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עמוד בית
Thu, 24.07.25

Search results


June 2023
Yaron Niv MD FACG AGAF, Theodore Rokkas MD PhD FACG AGAF FEBGH

Background: Mucins, heavily glycosylated glycoproteins, are synthesized by mucosal surfaces and play an important role in healthy and malignant states. Changes in mucin synthesis, expression, and secretion may be a primary event or may be secondary to inflammation and carcinogenesis.

Objectives: To assess current knowledge of mucin expression in the small bowel of celiac disease (CD) patients and to determine possible associations between mucin profile and gluten-free diet.

Method: Medical literature searches of articles in English were conducted using the terms mucin and celiac. Observational studies were included. Pooled odds ratios and 95% confidence intervals were calculated.

Results: Of 31 articles initially generated by a literature search, 4 observational studies that fulfilled the inclusion criteria remained eligible for meta-analysis. These studies included 182 patients and 148 controls from four countries (Finland, Japan, Sweden, United States). Mucin expression was significantly increased in small bowel mucosa of CD patients than in normal small bowel mucosa (odds ratio [OR] 7.974, 95% confidence interval [95%CI] (1.599–39.763), P = 0.011] (random-effect model). Heterogeneity was significant: Q = 35.743, df (Q) = 7, P < 0.0001, I2 = 80.416%. ORs for MUC2 and MUC5AC expression in the small bowel mucosa of untreated CD patients were 8.837, 95%CI 0.222–352.283, P = 0.247 and 21.429, 95%CI 3.883–118.255, P < 0.0001, respectively.

Conclusions: Expression of certain mucin genes in the small bowel mucosa of CD patients is increased and may serve as a diagnostic tool and assist in surveillance programs.

May 2023
Yaniv Zager MD, Yuri Goldes MD, Dan Assaf MD, Nadav Zilka MD, Roi Anteby MD, Yehonatan Nevo MD, Liran Barda MD, Avinoam Nevler MD

Background: The neutrophil to lymphocyte ratio (NLR) has demonstrated prognostic value in various malignant conditions, including gastric adenocarcinoma. However, chemotherapy may affect NLR.

Objectives: To evaluate the prognostic value of NLR as an accessory decision-making tool in terms of operating patients after neoadjuvant chemotherapy in patients with resectable gastric cancer.

Methods: We collected oncologic, perioperative, and survival data of patients with gastric adenocarcinoma who underwent curative intent gastrectomy and D2 lymphadenectomy between 2009 and 2016. The NLR was calculated from preoperative laboratory tests and classified as high (> 4) and low (≤ 4). The t-test, chi-square, Kaplan-Meier analysis, and Cox multivariate regression models were used to assess associations of clinical, histologic, and hematological variables with survival.

Results: For 124 patients the median follow-up was 23 months (range 1–88). High NLR was associated with greater rate of local complication (r=0.268, P < 0.01). The rate of major complications (Clavien-Dindo ≥ 3) was higher in the high NLR group (28% vs. 9%, P = 0.022). Among the 53 patients who received neoadjuvant chemotherapy, those with low NLR had significantly improved disease-free survival (DFS) (49.7 vs. 27.7 months, P = 0.025). Low NLR was not significantly associated with overall survival (mean survival, 51.2 vs. 42.3 months, P = 0.19). Multivariate regression identified NLR group (P = 0.013), male gender (P = 0.04), and body mass index (P = 0.026) as independently associated with DFS.

Conclusions: Among gastric cancer patients planned for curative intent surgery who underwent neoadjuvant chemotherapy, NLR may have prognostic value, particularly regarding DFS and postoperative complications.

March 2023
Johnatan Nissan, Anna Blokh MD, Niv Ben-Shabat MD MPH, Harald Heidecke PhD, Gilad Halpert PhD, Yehuda Shoenfeld MD FRCP MaACR, Howard Amital MD MHA

Background: Fibromyalgia syndrome (FMS) is estimated to affect 2–4% of the general population. While FMS has some known environmental and genetic risk factors, the disorder has no clear etiology. A common coexisting disorder with FMS is small fiber neuropathy (SFN). High levels of serum immunoglobulin M (IgM) binding to trisulfated-heparin-disaccharide (TS-HDS) were recently found to be associated with SFN.

Objectives: To evaluate potential differences in anti-TS-HDS antibody titers in women with FMS compared to healthy controls.

Methods: In this cross-sectional study, we evaluated 51 female participants: 30 with a diagnosis of FMS and 21 healthy controls who had been recruited at the Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Israel. All of the participants were older than 18 years of age. Anti-TS-HDS IgM levels were measured in their sera using the enzyme immunoassay technique.

Results: The mean anti-TS-HDS IgM levels were significantly lower in the FMS group, compared with the control group (7.7 ± 5 vs. 13.2 ± 8.6 U/ml, respectively; P = 0.013).

Conclusions: There is a possible association between FMS and anti-TS-HDS IgM. This association might be the missing link for the coexistence of SFN and FMS, but further study should be performed to assess this association and this auto-antibody characteristic.

December 2022
Ze'ev Itsekson Hayosh MD, Eiman Abu Bandora MD, Natalia Shelestovich MD, Maya Nulman MD, Mati Bakon MD, Gal Yaniv MD, Boris Khaitovitch MD, Shmuel Balan MD, Alexandra Gerasimova MD, Tali Drori MD, Stefan Mausbach MD, Yvonne Schwammenthal MD, Arnon Afek MD, Joab Chapman MD, Efrat Shavit Stein MD, David Orion MD

Endovascularly retrieved clots may be a potential resource for diagnosing stroke etiology. This method may influence secondary prevention treatment. We measure thrombin activity eluted by serially washing clots. We concluded that an assay measuring the change in thrombin in clots retrieved during acute stroke endovascular thrombectomy procedures may serve as a diagnostic marker of the origin of the clot. The suggested mechanism for these differences may be the clot location before its retrieval, with high blood flow causing thrombin washout in atherosclerotic clots, in contrast to atrium appendage low blood flow retaining high thrombin levels.

November 2022
Niv Izhaki MD, Shay Perek MD, Mahmoud Agbaria BSc, Ayelet Raz-Pasteur MD

Pneumonia patients are susceptible to autonomic nervous system changes. Ultrashort HRV (usHRV) is the measurement of cyclic changes in heart rate over a period < 5 minutes.

Objectives: To describe usHRV in patients with pneumonia and assess the correlation with mortality.

Methods: We conducted a retrospective analysis, which included patients diagnosed with pneumonia in the emergency department (ED). UsHRV indices were calculated from a 10-second ED electrocardiogram and correlated with mortality utilizing logistic and Cox regressions.

Results: The study comprised 240 patients. Mortality rates over 30, 90, and 365 days were 13%, 18%, and 30%, respectively. usHRV frequency-domain parameters had significant univariate correlations with mortality. Normalized low frequency (LF) and high frequency (HF) were correlated with 30-, 90-, and 365-day mortality in an opposite direction (odds ratio [OR] 0.094, P = 0.028 vs. OR 4.589, P =0.064; OR 0.052, P = 0.002 vs. OR 6.975, P =0.008; OR 0.055, P < 0.001 vs. OR 7.931, P < 0.001; respectively). Survival analysis was conducted for a follow-up median period of 5.86 years (interquartile range 0.65–9.77 years). Univariate Cox proportional hazard regression revealed time-domain indices with significant correlation with survival (SDNN and RMSSD; hazard ratio [HR] 1.005, 1.005; P = 0.032, P = 0.005; respectively) as well as frequency-domain parameters (normalized LF, HF, LF/HF ratio, and total power; HR 0.102, 5.002, 0.683, 0.997, respectively; P < 0.001).

Conclusions: usHRV may predict mortality in pneumonia patients and serve as a novel risk stratification tool.

October 2022
Ahmad Elnassasra, MD; Yehuda Hershkovitz, MD ; Yaniv Zager, MD; Ron Lavy, MD;
June 2022
Yair Bezalel Shahar BPT, Ruth Goldstein MD, Yaniv Nudelman MSc PT, Omri Besor MD MPH, and Noa Ben Ami PT PhD1

Background: Low back pain has been the leading cause for disability worldwide for several decades, and clinical guidelines for its management clearly emphasize a multifactorial approach. Yet, current guidelines are still not well implemented by clinicians.

Objectives: To explore the attitudes of family medicine residents regarding low back pain and to determine whether they positively correlate with their treatment approaches. To test if these attitudes can be affected by the Enhanced Transtheoretical Model Intervention (ETMI), a guideline-based workshop.

Methods: Participants completed an online questionnaire regarding their attitudes toward low back pain and clinical habits, after which they attended an online ETMI educational workshop. One month later all participants were asked to complete the questionnaire a second time. Statistical analysis was conducted to explore the attitudes of the residents and clinical approaches, as well as any associations between them, as well as possible differences pre- and post-intervention.

Results: The participants exhibited highly psychologically oriented attitudes. Correlations between the attitudes and treatment did not show consistent coherency. Results regarding the participants clinical approaches were revealed to have two distinct and opposed inclinations: biomedically and biopsychosocially. Last, results for the re-activation subscale were significantly higher post-intervention.

Conclusions: Family medicine residents seem to be highly psychologically oriented regarding low back pain; however, they do not necessarily treat their patients accordingly. Their clinical choices seem to follow two different approaches: guideline-consistent and non-guideline-consistent. An ETMI guideline-based workshop may sway their attitudes toward re-activation of patients. Further research is needed to determine whether similar results would arise in larger physician populations.

January 2022
Yehuda Hershkovitz MD, Yaniv Zager MD, Batia Segal MD, and Yoram Klein MD

Background: Emergency surgical repair is the standard approach to the management of an incarcerated abdominal wall hernia (IAWH). In cases of very high-risk patients, manual closed reduction (MCR) of IAWH may prevent the need for emergency surgery.

Objectives: To evaluate the safety, success rate, and complications of MCR in the management of IAWH conducted in an emergency department.

Methods: The data of all patients who underwent MCR between 2012 and 2018 were retrospectively collected. Patient demographics, presenting symptoms, clinical parameters, and management during the hospitalization were retrieved from the medical charts.

Results: Overall, 548 patients underwent MCR during the study period. The success rate was 25.4% (139 patients). One patient had a complication that required a laparotomy 2 days after his discharge. A recurrent incarceration occurred in 23%, 60% of them underwent successful repeated MCR and the others underwent emergency surgery. Six patients (1.4%) had a bowel perforation after a failed MCR.

Conclusions: MCR can be performed safely in the emergency department and should be consider as an option to treat IAWH, especially in high operative risk patients

December 2021
Yuval Avda MD, Jonathan Modai MD, Igal Shpunt MD, Michael Dinerman MD, Yaniv Shilo MD, Roy Croock MD, Morad Jaber MD, Uri Lindner MD, and Dan Leibovici MD

Background: Patients with high-risk prostate cancer are at higher risk of treatment failure, development of metastatic disease, and mortality. There is no consensus on the treatment of choice for these patients, and either radical prostatectomy (RP) or external beam radiation therapy (EBRT) is recommended. Surgery is less common as the initial treatment for high-risk patients, possibly reflecting the concerns regarding morbidity as well as oncological and functional outcomes. Another high-risk group includes patients with failure of previous EBRT or focal treatment. For these patients, salvage radical prostatectomy (SRP) can be offered.

Objectives: To describe our experience with surgery of high-risk patients and SRP.

Methods: This cohort included all high-risk patients undergoing RP or SRP at our institution between January 2012 and December 2019. We reviewed the electronic medical charts and collected pathological, functional, and oncological outcomes.

Results: Our cohort included 39 patients; average age was 67.8 years, and average follow-up duration was 40.9 months. The most common postoperative morbidity was transfusion of packed cells. There were no life-threatening events or postoperative mortality. Continence was preserved (zero to one pad) in 76% of the patients. Twenty-three patients (59%) had undetectable prostate specific antigen levels following the surgery, 11 (30%) were treated with either adjuvant or salvage EBRT, and 12 patients (31%) were found with no evidence of disease and no additional treatment was needed.

Conclusions: Radical prostatectomy and SRP are safe options for patients presenting with high-risk prostate cancer, with good functional and oncological outcomes.

Benjamin Russell MD, Yoram Klein MD, Uri Rimon MD, Zehavit Kirshenboim MD, Nir Horesh MD, and Yaniv Zager MD
November 2021
Yaniv Faingelernt MD, Eugene Leibovitz MD, Baruch Yerushalmi MD, Eytan Damari MD, Eyal Kristal MD, Raouf Nassar MD, and Dana Danino MD
September 2021
Roy Croock MD, Jonathan Modai MD, Yuval Avda MD, Igal Shpunt MD, Yaniv Shilo MD, Yamit Peretz MD, Uri Lindner MD, Avraham Bercovich MD, and Dan Leibovici MD

Background: Radical cystectomy is a complicated surgery with significant risks. Complications of Clavien–Dindo grade 3–4 range from 25% to 40% while risk of mortality is 2%. Pelvic surgery or radiotherapy prior to radical cystectomy increases the challenges of this surgery.

Objectives: To assess whether radical cystectomy performed in patients with prior history of pelvic surgery or radiation was associated with increased frequency of Clavien–Dindo grade 3 or higher complications compared to patients without prior pelvic intervention.

Methods: We retrospectively evaluated all patients who underwent radical cystectomy at our center over a 7-year period. All patients with pelvic radiation or surgery prior to radical cystectomy comprised group 1, while group 2 included the remaining patients.

Results: In our study, 65 patients required radical cystectomy at our institution during the study period. Group 1 was comprised of 17 patients and group 2 included 48 patients. Four patients from group 2 received orthotopic neobladder, while an ileal conduit procedure was performed in the remaining patients. Estimated blood loss and the amount of blood transfusions given was the only variable found to be statistically different between the two groups. One patient from group 1 had four pelvic interventions prior to surgery, and her cystectomy was aborted.

Conclusions: Radical cystectomy may be safely performed in patients with a history of pelvic radiotherapy or surgery, with complication rates similar to those of non-irradiated or operated pelvises.

August 2021
Yaniv Steinfeld MD, Merav Ben Natan RN MBA PhD, Yaniv Yonai MD, and Yaron Berkovich MD

Background: Little is known regarding the impact of the coronavirus disease-2019 (COVID-19) pandemic on the incidence of hip fractures among older adults

Objectives: To compare the characteristics of patients with a hip fracture following a fall during the COVID-19 pandemic year and during the preceding year.

Methods: We conducted a retrospective cohort study of older patients who had undergone surgery for hip fracture repair in a major 495-bed hospital located in northern central Israel following a fall. Characteristics of patients who had been hospitalized in 2020 (pandemic year, n=136) and in 2019 (non-pandemic year, n=151) were compared.

Results: During the pandemic year, patients were less likely to have fallen in a nursing facility, to have had muscle or balance problems, and to have had a history of falls and fractures following a fall. Moreover, the average length of stay (LOS) in the hospital was shorter; however, the average time from the injury to hospitalization was longer. Patients were less likely to have acquired a postoperative infection or to have died. During the pandemic year, postoperative infection was only associated with prolonged LOS.

Conclusions: The COVID-19 pandemic may have had a positive impact on the behavior of older adults as well as on the management of hip fracture patients. However, healthcare providers should be aware of the possible reluctance to seek care during a pandemic. Moreover, further research on the impact of the change in management during COVID-19 on hip fracture survival is warranted

Yaniv Steinfeld MD, Roi Akian MD, Alexey Rovitsky MD, Natalia Puchkov MD, and Yaniv Keren MD

Background: In recent years, treatment for Achilles tendon rupture (ATR) went through radical changes: from the conservative non-weight bearing approach to a functional protocol. This functional protocol allows complete weight bearing after only 2 weeks by placing the foot in a plastic boot in tapered down equines and using interchangeable wedges under the heel. This change of approach has dramatically lowered the rate of re-rupture.

Objectives: To describe our preliminary results with this functional protocol and to assess outcome measures in the functional conservative treatment.

Methods: The study comprised 15 people who were evaluated clinically and by sonograph. We measured calf circumference, ankle joint range of motion (ROM), and single-leg heel-rise test (SLHRT). In addition, standard scoring methods (Achilles Tendon Rupture Score and Physical Activity Scale) were examined.

Results: In our cohort 14 people successfully gained SLHRT. The mean Achilles Tendon Rupture Score functional questionnaire and Physical Activity Scale physical activity questionnaire score was 85.6 of 100, and 4.7 of 6, respectively. There were no significant differences in ankle ROM compared to the uninjured limb. There was statistically significant reduction in the calf circumference and soleus muscle thickness sonographically.

Conclusions: It seems that the conservative functional treatment of ATR demonstrates good functional outcomes, with the patients returning to close to normal activity, although noted muscle wasting and weakness. This protocol presents a true alternative to surgery and should be considered for most non-insertional Achilles tendon tears

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