Trials Unit, St. Michael's Hospital, Toronto, Canada
| | - J L Sievenpiper
- Clinical Nutrition and Risk Factor Modification Centre, Canada; Keenan Research Center of the Li Ka Shing Knowledge Institute, Canada; Division of Endocrinology & Medicine, Canada; Toronto 3D Knowledge Synthesis and Clinical Trials Unit, St. Michael's Hospital, Toronto, Canada; Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Canada
| | - V Vuksan
- Clinical Nutrition and Risk Factor Modification Centre, Canada; Keenan Research Center of the Li Ka Shing Knowledge Institute, Canada; Division of Endocrinology & Medicine, Canada; Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Canada.
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Castro-Osses D, Carrera-Naipil C, Gallardo-Escárate C, Gonçalves AT. Functional diets modulate the acute phase protein response in Oncorhynchus mykiss subjected to chronic stress and challenged with Vibrio anguillarum. Fish Shellfish Immunol 2017; 66:62-70. [PMID: 28476670 DOI: 10.1016/j.fsi.2017.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 04/21/2017] [Accepted: 05/01/2017] [Indexed: 06/07/2023]
Abstract
The acute phase response to pathogens alters the production of proinflammatory cytokines that, in turn, activate the synthesis of acute phase proteins. These proteins neutralize, prevent, and indicate tissue damage, thereby influencing the specific immune response and allowing the organism to regain homeostasis. Functional diets based in pre- and probiotics are used in aquaculture to improve fish health and resistance to diseases, but there is an information gap on the mechanisms involved in these effects and if these diets are efficient when fish are raised under high stocking densities. This study aimed an evaluation of the acute phase response in Oncorhynchus mykiss fed functional diets supplemented with pre- and probiotics (i.e. mannan-oligosaccharides and Saccharomyces cerevisiae, respectively) and challenged by either Vibrio anguillarum or chronic stress via maintenance under high stocking densities. For this, the relative expression of acute phase response related genes in liver, and of inflammatory response related genes in head kidney was evaluated by RT-qPCR. The supplemented diets differentially modulated the acute phase protein response to the assessed challenge conditions, specifically evidencing an overexpression of the genes HAPT, SAA, LECT2, and IL-1β under chronic stress and of HAPT, IL-1β, IL8, and LECT2 at 24 h post-challenge with V. anguillarum. The observed early-stage regulation of acute phase proteins and of the immune response by the probiotic S. cerevisiae and by prebiotic mannan-oligosaccharides suggests that both supplements have high immunostimulatory potentials for fish farmed under high stocking densities.
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Affiliation(s)
- Darlyng Castro-Osses
- Laboratory of Biotechnology and Aquatic Genomics, Interdisciplinary Center for Aquaculture Research (INCAR), Department of Oceanography, University of Concepción, Víctor Lamas 1290, 4030000 Concepción, Chile
| | - Crisleri Carrera-Naipil
- Laboratory of Biotechnology and Aquatic Genomics, Interdisciplinary Center for Aquaculture Research (INCAR), Department of Oceanography, University of Concepción, Víctor Lamas 1290, 4030000 Concepción, Chile
| | - Cristian Gallardo-Escárate
- Laboratory of Biotechnology and Aquatic Genomics, Interdisciplinary Center for Aquaculture Research (INCAR), Department of Oceanography, University of Concepción, Víctor Lamas 1290, 4030000 Concepción, Chile
| | - Ana Teresa Gonçalves
- Laboratory of Biotechnology and Aquatic Genomics, Interdisciplinary Center for Aquaculture Research (INCAR), Department of Oceanography, University of Concepción, Víctor Lamas 1290, 4030000 Concepción, Chile.
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Varshosaz J, Tavakoli N, Kheirolahi F. Use of hydrophilic natural gums in formulation of sustained-release matrix tablets of tramadol hydrochloride. AAPS PharmSciTech 2017; 7:E168-E174. [PMID: 16584155 PMCID: PMC2750323 DOI: 10.1208/pt070124] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2005] [Accepted: 10/31/2005] [Indexed: 11/30/2022] Open
Abstract
The objective of this work was to develop matrix sustained-release tablets of highly water-soluble tramadol HCl using natural gums (xanthan [X gum] and guar [G gum]) as cost-effective, nontoxic, easily available, and suitable hydrophilic matrix systems compared with the extensively investigated hydrophilic matrices (ie, hydroxypropyl methylcellulose [HPMC]/carboxymethyl cellulose [CMC] with respect to in vitro drug release rate) and hydration rate of the polymers. Matrix tablets of tramadol (dose 100 mg) were produced by direct compression method. Different ratios, of 100∶0, 80∶20, 60∶40, 20∶80, 0∶100 of G gum (or X):HPMC, X gum:G gum, and triple mixture of these polymers (G gum, X gum, HPMC) were applied. After evaluation of physical characteristics of tablets, the dissolution test was, performed in the phosphate buffer media (pH 7.4) up to 8 hours. Tablets with only X had the highest mean dissolution time (MDT), the least dissolution efficiency (DE8%), and released the drug following a zero-order model via swelling, diffusion, and erosion mechanisms. Guar gum alone could not efficiently control the drug release, while X and all combinations of natural gums with HPMC could retard tramadol HCl release. However, according to the similarity factor (f 2), pure HPMC and H8G2 were the most similar formulations to Topalgic-LP as the reference standard.
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Affiliation(s)
- Jaleh Varshosaz
- Department of Pharmaceutics, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran.
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35
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Li MY, Feng GP, Wang H, Yang RL, Xu Z, Sun YM. Deacetylated Konjac Glucomannan Is Less Effective in Reducing Dietary-Induced Hyperlipidemia and Hepatic Steatosis in C57BL/6 Mice. J Agric Food Chem 2017; 65:1556-1565. [PMID: 28169529 DOI: 10.1021/acs.jafc.6b05320] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Konjac gel foods that mainly consist of deacetylated konjac glucomannan (Da-KGM) are considered to have the same health benefits as native konjac glucomannan (KGM); however, no definitive data support this notion. The objective of this study was to compare the effects of Da-KGM and KGM on the hyperlipidemia and liver steatosis induced by high-fat diet feeding and to investigate the underlying molecular mechanisms. C57BL/6 mice were fed (1) normal chow diet, (2) high-fat diet, (3) HFD with KGM, or (4) HFD with Da-KGM for 10 weeks. KGM, but not Da-KGM, showed decreased fat accumulation, improved blood and liver lipid profiles, and prevention of liver lipid droplet deposition compared with HFD. Compared with Da-KGM, KGM increased the outputs of fecal bile acid (KGM 22.5 ± 2.34 mg/g vs Da-KGM 19.3 ± 1.87 mg/g), fat (KGM 5.56 ± 0.68 mg/g vs Da-KGM 4.42 ± 0.57 mg/g) and cholesterol (KGM2.67 ± 0.43 mg/g vs Da-KGM 1.78 ± 0.28 mg/g), fecal concentrations of total short-chain fatty acids (KGM 103 ± 14.8 μmol/g vs Da-KGM 74.5 ± 8.49 μmol/g), and improved hepatic antioxidant status and upregulated CYP7A1 and LDLR gene expression. These findings suggest that deacetylation of KGM negatively affects its fermentation characteristics and its inhibition of lipid absorption, which thereby reduces Da-KGM's health benefits.
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Affiliation(s)
- Mei-Ying Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University , Guangzhou 510642, China
| | - Guan-Ping Feng
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University , Guangzhou 510642, China
| | - Hong Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University , Guangzhou 510642, China
| | - Rui-Li Yang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University , Guangzhou 510642, China
| | - Zhenlin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University , Guangzhou 510642, China
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University , Guangzhou 510642, China
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McRorie JW, McKeown NM. Understanding the Physics of Functional Fibers in the Gastrointestinal Tract: An Evidence-Based Approach to Resolving Enduring Misconceptions about Insoluble and Soluble Fiber. J Acad Nutr Diet 2016; 117:251-264. [PMID: 27863994 DOI: 10.1016/j.jand.2016.09.021] [Citation(s) in RCA: 250] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 09/20/2016] [Indexed: 12/18/2022]
Abstract
Enduring misconceptions about the physical effects of fiber in the gut have led to misunderstandings about the health benefits attributable to insoluble and soluble fiber. This review will focus on isolated functional fibers (eg, fiber supplements) whose effects on clinical outcomes have been readily assessed in well-controlled clinical studies. This review will also focus on three health benefits (cholesterol lowering, improved glycemic control, and normalizing stool form [constipation and diarrhea]) for which reproducible evidence of clinical efficacy has been published. In the small bowel, clinically meaningful health benefits (eg, cholesterol lowering and improved glycemic control) are highly correlated with the viscosity of soluble fibers: high viscosity fibers (eg, gel-forming fibers such as b-glucan, psyllium, and raw guar gum) exhibit a significant effect on cholesterol lowering and improved glycemic control, whereas nonviscous soluble fibers (eg, inulin, fructooligosaccharides, and wheat dextrin) and insoluble fibers (eg, wheat bran) do not provide these viscosity-dependent health benefits. In the large bowel, there are only two mechanisms that drive a laxative effect: large/coarse insoluble fiber particles (eg, wheat bran) mechanically irritate the gut mucosa stimulating water and mucous secretion, and the high water-holding capacity of gel-forming soluble fiber (eg, psyllium) resists dehydration. Both mechanisms require that the fiber resist fermentation and remain relatively intact throughout the large bowel (ie, the fiber must be present in stool), and both mechanisms lead to increased stool water content, resulting in bulky/soft/easy-to-pass stools. Soluble fermentable fibers (eg, inulin, fructooligosaccharide, and wheat dextrin) do not provide a laxative effect, and some fibers can be constipating (eg, wheat dextrin and fine/smooth insoluble wheat bran particles). When making recommendations for a fiber supplement, it is essential to recognize which fibers possess the physical characteristics required to provide a beneficial health effect, and which fiber supplements are supported by reproducible, rigorous evidence of one or more clinically meaningful health benefits.
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González-Torres L, Vázquez-Velasco M, Olivero-David R, Bastida S, Benedí J, González RR, González-Muñoz MJ, Sánchez-Muniz FJ. Glucomannan and glucomannan plus spirulina added to pork significantly block dietary cholesterol effects on lipoproteinemia, arylesterase activity, and CYP7A1 expression in Zucker fa/fa rats. J Physiol Biochem 2016; 71:773-84. [PMID: 26475369 DOI: 10.1007/s13105-015-0441-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 10/06/2015] [Indexed: 12/24/2022]
Abstract
Zucker fa/fa rats easily develop dyslipidemia and obesity. Restructured pork (RP) is a suitable matrix for including functional ingredients. The effects of glucomannan- RP or glucomannan plus spirulina-enriched RP on plasma lipid/lipoprotein levels, cytochrome P450 7A1 (CYP7A1) expression, and arylesterase activity in growing fa/fa rats fed high-energy, high-fat cholesterol-enriched diets were tested. Groups of six rats each received diet containing 15% control-RP (C), 15% glucomannan-RP diet (G), 15% glucomannan + spirulina-RP diet (GS), and same diets enriched with 2.4% cholesterol and 0.49% cholic acid (cholesterol-enriched control (HC), cholesterol-enriched glucomannan (HG), and cholesterol-enriched glucomannan + spirulina (HGS) diets) over a 7-week period. C diet induced obesity, severe hyperglycemia, moderate hypercholesterolemia, and hypertriglyceridemia. Those facts were not significantly modified by G or GS diets. G diet increased CYP7A1 expression but decreased the total cholesterol/high density lipoproteins (HDL)-cholesterol ratio (p < 0.05) vs. C diet. GS vs. G diet increased (p < 0.05) CYP7A1 expression. HC vs. C diet reduced food intake, body weight gain, and plasma glucose (p < 0.01) but increased cholesterolemia (p < 0.01), lipidemia (plasma cholesterol plus triglycerides) (p < 0.001), cholesterol/triglyceride ratio in very low density lipoproteins (VLDL), and HDL (p < 0.05), cholesterol transported by VLDL and intermediate density lipoproteins (IDL) + low density lipoproteins (LDL), total cholesterol/HDL-cholesterol ratio and CYP7A1 expression (at least p < 0.05). HG and HGS diets vs. HC noticeably reduced lipidemia (p < 0.001), normalized VLDL and IDL + LDL lipid composition, and increased CYP7A1 expression (p < 0.01) but did not modify the cholesterol/HDL-cholesterol ratio. HGS vs. HG decreased triglyceridemia, the triglyceride-glucose (TyG) index and increased arylesterase/HDL-cholesterol activity (p < 0.05). In conclusion, G- and GS-RP act as functional foods and notably blocked the dietary cholesterol effects. In addition, HGS-RP improved the glucomannan hypolipidemic effects, increased arylesterase/HDL-cholesterol activity, and decreased insulin resistance.
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Tester RF, Al-Ghazzewi FH. Beneficial health characteristics of native and hydrolysed konjac (Amorphophallus konjac) glucomannan. J Sci Food Agric 2016; 96:3283-3291. [PMID: 26676961 DOI: 10.1002/jsfa.7571] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 12/08/2015] [Accepted: 12/09/2015] [Indexed: 06/05/2023]
Abstract
The impact of ingesting glucomannans on health is not limited to colonic-focused fermentation into short-chain fatty acids (SCFAs), which might have some local health benefits; it also helps in treating disease states and enhancing the body's immune system, both within the gut and in/on other parts of the body. The local and systemic roles of hydrolysed glucomannans, especially konjac glucomannans, in the mouth, oesophagus, stomach, small intestine, large intestine, gut-associated lymphoid tissue (GALT), skin and vagina, are highlighted. Therapeutic applications are discussed. © 2015 Society of Chemical Industry.
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Ghaffarzadegan T, Marungruang N, Fåk F, Nyman M. Molecular Properties of Guar Gum and Pectin Modify Cecal Bile Acids, Microbiota, and Plasma Lipopolysaccharide-Binding Protein in Rats. PLoS One 2016; 11:e0157427. [PMID: 27315087 PMCID: PMC4912110 DOI: 10.1371/journal.pone.0157427] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 05/31/2016] [Indexed: 01/12/2023] Open
Abstract
Bile acids (BAs) act as signaling molecules in various physiological processes, and are related to colonic microbiota composition as well as to different types of dietary fat and fiber. This study investigated whether guar gum and pectin—two fibers with distinct functional characteristics—affect BA profiles, microbiota composition, and gut metabolites in rats. Low- (LM) or high-methoxylated (HM) pectin, and low-, medium-, or high-molecular-weight (MW) guar gum were administered to rats that were fed either low- or high-fat diets. Cecal BAs, short-chain fatty acids (SCFA) and microbiota composition, and plasma lipopolysaccharide-binding protein (LBP) levels were analyzed, by using novel methodologies based on gas chromatography (BAs and SCFAs) and 16S rRNA gene sequencing on the Illumina MiSeq platform. Strong correlations were observed between cecal BA and SCFA levels, microbiota composition, and portal plasma LBP levels in rats on a high-fat diet. Notably, guar gum consumption with medium-MW increased the cecal amounts of cholic-, chenodeoxycholic-, and ursodeoxycholic acids as well as α-, β-, and ω-muricholic acids to a greater extent than other types of guar gum or the fiber-free control diet. In contrast, the amounts of cecal deoxycholic- and hyodeoxycholic acid were reduced with all types of guar gum independent of chain length. Differences in BA composition between pectin groups were less obvious, but cecal levels of α- and ω-muricholic acids were higher in rats fed LM as compared to HM pectin or the control diet. The inflammatory marker LBP was downregulated in rats fed medium-MW guar gum and HM pectin; these two fibers decreased the cecal abundance of Oscillospira and an unclassified genus in Ruminococcaceae, and increased that of an unclassified family in RF32. These results indicate that the molecular properties of guar gum and pectin are important for their ability to modulate cecal BA formation, gut microbiota composition, and high-fat diet induced inflammation.
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Affiliation(s)
| | | | - Frida Fåk
- Food for Health Science Centre, Lund University, Lund, Sweden
| | - Margareta Nyman
- Food for Health Science Centre, Lund University, Lund, Sweden
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Alves AD, Cavaco JS, Guerreiro F, Lourenço JP, Rosa da Costa AM, Grenha A. Inhalable Antitubercular Therapy Mediated by Locust Bean Gum Microparticles. Molecules 2016; 21:molecules21060702. [PMID: 27240337 PMCID: PMC6273308 DOI: 10.3390/molecules21060702] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 05/14/2016] [Accepted: 05/19/2016] [Indexed: 12/23/2022] Open
Abstract
Tuberculosis remains a major global health problem and alternative therapeutic approaches are needed. Considering the high prevalence of lung tuberculosis (80% of cases), the pulmonary delivery of antitubercular drugs in a carrier system capable of reaching the alveoli, being recognised and phagocytosed by alveolar macrophages (mycobacterium hosts), would be a significant improvement to current oral drug regimens. Locust bean gum (LBG) is a polysaccharide composed of galactose and mannose residues, which may favour specific recognition by macrophages and potentiate phagocytosis. LBG microparticles produced by spray-drying are reported herein for the first time, incorporating either isoniazid or rifabutin, first-line antitubercular drugs (association efficiencies >82%). Microparticles have adequate theoretical properties for deep lung delivery (aerodynamic diameters between 1.15 and 1.67 μm). The cytotoxic evaluation in lung epithelial cells (A549 cells) and macrophages (THP-1 cells) revealed a toxic effect from rifabutin-loaded microparticles at the highest concentrations, but we may consider that these were very high comparing with in vivo conditions. LBG microparticles further evidenced strong ability to be captured by macrophages (percentage of phagocytosis >94%). Overall, the obtained data indicated the potential of the proposed system for tuberculosis therapy.
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Affiliation(s)
- Ana D Alves
- Center for Biomedical Research (CBMR), Faculty of Sciences and Technology, University of Algarve, 8005-139 Faro, Portugal.
| | - Joana S Cavaco
- Center for Biomedical Research (CBMR), Faculty of Sciences and Technology, University of Algarve, 8005-139 Faro, Portugal.
| | - Filipa Guerreiro
- Center for Biomedical Research (CBMR), Faculty of Sciences and Technology, University of Algarve, 8005-139 Faro, Portugal.
- Centre for Marine Sciences (CCMar), University of Algarve, 8005-139 Faro, Portugal.
| | - João P Lourenço
- Centro de Química Estrutural (CQE), Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal.
- Algarve Chemistry Research Center (CIQA) and Department of Chemistry and Pharmacy, Faculty of Sciences and Technology, University of Algarve, 8005-139 Faro, Portugal.
| | - Ana M Rosa da Costa
- Algarve Chemistry Research Center (CIQA) and Department of Chemistry and Pharmacy, Faculty of Sciences and Technology, University of Algarve, 8005-139 Faro, Portugal.
| | - Ana Grenha
- Center for Biomedical Research (CBMR), Faculty of Sciences and Technology, University of Algarve, 8005-139 Faro, Portugal.
- Centre for Marine Sciences (CCMar), University of Algarve, 8005-139 Faro, Portugal.
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Affiliation(s)
- John L Wallace
- Department of Physiology and Pharmacology, University of Calgary, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada.
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Mo WY, Cheng Z, Choi WM, Lun CHI, Man YB, Wong JTF, Chen XW, Lau SCK, Wong MH. Use of food waste as fish feeds: effects of prebiotic fibers (inulin and mannanoligosaccharide) on growth and non-specific immunity of grass carp (Ctenopharyngodon idella). Environ Sci Pollut Res Int 2015; 22:17663-17671. [PMID: 26150295 DOI: 10.1007/s11356-015-4971-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 06/29/2015] [Indexed: 06/04/2023]
Abstract
The effects of inulin and mannanoligosaccharide (MOS) on the growth performance and non-specific immunity of grass carp were studied. Two doses of prebiotic fiber with 0.2 or 2% of the fibers are being mixed into fish feed pellets. Fish growth as well as selected non-specific immune parameters of grass carp were tested in a feeding trial, which lasted for 8 weeks. Fish was fed at 2.5% body mass per day. INU02, INU2, and MOS2 significantly improved relative weight gain, specific growth rate, protein efficiency ratio, and food conversion ratio of grass carp fed with food waste-based diet. In terms of non-specific immune response, grass carp showed significant improvement in all three tested parameters (total serum immunoglobin, bactericidal activity, and anti-protease activity). Adding 2% of inulin (INU2) into food waste diets seemed to be more preferable than other supplemented experimental diets (INU02, MOS02, MOS2), as it could promote growth of grass carp as well as improving the non-specific immune systems of grass carp.
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Affiliation(s)
- Wing Y Mo
- Consortium on Health, Environment, Education and Research (CHEER) and Department of Science and Environmental Studies, The Hong Kong Institute of Education, Tai Po, Hong Kong, China
- Croucher Institute for Environmental Sciences and Department of Biology, Hong Kong Baptist University, Hong Kong, China
| | - Zhang Cheng
- College of Resources and Environment, Sichuan Agricultural University, Chengdu, China
| | - Wai M Choi
- Consortium on Health, Environment, Education and Research (CHEER) and Department of Science and Environmental Studies, The Hong Kong Institute of Education, Tai Po, Hong Kong, China
- Croucher Institute for Environmental Sciences and Department of Biology, Hong Kong Baptist University, Hong Kong, China
| | - Clare H I Lun
- Environmental Science Programs, School of Science, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Yu B Man
- Croucher Institute for Environmental Sciences and Department of Biology, Hong Kong Baptist University, Hong Kong, China
| | - James T F Wong
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, SAR, China
| | - Xun W Chen
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, SAR, China
| | - Stanley C K Lau
- Division of Life Science, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Ming H Wong
- Consortium on Health, Environment, Education and Research (CHEER) and Department of Science and Environmental Studies, The Hong Kong Institute of Education, Tai Po, Hong Kong, China.
- Croucher Institute for Environmental Sciences and Department of Biology, Hong Kong Baptist University, Hong Kong, China.
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Zhao H, Li C, Beck BH, Zhang R, Thongda W, Davis DA, Peatman E. Impact of feed additives on surface mucosal health and columnaris susceptibility in channel catfish fingerlings, Ictalurus punctatus. Fish Shellfish Immunol 2015; 46:624-637. [PMID: 26164837 DOI: 10.1016/j.fsi.2015.07.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 06/26/2015] [Accepted: 07/06/2015] [Indexed: 06/04/2023]
Abstract
One of the highest priority areas for improvement in aquaculture is the development of dietary additives and formulations which provide for complete mucosal health and protection of fish raised in intensive systems. Far greater attention has been paid to dietary impact on gut health than to protective effects at other mucosal surfaces such as skin and gill. These exterior surfaces, however, are important primary targets for pathogen attachment and invasion. Flavobacterium columnare, the causative agent of columnaris disease, is among the most prevalent of all freshwater disease-causing bacteria, impacting global aquaculture of catfish, salmonids, baitfish and aquaria-trade species among others. This study evaluated whether the feeding of a standard catfish diet supplemented with Alltech dietary additives Actigen(®), a concentrated source of yeast cell wall-derived material and/or Allzyme(®) SSF, a fermented strain of Aspergillus niger, could offer protection against F. columnare mortality. A nine-week feeding trial of channel catfish fingerlings with basal diet (B), B + Allzyme(®) SSF, B + Actigen(®) and B + Actigen(®)+Allzyme(®) SSF revealed good growth in all conditions (FCR < 1.0), but no statistical differences in growth between the treatments were found. At nine weeks, based on pre-challenge trial results, basal, B + Actigen(®), and B + Allzyme(®) SSF groups of fish were selected for further challenges with F. columnare. Replicated challenge with a virulent F. columnare strain, revealed significantly longer median days to death in B + Allzyme(®) SSF and B + Actigen(®) when compared with the basal diet (P < 0.05) and significantly higher survival following the eight day challenge period in B + Actigen(®) when compared with the other two diets (P < 0.05). Given the superior protection provided by the B + Actigen(®) diet, we carried out transcriptomic comparison of gene expression of fish fed that diet and the basal diet before and after columnaris challenge using high-throughput RNA-seq. Pathway and enrichment analyses revealed changes in mannose receptor DEC205 and IL4 signaling at 0 h (prior to challenge) which likely explain a dramatic divergence in expression profiles between the two diets soon after pathogen challenge (8 h). Dietary mannose priming resulted in reduced expression of inflammatory cytokines, shifting response patterns instead to favor resolution and repair. Our results indicate that prebiotic dietary additives may provide protection extending beyond the gut to surface mucosa.
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Affiliation(s)
- Honggang Zhao
- School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL 36849, USA
| | - Chao Li
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao 266109, China
| | - Benjamin H Beck
- United States Department of Agriculture, Agricultural Research Service, Stuttgart National Aquaculture Research Center, Stuttgart, AR 72160, USA
| | - Ran Zhang
- School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL 36849, USA
| | - Wilawan Thongda
- School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL 36849, USA
| | - D Allen Davis
- School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL 36849, USA
| | - Eric Peatman
- School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL 36849, USA.
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Kaity S, Ghosh A. Comparative bio-safety and in vivo evaluation of native or modified locust bean gum-PVA IPN microspheres. Int J Biol Macromol 2015; 72:883-93. [PMID: 25307127 DOI: 10.1016/j.ijbiomac.2014.09.036] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 09/16/2014] [Accepted: 09/21/2014] [Indexed: 11/28/2022]
Abstract
Strategically developed natural polymer-based controlled release multiparticulate drug delivery systems have gained special interest for “spatial placement” and “temporal delivery” of drug molecules. In our earlier study, locust bean gum-poly(vinyl alcohol) interpenetrating polymer network (LBG-PVA IPN), carboxymethylated locust bean gum-poly(vinyl alcohol) interpenetrating polymer network (CMLBG-PVA IPN) and acrylamide grafted locust bean gum-poly(vinyl alcohol) interpenetrating polymer network (Am-g-LBG-PVA IPN) were prepared and characterized. The present study deals with accelerating stability testing, comparative bio-safety and single dose in vivo pharmacokinetic study of all three IPN microspheres for controlled oral delivery of buflomedil hydrochloride (BH). From the stability study, it was observed that the particles were stable throughout the study period. From toxicity and biodegradability study it was proved that the microspheres were safe for internal use and complied with bio-safety criterion. From the in vivo pharmacokinetic study in rabbits, it was observed that the CMLBG-PVA IPN microspheres possessed almost similar Tmax value with BH oral suspension. However, in comparison between the LBG-PVA and Am-g-LBG-PVA IPN microspheres, the later showed well controlled release property than the first in biological condition. Thus, this type of delivery system might be useful to achieve the lofty goals of the controlled release drug delivery.
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Abstract
Currently, there are over 70 licensed vaccines, which prevent the pathogenesis of around 30 viruses and bacteria. Nevertheless, there are still important challenges in this area, which include the development of more active, non-invasive, and thermo-resistant vaccines. Important biotechnological advances have led to safer subunit antigens, such as proteins, peptides, and nucleic acids. However, their limited immunogenicity has demanded potent adjuvants that can strengthen the immune response. Particulate nanocarriers hold a high potential as adjuvants in vaccination. Due to their pathogen-like size and structure, they can enhance immune responses by mimicking the natural infection process. Additionally, they can be tailored for non-invasive mucosal administration (needle-free vaccination), and control the delivery of the associated antigens to a specific location and for prolonged times, opening room for single-dose vaccination. Moreover, they allow co-association of immunostimulatory molecules to improve the overall adjuvant capacity. The natural and ubiquitous character of polysaccharides, together with their intrinsic immunomodulating properties, their biocompatibility, and biodegradability, justify their interest in the engineering of nanovaccines. In this review, we aim to provide a state-of-the-art overview regarding the application of nanotechnology in vaccine delivery, with a focus on the most recent advances in the development and application of polysaccharide-based antigen nanocarriers.
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Affiliation(s)
- Ana Sara Cordeiro
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Health Research Institute of Santiago de Compostela (IDIS), School of Pharmacy, University of Santiago de Compostela, Campus Vida, 15706 Santiago de Compostela, Spain; Nano-oncologicals Lab, Translational Medical Oncology group, Health Research Institute of Santiago de Compostela (IDIS), University Hospital Complex of Santiago de Compostela (CHUS), SERGAS, Santiago de Compostela, Spain
| | - María José Alonso
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Health Research Institute of Santiago de Compostela (IDIS), School of Pharmacy, University of Santiago de Compostela, Campus Vida, 15706 Santiago de Compostela, Spain
| | - María de la Fuente
- Nano-oncologicals Lab, Translational Medical Oncology group, Health Research Institute of Santiago de Compostela (IDIS), University Hospital Complex of Santiago de Compostela (CHUS), SERGAS, Santiago de Compostela, Spain.
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Alam NH, Ashraf H, Kamruzzaman M, Ahmed T, Islam S, Olesen MK, Gyr N, Meier R. Efficacy of partially hydrolyzed guar gum (PHGG) supplemented modified oral rehydration solution in the treatment of severely malnourished children with watery diarrhoea: a randomised double-blind controlled trial. J Health Popul Nutr 2015; 34:3. [PMID: 26825757 PMCID: PMC5026008 DOI: 10.1186/s41043-015-0003-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 11/01/2014] [Indexed: 05/12/2023]
Abstract
OBJECTIVES To examine whether PHGG added ORS reduce duration of diarrhoea, stool output and enhance weight gain. METHODS In a double-blind controlled clinical trial, 126 malnourished children (weight for length/weight for age < -3 Z-score with or without pedal edema), aged 6 - 36 months with acute diarrhoea <7 days were studied in two treatment groups; 63 received modified WHO ORS (Na 75, K 40, Cl 87, citrate 7, glucose 90 mmol/L) with PHGG 15 g/L (study group); 63 received modified WHO ORS without PHGG (control). Other treatments were similar in both groups. The study protocol was approved by Ethics Committee of icddr,b; the study was carried out at the Dhaka Hospital. RESULTS The mean duration of diarrhoea (h) was significantly shorter in children of the study group (Study vs. control, mean ± SD, 57 ± 31 vs. 75 ± 39, p = 0.01). Although there was a trend in stool weight reduction in children receiving ORS with PHGG (study vs. control, stool weight (g), mean ± SD; 1(st) 24 hour, 854.03 ± 532.15 vs. 949.11 ± 544.33, p = 0.32; 2(nd) 24 hour, 579.84 ± 466.01 vs. 761.26 ± 631.64, p = 0.069; 3(rd) 24 hour, 385.87 ± 454.09 vs. 495.73 ± 487.61, p = 0.196), especially in 2(nd) 24 h period, the difference was not statistically significant. The mean time (day) to attain weight for length 80% of NCHS median without edema was significantly shorter in the study group (study vs. control, mean ± SD, 4.5 ± 2.6 vs. 5.7 ± 2.8, p = 0.027). CONCLUSION PHGG added to ORS substantially reduced duration of diarrhoea. It also enhanced weight gain. Further studies might substantiate to establish its beneficial effect. CLINICAL TRIAL REGISTRATION NUMBER NCT01821586.
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Affiliation(s)
- Nur Haque Alam
- International Centre for Diarrheal Disease Research Bangladesh (icddr,b), Dhaka, Bangladesh.
| | - Hasan Ashraf
- International Centre for Diarrheal Disease Research Bangladesh (icddr,b), Dhaka, Bangladesh.
| | - Mohammad Kamruzzaman
- International Centre for Diarrheal Disease Research Bangladesh (icddr,b), Dhaka, Bangladesh.
| | - Tahmeed Ahmed
- International Centre for Diarrheal Disease Research Bangladesh (icddr,b), Dhaka, Bangladesh.
| | - Sufia Islam
- Department of Pharmacy, East West University, Dhaka, Bangladesh.
| | | | - Niklaus Gyr
- Department of Internal Medicine, University Hospital, Basel, Switzerland.
| | - Remy Meier
- Department of Gastroenterology, Hepatology and Nutrition, Kantonsspital, Liestal, Switzerland.
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Abstract
INTRODUCTION Glucomannan (GNN), a water-soluble dietary fibre derived from the plant Amorphophallus konjac, is marketed for weight reduction. The exact mechanisms by which GNN might exert its actions are unclear. However, it has been shown that GNN slows gastric emptying by forming a viscous gel of large volume, which increases the feeling of satiety. Current evidence on the effectiveness of GNN for weight reduction is sparse, and well-designed trials performed in children are needed to assess the efficacy of this modality. We aim to systematically evaluate the efficacy of GNN consumption for the management of children who are overweight or obese. METHODS AND ANALYSIS Children aged 6-17 years who are overweight or obese (based on the WHO growth criteria) will be randomly assigned to receive GNN or placebo (maltodextrin) (both at a dose of 3 g/day) for 3 months and will be followed-up for 3 months. Before the intervention, all children will receive dietetic advice, and they will be encouraged to engage in physical activity. The primary outcome measure will be the body mass index-for-age z-score difference between the groups at the end of the intervention. ETHICS AND DISSEMINATION The study was approved by the Bioethics Committee of the Medical University of Warsaw. The findings of this trial will be submitted to a peer-reviewed journal (paediatric, nutrition or gastroenterology). Abstracts will be submitted to relevant national and international conferences. TRIAL REGISTRATION NUMBER NCT02280772.
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Affiliation(s)
| | - Hania Szajewska
- Department of Paediatrics, The Medical University of Warsaw, Warsaw, Poland
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De Leo V, Tosti C, Cappelli V, Morgante G, Cianci EA. [Combination inositol and glucomannan in PCOS patients]. Minerva Ginecol 2014; 66:527-533. [PMID: 25373012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM Polycystic ovary syndrome (PCOS) is one of the most common endocrinopathies of the reproductive age in women. PCOS is an endocrine-metabolic disorder characterized by insulin resistance. Aim of the study was to evaluate the efficacy of natural substances such as inositol and glucomannan, and their combination in reducing glucose levels and improving insulin sensitivity in PCOS patients. METHODS Forty women with clinical and endocrinological signs of PCOS were enrolled in the study and divided into three groups, including ten women each. The three groups were respectively treated with the combination inositol and glucomannan (A group), inositol (B group), glucomannan (C group) for a period of 3 months. Plasma levels of glucose and insulin were evaluated before and after treatment in our laboratory. RESULTS There was a reduction in blood glucose and insulin levels, with particular significance in the group treated with the combination of inositol-glucomannan. CONCLUSION Present results show that the association-inositol glucomannan may represent a good therapeutic strategy in the treatment of PCOS women with insulin resistance.
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Affiliation(s)
- V De Leo
- Centro di Sterilità di Coppia, Dipartimento di Medicina Molecolare e dello Sviluppo, Università degli Studi di Siena, Siena, Italia -
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Zhang L, Wu Y, Wang L, Wang H. Effects of Oxidized Konjac glucomannan (OKGM) on growth and immune function of Schizothorax prenanti. Fish Shellfish Immunol 2013; 35:1105-1110. [PMID: 23883580 DOI: 10.1016/j.fsi.2013.07.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 07/09/2013] [Accepted: 07/11/2013] [Indexed: 06/02/2023]
Abstract
Schizothorax prenanti is an important existemic commercial fish in River Yangtze. OKGM (Oxidized Konjac glucomannan) is a kind of polysaccharide oxidative degraded from KGM. Added 500, 1000, 2000, 4000, 8000 mg/kg OKGM into the diets of S. prenanti. After 60 days feeding trial, WGR (weight gain rate), SGR (specific growth rate), PER (protein efficiency ratio) of groups fed the diet with 8000 mg/kg OKGM was all significantly (P < 0.05) higher; FCR (feed conversion ratio) was significantly lower than the control group whose diet have no OKGM. Hepatopancreas index, spleen index of group 6 whose feed added 8000 mg/kg OKGM were significantly higher and gallbladder index was significantly lower than the control group. Erythrocyte number, leukocyte number of group 5, 6 whose feed added 4000, 8000 mg/kg OKGM were excellent significantly (P < 0.01) more than the control group. At the same time, Erythrocyte phagocytic rate, erythrocyte phagocytic index, neutrophilic granulocyte phagocytic rate, neutrophilic granulocyte phagocytic index of all the groups whose diet added OKGM were significantly higher than the control group. Content of IgM, C3 of group 4 whose feed added 2000 mg/kg OKGM were significantly more than the control group. As for activity of CAT, group 6 was significantly higher than the control group. When compared activity of SOD, group 6 was significantly higher than group 1, 2, 3. Accordingly, activity of GSH-Px of group 3, 4, 5, 6 were significantly higher than the control group. On the contrary, content of MDA, group 3, 4, 5, 6 whose feed added 1000-8000 mg/kg OKGM was excellent significantly lower than the control group. After injected Aeromonas hydrophila 21 days, only group 6 whose feed added 8000 mg/kg OKGM survived excellent significantly more than the control group. So we can draw a conclusion of that added OKGM in the diets of S. prenanti, not only promoted growth, but also improved immune function, and the best dose was 8000 mg/kg in this experiment.
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Affiliation(s)
- Liao Zhang
- Institute of Animal Nutrition, Sichuan Agricultural University, Yaan, 625014 Sichuan, PR China
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Liu B, Xu L, Ge X, Xie J, Xu P, Zhou Q, Pan L, Zhang Y. Effects of mannan oligosaccharide on the physiological responses, HSP70 gene expression and disease resistance of Allogynogenetic crucian carp (Carassius auratus gibelio) under Aeromonas hydrophila infection. Fish Shellfish Immunol 2013; 34:1395-1403. [PMID: 23481213 DOI: 10.1016/j.fsi.2013.02.028] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2012] [Revised: 02/18/2013] [Accepted: 02/18/2013] [Indexed: 06/01/2023]
Abstract
We evaluated the effect of dietary supplementation with mannan oligosaccharide (MOS) on the resistance to Aeromonas hydrophi1a infection in Allogynogenetic crucian carp. The fish were randomly divided into five groups: a control group was fed with basal diet, and four treatment groups fed with basal diet supplemented with 60, 120, 240, 480 mg/kg MOS for 10 weeks, respectively. We then challenged the fish with A. hydrophi1a and recorded the mortality and the changes in serum cortisol, T3, T4, lysozyme, alkaline phosphatase (ALP), globin and hepatic total anti-oxidative capacity, superoxide dismutase (SOD), malondialdehyde (MDA) and the relative expression of heat shock protein 70 (HSP70) mRNA for a period of 7 d. Supplementation with 240 mg/kg MOS significantly increased serum ALP activity before infection, 1d and 2d after infection, serum globin concentration prior to infection, 1d and 7d after infection, serum lysozyme activity at 2d after infection, T3 concentration at 2d after infection, hepatic total anti-oxidative capacity prior to infection, hepatic SOD activity at 7d after infection and reduced serum cortisol concentration at 2d after infection, hepatic malondialdehyde content at 1d and 2d after infection. Supplementation with 480 mg/kg MOS significantly increased serum ALP activity before infection, 1d and 2d after infection, T3 content 1d after infection, T4 content prior infection and 7d after infection, serum globin concentration prior to infection, 1d and 7d after infection, serum lysozyme activity prior infection and 1d after infection, serum total anti-oxidative capacity prior to infection and 7d after infection, hepatic SOD activity at 7d after infection and the relative level of hepatic HSP70 mRNA at 2d and 7d after infection, had decreased levels of serum cortisol concentration before the infection, at 2d after infection, T4 concentration at 1d and 2d after infection, hepatic malondialdehyde content at 1d and 2d after infection. Mortality was significantly lower in the group of 240 and 480 mg/kg MOS than the control. Our results suggest that ingestion of a basal diet supplemented with 240-480 mg/kg MOS can enhance resistance against pathogenic infections in Allogynogenetic crucian carp.
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Affiliation(s)
- Bo Liu
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China.
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