Podiatry Commons^™

Lyopreserved Amniotic Membrane Is Cellularly And Clinically Similar To Cryopreserved Construct For Treating Foot Ulcers, Kathryn E. Davis, Amanda L. Killeen, David Farrar, Katherine M. Raspovic, Zachary D. Berriman-Rozen, Matthew Malone, Lawrence A. Lavery

School of Podiatric Medicine Publications

We compared cellular viability between cryopreserved and lyopreserved amniotic membranes and clinical outcomes of the lyopreserved construct in a prospective cohort study of 40 patients with neuropathic foot ulcers. Patients received weekly application of lyopreserved membrane for 12 weeks with standard weekly debridement and offloading. We evaluated the proportion of foot ulcers that closed, time to closure, closure trajectories, and infection during therapy. We used chi-square tests for dichotomous variables and independent t-tests for continuous variables with an alpha of α = .10. Cellular viability was equivalent between cryo- and lyopreserved amniotic tissues. Clinically, 48% of subjects' wounds closed in …

Length Of Stay And Hospital Cost Comparison In Hind Foot And Ankle Surgery On Patients With Anxiety And Depression Versus Those Without Psychopathology Diagnoses., Christopher J. Betrus, Sham J. Persaud, Stephanie N. Campbell, Alan R. Catanzariti

School of Podiatric Medicine Publications

To evaluate if patients with depression and/or anxiety have more post-operative pain, necessitating more pain medication and requiring longer hospital stays, corresponding to increased costs following elective hind foot and/or ankle surgery.

Through comparing the LOS between our study group and our control group, a diagnosis of depression and/or anxiety did not seem to extend the length of time admitted to the hospital. We found, as expected, the average VAS pain score was increased in the study group, which has been previously seen in the available literature.

Does The Start Of Dialysis Initiate A Period Of Increased Risk Of Ulceration Or Amputation?, Lawrence A. Lavery, David C. Lavery, Nathan A. Hunt, Javier La Fontaine, Ryan D. Lavery

School of Podiatric Medicine Publications

Background: Dialysis therapy is associated with an increased incidence of lower-extremity wounds and amputations. We compared the incidence of foot ulcers and amputations before and after the start of dialysis.

Methods: We evaluated 150 consecutive diabetic patients receiving dialysis and compared the incidence of foot complications 30 months before and after initiation of hemodialysis. We used claims data for diabetes, ulceration, and dialysis and abstracted medical records to verify diagnoses and dates of ulcers and amputations. We compared initial and cumulative ulcer/amputation incidence to account for multiple events in the same person over time. We used the same formula to …

Characterization Of The Protective Role Of Regulatory T Cells In Experimental Periapical Lesions Development And Its Chemoattraction Manipulation As A Therapeutic Tool, Carolina Favaro Francisconi, Andreia Espindola Vieira, Cláudia Cristina Biguetti, Andrew J. Glowacki, Ana Paula Favaro Trombone, Ariadne Letra, Renato Menezes Silva, Charles S. Sfeir, Steven R. Little, Gustavo P. Garlet

School of Podiatric Medicine Publications

Introduction

The pathogenesis of periapical lesions is determined by the balance between host pro-inflammatory immune response and counteracting anti-inflammatory and reparative responses, which include regulatory T cells (Tregs) as potential immunoregulatory agents. In this study, we investigated (in a cause-and-effect manner) the involvement of CCL22-CCR4 axis in Tregs migration to the periapical area and the role of Tregs in the determination of outcomes in periapical lesions.

Methods

Periapical lesions were induced in C57Bl/6 (WT) and CCR4KO mice (pulp exposure and bacterial inoculation), and treated with anti-GITR to inhibit Tregs function or alternatively with CCL22-releasing, PLGA particles to induce site-specific migration …

Intramembranous Bone Healing Process Subsequent To Tooth Extraction In Mice: Micro-Computed Tomography, Histomorphometric And Molecular Characterization, Andreia Espindola Vieira, Carlos Eduardo Repeke, Samuel De Barros Ferreira Junior, Priscila Maria Colavite, Cláudia Cristina Biguetti, Rodrigo Cardoso Oliveira, Gerson Francisco Assis, Rumio Taga, Ana Paula Favaro Trombone, Gustavo P. Garlet

School of Podiatric Medicine Publications

Bone tissue has a significant potential for healing, which involves a significant the interplay between bone and immune cells. While fracture healing represents a useful model to investigate endochondral bone healing, intramembranous bone healing models are yet to be developed and characterized. In this study, a micro-computed tomography, histomorphometric and molecular (RealTimePCRarray) characterization of post tooth-extraction alveolar bone healing was performed on C57Bl/6 WT mice. After the initial clot dominance (0 h), the development of a provisional immature granulation tissue is evident (7 d), characterized by marked cell proliferation, angiogenesis and inflammatory cells infiltration; associated with peaks of growth factors …

Analysis Of Multiple Cytokine Polymorphisms In Individuals With Untreated Deep Carious Lesions Reveals Il1b (Rs1143643) As A Susceptibility Factor For Periapical Lesions Development, Alisa Dill, Ariadne Letra, Letıcia Chaves De Souza, Mamatha Yadlapati, Cláudia Cristina Biguetti, Gustavo P. Garlet, Alexandre R. Vieira, Renato Menezes Silva

School of Podiatric Medicine Publications

Introduction

It has been proposed that individual genetic predisposition may contribute to persistent apical periodontitis. Cytokines are associated with levels of inflammation and are involved in caries, pulpal, and periapical tissue destruction. We hypothesized that polymorphisms in cytokine genes may contribute to an individual’s increased susceptibility to apical tissue destruction in response to deep carious lesions.

Methods

Subjects with deep carious lesions, with or without periapical lesions (≥ 3 mm) were recruited at the University of Pittsburgh and the University of Texas at Houston. Genomic DNA samples of 316 patients were sorted into 2 groups: 136 cases with deep carious …

Simultaneous Analysis Of T Helper Subsets (Th1, Th2, Th9, Th17, Th22, Tfh, Tr1 And Tregs) Markers Expression In Periapical Lesions Reveals Multiple Cytokine Clusters Accountable For Lesions Activity And Inactivity Status, Ana Claudia Araujo-Pires, Carolina Favaro Francisconi, Cláudia Cristina Biguetti, Franco Cavalla, Andreza Maria Fabio Aranha, Ariadne Letra, Ana Paula Favaro Trombone, Marcelo Faveri, Renato Menezes Silva, Gustavo P. Garlet

School of Podiatric Medicine Publications

Previous studies demonstrate that the balance between pro- and anti-inflammatory mediators determines the stable or progressive nature of periapical granulomas by modulating the balance of the osteoclastogenic factor RANKL and its antagonist OPG. However, the cytokine networks operating in the development of periapical lesions are quite more complex than what the simple pro- versus anti-inflammatory mediators' paradigm suggests. Here we simultaneously investigated the patterns of Th1, Th2, Th9, Th17, Th22, Thf, Tr1 and Tregs cytokines/markers expression in human periapical granulomas.

Methods:

The expression of TNF-α, IFN-γ, IL-17A, IL23, IL21, IL-33, IL-10, IL-4, IL-9, IL-22, FOXp3 markers (via RealTimePCR array) was …