Publications by authors named "Rappold P"

This review examines the historical evolution of testicular cancer (TCa) treatment, emphasizing the transformative impact of World War II. Prior to the war, cases of more than 50 testicular tumors were exceedingly rare. The mobilization of American troops, especially after the German Blitz, resulted in widespread military health screenings, leading to a surge in incidental TCa diagnoses during the 1940s.

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  • * Researchers found that higher FOLH1 expression was linked to increased tumor angiogenesis but did not show a consistent relationship with immune features, and it positively impacted progression-free survival (PFS) in patients treated with sunitinib.
  • * The findings suggest that FOLH1 could be used as a noninvasive biomarker to guide treatment decisions for m-ccRCC patients, which may
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Introduction: In clear cell renal cell carcinoma (ccRCC), tumor-associated macrophage (TAM) induction of CD8+T cells into a terminally exhausted state has been implicated as a major mechanism of immunotherapy resistance, but a deeper biological understanding is necessary.

Methods: Primary ccRCC tumor samples were obtained from 97 patients between 2004 and 2018. Multiplex immunofluorescence using lymphoid and myeloid markers was performed in seven regions of interest per patient across three predefined zones, and geospatial analysis was performed using Ripley's K analysis, a methodology adapted from ecology.

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Background: Intratumoral heterogeneity (ITH) is a hallmark of clear cell renal cell carcinoma (ccRCC) that reflects the trajectory of evolution and influences clinical prognosis. Here, we seek to elucidate how ITH and tumor evolution during immune checkpoint inhibitor (ICI) treatment can lead to therapy resistance.

Methods: Here, we completed a single-arm pilot study to examine the safety and feasibility of neoadjuvant nivolumab in patients with localized RCC.

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Background: Transmembrane protein 27 (TMEM27/collectrin), a glycoprotein and homolog of angiotensin-converting enzyme 2 (ACE2), is a regulator of renal amino acid uptake in the proximal tubule and may have a protective role in hypertension. Two previous reports have shown that the absence of TMEM27 expression in clear cell renal cell carcinoma (ccRCC) correlates with poorer cancer-related survival. We report our findings of TMEM27 expression in ccRCC and clinical outcomes in an independent third cohort.

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Unlabelled: It is poorly understood how the tumor immune microenvironment influences disease recurrence in localized clear-cell renal cell carcinoma (ccRCC). Here we performed whole-transcriptomic profiling of 236 tumors from patients assigned to the placebo-only arm of a randomized, adjuvant clinical trial for high-risk localized ccRCC. Unbiased pathway analysis identified myeloid-derived IL6 as a key mediator.

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Introduction & Objectives: In systemic therapy trials, a decreasing neutrophil-to-lymphocyte ratio (NLR) after treatment for metastatic renal cell carcinoma (RCC) has been associated with improved oncologic outcomes. Paradoxically, for patients with localized RCC treated with upfront surgery the opposite effect has been reported. We thus aimed to evaluate NLR dynamics on localized RCC recurrence.

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  • SDHRCC and FHRCC are rare kidney cancers caused by the loss of key enzymes in the TCA cycle, specifically succinate dehydrogenase and fumarate hydratase.
  • A study analyzed genetic and metabolic differences between 42 tumors from patients with these cancers, revealing distinctive genomic alterations and varying metabolite accumulations.
  • The findings show that while both types of cancer share similar genetic causes, they have unique molecular characteristics, with SDHRCC showing lower mutation and copy number alteration burdens compared to FHRCC.
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  • The study focused on enhancing training for robotic surgery crisis management, specifically the emergency robotic undocking protocol (ERUP), which traditionally relied on anecdotal experiences.
  • Researchers evaluated a new training curriculum through simulations that involved high-stress surgical scenarios to assess baseline knowledge, confidence, and surgical performance metrics.
  • Results showed significant improvements in knowledge and confidence post-training, with participants reporting high cognitive demand and perceived realism, indicating that the curriculum was effective in preparing teams for real-life surgical emergencies.
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  • - The study examines next-generation sequencing to identify actionable genomic changes in renal cell carcinoma (RCC), analyzing data from a large clinical database and other cancer-related resources.
  • - Out of 753 RCC patients, only 15.3% had targetable genomic alterations, predominantly found in metastatic stage IV patients, compared to 9.1% in a broader cancer database.
  • - The research found low prevalence (around 5%) of alterations linked to immune-checkpoint blockade (ICB) therapy, with no clear associations based on the stage of the disease.
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Immune checkpoint blockade (ICB) is the foundation of current first-line therapies in patients with metastatic renal cell carcinoma (mRCC) with the potential for eliciting long-lasting remissions. With the expanding arsenal of ICB-based therapies, biomarkers of response are urgently needed to guide optimal therapeutic selection. We review the data behind ICB therapy in RCC, emerging biomarkers of response, and the evolving role of surgery in patients with mRCC.

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Mitochondrial dysfunction has been reported in both familial and sporadic Parkinson's disease (PD). However, effective therapy targeting this pathway is currently inadequate. Recent studies suggest that manipulating the processes of mitochondrial fission and fusion has considerable potential for treating human diseases.

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The herbicide paraquat (PQ) has increasingly been reported in epidemiological studies to enhance the risk of developing Parkinson's disease (PD). Furthermore, case-control studies report that individuals with genetic variants in the dopamine transporter (DAT, SLC6A) have a higher PD risk when exposed to PQ. However, it remains a topic of debate whether PQ can enter dopamine (DA) neurons through DAT.

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Abnormalities in mitochondrial function and epigenetic regulation are thought to be instrumental in Huntington's disease (HD), a fatal genetic disorder caused by an expanded polyglutamine track in the protein huntingtin. Given the lack of effective therapies for HD, we sought to assess the neuroprotective properties of the mitochondrial energizing ketone body, D-β-hydroxybutyrate (DβHB), in the 3-nitropropionic acid (3-NP) toxic and the R6/2 genetic model of HD. In mice treated with 3-NP, a complex II inhibitor, infusion of DβHB attenuates motor deficits, striatal lesions, and microgliosis in this model of toxin induced-striatal neurodegeneration.

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Aquaporin-4 (AQP4) is a primary influx route for water during brain edema formation. Here, we provide evidence that brain swelling triggers Ca(2+) signaling in astrocytes and that deletion of the Aqp4 gene markedly interferes with these events. Using in vivo two-photon imaging, we show that hypoosmotic stress (20% reduction in osmolarity) initiates astrocytic Ca(2+) spikes and that deletion of Aqp4 reduces these signals.

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Astrocytes play direct, active, and critical roles in mediating neuronal survival and function in various neurodegenerative disorders. This role of astrocytes is well illustrated in amyotrophic lateral sclerosis (ALS), in which the removal of glutamate from the extracellular space by astrocytes confers neuroprotection, whereas astrocytic release of soluble toxic molecules promotes neurodegeneration. In recent years, this context-dependent dual role of astrocytes has also been documented in experimental models of Parkinson's disease.

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Toxic organic cations can damage nigrostriatal dopaminergic pathways as seen in most parkinsonian syndromes and in some cases of illicit drug exposure. Here, we show that the organic cation transporter 3 (Oct3) is expressed in nondopaminergic cells adjacent to both the soma and terminals of midbrain dopaminergic neurons. We hypothesized that Oct3 contributes to the dopaminergic damage by bidirectionally regulating the local bioavailability of toxic species.

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Cyclooxygenase-2 is expressed at low levels in a subset of neurons in CNS and is rapidly induced by a multiplicity of factors including seizure activity. A putative relationship exists between cyclooxygenase-2 induction and glutamatergic neurotransmission. Cyclooxygenase-1 is constitutively expressed in glial cells and has been specifically linked to microglia.

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The purpose of this study was to identify the CNS cellular constituent immunoreactive for specific P2X7 receptor antiserum in the kainate-induced seizure and non-seizure rat brain. Analysis of P2X7 immunocytochemistry (ICC) revealed small immunoreactive cells with processes showing distinct morphological changes as seizures progressed in time. These morphological changes were reminiscent of reactive glia during CNS injury.

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This study examined visual analog scaling (VAS) judgments of disfluency by normal listeners in response to oral reading by speakers with spasmodic dysphonia (SD) and by nondysphonic controls, as well as the variables of frequency of occurrence of disfluencies, speaking rate, number of reading errors, and temporal acoustic measures of interword interval duration and articulation time. MANOVA yielded statistically significant differences between SD and control speakers for all variables except reading errors. Although no significant fluency-related differences were observed in terms of type of vocal spasm or voice tremor, significant differences in disfluency measures were obtained for clinical ratings of severity of dysphonia.

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This experiment examines the "strength" of auditory fusion for narrow-band noise pairs. Each pair of noise bands consisted of a target band and a flanker band presented simultaneously. The temporal envelopes of the noise bands within a pair fluctuated either in synchrony (synchronous condition) or not in synchrony (nonsynchronous condition).

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Lateralization of dichotic click pairs differing in time of onset was studied under conditions of angular acceleration, optokinetic stimulation, and gaze fixation. Data obtained from 20 subjects with normal hearing indicate poorer left-right judgment performance for small time differences, as well as shifts in subjective simultaneity, for all experimental conditions relative to control conditions. In addition, response times increased for the experimental conditions.

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