Indications of Th1 and Th17 responses in cerebrospinal fluid from patients with Lyme neuroborreliosis: a large retrospective study
© Henningsson et al; licensee BioMed Central Ltd. 2011
Received: 6 August 2010
Accepted: 20 April 2011
Published: 20 April 2011
Previous studies indicate that successful resolution of Lyme neuroborreliosis (NB) is associated with a strong T helper (Th) 1-type cytokine response in the cerebrospinal fluid (CSF) followed by a down-regulating Th2 response, whereas the role of the recently discovered Th17 cytokine response is unknown.
To investigate the relative contribution of different Th associated cytokine/chemokine responses, we used a multiple bead array to measure the levels of CXCL10 (Th1 marker), CCL22 (Th2 marker), IL-17 (Th17 marker) and CXCL8 (general inflammation marker), in serum and in CSF from untreated patients with confirmed NB (n = 133), and non-NB patients (n = 96), and related the findings to clinical data. Samples from patients with possible early NB (n = 15) and possible late NB (n = 19) were also analysed, as well as samples from an additional control group with orthopaedic patients (n = 17), where CSF was obtained at spinal anaesthesia.
The most prominent differences across groups were found in the CSF. IL-17 was elevated in CSF in 49% of the patients with confirmed NB, but was not detectable in the other groups. Patients with confirmed NB and possible early NB had significantly higher CSF levels of CXCL10, CCL22 and CXCL8 compared to both the non-NB group and the control group (p < 0.0001 for all comparisons). Patients in the early NB group, showing a short duration of symptoms, had lower CCL22 levels in CSF than did the confirmed NB group (p < 0.0001). Furthermore, patients within the confirmed NB group showing a duration of symptoms <2 weeks, tended to have lower CCL22 levels in CSF than did those with longer symptom duration (p = 0.023). Cytokine/chemokine levels were not correlated with clinical parameters or to levels of anti-Borrelia-antibodies.
Our results support the notion that early NB is dominated by a Th1-type response, eventually accompanied by a Th2 response. Interestingly, IL-17 was increased exclusively in CSF from patients with confirmed NB, suggesting a hitherto unknown role for Th17 in NB. However, for conclusive evidence, future prospective studies are needed.
Neuroborreliosis (NB) is the most common manifestation of disseminated borreliosis in Europe [1, 2]. Most patients recover after antibiotic treatment, while some experience persisting symptoms despite adequate therapy [3–8]. The pathogenic mechanisms behind the variable outcome are not fully understood. Previous studies have indicated that a good prognosis in NB seems to be associated with a strong T helper (Th) 1-type immune response in the cerebrospinal fluid (CSF) early in the infection [9–15], followed by a Th2-type response, capable of suppressing the Th1-type inflammation. If this switching is delayed, there is a risk of tissue damage and persisting symptoms [16–19].
The Th1/Th2 concept has recently been extended to include a population called Th17, based on their secretion of interleukin (IL)-17 . Th17 cells are thought to play a key role in the induction and development of tissue injury in some autoimmune diseases, although so far mainly shown in experimental models [21, 22]. Recent studies have also demonstrated induction of IL-17 preferentially in infections with extra-cellular bacteria and fungi . It has been suggested that Th17 cells and their associated cytokines are involved in the pathogenesis of Lyme arthritis [24–26], whereas data on Th17 involvement in NB is lacking.
Chemokines are small chemotactic cytokines that are induced during an immune response to promote migration of immune cells to the site of infection . Chemokines have a crucial role in establishing the Th1/Th2 balance and they are used as markers for Th1/Th2 immunity. The chemokine CXCL10 (IFN-γ inducible protein 10, IP-10) is secreted by several cell types, e.g. monocytes, endothelial cells and fibroblasts  in response to IFN-γ, and plays an important role in attracting T cells into sites of Th1-type inflammation . Previous studies have indicated the presence of CXCL10 in CSF from NB patients  as well as in skin samples from patients with dermatoborreliosis . The Th2-associated chemokine CCL22 (macrophage-derived chemokine, MDC) is secreted by dendritic cells and macrophages , and is a chemoattractant for monocytes, immature dendritic cells and natural killer cells . CXCL8 (IL-8) is secreted by several cell types, e.g. macrophages, dendritic cells and endothelial cells [34, 35]. Its primary function is to recruit neutrophil granulocytes early in the inflammation process , and CXCL8 can therefore be regarded as a general and early marker of inflammation. Furthermore, CXCL8 is probably the most important neutrophil-attracting factor induced by IL-17 .
The aim of this study was to assess Th associated cytokine/chemokine profiles in serum and in CSF in NB patients in the framework of a large retrospective study. The relative contribution of Th1-, Th2-, and Th17-like responses were estimated by the levels of CXCL10, CCL22 and IL-17A (here referred to as IL-17), respectively. CXCL8 was analyzed as a general marker of inflammation. In addition, we also wanted to relate the cytokine/chemokine levels to age, sex, clinical presentation and course of the disease.
Characteristics of the different study groups.
n = 133
Possible late NB
n = 19
Possible early NB
n = 15
n = 96
n = 17
Borrelia-specific AI or
bodies in CSF
S-albumin median, (range)
antibodies detected in
serum; n, (%)
Median duration of
symptoms before LP;
Cranial nerve palsy
Serum and CSF samples
The Clinical Laboratory of Microbiology (CLM) in Kalmar used an ELISA kit measuring intrathecal production of Borrelia-specific antibodies, i.e. AI, (IDEIA Lyme Neuroborreliosis, K6028, Dako Cytomation, UK). Results were interpreted as negative or positive according to the manufacturer's instructions. Serum samples from patients in Kalmar County were investigated with Immunetics Quick ELISA Borrelia C6 Assay kit, Immunetics, Cambridge, MA, USA.
At the CLM in Jönköping the Lyme Borreliosis ELISA kit 2nd Generation (Dako Cytomation, A/S, Glostrup, Denmark) was used for measuring Borrelia-specific antibodies in serum and in CSF. Results were interpreted as positive or negative according to a cut-off adjusted to a local sample collection used when validating the method.
The control samples (group 5) were analysed for Borrelia-specific antibodies by ELISA kit measuring serum and intrathecal production of antibodies (IDEIA Lyme Neuroborreliosis, K6028, Dako Cytomation, UK).
All samples had been stored at -20°C and thawed once before the current analyses. The cytokine/chemokine and albumin analyses were performed in 2009 using Luminex technology (see below) and rate nephelometry (Beckman Coulter Immage 800), respectively.
Concentrations were measured by Luminex multiple bead technology (Milliplex Human Cytokine/Chemokine Kit, Millipore Corporation) according to the instructions provided by the manufacturer. The lower detection limits were as follows; CXCL8: 1.6 pg/mL, IL-17: 1.6 pg/mL, CXCL10: 16 pg/mL, CCL22: 80 pg/mL in serum, 20 pg/mL in CSF. Values under the detection limit were given half the value of the lowest point of the standard curve. The inter-assay coefficient of variation (CV) was 9.3-11.6%, and the intra-assay CV was 4.5-7.1% according to the manufacturer. In the following, CXCL8, CXCL10 and CCL22 are collectively referred to as chemokines; IL-17 is referred to as cytokine, whereas all (CXCL8, CXCL10, CCL22 and IL-17) are referred to as cytokine/chemokines.
Data handling and statistics
Statistical analyses were performed using SPSS for Windows, version 15.0. Since most of the variables had skewed distributions, non-parametric tests were used. Kruskal-Wallis ANOVA was performed to compare multiple study groups, and Mann-Whitney U test was applied as a post-hoc test. For ordered categorical variables, the Chi2 test was used. Correlations between parameters were calculated using Spearman correlation analysis (rho values are given). P-values < 0.01 were considered to be significant, this p-value was chosen to avoid mass-significance problems. By analogy to the IgG-index used for calculations of intrathecal IgG production , we calculated a "chemokine intrathecal production index" using the formula (CSF-chemokine/S-chemokine)/(CSF-albumin/S-albumin). The CCL22 index was multiplied by 100 due to the much higher concentration in serum. IL-17 was not detectable in CSF in three of the four patient groups, and thus no data are given for the IL-17 intrathecal production index. Albumin values were not available in all samples from the control group (group 5).
The study was approved by the Regional Ethical Review Board in Linköping, Sweden.
There were no differences in cytokine/chemokine levels in serum or in CSF between men and women. When comparing the patients under 15 years of age to patients over 15 in the entire study population (groups 1-5), the children had significantly higher CSF levels of CXCL8 (p < 0.0001), CXCL10 (p < 0.0001), CCL22 (p = 0.0001) and IL-17 (p = 0.001). In serum, there were no differences in cytokine/chemokine levels between younger or older patients, except for CCL22 that was higher in the patients under 15 years of age (p < 0.0001).
In contrast to serum, CSF showed several significant differences across the groups. Groups 1 and 3, i.e. confirmed NB and possible early NB, showed increased levels of CXCL8 (Figure 1b) and CXCL10 (Figure 1f) as compared to the other groups. For CCL22, the highest levels were found in group 1, but CCL22 was also elevated in group 3. Thus, regarding the kinetics of CCL22, moderate levels of CCL22 were associated with short symptom duration since group 3, with the shortest symptom duration (p < 0.0001 when compared to group 1), showed lower CCL22 levels than group 1. In addition, patients within the confirmed NB group showing a duration of symptoms <2 weeks, also tended to have lower CCL22 CSF levels than did those with a longer symptom duration (p = 0.023). Notably, IL-17 levels were significantly higher in group 1, confirmed NB, while it was not detectable in CSF of the other groups (Figure 1d).
CSF-albumin/S-albumin ratios and chemokine intrathecal production indices for the different patient groups¤.
n = 133
Possible late NB
n = 19
Possible early NB
n = 15
n = 96
Group 1, the confirmed NB group, showed significantly higher CSF levels of all cytokine/chemokines compared with groups 4, the non-NB group, and 5, the control group (Figure 1). However, regarding clinical parameters, there were no correlations within group 1 between cytokine/chemokine levels in CSF and either i) age, ii) duration of symptoms prior to diagnosis, iii) degree of pleocytosis in CSF, iv) intrathecal Borrelia-specific antibodies, or v) duration of symptoms after treatment (data not shown). Group 1 also showed increased CSF levels of IL-17, being detected (i.e. >0.80 pg/mL) in 65 patients (49%), whereas IL-17 was not detected in CSF of the other groups. However, there were no significant differences between patients with elevated IL-17 levels in CSF and the remaining group 1 patients regarding age, sex, duration of symptoms prior to diagnosis or duration of symptoms after treatment.
Clinical features of patients with confirmed neuroborreliosis, stratified into two groups depending on the IL-17 level in cerebrospinal fluid.
IL-17 in CSF
n = 68
IL-17 in CSF
n = 65
median number of cells/μL, (range)
S-albumin median, (range)
Median duration of
symptoms before LP
Cranial nerve palsy
Muscle and joint pain
Group 2, possible late NB, did not differ from the non-NB group or the control group in their serum or CSF levels regarding cytokine/chemokine levels or intrathecal indices, except for higher serum levels of CXCL10 in the control group (Figure 1e).
Characteristics of the children under 15 years of age¤
n = 59
Possible early NB
n = 15
n = 21
Borrelia-specific AI or
bodies in CSF
S-albumin median, (range)
Median duration of
symptoms before LP;
In this study we aimed at elucidating the balance of cytokine/chemokines related to different Th cell populations including the recently described Th17 population. For this purpose, a large material of collected serum and CSF samples from patients with clinically suspected NB was used. The age and sex distribution were in accordance with a previous study from the areas around Kalmar and Jönköping , supporting that the study population is representative for NB patients. The patients were stratified according to the primary findings in the CSF. One large group (group 1) was regarded as "confirmed NB" since these patients showed both CSF pleocytosis and presence of intrathecal anti-Borrelia antibodies . The patients in group 2 had Borrelia-specific antibodies in CSF, but no pleocytosis. They had slightly longer duration of symptoms prior to diagnosis compared to group 1, so in their case it is possible that a previous pleocytosis had resolved by the time of the LP, probably reflecting the natural course of NB in most cases, even without treatment. Taking this into consideration, group 2 could be regarded as patients with "possible late NB", although a number of cases could well have been "status post" NB, and thus, we could not draw any firm conclusions from this group. The patients in group 3 were all children showing CSF pleocytosis but no detectable Borrelia-specific antibodies in CSF. They had a significantly shorter duration of symptoms prior to the LP compared to group 1. Their clinical symptoms were strongly indicative of NB; in all cases subacute meningitis and/or facial palsy, a symptom that in Scandinavia is commonly caused by Borrelia in paediatric patients [40, 41]. These patients were therefore regarded as "possible early NB". In further support of this notion, we previously demonstrated that a similar group of children with "possible NB" revealed Borrelia-specific T-cell responses to the same extent as did children with "confirmed NB" . Another large group (group 4, the non-NB group) could be regarded as a kind of control group, since these patients had no signs of CNS inflammation and no intrathecal Borrelia-specific antibodies. Group 4 consisted of patients investigated for symptoms suggestive of NB, but without serologic findings of current NB. A significantly larger proportion of the patients in groups 1, 2 and 3 had detectable Borrelia-specific antibodies in serum compared to the patients in group 4. However, the presence or absence of anti-Borrelia antibodies in serum should be interpreted with caution, since the study is carried out in a highly endemic area where patients could have been exposed to Borrelia previously. Further, NB patients may develop anti-Borrelia antibodies in CSF before the antibodies are detectable in serum . Group 5 consisted of patients without a medical history of NB and no current symptoms suggestive of NB. They did not have CSF pleocytosis or detectable Borrelia-specific antibodies in serum or in CSF, and were therefore included as an additional and independent control group.
The most prominent differences across groups were found in CSF. CXCL8 and CXCL10 were significantly elevated in group 1 (confirmed NB) and in group 3 (possible early NB). CCL22 in CSF was particularly elevated in group 1, and moderately elevated in group 3. Here, the time aspect is probably of importance for the chemokine profile. Early in the inflammation process, a Th1-type immune response dominates (as in group 3, possible early NB), but is then counter-balanced by a Th2 response (as in group 1, confirmed NB). This pattern is also found within group 1, i.e. patients with duration of symptoms <2 weeks also tended to have lower CCL22 CSF levels than those with longer symptom duration. This scenario corroborates previous observations and is in line with the hypothesis that Th2 controls the primary Th1 response, the latter being crucial in bacteria elimination but also potentially involved in tissue damage [12–19].
Remarkably, half of the patients in group 1 had elevated levels of IL-17 in CSF, whereas IL-17 was not detectable in any of the other patient groups. The role of the increase in IL-17 is still puzzling since there were no significant differences between those with high levels of IL-17 in CSF and those with low levels regarding sex, age, duration of symptoms prior to diagnosis, or duration of symptoms after treatment. The significant findings distinguishing patients with high levels of CSF-IL-17 from those with low levels, were a more pronounced pleocytosis, slightly more elevated CXCL10 in CSF and a higher frequency of fatigue. These findings are hard to interpret and need to be confirmed. The association with pleocytosis suggests IL-17 to be associated with ongoing inflammation, although the absence of IL-17 in children with pleocytosis but no anti-Borrelia-antibodies in CSF (group 3) is then puzzling. However, it could be speculated that children show defective or delayed Th17 responses. The presence of IL-17 in CSF of NB patients has only recently been reported in another cohort of NB patients on the Islands of Åland . Since IL-17 has proven important in the context of extra-cellular bacteria, and in the induction of immune-mediated tissue injury , further studies on IL-17 and its role in the pathogenesis and clinical out-come of NB are required.
CXCL8 is one important effector mechanism associated with IL-17, which is in line with the high CXCL8 levels in group 1. However, also the patients in group 3 (possible early NB) showed high levels of CXCL8 in CSF, but no detectable IL-17, which suggests that CXCL8 might be induced by other pathways independent of IL-17.
We found several evidence supporting an intrathecal origin of the induced cytokine/chemokines; no correlations between serum and CSF levels, the levels being of the same magnitude (or higher) in CSF compared to serum for CXCL8, CXCL10 and IL-17, and increased chemokine intrathecal production indices for CXCL8, CXCL10 and CCL22 in groups 1 and 3. For IL-17, an intrathecal production index could not be reliably calculated due to the absence of IL-17 in CSF of several groups. Yet, it seems that IL-17 is produced intrathecally since neither the serum levels of IL-17 nor the CSF-albumin/S-albumin ratios correlated with the CSF levels of IL-17.
As to findings in serum, the patients with confirmed NB showed significantly higher levels of CXCL10 as compared to groups 2 and 4, possibly reflecting that the strong Th1 response in the CNS also is associated with a systemic response. However, the orthopaedic control patients also displayed elevated CXCL10 levels in serum. It could be speculated that this finding might be related to age . Surprisingly, children with possible early NB (group 3) showed significantly lower levels of CXCL8 in serum, and this finding persisted in the comparison across groups 1, 3 and 4 when all adult patients were excluded. Otherwise, no significant differences were found across groups for cytokine/chemokine levels in serum, confirming that the inflammatory process is mainly restricted to the CNS compartment .
We also attempted to find correlations between cytokine/chemokine levels and clinical parameters including the course of disease. However, no such correlations were found, which implies that cytokine/chemokine levels do not seem to be useful clinical predictors of the disease course. However, we can not exclude that such correlations would have been revealed if a standardized follow-up protocol had been applied in a prospective manner.
One limitation to this study is the difficulty to find an appropriate control group. The use of completely healthy control patients with no symptoms and no other disorders would of course be desirable, but it is generally very difficult to obtain CSF samples from healthy volunteers. Importantly, we included a control group (group 5) where CSF was not obtained due to suspicion of NB. We also believe that our non-NB group (group 4) is quite useful, since the patients have neither signs of ongoing Borrelia infection, nor any signs of CNS inflammation, and it is our opinion that the inflammation in NB is mainly restricted to the CNS compartment. Furthermore, there were no significant differences found between the non-NB group and the control group (group 5), except for higher serum levels of CXCL10 in the control group as discussed above. Another possible limitation to this study is the difference in age between patients in group 3 (children with possible early NB) and patients in the other groups. However, when comparing group 3 to the children in groups 1 and 4, we obtained the same results as when including the adults in the analysis.
The samples had been stored at -20°C and thawed once before. However, chemokines are fairly robust, and concentrations were measurable using the methods described here. Furthermore, all samples had been handled and stored under the same conditions. It is also worth noting that we here measured the concentrations of circulating cytokine/chemokines, and the results could be different at a cellular level. However, CXCL10 and CCL22 seem to roughly reflect previous data on Th1 and Th2 [9–15].
Our results support the notion that a Th1-type immune response dominates in the CNS in early NB, and is then followed by a Th2-type immune response. We suggest that chemokines are suitable and feasible markers for measuring of Th1/Th2 responses. We also show that IL-17 levels are increased in CSF in a substantial proportion of NB cases, suggesting a role for Th17 in NB. However, the precise role of Th17 in NB pathogenesis and clinical course remains to be evaluated.
The study was approved by the Regional Ethical Review Board in Linköping, Sweden. A copy of the written approval is available for review by the Editor-in-Chief of this journal. The patients had given a general consent to their samples being stored in a biobank and used for research purposes.
This work was supported by grants from Futurum Academy of Health-care, Jönköping County Council, The Medical Research Council in the South-east of Sweden (FORSS), and The Swedish Society of Medicine in Linköping. The authors would like to thank PhD Anna Lundberg and MSc Petra Cassel for help with the Luminex assay, PhD Mats Nilsson and associate professor Maria Jenmalm for valuable discussions.
- Berglund J, Eitrem R, Ornstein K, Lindberg A, Ringér A, Elmrud H, Carlsson M, Runehagen A, Svanborg C, Norrby R: An epidemiologic study of Lyme disease in southern Sweden. N Engl J Med. 1995, 333: 1319-27. 10.1056/NEJM199511163332004.View ArticlePubMedGoogle Scholar
- Cimmino MA: Relative frequency of Lyme borreliosis and of its clinical manifestations in Europe. European Community Concerted Action on Risk Assessment in Lyme Borreliosis. Infection. 1998, 26: 298-300. 10.1007/BF02962251.View ArticlePubMedGoogle Scholar
- Oschmann P, Dorndorf W, Hornig C, Schäfer C, Wellensiek HJ, Pflughaupt KW: Stages and syndromes of neuroborreliosis. J Neurol. 1998, 245: 262-72. 10.1007/s004150050216.View ArticlePubMedGoogle Scholar
- Kaiser R: Neuroborreliosis. J Neurol. 1998, 245: 247-55. 10.1007/s004150050214.View ArticlePubMedGoogle Scholar
- Weber K: Aspects of Lyme borreliosis in Europe. Eur J Clin Microbiol Infect Dis. 2001, 20: 6-13.PubMedGoogle Scholar
- Berglund J, Stjernberg L, Ornstein K, Tykesson-Joelsson K, Walter H: 5-year follow-up study of patients with neuroborreliosis. Scand J Infect Dis. 2002, 34: 421-5. 10.1080/00365540110080421.View ArticlePubMedGoogle Scholar
- Vrethem M, Hellblom L, Widlund M, Ahl M, Danielsson O, Ernerudh J, Forsberg P: Chronic symptoms are common in patients with neuroborreliosis - a questionnaire follow-up study. Acta Neurol Scand. 2002, 106: 205-8. 10.1034/j.1600-0404.2002.01358.x.View ArticlePubMedGoogle Scholar
- Tjernberg I, Carlsson M, Ernerudh J, Eliasson I, Forsberg P: Mapping of hormones and cortisol responses in patients after Lyme neuroborreliosis. BMC Infect Dis. 2010, 10: 20-10.1186/1471-2334-10-20.PubMed CentralView ArticlePubMedGoogle Scholar
- Forsberg P, Ernerudh J, Ekerfelt C, Roberg M, Vrethem M, Bergström S: The outer surface proteins of Lyme disease Borrelia spirochetes stimulate T cells to secrete interferon-gamma (IFN-γ): diagnostic and pathogenic implications. Clin Exp Immunol. 1995, 101: 453-60.PubMed CentralView ArticlePubMedGoogle Scholar
- Widhe M, Grusell M, Ekerfelt C, Vrethem M, Forsberg P, Ernerudh J: Cytokines in Lyme Borreliosis: lack of early tumor necrosis factor-alpha and transforming growth factor-beta 1 responses are associated with chronic neuroborreliosis. Immunology. 2002, 107: 46-55. 10.1046/j.1365-2567.2002.01500.x.PubMed CentralView ArticlePubMedGoogle Scholar
- Sjöwall J, Carlsson A, Vaarala O, Bergström S, Ernerudh J, Forsberg P, Ekerfelt C: Innate immune responses in Lyme borreliosis: enhanced tumor necrosis factor-alpha and interleukin-12 in asymptomatic individuals in response to live spirochetes. Clin Exp Immunol. 2005, 141: 89-98. 10.1111/j.1365-2249.2005.02820.x.PubMed CentralView ArticlePubMedGoogle Scholar
- Oksi J, Savolainen J, Pène J, Bòusquet J, Laippala P, Viljanen MK: Decreased interleukin-4 and increased gamma interferon production by peripheral blood mononuclear cells of patients with Lyme borreliosis. Infect Immun. 1996, 64: 3620-3.PubMed CentralPubMedGoogle Scholar
- Ekerfelt C, Ernerudh J, Bunikis J, Vrethem M, Aagesen J, Roberg M, Bergström S, Forsberg P: Compartmentalization of antigen specific cytokine responses to the central nervous system in CNS borreliosis: secretion of IFN-gamma predominates over IL-4 secretion in response to outer surface proteins of Lyme disease Borrelia spirochetes. J Neuroimmunol. 1997, 79: 155-62. 10.1016/S0165-5728(97)00118-5.View ArticlePubMedGoogle Scholar
- Widhe M, Ekerfelt C, Forsberg P, Bergström S, Ernerudh J: IgG subclasses in Lyme borreliosis: a study of specific IgG subclass distribution in an interferon-gamma-predominated disease. Scand J Immunol. 1998, 47: 575-81.PubMedGoogle Scholar
- Ekerfelt C, Jarefors S, Tynngård N, Hedlund M, Sander B, Bergström S, Forsberg P, Ernerudh J: Phenotypes indicating cytolytic properties of Borrelia-specific interferon-gamma secreting cells in chronic Lyme borreliosis. J Neuroimmunol. 2003, 145: 115-26. 10.1016/j.jneuroim.2003.08.037.View ArticlePubMedGoogle Scholar
- Kang I, Barthold SW, Persing DH, Bockenstedt LK: T-helper-cell cytokines in the early evolution of murine Lyme arthritis. Infect Immun. 1997, 65: 3107-11.PubMed CentralPubMedGoogle Scholar
- Yin Z, Braun J, Neure L, Wu P, Eggens U, Krause A, Kamradt T, Sieper J: T cell cytokine pattern in the joints of patients with Lyme arthritis and its regulation by cytokines and anticytokines. Arthritis Rheum. 1997, 40: 69-79. 10.1002/art.1780400111.View ArticlePubMedGoogle Scholar
- Widhe M, Jarefors S, Ekerfelt C, Vrethem M, Bergstrom S, Forsberg P, Ernerudh J: Borrelia-specific interferon-gamma and interleukin-4 secretion in cerebrospinal fluid and blood during Lyme borreliosis in humans: association with clinical outcome. J Infect Dis. 2004, 189: 1881-91. 10.1086/382893.View ArticlePubMedGoogle Scholar
- Jarefors S, Janefjord CK, Forsberg P, Jenmalm MC, Ekerfelt C: Decreased up-regulation of the interleukin-12R beta 2-chain and interferon-gamma secretion and increased number of forkhead box P3-expressing cells in patients with a history of chronic Lyme borreliosis compared with asymptomatic Borrelia-exposed individuals. Clin Exp Immunol. 2007, 147: 18-27.PubMed CentralPubMedGoogle Scholar
- Harrington LE, Mangan PR, Weaver CT: Expanding the effector CD4 T cell repertoire: the Th17 lineage. Curr Opin Immunol. 2006, 18: 349-56. 10.1016/j.coi.2006.03.017.View ArticlePubMedGoogle Scholar
- Stockinger B, Veldhoen M: Differentiation and function of the Th17 cells. Curr Opin Immunol. 2007, 19: 281-6. 10.1016/j.coi.2007.04.005.View ArticlePubMedGoogle Scholar
- Steinman L: A brief history of T(H)17, the first major revision in the T(H)1/T(H)2 hypothesis of T cell-mediated tissue damage. Nat Med. 2007, 13: 139-45. 10.1038/nm1551.View ArticlePubMedGoogle Scholar
- Sallustro F, Lanzavecchia A: Human Th17 cells in infection and autoimmunity. Microbes Infect. 2009, 11: 620-4. 10.1016/j.micinf.2009.04.004.View ArticleGoogle Scholar
- Burchill MA, Nardelli DT, England DM, DeCoster DJ, Christopherson JA, Callister SM, Schell RF: Inhibition of interleukin-17 prevents the development of arthritis in vaccinated mice challenged with Borrelia burgdorferi. Infect Immun. 2003, 71: 3437-42. 10.1128/IAI.71.6.3437-3442.2003.PubMed CentralView ArticlePubMedGoogle Scholar
- Kotloski NJ, Nardelli DT, Peterson SH, Torrealba JR, Warner TF, Callister SM, Schell RF: Interleukin-23 is required for development of arthritis in mice vaccinated and challenged with Borrelia species. Clin Vaccine Immunol. 2008, 15: 1199-1207. 10.1128/CVI.00129-08.PubMed CentralView ArticlePubMedGoogle Scholar
- Codolo G, Amedei A, Steere AC, Papinutto E, Cappon A, Polenghi A, Benagiano M, Paccani SR, Sambri V, Del Prete G, Baldari CT, Zanotti G, Montecucco C, D'Elios MM, de Bernard M: Borrelia burgdorferi NapA-driven Th17 cell inflammation in Lyme arthritis. Arthrit Rheum. 2008, 58: 3609-17. 10.1002/art.23972.View ArticleGoogle Scholar
- Murdoch C, Finn A: Chemokine receptors and their role in inflammation and infectious diseases. Blood. 2000, 95: 3032-43.PubMedGoogle Scholar
- Luster AD, Ravtech JV: Biochemical characterization of a gamma interferon-inducible cytokine (IP-10). J Exp Med. 1987, 166: 1084-97. 10.1084/jem.166.4.1084.View ArticlePubMedGoogle Scholar
- Dufour JH, Dziejman M, Liu MT, Leung JH, Lane TE, Luster AD: IFN-γ-inducible protein 10 (IP-10; CXCL10)-deficient mice reveal a role for IP-10 in effector T cell generation and trafficking. J Immun. 2002, 168: 3195-3204.View ArticlePubMedGoogle Scholar
- Lepej SZ, Rode OD, Jeren T, Vince A, Remenar A, Barsić B: Increased expression of CXCR3 and CCR5 on memory CD4+ T-cells migrating into the cerebrospinal fluid of patients with neuroborreliosis: the role of CXCL10 and CXCL11. J Neuroimmunol. 2005, 163 (1-2): 128-34. 10.1016/j.jneuroim.2005.03.005.View ArticlePubMedGoogle Scholar
- Muellegger RR, Means TK, Shin JJ, Lee M, Jones KL, Glickstein LJ, Luster AD, Steere AC: Chemokine signatures in the skin disorders of Lyme Borreliosis in Europe: Predominance of CXCL9 and CXCL10 in erythema migrans and acrodermatitis and CXCL13 in lymphocytoma. Infect Immun. 2007, 75 (9): 4621-8. 10.1128/IAI.00263-07.View ArticleGoogle Scholar
- Vulcano M, Albanesi C, Stoppacciaro A, Bagnati R, D'Amico G, Struyf S, Transidico P, Bonecchi R, Del Prete A, Allavena P, Ruco LP, Chiabrando C, Girolomoni G, Mantovani A, Sozzani S: Dendritic cells as a major source of macrophage-derived chemokine/CCL22 in vitro and in vivo. Eur J Immunol. 2001, 31: 812-22. 10.1002/1521-4141(200103)31:3<812::AID-IMMU812>3.0.CO;2-L.View ArticlePubMedGoogle Scholar
- Godiska R, Chantry D, Raport CJ, Sozzani S, Allavena P, Leviten D, Mantovani A, Gray PW: Human macrophage-derived chemokine (MDC), a novel chemoattractant for monocytes, monocyte-derived dendritic cells, and natural killer cells. J Exp Med. 1997, 185: 1595-604. 10.1084/jem.185.9.1595.PubMed CentralView ArticlePubMedGoogle Scholar
- Janeway CA, Travers P, Walport M, Shlomchik MJ: Immunobiology. 2005, Garland Science PublishingGoogle Scholar
- Utgaard JO, Jahnsen FL, Bakka A, Brandtzaeg P, Haraldsen G: Rapid secretion of prestored interleukin 8 from Weibel-Palade bodies of microvascular endothelial cells. J Exp Med. 1998, 188 (9): 1751-1756. 10.1084/jem.188.9.1751.PubMed CentralView ArticlePubMedGoogle Scholar
- Kobayashi Y: The role of chemokines in neutrophil biology. Front Biosci. 2008, 13: 2400-7. 10.2741/2853.View ArticlePubMedGoogle Scholar
- Gaffen SL: An overview of IL-17 function and signalling. Cytokine. 2008, 43: 402-7. 10.1016/j.cyto.2008.07.017.PubMed CentralView ArticlePubMedGoogle Scholar
- Tibbling G, Link H, Öhman S: Principles of albumin and IgG analyses in neurologic disorders. I. Establishment of reference values. Scand J Clin Lab Invest. 1977, 37: 385-90.View ArticlePubMedGoogle Scholar
- Mygland A, Ljostad U, Fingerle V, Rupprecht T, Schmutzhard E, Steiner I: EFNS guidelines on the diagnosis and management of European Lyme neuroborreliosis. Eur J Neurol. 2010, 17 (1): 8-16. 10.1111/j.1468-1331.2009.02862.x.View ArticlePubMedGoogle Scholar
- Peltomaa M, Saxen H, Seppala I, Viljanen M, Pyykkö I: Paediatric facial paralysis caused by Lyme borreliosis: a prospective and retrospective analysis. Scand J Infect Dis. 1998, 30: 269-75. 10.1080/00365549850160927.View ArticlePubMedGoogle Scholar
- Tveitnes D, Oymar K, Natas O: Acute facial nerve palsy in children: how often is it Lyme borreliosis?. Scand J Infect Dis. 2007, 39: 425-31. 10.1080/00365540601105764.View ArticlePubMedGoogle Scholar
- Widhe M, Skogman BH, Jarefors S, Eknefelt M, Eneström G, Nordwall M, Ekerfelt C, Croner S, Bergström S, Forsberg P, Ernerudh J: Up-regulation of Borrelia-specific IL-4- and IFN-gamma-secreting cells in cerebrospinal fluid from children with Lyme neuroborreliosis. Int Immunol. 2005, 17 (10): 1283-91. 10.1093/intimm/dxh304.View ArticlePubMedGoogle Scholar
- Henningsson AJ, Malmvall BE, Ernerudh J, Matussek A, Forsberg P: Neuroborreliosis - an epidemiological, clinical and healthcare cost study from an endemic area in the south-east of Sweden. Clin Microbiol Infect. 2010, 16 (8): 1245-51.View ArticlePubMedGoogle Scholar
- Nordberg M, Forsberg P, Johansson A, Nyman D, Jansson C, Ernerudh J, Ekerfelt C: Cytotoxic mechanisms may play a role in the local immune response in the central nervous system in neuroborreliosis. J Neuroimmunol. 2011, 232 (1-2): 186-93. 10.1016/j.jneuroim.2010.09.028.View ArticlePubMedGoogle Scholar
- Awasthi A, Kuchroo VK: Th17 cells: from precursors to players in inflammation and infection. Int Immunol. 2009, 21 (5): 489-98. 10.1093/intimm/dxp021.PubMed CentralView ArticlePubMedGoogle Scholar
- Antonelli A, Rotondi M, Fallahi P, Ferrari SM, Paolicchi A, Romagnani P, Serio M, Ferrannini E: Increase of CXC chemokine CXCL10 and CC chemokine CCL2 serum levels in normal ageing. Cytokine. 2006, 34 (1-2): 32-8. 10.1016/j.cyto.2006.03.012.View ArticlePubMedGoogle Scholar
This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.