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  1. Article: Does Vitamin D Deficiency Really Increase the Risk of Post-surgical Hypoparathyroidism?

    Tabanera, José Alberto Vilar / Gómez, Joaquín / Brabyn, Philip / Puerta, Ana / Barranquero, Alberto González / Cebrián, José María

    Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India

    2023  Volume 75, Issue 3, Page(s) 1719–1723

    Abstract: Purpose: Postoperative hypoparathyroidism is the most frequent complication after total thyroidectomy. The identification of preoperative predictors could be helpful to identify patients at risk. The aim of this study is to determine if preoperative ... ...

    Abstract Purpose: Postoperative hypoparathyroidism is the most frequent complication after total thyroidectomy. The identification of preoperative predictors could be helpful to identify patients at risk. The aim of this study is to determine if preoperative vitamin D levels are related to transient, protracted, and permanent hypoparathyroidism.
    Method: A prospective, observational study that includes 100 patients who underwent total thyroidectomy.
    Results: Transient hypoparathyroidism was present in 42% of patients, 11% developed protracted hypoparathyroidism and 5% permanent hypoparathyroidism. The median preoperative Vitamin D levels were higher in patients who developed transient hypoparathyroidism than in patients without this complication (24 ng/mL [RIQ 13-31] vs. 17 ng/mL [RIQ 10-24]; p = 0.024). Patients with preoperative vitamin D levels below 20 ng/mL had a lower percentage of transient hypoparathyroidism (31.4% vs. 53.1%; p = 0.028). The prevalence of protracted and permanent hypoparathyroidism in both groups was similar. Patients with preoperative vitamin D levels lower than 20 pg/mL had higher median PTH levels 24 h after surgery, (37.7 ± 28.2 pg/ml vs. 23.6 ± 18.6 pg/ml; p = 0.037), and suffered a lower postoperative PTH decline (46.2 ± 35.4% vs. 61 ± 29%; p = 0.026).
    Conclusions: Patients with vitamin D deficiency had a lower transient hypoparathyroidism rate, higher median PTH levels 24 h after surgery and a lower postoperative PTH decline. We found no association between preoperative vitamin D and the development of protracted or permanent hypoparathyroidism.
    Language English
    Publishing date 2023-03-29
    Publishing country India
    Document type Journal Article
    ZDB-ID 1471137-0
    ISSN 0973-7707 ; 2231-3796 ; 0019-5421
    ISSN (online) 0973-7707
    ISSN 2231-3796 ; 0019-5421
    DOI 10.1007/s12070-023-03699-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Laparoscopic D2 lymphadenectomy with preservation of an aberrant left hepatic artery.

    Puerta, Ana / Cuadrado, Marta / Vilar, José Alberto / Priego, Pablo

    Cirugia espanola

    2021  Volume 99, Issue 7, Page(s) 539

    MeSH term(s) Hepatic Artery/surgery ; Humans ; Laparoscopy ; Lymph Node Excision
    Language English
    Publishing date 2021-07-06
    Publishing country Spain
    Document type Video-Audio Media
    ISSN 2173-5077
    ISSN (online) 2173-5077
    DOI 10.1016/j.cireng.2021.06.010
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Nonviral overexpression of Scleraxis or Mohawk drives reprogramming of degenerate human annulus fibrosus cells from a diseased to a healthy phenotype.

    Tang, Shirley / Gantt, Connor / Salazar Puerta, Ana / Bodine, Lucy / Khan, Safdar / Higuita-Castro, Natalia / Purmessur, Devina

    JOR spine

    2023  Volume 6, Issue 3, Page(s) e1270

    Abstract: Background: Intervertebral disc (IVD) degeneration is a major contributor to low back pain (LBP), yet there are no clinical therapies targeting the underlying pathology. The annulus fibrosus (AF) plays a critical role in maintaining IVD structure/ ... ...

    Abstract Background: Intervertebral disc (IVD) degeneration is a major contributor to low back pain (LBP), yet there are no clinical therapies targeting the underlying pathology. The annulus fibrosus (AF) plays a critical role in maintaining IVD structure/function and undergoes degenerative changes such as matrix catabolism and inflammation. Thus, therapies targeting the AF are crucial to fully restore IVD function. Previously, we have shown nonviral delivery of transcription factors to push diseased nucleus pulposus cells to a healthy phenotype. As a next step in a proof-of-concept study, we report the use of Scleraxis (
    Methods: MKX
    Results: AF cells demonstrated a fibroblastic phenotype posttreatment. Moreover, transfection of
    Conclusions: This exploratory study demonstrates the potential of
    Language English
    Publishing date 2023-06-27
    Publishing country United States
    Document type Journal Article
    ISSN 2572-1143
    ISSN (online) 2572-1143
    DOI 10.1002/jsp2.1270
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  4. Article ; Online: Design of Optimal Coils for Deep Transcranial Magnetic Stimulation.

    Vilchez Membrilla, Jose Antonio / Sanchez, Clemente Cobos / Montijano, Carmen Torres / Valerga Puerta, Ana Pilar / Pantoja, Mario Fernandez

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

    2022  Volume 2022, Page(s) 3447–3450

    Abstract: In this work, a stream function inverse boundary element method (IBEM) has been used for designing different deep transcranial magnetic stimulation (dTMS)coils to activate the prefrontal cortex and the temporal lobe have been set as the target regions. ... ...

    Abstract In this work, a stream function inverse boundary element method (IBEM) has been used for designing different deep transcranial magnetic stimulation (dTMS)coils to activate the prefrontal cortex and the temporal lobe have been set as the target regions. In addition, the performances of these coils have been described and the electric field induced by them has been obtained by using a computational forward technique. These results show that the stream function IBEM is an ideal approach to design optimal dTMS coils capable of producing deep stimulation in the target brain regions. Clinical relevance - The design problem proposed here can be used to produce efficient dTMS stimulators for neurological disorders, which can overcome some of the currently existing limitations of the most common devices employed in TMS.
    MeSH term(s) Brain/physiology ; Electricity ; Equipment Design ; Humans ; Nervous System Diseases ; Transcranial Magnetic Stimulation/methods
    Language English
    Publishing date 2022-09-10
    Publishing country United States
    Document type Journal Article
    ISSN 2694-0604
    ISSN (online) 2694-0604
    DOI 10.1109/EMBC48229.2022.9871354
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Tribo-corrosive behavior of additive manufactured parts for orthopaedic applications.

    Malik, Abrar / Rouf, Saquib / Ul Haq, Mir Irfan / Raina, Ankush / Valerga Puerta, Ana Pilar / Sagbas, Binnur / Ruggiero, Alessandro

    Journal of orthopaedics

    2022  Volume 34, Page(s) 49–60

    Abstract: Background: Additive manufacturing (AM) being an integral component of the production offers a wide variety of applications in the production of different components. The medical industry after the introduction of Additive Manufacturing has resulted in ... ...

    Abstract Background: Additive manufacturing (AM) being an integral component of the production offers a wide variety of applications in the production of different components. The medical industry after the introduction of Additive Manufacturing has resulted in several advancements. The production of intricate patient-specific implants is one of such advancements which greatly assist a surgeon during a surgery. Orthopedic implants apart from possessing good mechanical strength are also expected to exhibit good tribological and corrosion behavior. As a result, the development of various orthopaedic implants and tools has become simple with the use of additive manufacturing.
    Objectives and rationale: In the current paper an effort has been made to discuss actual scientific knowledge on the tribo-corrosive behavior of additive manufactured parts for orthopedic applications. Different studies dealing with the mechanisms of lubrication and friction in synovial joints have also been considered. A special focus has also been laid down to study the corrosive effect of implants on the human body. A section dedicated to texturing of orthopedic implants has also been provided. The paper further elaborates the different research challenges and issues related to the use of additive manufacturing for the production of optimized orthopedic implants.
    Conclusion: The study revealed that additive manufacturing has greatly aided in the manufacture of different orthopaedic implants with enhanced properties. However, a detailed study of the effect of processes like friction, wear, lubrication and corrosion in these implants needs to be done. The performance of these implants in the presence of various synovial fluids also needs to be addressed. However, the lack of more biocompatible materials, scalability and cost issues hinder the widespread use of AM in the different orthopaedic applications.
    Language English
    Publishing date 2022-08-10
    Publishing country India
    Document type Journal Article
    ZDB-ID 2240839-3
    ISSN 0972-978X
    ISSN 0972-978X
    DOI 10.1016/j.jor.2022.08.006
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  6. Article: Cytomegalovirus: associated ischemic colitis in an immunocompetent patient.

    Puerta, Ana / Priego, Pablo / Galindo, Julio

    Revista espanola de enfermedades digestivas : organo oficial de la Sociedad Espanola de Patologia Digestiva

    2017  Volume 109, Issue 9, Page(s) 671

    Abstract: Cytomegalovirus (CMV) colitis is a common entity in immunocompromised patients, being rare among immunocompetent individuals. In addition, its association with ischemic colitis is unusual in both groups of population. Rectal bleeding might occur in both ... ...

    Abstract Cytomegalovirus (CMV) colitis is a common entity in immunocompromised patients, being rare among immunocompetent individuals. In addition, its association with ischemic colitis is unusual in both groups of population. Rectal bleeding might occur in both entities and, occasionally, urgent surgical treatment may be required, associating high morbility rates. We report one case of cytomegalovirus colitis associated with severe ischemic colitis in a non- immunocompromised patient with favourable response to conservative management with antiviral therapy.
    Language English
    Publishing date 2017-09
    Publishing country Spain
    Document type Journal Article
    ZDB-ID 1070381-0
    ISSN 1130-0108 ; 0212-7512
    ISSN 1130-0108 ; 0212-7512
    DOI 10.17235/reed.2017.4937/2017
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  7. Article ; Online: Leiomyosarcoma of the inferior vena cava.

    Puerta, Ana / Vilar, José Alberto / Núñez, Jordi / López Hervás, Pedro / Nuño, Javier

    Cirugia espanola

    2019  Volume 98, Issue 4, Page(s) 243–245

    Title translation Leiomiosarcoma de vena cava inferior.
    MeSH term(s) Female ; Humans ; Leiomyosarcoma/diagnostic imaging ; Leiomyosarcoma/surgery ; Middle Aged ; Postoperative Complications/surgery ; Reoperation ; Tomography, X-Ray Computed ; Vascular Neoplasms/diagnostic imaging ; Vascular Neoplasms/surgery ; Vena Cava, Inferior/diagnostic imaging ; Vena Cava, Inferior/surgery
    Language Spanish
    Publishing date 2019-08-21
    Publishing country Spain
    Document type Case Reports
    ISSN 2173-5077
    ISSN (online) 2173-5077
    DOI 10.1016/j.ciresp.2019.07.007
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  8. Article ; Online: Cystic Duct Bile Leak in Graft: An Unexpected Origin for Choleperitoneum After Liver Transplant.

    Puerta, Ana / Núñez, Jordi / Vilar, José Alberto / Hervás, Pedro López / Nuño, Javier

    Experimental and clinical transplantation : official journal of the Middle East Society for Organ Transplantation

    2019  Volume 18, Issue 5, Page(s) 638–640

    Abstract: From the beginning of liver transplant implementation, biliary anastomosis has been considered its weakness. An anastomotic bile leak is the most frequent cause of bile in the peritoneum (choleperitoneum) after liver transplant but not the only one. Here, ...

    Abstract From the beginning of liver transplant implementation, biliary anastomosis has been considered its weakness. An anastomotic bile leak is the most frequent cause of bile in the peritoneum (choleperitoneum) after liver transplant but not the only one. Here, we report a 58-year-old man with hepatitis C virus-related cirrhosis who had orthotopic liver transplant due to presence of hepatocellular carcinoma.During the immediate postoperative period, bile leakwas diagnosed on trans-Kehr cholangiography. Contrast extravasation was observed on the graft's cystic duct, and no contrast flow into the native biliary tract was demonstrated. Surgical intervention was required after endoscopic management failure. Bile leak through the cystic duct was repaired, and a Rouxen-Y bilioenteric diversion was performed. Biliary complications can significantly increase morbidity and mortality after liver transplant. Anastomotic bile leaks are the most frequent; however, other locations must not be dismissed as possible origins of leak. It is mandatory to consider underlying hepatic artery complications as thrombosis or stenosis. Treatment will depend on the leak origin, which are most times accessible to endoscopic retrograde cholangiopancreatography. However, other locations and the different treatment options must also be considered. It is also necessary not to forget the influence of bile leaks on biliary stenosis development in the long term and its contribution to increased patient morbidity and mortality.
    MeSH term(s) Anastomotic Leak/diagnostic imaging ; Anastomotic Leak/etiology ; Anastomotic Leak/metabolism ; Anastomotic Leak/surgery ; Bile Acids and Salts/metabolism ; Biliary Tract Surgical Procedures/adverse effects ; Carcinoma, Hepatocellular/diagnosis ; Carcinoma, Hepatocellular/surgery ; Carcinoma, Hepatocellular/virology ; Cystic Duct/diagnostic imaging ; Cystic Duct/surgery ; Hepatitis C/complications ; Hepatitis C/diagnosis ; Humans ; Liver Neoplasms/diagnosis ; Liver Neoplasms/surgery ; Liver Neoplasms/virology ; Liver Transplantation/adverse effects ; Male ; Middle Aged ; Peritoneum/metabolism ; Reoperation ; Treatment Outcome
    Chemical Substances Bile Acids and Salts
    Language English
    Publishing date 2019-10-01
    Publishing country Turkey
    Document type Case Reports
    ZDB-ID 2396778-X
    ISSN 2146-8427 ; 1304-0855
    ISSN (online) 2146-8427
    ISSN 1304-0855
    DOI 10.6002/ect.2019.0118
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  9. Article ; Online: Engineered extracellular vesicle-based gene therapy for the treatment of discogenic back pain.

    Tang, Shirley N / Salazar-Puerta, Ana I / Heimann, Mary K / Kuchynsky, Kyle / Rincon-Benavides, María A / Kordowski, Mia / Gunsch, Gilian / Bodine, Lucy / Diop, Khady / Gantt, Connor / Khan, Safdar / Bratasz, Anna / Kokiko-Cochran, Olga / Fitzgerald, Julie / Laudier, Damien M / Hoyland, Judith A / Walter, Benjamin A / Higuita-Castro, Natalia / Purmessur, Devina

    Biomaterials

    2024  Volume 308, Page(s) 122562

    Abstract: Painful musculoskeletal disorders such as intervertebral disc (IVD) degeneration associated with chronic low back pain (termed "Discogenic back pain", DBP), are a significant socio-economic burden worldwide and contribute to the growing opioid crisis. ... ...

    Abstract Painful musculoskeletal disorders such as intervertebral disc (IVD) degeneration associated with chronic low back pain (termed "Discogenic back pain", DBP), are a significant socio-economic burden worldwide and contribute to the growing opioid crisis. Yet there are very few if any successful interventions that can restore the tissue's structure and function while also addressing the symptomatic pain. Here we have developed a novel non-viral gene therapy, using engineered extracellular vesicles (eEVs) to deliver the developmental transcription factor FOXF1 to the degenerated IVD in an in vivo model. Injured IVDs treated with eEVs loaded with FOXF1 demonstrated robust sex-specific reductions in pain behaviors compared to control groups. Furthermore, significant restoration of IVD structure and function in animals treated with FOXF1 eEVs were observed, with significant increases in disc height, tissue hydration, proteoglycan content, and mechanical properties. This is the first study to successfully restore tissue function while modulating pain behaviors in an animal model of DBP using eEV-based non-viral delivery of transcription factor genes. Such a strategy can be readily translated to other painful musculoskeletal disorders.
    MeSH term(s) Animals ; Extracellular Vesicles/metabolism ; Genetic Therapy/methods ; Female ; Male ; Intervertebral Disc Degeneration/therapy ; Intervertebral Disc Degeneration/genetics ; Forkhead Transcription Factors/metabolism ; Forkhead Transcription Factors/genetics ; Intervertebral Disc/pathology ; Rats, Sprague-Dawley ; Back Pain/therapy ; Back Pain/genetics ; Low Back Pain/therapy
    Chemical Substances Forkhead Transcription Factors
    Language English
    Publishing date 2024-04-01
    Publishing country Netherlands
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 603079-8
    ISSN 1878-5905 ; 0142-9612
    ISSN (online) 1878-5905
    ISSN 0142-9612
    DOI 10.1016/j.biomaterials.2024.122562
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  10. Article: Non-viral Gene Delivery Methods for Bone and Joints.

    Gantenbein, Benjamin / Tang, Shirley / Guerrero, Julien / Higuita-Castro, Natalia / Salazar-Puerta, Ana I / Croft, Andreas S / Gazdhar, Amiq / Purmessur, Devina

    Frontiers in bioengineering and biotechnology

    2020  Volume 8, Page(s) 598466

    Abstract: Viral carrier transport efficiency of gene delivery is high, depending on the type of vector. However, viral delivery poses significant safety concerns such as inefficient/unpredictable reprogramming outcomes, genomic integration, as well as unwarranted ... ...

    Abstract Viral carrier transport efficiency of gene delivery is high, depending on the type of vector. However, viral delivery poses significant safety concerns such as inefficient/unpredictable reprogramming outcomes, genomic integration, as well as unwarranted immune responses and toxicity. Thus, non-viral gene delivery methods are more feasible for translation as these allow safer delivery of genes and can modulate gene expression transiently both
    Language English
    Publishing date 2020-11-19
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2719493-0
    ISSN 2296-4185
    ISSN 2296-4185
    DOI 10.3389/fbioe.2020.598466
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