3
|
Xie H, Fang Q, Zhang D. Flow-through flap with wrist epithelial branch of ulnar artery for repair of finger soft tissue defect: a case series. Am J Transl Res 2021; 13:9826-9830. [PMID: 34540117 PMCID: PMC8430115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 05/12/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVE To evaluate the surgical technique and the efficacy of flow-through flap with a wrist epithelial branch of the ulnar artery to repair a finger soft tissue defect. METHODS Between June 2015 and December 2017, 12 cases of soft tissue defects of fingers and injured digital artery were repaired by flow-through flap with wrist epithelial branch of the ulnar artery, including 7 males and 5 females (age range: 18-45 years old, average age: 23.6 years old). The causes of injury included electric saw injury in 7 cases, and machine crush injury in 5 cases. 5 cases were combined with tendon injury, 4 cases with fracture, 12 cases with vessel injury and 2 cases with nerve injury. The area range of the flap was 3.0 cm ×1.8 cm to 6.0 cm ×3.0 cm. The length of the pedicles of the flaps ranged from 2.3 cm to 4.7 cm, with an average length of 3.7 cm. The donor sites were sutured directly in 10 cases, and 2 cases were repaired with a full-thickness skin graft from the ilioinguinal region. Flow-through anastomoses of the distal and proximal end of the wrist epithelial branch of the ulnar artery to the distal and proximal end of the digital artery were created, so as to connect the vessels and reach the physiologic state of blood supply. RESULTS All flaps and skin grafts survived after operation, and all wounds healed at I phase. All patients were followed up 6-12 months (mean: 9 months). The flaps exhibited smooth appearance and soft texture, similar to that of the normal surrounding skin. At last follow-up, the two-point distance of flaps was 9-15 mm (mean: 11 mm). According to the assessment of upper limb function issued by the Hand Surgery Society of Chinese Medical Association, the hand function was excellent in 10 cases, and good in 2 cases. The ulnar wrist donor areas only had linear scar. CONCLUSION Flow-through flap with wrist epithelial branch of ulnar artery exhibits strength in a concealed donor site, reliable blood supply, and simple operation. Flow-through method can be used to repair a broken or defective digital artery in I stage. It is a good method to repair a soft tissue defect of fingers.
Collapse
Affiliation(s)
- Haobo Xie
- Linyi Third People's Hospital Linyi, China
| | | | | |
Collapse
|
4
|
Silva G, Sales-Dias J, Casal D, Alves S, Domenici G, Barreto C, Matos C, Lemos AR, Matias AT, Kucheryava K, Ferreira A, Moita MR, Braga S, Brito C, Cabral MG, Casalou C, Barral DC, Sousa PMF, Videira PA, Bandeiras TM, Barbas A. Development of Dl1.72, a Novel Anti-DLL1 Antibody with Anti-Tumor Efficacy against Estrogen Receptor-Positive Breast Cancer. Cancers (Basel) 2021; 13:cancers13164074. [PMID: 34439228 PMCID: PMC8392387 DOI: 10.3390/cancers13164074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/05/2021] [Accepted: 08/11/2021] [Indexed: 01/04/2023] Open
Abstract
Simple Summary Over 70% of breast cancers (BCs) are estrogen receptor-positive (ER+). The development of endocrine therapy has considerably improved patient outcomes. However, there is a clinical need for novel effective therapies against ER+ BCs, since many of these do not respond to standard therapy, and more than one-third of responders acquire resistance, experience relapse and metastasize. The Notch ligand Delta-like 1 (DLL1) is a key player in ER+ BC development and aggressiveness. Contrary to complete Notch pharmacological inhibitors, antibody-targeting of individual Notch components is expected to have superior therapeutic efficacy and be better tolerated. In this study, we developed and characterized a novel specific anti-DLL1 antibody with efficacy in inhibiting BC cell proliferation, mammosphere formation and angiogenesis, as well as anti-tumor and anti-metastatic efficacy in an ER+ BC mouse model without side effects. Thus, our data suggest that this anti-DLL1 antibody is a promising candidate for ER+ BC treatment. Abstract The Notch-signaling ligand DLL1 has emerged as an important player and promising therapeutic target in breast cancer (BC). DLL1-induced Notch activation promotes tumor cell proliferation, survival, migration, angiogenesis and BC stem cell maintenance. In BC, DLL1 overexpression is associated with poor prognosis, particularly in estrogen receptor-positive (ER+) subtypes. Directed therapy in early and advanced BC has dramatically changed the natural course of ER+ BC; however, relapse is a major clinical issue, and new therapeutic strategies are needed. Here, we report the development and characterization of a novel monoclonal antibody specific to DLL1. Using phage display technology, we selected an anti-DLL1 antibody fragment, which was converted into a full human IgG1 (Dl1.72). The Dl1.72 antibody exhibited DLL1 specificity and affinity in the low nanomolar range and significantly impaired DLL1-Notch signaling and expression of Notch target genes in ER+ BC cells. Functionally, in vitro treatment with Dl1.72 reduced MCF-7 cell proliferation, migration, mammosphere formation and endothelial tube formation. In vivo, Dl1.72 significantly inhibited tumor growth, reducing both tumor cell proliferation and liver metastases in a xenograft mouse model, without apparent toxicity. These findings suggest that anti-DLL1 Dl1.72 could be an attractive agent against ER+ BC, warranting further preclinical investigation.
Collapse
Affiliation(s)
- Gabriela Silva
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; (J.S.-D.); (G.D.); (C.B.); (C.M.); (A.R.L.); (K.K.); (M.R.M.); (C.B.); (P.M.F.S.); (T.M.B.); (A.B.)
- Correspondence: ; Tel.: +351-214-469-419
| | - Joana Sales-Dias
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; (J.S.-D.); (G.D.); (C.B.); (C.M.); (A.R.L.); (K.K.); (M.R.M.); (C.B.); (P.M.F.S.); (T.M.B.); (A.B.)
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Diogo Casal
- Departamento de Anatomia, NOVA Medical School (NMS), Universidade NOVA de Lisboa, 1150-082 Lisbon, Portugal; (D.C.); (S.A.)
- iNOVA4Health, CEDOC, NOVA Medical School (NMS), Universidade NOVA de Lisboa, 1150-082 Lisbon, Portugal; (A.T.M.); (A.F.); (S.B.); (M.G.C.); (C.C.); (D.C.B.)
| | - Sara Alves
- Departamento de Anatomia, NOVA Medical School (NMS), Universidade NOVA de Lisboa, 1150-082 Lisbon, Portugal; (D.C.); (S.A.)
- Serviço de Anatomia Patológica, Centro Hospitalar de Lisboa Central-Hospital de São José, 1150-199 Lisbon, Portugal
| | - Giacomo Domenici
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; (J.S.-D.); (G.D.); (C.B.); (C.M.); (A.R.L.); (K.K.); (M.R.M.); (C.B.); (P.M.F.S.); (T.M.B.); (A.B.)
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Clara Barreto
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; (J.S.-D.); (G.D.); (C.B.); (C.M.); (A.R.L.); (K.K.); (M.R.M.); (C.B.); (P.M.F.S.); (T.M.B.); (A.B.)
| | - Carolina Matos
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; (J.S.-D.); (G.D.); (C.B.); (C.M.); (A.R.L.); (K.K.); (M.R.M.); (C.B.); (P.M.F.S.); (T.M.B.); (A.B.)
| | - Ana R. Lemos
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; (J.S.-D.); (G.D.); (C.B.); (C.M.); (A.R.L.); (K.K.); (M.R.M.); (C.B.); (P.M.F.S.); (T.M.B.); (A.B.)
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Ana T. Matias
- iNOVA4Health, CEDOC, NOVA Medical School (NMS), Universidade NOVA de Lisboa, 1150-082 Lisbon, Portugal; (A.T.M.); (A.F.); (S.B.); (M.G.C.); (C.C.); (D.C.B.)
| | - Khrystyna Kucheryava
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; (J.S.-D.); (G.D.); (C.B.); (C.M.); (A.R.L.); (K.K.); (M.R.M.); (C.B.); (P.M.F.S.); (T.M.B.); (A.B.)
| | - Andreia Ferreira
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; (J.S.-D.); (G.D.); (C.B.); (C.M.); (A.R.L.); (K.K.); (M.R.M.); (C.B.); (P.M.F.S.); (T.M.B.); (A.B.)
| | - Maria Raquel Moita
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; (J.S.-D.); (G.D.); (C.B.); (C.M.); (A.R.L.); (K.K.); (M.R.M.); (C.B.); (P.M.F.S.); (T.M.B.); (A.B.)
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Sofia Braga
- iNOVA4Health, CEDOC, NOVA Medical School (NMS), Universidade NOVA de Lisboa, 1150-082 Lisbon, Portugal; (A.T.M.); (A.F.); (S.B.); (M.G.C.); (C.C.); (D.C.B.)
- Unidade de Mama, Instituto CUF de Oncologia, 1998-018 Lisbon, Portugal
| | - Catarina Brito
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; (J.S.-D.); (G.D.); (C.B.); (C.M.); (A.R.L.); (K.K.); (M.R.M.); (C.B.); (P.M.F.S.); (T.M.B.); (A.B.)
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - M. Guadalupe Cabral
- iNOVA4Health, CEDOC, NOVA Medical School (NMS), Universidade NOVA de Lisboa, 1150-082 Lisbon, Portugal; (A.T.M.); (A.F.); (S.B.); (M.G.C.); (C.C.); (D.C.B.)
| | - Cristina Casalou
- iNOVA4Health, CEDOC, NOVA Medical School (NMS), Universidade NOVA de Lisboa, 1150-082 Lisbon, Portugal; (A.T.M.); (A.F.); (S.B.); (M.G.C.); (C.C.); (D.C.B.)
| | - Duarte C. Barral
- iNOVA4Health, CEDOC, NOVA Medical School (NMS), Universidade NOVA de Lisboa, 1150-082 Lisbon, Portugal; (A.T.M.); (A.F.); (S.B.); (M.G.C.); (C.C.); (D.C.B.)
| | - Pedro M. F. Sousa
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; (J.S.-D.); (G.D.); (C.B.); (C.M.); (A.R.L.); (K.K.); (M.R.M.); (C.B.); (P.M.F.S.); (T.M.B.); (A.B.)
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Paula A. Videira
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal;
| | - Tiago M. Bandeiras
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; (J.S.-D.); (G.D.); (C.B.); (C.M.); (A.R.L.); (K.K.); (M.R.M.); (C.B.); (P.M.F.S.); (T.M.B.); (A.B.)
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Ana Barbas
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal; (J.S.-D.); (G.D.); (C.B.); (C.M.); (A.R.L.); (K.K.); (M.R.M.); (C.B.); (P.M.F.S.); (T.M.B.); (A.B.)
| |
Collapse
|
6
|
Bobrov AG, Getnet D, Swierczewski B, Jacobs A, Medina-Rojas M, Tyner S, Watters C, Antonic V. Evaluation of Pseudomonas aeruginosa pathogenesis and therapeutics in military-relevant animal infection models. APMIS 2021; 130:436-457. [PMID: 34132418 DOI: 10.1111/apm.13119] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 01/21/2021] [Indexed: 01/02/2023]
Abstract
Modern combat-related injuries are often associated with acute polytrauma. As a consequence of severe combat-related injuries, a dysregulated immune response results in serious infectious complications. The gram-negative bacterium Pseudomonas aeruginosa is an opportunistic pathogen that often causes life-threatening bloodstream, lung, bone, urinary tract, and wound infections following combat-related injuries. The rise in the number of multidrug-resistant P. aeruginosa strains has elevated its importance to civilian clinicians and military medicine. Development of novel therapeutics and treatment options for P. aeruginosa infections is urgently needed. During the process of drug discovery and therapeutic testing, in vivo testing in animal models is a critical step in the bench-to-bedside approach, and required for Food and Drug Administration approval. Here, we review current and past literature with a focus on combat injury-relevant animal models often used to understand infection development, the interplay between P. aeruginosa and the host, and evaluation of novel treatments. Specifically, this review focuses on the following animal infection models: wound, burn, bone, lung, urinary tract, foreign body, and sepsis.
Collapse
Affiliation(s)
- Alexander G Bobrov
- Wound Infections Department, Bacterial Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Derese Getnet
- Wound Infections Department, Bacterial Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Brett Swierczewski
- Wound Infections Department, Bacterial Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Anna Jacobs
- Wound Infections Department, Bacterial Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Maria Medina-Rojas
- Wound Infections Department, Bacterial Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Stuart Tyner
- US Army Medical Research and Development Command Military Infectious Diseases Research Program, Frederick, Maryland, USA
| | - Chase Watters
- Naval Medical Research Unit-3, Ghana Detachment, Accra, Ghana
| | - Vlado Antonic
- Wound Infections Department, Bacterial Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| |
Collapse
|