LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 34

Search options

  1. Article: [ANTERIOR CUTANEOUS NERVE ENTRAPMENT SYNDROME IN THE ABDOMINAL WALL].

    Vardi David, Liron / David, Rami

    Harefuah

    2022  Volume 161, Issue 6, Page(s) 367–370

    Abstract: Introduction: Anterior cutaneous nerve entrapment syndrome (ACNES) is one of the causes of chronic abdominal pain. Symptoms include intense focused chronic abdominal pain, affected by posture changes and exertion. Particularly noticeable are the lack of ...

    Abstract Introduction: Anterior cutaneous nerve entrapment syndrome (ACNES) is one of the causes of chronic abdominal pain. Symptoms include intense focused chronic abdominal pain, affected by posture changes and exertion. Particularly noticeable are the lack of pathological findings in laboratory and imaging tests, from the most basic to the more advanced. Proper diagnosis and appropriate treatment depend on raising the clinical suspicion with typical findings on physical examination. Confirmation of the diagnosis is obtained by significant alleviation of pain following injection of local anesthetics into the maximal tender point. Acceptable treatment includes local injections (local anesthetics and occasionally corticosteroids), radiofrequency neurotomy and, if failed, surgery. Accurate diagnosis and proper treatment result in pain relief in most patients.
    MeSH term(s) Abdominal Pain/diagnosis ; Abdominal Pain/etiology ; Abdominal Pain/therapy ; Abdominal Wall ; Anesthetics, Local/therapeutic use ; Humans ; Nerve Compression Syndromes/surgery ; Nerve Compression Syndromes/therapy ; Pain Management/adverse effects
    Chemical Substances Anesthetics, Local
    Language Hebrew
    Publishing date 2022-06-13
    Publishing country Israel
    Document type Journal Article
    ZDB-ID 953872-0
    ISSN 0017-7768
    ISSN 0017-7768
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Book ; Online: BGP Typo

    David, Liron / Shavitt, Yuval

    A Longitudinal Study and Remedies

    2023  

    Abstract: BGP is the protocol that keeps Internet connected. Operators use it by announcing Address Prefixes (APs), namely IP address blocks, that they own or that they agree to serve as transit for. BGP enables ISPs to devise complex policies to control what AP ... ...

    Abstract BGP is the protocol that keeps Internet connected. Operators use it by announcing Address Prefixes (APs), namely IP address blocks, that they own or that they agree to serve as transit for. BGP enables ISPs to devise complex policies to control what AP announcements to accept (import policy), the route selection, and what AP to announce and to whom (export policy). In addition, BGP is also used to coarse traffic engineering for incoming traffic via the prepend mechanism. However, there are no wide-spread good tools for managing BGP and much of the complex configuration is done by home-brewed scripts or simply by manually configuring router with bare-bone terminal interface. This process generates many configuration mistakes. In this study, we examine typos that propagates in BGP announcements and can be found in many of the public databases. We classify them and quantify their presence, and surprisingly found tens of ASNs and hundreds of APs affected by typos on any given time. In addition, we suggest a simple algorithm that can detect (and clean) most of them with almost no false positives.
    Keywords Computer Science - Networking and Internet Architecture
    Subject code 303
    Publishing date 2023-11-01
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  3. Article: [ILIOHYPOGASTRIC NERVE ENTRAPMENT IN A CHILD - A RARE CAUSE FOR CHRONIC ABDOMINAL AND PELVIC PAIN IN CHILDREN].

    Vardi David, Liron / David, Rami

    Harefuah

    2021  Volume 160, Issue 6, Page(s) 346–348

    Abstract: Introduction: Entrapment of the iliohypogastric nerve is a rare cause of abdominal pain in children. We present a case report of a 12 year old girl with abdominal pain following a fall accompanied by nausea, vomiting and odynuria. Thorough investigation ...

    Abstract Introduction: Entrapment of the iliohypogastric nerve is a rare cause of abdominal pain in children. We present a case report of a 12 year old girl with abdominal pain following a fall accompanied by nausea, vomiting and odynuria. Thorough investigation was normal and a non-organic cause was proposed. With no lasting improvement after local analgesic infiltration, a surgical attempt to disconnect sensory innervation was conducted but pain continued. A second surgical exploration was performed. A tear of the external oblique aponeurosis was found, entrapping terminal branches of the iliohypogastric nerve. A complete clinical resolution followed resection of the nerve and repair of the aponeurosis tear. Entrapment of abdominal cutaneous nerves should be considered in cases with chronic abdominal pain accompanied by localized tenderness and various visceral complaints. Normal laboratory and imaging findings are typical.
    MeSH term(s) Abdomen ; Abdominal Muscles ; Abdominal Pain/diagnosis ; Abdominal Pain/etiology ; Child ; Family ; Female ; Humans ; Nerve Compression Syndromes/diagnosis ; Nerve Compression Syndromes/etiology ; Nerve Compression Syndromes/surgery ; Pelvic Pain/diagnosis ; Pelvic Pain/etiology
    Language Hebrew
    Publishing date 2021-06-23
    Publishing country Israel
    Document type Case Reports ; Journal Article
    ZDB-ID 953872-0
    ISSN 0017-7768
    ISSN 0017-7768
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: NINJ1 mediates plasma membrane rupture by cutting and releasing membrane disks.

    David, Liron / Borges, Jazlyn P / Hollingsworth, L Robert / Volchuk, Allen / Jansen, Isabelle / Garlick, Evelyn / Steinberg, Benjamin E / Wu, Hao

    Cell

    2024  Volume 187, Issue 9, Page(s) 2224–2235.e16

    Abstract: The membrane protein NINJ1 mediates plasma membrane rupture in pyroptosis and other lytic cell death pathways. Here, we report the cryo-EM structure of a NINJ1 oligomer segmented from NINJ1 rings. Each NINJ1 subunit comprises amphipathic (⍺1, ⍺2) and ... ...

    Abstract The membrane protein NINJ1 mediates plasma membrane rupture in pyroptosis and other lytic cell death pathways. Here, we report the cryo-EM structure of a NINJ1 oligomer segmented from NINJ1 rings. Each NINJ1 subunit comprises amphipathic (⍺1, ⍺2) and transmembrane (TM) helices (⍺3, ⍺4) and forms a chain of subunits, mainly by the TM helices and ⍺1. ⍺3 and ⍺4 are kinked, and the Gly residues are important for function. The NINJ1 oligomer possesses a concave hydrophobic side that should face the membrane and a convex hydrophilic side formed by ⍺1 and ⍺2, presumably upon activation. This structural observation suggests that NINJ1 can form membrane disks, consistent with membrane fragmentation by recombinant NINJ1. Live-cell and super-resolution imaging uncover ring-like structures on the plasma membrane that are released into the culture supernatant. Released NINJ1 encircles a membrane inside, as shown by lipid staining. Therefore, NINJ1-mediated membrane disk formation is different from gasdermin-mediated pore formation, resulting in membrane loss and plasma membrane rupture.
    MeSH term(s) Cell Membrane/metabolism ; Humans ; Cryoelectron Microscopy ; Cell Adhesion Molecules, Neuronal/metabolism ; Cell Adhesion Molecules, Neuronal/chemistry ; Animals ; Mice ; HEK293 Cells ; Pyroptosis ; Models, Molecular ; Membrane Proteins/metabolism ; Membrane Proteins/chemistry ; Phosphate-Binding Proteins/metabolism
    Chemical Substances Cell Adhesion Molecules, Neuronal ; Membrane Proteins ; Phosphate-Binding Proteins
    Language English
    Publishing date 2024-04-12
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 187009-9
    ISSN 1097-4172 ; 0092-8674
    ISSN (online) 1097-4172
    ISSN 0092-8674
    DOI 10.1016/j.cell.2024.03.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Spontaneous labor patterns among women attempting vaginal birth after cesarean delivery.

    Shalev-Ram, Hila / Miller, Netanella / David, Liron / Issakov, Gal / Weinberger, Hila / Biron-Shental, Tal

    The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians

    2022  Volume 35, Issue 25, Page(s) 9325–9330

    Abstract: Objective: This study evaluated spontaneous labor patterns among women achieving a vaginal birth after cesarean (VBAC), without a previous vaginal delivery in relation to nulliparous women.: Methods: This historical cohort study included 422 women ... ...

    Abstract Objective: This study evaluated spontaneous labor patterns among women achieving a vaginal birth after cesarean (VBAC), without a previous vaginal delivery in relation to nulliparous women.
    Methods: This historical cohort study included 422 women attempting VBAC and 150 nulliparas. We examined time intervals for each centimeter of cervical dilation and compared labor progression in 321 women who achieved spontaneous VBAC and 147 nulliparous women achieving a spontaneous vaginal delivery. Epidural anesthesia use, delivery mode, cord arterial pH and 5-minute Apgar score were also compared.
    Findings: Women in the VBAC group compared to nulliparous women had similar durations of first (4-10 cm: 4:22 (00:54-13:10) h vs. 4:47 (1:10-15:10) h,
    Conclusion: Labor patterns among women achieving spontaneous VBAC are similar to those of nulliparous women with spontaneous vaginal deliveries.
    MeSH term(s) Pregnancy ; Female ; Humans ; Vaginal Birth after Cesarean ; Trial of Labor ; Cohort Studies ; Retrospective Studies ; Labor, Obstetric
    Language English
    Publishing date 2022-01-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 2077261-0
    ISSN 1476-4954 ; 1057-0802 ; 1476-7058
    ISSN (online) 1476-4954
    ISSN 1057-0802 ; 1476-7058
    DOI 10.1080/14767058.2022.2031964
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Book ; Online: Online Password Guessability via Multi-Dimensional Rank Estimation

    David, Liron / Wool, Avishai

    2019  

    Abstract: Human-chosen passwords are the a dominant form of authentication systems. Passwords strength estimators are used to help users avoid picking weak passwords by predicting how many attempts a password cracker would need until it finds a given password. In ... ...

    Abstract Human-chosen passwords are the a dominant form of authentication systems. Passwords strength estimators are used to help users avoid picking weak passwords by predicting how many attempts a password cracker would need until it finds a given password. In this paper we propose a novel password strength estimator, called PESrank, which accurately models the behavior of a powerful password cracker. PESrank calculates the rank of a given password in an optimal descending order of likelihood. PESrank estimates a given password's rank in fractions of a second---without actually enumerating the passwords---so it is practical for online use. It also has a training time that is drastically shorter than previous methods. Moreover, PESrank is efficiently tweakable to allow model personalization in fractions of a second, without the need to retrain the model; and it is explainable: it is able to provide information on why the password has its calculated rank, and gives the user insight on how to pick a better password. Our idea is to cast the question of password rank estimation in a probabilistic framework used in side-channel cryptanalysis. We view each password as a point in a $d$-dimensional search space, and learn the probability distribution of each dimension separately. The dimensions represent the base word, plus a dimension for each possible transformation such as adding a suffix or using a capitalization pattern. Using this model, password strength estimation is analogous to side-channel rank estimation. We implemented PERrank in Python and conducted an extensive evaluation study of it. We also integrated it into the registration page of a course at our university. Even with a model based on 905 million passwords, the response time was well under 1 second, with up to a 1-bit accuracy margin between the upper bound and the lower bound on the rank.
    Keywords Computer Science - Cryptography and Security
    Subject code 005
    Publishing date 2019-12-05
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  7. Article: NLRP3 cages revealed by full-length mouse NLRP3 structure control pathway activation

    Andreeva, Liudmila / David, Liron / Rawson, Shaun / Shen, Chen / Pasricha, Teerithveen / Pelegrin, Pablo / Wu, Hao

    Cell. 2021 Dec. 22, v. 184, no. 26

    2021  

    Abstract: The NACHT-, leucine-rich-repeat- (LRR), and pyrin domain-containing protein 3 (NLRP3) is emerging to be a critical intracellular inflammasome sensor of membrane integrity and a highly important clinical target against chronic inflammation. Here, we ... ...

    Abstract The NACHT-, leucine-rich-repeat- (LRR), and pyrin domain-containing protein 3 (NLRP3) is emerging to be a critical intracellular inflammasome sensor of membrane integrity and a highly important clinical target against chronic inflammation. Here, we report that an endogenous, stimulus-responsive form of full-length mouse NLRP3 is a 12- to 16-mer double-ring cage held together by LRR-LRR interactions with the pyrin domains shielded within the assembly to avoid premature activation. Surprisingly, this NLRP3 form is predominantly membrane localized, which is consistent with previously noted localization of NLRP3 at various membrane organelles. Structure-guided mutagenesis reveals that trans-Golgi network dispersion into vesicles, an early event observed for many NLRP3-activating stimuli, requires the double-ring cages of NLRP3. Double-ring-defective NLRP3 mutants abolish inflammasome punctum formation, caspase-1 processing, and cell death. Thus, our data uncover a physiological NLRP3 oligomer on the membrane that is poised to sense diverse signals to induce inflammasome activation.
    Keywords cages ; caspase-1 ; cell death ; inflammasomes ; inflammation ; mice ; mutagenesis ; organelles
    Language English
    Dates of publication 2021-1222
    Size p. 6299-6312.e22.
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 187009-9
    ISSN 1097-4172 ; 0092-8674
    ISSN (online) 1097-4172
    ISSN 0092-8674
    DOI 10.1016/j.cell.2021.11.011
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  8. Article ; Online: NLRP3 cages revealed by full-length mouse NLRP3 structure control pathway activation.

    Andreeva, Liudmila / David, Liron / Rawson, Shaun / Shen, Chen / Pasricha, Teerithveen / Pelegrin, Pablo / Wu, Hao

    Cell

    2021  Volume 184, Issue 26, Page(s) 6299–6312.e22

    Abstract: The NACHT-, leucine-rich-repeat- (LRR), and pyrin domain-containing protein 3 (NLRP3) is emerging to be a critical intracellular inflammasome sensor of membrane integrity and a highly important clinical target against chronic inflammation. Here, we ... ...

    Abstract The NACHT-, leucine-rich-repeat- (LRR), and pyrin domain-containing protein 3 (NLRP3) is emerging to be a critical intracellular inflammasome sensor of membrane integrity and a highly important clinical target against chronic inflammation. Here, we report that an endogenous, stimulus-responsive form of full-length mouse NLRP3 is a 12- to 16-mer double-ring cage held together by LRR-LRR interactions with the pyrin domains shielded within the assembly to avoid premature activation. Surprisingly, this NLRP3 form is predominantly membrane localized, which is consistent with previously noted localization of NLRP3 at various membrane organelles. Structure-guided mutagenesis reveals that trans-Golgi network dispersion into vesicles, an early event observed for many NLRP3-activating stimuli, requires the double-ring cages of NLRP3. Double-ring-defective NLRP3 mutants abolish inflammasome punctum formation, caspase-1 processing, and cell death. Thus, our data uncover a physiological NLRP3 oligomer on the membrane that is poised to sense diverse signals to induce inflammasome activation.
    MeSH term(s) Amino Acid Sequence ; Animals ; Cell Membrane/metabolism ; Cryoelectron Microscopy ; HEK293 Cells ; Humans ; Inflammasomes/metabolism ; Mice ; Models, Biological ; Models, Molecular ; Mutation/genetics ; NIMA-Related Kinases/genetics ; NLR Family, Pyrin Domain-Containing 3 Protein/chemistry ; NLR Family, Pyrin Domain-Containing 3 Protein/isolation & purification ; NLR Family, Pyrin Domain-Containing 3 Protein/metabolism ; NLR Family, Pyrin Domain-Containing 3 Protein/ultrastructure ; Nigericin/pharmacology ; Protein Binding ; Protein Domains ; Protein Multimerization ; trans-Golgi Network/metabolism
    Chemical Substances Inflammasomes ; NLR Family, Pyrin Domain-Containing 3 Protein ; NIMA-Related Kinases (EC 2.7.11.1) ; Nek7 protein, mouse (EC 2.7.11.1) ; Nigericin (RRU6GY95IS)
    Language English
    Publishing date 2021-12-02
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 187009-9
    ISSN 1097-4172 ; 0092-8674
    ISSN (online) 1097-4172
    ISSN 0092-8674
    DOI 10.1016/j.cell.2021.11.011
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Piezo mechanosensory channels regulate centrosome integrity and mitotic entry.

    David, Liron / Martinez, Laurel / Xi, Qiongchao / Kooshesh, Kameron A / Zhang, Ying / Shah, Jagesh V / Maas, Richard L / Wu, Hao

    Proceedings of the National Academy of Sciences of the United States of America

    2022  Volume 120, Issue 1, Page(s) e2213846120

    Abstract: Piezo1 and 2 are evolutionarily conserved mechanosensory cation channels known to function on the cell surface by responding to external pressure and transducing a mechanically activated ... ...

    Abstract Piezo1 and 2 are evolutionarily conserved mechanosensory cation channels known to function on the cell surface by responding to external pressure and transducing a mechanically activated Ca
    MeSH term(s) Mechanotransduction, Cellular ; Centrosome/metabolism ; Centrioles ; Microtubules
    Language English
    Publishing date 2022-12-27
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 209104-5
    ISSN 1091-6490 ; 0027-8424
    ISSN (online) 1091-6490
    ISSN 0027-8424
    DOI 10.1073/pnas.2213846120
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article: ROS-dependent palmitoylation is an obligate licensing modification for GSDMD pore formation.

    Du, Gang / Healy, Liam B / David, Liron / Walker, Caitlin / Fontana, Pietro / Dong, Ying / Devant, Pascal / Puthenveetil, Robbins / Ficarro, Scott B / Banerjee, Anirban / Kagan, Jonathan C / Lieberman, Judy / Wu, Hao

    bioRxiv : the preprint server for biology

    2023  

    Abstract: Gasdermin D (GSDMD) is the common effector for cytokine secretion and pyroptosis downstream of inflammasome activation by forming large transmembrane pores upon cleavage by inflammatory caspases. Here we report the surprising finding that GSDMD cleavage ... ...

    Abstract Gasdermin D (GSDMD) is the common effector for cytokine secretion and pyroptosis downstream of inflammasome activation by forming large transmembrane pores upon cleavage by inflammatory caspases. Here we report the surprising finding that GSDMD cleavage is not sufficient for its pore formation. Instead, GSDMD is lipidated by S-palmitoylation at Cys191 upon inflammasome activation, and only palmitoylated GSDMD N-terminal domain (GSDMD-NT) is capable of membrane translocation and pore formation, suggesting that palmitoylation licenses GSDMD activation. Treatment by the palmitoylation inhibitor 2-bromopalmitate and alanine mutation of Cys191 abrogate GSDMD membrane localization, cytokine secretion, and cell death, without affecting GSDMD cleavage. Because palmitoylation is formed by a reversible thioester bond sensitive to free thiols, we tested if GSDMD palmitoylation is regulated by cellular redox state. Lipopolysaccharide (LPS) mildly and LPS plus the NLRP3 inflammasome activator nigericin markedly elevate reactive oxygen species (ROS) and GSDMD palmitoylation, suggesting that these two processes are coupled. Manipulation of cellular ROS by its activators and quenchers augment and abolish, respectively, GSDMD palmitoylation, GSDMD pore formation and cell death. We discover that zDHHC5 and zDHHC9 are the major palmitoyl transferases that mediate GSDMD palmitoylation, and when cleaved, recombinant and partly palmitoylated GSDMD is 10-fold more active in pore formation than bacterially expressed, unpalmitoylated GSDMD, evidenced by liposome leakage assay. Finally, other GSDM family members are also palmitoylated, suggesting that ROS stress and palmitoylation may be a general switch for the activation of this pore-forming family.
    One-sentence summary: GSDMD palmitoylation is induced by ROS and required for pore formation.
    Language English
    Publishing date 2023-03-07
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2023.03.07.531538
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top