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1.
Ned Tijdschr Geneeskd ; 1642020 05 25.
Artículo en Holandés | MEDLINE | ID: mdl-32749799

RESUMEN

A 55-year-old man was evaluated at the outpatient rheumatology clinic with painful shins since 6 weeks. He also had a maculopapular rash on his trunk. Bone scintigraphy showed bilateral tibia periostitis. Serologic testing for syphilis was positive matching active infection. The diagnosis secondary syphilis with bilateral tibia periostitis was made.


Asunto(s)
Periostitis/diagnóstico , Sífilis/diagnóstico , Diagnóstico Diferencial , Humanos , Masculino , Persona de Mediana Edad , Periostitis/microbiología , Sífilis/complicaciones , Serodiagnóstico de la Sífilis , Tibia/microbiología
2.
Pediatrics ; 144(4)2019 10.
Artículo en Inglés | MEDLINE | ID: mdl-31537633

RESUMEN

Congenital syphilis (CS) is a preventable infection, yet the incidence has surged to the highest rates in 20 years. Because 50% of live-born infants with CS are asymptomatic at birth, there is an increasing likelihood that pediatric providers will encounter older infants whose diagnoses were missed at birth, emphasizing the importance of timely prenatal screening and treatment. We present one such case of an infant admitted twice at 3 and 4 months of age with long bone fractures and suspected nonaccidental trauma. On her second presentation, several additional symptoms prompted evaluation for and eventual diagnosis of CS. In this case, it is demonstrated that an isolated long bone fracture can be a first presentation of CS, with other classic findings possibly appearing later. Pediatric providers should be familiar with the varied presentations of CS in older children, including the radiographic findings that we describe. The rising rates of CS reveal deficiencies in our current strategy to prevent CS and, thus, we recommend reconsideration of universal syphilis screening in the third trimester and at delivery, with timely treatment to prevent CS during pregnancy.


Asunto(s)
Sífilis Congénita/diagnóstico , Antibacterianos/uso terapéutico , Maltrato a los Niños/diagnóstico , Diagnóstico Diferencial , Errores Diagnósticos , Femenino , Fracturas Espontáneas/etiología , Humanos , Fracturas del Húmero/etiología , Lactante , Penicilina G/uso terapéutico , Periostitis/microbiología , Úlcera Cutánea/microbiología , Sífilis Congénita/tratamiento farmacológico , Transaminasas/sangre
3.
Reumatol Clin (Engl Ed) ; 15(4): 242-245, 2019.
Artículo en Inglés, Español | MEDLINE | ID: mdl-28583783

RESUMEN

We herein describe two cases of secondary syphilis in patients with human immunodeficiency virus (HIV) infection with an unusual presentation, a diffuse polyostotic periosteitis. Patients referred mainly intense bone pain. Other relevant aspects of the clinical pictures were flexor tenosynovitis and hepatic abnormalities. Given the persistence of symptoms, the treatment duration performed was different from most described in literature. However, although more slowly than expected, both obtained a favorable clinical response after treatment with benzathine penicillin G.


Asunto(s)
Hepatopatías/microbiología , Periostitis/microbiología , Sífilis/complicaciones , Sífilis/diagnóstico , Tenosinovitis/microbiología , Adulto , Humanos , Masculino , Persona de Mediana Edad
4.
Clin Nucl Med ; 43(10): e366-e367, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-30036251

RESUMEN

A 39-year-old man presented with severe bone pain in the tibiae and forearms in the wake of a poststreptococcal sepsis complicated with pneumonia and erysipelas 4 months earlier. Bone scintigraphy was indicative of periostitis of the tibia, ulna, and radius bilaterally, and in combination with the increased inflammatory parameters and dysproteinemia, the diagnosis of Goldbloom syndrome was made. Goldbloom syndrome is an idiopathic periosteal hyperostosis associated with dysproteinemia and elevated inflammatory parameters. Although it has only been described in children/adolescents, this case illustrates that, in the specific clinical and biochemical setting, it should also be considered in adults.


Asunto(s)
Huesos/diagnóstico por imagen , Periostitis/sangre , Periostitis/microbiología , Streptococcus/fisiología , Adulto , Humanos , Masculino , Periostitis/complicaciones , Periostitis/diagnóstico por imagen , Cintigrafía
5.
Clin Exp Rheumatol ; 35(3): 516-517, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28339360

RESUMEN

OBJECTIVES: In 1966, Goldbloom et al. described two children who developed a peculiar clinical picture characterized by intermittent daily bone pain in the lower limbs, fever spikes, increased acute phase reactants and dysproteinaemia. The syndrome occurred two weeks after a group A ß-haemolytic streptococcus infection. So far, only a few cases have been reported in the medical literature in English. METHODS: We report two further cases of Goldbloom's syndrome with a review of the literature in English. RESULTS: Our two patients lived in the same Italian region and presented their syndrome onset a week apart. Early use of STIR MRI revealed an atypical metaphyseal hyperintensity in the femurs and tibias. X-ray showed periosteal hyperostosis. A short cycle of corticosteroids led to rapid recovery of symptoms and disappearance of bone changes. CONCLUSIONS: The reported cases highlight a likely under-recognised post-streptococcal inflammatory periosteal reaction and emphasise the diagnostic utility of the newer imaging modalities.


Asunto(s)
Fémur/diagnóstico por imagen , Hipergammaglobulinemia/sangre , Hipoalbuminemia/sangre , Imagen por Resonancia Magnética , Periostitis/diagnóstico por imagen , Infecciones Estreptocócicas/complicaciones , Tibia/diagnóstico por imagen , Corticoesteroides/uso terapéutico , Biomarcadores/sangre , Niño , Diagnóstico Precoz , Femenino , Fémur/microbiología , Humanos , Hipergammaglobulinemia/diagnóstico , Hipergammaglobulinemia/tratamiento farmacológico , Hipergammaglobulinemia/microbiología , Hipoalbuminemia/diagnóstico , Hipoalbuminemia/tratamiento farmacológico , Hipoalbuminemia/microbiología , Periostitis/tratamiento farmacológico , Periostitis/microbiología , Valor Predictivo de las Pruebas , Prednisona/uso terapéutico , Infecciones Estreptocócicas/diagnóstico , Infecciones Estreptocócicas/microbiología , Síndrome , Tibia/microbiología , Resultado del Tratamiento
6.
Am J Trop Med Hyg ; 96(5): 1039-1041, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-28193743

RESUMEN

AbstractThe etiologic agent of yaws, Treponema pallidum subsp. pertenue, causes a multistage infection transmitted by nonsexual contact with the exudates from active lesions. Bone lesions in the form of osteoperiostitis are common and occur in numerous bones simultaneously in early stages. Although a multinational eradication campaign with mass administration of intramuscular benzathine benzylpenicillin in the 1950s greatly reduced its global incidence, a resurgence of yaws has occurred since around 2000 in western and central Africa and the Pacific Islands. The finding that a single oral dose of azithromycin (30 mg/kg) was as effective as benzathine benzylpenicillin prompted renewed interest by World Health Organization in 2012 toward eradication of this infection by 2020. We previously reported the excellent response to benzathine benzylpenicillin therapy for yaws osteoperiostitis. Herein, we document a confirmed case of yaws with osteoperiostitis successfully treated with single-dose azithromycin and discuss the pathology of yaws periostitis and comment on the implications of this in light of the new campaign toward yaws eradication.


Asunto(s)
Antibacterianos/uso terapéutico , Azitromicina/uso terapéutico , ADN Bacteriano/aislamiento & purificación , Periostitis/tratamiento farmacológico , Treponema pallidum/efectos de los fármacos , Buba/tratamiento farmacológico , Preescolar , Humanos , Pierna/diagnóstico por imagen , Pierna/microbiología , Pierna/patología , Masculino , Periostio/diagnóstico por imagen , Periostio/efectos de los fármacos , Periostio/microbiología , Periostio/patología , Periostitis/diagnóstico por imagen , Periostitis/microbiología , Periostitis/patología , Tomografía Computarizada por Rayos X , Resultado del Tratamiento , Treponema pallidum/genética , Treponema pallidum/aislamiento & purificación , Muñeca/diagnóstico por imagen , Muñeca/microbiología , Muñeca/patología , Buba/diagnóstico por imagen , Buba/microbiología , Buba/patología
7.
Pediatr Ann ; 45(5): e176-9, 2016 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-27171806

RESUMEN

Acute mastoiditis (AM) is a relatively rare complication of acute otitis media (AOM). The most common pathogens include Streptococcus pneumoniae, Streptococcus pyogenes, and Staphylococcus aureus. Pneumococcal vaccination and changes in antibiotic prescribing recommendations for AOM may change the incidence of AM in the future. Diagnosis of AM can be made based on clinical presentation, but computed tomography of the temporal bone with contrast should be considered if there is concern for complicated AM. Both extracranial and intracranial complications of AM may occur. Previously, routine cortical mastoidectomy was recommended for AM treatment, but new data suggest that a more conservative treatment approach can be considered, including intravenous (IV) antibiotics alone or IV antibiotics with myringotomy. [Pediatr Ann. 2016;45(5):e176-e179.].


Asunto(s)
Mastoiditis/microbiología , Otitis Media con Derrame/microbiología , Infecciones Neumocócicas/microbiología , Streptococcus pneumoniae/aislamiento & purificación , Absceso/diagnóstico por imagen , Absceso/tratamiento farmacológico , Absceso/microbiología , Enfermedad Aguda , Antibacterianos/uso terapéutico , Ceftriaxona/uso terapéutico , Femenino , Humanos , Lactante , Apófisis Mastoides/patología , Apófisis Mastoides/cirugía , Mastoiditis/diagnóstico , Mastoiditis/terapia , Otitis Media con Derrame/tratamiento farmacológico , Periostio/diagnóstico por imagen , Periostitis/diagnóstico por imagen , Periostitis/tratamiento farmacológico , Periostitis/microbiología , Infecciones Neumocócicas/tratamiento farmacológico , Tomografía Computarizada por Rayos X
8.
Transpl Infect Dis ; 15(4): 424-9, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23663268

RESUMEN

Fungal infections are common in solid organ transplantation. An increasing number of transplant recipients receive antifungal therapy for prolonged duration owing to invasive fungal infections. Herein, we describe a diagnosis of periostitis as a complication of chronic use of voriconazole in a lung transplant recipient. The patient was diagnosed with probable pulmonary aspergillosis and was treated with oral voriconazole for a total of 9 months. Evidence of multifocal periostitis was observed in the axial and appendicular skeleton. Early recognition of this phenomenon is important to prevent unnecessary tests and procedures. Prompt discontinuation of voriconazole should result in improvement of symptoms.


Asunto(s)
Antifúngicos/efectos adversos , Enfermedades Pulmonares Fúngicas/tratamiento farmacológico , Trasplante de Pulmón/efectos adversos , Periostitis/microbiología , Aspergilosis Pulmonar/tratamiento farmacológico , Pirimidinas/efectos adversos , Triazoles/efectos adversos , Anciano , Antifúngicos/uso terapéutico , Quimioprevención , Femenino , Humanos , Enfermedades Pulmonares Fúngicas/complicaciones , Enfermedades Pulmonares Fúngicas/microbiología , Masculino , Periostitis/complicaciones , Periostitis/diagnóstico , Periostitis/tratamiento farmacológico , Aspergilosis Pulmonar/complicaciones , Aspergilosis Pulmonar/microbiología , Pirimidinas/uso terapéutico , Triazoles/uso terapéutico , Voriconazol
10.
Turk J Pediatr ; 51(2): 169-71, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-19480330

RESUMEN

Congenital syphilis is the oldest recognized congenital infection and still represents a serious healthcare problem in the 21st century. It is important to be fully informed regarding the early diagnosis and treatment of congenital syphilis to prevent its devastating complications leading to death. In this manuscript, we report a newborn infant with unusual clinical findings of congenital syphilis such as a non-fluctuant mass surrounding the left calf. She did not have any additional system involvement such as hepatic or skin involvement or lymph nodes. To our best knowledge, there are only a few case reports presented with isolated bone involvement. This case demonstrates that congenital syphilis should be considered in neonates with bone fractures, lytic bone lesions and periostitis.


Asunto(s)
Periostitis/diagnóstico , Periostitis/microbiología , Sífilis Congénita/complicaciones , Sífilis Congénita/diagnóstico , Treponema pallidum , Antibacterianos/uso terapéutico , Femenino , Peroné/diagnóstico por imagen , Peroné/microbiología , Humanos , Recién Nacido , Infusiones Intravenosas , Imagen por Resonancia Magnética , Penicilina G/uso terapéutico , Periostitis/tratamiento farmacológico , Radiografía , Sífilis Congénita/tratamiento farmacológico , Ultrasonografía
11.
Stomatologiia (Mosk) ; 88(2): 39-42, 2009.
Artículo en Ruso | MEDLINE | ID: mdl-19491783

RESUMEN

150 patients with acute festering odontogenic periostitis were under observation. In 75 of them Koletex-M absorbent paper was used as draining material containing as active components metronidazole, dimexide and sodium alginate. In the control group of patients traditional schemes of treatment were used. Treatment process efficacy was estimated by microbiological and cytological studies. It was found that Koletex-M absorbent paper use reduced postoperative wound microbe semination. In 3 days the cells of regenerative series were found that led to speedy wound healing and reduction of temporary disability terms.


Asunto(s)
Almohadillas Absorbentes , Enfermedades Maxilomandibulares/terapia , Papel , Periostitis/terapia , Enfermedad Aguda , Adolescente , Adulto , Bacterias Aerobias/clasificación , Bacterias Aerobias/aislamiento & purificación , Bacterias Anaerobias/clasificación , Bacterias Anaerobias/aislamiento & purificación , Candida/clasificación , Candida/aislamiento & purificación , Femenino , Humanos , Enfermedades Maxilomandibulares/microbiología , Enfermedades Maxilomandibulares/patología , Masculino , Persona de Mediana Edad , Periostitis/microbiología , Periostitis/patología , Supuración/microbiología , Supuración/terapia , Adulto Joven
12.
Int J Pediatr Otorhinolaryngol ; 73(9): 1183-6, 2009 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-19249108

RESUMEN

This review describes the microbiology, and medical management of orbital and intracranial complications of sinusitis in children. The most common complications are orbital cellulitis, subperiosteal abscess, orbital abscess, brain abscess, subdural empyema and meningitis. The predominate organisms recovered from these infection are anaerobic, aerobic, and microaerophilic bacteria of oral flora origin. Establishing the microbiology by obtaining appropriate cultures for both aerobic and anaerobic bacteria are essential for proper antimicrobial selection. Early recognition and appropriate surgical and medical therapy are essential to ensure recovery.


Asunto(s)
Absceso/microbiología , Celulitis (Flemón)/microbiología , Infecciones Bacterianas del Sistema Nervioso Central/microbiología , Enfermedades Orbitales/microbiología , Periostitis/microbiología , Sinusitis/complicaciones , Absceso/tratamiento farmacológico , Antibacterianos/uso terapéutico , Celulitis (Flemón)/tratamiento farmacológico , Infecciones Bacterianas del Sistema Nervioso Central/tratamiento farmacológico , Niño , Preescolar , Humanos , Enfermedades Orbitales/tratamiento farmacológico , Periostitis/tratamiento farmacológico
13.
Int J STD AIDS ; 17(6): 421-3, 2006 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-16734969

RESUMEN

A 36-year-old man presented for an HIV test, which answered positive. He gave a six-week history of headache and fever. His syphilis serology was also positive with a Venereal Disease Research Laboratory (VDRL) titre of 1:32, and positive Treponema pallidum particle agglutination (TPPA) assay and fluorescent treponemal antibody (FTA). When he attended for treatment of the syphilis, he had developed severe pain in both lower limbs. Plain radiographs were normal. An isotope bone scan showed multiple areas of increased uptake, consistent with syphilitic periostitis. Some of these lesions were asymptomatic. He was treated with benzathine penicillin and his pain resolved. The bone scan had normalized after six months. We review the previous literature regarding syphilitic bone pain and periostitis. We discuss the importance of considering syphilis in the differential diagnosis of any sexually active adult presenting with bone pain, and highlight the usefulness of isotope bone scans in clarifying the clinical picture.


Asunto(s)
Seropositividad para VIH/diagnóstico , Periostitis/diagnóstico por imagen , Periostitis/microbiología , Sífilis/complicaciones , Sífilis/diagnóstico por imagen , Adulto , Prueba de Absorción de Anticuerpos Fluorescentes de Treponema , Anticuerpos Anti-VIH/sangre , Seropositividad para VIH/complicaciones , Humanos , Masculino , Cintigrafía , Serodiagnóstico de la Sífilis , Treponema pallidum
14.
Eur J Pediatr ; 165(5): 290-2, 2006 May.
Artículo en Inglés | MEDLINE | ID: mdl-16411090

RESUMEN

Congenital syphilis is now rare in Australia, particularly in suburban areas. The disease is both preventable and treatable, however, missed or late diagnosis can lead to catastrophic effects. We report an infant who developed congenital syphilis after multiple opportunities for preventing this condition were missed.


Asunto(s)
Población Suburbana , Sífilis Congénita/diagnóstico , Anemia/tratamiento farmacológico , Anemia/microbiología , Australia , Epífisis/anomalías , Humanos , Lactante , Pruebas de Función Hepática , Masculino , Penicilinas/uso terapéutico , Periostitis/microbiología , Rinitis/tratamiento farmacológico , Rinitis/microbiología , Sífilis Congénita/tratamiento farmacológico , Tibia/anomalías
15.
Ophthalmic Plast Reconstr Surg ; 21(5): 363-6; discussion 366-7, 2005 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-16234700

RESUMEN

PURPOSE: To determine the effect of intravenous corticosteroids in the acute management of pediatric orbital cellulitis with subperiosteal abscess. METHODS: The inpatient records of all patients treated for orbital cellulitis with subperiosteal orbital abscess between January 2001 and August 2003 were reviewed. The use of corticosteroids, length of hospital stay, need for surgical drainage, treatment course, and clinical outcomes were reviewed. A t test and Fisher exact test analysis were calculated to evaluate statistical significance. RESULTS: Twelve patients received intravenous corticosteroids and 11 patients did not receive corticosteroids. All patients had complete resolution of their abscess without complications. Length of hospitalization between the patients treated with and without intravenous corticosteroids was not significantly different (p = 0.26). Four of 12 patients treated with intravenous corticosteroids underwent orbitotomy for drainage of the abscess, and 6 of 11 patients treated without intravenous corticosteroids underwent surgical drainage (p = 0.20). Two of 12 patients treated with corticosteroids received intravenous antibiotics after discharge, whereas 7 of 11 in the group not treated with corticosteroids received intravenous antibiotics after discharge (p = 0.03). CONCLUSIONS: The use of intravenous corticosteroids does not appear to adversely affect clinical outcomes and may be beneficial in the treatment of pediatric orbital cellulitis with subperiosteal abscess. Review of our data suggests that a prospective, randomized trial is warranted to further clarify the role of corticosteroids in the acute management of pediatric orbital cellulitis with subperiosteal abscess.


Asunto(s)
Absceso/tratamiento farmacológico , Celulitis (Flemón)/tratamiento farmacológico , Glucocorticoides/uso terapéutico , Enfermedades Orbitales/tratamiento farmacológico , Periostitis/tratamiento farmacológico , Absceso/diagnóstico por imagen , Absceso/microbiología , Adolescente , Celulitis (Flemón)/diagnóstico por imagen , Celulitis (Flemón)/microbiología , Niño , Preescolar , Femenino , Hospitalización/estadística & datos numéricos , Humanos , Lactante , Recién Nacido , Infusiones Intravenosas , Masculino , Enfermedades Orbitales/diagnóstico por imagen , Enfermedades Orbitales/microbiología , Periostitis/diagnóstico por imagen , Periostitis/microbiología , Estudios Retrospectivos , Tomografía Computarizada por Rayos X
16.
Stomatologiia (Mosk) ; 84(3): 23-6, 2005.
Artículo en Ruso | MEDLINE | ID: mdl-16007008

RESUMEN

Results are presented on treatment of 68 patients with acute suppurative periostitis of maxillofacial region. After surgical interventions in patients of the study group (48 patients) the wounds were cleansed by 1% chitosan on 0.2% HC1 in combination with methylene blue and irradiated by IR laser beam. The wounds healed in 2-3 days. In the control group (20 patients) for wound dressing chlorhexidine as a standard procedure was used, length of the healing process was 5-6 days. After combined treatment the number of microflora in the wound was reduced and microflora did not show the signs of pathogenicity.


Asunto(s)
Quitosano/uso terapéutico , Terapia por Luz de Baja Intensidad , Enfermedades Maxilares/microbiología , Enfermedades Maxilares/terapia , Periostitis/microbiología , Periostitis/terapia , Fármacos Fotosensibilizantes/uso terapéutico , Adolescente , Adulto , Anciano , Terapia Combinada , Femenino , Humanos , Masculino , Persona de Mediana Edad , Supuración/microbiología , Supuración/terapia , Resultado del Tratamiento
17.
Australas Radiol ; 49(4): 312-4, 2005 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-16026438

RESUMEN

We report the unusual ultrasound appearance of coalescent otomastoiditis with subperiosteal abscess in a 3-month-old boy with a 1-week history of an enlarging lump behind the left ear. Ultrasound examination of the lump revealed subcutaneous oedema with an abscess extending from a defect in the cranial vault as a result of extension of the inflammatory process. We believe that this sonographic appearance has not been previously described in the published literature.


Asunto(s)
Absceso/diagnóstico por imagen , Mastoiditis/diagnóstico por imagen , Periostitis/diagnóstico por imagen , Infecciones Estreptocócicas/diagnóstico por imagen , Absceso/microbiología , Enfermedad Aguda , Diagnóstico Diferencial , Humanos , Lactante , Masculino , Mastoiditis/microbiología , Otitis Media/microbiología , Periostitis/microbiología , Streptococcus pneumoniae/aislamiento & purificación , Tomografía Computarizada por Rayos X , Ultrasonografía
18.
J Coll Physicians Surg Pak ; 13(12): 719-21, 2003 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-15569562

RESUMEN

Symmetrical exuberant periostitis is a rare disease caused by variety of infectious and non-infectious causes. Treponematosis is one of the rare causes of this condition. We report a patient who presented with left arm swelling, secondary to onion peel periostitis of the humerus, which was caused by Treponema species.


Asunto(s)
Periostitis , Infecciones por Treponema , Niño , Humanos , Húmero/diagnóstico por imagen , Húmero/patología , Masculino , Periostitis/microbiología , Radiografía , Infecciones por Treponema/complicaciones
19.
J Neuroophthalmol ; 22(3): 208-10, 2002 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-12352584

RESUMEN

The authors present a case of progressive unilateral proptosis caused by tuberculous osteoperiostitis of the orbital walls and sphenoid bone with extraconal orbital and extradural intracranial cold abscess formation. The patient responded well to surgical evacuation and antituberculous medical therapy.


Asunto(s)
Absceso/microbiología , Órbita , Enfermedades Orbitales/microbiología , Osteítis/microbiología , Periostitis/microbiología , Tuberculosis Ocular , Absceso/diagnóstico , Niño , Femenino , Humanos , Imagen por Resonancia Magnética , Enfermedades Orbitales/diagnóstico , Osteítis/diagnóstico , Periostitis/diagnóstico , Tomografía Computarizada por Rayos X
20.
Vector Borne Zoonotic Dis ; 1(1): 35-44, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-12653134

RESUMEN

Four laboratory-grown, low-passage isolates of Borrelia burgdorferi sensu stricto, B31, JD-1, 910255, and N40, were incorporated into Ixodes scapularis ticks to examine the pathogenesis of these isolates in mice after tick transmission. All isolates induced multifocal, lymphoid nodular cystitis, subacute, multifocal, necrotizing myocarditis, and a localized periostitis and arthritis of the femorotibial joint 6-18 weeks after tick infestation. In terms of the number of mice that demonstrated pathology in bladder, heart, and joint, the highest incidence of lesions occurred 12 weeks after tick bite. Utilizing the Taqman quantitative polymerase chain reaction (q-PCR) fluorogenic detection technology to amplify a conserved region of the flagellin gene, a trend was demonstrated between the number of spirochetes in tissue with duration of pathology. The q-PCR assay developed for this study was sensitive and could reliably measure as few as 1 to 10 spirochetes in the target tissues tested. A higher percentage of B31- and N40-infected mice (92 and 100%, respectively) developed myocarditis than JD-1- or 910255-infected mice (67 and 46%, respectively) 12 weeks after tick bite. The amount of spirochetal DNA that could be amplified for heart at this time point was not statistically different between isolates, indicating a difference in virulence between B31 and N40 relative to JD-1 and 910225. N40-infected mice demonstrated a significantly higher spirochete load (an average of 1.23 spirochetes/mg of tissue, p = 0.045) in femorotibial joints 18 weeks after infection, with 60% of these mice maintaining lesions compared with those infected with B31 (13%), JD-1 (25%), or 910255 (50%), which averaged <0.5 spirochetes/mg of tissue. This mouse model of Lyme borreliosis, including the ability to monitor lesion development and spirochete load, can facilitate the testing of therapeutic regimens for the later stages of tick-transmitted Lyme disease and help investigate aspects of the immunopathogenesis of lesion development.


Asunto(s)
Vectores Arácnidos/microbiología , Borrelia burgdorferi/patogenicidad , Ixodes/microbiología , Enfermedad de Lyme/microbiología , Infestaciones por Garrapatas/complicaciones , Animales , Artritis Infecciosa/microbiología , Artritis Infecciosa/patología , Borrelia burgdorferi/clasificación , Cistitis/microbiología , Cistitis/patología , ADN Bacteriano/química , Modelos Animales de Enfermedad , Enfermedad de Lyme/patología , Enfermedad de Lyme/transmisión , Ratones , Ratones Endogámicos C3H , Miocarditis/microbiología , Miocarditis/patología , Periostitis/microbiología , Periostitis/patología , Factores de Tiempo , Virulencia
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