1. Introduction
Probiotics are correctly defined as “live microorganisms that, when administered in adequate amounts, confer a health benefit on the host” [1]. Lactobacillus johnsonii, as one of the typical intestinal probiotics, is widely distributed in the gastrointestinal tracts (GITs) of several hosts, including humans, mice, dogs, poultry, pigs, and honeybees [2,3,4], and has a long history of application in the food and fermented feed industries [5,6]. With the rapid development of science and technology, L. johnsonii has also been recognized as having important applications in many fields such as biology, agriculture, animal husbandry [7], and medicine [8]. Many studies have been conducted on L. johnsonii to explore its specific function and mechanism in different diseases, such as colitis, diarrhea, liver disease, and so on. In animal models and human models, researchers have conducted relevant studies, and it should be noted that a large number of studies show that L. johnsonii exhibits the following beneficial abilities: anti-inflammatory, immunomodulatory, intestinal microflora balance, and intestinal barrier protection. Moreover, L. johnsonii co-evolved with different animals at the species or strain level [9,10], which provides a reasonable basis for speculating on its relationship with health benefits. Lactobacilli represent the types of microorganisms to which the mammalian immune systems have learned not to respond, and this is considered a potential driver for the evolution of the human immune system [9]. According to a substantial body of literature, L. johnsonii has been shown to play a crucial role in modulating the host immune system, by altering macrophage [11], T-cell, and Th2 cytokine levels [12,13] and regulating dendritic cell (DC) function [14].
As of 14 February 2023, we retrieved a total of 1313 results in the Web of Science using “Lactobacillus johnsonii” as a keyword, including 1194 papers, 180 reviews, 46 clinical trials, etc. Although there were studies on the beneficial effects of L. johnsonii on certain diseases, we found that there was no review that comprehensively summarized the potential beneficial effects of L. johnsonii on different diseases to date, and the role L. johnsonii plays in disease treatment is unclear. This review summarizes the potential beneficial effects of different strains of L. johnsonii in a variety of common diseases involving various parts of the body and is useful for other researchers to quickly understand the field and to conduct more refined studies.
2. Comprehensive Characteristics of Identified L. johnsonii
We searched the National Center for Biotechnology Information (NCBI) and overviewed information tables for the L. johnsonii (as of 14 February 2023) (Table S1). From Table S1, it is easy to find that these strains were identified through shotgun metagenomic sequencing from host samples, while others were isolated from the host samples. The strains isolated from the hosts came from different body parts of different hosts in different countries, including the human intestine, mouse forestomach, and pig intestine. Based on the available information, we can know that the earliest strains were collected in 1964. However, the culture conditions required for many strains were not described in detail.
Plasmids, as genetic units in the bacterial cytoplasm independent of chromosomes, facilitate bacterial growth. We searched the name of the strain in NCBI, utilizing “Nucleotide” as the search database. In the record page, we were able to access the strain-related plasmid information, which contains the name, description, sequence, and other relevant details of the plasmid, and we summarized the relevant content to obtain the information in Table 1. We found that 9 of these 149 strains contained plasmids, including DC22.2 which contained four plasmids.
High rates of antibiotic resistance were found in multiple Lactobacill species [15,16,17,18], including L. johnsonii [17]. Among them, tet(W/N/W) are the most widely distributed ARGs in L. johnsonii [18]. However, through an extensive literature search, we found that not much research has been done on the antibiotic resistance of L. johnsonii, which means that more research is needed to characterize the antibiotic resistance of L. johnsonii and to investigate the mechanisms of resistance and the possibility of transmission.
Table 1Summary of plasmid prevalence in L. johnsonii.
| Strain | BioSample | Size (Kb) | Replicons | CDS | Release Date |
|---|---|---|---|---|---|
| FI9785 | SAMEA2272487 | 3.55 | p9785S:NC_012552.1/AY862141.1 [19] | 2 | April 2009 |
| FI9785 | SAMEA2272487 | 26.27 | p9785L:NC_013505.1/FN357112.1 [20] | 26 | November 2009 |
| BS15 | SAMN04631277 | 45.84 | LJBSp1:NZ_CP016630.1/CP016630.1 | 43 | August 2016 |
| UMNLJ22 | SAMN04573146 | 27.88 | pUMNLJ22_1:NZ_CP021705.1/CP021705.1 | 34 | June 2017 |
| UMNLJ22 | SAMN04573146 | 24.93 | pUMNLJ22_2:NZ_CP021706.1/CP021706.1 | 24 | June 2017 |
| UMNLJ21 | SAMN04573145 | 21.52 | pUMNLJ21_1:NZ_CP021701.1/CP021701.1 | 22 | June 2017 |
| UMNLJ21 | SAMN04573145 | 15.25 | pUMNLJ21_2:NZ_CP021702.1/CP021702.1 | 20 | June 2017 |
| pf01 | SAMN02469597 | 26.46 | pLJPF01L:CP024782.1 [21] | 0 | November 2017 |
| pf01 | SAMN02469597 | 14.24 | pLJPF01S:CP024783.1 [21] | 0 | November 2017 |
| LL8 | SAMN13266521 | 77.56 | unnamed:NZ_CM019125.1/CM019125.1 | 73 | December 2019 |
| DC22.2 | SAMN11371966 | 7.65 | pLjDC22.2_1:NZ_CP039262.1/CP039262.1 | 10 | January 2020 |
| DC22.2 | SAMN11371966 | 5.75 | pLjDC22.2_2:NZ_CP039263.1/CP039263.1 | 3 | January 2020 |
| DC22.2 | SAMN11371966 | 7.08 | pLjDC22.1_3:NZ_CP039264.1/CP039264.1 | 4 | January 2020 |
| DC22.2 | SAMN11371966 | 13.77 | pLjDC22.2_4:NZ_CP039265.1/CP039265.1 | 6 | January 2020 |
| G2A | SAMN11618738 | 130.11 | unnamed1:NZ_CP040855.1/CP040855.1 | 154 | March 2020 |
| G2A | SAMN11618738 | 108.72 | unnamed2:NZ_CP040856.1/CP040856.1 | 103 | March 2020 |
| GHZ10a | SAMN16131614 | 13.65 | unnamed1:NZ_CP062069.1/CP062069.1 | 15 | October 2020 |
| GHZ10a | SAMN16131614 | 15.79 | unnamed2:NZ_CP062070.1/CP062070.1 | 18 | October 2020 |
3. Effects of L. johnsonii on Different Diseases
Probiotics may affect the host through a variety of mechanisms, including enhancing the barrier effect of the intestinal epithelium [22,23,24]; regulating immune function [25,26]; producing organic acids [27], such as the production of oleic acid to play an anti-inflammatory role [28]; interacting with intestinal flora [29]; and interacting with the host through the cell surface structure [30]. Not all mechanisms have been confirmed in humans, nor do they exist in every probiotic strain [31]. The results of previous research we have collected indicate that the common mechanism of action of L. johnsonii in different diseases may include regulating immune function, interacting with intestinal flora, and improving barrier function (Figure 1). Table 2 summarizes some relevant studies and results in detail.
4. The Common Mechanism of L. johnsonii in Different Diseases
4.1. Respiratory Insults
Respiratory syncytial virus (RSV) infects nearly all infants by 2 years of age and is the leading cause of bronchiolitis in children worldwide [66]. Kei E. Fujimura et al. provided evidence that L. johnsonii supplementation significantly reduced the RSV-induced pulmonary responses [38], via immunomodulatory metabolites and altered immune function [14]. Their further study demonstrated that Lactobacillus modulation of the maternal microbiome enhanced airway protection against RSV in neonates. Their evidence was prenatal supplementation with L. johnsonii, which decreased inflammatory metabolites in maternal plasma and breastmilk, and offspring plasma, and resulted in a consistent gut microbiome in mothers and their offspring [12]. The experimental results of Chung-Ming Chen et al. showed that intranasal L. johnsonii administration improved lung development in hyperoxia-exposed neonatal mice [67].
4.2. Gastrointestinal Disease
L. johnsonii NCC 533 (first designed La1) (CNCM I-1225) (Nestlé, Switzerland), isolated from human intestinal microbiome, has been well characterized with regard to its potential antimicrobial effects against the major gastric and enteric bacterial pathogens and rotavirus [68]. Helicobacter pylori infections, colitis, Escherichia coli-induced diarrhea, and subclinical necrotizing colitis in farms were all possible results of L. johnsonii (Figure 2).
L. johnsonii La1 has been shown to exert an anti-inflammatory effect in many double-blind, placebo-controlled clinical trials as a drinkable, whey-based La1 culture supernatant [41], as acidified milk containing live La1 cells (LC-1) [39], or as a probiotic-containing dietary product [40,42] to H. pylori-positive asymptomatic volunteers. Dionyssios N. Sgouras et al. observed that a pronounced anti-inflammatory effect was exerted by La1 in particular on H. pylori-associated neutrophilic and lymphocytic infiltration [43], and a similar effect was found in L. johnsonii MH-68 [45]. In addition to the anti-inflammatory effect mentioned, there are other mechanisms that play a role. Some in vitro results suggest that GroEL proteins from La1 and other lactic acid bacteria might play a role in gastrointestinal homeostasis due to their ability to bind to components of the gastrointestinal mucosa and to aggregate H. pylori [69]. L. johnsonii La1 can also produce bacteriocins, which have inhibitory activity against the human gastric pathogen H. pylori [70], and its antibacterial activity was due to the production of lactic acid and (an) unknown inhibitory substance(s) [71]. However, it would seem highly unlikely that an actively secreted bacteriocin produced by La1 would retain activity, given the abundance of proteolytic activity present in the gastric epithelium [46]. L. johnsonii No. 1088, a novel strain that was isolated from the gastric juice of a healthy Japanese male volunteer, can inhibit the growth of H. pylori and suppress gastric acid secretion [44]. The role of such probiotic strains in the complex regulation of proinflammatory signal strength during early infection and other aspects need to be further identified.
Colitis refers to inflammatory lesions of the colon that occur for various reasons, as a broad concept, which can be subdivided into many categories, and it is a common intestinal disease. The main clinical manifestations are diarrhea, abdominal pain, mucus, and pus and blood stool, etc. Ding-Jia-Cheng Jia et al. uncovered that the abundance of L. johnsonii was lessened in colitis and identified that L. johnsonii relieved experimental colitis [49], drawing the same conclusions as Yunchang Zhang et al. [51]. Rogatien Charlet et al. also provided evidence that the mixed gavage of L. johnsonii and B. thetaiotaomicron alleviated acute colitis induced in mice [52]. In addition, L. johnsonii plays a role in the treatment of different E. coli-induced diarrhea, including enteroinvasive E. coli [48] and enterohemorrhagic E. coli [47], by modulating gut microbiota. In addition to E. coli-induced diarrhea, Keyuan Chen et al. demonstrated that L. johnsonii L531 helps to prevent Salmonella typhimurium-induced diarrhea in mice [72].
In the poultry industry, necrotic enteritis (NE), an enteric bacterial disease, significantly impacts the attempts to increase global poultry production, whereas the more prevalent subclinical form of NE (SNE) is usually difficult to detect, thereby causing considerable economic and profitability losses [73]. Hesong Wang et al. demonstrated in a previous study that feed supplementation with L. johnsonii BS15 may prevent the SNE-caused decrease in the growth performance of broilers [53]. The potential mechanisms include enhancing intestinal immunity and blood parameters related to immunity [54], decreasing fat deposition via adjusting the ratio of Firmicutes/Bacteroidetes in the gut [55], and influencing both lipid synthesis and catabolism in the liver [56]. RNA sequencing of gene expression extracted from liver samples also supported this mechanism [57]. In addition to adding L. johnsonii through feed, vaginal injection of L. johnsonii can modulate the mucosal barrier function and fallopian tube microbiota of laying hens, which may improve egg biosecurity [74].
4.3. Mental Health
The causes of mental health problems are complex. In recent years, many researchers have offered new insights into mental health problems from the perspective of the gut microbiome [75]. The association between the gut environment, host behavior, and potential psychobiotics/probiotics has been extensively investigated presently [76]. Studies have shown that L. johnsonii is a potentially beneficial bacterium that can improve memory impairment and modulate metabolism-related disorders through the brain–gut axis (Figure 3). The hippocampus is considered a crucial brain region in memory ability [77]; therefore, much of the research has focused on inducing hippocampus-related memory dysfunction in animal models and using this as a premise to identify potential psychobiotics or probiotics. In a mouse model of colitis, treatment with L. johnsonii restored the disturbed gut microbiome composition, lowered the gut microbiome, and attenuated memory impairment and colitis [78]. Ning Sun et al. demonstrated that L. johnsonii BS15 can prevent memory dysfunction induced by chronic high-fluorine intake through modulating the intestinal environment and improving gut development [59], and Jinge Xin et al. came to a similar conclusion [58]. Hesong Wang et al. concluded that L. johnsonii BS15 pretreatment enhanced intestinal health and prevented hippocampus-related memory dysfunction [30,31]. All of these indicate the psychoactive effects of L. johnsonii BS15 on positively influencing the brain–gut axis. In the description of mechanisms on how L. johnsonii BS15 yields positive psychiatric effects in psychopathology through the brain–gut axis, they all mentioned the intestinal barrier protective effects of this potential psychobiotic. The present results show that L. johnsonii BS15 pretreatment can reduce levels of TNF-α, IFN-γ, and IL-1β in the small intestines of mice. This result indicates the ability of L. johnsonii BS15 to protect the intestines from inflammation (development, digestive enzyme activities, and anti-inflammatory level). The results show that L. johnsonii BS15 can inhibit proinflammatory cytokines (TNF-α, IFN-γ, and IL-1β) or increase anti-inflammatory cytokines (IL-4 and IL-10) to maintain intestinal integrity [26,27].
4.4. Obesity
In the above reference to SNE, it was noted that L. johnsonii can decrease fat deposition in broiler chickens. This suggests to us that it may also have some beneficial effects on obesity. For rats on a high-fat diet, non-viable L. johnsonii JNU3402 (NV-LJ3402) [63], L. johnsonii N6.2, and blueberry phytophenols [62] can help correct diet-induced dyslipidemia. Another strain, L. johnsonii BFE6154, was also proved to protect against diet-induced hypercholesterolemia through the regulation of cholesterol metabolism in the intestine and liver [64]. In another species, Shaziling pigs, Jie Ma et al. found similar results, namely that L. johnsonii could promote lipid deposition and metabolism [79]. As obesity is a possible risk factor for diabetes, there are also some studies that have targeted diabetes, and found that a multi-strain probiotic supplement including L. johnsonii MH-104 [37], L. johnsonii MH-68 [36], and L. johnsonii N6.2 [33] can reduce diabetes in rats by reducing inflammation and other aspects [34,35,80,81].
4.5. Liver Diseases
There has been a rise in the prevalence of nonalcoholic fatty liver disease (NAFLD) and its more advanced stage, nonalcoholic steatohepatitis (NASH), and this rising disease prevalence will cause an increase in the number of patients with cirrhosis and end-stage liver disease [82]. Insulin resistance, mitochondrial dysfunction, and oxidative stress may all play a role in the disease’s pathogenesis [36,37]. Furthermore, NAFLD can be characterized by inflammation, hepatic steatosis, and hepatocyte apoptosis [83]. Jinge Xin et al. suggested that the treatment with L. johnsonii BS15 may prevent diet-induced NAFLD through adjusting gut flora; improving mitochondrial dysfunction; and reducing gut permeability, serum levels of LPS and IR, and inflammation [65]. Another research study of host glycolipid metabolism noted that L. johnsonii NCC 533 can increase the level of GSH in the serum of mice, boost mitochondrial morphology and function in the liver, reduce hepatic lipids, and improve systemic glucose metabolism [84].
The study on the protecting mechanism of Inonotus hispidus against acute alcoholic liver injury additionally mentioned its ability to upregulate L. johnsonii abundance to safeguard mice from acute alcoholic liver injury [85]. A similar potential mechanism of action was additionally seen in the BaWeiBaiDuSan (BWBDS) protection against sepsis-induced liver injury (SILI) in mice [11].
In addition to the above diseases, there are several studies targeting the treatment of other diseases. L. johnsonii NCC533 (La1) has recently been shown to protect against atopic dermatitis in mice if introduced during the weaning period [32]. L. johnsonii 6084 alleviated sepsis-induced organ injury by modulating gut microbiota. Vazquez-Munoz et al. discovered L. johnsonii had excellent probiotic properties and can prevent or treat mucocutaneous candidiasis [86], especially vulvovaginal candidiasis [87], and that L. johnsonii UBLJ01 is a potential candidate for vaginal probiotics [88]. L. johnsonii has also be found to delay osteoarthritis progression [89] and alleviate the development of acute myocardial infarction [90].
5. Conclusions and Perspectives
Our summary of recent studies on the effects of L. johnsonii on different diseases shows that L. johnsonii acts via a variety of means, including the modulation of immune function, interaction with resident microbiota, interfacing with the host, and improving gut barrier integrity. Although multiple mechanisms are probably co-expressed in a single probiotic, the generation of any given mechanism will depend on many factors, including the physiological state of the host, etc. Despite the complexity of the gastrointestinal tract microbiome, the presence or absence of specific bacterial species can dramatically alter the adaptive immune environment and intestinal environment, such as the different strains of L. johnsonii mentioned above. As various links between the intestinal microbiome and other organs, termed such as the “gut-lung axis” [91], have been proposed in recent years, more attention has begun to be focused on the deeper mechanisms of disease, and a number of researchers have suggested the impact of environmental exposures on the gastrointestinal microbiome, which in turn has an impact on host immunity and thus on the development of host diseases. This has led to greater attention to microbes as an intermediate factor when considering disease.
Bacterial antimicrobial resistance (AMR) to antibiotics has dramatically increased over the past few years due to the overuse of antibiotics, among other factors, and has already reached a level that poses a significant risk to future patients [92,93]. To combat the growing problem of AMR, there is a major dearth of research and development of new antibiotics; therefore, people must turn to other alternative medicines, such as probiotic-related products and their metabolites. Furthermore, if there are numerous pertinent research studies on the potential benefits of probiotics on a particular disease, the majority of them used rat models, which are insufficient to capture the complex variety of pathogenic changes that occur throughout the progression of human diseases. To fully understand the specific potential mechanism between probiotics, intestinal microecology, and disease, in-depth research is still needed, and more large-scale clinical trials are needed to evaluate the efficacy of probiotics in the treatment of disease and the safety of probiotics in the human body. From the above situation, we emphasize that L. johnsonii has broad application prospects in different diseases; however, we also need to consider some of these issues. First of all, since the host specificity of L. johnsonii is only known at the strain level, a question to ponder is whether animal and in vitro experiments can be extrapolated to humans themselves, and deeper mechanisms need to be studied with more human samples. In addition, we found that some researchers in experimental studies used live bacteria, but some researchers used dead bacteria. This may be due to the different culture conditions suitable for different strains, and the inability of some to survive in vitro for long periods of time. Therefore, it is equally important to study the active substances of dead functional probiotics for disease prevention. Indeed, several studies have been conducted on the safety of various strains of L. johnsonii [94,95,96], but some studies have not been conducted on toxicity in animal models, and more strains and further studies should be conducted. In addition to the application of L. johnsonii alone, a study last year added weight to the possible role of probiotics and functional materials in the treatment of disease [97]. Finally, it is worth noting that our summary results showed that not much research has been done on the antibiotic resistance of L. johnsonii, and the mechanisms of its production and transmission have been poorly studied; therefore, more detailed and in-depth studies may be needed.
In conclusion, L. johnsonii still has a bright future in research, especially in the areas of using both living and dead bacteria, as well as combining different biological materials, to treat or prevent disease. Nevertheless, more clinical research is required to pinpoint the precise process in various hosts and convert the findings into practical applications.
Z.Z. performed the literature review and drafted the manuscript. Z.L., L.Z. (Lei Zhang) and G.Z. contributed to the revision and editing of the manuscript. Z.Z., L.Z. (Lanlan Zhao), J.W. and Y.P. collected the literature and reviewed the text. All authors have read and agreed to the published version of the manuscript.
No new data were created or analyzed in this study. Data sharing is not applicable to this article.
The authors declare no conflict of interest.
Footnotes
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Enlarge this image.Figure 1. The common mechanism of L. johnsonii in different diseases. L. johnsonii acts on various parts of the body, including the brain, lungs, liver, stomach, and small intestine, as well as adipose tissue, by modulating immune function, interacting with the intestinal flora, and improving barrier functions. Created with https://www.biorender.com (accessed on 8 March 2023).
Enlarge this image.Figure 2. The role played by L. johnsonii for different gastrointestinal diseases. L. johnsonii is beneficial for H. pylori infection, colitis, Escherichia coli-induced diarrhea, and subclinical necrotizing colitis on farms. Created with https://www.biorender.com (accessed on 8 March 2023).
Enlarge this image.Figure 3. The role played by L. johnsonii through the brain–gut axis. L. johnsonii indirectly prevents hippocampus-related memory dysfunction by affecting normal gut microbes and inhibiting gut inflammatory responses. Created with https://www.biorender.com (accessed on 8 March 2023).
L. johnsonii showed improvement in disease in different animal experiments or clinical studies.
| Strain | Disease | Experimental Models | Duration of Intervention | Treatment Results | Reference |
|---|---|---|---|---|---|
| La1 (NCC533) | AD | Atopic dermatitis NC/Nga mice | From 20 to 22 days of age | IL-8↓, IL-12↓, IL-23↓, CD86↓ | [ |
| N6.2 | T1D | BB-DP rats | Pre-weaning to 1 day old during mother feeding and post-weaning at 21 days old | iNOS↓, IFNγ↓, Cox-2↑, claudin↑, occludin↓ | [ |
| N6.2 | T1D | BB-DP rats | Daily until sacrifice at diabetes onset, or the culmination of the experiment at 140 days | IL-17↑, IL-23↑ | [ |
| N6.2 | — | BB-DP rats | After weaning to 60 days of age | mature caspase-1↓, IL-1β↓ | [ |
| La1 | Hyperglycemia | STZ-induced diabetes animal model and hyperglycemia model induced by intracranial injection of 2DG | 2 weeks | plasma glucose↓, glucagon levels↓ | [ |
| A multi-strain probiotic supplement including L. johnsonii MH-68 | T1D | Patients with T1D | 24 weeks | fasting blood glucose↓, HbA1c↓, IL-8↓, IL-17↓, MIP-1β↓, RANTES↓, TNF-α↓, TGF-β1↑ | [ |
| A multi-strain probiotic supplement including L. johnsonii MH-68 | T2D | STZ -induced diabetes animal model | 8 weeks | TNF-α↓, IL-6↓, IL-1β↓, β-cell mass↑ | [ |
| L. johnsonii | Allergic or infectious airway disease | A similar experimental design as the CRA airway challenge model and RSV infection model | — | IL-4↓, IL-5↓, IL-13↓, IL-17↓, CD11c/CD11b and CD11c/CD8, as well as CD69 activated CD4 and CD8 T cells↓ | [ |
| L. johnsonii | RSV | RSV infection model | 1 week | IL-4↓, IL-5↓, IL-13↓, IL-6↓, IL-1b↓, TNFα↓, IFNβ↑, DHA↑, AcedoPC↑ | [ |
| L. johnsonii | RSV | RSV infection model | — | IL-4↓, IL-5↓, IL-13↓, IL-17↓, Gob5(mucogenic gene mRNA level) ↓Th2↓, IFN-γ↑ | [ |
| La1 | H. pylori-associated gastritis | Healthy adult volunteers of both genders infected by H. pylori | 3 weeks | — | [ |
| La1 | H. pylori-associated gastritis | Healthy adult volunteers of both genders infected by H. pylori | 2 weeks | δ13CO2 over baseline (DOB)↓ | [ |
| La1 | H. pylori infection | Healthy adult volunteers of both genders infected by H. pylori | 2 weeks | — | [ |
| La1 | H. pylori infection | Asymptomatic school children | 4 weeks | — | [ |
| La1 | H. pylori-associated gastritis | H. pylori SS1 strain infection mode in C57BL/6 mice | 3 months | anti-H. pylori IgG antibody titers↓ | [ |
| No. 1088 | H. pylori infection | Male germ-free Balb/c mice | 2 weeks or 4 weeks | — | [ |
| MH-68 | H. pylori infection | SPF SD male rats | 4 weeks | — | [ |
| L. johnsonii | H. pylori-associated gastritis | Healthy adult volunteers of both genders infected by H. pylori | 16 weeks | H. pylori density↓ | [ |
| NJ13 | Enterohaemorrhagic E. coli-induced diarrhoea | Female mice | — | — | [ |
| LJ1 | Enteroinvasive E. coli-induced diarrhea | KM mice | 8-22days | — | [ |
| L. johnsonii | UC | DSS-induced chronic colitis mice model and human sample | — | IL10↑, TLR1/2↑, MRC1↑ | [ |
| La1 (NCC533) | — | Completely enterally fed elderly in-patients aged over 70 years | 12 weeks | serum albumin↑, Blood Hb↑, blood phagocytic activity↑, TNF-α↓ | [ |
| L. johnsonii | Rodentium-Induced colitis | female C57BL/6J mice | 2 weeks | CD4, CD8, CD11b, F4/80, TNF-α, IL-1β, IL-6, IL-17A, ssMCP1, Cox2↓ | [ |
| L. johnsonii + B. thetaiotaomicron | Colitis | DSS-induced chronic colitis mice model | 5 days | IgA↑, IL-1β↓, IL-10↑, TLR9↑, TLR↓, MBL-C↓ | [ |
| BS15 | SNE | Broiler chickens (Cobb 500) | days 1-28 or days 29-42 | CD4↑, CD4/CD8↑, sIgA in ileum↑ | [ |
| BS15 | SNE | Broiler chickens (Cobb 500) | 28days or 42days | SOD↑, CAT↑, IHR↑, T-AOC↑, IgG↑ and IgA↑ in serum, IFN-γ↑, CD3CD4 percentage↑, CD3CD4/CD3CD8↑ | [ |
| BS15 | SNE | Broiler chickens (Cobb 500) | 4 weeks | ALT↓, AST↓, TC↓, HDL-C↑, PPARγ and ATGL↑ in adipose tissue, IGF-1 and EGF↑ in jejunum and ileum, ACC, FAS and SREBP-1c↓ inhepatic expressions, PPARα and CPT-1↑ in hepatic expressions | [ |
| BS15 | SNE | Broiler chickens (Cobb 500) | 6 weeks | HDL-C↑, TG↓, LDL-C↓, SREBP-1c and FAS↓ in hepatic expressions | [ |
| BS15 | SNE induced hepatic inflammation | Broiler chickens (Cobb 500) | 4 weeks | FOS↓ | [ |
| BS15 | Fluoride-induced memory impairment | Male ICR mice | 98 days | BDNF↑, CREB↑, Bcl-xl↑, Bad↓ | [ |
| BS15 | Memory dysfunction Induced by chronic high-fluorine intake | Male ICR mice | 98 days | mRNA levels of Dbn, MAP-2, and SYP↑, T-AOC, and GSH-Px↑ in hippocampuls, sIgA ↓ in the jejunal mucosa, MDA↑, SOD↑, CAT activities↑, GSH↑ | [ |
| BS15 | Memory dysfunction in mice after RS | 5C7BL/6J male mice | 4 weeks | the mRNA expression levels of BDNF, CREB, SCF, c-Fos, and NMDAR↑, DA, 5-HT, and Ach levels↑, the mRNA expression level of IL-4↑, GABA↑, mRNA expression levels of bcl-2 and Bcl-xL↑ | [ |
| BS15 | Psychological stress-induced memory dysfunction | WAS in ICR male mice | 4 weeks | mRNA-expression levels of tight junction proteins claudin-1, occludin, and ZO-1 in the jejunum and ileum↑, TNF-α↓, IFN-γ↓, and IL-1β↓, mRNA levels of BDNF↑, CREB↑ | [ |
| N6.2 and BB | Diet-induced obesity | HFD model | 15 weeks | SREBP-1↓, SCAP↓, LCFA in the serum↑ | [ |
| JNU3402 | Diet-induced obesity | HFD model C57BL/6J mice | 14 weeks | ACOX↑, CPT1↑, PGC1α↑, PPARγ↑, TG↓, FAS↓, ACC↓, SREBP1c↓, hepatic cholesterol level↓ | [ |
| BFE6154 | Diet-induced hypercholesterolemia | HFHCD model C57BL/6J mice | 4 weeks | LDL↓, ABCG8↓, NPC1L1↓, ABCG5↑, HDL↑, LDLR↑ | [ |
| BS15 | NAFLD | HFD model ICR mice | 17 weeks | LPS↓, TG↓, LDLC↓, ALT↓, FFA↓, HDLC↓, UCP-2 and cytochrome c↓ in mitochondria, the hepatic expression of Acc 1, Fas, TNFα and PPARγ↓, the hepatic expression of Fiaf↑ | [ |
2DG: 2-deoxy-D-glucose; ABCG5/8: ATP-binding cassette (ABC) transporters G5 and G8; ACC: acetyl-CoA carboxylase; AcedoPC: 1-docosahexaenoylglycerophosphocholine; ACOX: acetyl-CoA oxidase; AD: atopic dermatitis; ALT: alanine aminotransferase; AST: aspartate transaminase; Bad: Bcl-xL/Bcl-2 associated death promoter; BB: blueberry phytophenols; BB-DP: BioBreeding diabetes-prone; Bcl-xl: B-cell lymphoma-extra large; BDNF: brain-derived neurotrophic factor; CAT: catalase; COX-2: Cyclooxygenase-2; CPT1: carnitine palmitoyltransferase 1; CRA: cockroach allergen; CREB: cAMP response element-binding protein; Dbn: developmentally regulated brain protein; DSS: dextran sulfate sodium; EGF: epidermal growth factor; FOS: proto-oncogene protein; FAS: fatty acid synthase; FFA: free fatty acid; GSH-Px: glutathione peroxidase; Hb: hemoglobin; HbA1c: H glycated hemoglobin; HDL-C: high-density lipoprotein cholesterol; HFD: high-fat diet; HFHCD: high-fat and high-cholesterol diet; IFN-γ: Interferon-gamma; IGF-1: insulin-like growth factors-1; IHR: inhibition of hydroxy radical; iNOS: inducible nitric oxide synthase; LCFA: long chain fatty acids; LDL-C: low-density lipoprotein cholesterol; LDLR: low-density lipoprotein receptor; LPS: lipopolysaccharide; MAP-2: microtubule-associated protein; MCP1: monocyte chemoattractant protein-1; MDA: malondialdehyde; NAFLD: non-alcoholic fatty liver disease; NPC1L1: NiemannPick C1-Like1; PGC1α: peroxisome proliferator-activated receptor gamma coactivator 1-α; PPARγ: Peroxisome proliferator-activated receptor gamma; T1D: Type 1 diabetes; T2D: Type 2 diabetes; T-AOC: total antioxidation capacity; TG: triglyceride; TGF-β1: transforming growth factor-β1; TLR1/2: toll-like receptor1/2; TNF-α: tumor necrosis factor alpha; RS: restraint stress; RSV: respiratory viral infection; SNE: subclinical (mild) necrotic enteritis; SOD: superoxide dismutase; STZ: Streptozotocin; SPF: specific pathogen free; SREBP-1: sterol regulatory element-binding protein 1; SCAP: SREBP cleavage-activating protein; SD: Sprague–Dawley; SYP: synaptophysin; UC: ulcerative colitis; WAS: water-avoidance stress; “↑” and “↓” represent the indicators of increase and decrease in the host after probiotic treatment, respectively.
Supplementary Materials
The following supporting information can be downloaded at:
References
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; Zhang, Lei 3 1 Microbiome-X, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250000, China;
2 Microbiome-X, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250000, China;
3 Microbiome-X, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250000, China;