Rudolph Virchow's Upper Silesia report: the starting point for his simultaneous engagement with public health and antisemitism.

In 2023 an important anniversary took place. It regards Virchow's report on the Upper Silesia epidemic typhus, which was associated with the death of numerous Polish peasants. It is also the starting point of Virchow's political career and fight against antisemitism, which has reached fearful levels in academia. Antisemitism is not new, but the recrudescence following the October 7th massacre of Jewish and not-Jewish people is appalling and recalls Virchow's vehemence of the past a few decades before the Nazi extermination of the Shoah during the World War II.

Peace between Israel and Palestine?

Talking to a relative of mine who lives in Israel, we exchanged by email about the Hamas terrorist attack and the brutal re-sponse of the Israeli Armed Forces that affected the entire Pal-estinian population of Gaza. He spoke to me about the moral right of the Jewish people to exist and I replied that the Pales-tinian people also had the moral right to exist. That ended the respectful dialogue we had. The Palestinian people's right to ex-ist remained unanswered.

[THE EFFECT OF ETHNICITY ON THE AGE OF SINGLE PATIENTS APPLYING FOR SPERM DONATION].

INTRODUCTION: Sperm banks have shifted from assisting heterosexual couples with male infertility to primarily serving single women and female couples through medical services, reflecting advances in fertility treatments and societal changes. AIMS: Evaluate demographic changes among single women who have applied for sperm donation during 30 years in the State of Israel. METHODS: This retrospective cohort study includes 4265 single women who received sperm donation between January 1992 and December 2021, at a tertiary medical center. We divided the follow-up period into 6 groups of 5 years each. A comparison was made of the demographic characteristics of single women applying for sperm donation in different periods according to: 1) age at the beginning of the treatment; 2) ethnic origin - 7 ethnic groups. RESULTS: The average age of single women who received sperm donation was 38.2±4.4 years. The average age of patients decreased from 39.58 years in 1997-1992 to 38.08 years in 2017-2021 (p-value<0.05). Ashkenazic Jews (38.4%) and Sephardic Jews (37.7%) were the most common ethnic origins among single women, with Arab women comprising only 0.2%. Single Jewish women of Ashkenazi descent seek sperm donation treatment almost a year earlier than their Sephardic counterparts (Arab countries and North Africa). CONCLUSIONS: Single Israeli women opting for early sperm donation carries significant clinical, social, and economic implications. Women from conservative social backgrounds appear to be less inclined to seek sperm donation as single individuals or tend to delay this option until a later age, in contrast to women from liberal backgrounds.

Hidradenitis Suppurativa Incidence and Prevalence Rates Are Increasing: A Population-based Study.

BACKGROUND: Hidradenitis suppurativa (HS) is a chronic relapsing inflammatory skin disease associated with a heavy burden of morbidity and cost. OBJECTIVES: To provide standardized estimates of trends in HS incidence and prevalence among patients in Israel between 2016 and 2019. METHODS: We conducted a population-based analysis of routinely collected electronic health records data from Clalit Health Services, the largest nationwide public health service provider in Israel. Age- and sex-adjusted rates were reported by using the standard European population as a reference. RESULTS: The study included 3488 HS incident cases. The mean ± SD age of onset was 30.3 years and was similar in males and females. HS was more common among Jews with low and medium socioeconomic status. The annual HS incidence rate increased throughout the study period. HS prevalence increased from 0.12% in 2016 to 0.17% in 2019. CONCLUSIONS: HS prevalence and incidence rates steadily rose among the Israeli population between 2016 and 2019. Awareness of these findings can help provide an optimal allocation of healthcare resources by policymakers and health service providers and prevent delays in diagnosis.

Genome wide association study and genomic risk prediction of age related macular degeneration in Israel.

The risk of developing age-related macular degeneration (AMD) is influenced by genetic background. In 2016, the International AMD Genomics Consortium (IAMDGC) identified 52 risk variants in 34 loci, and a polygenic risk score (PRS) from these variants was associated with AMD. The Israeli population has a unique genetic composition: Ashkenazi Jewish (AJ), Jewish non-Ashkenazi, and Arab sub-populations. We aimed to perform a genome-wide association study (GWAS) for AMD in Israel, and to evaluate PRSs for AMD. Our discovery set recruited 403 AMD patients and 256 controls at Hadassah Medical Center. We genotyped individuals via custom exome chip. We imputed non-typed variants using cosmopolitan and AJ reference panels. We recruited additional 155 cases and 69 controls for validation. To evaluate predictive power of PRSs for AMD, we used IAMDGC summary-statistics excluding our study and developed PRSs via clumping/thresholding or LDpred2. In our discovery set, 31/34 loci reported by IAMDGC were AMD-associated (P < 0.05). Of those, all effects were directionally consistent with IAMDGC and 11 loci had a P-value under Bonferroni-corrected threshold (0.05/34 = 0.0015). At a 5 × 10-5 threshold, we discovered four suggestive associations in FAM189A1, IGDCC4, C7orf50, and CNTNAP4. Only the FAM189A1 variant was AMD-associated in the replication cohort after Bonferroni-correction. A prediction model including LDpred2-based PRS + covariates had an AUC of 0.82 (95% CI 0.79-0.85) and performed better than covariates-only model (P = 5.1 × 10-9). Therefore, previously reported AMD-associated loci were nominally associated with AMD in Israel. A PRS developed based on a large international study is predictive in Israeli populations.

Genetic and Clinical Analyses of the KIZ-c.226C>T Variant Resulting in a Dual Mutational Mechanism.

Retinitis pigmentosa (RP) is a heterogeneous inherited retinal disorder. Mutations in KIZ cause autosomal recessive (AR) RP. We aimed to characterize the genotype, expression pattern, and phenotype in a large cohort of KIZ cases. Sanger and whole exome sequencing were used to identify the KIZ variants. Medical records were reviewed and analyzed. Thirty-one patients with biallelic KIZ mutations were identified: 28 homozygous for c.226C>T (p.R76*), 2 compound heterozygous for p.R76* and c.3G>A (p.M1?), and one homozygous for c.247C>T (p.R83*). c.226C>T is a founder mutation among patients of Jewish descent. The clinical parameters were less severe in KIZ compared to DHDDS and FAM161A cases. RT-PCR analysis in fibroblast cells revealed the presence of four different transcripts in both WT and mutant samples with a lower percentage of the WT transcript in patients. Sequence analysis identified an exonic sequence enhancer (ESE) that includes the c.226 position which is affected by the mutation. KIZ mutations are an uncommon cause of IRD worldwide but are not rare among Ashkenazi Jews. Our data indicate that p.R76* affect an ESE which in turn results in the pronounced skipping of exon 3. Therefore, RNA-based therapies might show low efficacy since the mutant transcripts are spliced.

Deciphering the mysteries of the neural code.

This essay is dedicated to the memory of my father David Sompolinsky. As a medical student in Veterinary Medicine in Copenhagen, with the support of his professors and the Danish Resistance, David organised the rescue of 700 Danish Jews in October 1943, helping them escape Nazi persecution and find safety in Sweden.

[JEWISH MEDICAL STUDENTS FROM THE BRITISH MANDATE OF PALESTINE/ERETZ ISRAEL - THEIR FINAL MD EXAMINATION IN BERLIN DURING THE THIRD REICH].

INTRODUCTION: Two Jewish medical students who were forced to discontinue their study upon the raise of the Nazi regime, returned/ immigrated to Palestine and did their internship in Palestine. A third student, although faced with many procedural limitations, was able to continue most of his studies in Berlin including passing the MD examination. The first two students returned, after some years, to Berlin to sit for the Doctor examination which enabled them to gain a permanent medical license in Palestine. We describe the different backgrounds of the 3 students which enabled them to do the examination at Berlin's medical faculty during the Nazi regime. The follow up of the three, revealed glorious medical career during the British mandate and during the first years of the new state of Israel. The Dissertations were signed and supported by three leading Professors of the Berlin's Faculty. Two of them were found to have a National-Socialistic background.

A Comparison of Hidradenitis Suppurativa Characteristics Among Israeli Arabs and Jews: Analysis of Two Cohorts.

BACKGROUND: Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease involving apocrine gland-bearing regions. There is an under-representation of non-Caucasians in epidemiologic studies of HS. The characteristics of HS in Israeli Arabs have not yet been studied. OBJECTIVES: To investigate the demographic and clinical profile of HS in the Israeli Arab population. METHODS: A retrospective analysis was conducted in two cohorts of patients with HS in Israel. The patients were derived from the database of a large health management organization (n=4191, 639 Arabs; population-based) and a major tertiary medical center (n=372, 49 Arabs). Demographic and clinical data were compared between ethnic groups. RESULTS: The prevalence of HS in Israeli Arabs was found to be 0.5%, fivefold higher than in Jews. Arab patients were younger (35.3 vs. 40.5 years, P < 0.001) and mostly male (52% vs. 35.7%, P < 0.001), with lower rates of co-morbidities, including smoking (40.8% vs. 55.7%, P < 0.001), hyperlipidemia, and depression as well as a higher rate of dissecting cellulitis (10.2% vs. 1.9%, P = 0.008). HS was more severe in Arabs, but of shorter duration, with mainly axillary involvement (79.6% vs. 57.9%, P = 0.004). Treatment with hormones was more common in Jews, and with biologic agents in Arabs. CONCLUSIONS: The findings suggest a different phenotype of HS in Arabs, warranting further study.

Ethnic disparities in complete and partial molar pregnancy incidence: a retrospective analysis of arab and jewish women in single medical center.

BACKGROUND: Molar pregnancies, encompassing complete and partial moles, represent a rare and enigmatic gestational disorder with potential ethnic variations in incidence. This study aimed to investigate relations of ethnicity with risks of complete and partial molar pregnancies within an Israeli population while accounting for age differences. METHODS: A retrospective study was conducted of data recorded during 2007-2021 in an academic medical center in Israel. The study population comprised 167 women diagnosed with complete or partial moles, for whom data were obtained through histological examination and P57 immunostaining. Maternal age and ethnicity were extracted from electronic medical records. Incidence rates were calculated per 10,000 live births, and a nested case-control study compared demographic characteristics and molar pregnancy incidences between Arab and Jewish women. Statistical analyses included age-adjusted comparisons, relative risk calculations and multivariate logistic regression. RESULTS: The overall risk of molar pregnancy was 22 per 10,000 live births (95% confidence interval [CI] 18-25). Among Arab women, the overall risk was 21 (95% CI 17-25), and for PM and CM: 14 (95% CI 11-17) and 7 (95% CI 5-10), respectively. Among Jewish women, the overall risk was 23 (95% CI 18-29), and for PM and CM: 12 (95% CI 8-17) and 11 (95% CI 7-16), respectively. Among Arab women compared to Jewish women, the proportion of all the partial moles was higher: (65.3% vs. 51.6%, p = 0.05). The incidence of partial mole was higher among Arab than Jewish women, aged 35-39 years (26 vs. 8 per 10,000, p = 0.041), and did not differ in other age groups. After adjusting for age, the relative risk of partial moles was lower among Jews than Arabs (0.7, 95% CI 0.4-1.0, p = 0.053). For Arab compared to Jewish women, the mean age at molar pregnancies was younger: 31.0 vs. 35.1 years. However, other factors did not differ significantly between Arab and Jewish women with molar pregnancies. In multivariate analysis, Jewish ethnicity was significantly associated with a higher risk of complete molar pregnancies (OR = 2.19, 95% CI 1.09-4.41, p = 0.028). CONCLUSION: This study highlights ethnic differences in molar pregnancy risk within the Israeli population. Jewish ethnicity was associated with a higher risk of complete molar pregnancies, while Arab women had a significantly higher risk of partial moles. These findings underscore the need to consider ethnicity when studying gestational disorders. Further research should seek to elucidate the underlying factors contributing to these differences.

[THE UNIMAGINABLE CONNECTION BETWEEN JEWISH DOCTORS AND THE GERMAN MEDICAL TRAINING SYSTEM DURING THE NAZI REGIME].

INTRODUCTION: In his important article, Prof. G. Eshel describes the story of three Jewish physicians who returned to Nazi Germany to complete their MD thesis despite laws prohibiting Jewish students from German Universities. The three physicians completed their MD thesis examination with the help of three German Professors who supported them regardless of the laws banning Jewish students. The three physicians risked their lives by returning to Nazi Germany, as did the three professors who supported them. The three physicians returned to Palestine upon completion of the requirement for their medical licensing and continued to contribute to the medical system for many years in the State of Israel. The determination of the three Jewish physicians and their courage teaches us an important lesson on the motivation of young doctors to complete their education and practice medicine. The support of the German professors created some lights in the great darkness of the Nazi regime. Generations of physicians took a stand on non-medical issues and contributed to social justice and the wellbeing of individuals beyond medical care. We should all continue this legacy.

The mental health impact of the October 7th terror attack on Jews and Arabs in Israel: A nationwide prospective study.

INTRODUCTION: On October 7, 2023, Israeli citizens came under an unprecedented terrorist attack that impacted the entire country. Recent research has begun to document the mental health impact of the attack but has yet to address the question of whether the attack had a differential impact across ethnic communities. In this nationwide prospective cohort study, we aimed to determine possible differences in psychopathology between Jews and Arabs in the post-October 7th attack. Specifically, we aimed to understand the role ethnicity may play in changes in probable PTSD, depression, and anxiety diagnoses from pre- to post-attack. METHODS: The sample comprised 656 participants (332 female, 50.7%) aged 18-85 (M = 41.01, SD = 13.72). Of this cohort, 557 participants (84.9%) were Jews, and 99 (15.1%) were Arabs, reflecting their national proportionality. Validated self-report questionnaires were completed to assess PTSD, depression, and anxiety at two time points: August 20 to 30th, 2023 (T1; 6-7 weeks before the attack) and November 9-19, 2023 (T2; 5-6 weeks after the attack). RESULTS: At T2, Arab Israeli participants reported significantly higher prevalences of probable PTSD, depression, and anxiety diagnoses than Jewish Israeli participants. A series of hierarchical logistic regressions revealed that, compared with Jews, Arab participants presented with higher prevalence of probable PTSD (OR = 2.53 95% CI = 1.46-4.37, p < 0.0001), depression (OR = 1.68 95% CI = 1.35-3.01, p < 0.0001) and anxiety (OR = 6.42 95% CI = 3.95-10.52, p < 0.0001), controlling for prevalences of probable diagnoses at T1 as well as for trauma-related variables. DISCUSSION: Citizens belonging to the Arab ethnic minority in Israel were found to be at higher risk for psychopathology in the aftermath of the October 7, 2023, terrorist attack compared with their Jewish majority counterparts. Thus, it becomes critical to employ culturally sensitive assessments and interventions following the attack to prevent the development of chronic symptoms and disorders.

Fragments of Alchemy from a Cairene Synagogue: Context, Codicology, and Contents of the Alchemical Corpus of the Cairo Genizah.

This article presents the results of a survey and a first assessment of the corpus of alchemical manuscripts retrieved from the Cairo Genizah, a storage room mainly intended for sacred writings that is attached to the Ben Ezra synagogue of Old Cairo. The alchemical manuscripts are described in their codicological and palaeographic features; their content is analysed in the context of the medieval production of alchemical texts in the surrounding Islamic world. The alchemical corpus of the Genizah represents a unique and widely unstudied source for our understanding of the relationship between Jews and alchemy in the medieval Mediterranean World.

Genetic diagnosis and detection rates using C9orf72 repeat expansion and a multi-gene panel in amyotrophic lateral sclerosis.

Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disorder. It is mostly sporadic, with the C9orf72 repeat expansion being the most common genetic cause. While the prevalence of C9orf72-ALS in patients from different populations has been studied, data regarding the yield of C9orf72 compared to an ALS gene panel testing is limited.We aimed to explore the application of C9orf72 versus a gene panel in the general Israeli population. A total of 140 ALS patients attended our Neurogenetics Clinic throughout 2018-2023. Disease onset was between ages 60 and 69 years for most patients (34%); however, a quarter had an early-onset disease (< 50 years). Overall, 119 patients (85%) were genetically evaluated: 116 (97%) were tested for the C9orf72 repeat expansion and 64 (54%) underwent gene panel testing. The C9orf72 repeat expansion had a prevalence of 21% among Ashkenazi Jewish patients compared to 5.7% in non-Ashkenazi patients, while the gene panel had a higher yield in non-Ashkenazi patients with 14% disease-causing variants compared to 5.7% in Ashkenazi Jews. Among early-onset ALS patients, panel testing was positive in 12% compared to 2.9% for C9orf72.We suggest a testing strategy for the Israeli ALS patients: C9orf72 should be the first-tier test in Ashkenazi Jewish patients, while a gene panel should be considered as the first step in non-Ashkenazi and early-onset patients. Tiered testing has important implications for patient management, including prognosis, ongoing clinical trials, and prevention in future generations. Similar studies should be implemented worldwide to uncover the diverse ALS genetic architecture and facilitate tailored care.

Why step in? Shifting justifications for bystander behaviors through interventions with youth in the Middle East.

Research shows positive bystander intervention effectively mitigates bullying experiences. Yet, more evidence regarding bystander responses to bias-based social exclusion (BSE) is needed in intergroup contexts, especially in the majority world and in areas of intractable conflict. This study assessed the effectiveness of skills and skills + contact-based interventions for BSE among 148 Palestinian Citizens of Israel (Mage = 10.55) and 154 Jewish-Israeli (Mage = 10.54) early adolescents (Girls = 52.32%) in Tel Aviv-Yafo. Bystander responses were assessed by participants' reactions to hypothetical BSE scenarios over three time points. Repeated measures ANOVAs revealed both interventions significantly increased positive and decreased negative bystander responses, with changes maintained at the follow-up. The opposite result pattern emerged for the control group. Findings suggest that both interventions can effectively encourage youth to publicly challenge BSE, even amidst intractable conflict.

Identity, culture, and feminism: Golda Meir - Israel's prime minister (1969-1974).

Like most historical leaders, Israel's fourth prime minister, Golda Meir, is a controversial figure. Some consider her the worst prime minister in Israel's history, who was responsible for Israel's lack of preparedness for the Yom Kippur War, and others perceive her to be the only 'man' who stood in the way of Arabs' countries victory over Israel. Some view her to be conservative, not brilliant, dogmatic, masculine, and racist, and some others, as a simple, modest, warm, and empathetic woman. The authors bridge between these two conflicting views by employing theories of identity, culture, and gender role bias to investigate how Golda Meir's early age trauma caused by pogroms against Jews, cultural transition between Russia, the USA, and Mandatory Palestine, and serving as a powerful woman leader in an all-men political system, influenced her personal and political behaviour and her public image.

The Nuremberg Racial Laws: The End of Jewish Medical Teaching in Germany. Who Were the Last Jewish Medical Professors in Berlin?

BACKGROUND: On 7 April 1933, the Nazi Law for the Restoration of the Professional Civil Service was enacted. The law triggered the dismissal of most Jewish medical staff from German universities. A few Jewish professors in Berlin were permitted to continue their academic activity with restrictions. Those professors were gradually dismissed as laws and restrictions were enforced. OBJECTIVES: To identify the last Jewish medical professors who, despite severe restrictions, continued their academic duties and prepared students for their examinations in Berlin after the summer of 1933. METHODS: We reviewed dissertations written by the medical faculty of Berlin from 1933 to 1937 and identified Jewish professors who mentored students during those years. RESULTS: Thirteen Jewish tutors instructed dissertations for the medical examinations after the Nazi regime seized power. They were employees of different university hospitals, including the Jewish hospitals. We did not identify Aryan students instructed by Jewish professors. The professors were active in different medical disciplines. Half of the reviewed dissertations were in the disciplines of surgery and gynecology. The last Jewish tutors were dismissed in October 1935. However, some of their studies were submitted for examination after that date. CONCLUSIONS: After the Nazi regime seized power, academic activities and medical research by Jewish professors declined but did not stop. However, these professors worked with only Jewish students on their theses. Most dissertations were approved and examined after the Jewish academics were dismissed by the university, in some cases even after they left Germany.

The moderating role of belongingness in the contribution of depression to suicide ideation following the October 7, 2023, terrorist attack in Israel: A nationwide prospective study.

INTRODUCTION: With >1300 civilians murdered, the terrorist attack of October 7 is one of the deadliest terrorist attacks in modern history. Previous research documented a sharp increase in depression in the aftermath of the attacks and the military conflict that followed. In this national prospective cohort study, we examined to what extent perceived belongingness (PB) moderates the association between depression and suicide ideation (SI) in the wake of the October 7th terrorist attack. METHODS: A representative sample of 710 Israeli adults (of them, 362 females, 51.1 %), Jews (557, 79.9 %), and Arabs (153, 20.1 %), aged 18-85 (M = 41.01, SD = 13.72) completed questionnaires assessing depression, current SI, and perceived belongingness at two timepoints: T1 (in August 2023) and T2 (in November 2023). RESULTS: Perceived belongingness at T1 predicted SI at T2 beyond demographic and trauma-related characteristics. Importantly, we found a significant interaction in which a PB at T1 moderated the link between depression and current SI at T2. Specifically, the level of depression at T2 contributed to current SI-T2 more strongly for individuals with low PB levels than for individuals with high PB levels. DISCUSSION: Our study highlights the impact of PB on SI following the October 7th terrorist attack. Clinicians treating individuals coping with depression should attend to their patients' sense of belongingness, as low PB comprises a significant risk factor for current SI. Moreover, community and national initiatives that could increase levels of PB among the citizens may help to diminish suicide risk in the aftermath of the attack.