A comprehensive spectroscopic study of the polymorphs of diflunisal and their phase transformations

Understanding phase transitions in pharmaceutical materials is of vital importance for drug manufacturing, processing and storage. In this paper we have carried out comprehensive high-resolution spectroscopic studies on the polymorphs of the non-steroidal anti-inflammatory drug diflunisal that has four known polymorphs, forms I-IV (FI-FIV), three of which have known crystal structures. Phase transformations during milling, heating, melt-quenching and exposure to high relative humidity were investigated using Raman and terahertz spectroscopy in combination with differential scanning calorimetry and X-ray powder diffraction. The observed phase transformations indicate the stability order FIII>FI>FII, FIV. Furthermore, crystallization experiments from the gas phase and from solution by fast evaporation of different solvents were carried out. Fast evaporation of an ethanolic solution below 70°C was identified as a reliable and convenient method to obtain the somewhat elusive FII in bulk quantities.This work was supported by Science Foundation Ireland under Grant No. [12/RC/2275] as part of the Synthesis and Solid State Pharmaceutical Centre (SSPC). ARP would like to acknowledge ICHEC, Irish HPC system for computing time on the condominium access (nuig02). ARP also acknowledges the RIA Charlemont grant for financial support of a research visit to the University of Cambridge

"I have got something positive out of this situation": psychological benefits of caregiving in relatives of young people with muscular dystrophy.

This paper focuses on the psychological benefits of caregiving in key relatives of patients with muscular dystrophies (MD), a group of rare diseases characterized by progressive weakness and restriction of the patient's functional abilities. We describe whether relatives perceived caregiving to be a positive experience and test whether relatives' perceptions vary in relation to their view of the patient as a valued person, the degree of involvement in care, and the level of support provided by social network and professionals. The study sample included 502 key relatives of patients aged 4-25 years, suffering from Duchenne, Becker, or limb-girdle MD, in treatment for at least 6 months to one of the eight participating centers, living with at least one relative aged 18-80 years. Of key relatives, 88 % stated that they had gotten something positive out of the situation, 96 % considered their patients to be sensitive, and 94 % viewed their patients as talented. Positive aspects of caregiving were more recognized by key relatives who were more convinced that the patient was sensitive and who perceived that they received higher level of professional help and psychological social support. These results suggest that most key relatives consider that their caregiving experience has had a positive impact on their lives, despite the practical difficulties of caring for patients with MD. Professionals should help relatives to identify the benefits of caregiving without denying its difficulties. Clinicians themselves should develop positive attitudes towards family involvement in the care of patients with long-term diseases

Risk of Kaposi's sarcoma and of other cancers in Italian renal transplant patients

A follow-up study of 1844 renal transplant patients in Italy showed a 113-fold increased risk for Kaposi's sarcoma. Kaposi's sarcoma risk was higher in persons born in southern than in northern Italy. Significant increases were also observed for cancers of the lip, liver, kidney and for non-Hodgkin's lymphoma

ANALISIS MUTU FISIK DAN CITARASA BEBERAPA VARIETAS KOPI ARABIKA GAYO AKIBAT PENUNDAAN PROSES PULPING

Selama abad terakhir ini pemanasan global yang terjadi berdampak terhadap peningkatan suhu. Dengan meningkatnya suhu, masa panen kopi menjadi lebih singkat. Singkatnya masa panen kopi memiliki masalah dikalangan petani karena kapasitas pemanenan yang meningkat dalam kurun waktu panen yang semakin pendek. Untuk mencapai pemanenan yang tepat waktu, petani biasanya cenderung lebih memilih menunda proses pulping karena kapasitas tenaga kerja yang terbatas. Penelitian ini bertujuan untuk mempelajari berapa lama waktu penundaan proses pulping yang masih bisa ditoleransi sehingga tidak terlalu berdampak pada mutu fisik dan citarasa yang dihasilkan dari beberapa varietas kopi. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dengan pola faktorial yang terdiri atas 2 faktor. Faktor pertama adalah varietas kopi yang digunakan (V) yaitu V1 = Tim-tim, V2 = Bourbon dan V3 = Ateng Super. Faktor kedua adalah lama penundaan proses pulping yang dilakukan (P) yaitu P0 = 0 hari, P1 = 1 hari, P2 = 2 hari, P3 = 3 hari, P4 = 4 hari dan P5 = 5 hari. Setiap perlakuan diulang sebanyak dua kali sehingga terdapat 36 satuan percobaan. Analisis yang dilakukan meliputi: persentase buah mengapung, suhu buah selama penundaan proses pulping, densitas kamba, kadar air, biji busuk, biji hitam dan biji berwarna coklat. Serta pengujian pH seduhan kopi.Kata kunci : Kopi Arabika Gayo, mutu fisik,citarasa,penundaan proses pulping

Tailoring Cocrystal and Salt Formation and Controlling the Crystal Habit of Diflunisal

Crystal habit modification of the drug diflunisal that normally grows into extremely thin, long needles has been achieved by breaking the stacking effect with the help of coformers. Eight new cocrystals are reported, along with three crystal structures. In all cases, ortho F disorder, often a feature in diflunisal structures was absent due to the presence of CH···F interactions. Co-milling diflunisal with oxalic acid produced 1:1 and 2:1 cocrystals. In contrast, in solution crystallization, oxalic acid played the role of an additive resulting in the crystallization of diflunisal form I rather than form III. To rationalize cocrystal formation, a statistical analysis of the Cambridge Crystallographic Data Centre database for aromatic o-hydroxy carboxylic acids was carried out. All cocrystals of o-hydroxy carboxylic acids with the COOH dimer motif have an electron-withdrawing group on one of the acids. COOH···Nar motifs are formed preferentially over carboxylic homodimers in the presence of an Nar coformer