Κυριακή 20 Φεβρουαρίου 2022

Interpretation of P16 expression as a marker of HPV in colorectal cancer

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Histol Histopathol. 2022 Feb 18:18439. doi: 10.14670/HH-18-439. Online ahead of print.

ABSTRACT

BACKGROUND: Colorectal cancer is one of the most prevalent types of tumors worldwide. P16ᴵᴺᴷ⁴ᵃ is a widely used immunohistochemical marker for high-risk HPV infection. The purpose of this study is to explore the relationship between P16 expression as an indicator of HPV infection and colorectal cancer in Egyptian patients, as well as its association with histopathological characteristics.

MATERIAL AND METHODS: The study was performed on 59 cases of colorectal carcinoma cases and 30 specimens of normal colonic mucosa.

RESULTS: p16 protein was detected in 22% (13 of 59) of patients with colorectal carcinoma. No evidence of P16 expression in all 30 cases of non-neoplastic colonic mucosa was found. More frequent expression of P16 was seen in distal carcinomas.

CONCLUSION: our study demonstrated that P16 protein is exp ressed in a reasonable percent of colorectal carcinoma cases, suggesting a role of HPV in colorectal carcinogenesis. The present study highlights the role of p16 protein expression which is important in the pathogenesis in colorectal carcinoma, especially regarding distal tumors.

PMID:35178697 | DOI:10.14670/HH-18-439

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Evaluation of the Bonebridge BCI 602 active bone conductive implant in adults: efficacy and stability of audiological, surgical, and functional outcomes

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Eur Arch Otorhinolaryngol. 2022 Feb 19. doi: 10.1007/s00405-022-07265-2. Online ahead of print.

ABSTRACT

PURPOSE: (1) To assess the effectiveness and safety of a bone-conduction implant, the Bonebridge BCI 602, in adults with conductive or mixed hearing loss. (2) To investigate whether the Bonebridge BCI 602 is at least as effective as the Bonebridge BCI 601 in such patients.

METHODS: The study group included 42 adults who had either conductive or mixed hearing loss. All patients underwent Bonebridge BCI 602 implant surgery. Before and after implantation, pure-tone audiometry, speech recognition tests (in quiet and noise), and free-field audiometry were performed. Word recognition scores were evaluated using the Polish Monosyllabic Word Test. Speech reception thresholds in noise were assessed using the Polish Sentence Matrix Test. Subjective assessment of benefits was done using the APHAB (Abbreviated Profile of Hearing Aid Benef it) questionnaire.

RESULTS: The APHAB questionnaire showed that difficulties in hearing decreased after BCI 602 implantation. Both word recognition in quiet and speech reception threshold in noise were significantly better after BCI 602 implantation and remained stable for at least 12 months. A significant advantage of the device is a reduced time for surgery while maintaining safety. In this study, the mean time for BCI 602 implantation was 28.3 min ± 9.4.

CONCLUSIONS: The second-generation Bonebridge BCI 602 implant is an effective hearing rehabilitation device for patients with conductive or mixed hearing loss. Patient satisfaction and audiological results confirm its efficacy and safety. Its new shape and dimensions allow it to be used in patients previously excluded due to insufficient or difficult anatomical conditions. The new BCI 602 implant is as effective as its predecessor, the BCI 601.

PMID:35182185 | DOI:10.1007/s00405-022-07265-2

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