scholarly journals The Effects of Dietary Supplementation of Lactococcus lactis Strain Plasma on Skin Microbiome and Skin Conditions in Healthy Subjects—A Randomized, Double-Blind, Placebo-Controlled Trial

2021 ◽  
Vol 9 (3) ◽  
pp. 563
Author(s):  
Ryohei Tsuji ◽  
Kamiyu Yazawa ◽  
Takeshi Kokubo ◽  
Yuumi Nakamura ◽  
Osamu Kanauchi
Keyword(s):  
Gene Expression ◽  
Lactococcus Lactis ◽  
Healthy Subjects ◽  
Controlled Trial ◽  
Dietary Supplementation ◽  
Skin Microbiome ◽  
Double Blind ◽  
Double Blind Placebo ◽  
Lactis Strain ◽  
Skin Conditions

(1) Background: Lactococcus lactis strain Plasma (LC-Plasma) is a unique strain which directly activates plasmacytoid dendritic cells, resulting in the prevention against broad spectrum of viral infection. Additionally, we found that LC-Plasma intake stimulated skin immunity and prevents Staphylococcus aureus epicutaneous infection. The aim of this study was to investigate the effect of LC-Plasma dietary supplementation on skin microbiome, gene expression in the skin, and skin conditions in healthy subjects. (2) Method: A randomized, double-blind, placebo-controlled, parallel-group trial was conducted. Seventy healthy volunteers were enrolled and assigned into two groups receiving either placebo or LC-Plasma capsules (approximately 1 × 1011 cells/day) for 8 weeks. The skin microbiome was analyzed by NGS and qPCR. Gene expression was analyzed by qPCR and skin conditions were diagnosed by dermatologists before and after intervention. (3) Result: LC-Plasma supplementation prevented the decrease of Staphylococcus epidermidis and Staphylococcus pasteuri and overgrowth of Propionibacterium acnes. In addition, LC-Plasma supplementation suggested to increase the expression of antimicrobial peptide genes but not tight junction genes. Furthermore, the clinical scores of skin conditions were ameliorated by LC-Plasma supplementation. (4) Conclusions: Our findings provided the insights that the dietary supplementation of LC-Plasma might have stabilizing effects on seasonal change of skin microbiome and skin conditions in healthy subjects.

Effects of sucralose on insulin and glucagon-like peptide-1 secretion in healthy subjects: a randomized, double-blind, placebo-controlled trial

Nutrition ◽  
2018 ◽  
Vol 55-56 ◽  
pp. 125-130 ◽  
Author(s):  
Amornpan Lertrit ◽  
Sasinee Srimachai ◽  
Sunee Saetung ◽  
Suwannee Chanprasertyothin ◽  
La-or Chailurkit ◽  
...  
Keyword(s):  
Healthy Subjects ◽  
Controlled Trial ◽  
Double Blind ◽  
Double Blind Placebo ◽  
Glucagon Like Peptide ◽  
Glucagon Like Peptide 1

scholarly journals Correction: Marhuenda, J., et al. A Randomized, Double-Blind, Placebo Controlled Trial to Determine the Effectiveness a Polyphenolic Extract (Hibiscus sabdariffa and Lippia citriodora) in the Reduction of Body Fat Mass in Healthy Subjects. Foods 2020, 9(1), 55

Foods ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 279
Author(s):  
Javier Marhuenda ◽  
Silvia Perez-Piñero ◽  
Desirée Victoria-Montesinos ◽  
María Salud Abellán-Ruiz ◽  
Nuria Caturla ◽  
...  
Keyword(s):  
Body Fat ◽  
Fat Mass ◽  
Healthy Subjects ◽  
Controlled Trial ◽  
Body Fat Mass ◽  
Hibiscus Sabdariffa ◽  
Double Blind ◽  
Double Blind Placebo ◽  
Lippia Citriodora ◽  
Polyphenolic Extract

The authors wish to make the following correction to this paper [...]

scholarly journals Effects of Heat-Killed Lactococcus lactis Strain Plasma on Skin Homeostasis-Related Genes and the Skin Microbiome among Healthy Adults: A Randomized Controlled Double-Blind Study

2021 ◽  
Vol 9 (10) ◽  
pp. 2029
Author(s):  
Toshio Fujii ◽  
Takashi Fujitomo ◽  
Ryohei Tsuji ◽  
Ryuichi Kubo ◽  
Yukiko Kato ◽  
...  
Keyword(s):  
Placebo Group ◽  
Oral Administration ◽  
Healthy Volunteers ◽  
Lactococcus Lactis ◽  
Test Period ◽  
Pcr Analysis ◽  
Double Blind Study ◽  
Skin Microbiome ◽  
Double Blind ◽  
Lactis Strain

Lactococcus lactis subsp. lactis strain plasma (LC-plasma) is a bacterial strain that activates plasmacytoid dendritic cells and induces viral resistance genes via the TLR9/MyD88 pathway. We recently showed that oral administration of LC-plasma prevents skin infection by Staphylococcus aureus, possibly by activating skin immunity. In this study, we conducted a double-blind clinical trial to investigate the effect of oral administration of heat-killed LC-plasma on the skin microbiome, gene expression in the skin, and the skin condition of healthy volunteers. Seventy healthy volunteers were randomly assigned to receive either heat-killed LC-plasma or a placebo for eight weeks. Analysis of the skin microbiome by next-generation sequencing suggested that the alpha-diversity of the skin microbiome did not change during the test period in either group. However, the proportion of species that changed significantly during the test period was 10-fold smaller in the LC-plasma group than in the placebo group, suggesting that LC-plasma may maintain the skin microbiome. Quantitative PCR analysis indicated that tight-junction genes, such as CLDN1 and CLDN12, and the antimicrobial peptide gene BD3 were significantly up-regulated in the LC-plasma group but not in the placebo group. Our results suggest that administration of LC-plasma helps to maintain the skin microbiome and that it affects homeostasis-related genes.

scholarly journals Lactococcus lactis Strain Plasma Intake Suppresses the Incidence of Dengue Fever-like Symptoms in Healthy Malaysians: A Randomized, Double-Blind, Placebo-Controlled Trial

Nutrients ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 4507
Author(s):  
Chee-Sieng Khor ◽  
Ryohei Tsuji ◽  
Hai-Yen Lee ◽  
Siti-Sarah Nor’e ◽  
Norhidayu Sahimin ◽  
...  
Keyword(s):  
Dengue Fever ◽  
Lactococcus Lactis ◽  
Clinical Symptoms ◽  
Controlled Trial ◽  
Serum Antibody ◽  
Oral Intake ◽  
Double Blind ◽  
Lactis Strain ◽  
Antigen Tests ◽  
Study Sites

Dengue fever (DF) is a mosquito-borne disease still with no effective treatment or vaccine available. A randomized, placebo-controlled, double-blinded, parallel-group trial was undertaken to evaluate the efficacy of oral intake of Lactococcus lactis strain plasma (LC-Plasma) on the presentation and severity of DF-like symptoms among healthy volunteers. Study participants (320) were assigned into two groups, and consumed either placebo or LC-Plasma tablets (approximately 100 billion cells/day) for 8 weeks. The clinical symptoms of DF were self-recorded through questionnaires, and exposure to DENV was determined by serum antibody and/or DENV antigen tests. No significant differences between groups were observed for exposure to DENV, or the symptomatic ratio. Results obtained showed that participants from the LC-Plasma group reported a significant reduction in the cumulative incidence days of DF-like symptoms, which include fever (p < 0.001), muscle pain (p < 0.005), joint pain (p < 0.001), and pain behind the eyes (p < 0.001), compared to that of the placebo group. Subgroup analysis revealed a significantly (p < 0.05) reduced severity score in the LC-Plasma group when study sites were separately analyzed. Overall, our findings suggest that LC-Plasma supplementation reduces the cumulative days with DF-like symptoms, and the severity of the symptoms. Daily oral intake of LC-Plasma, hence, is shown to mitigate the DF-like symptoms.

scholarly journals The Effects of Skin Aging Associated with the Use of BioCell Collagen: A Randomized, Double-blind, Placebo-controlled Clinical Trial (P06-122-19)

2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Alexander Schauss ◽  
Stephen Schwartz ◽  
Kimberly Hammon ◽  
Anna Gafner Hardy ◽  
Norman Guttman ◽  
...  
Keyword(s):  
Controlled Trial ◽  
Dietary Supplementation ◽  
Skin Surface ◽  
Skin Aging ◽  
Collagen Content ◽  
Controlled Clinical Trial ◽  
Double Blind ◽  
Double Blind Placebo ◽  
Photographic Analysis ◽  
Crow’S Feet

Abstract Objectives The aim of the study intended to correlate the effects of the dietary supplement, BioCell Collagen, with any changes associated with skin aging, since dietary supplements claim cutaneous anti-aging properties for their products; however, research supporting these claims remains sparse. Methods A 12-week, randomized, double-blind, placebo-controlled trial of 128 female subjects, aged 39–59 (50.57 ± 5.55) randomly assigned to treatment or placebo. Intervention: Twice daily oral administration of a supplement containing 500 mg of a naturally occurring matrix of collagen type-II peptides, hyaluronic acid, and chondroitin sulfate, derived from chicken sternal cartilage, or placebo. Primary outcome measures: trans-epidermal water loss, viscoelasticity, hydration, collagen content, chromophore (melanin) content and hemoglobin level, and photographic analysis. Expert visual grading for facial lines/wrinkles, crow's feet lines/wrinkles, skin texture/smoothness, and skin tone. Secondary outcomes: Tolerance and incidence of adverse events. Presence of erythema and/or dryness determined tolerance. Participant's perception of the product's value. Results Dietary supplementation significantly reduced facial lines and wrinkles (p = 0.019), crow's feet lines/wrinkles (p = 0.05), increased skin elasticity (p = 0.05), cutaneous collagen content (p = 0.001), and improved indicators of youthful skin appearance and wrinkle width (p = 0.046), and decreased skin dryness and erythema, compared to placebo. There was no difference between supplement and placebo for skin surface water content or retention. Supplement was well tolerated with no reported adverse reactions. Conclusions Dietary supplementation of this chicken sternal cartilage extract supports the accumulation of types-I/III collagen in skin to promote increased elasticity and reduced skin wrinkling in women 39 to 59 years of age. Funding Sources BioCell Technology, LLC.

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