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Case Report : Full term broad ligament pregnancy through a Cesarean scar
( Samar Rudra ),( Suhasini Gupta ),( Bal Krishan Taneja ),( Ranjana Gupta ) 대한산부인과학회 2013 Obstetrics & Gynecology Science Vol.56 No.6
A broad ligament pregnancy is an extremely rare condition. Diagnosis is often missed and finally made during laparotomy. We present a case which remained undiagnosed throughout her pregnancy till she reached term and unfortunately had intrauterine foetal demise when she reported to our hospital. On clinical suspicion, ultrasound and magnetic resonance imaging evaluation was done which picked up the diagnosis of abdominal pregnancy. On laparotomy a broad ligament pregnancy was found with a rent in the previous Cesarean scar towards the gestational sac in the broad ligament.
Dioxygen Activation and O-O Bond Formation Reactions by Manganese Corroles
Guo, Mian,Lee, Yong-Min,Gupta, Ranjana,Seo, Mi Sook,Ohta, Takehiro,Wang, Hua-Hua,Liu, Hai-Yang,Dhuri, Sunder N.,Sarangi, Ritimukta,Fukuzumi, Shunichi,Nam, Wonwoo American Chemical Society 2017 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.139 No.44
<P>Activation of dioxygen (O-2) in enzymatic and biomimetic reactions has been intensively investigated over the past several decades. More recently, O-O bond formation, which is the reverse of the O-2-activation reaction, has been the focus of current research. Herein, we report the O-2-activation and O-O bond formation reactions by manganese corrole complexes. In the O-2-activation reaction, Mn(V)-oxo and Mn(IV)-peroxo intermediates were formed when Mn(III) corroles were exposed to O-2 in the presence of base (e.g., OH-) and hydrogen atom (H atom) donor (e.g., THE or cyclic olefins); the O-2-activation reaction did not occur in the absence of base and H atom donor. Moreover, formation of the Mn(V)-oxo and Mn(IV)-peroxo species was dependent on the amounts of base present in the reaction solution. The role of the base was proposed to lower the oxidation potential of the Mn(III) corroles, thereby facilitating the binding of O-2 and forming a Mn(IV)-superoxo species. The putative Mn(IV)-superoxo species was then converted to the corresponding Mn(IV)-hydroperoxo species by abstracting a H atom from H atom donor, followed by the O-O bond cleavage of the putative Mn(IV)-hydroperoxo species to form a Mn(V)-oxo species. We have also shown that addition of hydroxide ion to the Mn(V)-oxo species afforded the Mn(IV)-peroxo species via O-O bond formation and the resulting Mn(IV)-peroxo species reverted to the Mn(V)-oxo species upon addition of proton, indicating that the O-O bond formation and cleavage reactions between the Mn(V)-oxo and Mn(IV)-peroxo complexes are reversible. The present study reports the first example of using the same manganese complex in both O-2-activation and O-O bond formation reactions.</P>
Supriya Deepak Patil,Rajnikant Sharma,Tapas Bhattacharyya,Piyush Kumar,Manasi Gupta,Bhupinder Singh Chaddha,Naveen Kumar Navani,Ranjana Pathania 한국미생물학회 2015 The journal of microbiology Vol.53 No.9
Infirmity and death from diseases caused by unsafe food are a continual hazard to communal health safety and socio-economic growth throughout the world. Chemical preservatives are associated with health hazards and toxicity issues. In the study reported here, 200 soil isolates from Western Himalayan region in India were screened for potential antibacterial activity against food-borne pathogens. This study led to the isolation of a bacterial strain belonging to the Genus Bacillus and was designated as RPT-0001. The associated antibacterial activity was sensitive to pronase E treatment. Bioassay-guided fractionation using reverse phase high performance liquid chromatography (RP-HPLC) led to isolation of the antibacterial peptide designated as RPT-0001. The molecular weight of RPT-0001 was determined by electro- spray ionization mass spectroscopy (ESI-MS) as 276.9 Da. RPT-0001 was inhibitory to both Gram-negative and Grampositive food-borne bacteria tested. The characteristics of RPT-0001 do not match with that of any other known antibacterial peptides produced by Bacillus sp. or related genera. Purified RPT-0001 was successfully used in synthesis of silver nanoparticles effective against food-borne pathogenic bacteria. The antibacterial peptide and silver nanoparticles synthesized utilizing it as a capping and reducing agent hold promising potential in food preservation, in packaging material and as a therapeutic agent in the treatment of foodborne infections.