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1.
Am J Emerg Med ; 38(6): 1295.e1-1295.e2, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-31926666

RESUMO

Sialolithiasis represents the most common issue of the salivary gland, ranging from asymptomatic to airway compromising. In rapidly progressing, completely obstructive salivary stones, the presentation can mimic emergent oropharyngeal diseases, primarily Ludwig's angina. We present a case of a large and obstructive sialolith with abscess whose initial presentation was concerning for Ludwig's angina with impending airway compromise. While a common complaint, emergency providers should be aware of the nefarious presentation of an everyday complaint.


Assuntos
Abscesso/etiologia , Angina de Ludwig/fisiopatologia , Cálculos das Glândulas Salivares/diagnóstico , Abscesso/fisiopatologia , Feminino , Humanos , Angina de Ludwig/diagnóstico , Pessoa de Meia-Idade , Cálculos das Glândulas Salivares/complicações , Cálculos das Glândulas Salivares/fisiopatologia , Tomografia Computadorizada por Raios X/métodos
2.
Radiographics ; 39(7): 2023-2037, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31697616

RESUMO

Extrapulmonary tuberculosis (TB) represents approximately 15% of all TB infections. It is difficult to diagnose on the basis of imaging characteristics and clinical symptoms, and biopsy is required in many cases. Radiologists must be aware of the imaging findings of extrapulmonary TB to identify the condition in high-risk patients, even in the absence of active pulmonary infection. In extrapulmonary TB, the lymphatic system is most frequently affected. The presence of necrotic lymph nodes and other organ-specific imaging features increases the diagnostic probability of extrapulmonary TB. Disseminated infection and central nervous system involvement are the most frequent manifestations in immunosuppressed patients. Renal disease can occur in immunocompetent patients with very long latency periods between the primary pulmonary infection and genitourinary involvement. In several cases, gastrointestinal, solid-organ, and peritoneal TB show nonspecific imaging findings. Tuberculous spondylitis is the most frequent musculoskeletal manifestation. It is usually diagnosed late and affects multiple vertebral segments with extensive paraspinal abscess. Articular disease is the second most frequent musculoskeletal manifestation, and synovitis is its predominant imaging finding.©RSNA, 2019.


Assuntos
Imageamento por Ressonância Magnética/métodos , Tuberculose/diagnóstico por imagem , Abscesso/diagnóstico por imagem , Abscesso/fisiopatologia , Diagnóstico Diferencial , Feminino , Humanos , Masculino , Doenças Musculares/diagnóstico por imagem , Doenças Musculares/fisiopatologia , Risco , Tuberculoma/diagnóstico por imagem , Tuberculose/fisiopatologia , Tuberculose do Sistema Nervoso Central/diagnóstico por imagem , Tuberculose do Sistema Nervoso Central/fisiopatologia , Tuberculose dos Linfonodos/diagnóstico por imagem , Tuberculose dos Linfonodos/fisiopatologia , Tuberculose Meníngea/diagnóstico por imagem , Tuberculose Meníngea/fisiopatologia , Tuberculose Osteoarticular/diagnóstico por imagem , Tuberculose Osteoarticular/fisiopatologia , Tuberculose Urogenital/diagnóstico por imagem , Tuberculose Urogenital/fisiopatologia
3.
Breast J ; 25(6): 1263-1265, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-31286616

RESUMO

We present a rare case of a rapidly fulminant and destructive breast abscess with gas production by the synergistic infection of Veillonella and Streptococcus species. To our knowledge, this is the first reported case of Veillonella infection in the breast. Early recognition, empiric antibiotic cover, aggressive surgical debridement, and drainage are necessary to avoid systemic septicemia. Staged reconstructive breast surgery allows for correction any resultant breast deformity.


Assuntos
Abscesso , Antibacterianos/administração & dosagem , Doenças Mamárias , Drenagem/métodos , Infecções por Bactérias Gram-Negativas , Infecções Estreptocócicas , Streptococcus gordonii/isolamento & purificação , Streptococcus/isolamento & purificação , Veillonella/isolamento & purificação , Abscesso/tratamento farmacológico , Abscesso/microbiologia , Abscesso/fisiopatologia , Abscesso/cirurgia , Adulto , Mama/diagnóstico por imagem , Mama/cirurgia , Doenças Mamárias/diagnóstico , Doenças Mamárias/tratamento farmacológico , Doenças Mamárias/microbiologia , Doenças Mamárias/cirurgia , Aleitamento Materno/efeitos adversos , Coinfecção , Intervenção Médica Precoce/métodos , Feminino , Infecções por Bactérias Gram-Negativas/fisiopatologia , Infecções por Bactérias Gram-Negativas/terapia , Humanos , Mamoplastia/métodos , Infecções Estreptocócicas/fisiopatologia , Infecções Estreptocócicas/terapia , Streptococcus sanguis , Resultado do Tratamento
4.
Gynecol Endocrinol ; 35(2): 150-154, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30132350

RESUMO

The aim of this study is to evaluate the sexual functionality before and after treatment of Bartholin's gland diseases (BGD) with CO2 laser and to compare our results to patients who underwent surgical cold knife and to a healthy control group (HCG). Consecutive patients (n = 15) affected by BG cyst or abscess who underwent CO2 laser treatment were evaluated. Patients were asked to complete the Italian translation of the Female Sexual Functioning Index (FSFI) before and 4 weeks after treatment. Results after CO2 laser were compared with two control groups: patients affected by BG cyst (n = 15) or abscess treated with surgical cold knife treatment and a HCG (n = 18). A statistically significant advantage of CO2 laser versus cold knife treatment in terms of lubrication, pain and global score were recorded. Both the single scores of five domains and total score of FSFI were globally higher after any treatment compared to before (CO2 and cold knife) of BGD. According to our data, CO2 laser therapy is often well tolerated by patients and correlated with a favorable sexual health recovery.


Assuntos
Abscesso/cirurgia , Glândulas Vestibulares Maiores/cirurgia , Cistos/cirurgia , Disfunções Sexuais Fisiológicas/fisiopatologia , Saúde Sexual , Doenças da Vulva/cirurgia , Abscesso/fisiopatologia , Adulto , Glândulas Vestibulares Maiores/fisiopatologia , Estudos de Casos e Controles , Cistos/fisiopatologia , Dispareunia/fisiopatologia , Feminino , Humanos , Terapia a Laser , Lasers de Gás , Medidas de Resultados Relatados pelo Paciente , Projetos Piloto , Recuperação de Função Fisiológica , Resultado do Tratamento , Doenças da Vulva/fisiopatologia
5.
Pediatr Dermatol ; 36(4): e93-e94, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-31042815

RESUMO

Up to 1.3 million children from the former Soviet Union (fSU) and Eastern Europe have been placed in institutional care worldwide. With the hope of ensuring the child's health in the immediate post-adoption period, these children are known to receive many injections of vaccines, vitamins, and medications, many unnecessary and often administered with unsafe technique. This practice can lead to formation of suppurative granulomas in these children. Though rare, dermatologists should be aware of these conditions in adoptees from Eastern Europe.


Assuntos
Abscesso/tratamento farmacológico , Abscesso/etiologia , Granuloma/etiologia , Dermatopatias/tratamento farmacológico , Dermatopatias/etiologia , Abscesso/fisiopatologia , Criança Adotada/estatística & dados numéricos , Claritromicina/uso terapêutico , Europa Oriental , Feminino , Granuloma/tratamento farmacológico , Granuloma/fisiopatologia , Humanos , Lactente , Injeções Intramusculares/efeitos adversos , Rifampina/uso terapêutico , Medição de Risco , Federação Russa , Dermatopatias/fisiopatologia , U.R.S.S.
6.
Am Fam Physician ; 99(12): 760-766, 2019 06 15.
Artigo em Inglês | MEDLINE | ID: mdl-31194482

RESUMO

The Bartholin glands, located in the base of the labia minora, have a role in vaginal lubrication. Because of the presence of other glands, removal of a Bartholin gland does not affect lubrication. Ductal blockage of these typically pea-sized structures can result in enlargement of the gland and subsequent development of Bartholin duct cysts or gland abscesses. Two percent of women will develop a cyst or an abscess in their lifetime, and physicians should be familiar with the range of treatment options. Bartholin duct cysts and gland abscesses can be treated in the office. The healing and recurrence rates are similar among fistulization, marsupialization, and silver nitrate and alcohol sclerotherapy. Needle aspiration and incision and drainage, the two simplest procedures, are not recommended because of the relatively increased recurrence rate.


Assuntos
Abscesso/fisiopatologia , Abscesso/cirurgia , Procedimentos Cirúrgicos Ambulatórios/normas , Glândulas Vestibulares Maiores/fisiopatologia , Glândulas Vestibulares Maiores/cirurgia , Cistos/fisiopatologia , Cistos/cirurgia , Guias de Prática Clínica como Assunto , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Pessoa de Meia-Idade
7.
J Hand Surg Am ; 44(11): 973-979, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31445696

RESUMO

Transradial catheterization and cannulation are typically well-tolerated procedures, but they are associated with various vascular, infectious, and orthopedic complications. Potential complications include radial artery occlusion, hematoma formation, radial artery laceration, pseudoaneurysm, abscess formation, and compartment syndrome. Hand surgeons are commonly consulted to treat such complications. We review recent evidence available to guide decisions about nonsurgical and surgical interventions to treat and prevent the complications associated with transradial access procedures.


Assuntos
Falso Aneurisma/etiologia , Arteriopatias Oclusivas/etiologia , Cateterismo/efeitos adversos , Síndromes Compartimentais/etiologia , Hematoma/etiologia , Artéria Radial , Abscesso/etiologia , Abscesso/fisiopatologia , Idoso , Falso Aneurisma/fisiopatologia , Arteriopatias Oclusivas/fisiopatologia , Cateterismo/métodos , Síndromes Compartimentais/fisiopatologia , Feminino , Hematoma/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Pele/microbiologia , Pele/patologia
8.
Isr Med Assoc J ; 21(12): 806-811, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31814344

RESUMO

BACKGROUND: Untreated dental caries or even dental manipulations, such as a tooth extraction, might cause direct spread of an odontogenic infection and consequently the development of life-threatening conditions such as deep neck infections (DNI). The most common source of DNI is of odontogenic origin (38.8-49%). Abscess formation or cellulitis can lead to life-threatening complications, despite new diagnostic imaging technology and widespread availability of antibiotics. OBJECTIVES: To demonstrate the dangers of DNI, which can create life-threatening situations. METHODS: Five cases of DNI of odontogenic origin, which were referred to the oral and maxillofacial surgery unit, are presented. RESULTS: Clinical manifestations included trismus, dysphagia, dysphonia, dyspnea, and infection symptoms. In all cases, computed tomography confirmed diagnosis and extent of abscess. Complications included mediastinitis, respiratory distress, osteomyelitis of the jaws, and in rare cases the mandibular condyle. Treatment included securing the airway, immediate surgical drainage, removal of the infection source, and antibiotic therapy. All patients were discharged in stable and improved condition. CONCLUSIONS: DNI treatment on an emergency basis requires proper diagnosis and effective management. To confirm diagnosis and prevent serious complications, it is essential for physicians to recognize the spaces of the head and neck that are likely to be affected by DNI.


Assuntos
Abscesso , Antibacterianos/administração & dosagem , Celulite (Flegmão) , Cárie Dentária/complicações , Drenagem/métodos , Pescoço , Procedimentos Cirúrgicos Bucais/métodos , Extração Dentária/efeitos adversos , Abscesso/diagnóstico , Abscesso/etiologia , Abscesso/fisiopatologia , Abscesso/cirurgia , Adulto , Idoso , Celulite (Flegmão)/diagnóstico , Celulite (Flegmão)/etiologia , Celulite (Flegmão)/fisiopatologia , Celulite (Flegmão)/cirurgia , Feminino , Humanos , Masculino , Mediastinite/diagnóstico , Mediastinite/etiologia , Mediastinite/terapia , Pessoa de Meia-Idade , Pescoço/diagnóstico por imagem , Pescoço/patologia , Osteomielite/diagnóstico , Osteomielite/etiologia , Osteomielite/terapia , Tomografia Computadorizada por Raios X/métodos , Resultado do Tratamento
9.
Aesthetic Plast Surg ; 42(5): 1388-1392, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29948096

RESUMO

BACKGROUND: The widespread desire to maintain youth and beauty with minimally invasive procedures made the use of soft tissue fillers an attractive option to correct numerous aesthetic problems. However, many complications have emerged recently especially with the use of non-FDA-approved permanent materials. In this case report, we are demonstrating the effective management of a patient with Brucella isolated from a facial abscess at the site of prior permanent filler injection done 17 years ago. METHODS: A 56-year-old woman presented complaining of painful swelling of the right cheek after a failed trial of filler evacuation and intralesional corticosteroid injection. The patient was interviewed carefully, and physical examination was performed, followed by culture and imaging. RESULTS: The patient had a facial abscess that was complicated by parotid infiltration by Brucella. Eventually she was managed successfully by anti-Brucella antibiotics for 6 months with no further complaints. A review of causative organisms in the literature along with recommendations for management is discussed. CONCLUSION: Permanent fillers have shown many complications that can occur even years after injection. Therefore, physicians should be careful when using permanent fillers and should restrict their use to certain situations. Moreover, rare infections must be kept in mind and careful history, including travel history and animal contact, needs to be considered particularly in the unusual scenarios. LEVEL OF EVIDENCE V: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .


Assuntos
Abscesso/etiologia , Brucella/isolamento & purificação , Brucelose/etiologia , Preenchedores Dérmicos/efeitos adversos , Face , Dermatopatias Bacterianas/etiologia , Abscesso/tratamento farmacológico , Abscesso/fisiopatologia , Antibacterianos/uso terapêutico , Brucelose/tratamento farmacológico , Brucelose/fisiopatologia , Feminino , Seguimentos , Humanos , Injeções Subcutâneas/efeitos adversos , Pessoa de Meia-Idade , Medição de Risco , Dermatopatias Bacterianas/tratamento farmacológico , Dermatopatias Bacterianas/fisiopatologia , Resultado do Tratamento
10.
Proc Natl Acad Sci U S A ; 111(10): E943-52, 2014 Mar 11.
Artigo em Inglês | MEDLINE | ID: mdl-24567393

RESUMO

Mycobacterium abscessus is a rapidly growing Mycobacterium causing a wide spectrum of clinical syndromes. It now is recognized as a pulmonary pathogen to which cystic fibrosis patients have a particular susceptibility. The M. abscessus rough (R) variant, devoid of cell-surface glycopeptidolipids (GPLs), causes more severe clinical disease than the smooth (S) variant, but the underlying mechanisms of R-variant virulence remain obscure. Exploiting the optical transparency of zebrafish embryos, we observed that the increased virulence of the M. abscessus R variant compared with the S variant correlated with the loss of GPL production. The virulence of the R variant involved the massive production of serpentine cords, absent during S-variant infection, and the cords initiated abscess formation leading to rapid larval death. Cording occurred within the vasculature and was highly pronounced in the central nervous system (CNS). It appears that M. abscessus is transported to the CNS within macrophages. The release of M. abscessus from apoptotic macrophages initiated the formation of cords that grew too large to be phagocytized by macrophages or neutrophils. This study is a description of the crucial role of cording in the in vivo physiopathology of M. abscessus infection and emphasizes cording as a mechanism of immune evasion.


Assuntos
Abscesso/fisiopatologia , Fatores Corda/metabolismo , Glicolipídeos/metabolismo , Glicopeptídeos/metabolismo , Fatores Imunológicos/metabolismo , Infecções por Mycobacterium/fisiopatologia , Mycobacterium/patogenicidade , Animais , Ácido Clodrônico , Fatores Corda/imunologia , Primers do DNA/genética , Embrião não Mamífero , Histocitoquímica , Processamento de Imagem Assistida por Computador , Macrófagos/metabolismo , Microscopia de Fluorescência , Morfolinos/administração & dosagem , Morfolinos/genética , Mycobacterium/citologia , Mycobacterium/metabolismo , Fagocitose/fisiologia , Virulência , Peixe-Zebra
11.
Vestn Otorinolaringol ; 82(2): 74-76, 2017.
Artigo em Russo | MEDLINE | ID: mdl-28514370

RESUMO

This article was designed to report a case of otogenic abscess of the temporomandibular joint in a 5 year-old child. The specific feature of this observation is a rare complication of acute otitis media (otogenic abscess of the temporomandibular joint). Of crucial importance for the establishment of the correct diagnosis was the timely evaluation of the state of the temporomandibular bones by means of CT examination.


Assuntos
Abscesso , Ceftriaxona/administração & dosagem , Mastoidite , Otite Média Supurativa/complicações , Procedimentos Cirúrgicos Otorrinolaringológicos/métodos , Articulação Temporomandibular , Abscesso/diagnóstico , Abscesso/etiologia , Abscesso/fisiopatologia , Abscesso/cirurgia , Administração Intravenosa , Antibacterianos/administração & dosagem , Pré-Escolar , Drenagem/métodos , Humanos , Masculino , Mastoidite/diagnóstico por imagem , Mastoidite/patologia , Articulação Temporomandibular/diagnóstico por imagem , Articulação Temporomandibular/patologia , Tomografia Computadorizada por Raios X/métodos , Resultado do Tratamento
13.
Infect Dis Obstet Gynecol ; 2016: 5120293, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26989337

RESUMO

OBJECTIVE: Although parenteral antibiotic treatment is a standard approach for tuboovarian abscesses, a significant proportion of patients fail therapy and require interventional radiology (IR) guided drainage. The objective of this study is to assess if specific clinical factors are associated with antibiotic treatment failure. STUDY DESIGN: Retrospective medical record review of patients hospitalized for tuboovarian abscesses from 2001 through 2012 was performed. Clinical characteristics were compared for patients who underwent successful parenteral antibiotic treatment, failed antibiotic treatment necessitating subsequent IR drainage, initial drainage with concurrent antibiotics, and surgery. RESULTS: One hundred thirteen patients admitted for inpatient treatment were identified. Sixty-one (54%) patients were treated with antibiotics alone. Within this group, 24.6% failed antibiotic treatment and required drainage. Mean white blood cell count (K/µL) (18.7 ± 5.94 versus 13.9 ± 5.12) (p = 0.003), mean maximum diameter of tuboovarian abscess (cm) (6.8 ± 2.9 versus 5.2 ± 2.0) (p = 0.03), and length of stay (days) (9.47 ± 7.43 versus 4.59 ± 2.4) (p = 0.002) were significantly greater for patients who failed antibiotic treatment. CONCLUSIONS: Admission white blood cell count greater than 16 K/µL and abscess size greater than 5.18 cm are associated with antibiotic treatment failure. These factors may provide guidance for initial selection of IR guided drainage.


Assuntos
Abscesso/tratamento farmacológico , Antibacterianos/uso terapêutico , Doenças das Tubas Uterinas/tratamento farmacológico , Doenças Ovarianas/tratamento farmacológico , Abscesso/fisiopatologia , Adolescente , Adulto , Idoso , Doenças das Tubas Uterinas/fisiopatologia , Feminino , Humanos , Pessoa de Meia-Idade , Doenças Ovarianas/fisiopatologia , Estudos Retrospectivos , Falha de Tratamento , Adulto Jovem
14.
Heart Lung Circ ; 30(4): e59-e60, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33262023
15.
Endocr Pract ; 21(4): 339-47, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25932567

RESUMO

OBJECTIVE: Endocrine dysfunction caused by pituitary abscess (PA) and its outcomes have not been fully studied. This study aims to investigate endocrine dysfunction and outcomes in patients with PA. METHODS: Eight patients (3 males and 5 females) with PA were identified for collecting clinical, hormone, and therapeutic data before and after long-term follow-up lasting 12 to 116 months (median, 25 months) since the first hospitalization, which was regarded as the baseline time. All patients' pituitary and respective target gland functions were evaluated. Six patients had acute onset (less than 1 month), and the other 2 patients had chronic onset (more than 6 months). Five patients underwent surgical therapy, and the other 3 patients underwent conservative therapy. The factors associated with endocrine outcome were analyzed as well. RESULTS: At baseline, the release of 91.7% (22 of 24 total) of pituitary tropic hormones was impaired, but 59.1% (13 of 22) had normalized by the last follow-up. Male gender, acute onset mode, and normal baseline prolactin level seemed to be the factors that favored tropic hormone normalization, whereas surgical operation was not. Two patients received provocative test suggesting decreased reserves of both somatotrophin and prolactin or only somatotrophin. Only 1 patient suffered from permanent diabetes insipidus. CONCLUSION: The production of almost all pituitary tropic hormones was impaired with PA in the present study, but production of nearly 60% percent of the hormones normalized during follow-up of >1 year. A chronic abscess state may be the most important factor associated with permanent hormone deficiency.


Assuntos
Abscesso/fisiopatologia , Doenças da Hipófise/fisiopatologia , Hipófise/fisiopatologia , Abscesso/terapia , Hormônio Adrenocorticotrópico/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Doenças da Hipófise/terapia , Hormônios Hipofisários/biossíntese , Estudos Retrospectivos
16.
Retina ; 35(10): 2137-46, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25978732

RESUMO

PURPOSE: To describe the risk factors, clinical course, ancillary test findings, treatment strategies, and visual outcomes of a series of patients with choroidal abscesses caused by endogenous Nocardia. METHODS: This retrospective, consecutive noncomparative case series included all patients with Nocardia ocular infections at 3 tertiary medical centers over the past 20 years. RESULTS: Five eyes in 5 patients were identified with choroidal abscesses because of Nocardia. All patients were immunocompromised: one suffered from AIDS and four had autoimmune disorders. Three of the 5 patients (60%) underwent systemic evaluation, and in all 3, nonocular nocardiosis was identified. Four patients (80%) underwent diagnostic ophthalmic surgery and received systemic and intravitreal antibiotics. The final patient deferred these interventions. Outcomes at the last follow-up examination were 20/25, 1/200, hand motion at 1 foot, and 2 patients underwent enucleation. Mean follow-up (± standard deviation) was 159 (± 103) days. CONCLUSION: Immunosuppression is the most significant risk factor for developing Nocardia choroidal abscesses. Definitive diagnosis generally requires subretinal biopsy, which is also critical to implementing appropriate antibiotic therapy.


Assuntos
Abscesso/microbiologia , Antibacterianos/uso terapêutico , Doenças da Coroide/microbiologia , Infecções Oculares Bacterianas/microbiologia , Nocardiose/microbiologia , Procedimentos Cirúrgicos Oftalmológicos , Acuidade Visual/fisiologia , Abscesso/fisiopatologia , Abscesso/terapia , Idoso , Doenças da Coroide/fisiopatologia , Doenças da Coroide/terapia , Terapia Combinada , Enucleação Ocular , Infecções Oculares Bacterianas/fisiopatologia , Infecções Oculares Bacterianas/terapia , Feminino , Humanos , Hospedeiro Imunocomprometido , Injeções Intravítreas , Masculino , Pessoa de Meia-Idade , Nocardiose/fisiopatologia , Nocardiose/terapia , Estudos Retrospectivos , Fatores de Risco , Adulto Jovem
18.
Cell Microbiol ; 15(6): 891-909, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23217115

RESUMO

Staphylococcus (S.) aureus is a frequent cause of severe skin infections. The ability to control the infection is largely dependent on the rapid recruitment of neutrophils (PMN). To gain more insight into the dynamics of PMN migration and host-pathogen interactions in vivo, we used intravital two-photon (2-P) microscopy to visualize S. aureus skin infections in the mouse. Reporter S. aureus strains expressing fluorescent proteins were developed, which allowed for detection of the bacteria in vivo. By employing LysM-EGFP mice to visualize PMN, we observed the rapid appearance of PMN in the extravascular space of the dermis and their directed movement towards the focus of infection, which led to the delineation of an abscess within 1 day. Moreover, tracking of transferred labelled bone-marrow neutrophils showed that PMN localization to the site of infection is dependent on the presence of G-protein-coupled receptors on the PMN, whereas Interleukin-1 receptor was required on host cells other than PMN. Furthermore, the S. aureus complement inhibitor Ecb could block PMN accumulation at thesite of infection. Our results establish that 2-P microscopy is a powerful tool to investigate the orchestration of the immune cells, S. aureus location and gene expression in vivo on a single cell level.


Assuntos
Abscesso/patologia , Interações Hospedeiro-Patógeno/fisiologia , Microscopia/métodos , Fótons , Infecções Cutâneas Estafilocócicas/patologia , Staphylococcus aureus/fisiologia , Abscesso/fisiopatologia , Animais , Modelos Animais de Doenças , Corantes Fluorescentes , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Infiltração de Neutrófilos/fisiologia , Neutrófilos/patologia , Neutrófilos/fisiologia , Receptores de Interleucina-1/deficiência , Receptores de Interleucina-1/genética , Receptores de Interleucina-1/fisiologia , Transdução de Sinais/fisiologia , Pele/microbiologia , Pele/patologia , Pele/fisiopatologia , Infecções Cutâneas Estafilocócicas/fisiopatologia , Staphylococcus aureus/patogenicidade
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