Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com

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Τρίτη 18 Οκτωβρίου 2022

Brief Report: Urine Tenofovir Levels Strongly Correlate with Virologic Suppression in Patients with HIV on Tenofovir Alafenamide-Based Antiretroviral Therapy

alexandrossfakianakis shared this article with you from Inoreader

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Abstract
We found that urine tenofovir (TFV) levels >1500 ng/ml strongly predict virologic suppression among patients with HIV taking tenofovir alafenamide (TAF, OR 5.66; 95% CI 1.59-20.14; p = 0.007). This suggests an existing point-of-care assay developed for tenofovir disoproxil fumarate (TDF) will support adherence monitoring for patients on all TFV-based antiretrovirals.
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The paradox of technology: Negativity bias in consumer adoption of innovative technologies

alexandrossfakianakis shared this article with you from Inoreader

Abstract

Innovative technologies often feature inherently conflicting properties. This poses a challenge for marketers because negative properties not only weigh heavily on consumers' technology adoption decisions but potentially do more so than positive ones. To shed light on the paradox of technology and its underlying processes, the present research develops a conceptual model drawing on technology adoption and valence perception theories about the prevalence of negativity bias in consumers' technology adoption decisions with its unique effect through the serial chain of consumers' perceptions of risk and trust regarding the technology. Results of three studies (N = 1309) demonstrate that the effect of negative valence consistently outperforms that of positive valence in consumers' technology adoption intentions (Studies 1–2) and decisions (Study 3). Furthermore, results show that the disproportionate effect of negative (vs. positive) valence can be expl ained by the proposed serial causal chain through consumers' perception of risk of the technology and trust in the technology (Studies 2–3) while ruling out company trust and consumer knowledge as alternative drivers of the effects (Study 3). These findings contribute to the pertinent literature on consumer psychology in decisions to adopt novel technologies in that they quantify and explain the potential outcome stemming from the ambiguous properties of novel technology. Moreover, this study finds negativity bias to be an often overlooked consumer bias with implications for marketing practice and useful for understanding and lowering resistance towards artificial intelligence technology.

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Adoption of adjuvant chemotherapy in high‐risk salivary gland malignancies

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Abstract

Background

The present study characterizes national trends in the utilization of adjuvant chemotherapy to treat salivary gland malignancies.

Methods

The National Cancer Database was queried for salivary gland malignancies treated by surgery with radiation in 2004–2019. Proportions of patients receiving adjuvant chemotherapy over the study period were analyzed by linear regression. The impact of chemotherapy on overall survival was assessed using Kaplan–Meier and Cox proportional hazards analyses.

Results

Among 15 965 patients meeting inclusion criteria, 2355 (14.8%) received adjuvant chemotherapy. Chemotherapy utilization significantly increased from 4.9% to 16.5% over the study period (p < 0.001). No survival benefit was observed with adjuvant chemotherapy on propensity score-matched Kaplan–Meier analysis (HR: 0.98; 95% CI: 0.86–1.11; p = 0.72) or multivariable Cox regression (HR: 0.92; 95% CI: 0.78–1.09; p = 0.34).

Conclusions

Adjuvant chemotherapy has been increasingly utilized to treat salivary gland malignancies in recent years. Our findings highlight the importance of obtaining high-quality prospective data regarding the benefit of chemotherapy.

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Microelectrodes and radiofrequency for transoral horizontal supraglottic laryngectomy in T3 tumors

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Abstract

The aim of this manuscript is to show the surgical technique for horizontal supraglottic laryngectomy in T3 carcinomas by a transoral approach using microelectrodes and radiofrequency. From 2009 to 2020, 11 selected cases of T3 laryngeal supraglottic carcinomas invading the pre-epiglottic space, with preserved vocal cords mobility underwent surgery. The technique is described step by step. Average time duration of the larynx surgery was 95 min. Nine percent of the patients presented a profuse hemorrhage 7 days postoperative; in 73% of patients the nasogastric feeding tube was withdrew 10 days after surgery. We emphasize a remarkable short surgical time and high hemostatic effectiveness. The ME tips allow to perform cuts at angles and contribute with a sense of touch. The low cost of the equipment and its easy handling and maintenance is a remarkable advantage over other technologies for transoral surgery.

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Tamoxifen Alters TGF‐β1/Smad Signaling in Vocal Fold Injury

alexandrossfakianakis shared this article with you from Inoreader
Tamoxifen Alters TGF-β1/Smad Signaling in Vocal Fold Injury

This study investigated the effects of tamoxifen on acute vocal fold injury in a preclinical model. The antifibrotic actions of tamoxifen appear to be mediated by transforming growth factor beta 1/Smad signaling providing a novel target for intervention.


Objectives

Effective treatments for vocal fold fibrosis remain elusive. Tamoxifen (TAM) is a selective estrogen receptor modulator and was recently reported to have antifibrotic actions. We hypothesized that TAM inhibits vocal fold fibrosis via altered transforming growth factor beta 1 (TGF-β1) signaling. Both in vitro and in vivo approaches were employed to address this hypothesis.

Methods

In vitro, vocal fold fibroblasts were treated with TAM (10−8 or 10−9 M) ± TGF-β1 (10 ng/ml) to quantify cell proliferation. The effects of TAM on genes related to fibrosis were quantified via quantitative real-time polymerase chain reaction. In vivo, rat vocal folds were unilaterally injured, and TAM was administered by oral gavage from pre-injury day 5 to post-injury day 7. The rats were randomized into two groups: 0 mg/kg/day (sham) and 50 mg/kg/day (TAM). Histological changes were examined on day 56 to assess tissue architecture.

Results

TAM (10−8 M) did not affect Smad3, Smad7, Acta2, or genes related to extracellular matrix metabolism. TAM (10−8 or 10−9 M) + TGF-β1, however, significantly increased Smad7 and Has3 expression and decreased Col1a1 and Acta2 expression compared to TGF-β1 alone. In vivo, TAM significantly increased lamina propria area, hyaluronic acid concentration, and reduced collagen deposition compared to sham treatment.

Conclusions

TAM has antifibrotic potential via the regulation of TGF-β1/Smad signaling in vocal fold injury. These findings provide foundational data to develop innovative therapeutic options for vocal fold fibrosis.

Level of Evidence

NA Laryngoscope, 2022

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Early maladaptive schemas and ICD‐11 CPTSD symptoms: Treatment considerations

alexandrossfakianakis shared this article with you from Inoreader

Abstract

Objectives

Early maladaptive schemas (EMS) can result from adverse interpersonal traumatic experiences. The ICD-11 updated the concept of disorders following traumatic experiences with the new disorder of complex post-traumatic stress disorder (CPTSD). There is now a need to develop and test interventions for CPTSD. An essential step in identifying interventions that are particularly relevant to the treatment of CPTSD is to explore psychological constructs associated more closely with CPTSD compared to PTSD. The current study explored the associations of EMS with PTSD and CPTSD.

Design

The sample consisted of 603 adults (mean age = 41.65, SD = 13.8), recruited through social media and e-mails, and who responded to an online questionnaire.

Methods

Participants completed measures of demographic, traumatic life events, EMS, PTSD and CPTSD symptoms.

Results

Overall, results suggest that participants with CPTSD present with higher schema elevations across all schemas compared to those with PTSD or no diagnosis. Secondly, the schemas of emotional deprivation, abandonment/instability, social isolation/alienation, defectiveness/shame, enmeshment/undeveloped self, subjugation, emotional inhibition and insufficient self-control/self-discipline were significantly associated with the symptom clusters of CPTSD. Finally, results indicate that different schemas form significant associations with the individual symptom clusters of CPTSD.

Conclusions

Although results require replication in clinical samples, initial findings suggest that specific EMS may be important psychological correlates of CPTSD symptoms. Wider treatment considerations of these findings are discussed.

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