LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 7 of total 7

Search options

  1. Article ; Online: The beginning of a new era: treatment of erectile dysfunction by use of physical energies as an alternative to pharmaceuticals.

    Gruenwald, Ilan / Spector, Avner / Shultz, Tamar / Lischinsky, Daniel / Kimmel, Eitan

    International journal of impotence research

    2019  Volume 31, Issue 3, Page(s) 155–161

    Abstract: This introductory manuscript aims to familiarize the concept of the ability of certain forces or energies applied on the penis. This concept is described and discussed in more detail for three optional applicative energies; shock wave energy via mechano- ... ...

    Abstract This introductory manuscript aims to familiarize the concept of the ability of certain forces or energies applied on the penis. This concept is described and discussed in more detail for three optional applicative energies; shock wave energy via mechano-transduction, ultrasound energy via its theoretical unique effect on the cellular membrane, specifically cyclic separation of the two phospholipid layers, creating biochemical, functional and structural tissue changes. Radio frequency energy via its heating effect is proven to induce immediate changes on collagen strucures and on realignment of collagen fibers, as well as induction of local vasodilation. Applying any of these energies on the erectile tissue may potentially affect biochemical processes, which through different mechanisms lead to a beneficial clinical effect on erectile function.
    MeSH term(s) Animals ; Disease Models, Animal ; Erectile Dysfunction/physiopathology ; Erectile Dysfunction/therapy ; Humans ; Male ; Penile Erection ; Penis/physiopathology ; Radiofrequency Therapy ; Ultrasonic Therapy
    Language English
    Publishing date 2019-04-29
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1034295-3
    ISSN 1476-5489 ; 0955-9930
    ISSN (online) 1476-5489
    ISSN 0955-9930
    DOI 10.1038/s41443-019-0142-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Low-Intensity Extracorporeal Shockwave Therapy for Erectile Dysfunction in Diabetic Patients.

    Spivak, Leonid / Shultz, Tamar / Appel, Boaz / Verze, Paolo / Yagudaev, David / Vinarov, Andrei

    Sexual medicine reviews

    2019  Volume 9, Issue 4, Page(s) 619–627

    Abstract: Introduction: The cause of erectile dysfunction (ED) in diabetic patients is complex and involves both neurogenic and vasculogenic components and is often hard to treat.: Aim: To study the effect of low-intensity extracorporeal shock wave therapy (Li- ...

    Abstract Introduction: The cause of erectile dysfunction (ED) in diabetic patients is complex and involves both neurogenic and vasculogenic components and is often hard to treat.
    Aim: To study the effect of low-intensity extracorporeal shock wave therapy (Li-ESWT) therapy on a subgroup of diabetic patients with ED who are responders (PDE5I-R) and non-responders (PDE5I-NR) to phosphodiesterase 5 inhibitors (PDE5I).
    Methods: Analysis of pooled data from 5 double-blind, sham-controlled trials was performed. In this sub-analysis, of 350 patients in the PDE5I-R group and with vasculogenic ED, we found 61 patients with diabetes mellitus who underwent LI-ESWT. Another 48 patients (of 53) belonged to the PDE5I-NR group. Baseline efficacy was evaluated with the International Index of Erectile Function-Erectile Function domain questionnaire (IIEF-EF) for the PDE5I-R and with Erection Hardness Score, IIEF-EF, and flow-mediated dilation technique for the PDE5I-NR.
    Main outcome measures: Change in the IIEF-EF score after treatment of diabetes-induced ED with Li-ESWT in the PDE5i-R group vs the PDE5i-NR group.
    Results: LI-ESWT therapy was found to be effective in both subgroups of diabetic patients. Minimally clinical important difference in IIEF-EF score was achieved in 50%, 79.5%, 77.3%, and 65.9% of the subjects in the active group in after the sixth shockwave (SW) treatment evaluation (just before initiating the seventh SW session) and at 1 month, 6 months, and 12 months after the last SW treatment, respectively. The difference among the groups was significant (P < .05) after the sixth treatment and in all the follow-up periods. In the PDE5I-NR group, 55% of the active group were converted to PDE5I-5-R after LI-ESWT. The difference between the active and sham groups was statistically significant in all the tested measures (P < .001).
    Conclusion: LI-ESWT is safe and effective for the treatment of ED in PDE5I-R and PDE5I-NR groups. Spivak L, Shultz T, Appel B, et al. Low-Intensity Extracorporeal Shockwave Therapy for Erectile Dysfunction in Diabetic Patients. Sex Med Rev 2021;9:619-627.
    MeSH term(s) Diabetes Mellitus ; Erectile Dysfunction/therapy ; Extracorporeal Shockwave Therapy ; Humans ; Male ; Penile Erection ; Phosphodiesterase 5 Inhibitors/therapeutic use ; Randomized Controlled Trials as Topic
    Chemical Substances Phosphodiesterase 5 Inhibitors
    Language English
    Publishing date 2019-08-01
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 2722257-3
    ISSN 2050-0521 ; 2050-0513
    ISSN (online) 2050-0521
    ISSN 2050-0513
    DOI 10.1016/j.sxmr.2019.06.007
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article: Low intensity extracorporeal shockwave therapy for erectile dysfunction: a study in an Indian population.

    Srini, Vasan Satya / Reddy, Rahul Kumar / Shultz, Tamar / Denes, Bela

    The Canadian journal of urology

    2015  Volume 22, Issue 1, Page(s) 7614–7622

    Abstract: Introduction: Erectile dysfunction (ED) has been shown to be associated with a number of physical conditions and affects not only physical but also psychosocial health. Currently oral, on-demand phosphodiesterase type 5 inhibitors (PDE5i) are preferred ... ...

    Abstract Introduction: Erectile dysfunction (ED) has been shown to be associated with a number of physical conditions and affects not only physical but also psychosocial health. Currently oral, on-demand phosphodiesterase type 5 inhibitors (PDE5i) are preferred first line treatment. Though effective, these drugs have limitations and are associated with significant non-compliance, side effects and do not reverse the underlying pathology. Non-invasive low intensity shockwave therapy (LISWT) has been shown to significantly improve erectile function in men previously PDE5i dependent. We describe our experience and results with this therapy in an Indian population of men with ED. This study assessed the efficacy of low intensity extracorporeal shockwave therapy (LI-ESWT) on Indian men with organic ED who had previously responded to PDE5i.
    Materials and methods: All the patients underwent a 1 month PDE5i washout period. Men were randomized to receive either 12 sessions of LI-ESWT (n = 95) or placebo/sham therapy (n = 40). Before the first treatment, erectile function and penile hemodynamics were assessed to substantiate a vascular etiology for the ED. Outcomes were assessed using Erection Hardness Score (EHS), International Index of Erectile Function-Erectile Function Domain (IIEF-EF domain) and Clinical Global Impression of Change (CGIC) scores at 1, 3, 6, 9 and 12 months post-treatment.
    Results: We found a significant increase in the EHS and IIEF-EF Domain scores from visit 1 to follow up 5 (12 months) in the treated group compared to the placebo group. By 1 month after treatment there were highly significant differences between the LI-ESWT and placebo groups (p < 0.0001). Out of 60 men in the LI-ESWT group who completed the study, 47 (78%) men at FU1 and 43 (71%) at FU5 who were initially unable to achieve spontaneous erections hard enough for penetration (EHS ≤ 2) were able to do so (EHS ≥ 3) compared to none in the placebo group. The treatment was well tolerated and none of the men experienced treatment related discomfort or reported any adverse effects from the treatment.
    Conclusions: In this double-blind, placebo-controlled study, LI-ESWT demonstrated a positive long term clinical effect with improvement in erectile function of Indian men with vasculogenic ED who were prior responders to PDE5i therapy. The efficacy and tolerability of this treatment, coupled with its long term benefits and rehabilitative characteristics, make it an attractive new therapeutic option for men with vasculogenic erectile dysfunction.
    MeSH term(s) Double-Blind Method ; Hemodynamics ; High-Energy Shock Waves/therapeutic use ; Humans ; Impotence, Vasculogenic/therapy ; India ; Male ; Penile Erection ; Penis/blood supply ; Phosphodiesterase 5 Inhibitors/therapeutic use ; Severity of Illness Index
    Chemical Substances Phosphodiesterase 5 Inhibitors
    Language English
    Publishing date 2015-02
    Publishing country Canada
    Document type Journal Article ; Randomized Controlled Trial
    ZDB-ID 2064475-9
    ISSN 1195-9479
    ISSN 1195-9479
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: β-tubulin cofactor D and ARL2 take part in apical junctional complex disassembly and abrogate epithelial structure

    Shultz, Tamar / Shmuel, Miriam / Hyman, Tehila / Altschuler, Yoram

    FASEB journal. 2008 Jan., v. 22, no. 1

    2008  

    Abstract: In epithelial cells, the apical junctional complex (AJC), composed of tight junctions (TJs) and adherens junctions (AJs), maintains cell-surface polarity by forming a fence that prevents lateral movement and diffusion of proteins and lipids between the ... ...

    Abstract In epithelial cells, the apical junctional complex (AJC), composed of tight junctions (TJs) and adherens junctions (AJs), maintains cell-surface polarity by forming a fence that prevents lateral movement and diffusion of proteins and lipids between the apical and basolateral PM and holds the epithelial monolayer intact through cell-cell contacts. Disassembly of this complex is a prime event in development and cell transformation. Maintenance of the AJC has been shown to involve mainly the actin cytoskeleton. Recent findings also point to the involvement of the microtubule (MT) system. Here we show the first evidence that in polarized epithelial MDCK cells, ARF-like protein 2 (ARL2) and β-tubulin cofactor D, known to be involved in MT dynamics, have a role in disassembly of the AJC followed by cell dissociation from the epithelial monolayer, which is not dependent on MT depolymerization. In addition, we show that β-tubulin cofactor D is partially localized to the lateral PM through its 15 C-terminal amino acids and intact MTs. ARL2 inhibited β-tubulin cofactor D-dependent cell dissociation from the monolayer and AJC disassembly. To our knowledge, this is the first evidence that β-tubulin cofactor D plays a role in cells independent of its presumed role in folding tubulin heterodimers. We conclude that ARL2 and β-tubulin cofactor D participate in AJC disassembly and epithelial depolarization.--Shultz, T., Shmuel, M., Hyman, T., and Altschuler, Y. β-tubulin cofactor D and ARL2 take part in apical junctional complex disassembly and abrogate epithelial structure.
    Language English
    Dates of publication 2008-01
    Size p. 168-182.
    Publishing place The Federation of American Societies for Experimental Biology
    Document type Article
    ZDB-ID 639186-2
    ISSN 1530-6860 ; 0892-6638
    ISSN (online) 1530-6860
    ISSN 0892-6638
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  5. Article: Justice, leader-member exchange, and job performance: are their relationships mediated by organizational culture?

    Tziner, Aharon / Shultz, Tamar / Fisher, Tom

    Psychological reports

    2008  Volume 103, Issue 2, Page(s) 516–526

    Abstract: The hypothesis that organizational justice is linked to leader-member exchange, which in turn affects job performance, was examined. It was predicted that two dimensions of organizational culture, employee supportiveness and attention to detail, would ... ...

    Abstract The hypothesis that organizational justice is linked to leader-member exchange, which in turn affects job performance, was examined. It was predicted that two dimensions of organizational culture, employee supportiveness and attention to detail, would affect both leader-member exchange and organizational justice. Results from a sample of 75 employees of a public service organization found solid support for the predicted model. Contrary to expectations, however, the two aspects of organizational culture were found to play a mediating role: they were affected by organizational justice and in turn affected leader-member exchange. The theoretical implications of the results are discussed.
    MeSH term(s) Adult ; Attitude ; Employee Performance Appraisal ; Employment ; Female ; Humans ; Leadership ; Male ; Organizational Culture ; Social Justice ; Surveys and Questionnaires
    Language English
    Publishing date 2008-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 205658-6
    ISSN 1558-691X ; 0033-2941
    ISSN (online) 1558-691X
    ISSN 0033-2941
    DOI 10.2466/pr0.103.2.516-526
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Beta-tubulin cofactor D and ARL2 take part in apical junctional complex disassembly and abrogate epithelial structure.

    Shultz, Tamar / Shmuel, Miriam / Hyman, Tehila / Altschuler, Yoram

    FASEB journal : official publication of the Federation of American Societies for Experimental Biology

    2008  Volume 22, Issue 1, Page(s) 168–182

    Abstract: In epithelial cells, the apical junctional complex (AJC), composed of tight junctions (TJs) and adherens junctions (AJs), maintains cell-surface polarity by forming a fence that prevents lateral movement and diffusion of proteins and lipids between the ... ...

    Abstract In epithelial cells, the apical junctional complex (AJC), composed of tight junctions (TJs) and adherens junctions (AJs), maintains cell-surface polarity by forming a fence that prevents lateral movement and diffusion of proteins and lipids between the apical and basolateral PM and holds the epithelial monolayer intact through cell-cell contacts. Disassembly of this complex is a prime event in development and cell transformation. Maintenance of the AJC has been shown to involve mainly the actin cytoskeleton. Recent findings also point to the involvement of the microtubule (MT) system. Here we show the first evidence that in polarized epithelial MDCK cells, ARF-like protein 2 (ARL2) and beta-tubulin cofactor D, known to be involved in MT dynamics, have a role in disassembly of the AJC followed by cell dissociation from the epithelial monolayer, which is not dependent on MT depolymerization. In addition, we show that beta-tubulin cofactor D is partially localized to the lateral PM through its 15 C-terminal amino acids and intact MTs. ARL2 inhibited beta-tubulin cofactor D-dependent cell dissociation from the monolayer and AJC disassembly. To our knowledge, this is the first evidence that beta-tubulin cofactor D plays a role in cells independent of its presumed role in folding tubulin heterodimers. We conclude that ARL2 and beta-tubulin cofactor D participate in AJC disassembly and epithelial depolarization.
    MeSH term(s) Animals ; Base Sequence ; Cell Adhesion ; Cell Line ; DNA Primers ; Dogs ; Epithelial Cells/metabolism ; Fluorescent Antibody Technique ; GTP-Binding Proteins/genetics ; GTP-Binding Proteins/physiology ; Humans ; Intercellular Junctions ; Microtubule-Associated Proteins/genetics ; Microtubule-Associated Proteins/physiology ; Molecular Chaperones/genetics ; Molecular Chaperones/physiology ; Mutagenesis, Site-Directed
    Chemical Substances DNA Primers ; Microtubule-Associated Proteins ; Molecular Chaperones ; TBCA protein, human ; ARL2 protein, human (EC 3.6.1.-) ; GTP-Binding Proteins (EC 3.6.1.-)
    Language English
    Publishing date 2008-01
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 639186-2
    ISSN 1530-6860 ; 0892-6638
    ISSN (online) 1530-6860
    ISSN 0892-6638
    DOI 10.1096/fj.06-7786com
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article: EFA6 regulates endosomal trafficking and affects early endosomes in polarized MDCK cells.

    Shultz, Tamar / Nash-Livni, Nadav / Shmuel, Miriam / Altschuler, Yoram

    Biochemical and biophysical research communications

    2006  Volume 351, Issue 1, Page(s) 106–112

    Abstract: The small-GTPase family of ADP ribosylation factors (ARFs) recruit coat proteins to promote vesicle budding. ARFs are activated by an association with sec7-containing exchange factors which load them with GTP. In epithelial cells, the small GTPase ARF6 ... ...

    Abstract The small-GTPase family of ADP ribosylation factors (ARFs) recruit coat proteins to promote vesicle budding. ARFs are activated by an association with sec7-containing exchange factors which load them with GTP. In epithelial cells, the small GTPase ARF6 operates within the endocytic system and has been shown to associate with ARNO to promote apical endocytosis and early to late endosomal trafficking. EFA6 has been shown to stimulate tight-junction formation and maintenance. Here, we show that in polarized epithelial MDCK cells, EFA6 is localized to early endosomes, causes their dramatic enlargement, and promotes basolateral targeting of IgA, which is normally targeted to the apical PM. These results suggest that the physiological function of ARF6 within the endocytic system is regulated by the exchange factor it associates with.
    MeSH term(s) Animals ; Cell Line ; Cell Polarity ; Dogs ; Endocytosis/physiology ; Endosomes/metabolism ; Kidney/metabolism ; Nerve Tissue Proteins/metabolism ; Protein Transport/physiology
    Chemical Substances Nerve Tissue Proteins ; PSD protein, human
    Language English
    Publishing date 2006-12-08
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 205723-2
    ISSN 0006-291X ; 0006-291X
    ISSN (online) 0006-291X
    ISSN 0006-291X
    DOI 10.1016/j.bbrc.2006.10.024
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top