scholarly journals Influence of Light/Dark Cycles on Body Color, Hepatopancreas Metabolism, and Intestinal Microbiota Homeostasis in Litopenaeus vannamei

2021 ◽  
Vol 8 ◽  
Author(s):  
Lefei Jiao ◽  
Tianmeng Dai ◽  
Xinyue Tao ◽  
Jingjing Lu ◽  
Qicun Zhou
Keyword(s):  
Intestinal Microbiota ◽  
Relative Abundance ◽  
Posttranslational Modifications ◽  
Litopenaeus Vannamei ◽  
The Body ◽  
Shrimp Farming ◽  
Biological Factor ◽  
Constant Darkness ◽  
Body Color ◽  
Dark Treatment

In aquatic animals, the light/dark cycle acts as an important biological factor that influences the entire life cycle. Until present, evidence regarding the regulation of physiological metabolic process under different light/dark cycles is limited in Litopenaeus vannamei. In this study, we mainly investigated the effects of different light/dark cycles (12 h light/12 h dark, 0 h light/24 h dark) on the hepatopancreas metabolism and intestinal microbiota homeostasis in L. vannamei using multiomics techniques. One interesting finding was that the body color of L. vannamei became darker after dark treatment for 8 weeks. Further hepatopancreas transcriptome analysis identified down-regulated genes involved in regulating nutrition metabolism, body-color formation, diurnal rhythm, immune function, hormone levels, and posttranslational modifications. The intestinal microbiota analysis showed that dark treatment-induced alterations in intestinal bacterial abundances in L. vannamei, such as decreased (P < 0.05) relative abundance of Formosa, Demequina, Lutimonas and increased (P < 0.05) relative abundance of Ruegeria, Vibrio, Actibacter, Roseovarius, Ilumatobacter, and Kriegella at the genus level. The microbiota functional analysis demonstrated that the dark treatment mainly increased susceptibility of pathogens, decreased nutrition metabolism, and influenced circadian rhythm. This study indicated for the first time that constant darkness treatment darkened the body color and altered hepatopancreas metabolism and intestinal microbiota homeostasis in L. vannamei, which might give potential clues for improving the productive capacities by changing light/dark cycles in shrimp farming.

scholarly journals Comparative Analysis of the Fecal Bacterial Microbiota of Wintering Whooper Swans (Cygnus Cygnus)

2021 ◽  
Vol 8 ◽  
Author(s):  
Wenxia Wang ◽  
Songlin Huang ◽  
Liangliang Yang ◽  
Guogang Zhang
Keyword(s):  
Intestinal Microbiota ◽  
Relative Abundance ◽  
High Throughput Sequencing ◽  
The Body ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Illumina Hiseq ◽  
Linear Discriminant ◽  
Bacterial Microbiota ◽  
And Control

There are many and diverse intestinal microbiota, and they are closely related to various physiological functions of the body. They directly participate in the host's food digestion, nutrient absorption, energy metabolism, immune response, and many other physiological activities and are also related to the occurrence of many diseases. The intestinal microbiota are extremely important for maintaining normal physical health. In order to explore the composition and differences of the intestinal microbiota of whooper swans in different wintering areas, we collected fecal samples of whooper swans in Sanmenxia, Henan, and Rongcheng, Shandong, and we used the Illumina HiSeq platform to perform high-throughput sequencing of bacterial 16S rRNA genes. Comparison between Sanmenxia and Rongcheng showed no significant differences in ACE, Chao 1, Simpson, and Shannon indices (p > 0.05). Beta diversity results showed significant differences in bacterial communities between two groups [analysis of similarity (ANOSIM): R = 0.80, p = 0.011]. Linear discriminant analysis effect size (LEfSe) analysis showed that at the phylum level, the relative abundance of Actinobacteria was significantly higher in Sanmenxia whooper swans than Rongcheng whooper swans. At the genus level, the amount of Psychrobacter and Carnobacterium in Sanmenxia was significantly higher in Rongcheng, while the relative abundance Catellicoccus and Lactobacillus was significantly higher in Rongcheng than in Sanmenxia. This study analyzed the composition, characteristics, and differences of the intestinal microbiota of the whooper swans in different wintering environments and provided theoretical support for further exploring the relationship between the intestinal microbiota of the whooper swans and the external environment. And it played an important role in the overwintering physiology and ecology, population management, and epidemic prevention and control of whooper swans.

scholarly journals Effect of dietary prebiotic inulin and probiotic Bacillus subtilis and Lactobacillus sp., on the intestinal microbiota of white shrimp Litopenaeus vannamei

Biotecnia ◽  
2021 ◽  
Vol 23 (3) ◽  
Author(s):  
Alberto Peña Rodríguez
Keyword(s):  
Bacillus Subtilis ◽  
Intestinal Microbiota ◽  
Relative Abundance ◽  
Litopenaeus Vannamei ◽  
Control Diet ◽  
Feed Utilization ◽  
White Shrimp ◽  
Control Treatment ◽  
Control Potential ◽  
Bacterial Richness

Juvenile Litopenaeus vannamei (1.05 ± 0.1 g) were fed during 4-week with four experimental diets: control (Ctrl), inulin as prebiotic (5 g kg-1) (Pre), Bacillus subtilis and Lactobacillus sp. as probiotic (1 x 105 CFU g-1) (Pro), and a mix of inulin + B. subtilis and Lactobacillus sp. (5 g kg-1 + 1 x 105 CFU g-1) (Syn). Shrimps fed Syn diet showed significantly better feed utilization and higher growth than those in control diet (P < 0.05). The probiotic employed induced higher intestinal bacterial richness, whereas inulin in feed induced higher bacterial diversity in shrimp intestine. The most dominant bacterial phylum in the shrimp intestine among treatments was Proteobacteria with abundance ranging between 80 and 84 %. Prebiotic diet (Pre) increased relative abundance of Firmicutes in shrimp intestine (2 %) compared to the rest of the treatments (0.6 %). Nevertheless, when probiotics were included in the feed (Pro and Syn), a reduction between 3 and 13 % in the relative abundance of Vibrio sp. in shrimp intestine was observed respect to the control treatment, which represent an advantage to control potential pathogens of this genus.

scholarly journals Involvement of Probiotics and Postbiotics in the Immune System Modulation

Biologics ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 89-110
Author(s):  
Neslihan Yeşilyurt ◽  
Birsen Yılmaz ◽  
Duygu Ağagündüz ◽  
Raffaele Capasso
Keyword(s):  
Immune System ◽  
Pharmaceutical Industry ◽  
Intestinal Microbiota ◽  
Health Benefits ◽  
The Body ◽  
Future Research ◽  
Immune Systems ◽  
Advantages And Disadvantages ◽  
Immune System Modulation ◽  
Molecular Patterns

Intestinal microbiota interacts with other systems, especially the immune system, which is responsible for protecting the body by recognizing “stranger” (pathogen associated molecular patterns-PAMPs) and “danger” (damage-associated molecular patterns-DAMPs) molecular motifs. In this manner, it plays an important role in the pathogenesis of various diseases and health. Despite the use of probiotics that modulate the intestinal microbiota in providing health benefits and in the treatment of diseases, there are some possible concerns about the possibility of developing adverse effects, especially in people with suppressed immune systems. Since probiotics provide health benefits with bioactive compounds, studies are carried out on the use of products containing non-living probiotic microorganisms (paraprobiotics) and/or their metabolites (postbiotics) instead of probiotic products. It is even reported that these microbial compounds have more immunomodulatory activities than living microorganisms via some possible mechanism and eliminates some disadvantages of probiotics. Considering the increasing use of functional foods in health and disease, further studies are needed with respect to the benefits and advantages of parabiotic and/or postbiotic use in the food and pharmaceutical industry as well as immune system modulation. Although probiotics have been extensive studied for a long time, it seems that postbiotics are promising tools for future research and applications according to the recent literature. This review aimed to evaluate the interaction of probiotics and postbiotics with the immune systems and also their advantages and disadvantages in the area of food-pharmaceutical industry and immune system modulation.

scholarly journals Draft Genome Sequence of White Spot Syndrome Virus Isolated from Cultured Litopenaeus vannamei in Mexico

2016 ◽  
Vol 4 (2) ◽  
Author(s):  
Libia Zulema Rodriguez-Anaya ◽  
Jose Reyes Gonzalez-Galaviz ◽  
Ramón Casillas-Hernandez ◽  
Fernando Lares-Villa ◽  
Karel Estrada ◽  
...  
Keyword(s):  
Disease Prevention ◽  
Genome Sequence ◽  
Litopenaeus Vannamei ◽  
White Spot Syndrome Virus ◽  
Draft Genome ◽  
Epidemiological Studies ◽  
Shrimp Farming ◽  
White Spot ◽  
Molecular Diagnostic ◽  
White Spot Syndrome

The first genome sequence of a Mexican white spot syndrome virus is presented here. White spot syndrome is a shrimp pandemic virus that has devastated production in Mexico for more than 10 years. The availability of this genome will greatly aid epidemiological studies worldwide, contributing to the molecular diagnostic and disease prevention in shrimp farming.

Influence of different dietary carbohydrate sources on the growth and intestinal microbiota of Litopenaeus vannamei at low salinity

2016 ◽  
Vol 23 (3) ◽  
pp. 444-452 ◽  
Author(s):  
F. Qiao ◽  
Y.K. Liu ◽  
Y.H. Sun ◽  
X.D. Wang ◽  
K. Chen ◽  
...  
Keyword(s):  
Intestinal Microbiota ◽  
Litopenaeus Vannamei ◽  
Dietary Carbohydrate ◽  
Low Salinity

Effects of fructooligosaccharide on growth, immunity and intestinal microbiota of shrimp (Litopenaeus vannamei ) fed diets with fish meal partially replaced by soybean meal

2018 ◽  
Vol 25 (1) ◽  
pp. 194-204 ◽  
Author(s):  
Xi Hu ◽  
Hong-Ling Yang ◽  
Yang-Yang Yan ◽  
Chun-Xiao Zhang ◽  
Ji-dan Ye ◽  
...  
Keyword(s):  
Intestinal Microbiota ◽  
Soybean Meal ◽  
Litopenaeus Vannamei ◽  
Fish Meal

scholarly journals Role of Nutritive Factors in Infants Sleep Management

2021 ◽  
pp. 20-24
Author(s):  
Tatiana V. Turti ◽  
Irina A. Belyaeva ◽  
Elena P. Bombardirova ◽  
Pavel E. Sadchikov ◽  
Alexander Y. Nagonov
Keyword(s):  
Intestinal Microbiota ◽  
The Body ◽  
Individual Development ◽  
Factors Affecting ◽  
Sleep Management ◽  
Nocturnal Awakening ◽  
Sleep Schedule ◽  
Functional Components ◽  
Crucial Part

The organized infant’s sleep schedule is the crucial part of normal individual development. On the contrary, restless sleep, nocturnal awakening, long wakefulness can lead to deviations in physical, psychomotor, and cognitive development. Feeding schedule organized according to the time of a day and circadian rhythms (chrono-nutrition concept) can be useful for prevention and correction of such disorders. You are aware of the effect of such factors as feeding before night's sleep, nutrition at dark time of a day, diet enriched with triptophane and nucleotides, on the maturation and consolidation of infants sleep. The correlation between intestinal microbiota and factors affecting the circadian and metabolic activity of the body are presented: day-night cycles, sleep and wake, diet and nutrition. Targeted regulation of the intestinal microbiota through products enriched with functional components (prebiotics) can lead to the development of healthy sleep in infants via axis “brain – intestine – microbiota”.

scholarly journals A Triple Threat? The Role of Diet, Nutrition, and the Microbiota in T1D Pathogenesis

2021 ◽  
Vol 8 ◽  
Author(s):  
Emma E. Hamilton-Williams ◽  
Graciela L. Lorca ◽  
Jill M. Norris ◽  
Jessica L. Dunne
Keyword(s):  
Beta Cell ◽  
Intestinal Microbiota ◽  
Beta Cell Function ◽  
Cell Function ◽  
The Body ◽  
Islet Autoimmunity ◽  
Potential Mechanism ◽  
Modifiable Factors ◽  
And Function

In recent years the role of the intestinal microbiota in health and disease has come to the forefront of medical research. Alterations in the intestinal microbiota and several of its features have been linked to numerous diseases, including type 1 diabetes (T1D). To date, studies in animal models of T1D, as well as studies in human subjects, have linked several intestinal microbiota alterations with T1D pathogenesis. Features that are most often linked with T1D pathogenesis include decreased microbial diversity, the relative abundance of specific strains of individual microbes, and altered metabolite production. Alterations in these features as well as others have provided insight into T1D pathogenesis and shed light on the potential mechanism by which the microbiota plays a role in T1D pathogenesis, yet the underlying factors leading to these alterations remains unknown. One potential mechanism for alteration of the microbiota is through diet and nutrition. Previous studies have shown associations of diet with islet autoimmunity, but a direct contributing factor has yet to be identified. Diet, through introduction of antigens and alteration of the composition and function of the microbiota, may elicit the immune system to produce autoreactive responses that result in the destruction of the beta cells. Here, we review the evidence associating diet induced changes in the intestinal microbiota and their contribution to T1D pathogenesis. We further provide a roadmap for determining the effect of diet and other modifiable factors on the entire microbiota ecosystem, including its impact on both immune and beta cell function, as it relates to T1D. A greater understanding of the complex interactions between the intestinal microbiota and several interacting systems in the body (immune, intestinal integrity and function, metabolism, beta cell function, etc.) may provide scientifically rational approaches to prevent development of T1D and other childhood immune and allergic diseases and biomarkers to evaluate the efficacy of interventions.

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