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Τετάρτη 25 Νοεμβρίου 2020

Analysis of the Curative Effect of Alexandrite Laser in the Treatment of Venous Lake of Lips

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Background and Objectives

Laser is being widely used in clinical treatment nowadays, including 755 nm Alexandrite laser [1,2]. This study was conducted to examine the clinical outcome of long‐pulse 755 nm Alexandrite laser in the treatment of venous lake of the lip.

Study Design/Materials and Methods

Forty‐one patients (2015–2019) were reviewed. The clinical outcomes were assessed 1 month after the treatment. The efficacy of the treatment was classified into four categories: basic recovery (most optimal outcome), effective, improvement, and ineffective (least favorable outcome). Adverse reactions were also recorded.

Results

Thirty‐three (80.49%) patients achieved basic recovery and 8 (19.51%) were effective; 29 (70.73%) recovered after receiving one treatment, 3 (7.32%) recovered after receiving two treatments, and 1 (2.44%) recovered after three treatments.

Conclusion

Long‐pulse 755 nm Alexandrite laser is an effective treatment for the venous lake of the lip. Lasers Surg. Med. © 2020 Wiley Periodicals LLC

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Treatment of Pain in Keloids Using Only a Long‐Pulsed 1064 nm Nd:YAG Laser

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Background and Objective

Keloids are benign lesions arising from overproduction of the extracellular matrix and abnormal collagen deposition by dermal fibroblasts. This altered wound healing typically occurs in response to dermal trauma. Keloid treatment poses a challenge due to the variable nature of treatment response, which can be affected by the size, appearance, and associated symptoms of erythema, pruritus, and pain. Recently, successful treatment of keloids has been reported using the Nd:YAG laser in conjunction with 5‐fluorouracil and intralesional corticosteroids. We present a series of patients with symptomatic keloids, who we treated with only a 1064 nm Nd:YAG laser.

Study Design/Materials and Methods

Eight patients of Fitzpatrick skin types I–VI presented for treatment of keloids with associated symptoms of pain. The keloids were most commonly located on the trunk, and seven patients had intralesional steroid injections prior to presentation with persistence of symptoms. Patient treatment consisted of two passes under a long‐pulsed 1064 nm Nd:YAG laser with a 10 mm spot size, a fluence of 18–19 J/cm2, and 60 ms pulse duration every 3–8 weeks. Patient‐reported pain scores were collected before and after treatment.

Results

Following treatment, transient erythema and mild edema were noted at the treatment site. All patients reported improvement in the symptoms of pain, with an average of a 5‐point reduction using a 10‐point scale (R: 2–10). Five out of eight patients had total resolution of their pain. An average of 3.25 treatments (R:1–5) were needed for patients to first notice an improvement in the pain. A Wilcoxon signed‐rank test showed that treatment with a 1064 nm laser elicited a statistically significant improvement in pain in individuals with keloids (Z = 2.46, P = 0.01). No patients in our study suffered any scarring or pigment changes as a result of these treatments.

Conclusion

Keloids are a common condition with variable rates of treatment satisfaction. Lasers have been used in an attempt to improve clinical appearance and associated symptoms. We report a significant reduction in pain for patients treated exclusively with a 1064 nm Nd:YAG laser. Lasers Surg. Med. © 2020 Wiley Periodicals LLC

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99mTc-PSMA SPECT/CT Versus 68Ga-PSMA PET/CT in the Evaluation of Metastatic Prostate Cancer

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Background 99mTc–prostate-specific membrane antigen (PSMA) SPECT/CT is less expensive and readily available modality compared with 68Ga-PSMA PET/CT for imaging prostate cancer (PC). The aim of this study is to compare the value of these 2 modalities in patients confirmed or suspicious to have metastatic prostate cancer. Patients and Methods Twenty-two patients with the mean age of 66.6 ± 10.1 years were studied using 99mTc-PSMA SPECT/CT and 68Ga-PSMA PET/CT, with less than 7 days interval between the 2 imaging procedures. Whole-body PET/CT was done 60 minutes after IV injection of 185 MBq (5 mCi) of 68Ga-PSMA. 99mTc-PSMA SPECT/CT was performed 3 hours after IV injection of 555 to 740 MBq (15–20 mCi) of 99mTc-PSMA. The images of each modality were interpreted independently, and the results were compared according to patient-based as well as region-based analyses. Results In patient-based evaluation, both 99mTc-PSMA SPECT/CT and 68Ga-PSMA PET/CT scans were positive in 95.45% (21/22). In region-based evaluation, 68Ga-PSMA PET/CT detected 53 regions (median of 2 regions per patient; range, 0–5), whereas 43 (median of 2 regions per patient; range, 0–5) were detected by 99mTc-PSMA SPECT/CT. Most of these differences could be explained by lower detection rate of 99mTc-PSMA SPECT/CT in prostate bed (n = 6). PET/CT detected more involved regions than SPECT/CT (P = 0.007), whereas similar frequency of extraprostatic lesions were diagnosed in both modalities (P = 0.102). Significant correlation was also demonstrated between serum prostate-specific antigen level and imaging parameters of disease extension detected by 2 modalities. Conclusions 99mTc-PSMA SPECT/CT could be a potential substitute for 68Ga-PSMA PET/CT in high-risk patients, except when evaluation of prostate bed is of major concern. Received for publication June 6, 2020; revision accepted October 5, 2020. Conflicts of interest and sources of funding: none declared. Correspondence to: Davood Beiki, PhD, Research Center for Nuclear Medicine, Shariati Hospital, Tehran University of Medical Sciences, North Kargar Ave 1411713135, Tehran, Iran. E-mail: beikidav@sina.tums.ac.ir. Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.
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18F-FDG PET and 18F-FDG PET/CT in Vulvar Cancer: A Systematic Review and Meta-analysis

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Aim The aims of this study were to determine the role of 18F-FDG PET/CT in vulvar cancer patients and to extract summary estimates of its diagnostic performance for preoperative lymph node staging. Patients and Methods PubMed/Medline and Embase databases were searched to identify studies evaluating 18F-FDG PET/CT in vulvar cancer patients. The assessment of methodological quality of the included articles was performed. Per-patient and per-groin pooled estimates, with 95% confidence intervals (CIs), of sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and diagnostic odds ratio (DOR) were calculated. Results Ten articles were included in the systematic review, 7 among which evaluated the diagnostic performance of preoperative 18F-FDG PET/CT for lymph node staging. Qualitative per-patient analysis (72 patients from 4 studies) resulted in estimated pooled sensitivity, specificity, PPV, NPV, and DOR of 0.70 (95% CI, 0.44–0.95), 0.90 (95% CI, 0.76–1.04), 0.86 (95% CI, 0.66–1.06), 0.77 (95% CI, 0.56–0.97), and 10.49 (95% CI, 1.68–65.50), respectively. Qualitative per-groin analysis (245 groins from 5 studies) resulted in estimated pooled sensitivity, specificity, PPV, NPV, and DOR of 0.76 (95% CI, 0.57–0.94), 0.88 (95% CI, 0.82–0.94), 0.70 (95% CI, 0.55–0.85), 0.92 (95% CI, 0.86–0.97), and 19.43 (95% CI, 6.40–58.95), respectively. Conclusions Despite limited literature data, this systematic review and meta-analysis revealed that a negative preoperative PET/CT scan may exclude groin metastases in at least early-stage vulvar cancer patients currently unfit for sentinel node biopsy and select those eligible for a less invasive surgical treatment. A positive PET/CT result should otherwise be interpreted with caution. Larger prospective studies are needed to confirm these results and to evaluate the diagnostic value of standardized semiquantitative analysis compared with the qualitative one. Received for publication August 13, 2020; revision accepted October 2, 2020. Conflicts of interest and sources of funding: none declared. Correspondence to: Vittoria Rufini, MD, UOC Medicina Nucleare, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli, 8-00168 Rome, Italy. E-mail: vittoria.rufini@unicatt.it. Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.
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Comparative Performance of 99mTc-TRODAT-1 SPECT/CT and 18F-FDOPA PET/CT Imaging in Patients With Parkinson’s Disease, Parkinson-Plus Syndrome, and Essential Tremor

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Purpose The aim of this study was to assess the utility of presynaptic dopaminergic imaging using 99mTc-TRODAT-1 SPECT/CT and 18F-FDOPA PET/CT and compare their performance in Parkinson's disease (PD), Parkinson-plus syndrome (PPS), and essential tremor (ET). Patients and Methods A total of 103 patients (PD = 48, PPS = 19, and ET = 36) were enrolled prospectively. Hoehn and Yahr (H&Y) staging and MDS-UPDRS (Movement Disorder Society–Sponsored Revision of Unified Parkinson's Disease Rating Scale) were done for PD and PPS cases. All the patients underwent 99mTc-TRODAT-1 SPECT/CT and 18F-FDOPA PET/CT brain scan. The scans were analyzed visually and semiquantitatively. Average pixel count and SUVmean of the striatum were calculated in SPECT and PET images, respectively, to calculate the specific uptake ratio of striatum (SUR). Comparison of scan findings and SURs among different groups and correlation with clinical characteristics was done. Results Symmetrical comma-shaped uptake was seen in bilateral striatum in ET cases with mean SURs significantly higher than in cases of early PD (H&Y stage I and II, n = 37), PD and PPS both on SPECT and PET images (P ≤ 0.001). The mean SURs between PD and PPS showed no significant difference (SPECT, P = 0.17; PET, P = 0.61). Substantial agreement (weighted κ = 0.659) was found between 99mTc-TRODAT-1 and 18F-FDOPA for the detection of presynaptic dopaminergic dysfunction. Specific uptake ratio of striatum correlation between SPECT and PET was statistically significant (r = 0.67; P
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90Y Radiosynovectomy in Persistent Synovitis Caused by Knee Replacement: Long-Term Outcome

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Introduction After knee replacement, therapy resistant, persistent synovitis is a common issue, which causes effusion and pain, and leads to loosing. It has been hypothesized that radiosynovectomy (RSO) is useful in these patients. Materials and Methods A cohort of 55 patients with 57 knee replacements and persistent synovitis underwent RSO using 4.9 ± 0.24 mCi (182 ± 9 MBq) of 90Y-citrate. The number of RSOs ranged from 1 to 4. Bone scans before and 3 months after every RSO were performed. Long-term follow-up ranged from 0.8 to 7.6 years with a mean of 23.2 months. For qualitative analysis, an established 4 steps scoring was used. For quantification, the uptake was determined within the 99mTc-MDP scintigraphy blood pool phase before and after therapy. Results Long-term response was in 27% with excellent, 24% good, 30% weak, and 20% no response. The duration of response was 12.0 ± 12.0 months (maximum, 54 months). In patients with repeated treatment, the effect after the first therapy was lesser than in patients who received a single treatment in total. However, 3 months after the last RSO, patients with repeated treatment showed a similar effectiveness than single treated patients. At the end of long-term follow-up, patients with repeated RSOs had a higher effectiveness at similar duration response. In bone scan, 65% of patients showed a reduction of uptake. When comparing subjective and objective response, 78% of patients showed a concordance in both symptoms and scintigraphy. Pilot histological analysis revealed that the synovitis is triggered by small plastic particles. Conclusions We concluded that RSO is an effective therapy in patients with knee replacement and persistent synovitis with high long-term response. Repeated treatment leads to a stronger long-time response. Received for publication August 21, 2020; revision accepted October 2, 2020. K.L. and M.B. equally contributed. Conflicts of interest and sources of funding: K.L. is a consultant of Serene LCC. M.B. declares that no funding was applicable. The authors declare that no ethics approval and consent to participate were necessary. The authors have consent of publication for their data. The used data and materials are available and can be requested. The licenses of used software are available. Correspondence to: Knut Liepe, MD, PhD, MHBA, Department of Nuclear Medicine, Klinikum Frankfurt (Oder), Muellroser Chaussee 7, 15236 Frankfurt (Oder), Germany. E-mail: knut.liepe@klinikumffo.de. Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.
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Postorthodontic lower incisor and canine inclination and labial gingival recession in adult patients

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Abstract

Purpose

The goal was to determine whether changes in the inclination of lower incisors and canines upon orthodontic treatment with fixed appliances poses a threat for labial gingival recession in adult patients.

Methods

The sample of this prospective clinical trial consisted of 32 adult patients (mean age 25.08 ±6.50 years) treated with fixed appliances. Plaque and bleeding indices, probing pocket depth, clinical attachment level, gingival recession height (GR) and width (GRW), gingival thickness (GT), and keratinized tissue width were clinically recorded, while cone beam computed tomography (CBCT) was used to evaluate teeth inclination before (T1) and after treatment (T2). Oral hygiene, brushing habits, and smoking were controlled.

Results

During orthodontic treatment on 15 (8.33%) teeth (10 incisors and 5 canines), spontaneous complete improvement of pre-existing GR was observed. On 2 incisors, GR decreased and on 3 teeth GR did not change. Moreover, 1 incisor presented an increased GR, while 2 teeth developed new defects. Mean GR, GRW, and GT decreased significantly only on the incisors. Proclination of incisors and canines during treatment (compared with retroclination of the teeth) implicated a lower reduction in GR at T2: 0.19 mm (p = 0.034) and 0.18 mm (p = 0.037), respectively. Multiple regression analysis confirmed that more tooth proclination was associated with a higher risk for an increase in GR (p < 0.00).

Conclusion

Properly planned changes in lower incisor and canine inclination can be carried out in adult patients without posing a high risk to labial gingival recessions if the individual periodontal biotype is respected. The reported outcomes underscore the orthodontic principle to keep tooth roots inside the alveolar bone.

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G protein-coupled receptor-associated sorting proteins: function and relevant disorders.

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G protein-coupled receptor-associated sorting proteins: function and relevant disorders.

Yi Chuan. 2020 Aug 20;42(8):713-724

Authors: Zhang M, Liang LH, Lu YJ, Cao X

Abstract
G protein-coupled receptors (GPCRs), the largest family of membrane protein receptors, can be activated by a variety of ligands and participate in signaling transduction, and they are essential in the physiologic process in vivo. GPCR-associated sorting proteins (GASPs) play an important role in the post-endocytic sorting of GPCRs. They mediate the degradation or recycling pathway, and regulate cell signaling transduction and other biological processes. The functional defects of GASPs have been reported to be implicated in pathogenesis of some neurological diseases, tumors and deafness and so on. In this review, we summarize the GASPs' function, GPCR-GASP interactions, GPCR sorting pathway and GASP-related signaling pathways implicated in the transcriptional regulation. It could help to understand the potential linkage between GASPs' dysfunction and diseases, and provide a new approach and strategy for the treatment of GASP-related diseases.

PMID: 32952108 [PubMed - indexed for MEDLINE]

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Parenting a child with congenital cytomegalovirus infection: a qualitative study.

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Parenting a child with congenital cytomegalovirus infection: a qualitative study.

BMJ Paediatr Open. 2020;4(1):e000844

Authors: Vandrevala T, Barber V, Mbire-Chigumba E, Calvert A, Star C, Khalil A, Griffiths P, Book AS, Book GM, Heath P, Jones CE

Abstract
Background: Congenital cytomegalovirus (CMV) is the most common infectious cause of congenital disability, which can cause lifelong impairments including sensorineural hearing loss and developmental delay. This study aimed to explore the experiences of parenting a child with congenital CMV and the impact this has on families.
Methods: Ten parents living with a child with congenital CMV in the UK participated in semistructured interviews and data were analysed using thematic analysis.
Results: The findings illustrate that delays in making the diagnosis of congenital CMV are associated with parental distress and lack of knowledge about CMV among medical professionals can exacerbate this distress. Parents expressed frustration about not knowing about CMV infection during their pregnancies and therefore not having the opportunity to take measures to reduce their risk of acquiring CMV while pregnant. The uncertainty about the long-term outcomes of children with congenital CMV adds additional emotional burden for parents. Family and wider societal networks have the potential to facilitate coping and alleviate stress, but the lack of awareness of CMV acts as a barrier to receiving support from family and friends.
Conclusions: There is a need to increase awareness of CMV among medical professionals, pregnant women and wider society to improve the diagnostic process and to provide better support for families caring for children with congenital CMV infection.

PMID: 33225083 [PubMed]

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Two novel likely pathogenic variants of HARS2 identified in a Chinese family with sensorineural hearing loss.

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Two novel likely pathogenic variants of HARS2 identified in a Chinese family with sensorineural hearing loss.

Hereditas. 2020 Nov 24;157(1):47

Authors: Yu J, Jiang W, Cao L, Na X, Yang J

Abstract
Mutations in HARS2 are one of the genetic causes of Perrault syndrome, characterized by sensorineural hearing loss (SNHL) and ovarian dysfunction. Here, we identified two novel putative pathogenic variants of HARS2 in a Chinese family with sensorineural hearing loss including two affected male siblings, c.349G > A (p.Asp117Asn) and c.908 T > C (p.Leu303Pro), through targeted next-generation sequencing methods. The two affected siblings (13 and 11 years old) presented with early-onset, rapidly progressive SNHL. The affected siblings did not have any inner ear malformations or delays in gross motor development. Combined with preexisting clinical reports, Perrault syndrome may be latent in some families with non-syndromic deafness associated with HARS2 mutations. The definitive diagnosis of Perrault syndrome based on clinical features alone is a challenge in sporadic males, and preadolescent females with no signs of POI. Our findings further expanded the existi ng spectrum of HARS2 variants and Perrault syndrome phenotypes, which will assist in molecular diagnosis and genetic counselling of patients with HARS2 mutations.

PMID: 33228777 [PubMed - in process]

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Ultrarare heterozygous pathogenic variants of genes causing dominant forms of early-onset deafness underlie severe presbycusis.

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Ultrarare heterozygous pathogenic variants of genes causing dominant forms of early-onset deafness underlie severe presbycusis.

Proc Natl Acad Sci U S A. 2020 Nov 23;:

Authors: Boucher S, Wong Jun Tai F, Delmaghani S, Lelli A, Singh-Estivalet A, Dupont T, Niasme-Grare M, Michel V, Wolff N, Bahloul A, Bouyacoub Y, Bouccara D, Fraysse B, Deguine O, Collet L, Thai-Van H, Ionescu E, Kemeny JL, Giraudet F, Lavieille JP, Devèze A, Roudevitch-Pujol AL, Vincent C, Renard C, Franco-Vidal V, Thibult-Apt C, Darrouzet V, Bizaguet E, Coez A, Aschard H, Michalski N, Lefevre GM, Aubois A, Avan P, Bonnet C, Petit C

Abstract
Presbycusis, or age-related hearing loss (ARHL), is a major public health issue. About half the phenotypic variance has been attributed to genetic factors. Here, we assessed the contribution to presbycusis of ultrarare pathogenic variants, considered indicative of Mendelian forms. We focused on severe presbycusis without environmental or comorbidity risk factors and studied multiplex family age-related hearing loss (mARHL) and simplex/sporadic age-related hearing loss (sARHL) cases and controls with normal hearing by whole-exome sequencing. Ultrarare variants (allele frequency [AF] < 0.0001) of 35 genes responsible for autosomal dominant early-onset forms of deafness, predicted to be pathogenic, were detected in 25.7% of mARHL and 22.7% of sARHL cases vs. 7.5% of controls (P = 0.001); half were previously unknown (AF < 0.000002). MYO6, MYO7A, PTPRQ, and TECTA variants were present in 8.9% of ARHL cases but less than 1% of controls. Evidence for a causal role of variants in presbycusis was provided by pathogenicity prediction programs, documented haploinsufficiency, three-dimensional structure/function analyses, cell biology experiments, and reported early effects. We also established Tmc1 N321I/+ mice, carrying the TMC1:p.(Asn327Ile) variant detected in an mARHL case, as a mouse model for a monogenic form of presbycusis. Deafness gene variants can thus result in a continuum of auditory phenotypes. Our findings demonstrate that the genetics of presbycusis is shaped by not only well-studied polygenic risk factors of small effect size revealed by common variants but also, ultrarare variants likely resulting in monogenic forms, thereby paving the way for treatment with emerging inner ear gene therapy.

PMID: 33229591 [PubMed - as supplied by publisher]

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