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Copolymers and terpolymers of acrylonitrile (AN), methyl acrylate (MA), vinyl acetate (VA), and vinyl phosphonic acid (VPA) were synthesized. Thermal gravimetric analysis studies showed that the decomposition of PANMAVPA and PANVAVPA terpolymers started at lower temperatures than PANMA and PANVA copolymers. VPA and MA caused an increase in the ring formation of pendant nitrile groups and the total ash content of PANMAVPA terpolymer. During the thermal oxidative treatment (TOS) of PANVAVPA, the phosphonic acid moiety accelerated double bond formation via acetic acid elimination. 151–340 nm nanofibers were successfully produced from copolymers and terpolymers. [ABSTRACT FROM AUTHOR]

Background and Design: Morphea is also known as localized scleroderma. It is a rare autoimmune skin disease characterized by inflammation and sclerosis in the dermis and sometimes in the subcutaneous tissue. Laboratory findings, imaging, and histopathological features facilitate diagnosis and provide sufficient information about disease severity. Clinicopathologic correlations and severity factors in morphea are poorly described. Thus, this study aimed to review the clinical and histopathological features and treatment responses of patients with morphea and compare these features with disease activity and damage scores to identify new tools for assessing disease severity other than clinical findings. The applicability of the Localized Scleroderma Cutaneous Assessment Tool in clinical practice was also evaluated. Materials and Methods: This study reviewed data of 41 patients who had a histopathologically confirmed diagnosis of morphea and had been followed up regularly for at least 6 months. The modified Localized Scleroderma Skin Severity Index (mLoSSI), Localized Scleroderma Skin Damage Index (LoSDI), Physician Global Assessment-Activity (PGA-A), and Physician Global Assessment-Damage (PGA-D) were calculated at baseline and final treatment. Results: Among morphea subtypes, superficial morphea had significantly more sclerosis in the papillary dermis and plaque-type morphea had significantly more sclerosis in the reticular dermis (p<0.05). When positive antinuclear antibody (ANA) and high levels of thyroid autoantibodies were compared with mLoSSI, LoSDI, PGA-A, and PGA-D scores at baseline, no significant correlation was found. Comparison of the subgroups according to the initial mLoSSI and LoSDI scores revealed no significant histopathological differences between the groups. Conclusion: Although the mLoSSI, LoSDI, PGA-A, and PGA-D scores can be successfully used for the follow-up and treatment of patients with morphea, no correlation was found between positive ANA, high levels of thyroid autoantibodies, and histopathological features. [ABSTRACT FROM AUTHOR]

New di- or triamide organocatalysts derived from (L)-proline were synthesized and successfully used in the direct asymmetric aldol reaction of aliphatic ketones and aromatic aldehydes in water at 0 °C in the presence of benzoic acid as co-catalyst. (S)-methyl-2-((S)-3-hydroxy-2-((S)-3-pyrrolidine-2-carboxamido)propanamido)-3-phenylpropanoate (7c) as organocatalyst showed best results under these reaction conditions, and good diastereoselectivities (up to 99%), enantioselectivities (up to 98%) and yields (up to 91%) were observed. [ABSTRACT FROM AUTHOR]

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Low-grade salivary ductal carcinoma is a salivary gland tumor with clinically indolent behavior, characterized by intraductal growth. From 1996 to 2019, 54 case reports of Low-Grade Intraductal Carcinoma (LGIDC) were published in the literature. In the present article, we introduce a patient in our clinic who underwent surgery due to a diagnosis of LGIDC, about whom we make new clinical comments. A 75-year-old male patient presented to our clinic with a complaint of a mass in the right parotid area. After multiple biopsies, magnetic resonance imaging (MRI), and operations, the patient health is fine and patient's follow-up continues, now in the postoperative 1st year, and there is no relapse sign on physical examination and MRI. After all, according to our clinical findings and observations, we thought that this tumor could possibly be considered a locally aggressive tumor that does not metastasize, similar to a basal cell carcinoma. [ABSTRACT FROM AUTHOR]

Detection of thyroid carcinoma has been steadily increased in the past few decades. After the recognition of NIFTP, also gain importance to differentiate benign tumors (follicular adenoma) from follicular patterned variants of papillary thyroid carcinoma (invasive and infiltrative follicular variant papillary thyroid carcinoma), and low-risk lesions of thyroid (NIFTP). Follicular patterned proliferations of thyroid still persists as a battle for pathologists. In this study, we aimed to analyze the most commonly used immunohistochemical stains "HBME1, CK19, Galectin-3", adding the new ones "CD56, CD57, and p63". Study groups were; nodular hyperplasia, follicular adenoma, NIFTP, infiltrative follicular variant PTC, classical variant PTC (CVPTC) and follicular carcinoma. Each group consisted of twenty cases. The sections were stained with CD56, CD57, p63, CK19, HBME1 (Mesotel cell), Galectin-3 antibody. Although the expression of CD56 was high in benign follicular lesions, FC could not be excluded in this group. CD57 was high in malignant follicular group and NIFTP. Interestingly, p63 was found highly expressed in FVPTC, which might be promising to predict invasiveness in follicular group of lesions. CK19, Galectin- 3 and HBME1 were found quietly prominent in CVPTC in concordance with the previous reports. [ABSTRACT FROM AUTHOR]

Abstract The perspective of this study describes a new concept for ammonia borane (NH 3 BH 3 , AB) in the form of pellet composited with Co B catalyst to use as a hydrogen storage medium. For the purpose of this, hydrogen storage capacity and physical-chemical properties of composite pellet are examined and tested to investigate effects of specified environmental conditions by exposing pellets in temperature from 22 °C to 80 °C in a long period of time (1 day–4 months). A statistical strategy is provided to detail the investigation for significant differences between holding conditions and their interactions. These results suggest that the changing in holding time is more important than the temperature. The general point of view, there is no change in hydrogen storage properties when the composite pellets held at low temperature about 22 °C for 3 months, and the same trend is also preserved when the composites are kept at the higher temperature for a week. It is concluded that the composite pellets shown performance at hydrogen storage with easy handling and controlled hydrogen generation for on-board energy applications. Graphical abstract Energetic fuel cartridge include ammonia borane composite pellets for hydrogen generation. Image 1 Highlights • NH 3 BH 3 composite pellets were recommended for fuel cartridge systems. • The system provides highly safe, easily handling, practical usage. • Hydrogen production from pellets could be controlled. • The suggestion is keeping carriage environment below 50 °C. [ABSTRACT FROM AUTHOR]

Nervus abducens is a pure motor nerve located in the pons. It retracts the eyeball laterally by stimulating rectus lateralis muscle. In case of their paralysis, diplopia and restriction in the eye movements while looking sideways, are seen. Since the same signs are seen due to the muscle entrapment in blowout fractures, its differential diagnosis has importance in terms of the treatment protocol and avoiding unnecessary operations. In this article, we present a 22-year-old male patient who was referred to our department due to the prediagnosis of blowout fracture following maxillofacial trauma. However, he was diagnosed with abducens nerve paralysis after the consultations and analysis and his restriction of movement was resolved via systemic steroid treatment instead of unnecessary operation. [ABSTRACT FROM AUTHOR]

The parotid duct can be damaged in traumatic injuries and surgical interventions. Early diagnosis and treatment of a duct injury is of great importance because complications such as sialocele and salivary gland fistula may develop if the duct is not surgically repaired. We think the cuff of an intubation tube is an ideal material in parotid duct repair, because of its technical characteristics, easiness of availability, and low-cost. In this paper, we described the use of the cuff cannula of an intubation tube for the diagnosis and treatment of parotid duct laceration, as a low-cost and easy to access material readily available in every operating room. [ABSTRACT FROM AUTHOR]

Lipoma is the most common benign mesenchymal soft tissue tumor. It consists of mature adipocytes, usually located in subcutaneus tissues and occurs more frequently in obese patients. Subcutaneous lipoma is usually found in the head and neck regions. Vulvar lipoma is extremely rare. A 72-year-old obese woman was admitted to our hospital with a painless vulvar mass. Physical examination revealed a single, soft, mobile mass in the right vulvar area that measured about 15 cm in its widest dimensions. The excised specimen measured 13 cm and had a yellow cut surface, surrounded by a fibrous capsule. Microscopic examination confirmed the diagnosis of lipoma. Vulvar lipoma has benign clinical course. If this lesion is untreated, it may grow large. To exclude the possibility of malignancy, surgical excision must be performed. This case is one of the biggest vulvar lipoma cases reported in the Anglophone medical literature. [ABSTRACT FROM AUTHOR]

Leishmaniasis is a neglected parasitic disease that is widely seen in more than 60 countries worldwide, including Turkey and its subcontinental region. There are several chemotherapy agents for the treatment of leishmaniasis, including pentavalent antimonials—i.e., sodium stibogluconate (Pentostan) and meglumine antimoniate (Glucantim), pentamidine, conventional amphotericin B deoxycholate, miltefosine, paramomycin (aminosidine), and liposomal amphotericin B. However, these therapies are usually unsatisfactory due to dose-limiting toxicity issues and limited efficacy. Furthermore, resistance gained by parasites endangers future success of these therapies. Addressing these issues, the development of novel drugs with high efficacy has a vital importance. Latest studies have shown that bisnaphthalimidopropyl (BNIP) derivatives display high activity against Leishmaniasis parasites by selectively targeting parasitic sirtuin proteins and interacting with DNA. Despite the promising anti-parasitic activity, the low solubility and toxicity on human macrophages are the limitations to overcome. This study describes the new synthesis strategies for existing—i.e., BNIPDaoct and BNIPDanon—and novel BNIP derivatives differing in respect of their alkyl linker chain lengths. The new synthesis approach provides certain advantages compared to its existing alternatives reported in the literature. The proposed methodology does not only decrease the number of synthesis steps and production time of BNIPDaoct and BNIPDanon, but also provides higher yields, thereby making the synthesis highly cost-effective. [ABSTRACT FROM AUTHOR]

Objective: Meningiomas are extremely common tumors originating from meningeal coverings of the brain and spinal cord. Histopathological examination and grading of meningiomas give valuable prognostic information. The aim of this study was to evaluate clinical and histopathological parameters in meningiomas, find out significant factors impact on recurrence free survival. Materials and Methods: 125 consecutive meningioma cases diagnosed at Izmir Tepecik Training and Research Hospital between 2007 and 2012 were selected. Histopathological and clinical features were reevaluated. Follow up radiology records were reviewed to determine residual and recurrent tumor. Results: Female/ male ratio was 2/1, mean age was 59.5. Meningothelial (58.4%), transitional (16%), fibrous (4.8%) subtypes were most frequent ones. Of the 125 cases, 64.8% were located in cerebral convexity, 12% were in sphenoid wing. Grade distrubution was as follows: grade I (89.6%), grade II (9.6%), grade III (0.8%). We found statistically significant results between parenchymal invasion, necrosis, Ki67 index, histologic subtype and grade (p<0.01). Recurrent tumor was seen in 16 (12.8%), residual tumor was seen in 11 (8.8%) cases. Grade, parenchymal invasion, mitosis, Ki67 proliferation index were statistically significantly correlated with disease free survival (p=0.00). Conclusion: As a result our findings are consistent with the literature. The most useful criteria in grading meningiomas is mitosis. The criteria including small cell, sheeting, prominent nucleoli seem not very useful for the diagnosis of atypical meningiomas. Current World Health Organization classification has not included Ki67 proliferation index in grading although it seems as a useful criteria in predicting clinical outcome. [ABSTRACT FROM AUTHOR]

Detection of thyroid carcinoma has been steadily increased in the past few decades. After the recognition of NIFTP, also gain importance to differentiate benign tumors (follicular adenoma) from follicular patterned variants of papillary thyroid carcinoma (invasive and infiltrative follicular variant papillary thyroid carcinoma), and low-risk lesions of thyroid (NIFTP). Follicular patterned proliferations of thyroid still persists as a battle for pathologists. In this study, we aimed to analyze the most commonly used immunohistochemical stains "HBME1, CK19, Galectin-3", adding the new ones "CD56, CD57, and p63". Study groups were; nodular hyperplasia, follicular adenoma, NIFTP, infiltrative follicular variant PTC, classical variant PTC (CVPTC) and follicular carcinoma. Each group consisted of twenty cases. The sections were stained with CD56, CD57, p63, CK19, HBME1 (Mesotel cell), Galectin-3 antibody. Although the expression of CD56 was high in benign follicular lesions, FC could not be excluded in this group. CD57 was high in malignant follicular group and NIFTP. Interestingly, p63 was found highly expressed in FVPTC, which might be promising to predict invasiveness in follicular group of lesions. CK19, Galectin-3 and HBME1 were found quietly prominent in CVPTC in concordance with the previous reports.

Placenta accreta syndromes are associated with increased maternal mortality and morbidity. Cesarean hysterectomy is usually performed in cases of placenta accreta syndrome. Fertility sparing methods can be applied. In the present study, we report a successful segmental uterine resection method for placenta accreta in the anterior uterine wall in a cesarean section case. A 39-year-old woman underwent an elective cesarean section at 38 + 2 weeks. A placental tissue with an area of 10 cm was observed extending from the anterior uterine wall to the serosa, 2 cm above the uterine incision line. The placental tissue was removed with the help of monopolar electrocautery. The uterine incision was continuously sutured. The patient was discharged on the second postoperative day. The placental pathology was reported as placenta accreta. The American College of Obstetricians and Gynecologists (ACOG) generally recommends cesarean section hysterectomy in cases of placenta accreta because removal of placenta associated with significant hemorrhage. Conservative and fertility sparing methods include placenta left in situ, cervical inversion technique and triple-P procedure. There are several studies reporting that segmental uterine resection is performed with and without balloon placement or artery ligation. Segmental uterine resection may be an alternative to cesarean hysterectomy to preserve fertility or to protect the uterus in cases of placenta accreta when there is no placenta previa., Competing Interests: None to declare., (Thieme Revinter Publicações Ltda Rio de Janeiro, Brazil.)

Objectives: This study aims to investigate the role of KRAS/BRAF gene mutation in the pathogenesis of oropharyngeal squamous cell carcinoma (OSCC)., Patients and Methods: A total of 26 OSCC patients (23 males, 3 females; mean age 60 years; range 41 to 77 years) diagnosed between January 2003 and November 2013 were included in the study. The methods used in our study were quantitative fluorescence polymerase chain reaction for KRAS/BRAF mutation analysis., Results: Ten of the tumors were located at the tongue base, 12 in the tonsil and four at the floor of mouth. The mean tumor size was 3.8 cm. Six of the tumors were well differentiated, 18 were moderately differentiated and two were poorly differentiated. All cases were analyzed for KRAS and BRAF gene mutations and none of them showed gene mutations., Conclusion: We could not find any relation between OSCC and KRAS/BRAF gene mutations in our short case file. The role of mutations should be analyzed in larger series in OSCC to predict new targeted therapy modalities.